Creating and Using Study Cases in DIgSILENT PowerFactory. Case P.M. Anderson ...Francisco Gonzalez-Longatt
This document describes how to create and use study cases in PowerFactory software. Study cases allow users to define simulations and store the settings, network components, and results. The tutorial explains how to create a new study case, activate it, add a power grid model, and remove components. Study cases enable easy reproduction of simulation results and testing of different network configurations and scenarios.
1st Symposium on Modelling and Simulation Challenges for Future Sustainable Energy Systems.
Tutorial: Modelling and Simulations: Renewable Resources and Storage
This report gives an overview of patenting activity around Doubly-fed Induction Generators (DFIG) used in the horizontal axis wind turbines for efficient power generation. Patents were categorized as per key DFIG technologies and analyzed for generating different trends within PatSeer Project.
Tutorial: Introduction to Transient Analysis with PowerFactory. This tutorial is a simple introduction to transient simulation using DIgSILENT PowerFactory
This document discusses various aspects of power system stability including definitions, types of stability, and the impacts of integrating renewable energy. It defines power system stability as the ability to maintain a state of operating equilibrium after disturbances. The main types of stability covered are rotor angle stability, frequency stability, and voltage stability. Rotor angle stability includes transient and small-signal stability. Frequency stability depends on factors like system inertia and spinning reserves. Voltage stability relates to maintaining steady voltages. The document notes challenges that renewable energy integration can present for stability and potential mitigation approaches.
The document discusses transient stability in power systems. It defines transient stability as synchronous generators and motors remaining in synchronism with one another during disturbances measured in milliseconds. Factors that can cause instability are discussed, such as faults, loss of excitation, or sudden load changes. Effects of instability include power swings, protective device misoperation, equipment damage, and blackouts. Solutions to stability problems presented are improving system design, selecting equipment to increase stability, and using power system stabilizers and protection schemes.
Example: Modal analysis using DIgSILENT PowerFactory. This example shows the application modal analysis with Power Factory to P.M. Anderson Test System
ETAP - Short circuit analysis iec standardHimmelstern
The document discusses short-circuit analysis based on the IEC standard. It describes the purpose of short-circuit studies including verifying protective device ratings and settings. The types of short-circuit faults covered include three-phase, phase-to-phase, and phase-to-ground faults. The IEC method for calculating short-circuit currents is explained including initial, peak, and steady-state currents. Considerations for near-generator and far-from-generator faults are also covered.
Creating and Using Study Cases in DIgSILENT PowerFactory. Case P.M. Anderson ...Francisco Gonzalez-Longatt
This document describes how to create and use study cases in PowerFactory software. Study cases allow users to define simulations and store the settings, network components, and results. The tutorial explains how to create a new study case, activate it, add a power grid model, and remove components. Study cases enable easy reproduction of simulation results and testing of different network configurations and scenarios.
1st Symposium on Modelling and Simulation Challenges for Future Sustainable Energy Systems.
Tutorial: Modelling and Simulations: Renewable Resources and Storage
This report gives an overview of patenting activity around Doubly-fed Induction Generators (DFIG) used in the horizontal axis wind turbines for efficient power generation. Patents were categorized as per key DFIG technologies and analyzed for generating different trends within PatSeer Project.
Tutorial: Introduction to Transient Analysis with PowerFactory. This tutorial is a simple introduction to transient simulation using DIgSILENT PowerFactory
This document discusses various aspects of power system stability including definitions, types of stability, and the impacts of integrating renewable energy. It defines power system stability as the ability to maintain a state of operating equilibrium after disturbances. The main types of stability covered are rotor angle stability, frequency stability, and voltage stability. Rotor angle stability includes transient and small-signal stability. Frequency stability depends on factors like system inertia and spinning reserves. Voltage stability relates to maintaining steady voltages. The document notes challenges that renewable energy integration can present for stability and potential mitigation approaches.
The document discusses transient stability in power systems. It defines transient stability as synchronous generators and motors remaining in synchronism with one another during disturbances measured in milliseconds. Factors that can cause instability are discussed, such as faults, loss of excitation, or sudden load changes. Effects of instability include power swings, protective device misoperation, equipment damage, and blackouts. Solutions to stability problems presented are improving system design, selecting equipment to increase stability, and using power system stabilizers and protection schemes.
Example: Modal analysis using DIgSILENT PowerFactory. This example shows the application modal analysis with Power Factory to P.M. Anderson Test System
ETAP - Short circuit analysis iec standardHimmelstern
The document discusses short-circuit analysis based on the IEC standard. It describes the purpose of short-circuit studies including verifying protective device ratings and settings. The types of short-circuit faults covered include three-phase, phase-to-phase, and phase-to-ground faults. The IEC method for calculating short-circuit currents is explained including initial, peak, and steady-state currents. Considerations for near-generator and far-from-generator faults are also covered.
The document describes exercises for analyzing an electrical grid model of Palau Island using DIgSILENT PowerFactory software. The exercises include: 1) importing the grid model into PowerFactory, 2) defining feeders to identify supply areas, 3) using feeders to scale loads and create voltage profiles, and 4) adding time-dependent load curves using characteristics to model varying demand. The goal is to familiarize users with key PowerFactory modeling and analysis functions using a real-world small island grid as a case study.
This document outlines a lecture on induction machines. It begins with an agenda and objectives. It then discusses the basic structure of induction machines, including the stator, rotor, and additional components. A key point is that the stator produces a rotating magnetic field when powered by a three-phase AC supply, which induces current in the rotor. Diagrams and animations are provided to illustrate this rotating magnetic field. The document also discusses topics like rotor windings and the relationship between electrical frequency and magnetic field rotational speed.
The document provides an overview of ETAP software for modeling AC power systems. It describes features for building a one-line diagram using auto-build and auto-connect functions. It also discusses modeling elements, running load flow analysis, creating multi-dimensional databases with study conditions and configurations, and using engineering libraries. The document uses examples to demonstrate creating a simple project, adding generators, composite networks, and circuit breakers. It also covers user access management and different types of circuit arrangements that can be modeled in ETAP.
This document discusses 3-phase transformer protection. It begins with an overview and introduction to 3-phase transformer construction and connections. It then discusses differential protection, restricted earth fault protection, overcurrent protection, and protection against overheating, fire, and lightning. Differential protection and restricted earth fault protection are described in more detail. Protection methods like Buchholz relays and pressure relief valves that protect against incipient faults are also explained. The document emphasizes that transformers are critical and expensive components that require proper protection methods to ensure uninterrupted and efficient operation.
As PSS®E continues to evolve, one of our primary concerns is to ensure backward compatibility so
that current studies can be transferred to the latest program release with minimum disruption. With
each new release of PSS®E, dynamic simulation users need to recompile their connection subroutines
if they are still needed, and user-written models, and relink them into the new uesr model
libraries.
While the vast majority of program Line Mode dialog remains unchanged, the introduction of new
program features can affect this dialog. Accordingly, it is recommended that the first use in a new
program release of any existing Response File or IPLAN program be monitored closely to ensure
that it performs as intended. The version activity can be used to direct the line mode interpreter
(LMI) to accept responses for earlier versions of the line mode dialog, back to version 29. Please
note that API commands will nearly always be backward comapatible, in batch command or Python
form.
The following sections discuss compatibility issues pertaining to the last several releases of
PSS®E. These sections include summaries of the program corrections that were implemented in
the corresponding major PSS®E release and any point releases. Starting with PSS®E-29, new
program features are summarized. Users upgrading from a release earlier than the one immediately
preceding the current release are strongly encouraged to review the notes below pertaining to all
intervening program releases.
This document discusses the importance of accounting for the DC component of fault current when dimensioning current transformers (CTs) and relay settings. It presents a case study of an earthing transformer at a substation where the existing CT and relay settings did not consider the DC offset. Calculating the transient dimensioning factor revealed the existing CT would be insufficient. The document recommends reducing the relay's saturation-free transmission time to better address the DC component with a more practical and economical CT design.
1) Synchronous generators have rotor windings that produce a rotating magnetic field and stator windings where 3-phase voltage is induced. They are driven by diesel engines, water turbines, or steam turbines.
2) The rotor magnetic poles can be either salient (sticking out) or cylindrical construction and are made of laminated steel to reduce eddy currents. Stator windings are used because connections are easier than on the rotating rotor.
3) Excitation systems use slip rings and brushes or brushless exciters to supply DC current to the rotor windings. This produced the rotating magnetic field needed to induce voltage in the stator windings.
The document summarizes different types of excitation systems used for synchronous generators. It describes the components and operation of static excitation systems, which are now widely used. Static excitation systems provide fast acting voltage control using thyristor bridges and power electronics. They allow high response ratios of 3-5 compared to older systems like DC excitation. The key components of a static excitation system are the rectifier transformer, SCR bridges, excitation start up equipment, field discharge equipment, and regulator/control circuits.
This document discusses power quality issues such as voltage sags, interruptions, spikes, swells, and harmonics. It explains the causes and consequences of each issue. Solutions discussed include improving the electric grid, using distributed energy resources like generators and energy storage, following standards, installing enhanced interface devices, and making equipment less sensitive. The key is preventing power quality problems through various measures to avoid losses.
Pakistan is facing electricity crisis due to demand and supply short fall as well as ever
increasing electricity prices in Pakistan. Moreover, the existing network of National
Transmission and Dispatch Company (NTDC) is already overloaded and needs expansion.
With the induction of new Power sources, new Transmission Lines (T/Ls) are required for
carrying the additional Power to the major electricity distribution centres of the Country.
In order to cope with these crises, Government of Pakistan (GOP) has looked out for various
Power Generation options other than Natural Gas and Furnace Oil. In this regard, GOP has
planned to generate additional power in the Karachi region and utilize the Coal reserves of
Thar, Sindh in Pakistan.
GOP has decided to implement two (02) key options i.e. to have Power generation from Thar
coal reserves and have Power Plants based on imported coal to be located in Karachi.
Taking a proactive approach, National Transmission & Dispatch Company (NTDC), has
accordingly proposed to construct the T/L on BOOT basis from Matiari to Upcountry (Lahore)
on priority basis. In order to have this Project implemented, number of tasks including T/L
route selection, environmental and resettlement studies and economic and financial analysis
of the Project is required. This Report deals with the Environmental Impact Assessment
(EIA) of the proposed T/L from Matiari to Lahore.
The proposed T/L is a + 660KV High Voltage Direct Current (HVDC) circuit starting from the
district Matiari near Hyderabad at a converter Station located in Matiari, Sindh and ending at
the Punjab province district Nankana Sahab near Lahore. Figure 1-1 shows the location map
of the proposed T/L. Total length of the T/L is about 865.55 km, of which 314.9 km falls in
Sindh province and remaining 550.65 km are located in Punjab province. Proposed T/L route
passes through twelve (12) districts, out of which five (05) districts are located in Sindh and
the remaining seven (07) are located in Punjab province.
Its a comparison of performance of MPPT controllers in case of solar PV array under same working conditions. The MPPT controllers used are Artificial Neural Network and P&O based.
The document presents a detailed electromechanical model of a DFIG-based wind turbine connected to a power grid. It discusses different types of wind turbine generators including squirrel cage induction, synchronous, and doubly fed induction generators. It then focuses on modeling and simulating a DFIG system in MATLAB/Simulink. Control schemes for regulating pitch angle, DC link voltage, and fault analysis are studied. Simulation results show the DFIG is able to control power at variable wind speeds and regulate DC link voltage through pitch angle control. Future work opportunities to improve the control and reduce system costs are also outlined.
Reactive power management and voltage control by using statcomHussain Ali
This document summarizes the use of STATCOM devices for reactive power management and voltage control in transmission lines. It defines reactive power and explains the need for reactive power compensation. It then defines FACTS devices and specifically STATCOMs, describing their basic structure and principle of operation for generating and absorbing reactive power. The document discusses how STATCOMs can provide benefits like reactive power control, voltage regulation, and increased transmission capacity. It provides an example of a 500 MVAR STATCOM installed between Qatar and Bahrain for reactive power compensation and concludes that STATCOMs allow tighter voltage control and improved reliability compared to traditional capacitor banks.
The document discusses the Power System Analysis Toolbox (PSAT), a MATLAB toolbox for electric power system analysis and control. It provides an overview of PSAT, including its history, features, component models, and utilities. PSAT allows for both static and dynamic power system analysis and includes tools such as power flow, continuation power flow, optimal power flow, small signal stability analysis, and time domain simulation. The document also provides instructions for installing, launching, setting up, loading data into, and running analyses with PSAT.
1. The document discusses power system stability, including classifications of power system states as steady state, dynamic state, and transient state.
2. It describes synchronous machine swing equation and power angle equation, which relate the mechanical power input to the electrical power output of a generator through the power/torque angle.
3. An example calculation is shown to find the steady state power limit of a power system with a generator connected to an infinite bus through a transmission line.
This document provides an overview of load flow analysis in ETAP software. It discusses load flow concepts such as determining steady state operating conditions, sizing equipment, and verifying operational limits. It also describes load flow requirements in ETAP like equipment data and models different load types commonly found in power systems. The document outlines how loads are modeled in ETAP, including constant power, constant impedance and lumped loads. It provides examples of calculating motor nameplate values from ratings and determining load values.
The document discusses a technical seminar on a buck converter fed by a PV array. It introduces PV systems and their applications. It describes the components of a PV system including PV modules, charge controllers, and buck converters. It explains that a buck converter connected between the PV array and battery uses maximum power point tracking to efficiently charge the battery by operating the PV array at its maximum power point. The document concludes that a buck converter increases the system efficiency when used with an MPPT technique in a PV system.
The document discusses WEG's CWB line of contactors for motor control and protection up to 18.5 kW/25 HP. It provides details on the features and benefits of the compact, modular contactors including low energy consumption coils, built-in auxiliary contacts, flexibility for panel assembly, safety compliance, and accessories. The contactors have been developed to work efficiently with IE3 premium efficiency motors while requiring no derating of components.
Modelación y Simulación de Sistemas de Potencia Empleando DIgSILENT PowerFact...Francisco Gonzalez-Longatt
Los participantes en este entrenamiento disfrutarán de una experiencia de aprendizaje única, en la cual se presenta una introducción exhaustiva e integral de las funciones básicas de software DIgSILENT PowerFactory.
El participante de este entrenamiento obtendrá una visión completa de las principales funcionalidades del programa de DIgSILENT PowerFactory.
This document provides an agenda for a seminar on modelling renewables resources and storage in PowerFactory V15.2. The agenda includes an overview of basic PowerFactory concepts, system analysis functions in PowerFactory, modelling of different types of wind turbines and technologies, photovoltaics and battery energy storage systems, and a fully rated wind turbine template. The seminar aims to teach participants how to model renewable energy resources and energy storage using DIgSILENT PowerFactory software.
The document describes exercises for analyzing an electrical grid model of Palau Island using DIgSILENT PowerFactory software. The exercises include: 1) importing the grid model into PowerFactory, 2) defining feeders to identify supply areas, 3) using feeders to scale loads and create voltage profiles, and 4) adding time-dependent load curves using characteristics to model varying demand. The goal is to familiarize users with key PowerFactory modeling and analysis functions using a real-world small island grid as a case study.
This document outlines a lecture on induction machines. It begins with an agenda and objectives. It then discusses the basic structure of induction machines, including the stator, rotor, and additional components. A key point is that the stator produces a rotating magnetic field when powered by a three-phase AC supply, which induces current in the rotor. Diagrams and animations are provided to illustrate this rotating magnetic field. The document also discusses topics like rotor windings and the relationship between electrical frequency and magnetic field rotational speed.
The document provides an overview of ETAP software for modeling AC power systems. It describes features for building a one-line diagram using auto-build and auto-connect functions. It also discusses modeling elements, running load flow analysis, creating multi-dimensional databases with study conditions and configurations, and using engineering libraries. The document uses examples to demonstrate creating a simple project, adding generators, composite networks, and circuit breakers. It also covers user access management and different types of circuit arrangements that can be modeled in ETAP.
This document discusses 3-phase transformer protection. It begins with an overview and introduction to 3-phase transformer construction and connections. It then discusses differential protection, restricted earth fault protection, overcurrent protection, and protection against overheating, fire, and lightning. Differential protection and restricted earth fault protection are described in more detail. Protection methods like Buchholz relays and pressure relief valves that protect against incipient faults are also explained. The document emphasizes that transformers are critical and expensive components that require proper protection methods to ensure uninterrupted and efficient operation.
As PSS®E continues to evolve, one of our primary concerns is to ensure backward compatibility so
that current studies can be transferred to the latest program release with minimum disruption. With
each new release of PSS®E, dynamic simulation users need to recompile their connection subroutines
if they are still needed, and user-written models, and relink them into the new uesr model
libraries.
While the vast majority of program Line Mode dialog remains unchanged, the introduction of new
program features can affect this dialog. Accordingly, it is recommended that the first use in a new
program release of any existing Response File or IPLAN program be monitored closely to ensure
that it performs as intended. The version activity can be used to direct the line mode interpreter
(LMI) to accept responses for earlier versions of the line mode dialog, back to version 29. Please
note that API commands will nearly always be backward comapatible, in batch command or Python
form.
The following sections discuss compatibility issues pertaining to the last several releases of
PSS®E. These sections include summaries of the program corrections that were implemented in
the corresponding major PSS®E release and any point releases. Starting with PSS®E-29, new
program features are summarized. Users upgrading from a release earlier than the one immediately
preceding the current release are strongly encouraged to review the notes below pertaining to all
intervening program releases.
This document discusses the importance of accounting for the DC component of fault current when dimensioning current transformers (CTs) and relay settings. It presents a case study of an earthing transformer at a substation where the existing CT and relay settings did not consider the DC offset. Calculating the transient dimensioning factor revealed the existing CT would be insufficient. The document recommends reducing the relay's saturation-free transmission time to better address the DC component with a more practical and economical CT design.
1) Synchronous generators have rotor windings that produce a rotating magnetic field and stator windings where 3-phase voltage is induced. They are driven by diesel engines, water turbines, or steam turbines.
2) The rotor magnetic poles can be either salient (sticking out) or cylindrical construction and are made of laminated steel to reduce eddy currents. Stator windings are used because connections are easier than on the rotating rotor.
3) Excitation systems use slip rings and brushes or brushless exciters to supply DC current to the rotor windings. This produced the rotating magnetic field needed to induce voltage in the stator windings.
The document summarizes different types of excitation systems used for synchronous generators. It describes the components and operation of static excitation systems, which are now widely used. Static excitation systems provide fast acting voltage control using thyristor bridges and power electronics. They allow high response ratios of 3-5 compared to older systems like DC excitation. The key components of a static excitation system are the rectifier transformer, SCR bridges, excitation start up equipment, field discharge equipment, and regulator/control circuits.
This document discusses power quality issues such as voltage sags, interruptions, spikes, swells, and harmonics. It explains the causes and consequences of each issue. Solutions discussed include improving the electric grid, using distributed energy resources like generators and energy storage, following standards, installing enhanced interface devices, and making equipment less sensitive. The key is preventing power quality problems through various measures to avoid losses.
Pakistan is facing electricity crisis due to demand and supply short fall as well as ever
increasing electricity prices in Pakistan. Moreover, the existing network of National
Transmission and Dispatch Company (NTDC) is already overloaded and needs expansion.
With the induction of new Power sources, new Transmission Lines (T/Ls) are required for
carrying the additional Power to the major electricity distribution centres of the Country.
In order to cope with these crises, Government of Pakistan (GOP) has looked out for various
Power Generation options other than Natural Gas and Furnace Oil. In this regard, GOP has
planned to generate additional power in the Karachi region and utilize the Coal reserves of
Thar, Sindh in Pakistan.
GOP has decided to implement two (02) key options i.e. to have Power generation from Thar
coal reserves and have Power Plants based on imported coal to be located in Karachi.
Taking a proactive approach, National Transmission & Dispatch Company (NTDC), has
accordingly proposed to construct the T/L on BOOT basis from Matiari to Upcountry (Lahore)
on priority basis. In order to have this Project implemented, number of tasks including T/L
route selection, environmental and resettlement studies and economic and financial analysis
of the Project is required. This Report deals with the Environmental Impact Assessment
(EIA) of the proposed T/L from Matiari to Lahore.
The proposed T/L is a + 660KV High Voltage Direct Current (HVDC) circuit starting from the
district Matiari near Hyderabad at a converter Station located in Matiari, Sindh and ending at
the Punjab province district Nankana Sahab near Lahore. Figure 1-1 shows the location map
of the proposed T/L. Total length of the T/L is about 865.55 km, of which 314.9 km falls in
Sindh province and remaining 550.65 km are located in Punjab province. Proposed T/L route
passes through twelve (12) districts, out of which five (05) districts are located in Sindh and
the remaining seven (07) are located in Punjab province.
Its a comparison of performance of MPPT controllers in case of solar PV array under same working conditions. The MPPT controllers used are Artificial Neural Network and P&O based.
The document presents a detailed electromechanical model of a DFIG-based wind turbine connected to a power grid. It discusses different types of wind turbine generators including squirrel cage induction, synchronous, and doubly fed induction generators. It then focuses on modeling and simulating a DFIG system in MATLAB/Simulink. Control schemes for regulating pitch angle, DC link voltage, and fault analysis are studied. Simulation results show the DFIG is able to control power at variable wind speeds and regulate DC link voltage through pitch angle control. Future work opportunities to improve the control and reduce system costs are also outlined.
Reactive power management and voltage control by using statcomHussain Ali
This document summarizes the use of STATCOM devices for reactive power management and voltage control in transmission lines. It defines reactive power and explains the need for reactive power compensation. It then defines FACTS devices and specifically STATCOMs, describing their basic structure and principle of operation for generating and absorbing reactive power. The document discusses how STATCOMs can provide benefits like reactive power control, voltage regulation, and increased transmission capacity. It provides an example of a 500 MVAR STATCOM installed between Qatar and Bahrain for reactive power compensation and concludes that STATCOMs allow tighter voltage control and improved reliability compared to traditional capacitor banks.
The document discusses the Power System Analysis Toolbox (PSAT), a MATLAB toolbox for electric power system analysis and control. It provides an overview of PSAT, including its history, features, component models, and utilities. PSAT allows for both static and dynamic power system analysis and includes tools such as power flow, continuation power flow, optimal power flow, small signal stability analysis, and time domain simulation. The document also provides instructions for installing, launching, setting up, loading data into, and running analyses with PSAT.
1. The document discusses power system stability, including classifications of power system states as steady state, dynamic state, and transient state.
2. It describes synchronous machine swing equation and power angle equation, which relate the mechanical power input to the electrical power output of a generator through the power/torque angle.
3. An example calculation is shown to find the steady state power limit of a power system with a generator connected to an infinite bus through a transmission line.
This document provides an overview of load flow analysis in ETAP software. It discusses load flow concepts such as determining steady state operating conditions, sizing equipment, and verifying operational limits. It also describes load flow requirements in ETAP like equipment data and models different load types commonly found in power systems. The document outlines how loads are modeled in ETAP, including constant power, constant impedance and lumped loads. It provides examples of calculating motor nameplate values from ratings and determining load values.
The document discusses a technical seminar on a buck converter fed by a PV array. It introduces PV systems and their applications. It describes the components of a PV system including PV modules, charge controllers, and buck converters. It explains that a buck converter connected between the PV array and battery uses maximum power point tracking to efficiently charge the battery by operating the PV array at its maximum power point. The document concludes that a buck converter increases the system efficiency when used with an MPPT technique in a PV system.
The document discusses WEG's CWB line of contactors for motor control and protection up to 18.5 kW/25 HP. It provides details on the features and benefits of the compact, modular contactors including low energy consumption coils, built-in auxiliary contacts, flexibility for panel assembly, safety compliance, and accessories. The contactors have been developed to work efficiently with IE3 premium efficiency motors while requiring no derating of components.
Modelación y Simulación de Sistemas de Potencia Empleando DIgSILENT PowerFact...Francisco Gonzalez-Longatt
Los participantes en este entrenamiento disfrutarán de una experiencia de aprendizaje única, en la cual se presenta una introducción exhaustiva e integral de las funciones básicas de software DIgSILENT PowerFactory.
El participante de este entrenamiento obtendrá una visión completa de las principales funcionalidades del programa de DIgSILENT PowerFactory.
This document provides an agenda for a seminar on modelling renewables resources and storage in PowerFactory V15.2. The agenda includes an overview of basic PowerFactory concepts, system analysis functions in PowerFactory, modelling of different types of wind turbines and technologies, photovoltaics and battery energy storage systems, and a fully rated wind turbine template. The seminar aims to teach participants how to model renewable energy resources and energy storage using DIgSILENT PowerFactory software.
Seminar: Modelling Renewables Resources
and Storage in PowerFactory V15.2
This is a very simple seminar designed to present a general overview of the modelling renewables (Wind and PV) and storage (Batteries) in PowerFactory. This is not a 2 day training, it is a simple 90 minutes presentations. I hope you enjoy it.
Tutorial: Data Management in PowerFactory. This tutorial describes how data management is used in PowerFactory: Version, Derived Projects, Operation Scenarios
WORKSHOP: Frequency Control Schemes and Frequency Response of Power Systems c...Francisco Gonzalez-Longatt
The frequency of a power system depends on real power balance: generation-demand. During the normal operation of a power system, the frequency is regulated within strict limits by adjusting the electrical supply to meet the demand. If the balance between generation and demand is not reached, the system frequency will change at a rate initially determinate by the total system inertia. The total system inertia comprises the combined inertia of most of spinning generation and load connected to the power system. The contribution of the system inertia of one load or generator depend if the system frequency causes change in its rotational speed and, then, its kinetic energy. Worldwide, electricity generation from renewable energy is increasing rapidly; it is especially true in terms of the increasing of the wind power penetration. This situation arise some issues regarding the system frequency control because wind turbines provide small or even none response to frequency changes. Power electronically controlled and/or power electronically connected generators such as DFIG and FPC wind turbines do not naturally provide inertia response. However inertia response can be emulated by adding a supplementary control signal proportional to the rate of change of frequency, this is named the Synthetic or Artificial Inertia. This approach imposes some challenges about control and protection systems. This workshop is designed to provide a general understanding of the frequency control schemes and frequency response of power systems with the integration of wind power penetration.
The document provides an overview of power system analysis and modeling. It discusses modeling of various power system components like generators, transformers, transmission lines, and induction motors using equivalent circuits. It also covers per unit calculations and formation of impedance and reactance diagrams from a single line diagram. The document further discusses power flow analysis using bus admittance matrix and different iterative methods. It covers balanced and unbalanced fault analysis using symmetrical components. It concludes with discussing power system stability including steady state, transient, and voltage stability.
Power System Analysis was a core subject for Electrical & Electronics Engineering, Based On Anna University Syllabus. The Whole Subject was there in this document.
Share with it ur friends & Follow me for more updates.!
[1] O documento apresenta o dimensionamento do sistema elétrico de uma plataforma de produção offshore, incluindo a análise de cargas, dimensionamento dos geradores e transformadores, e estudos de fluxo de potência e curto-circuito. [2] É descrita a filosofia de operação da plataforma e condições de operação do sistema elétrico. [3] Os resultados obtidos na simulação são analisados para especificar os principais equipamentos do sistema.
Study of using particle swarm for optimal power flowMohamed Abuella
The document describes a study using particle swarm optimization to solve the optimal power flow problem in power systems including wind power generators. The study models the intermittent nature of wind power using a Weibull probability distribution and transforms wind speed to power probabilities. The optimal power flow problem is formulated as a mathematical optimization problem minimizing generation costs subject to constraints. Particle swarm optimization is applied to solve the optimal power flow problem, with the algorithm updating particles based on personal and global best positions to iteratively search for the minimum cost solution satisfying all constraints.
The modern power system around the world has grown in complexity of interconnection and
power demand. The focus has shifted towards enhanced performance, increased customer focus,
low cost, reliable and clean power. In this changed perspective, scarcity of energy resources,
increasing power generation cost, environmental concern necessitates optimal economic dispatch.
In reality power stations neither are at equal distances from load nor have similar fuel cost
functions. Hence for providing cheaper power, load has to be distributed among various power
stations in a way which results in lowest cost for generation. Practical economic dispatch (ED)
problems have highly non-linear objective function with rigid equality and inequality constraints.
Particle swarm optimization (PSO) is applied to allot the active power among the generating
stations satisfying the system constraints and minimizing the cost of power generated. The
viability of the method is analyzed for its accuracy and rate of convergence. The economic load
dispatch problem is solved for three and six unit system using PSO and conventional method for
both cases of neglecting and including transmission losses. The results of PSO method were
compared with conventional method and were found to be superior. The conventional
optimization methods are unable to solve such problems due to local optimum solution
convergence. Particle Swarm Optimization (PSO) since its initiation in the last 15 years has been
a potential solution to the practical constrained economic load dispatch (ELD) problem. The
optimization technique is constantly evolving to provide better and faster results.
While writing the report on our project seminar, we were wondering that Science and smart
technology are as ever expanding field and the engineers working hard day and night and make
the life a gift for us
This document discusses a lecture on power flow analysis in a power systems engineering course. It provides announcements about homework assignments and an upcoming midterm exam. It also discusses examples of the Gauss two bus power flow method and the inclusion of PV generator buses in the Gauss-Seidel iteration method. Key concepts covered include slack buses, generator reactive power limits, and methods to accelerate Gauss-Seidel convergence.
The document discusses power flow analysis and solutions using the Gauss-Seidel method. It describes setting up the bus admittance matrix and node-voltage equations based on impedance values between nodes. The Gauss-Seidel method is then used to iteratively solve the nonlinear power flow equations to determine bus voltages and power flows by updating the solution for one variable at a time. Instructions are provided on applying the method to different bus types including slack, PQ and PV buses.
Planificación y Descripción General del Curso. Sistemas de Generacion Distrib...Francisco Gonzalez-Longatt
Este documento presenta la planificación general de un curso sobre sistemas de generación distribuida. El curso cubrirá los cambios en los paradigmas de generación eléctrica hacia sistemas más descentralizados, las tecnologías utilizadas en la generación distribuida como energías renovables y cogeneración, y los impactos técnicos y económicos de integrar la generación distribuida a las redes existentes. El programa detallado incluye temas sobre introducción a la generación distribuida, tecnologías empleadas, modelado, e impact
Future Energy Systems: Challenges on Modelling and Control Uncertainties + Bi...Francisco Gonzalez-Longatt
Future Energy Systems: Challenges on Modelling and Control Uncertainties + Big-Data. 3th April 2015
Kasetsart University Bangkok, Thailand. Prof. Francisco M. Gonzalez-Longatt
Capitulo 1. Conceptualización de la Generación Distribuida. Sistemas de Gener...Francisco Gonzalez-Longatt
Este documento presenta una introducción a la generación distribuida. Explica la historia de la producción de electricidad comercial, desde los primeros sistemas aislados hasta la tendencia hacia la generación, transmisión y distribución centralizadas. También describe la concepción tradicional de los sistemas de potencia, basada en grandes plantas de generación lejos de los centros de demanda, interconectadas por grandes redes de transmisión. Finalmente, introduce el cambio de paradigma hacia modelos más descentralizados con fuentes de generación distribuida.
Este documento describe las microturbinas, una tecnología empleada en la generación distribuida. Explica que las microturbinas son pequeños motores de ciclo Brayton que usan combustión para producir electricidad. Describe las características, clasificaciones, componentes y diseños de las microturbinas, incluyendo su compresor, turbina, generador y uso de gas natural como combustible.
Capitulo 2. Tecnologías empleadas en la Generación Distribuida - Sistemas de ...Francisco Gonzalez-Longatt
Este documento clasifica y describe las principales tecnologías empleadas en la generación distribuida. Se dividen en renovables como fotovoltaica, eólica e hidráulica, y no renovables como motores de combustión, turbinas de gas y microturbinas. También discute los principios de conversión de energía utilizados, como máquinas térmicas y celdas de combustible. Finalmente, introduce diferentes formas de modelar el comportamiento dinámico de estas tecnologías debido a su falta de inercia e interfaz con la red el
El documento describe diferentes tipos de celdas de combustible, incluyendo sus características, componentes y aplicaciones. Las celdas de combustible convierten la energía química directamente en energía eléctrica mediante reacciones electroquímicas. Algunos tipos descritos son las celdas de combustible alcalinas, de membrana de intercambio de protón, de óxido sólido y de ácido fosfórico, las cuales varían en su electrolito, temperatura de operación y aplicaciones.
The document discusses big data and data analytics in power systems. It defines big data as large amounts of data that cannot be processed with traditional means. Power systems are generating vast amounts of data from sensors and devices that monitor the grid. The proliferation of renewable energy is also introducing more variability and uncertainty into power systems. Advanced data analytics techniques are needed to extract useful insights from these large, complex datasets to help plan and operate future power systems more efficiently and securely.
Is disruptive innovation only for start-ups? French Industry in the Face of K...La Fabrique de l'industrie
Ever since the entire planet turned to messenger RNA vaccines, there's not a single business sector that doesn't fear being "disintermediated" sooner or later by digital giants, or disintegrated by triumphant start-ups: the challenge of technological disruption has thus taken on new acuity. It is indeed through disruptive innovation that an economy anticipates and fosters the major transitions that will shape tomorrow's society. It's also how companies distinguish themselves in a changing, highly competitive environment. The challenge is not only to invent, but above all to stay one step ahead in the face of foreign countries that do not hesitate to heavily support certain companies in order to dominate key sectors.
While start-ups have been held up as a reference model for years, are large French companies still capable of achieving the technological breakthroughs that markets expect of them? Based on first-hand accounts and an original analysis of patent data covering twelve technological fields, eight of which contribute to the ecological transition, this book provides an insight into the dynamics of innovation in France, its technological positioning and the type of companies involved.
The book is aimed at business leaders, public decision-makers, researchers, students and all readers interested in innovation issues in France.
The importance of an innovation management system_Maie PeetriMaie Peetri
This document summarizes a dissertation on innovation management systems. It provides an overview of relevant literature and frameworks for innovation management. It then describes a case study conducted with nine Portuguese IT companies, five of which had certification under the Portuguese NP4457:2007 standard for research, development and innovation management. The case study aimed to identify advantages of implementing a certified innovation management system and impacts of certification. Results indicated that certified companies had more systematic information management and documentation of their innovation processes. Certification also seemed to positively influence company strategies and outcomes related to innovation.
The document discusses the MIT-Portugal Program, a collaboration between MIT and research universities and companies in Portugal. The program aims to strengthen Portugal's capabilities in science, technology, and higher education by fostering strategic partnerships and investments in people, knowledge, and ideas. Key areas of focus for the program include sustainable energy and transportation systems, stem cell engineering, and new materials and product design. The program utilizes a systems thinking approach and aims to make Portugal a global leader in engineering systems and the application of systems thinking approaches to address complex problems. The five pathways of the program are to transform scientific and engineering training, build a research and knowledge network, invest in developing human resources, cultivate advanced research methods, and demonstrate the value of
CAPFITOGEN Programme for the Strengthening of Capabilities in National Plant Genetic Resources Programmes, International Treaty on Plant Genetic Resources for Food and Agriculture - FAO
The document discusses the changing nature of work from routine manufacturing to knowledge work. It notes that knowledge worker productivity is one of the biggest 21st century challenges and that intellectual capital now generates most market value. The spectrum of process support is reviewed, from highly structured to unstructured. Examples of adaptive case management systems are provided. Qualities of case management that differ from workflow, like supporting innovation and knowledge worker autonomy, are discussed. The conclusion is that adaptive case management is well-suited to support unpredictable knowledge work processes that require teams of experts to adapt and innovate to accomplish goals.
The document discusses electrical power systems and what can go wrong. It describes the typical structure of power systems including generation, transmission, distribution and loads. It discusses major interconnections in Europe, the UK and North America. Key components like energy control centers, SCADA systems and EMS tools are explained. Finally, it outlines several things that can disrupt power systems, such as lightning, wind, snow and other natural hazards as well as potential technical failures.
This document provides information about the sixth edition of the textbook "Product Design and Development" by Karl T. Ulrich and Steven D. Eppinger. It includes the copyright information, list of contributors to the book, and acknowledgments. The preface provides an overview of the authors' approach and goals for the textbook, which blends theory and practice through an emphasis on structured product development methods. It is intended to be used both in academic and industrial settings.
Product-Design-and-Development-Karl-T.-Ulrich-Steven-D.-Eppinger-EdisiSreesh P Somarajan
This document provides information about the sixth edition of the textbook "Product Design and Development" by Karl T. Ulrich and Steven D. Eppinger. It includes the copyright information, list of contributors to the book, and acknowledgments. The preface provides an overview of the authors' approach and goals for the textbook, which blends theory and practice through an emphasis on structured product development methods. It is intended to be used both in academic and industrial settings.
This document provides information about the sixth edition of the textbook "Product Design and Development" by Karl T. Ulrich and Steven D. Eppinger. It includes the copyright information, list of contributors to the book, and acknowledgments. The preface provides an overview of the authors' approach and goals for the textbook, which blends theory and practice through an emphasis on structured product development methods. It is intended to be used both in academic and industrial settings.
ENoLL President Tuija Hirvikoski presented the European Network of Living Lab's vision on global opportunities through Living Labs at Cantillon 2017 event that was hosted in Ireland. Content of the presentation:
- strategy of Living Labs, how Living Labs work, ENoLL memberhsip and the 11th wave
- OI2 (open innovation)
- OpenLivingLab Days 2017
- LLs as Local Open Innovation
Ecosystems
- Living Lab examples (Finland - Laurea UAS)
Pistoia Alliance Debates: Ontologies as the glue for knowledge management: Us...Pistoia Alliance
Ontological resources, such as curated vocabularies and hierarchical ontologies, are used as the glue which is vital for knowledge management on the semantically enabled worldwide web. This webinar will explore selected use cases and challenges for ontological engineering which is critical for a successful life science sector.
The document summarizes research being conducted through the MIT Portugal Program across three key areas:
1) Stem cell engineering for regenerative medicine, with projects developing novel therapies and their clinical implementation to treat illnesses through the convergence of life sciences, engineering, and physical sciences.
2) Sustainable energy and transportation systems, with a focus on developing solutions for urban mobility and leveraging fields like urban metabolism.
3) Materials and design-inspired products, integrating science and technology to create solutions for industries like mobility and health, including medical devices to improve daily life.
The document is Neobiotech's 2015 product catalog. It includes:
- An introduction to Neobiotech's corporate philosophy and history of developing simpler, safer, and faster implant products.
- Details on Neobiotech's research and development facilities and production process.
- An overview of Neobiotech's implant systems including the IS-II active, IT-II active, EB-II active, and S-mini implants.
- Descriptions of the surgical kits, guides, prosthetic components, and digital solutions that accompany the implant systems.
The document provides guidance on the research process from generating ideas to publishing in journals. It discusses key steps including idea generation, developing the idea through applying relevant theories and methodologies, collecting and analyzing data, writing and revising manuscripts, and activities after publication. The presentation aims to help researchers navigate the full research cycle based on the presenter's experience conducting management research.
This document provides information on speakers for the 2011 e-Teams Crash Course panel at ISCTE-IUL. It introduces 8 speakers: Luis Antero Reto, José Paulo Esperança, Gonçalo Amorim, José Estabil, Hugo Gamboa, Rui Lança, Shailendra Rai, and Virgínia Trigo. For each speaker it provides a short biography and their relevant experience in fields like entrepreneurship, engineering, business, academia, and more. The event is part of the ISCTE-IUL MIT Portugal Venture Competition.
The annual report summarizes the research activities of the Institute of Parallel and Distributed Systems (IPVS) at the University of Stuttgart from April 2009 to March 2010. Key events included celebrating the institute's 20th anniversary in June 2009 and two new faculty joining. Research focused on applications of parallel and distributed systems, image understanding, parallel systems, simulation of large systems, and distributed systems. Notable projects involved data management in manufacturing, business impact analysis, and simulation technology.
The total system inertia (H) is the primary source of electricity system robustness to frequency disturbances which arise due to an imbalance of generation and demand. The traditional large synchronous generators directly connected to the grid are the main sources of inertia, and they play an important role in limiting rate of change of frequency (ROCOF) and provide a natural response to the system frequency changes following an unscheduled loss of generation or demand from the power system.
The transition to a low carbon society is the driving force pushing the traditional power system to increase the volume of non-synchronous technologies which mainly use power converters (PCs) as an interface to the power network. The PCs decoupled the primary source from the power network, as a consequence are not able to contribute with “natural” inertia in the same way as classical synchronous generators. During a system frequency disturbance (SFD), the system frequency will change at a rate initially determined by the total system inertia (H). The inertial response of the system might be negatively affected with devastating consequences for system security and reliability.
The objective of this seminar is to present the fundamental aspects about system Frequency Control in Low Inertia Systems.
This seminar has special emphasis on non-synchronous technologies, mainly using power converters (PCs): (a) High Voltage DC (HVDC) and (b) Wind Power Integration and considers the implications on frequency control.
The total system inertia (H) is the primary source of electricity system robustness to frequency disturbances which arise due to an imbalance of generation and demand. The traditional large synchronous generators directly connected to the grid are the main sources of inertia, and they play an important role in limiting rate of change of frequency (ROCOF) and provide a natural response to the system frequency changes following an unscheduled loss of generation or demand from the power system.
The transition to a low carbon society is the driving force pushing the traditional power system to increase the volume of non-synchronous technologies which mainly use power converters (PCs) as an interface to the power network. The PCs decoupled the primary source from the power network, as a consequence are not able to contribute with “natural” inertia in the same way as classical synchronous generators. During a system frequency disturbance (SFD), the system frequency will change at a rate initially determined by the total system inertia (H). The inertial response of the system might be negatively affected with devastating consequences for system security and reliability.
The objective of this seminar is to present the fundamental aspects about system Frequency Control in Low Inertia Systems.
This seminar has special emphasis on non-synchronous technologies, mainly using power converters (PCs): (a) High Voltage DC (HVDC) and (b) Wind Power Integration and considers the implications on frequency control.
The total system inertia (H) is the primary source of electricity system robustness to frequency disturbances which arise due to an imbalance of generation and demand. The traditional large synchronous generators directly connected to the grid are the main sources of inertia, and they play an important role in limiting rate of change of frequency (ROCOF) and provide a natural response to the system frequency changes following an unscheduled loss of generation or demand from the power system.
The transition to a low carbon society is the driving force pushing the traditional power system to increase the volume of non-synchronous technologies which mainly use power converters (PCs) as an interface to the power network. The PCs decoupled the primary source from the power network, as a consequence are not able to contribute with “natural” inertia in the same way as classical synchronous generators. During a system frequency disturbance (SFD), the system frequency will change at a rate initially determined by the total system inertia (H). The inertial response of the system might be negatively affected with devastating consequences for system security and reliability.
The objective of this seminar is to present the fundamental aspects about system Frequency Control in Low Inertia Systems.
This seminar has special emphasis on non-synchronous technologies, mainly using power converters (PCs): (a) High Voltage DC (HVDC) and (b) Wind Power Integration and considers the implications on frequency control
The total system inertia (H) is the primary source of electricity system robustness to frequency disturbances which arise due to an imbalance of generation and demand. The traditional large synchronous generators directly connected to the grid are the main sources of inertia, and they play an important role in limiting rate of change of frequency (ROCOF) and provide a natural response to the system frequency changes following an unscheduled loss of generation or demand from the power system.
The transition to a low carbon society is the driving force pushing the traditional power system to increase the volume of non-synchronous technologies which mainly use power converters (PCs) as an interface to the power network. The PCs decoupled the primary source from the power network, as a consequence are not able to contribute with “natural” inertia in the same way as classical synchronous generators. During a system frequency disturbance (SFD), the system frequency will change at a rate initially determined by the total system inertia (H). The inertial response of the system might be negatively affected with devastating consequences for system security and reliability.
The objective of this seminar is to present the fundamental aspects about system Frequency Control in Low Inertia Systems.
This seminar has special emphasis on non-synchronous technologies, mainly using power converters (PCs): (a) High Voltage DC (HVDC) and (b) Wind Power Integration and considers the implications on frequency control.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise boosts blood flow and levels of neurotransmitters and endorphins which elevate and stabilize mood.
This document discusses the challenges facing future power networks. It begins with an overview of the drivers necessitating changes to power systems, including increasing renewable generation and the need to build new transmission and distribution infrastructure. It then examines specific changes happening in Great Britain's power system and outlines some of the major challenges facing the development of smarter grids, such as balancing variable generation and demand. Finally, it discusses sources of uncertainty and large volumes of data that must be managed in future power systems with high levels of distributed energy resources and monitoring points.
This document contains a presentation on frequency control and inertia response schemes for future power networks. It discusses the increasing complexity of modern power systems due to many interacting elements. It also provides examples of large international interconnects and the high levels of renewable generation penetration in some countries. Frequency stability concepts are introduced, including how system frequency is maintained by balancing generation and demand. The need for frequency response to correct deviations is also covered.
El documento describe diferentes aspectos de la energía eólica como fuente de generación distribuida. Explica que alrededor del 1-2% de la energía proveniente del sol es convertida en energía eólica, y que la energía eólica depende de factores como la velocidad y densidad del viento. Además, describe diferentes tipos de aerogeneradores como de eje horizontal, eje vertical, giromill y especiales, señalando sus características principales.
Este documento describe las diferentes tecnologías para generación de energía solar térmica, incluyendo colectores parabólicos, torres solares, y discos solares. Explica que los colectores parabólicos usan espejos curvos para enfocar la luz solar en un tubo, calentando un fluido que luego se usa para generar vapor e impulsar una turbina. Las torres solares usan espejos para enfocar la luz en un receptor en la cima de una torre, alcanzando altas temperaturas para generar vapor. Los
Este documento proporciona información sobre turbinas de combustión. Explica que las turbinas de combustión que queman gas natural son ampliamente utilizadas para la generación de electricidad. Describe el funcionamiento de las turbinas de combustión basadas en el ciclo Brayton y los componentes clave como el compresor, la cámara de combustión y la turbina. También cubre temas como ciclos combinados, controles y tipos de combustibles.
Este documento trata sobre las máquinas térmicas utilizadas en sistemas de generación distribuida, enfocándose en los motores de combustión interna como el motor diésel. Explica las clasificaciones de motores térmicos, los sistemas de refrigeración, lubricación y combustible. También discute la aplicación, eficiencia y emisiones de los motores diésel en comparación con los motores a gas natural.
Este documento provee una introducción a la historia de la electricidad y la generación distribuida. Resume los principales hitos en el desarrollo de los conocimientos eléctricos desde la antigüedad hasta la invención de la lámpara incandescente y el uso comercial de la electricidad. Explica brevemente el cambio del paradigma tradicional de sistemas de potencia centralizados a sistemas con generación distribuida.
This document outlines a seminar to be held at Coventry University on March 19-20th, 2013 regarding exploring future electricity networks beyond existing smart grid concepts. The seminar aims to brainstorm challenges and opportunities for multi-disciplinary research on smart grids looking beyond 2030. Participants from UK and Indian universities will discuss defining independent and joint research areas, potential funding resources, and initiating collaborations. Presentations will cover smart grid issues, opportunities for advanced applications, and national grid strategies. The goal is to establish an academic focus group and research collaborations between UK and India on developing electricity networks beyond smart grids.
Design and Analysis of PID and Fuzzy-PID Controller for Voltage Control of DC...Francisco Gonzalez-Longatt
DC microgrids are desired to provide the electricity for the remote areas which are far from the main grid. The microgrid creates the open horizontal environment to interconnect the distributed generation especially photovoltaic (PV). The stochastic nature of the PV output power introduces the large fluctuations of the power and voltage in the microgrid and forced to introduce the controller for voltage stability. There are many control strategies to control the voltage of a DC microgrid in the literature. In this paper the proportional-integral-derivative (PID) and fuzzy logic PID (FL-PID) controller has been designed and compared in term of performance. Performance measures like maximum overshoot and settling time of FL-PID compared with the PID proved that the former is better controller. The controllers are designed and simulated in the MATLAB programming environment. The controllers has been tested for the real time data obtained from Pecan Street Project, University of Texas at Austin USA.
Future Meshed HVDC Grids: Challenges and Opportunities, 29th October 2015, Po...Francisco Gonzalez-Longatt
This document provides a brief history of HVDC transmission systems from the late 19th century to modern applications. Some key points:
- Early systems in the late 1800s used DC transmission over long distances but were inefficient due to the need for rotating machinery.
- In the 1930s, mercury arc valves were used in experimental HVDC systems in the US and Germany.
- The first modern HVDC system using thyristor valves went into service in Sweden in 1950, transmitting 20MW over 98km.
- Major projects in the 1960s included the first cross-channel link between England and France and a 750MW, 450km overhead line in Russia.
Este documento presenta una introducción al curso de entrenamiento sobre el uso del software DIgSILENT PowerFactory para la modelación y simulación de sistemas de potencia. El curso se llevará a cabo del 23 al 25 de septiembre de 2015 en la Universidad de Sevilla, España. El documento explica brevemente los enfoques funcional y por proyecto para aprender a usar el software, y proporciona una vista general de la interfaz de usuario principal de DIgSILENT PowerFactory.
Effects of Grounding Configurations on Post-Contingency Performance of MTDC...Francisco Gonzalez-Longatt
-The grounding system is extremely important, as it affects the performance of the MTDC system virtually in any possible mode: normal (asymmetrical operation) and abnormal operation (faults), steady-state and dynamic. The objective of this paper is to introduce a simple approach to assess the steady-state post-contingency of multi-Terminal HVDC System and uses it order to illustrate the effects of grounding configurations on steady-state post-contingency performance. A 3-terminal HVDC system is used to formulate the main theoretical framework for performance prediction on post-contingency steady-state of MTDC system as well as for demonstrative purposes.
UNLOCKING HEALTHCARE 4.0: NAVIGATING CRITICAL SUCCESS FACTORS FOR EFFECTIVE I...amsjournal
The Fourth Industrial Revolution is transforming industries, including healthcare, by integrating digital,
physical, and biological technologies. This study examines the integration of 4.0 technologies into
healthcare, identifying success factors and challenges through interviews with 70 stakeholders from 33
countries. Healthcare is evolving significantly, with varied objectives across nations aiming to improve
population health. The study explores stakeholders' perceptions on critical success factors, identifying
challenges such as insufficiently trained personnel, organizational silos, and structural barriers to data
exchange. Facilitators for integration include cost reduction initiatives and interoperability policies.
Technologies like IoT, Big Data, AI, Machine Learning, and robotics enhance diagnostics, treatment
precision, and real-time monitoring, reducing errors and optimizing resource utilization. Automation
improves employee satisfaction and patient care, while Blockchain and telemedicine drive cost reductions.
Successful integration requires skilled professionals and supportive policies, promising efficient resource
use, lower error rates, and accelerated processes, leading to optimized global healthcare outcomes.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Batteries -Introduction – Types of Batteries – discharging and charging of battery - characteristics of battery –battery rating- various tests on battery- – Primary battery: silver button cell- Secondary battery :Ni-Cd battery-modern battery: lithium ion battery-maintenance of batteries-choices of batteries for electric vehicle applications.
Fuel Cells: Introduction- importance and classification of fuel cells - description, principle, components, applications of fuel cells: H2-O2 fuel cell, alkaline fuel cell, molten carbonate fuel cell and direct methanol fuel cells.
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECTjpsjournal1
The rivalry between prominent international actors for dominance over Central Asia's hydrocarbon
reserves and the ancient silk trade route, along with China's diplomatic endeavours in the area, has been
referred to as the "New Great Game." This research centres on the power struggle, considering
geopolitical, geostrategic, and geoeconomic variables. Topics including trade, political hegemony, oil
politics, and conventional and nontraditional security are all explored and explained by the researcher.
Using Mackinder's Heartland, Spykman Rimland, and Hegemonic Stability theories, examines China's role
in Central Asia. This study adheres to the empirical epistemological method and has taken care of
objectivity. This study analyze primary and secondary research documents critically to elaborate role of
china’s geo economic outreach in central Asian countries and its future prospect. China is thriving in trade,
pipeline politics, and winning states, according to this study, thanks to important instruments like the
Shanghai Cooperation Organisation and the Belt and Road Economic Initiative. According to this study,
China is seeing significant success in commerce, pipeline politics, and gaining influence on other
governments. This success may be attributed to the effective utilisation of key tools such as the Shanghai
Cooperation Organisation and the Belt and Road Economic Initiative.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.