Voltage and Power Stability of HVDC-2018
•Download as PPTX, PDF•
6 likes•804 views
This document discusses voltage and power stability of HVDC systems. It provides an introduction to HVDC technology and describes its history. The document outlines different types of HVDC systems and discusses their stability, including steady state stability, transient stability, and voltage stability. It also covers how HVDC systems work, worldwide installed capacity, advantages and disadvantages of stability, and provides a conclusion on stability analysis methodologies for HVDC systems.
Report
Share
Report
Share
Recommended
voltage and power stability of hvdc system
This document summarizes different types of HVDC systems and their stability characteristics. It discusses single-infeed, multi-infeed, and chain-type HVDC systems. It also describes different types of stability including steady-state, transient, and dynamic stability. Key concepts around voltage stability and power stability of HVDC systems are explained, such as voltage sensitivity factor and maximum available power. Methods for analyzing the stability of different HVDC configurations are presented.
HVDC TRANSMISSION
Basics of HVDC, its components, working & classification of HVDC system, comparison of HVDC & HVAC, advantages and disadvantages of HVDC all are discussed here.
HVDC Transmission system is a combination of AC and DC systems, first, the generated AC voltage is converted into DC at the transmission end, and when it reaches the receiving end DC is inverted to AC for distribution purposes. So, in order to carry out this operation, we need conversion devices for both ends of the transmission line.
HVDC Transmission system helps in reducing power losses and improves the efficiency of the transmission system. Besides, the HVDC system is more economical as compared to HVAC but only for long distances (more than 600km).
HVDC (High Voltage Direct Current) Transmission system is more economical for the transmission of power over long distances as compared to AC transmission.
Learn more about HVDC at https://www.allumiax.com/blog/high-voltage-direct-current-hvdc-transmission
Hvdc dad
Introduction, equipment required for HVDC systems, Comparison of AC and DC Transmission, Limitations of HVDC transmission lines, reliability of HVDC systems, comparison of HVDC link with EHVAC link, HVDC system configuration and components, fundamental equations in HVDC system, HVDC links, converter theory and performance equation, valve characteristic, converter circuits, converter transformer testing, multi bridge converters, abnormal operation of HVDC system, control of HVDC system, harmonics and filters. Influence of AC system strength on AC/DC system interaction, response to AC and DC system faults, Concept of reactive power compensation- reactive Power balance in HVDC substations-Effect of angle of advance and extinction angle on reactive power requirement of converters.
Power electronics application: FACTS controller
These slides present the introduction to FACTS devices. Later we will discuss about its modelling and control aspect applications. This comes under the topic on power electronics application in smart and microgrid systems.
Wide area protection & Control technologies
This document discusses wide area protection and control technologies using synchronized measurement systems. It provides an overview of synchronized measurement units, phasor data concentrators, and time stamping methods. It describes the benefits of synchronized measurements for system integrity protection schemes, oscillatory stability monitoring, voltage stability monitoring, and other applications. It also surveys existing installations of phasor measurement unit-based wide area protection schemes and discusses challenges in design, testing, and maintenance of wide area protection and control systems.
FREQUENCY STABILITY
This document discusses frequency stability in power systems. It begins with an overview of frequency stability problems, examples of frequency instability incidents, and analytical techniques used to investigate stability. It then presents two case studies - one analyzing an overgenerated island and the impact of turbine overspeed controls, and another analyzing an undergenerated island and the performance of underfrequency load shedding. Key topics covered include generator and plant controls, protections, governor models, and long-term stability simulation programs.
HVDC Transmission System Today's Upgrading Technology
High Voltage Direct Current Transmission line is highly use in today's generation for long power transmission system because it has many great advantages over HVAC Transmission system. It's requires low transmission line space and more space we can use around transmission line over HVAC transmission line.
Recommended
voltage and power stability of hvdc system
This document summarizes different types of HVDC systems and their stability characteristics. It discusses single-infeed, multi-infeed, and chain-type HVDC systems. It also describes different types of stability including steady-state, transient, and dynamic stability. Key concepts around voltage stability and power stability of HVDC systems are explained, such as voltage sensitivity factor and maximum available power. Methods for analyzing the stability of different HVDC configurations are presented.
HVDC TRANSMISSION
Basics of HVDC, its components, working & classification of HVDC system, comparison of HVDC & HVAC, advantages and disadvantages of HVDC all are discussed here.
HVDC Transmission system is a combination of AC and DC systems, first, the generated AC voltage is converted into DC at the transmission end, and when it reaches the receiving end DC is inverted to AC for distribution purposes. So, in order to carry out this operation, we need conversion devices for both ends of the transmission line.
HVDC Transmission system helps in reducing power losses and improves the efficiency of the transmission system. Besides, the HVDC system is more economical as compared to HVAC but only for long distances (more than 600km).
HVDC (High Voltage Direct Current) Transmission system is more economical for the transmission of power over long distances as compared to AC transmission.
Learn more about HVDC at https://www.allumiax.com/blog/high-voltage-direct-current-hvdc-transmission
Hvdc dad
Introduction, equipment required for HVDC systems, Comparison of AC and DC Transmission, Limitations of HVDC transmission lines, reliability of HVDC systems, comparison of HVDC link with EHVAC link, HVDC system configuration and components, fundamental equations in HVDC system, HVDC links, converter theory and performance equation, valve characteristic, converter circuits, converter transformer testing, multi bridge converters, abnormal operation of HVDC system, control of HVDC system, harmonics and filters. Influence of AC system strength on AC/DC system interaction, response to AC and DC system faults, Concept of reactive power compensation- reactive Power balance in HVDC substations-Effect of angle of advance and extinction angle on reactive power requirement of converters.
Power electronics application: FACTS controller
These slides present the introduction to FACTS devices. Later we will discuss about its modelling and control aspect applications. This comes under the topic on power electronics application in smart and microgrid systems.
Wide area protection & Control technologies
This document discusses wide area protection and control technologies using synchronized measurement systems. It provides an overview of synchronized measurement units, phasor data concentrators, and time stamping methods. It describes the benefits of synchronized measurements for system integrity protection schemes, oscillatory stability monitoring, voltage stability monitoring, and other applications. It also surveys existing installations of phasor measurement unit-based wide area protection schemes and discusses challenges in design, testing, and maintenance of wide area protection and control systems.
FREQUENCY STABILITY
This document discusses frequency stability in power systems. It begins with an overview of frequency stability problems, examples of frequency instability incidents, and analytical techniques used to investigate stability. It then presents two case studies - one analyzing an overgenerated island and the impact of turbine overspeed controls, and another analyzing an undergenerated island and the performance of underfrequency load shedding. Key topics covered include generator and plant controls, protections, governor models, and long-term stability simulation programs.
HVDC Transmission System Today's Upgrading Technology
High Voltage Direct Current Transmission line is highly use in today's generation for long power transmission system because it has many great advantages over HVAC Transmission system. It's requires low transmission line space and more space we can use around transmission line over HVAC transmission line.
Ehv line design
This document provides details on the design of a 500kV extra high voltage transmission line that is 600 miles long. It discusses selecting an economic conductor size, calculating line parameters such as resistance, inductance and capacitance, and ensuring safety clearances are met. The selected conductor is a bundle of 3 ACSR conductors with a cross-sectional area of 468 mm2 each. Line losses are calculated to be 51.23 MW, which is 5.123% of the 1000MW transmission capacity. Surge impedance is determined to be 276.6 ohms. Safety clearances are in accordance with National Electrical Safety Code specifications.
Hvdc system.pptx
This document provides an overview of high voltage direct current (HVDC) transmission systems. It discusses the motivations and components of HVDC systems, including converter stations and DC transmission lines. Some key advantages of HVDC are its ability to transmit large amounts of power over long distances with lower losses than alternating current systems. HVDC also allows asynchronous connections between AC systems and control over power flow direction.
HVDC TRANSMISSION LINE PPT
HVDC LIGHT TRANSMISSION
The document discusses HVDC (high voltage direct current) light transmission. Key points:
1. HVDC uses direct current for efficient long distance power transmission, including underwater.
2. Modern HVDC uses IGBT semiconductor technology in converters to transform AC to DC and vice versa.
3. HVDC has advantages over HVAC like transmitting power over long distances with lower losses, and allowing connection of asynchronous grids. It is most economical for distances over 600km.
Theory of HVDC transmission
1) HVDC transmission was first developed in the late 19th century by Rene Thury. Early systems used DC series generators and mechanical converters.
2) HVDC became more viable with the development of mercury arc valves in the 1950s and thyristor valves in the 1960s, allowing more efficient conversion between AC and DC.
3) HVDC is preferable to HVAC for long distance bulk power transmission, asynchronous connections, offshore wind connections, and other applications where HVDC has technical advantages over HVAC. Key components of HVDC systems include converters, smoothing reactors, filters, and the DC transmission line.
Substation
The major components of a typical substation include air circuit breakers, buses, capacitors, circuit switchers, conduits, control houses, converter stations, current transformers, disconnect switches, distribution buses, duct runs, frequency changers, grounding equipment, high-voltage cables, fuses, lightning arresters, manholes, metal-clad switchgear, meters, microwave systems, oil circuit breakers, potheads, and voltage transformers. Capacitor voltage transformers are used to transform high voltages to low voltages suitable for meters, relays and other equipment and provide insulation between high voltage and low voltage circuits.
Hvdc
This document discusses high voltage direct current (HVDC) transmission and compares it to high voltage alternating current (HVAC) transmission. It notes that HVDC is more efficient for long distance power transmission as losses are lower. The history and evolution of HVDC are presented, including early projects in Europe and growth globally. India's adoption and expansion of HVDC are covered. Technical advantages of HVDC include better voltage regulation and controllability while economic advantages include lower costs for lines and cables. Disadvantages include costly converter stations and inability to transmit reactive power. The document concludes that HVDC is more reliable than HVAC for long distance bulk power transmission including between unsynchronized grids.
TCSC
This document provides an overview of the thyristor controlled series capacitor (TCSC). It begins with the basic TCSC scheme and equations showing how the variable inductive reactance XL can change the capacitive reactance XC. It then discusses the impedance characteristics of the TCSC and how the capacitor voltage is reversed by the thyristor controlled reactor (TCR). Next, it examines the TCSC operating in the capacitive and inductive regions and how it can provide phase advance or retard. The document also covers the attainable voltage-current characteristics and harmonic voltage generation in the TCSC. It describes the functional internal control schemes and concludes with notes on design considerations.
Power System Control And Line Compensation
##CONTENT##
Introduction
Voltage control
Power system control
Control of reactive power and power factor
Interconnected control and frequency ties
Supervisory control
Line compensation
Series compensation
Series and shunt compensation schemes for ac transmission system
Methods of voltage control
This document discusses various methods of voltage control in power systems, including static shunt capacitors, static series capacitors, static shunt reactors, synchronous condensers, tap changing transformers, booster transformers, and SVC-Static VAR Compensators. Static shunt capacitors and static series capacitors inject reactive power to increase voltage, while static shunt reactors absorb reactive power to reduce voltage. Synchronous condensers can operate as either capacitors or reactors depending on their excitation to regulate voltage. Tap changing transformers and booster transformers also control voltage through adjusting transformer ratios.
Principles of Power Systems V.K Mehta Complete Book - Chapter 7
The document discusses electric power supply systems and transmission. It describes how electric power is generated at power stations, transmitted over long distances via transmission lines, and then distributed to consumers. There are three main components of an electric supply system: the power station, transmission lines, and the distribution network. Transmission is typically done using high voltages for efficiency and reduced line losses. While DC transmission has advantages, AC transmission is now universally used due to the ability to easily transform voltages using cost-effective transformers.
High Voltage Direct Current(Hvdc) transmission
this presentation is prepared my friend about high voltage direct current that is very important in electrical engineering.
Ac voltage
This document discusses different methods for measuring high AC voltages:
1. Electrostatic voltmeters use the attractive force between charged parallel plates, which is proportional to the square of the voltage, to directly measure voltages up to 200 kV.
2. Series impedance voltmeters connect a pure resistance or reactance in series with the voltage source, but resistances cause power losses and temperature issues while reactances are affected by harmonics.
3. Potential dividers can use resistances or capacitances to reduce the voltage to measurable levels, but resistances have the same issues as series impedance meters and capacitances are affected by harmonics in non-sinusoidal waves.
High voltage transmission
The presentation is delivering the general aspects of transmission of electric energy. At the beginning need of transmission is presented, and then the various aspects of transmission, which affect the choice of scheme of transmission are presented. At the end of presentation, the topic is summarized as comparison among the HVAC and HVDC transmission.
This presentation was given by shivlal mohal, during the final semester of electric engineering.
Hvdc
HVDC transmission was first used commercially in 1954 between Sweden and an island. It allows for bulk power transmission over long distances and undersea cables. HVDC systems use converters to change AC to DC and back. Components include smoothing reactors, filters, and electrodes. Configurations include monopolar, bipolar, and back-to-back links. Control is done by firing angle adjustment and tap changing. Advantages are long distance transmission and connecting unsynchronized grids, while disadvantages are costly converters and circuit breakers.
Saturated Reactor(SR) & Thyristor Controlled Reactor(TCR)
This ppt explained the basic concepts , VI characteristics , Advantages and disadvantages of Saturated Reactor & Thyristor Controlled Reactor.
Enhancement of power quality in distribution system using d statcom
1) The document discusses a project to enhance power quality in a distribution system using a D-STATCOM. It describes common power quality problems like voltage sags, harmonic distortion, and low power factor.
2) It provides details on the components and operation of a D-STATCOM, which contains a voltage source converter, controller, energy storage circuit, and LCL passive filter.
3) The methodology section describes simulating different fault scenarios in a test system both with and without a D-STATCOM and with or without the LCL filter. The results demonstrate that a D-STATCOM can mitigate voltage sags and an LCL filter reduces harmonic distortion.
Flexible AC Transmission (FACTS)
There are two broad classes of power system stability:
1) Steady state stability - The ability of a system to maintain equilibrium after a small disturbance.
2) Transient stability - The ability to maintain synchronism during large disturbances like faults.
Factors influencing transient stability include generator loading, fault conditions, clearing time, reactances, and inertia. Methods to improve it include high-speed excitation, series capacitors, fault clearing and independent pole operation.
Hvdc transmission system
This document discusses high voltage direct current (HVDC) electric power transmission. It provides an introduction to HVDC, outlines its history including the first HVDC transmission systems in Sweden and India. It describes the components used in HVDC including converter stations, rectifiers, filters and inverters. It discusses reasons for using HVDC over HVAC such as lower transmission losses and costs. Limitations of HVDC include costly terminal equipment and complex control systems. Applications include long distance and asynchronous transmission. The future may include fully converting generation to distribution systems to direct current.
Islands in power systems
Types of islands in power systems with DR
Issues with unintentional islands
Methods of protecting against unintentional islands
Standard testing for unintentional islanding
Advanced testing of inverters for anti-islanding functionality
Probability of unintentional islanding
The future of anti-islanding protection
Flexible Ac Transmission Systems 2Mark Materials and Question Bank
The document provides information about Flexible AC Transmission Systems (FACTS) including:
1) FACTS devices use power electronics to control parameters like voltage, impedance, and phase angle to improve power flow in transmission systems.
2) The main objectives of FACTS are to increase power transfer capability and control designated power flow routes.
3) The first STATCOM was implemented in 1955 by TVA to strengthen transmission ties, while the first UPFC was implemented in 1998 by AEP to provide full control of voltage, impedance, and phase angle.
major project seminar.pptx
The document describes a major project on a VSC-based HVDC transmission system for connecting offshore wind power plants. It discusses how offshore wind farms have higher potential for power generation due to faster, more constant winds. However, long distance transmission requires HVDC technology like VSC HVDC due to its flexibility and controllability. The project aims to model and analyze the behavior of a VSC-HVDC system connected to offshore winds farms and verify it through a laboratory setup. It covers topics like converter topologies, control strategies, interfacing wind turbines, and regulating power flow.
Hvdc transmission by pankaj chaudhary
This document is a seminar paper on HVDC (high voltage direct current) transmission presented by Pankaj Chaudhary. HVDC transmission has advantages over HVAC like lower transmission losses over long distances. The first HVDC link was between Gotland and mainland Sweden in 1954. HVDC uses direct current for transmission and converters are used to convert AC to DC. It allows asynchronous connections of AC networks and bulk power transmission over long distances or underwater.
More Related Content
What's hot
Ehv line design
This document provides details on the design of a 500kV extra high voltage transmission line that is 600 miles long. It discusses selecting an economic conductor size, calculating line parameters such as resistance, inductance and capacitance, and ensuring safety clearances are met. The selected conductor is a bundle of 3 ACSR conductors with a cross-sectional area of 468 mm2 each. Line losses are calculated to be 51.23 MW, which is 5.123% of the 1000MW transmission capacity. Surge impedance is determined to be 276.6 ohms. Safety clearances are in accordance with National Electrical Safety Code specifications.
Hvdc system.pptx
This document provides an overview of high voltage direct current (HVDC) transmission systems. It discusses the motivations and components of HVDC systems, including converter stations and DC transmission lines. Some key advantages of HVDC are its ability to transmit large amounts of power over long distances with lower losses than alternating current systems. HVDC also allows asynchronous connections between AC systems and control over power flow direction.
HVDC TRANSMISSION LINE PPT
HVDC LIGHT TRANSMISSION
The document discusses HVDC (high voltage direct current) light transmission. Key points:
1. HVDC uses direct current for efficient long distance power transmission, including underwater.
2. Modern HVDC uses IGBT semiconductor technology in converters to transform AC to DC and vice versa.
3. HVDC has advantages over HVAC like transmitting power over long distances with lower losses, and allowing connection of asynchronous grids. It is most economical for distances over 600km.
Theory of HVDC transmission
1) HVDC transmission was first developed in the late 19th century by Rene Thury. Early systems used DC series generators and mechanical converters.
2) HVDC became more viable with the development of mercury arc valves in the 1950s and thyristor valves in the 1960s, allowing more efficient conversion between AC and DC.
3) HVDC is preferable to HVAC for long distance bulk power transmission, asynchronous connections, offshore wind connections, and other applications where HVDC has technical advantages over HVAC. Key components of HVDC systems include converters, smoothing reactors, filters, and the DC transmission line.
Substation
The major components of a typical substation include air circuit breakers, buses, capacitors, circuit switchers, conduits, control houses, converter stations, current transformers, disconnect switches, distribution buses, duct runs, frequency changers, grounding equipment, high-voltage cables, fuses, lightning arresters, manholes, metal-clad switchgear, meters, microwave systems, oil circuit breakers, potheads, and voltage transformers. Capacitor voltage transformers are used to transform high voltages to low voltages suitable for meters, relays and other equipment and provide insulation between high voltage and low voltage circuits.
Hvdc
This document discusses high voltage direct current (HVDC) transmission and compares it to high voltage alternating current (HVAC) transmission. It notes that HVDC is more efficient for long distance power transmission as losses are lower. The history and evolution of HVDC are presented, including early projects in Europe and growth globally. India's adoption and expansion of HVDC are covered. Technical advantages of HVDC include better voltage regulation and controllability while economic advantages include lower costs for lines and cables. Disadvantages include costly converter stations and inability to transmit reactive power. The document concludes that HVDC is more reliable than HVAC for long distance bulk power transmission including between unsynchronized grids.
TCSC
This document provides an overview of the thyristor controlled series capacitor (TCSC). It begins with the basic TCSC scheme and equations showing how the variable inductive reactance XL can change the capacitive reactance XC. It then discusses the impedance characteristics of the TCSC and how the capacitor voltage is reversed by the thyristor controlled reactor (TCR). Next, it examines the TCSC operating in the capacitive and inductive regions and how it can provide phase advance or retard. The document also covers the attainable voltage-current characteristics and harmonic voltage generation in the TCSC. It describes the functional internal control schemes and concludes with notes on design considerations.
Power System Control And Line Compensation
##CONTENT##
Introduction
Voltage control
Power system control
Control of reactive power and power factor
Interconnected control and frequency ties
Supervisory control
Line compensation
Series compensation
Series and shunt compensation schemes for ac transmission system
Methods of voltage control
This document discusses various methods of voltage control in power systems, including static shunt capacitors, static series capacitors, static shunt reactors, synchronous condensers, tap changing transformers, booster transformers, and SVC-Static VAR Compensators. Static shunt capacitors and static series capacitors inject reactive power to increase voltage, while static shunt reactors absorb reactive power to reduce voltage. Synchronous condensers can operate as either capacitors or reactors depending on their excitation to regulate voltage. Tap changing transformers and booster transformers also control voltage through adjusting transformer ratios.
Principles of Power Systems V.K Mehta Complete Book - Chapter 7
The document discusses electric power supply systems and transmission. It describes how electric power is generated at power stations, transmitted over long distances via transmission lines, and then distributed to consumers. There are three main components of an electric supply system: the power station, transmission lines, and the distribution network. Transmission is typically done using high voltages for efficiency and reduced line losses. While DC transmission has advantages, AC transmission is now universally used due to the ability to easily transform voltages using cost-effective transformers.
High Voltage Direct Current(Hvdc) transmission
this presentation is prepared my friend about high voltage direct current that is very important in electrical engineering.
Ac voltage
This document discusses different methods for measuring high AC voltages:
1. Electrostatic voltmeters use the attractive force between charged parallel plates, which is proportional to the square of the voltage, to directly measure voltages up to 200 kV.
2. Series impedance voltmeters connect a pure resistance or reactance in series with the voltage source, but resistances cause power losses and temperature issues while reactances are affected by harmonics.
3. Potential dividers can use resistances or capacitances to reduce the voltage to measurable levels, but resistances have the same issues as series impedance meters and capacitances are affected by harmonics in non-sinusoidal waves.
High voltage transmission
The presentation is delivering the general aspects of transmission of electric energy. At the beginning need of transmission is presented, and then the various aspects of transmission, which affect the choice of scheme of transmission are presented. At the end of presentation, the topic is summarized as comparison among the HVAC and HVDC transmission.
This presentation was given by shivlal mohal, during the final semester of electric engineering.
Hvdc
HVDC transmission was first used commercially in 1954 between Sweden and an island. It allows for bulk power transmission over long distances and undersea cables. HVDC systems use converters to change AC to DC and back. Components include smoothing reactors, filters, and electrodes. Configurations include monopolar, bipolar, and back-to-back links. Control is done by firing angle adjustment and tap changing. Advantages are long distance transmission and connecting unsynchronized grids, while disadvantages are costly converters and circuit breakers.
Saturated Reactor(SR) & Thyristor Controlled Reactor(TCR)
This ppt explained the basic concepts , VI characteristics , Advantages and disadvantages of Saturated Reactor & Thyristor Controlled Reactor.
Enhancement of power quality in distribution system using d statcom
1) The document discusses a project to enhance power quality in a distribution system using a D-STATCOM. It describes common power quality problems like voltage sags, harmonic distortion, and low power factor.
2) It provides details on the components and operation of a D-STATCOM, which contains a voltage source converter, controller, energy storage circuit, and LCL passive filter.
3) The methodology section describes simulating different fault scenarios in a test system both with and without a D-STATCOM and with or without the LCL filter. The results demonstrate that a D-STATCOM can mitigate voltage sags and an LCL filter reduces harmonic distortion.
Flexible AC Transmission (FACTS)
There are two broad classes of power system stability:
1) Steady state stability - The ability of a system to maintain equilibrium after a small disturbance.
2) Transient stability - The ability to maintain synchronism during large disturbances like faults.
Factors influencing transient stability include generator loading, fault conditions, clearing time, reactances, and inertia. Methods to improve it include high-speed excitation, series capacitors, fault clearing and independent pole operation.
Hvdc transmission system
This document discusses high voltage direct current (HVDC) electric power transmission. It provides an introduction to HVDC, outlines its history including the first HVDC transmission systems in Sweden and India. It describes the components used in HVDC including converter stations, rectifiers, filters and inverters. It discusses reasons for using HVDC over HVAC such as lower transmission losses and costs. Limitations of HVDC include costly terminal equipment and complex control systems. Applications include long distance and asynchronous transmission. The future may include fully converting generation to distribution systems to direct current.
Islands in power systems
Types of islands in power systems with DR
Issues with unintentional islands
Methods of protecting against unintentional islands
Standard testing for unintentional islanding
Advanced testing of inverters for anti-islanding functionality
Probability of unintentional islanding
The future of anti-islanding protection
Flexible Ac Transmission Systems 2Mark Materials and Question Bank
The document provides information about Flexible AC Transmission Systems (FACTS) including:
1) FACTS devices use power electronics to control parameters like voltage, impedance, and phase angle to improve power flow in transmission systems.
2) The main objectives of FACTS are to increase power transfer capability and control designated power flow routes.
3) The first STATCOM was implemented in 1955 by TVA to strengthen transmission ties, while the first UPFC was implemented in 1998 by AEP to provide full control of voltage, impedance, and phase angle.
What's hot (20)
Principles of Power Systems V.K Mehta Complete Book - Chapter 7
Principles of Power Systems V.K Mehta Complete Book - Chapter 7
Saturated Reactor(SR) & Thyristor Controlled Reactor(TCR)
Saturated Reactor(SR) & Thyristor Controlled Reactor(TCR)
Enhancement of power quality in distribution system using d statcom
Enhancement of power quality in distribution system using d statcom
Flexible Ac Transmission Systems 2Mark Materials and Question Bank
Flexible Ac Transmission Systems 2Mark Materials and Question Bank
Similar to Voltage and Power Stability of HVDC-2018
major project seminar.pptx
The document describes a major project on a VSC-based HVDC transmission system for connecting offshore wind power plants. It discusses how offshore wind farms have higher potential for power generation due to faster, more constant winds. However, long distance transmission requires HVDC technology like VSC HVDC due to its flexibility and controllability. The project aims to model and analyze the behavior of a VSC-HVDC system connected to offshore winds farms and verify it through a laboratory setup. It covers topics like converter topologies, control strategies, interfacing wind turbines, and regulating power flow.
Hvdc transmission by pankaj chaudhary
This document is a seminar paper on HVDC (high voltage direct current) transmission presented by Pankaj Chaudhary. HVDC transmission has advantages over HVAC like lower transmission losses over long distances. The first HVDC link was between Gotland and mainland Sweden in 1954. HVDC uses direct current for transmission and converters are used to convert AC to DC. It allows asynchronous connections of AC networks and bulk power transmission over long distances or underwater.
hvdc transimission line
The document discusses Mohd Abdul Sohail's seminar on high voltage direct current (HVDC) transmission. It introduces HVDC, describes the basic principles and components of HVDC systems. The document compares the cost of HVDC to HVAC transmission and lists several advantages of HVDC, such as its ability to transmit electricity over long distances and interconnect separate power grids. It also notes some disadvantages of HVDC, such as higher costs and need for more maintenance of insulators. The objectives of HVDC control systems are to ensure efficient, stable and flexible operation during normal and abnormal conditions.
HVDC & FACTS
This document presents information on HVDC transmission and FACTS technology. It discusses the advantages and disadvantages of HVDC transmission, including its ability to transmit power over long distances with lower losses compared to AC transmission. It also introduces various FACTS controllers and their advantages in enhancing power flow control and transmission capacity. While FACTS can improve AC system utilization, HVDC may be less expensive for long distance overhead transmission or submarine cables. Both technologies are complementary with HVDC suitable for interconnecting unsynchronized AC systems and FACTS providing added benefits within AC networks.
FACTS Flexible AC Transmission System.ppt
This technical presentation discusses Flexible AC Transmission Systems (FACTS) which use power electronics to control power flows in transmission networks. It describes how FACTS devices allow for controlled power flow as opposed to the natural free flow mode of operation. Various FACTS controllers are introduced, including the Static VAR Compensator (SVC), Thyristor Controlled Series Capacitor (TCSC), Thyristor Controlled Phase Shifting Transformer (TCPST), Static Synchronous Compensator (STATCOM), and Unified Power Flow Controller (UPFC). FACTS devices provide benefits such as increasing transmission line loading and improving system stability.
Modelling and Operation of HVDC Based Power Transmission System
Submodule overcurrent caused by DC pole-to-pole fault in modular multilevel converter HVDC MMC-HVDC system is one of the important research objects about its electrical characteristics. In this paper, the fault mechanism before and after the converter blocked was analyzed respectively and the circuit model for the analysis of submodule overcurrent was explored. The analytic equation for overcurrent calculation was deduced and a detailed analysis was also performed. The changes of submodule overcurrent stress with different circuit parameters were obtained and the key issues were also summed up. The results indicate that the submodule overcurrent is the AC system three-phase short-circuit current superposed the discharging current before the converter blocked, and the submodule overcurrent is the AC system three-phase short-circuit current superposed the valve reactor freewheeling current after the converter blocked. From the computation and simulation results, it is concluded that the analytical method is feasible and its calculation results are comparatively precise. Mohd Liaqat "Modelling and Operation of HVDC Based Power Transmission System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd20319.pdf
Paper URL: https://www.ijtsrd.com/engineering/electrical-engineering/20319/modelling-and-operation-of-hvdc-based-power-transmission-system/mohd-liaqat
RGPV EX7102 unit I
This document provides an overview of EHV AC and DC transmission. It discusses:
1) The construction of EHV AC and DC transmission links, including the components of AC systems and the types of DC links.
2) The limitations and advantages of AC and DC transmission. AC faces challenges with reactive power and stability over long distances, while DC has benefits of lower losses and greater power control.
3) The principal applications of AC and DC transmission, with DC preferred for long distance, asynchronous connections, and submarine cables due to its advantages over AC in these scenarios.
Transformer-Less UPFC for Wind Turbine Applications
In this paper, an innovative technique with a new concept of transformer-less unified power flow controller
(UPFC) is implemented. The construction of the conventional UPFC that consists of two back-to-back inverters
which results in complexity and bulkiness which involves the transformers which are complication for
isolation & attaining high power rating with required output waveforms. To reduce a above problem to a
certain extent, a innovative transformer-less UPFC based on less complex configuration with two cascade
multilevel inverters (CMIs) has been proposed. Unified power flow controller (UPFC) has been the most
versatile Flexible AC Transmission System (FACTS) device due to its ability to control real and reactive power
80w on transmission lines while controlling the voltage of the bus to which it is connected. UPFC being a
multi-variable power system controller it is necessary to analyze its effect on power system operation. The
new UPFC offers several merits over the traditional technology, such as Transformer-less, Light weight, High
efficiency, Low cost & Fast dynamic response. This paper mainly highlights the modulation and control for
this innovative transformer-less UPFC, involving desired fundamental frequency modulation (FFM) for low
total harmonic distortion (THD), independent active and reactive power control over the transmission line,
dc-link voltage balance control, etc. The unique capabilities of the UPFC in multiple line compensation are
integrated into a generalized power flow controller that is able to maintain prescribed, and independently
controllable, real power & reactive power flow in the line. UPFC simply controls the magnitude and angular
position of the injected voltage in real time so as to maintain or vary the real and reactive power flow in the
line to satisfy load demand & system operating conditions. UPFC can control various power system
parameters, such as bus voltages and line flows. The impact of UPFC control modes and settings on the
power system reliability has not been addressed sufficiently yet. Cascade multilevel inverters has been
proposed to have an overview of producing the light weight STATCOM’s which enhances the power quality at
the output levels.When the multilevel converter is applied to STATCOM, each of the cascaded H-bridge
converters should be equipped with a galvanically isolated and floating dc capacitor without any power
source or circuit. This enables to eliminate a bulky, heavy, and costly line-frequency transformer from the
cascade STATCOM. When no UPFC is installed, interruption of either three-phase line due to a fault reduces
an active power flow to half, because the line impedance becomes double before the interruption. Installing
the UPFC makes it possible to control an amount of active power flowing through the transmission system.
Results has been shown through MATLAB Simulink
Power Electronics Application: HVDC
These slides present the introduction to HVDC application to smart micro-grid. Later the control strategies will be presented.
Steady State Fault Analysis of VSC- HVDC Transmission System
This document summarizes research on modeling and analyzing steady state faults in a voltage source converter (VSC) high voltage direct current (HVDC) transmission system. It presents the following:
1) A dynamic model of a VSC-HVDC back-to-back system is developed including VSC converters, AC and DC filters, and cables. Vector control is used to independently control active and reactive power.
2) Simulation cases demonstrate startup and steady state response, as well as the system's ability to independently control active and reactive power through step changes.
3) Additional cases show the system maintains stability under a voltage sag at one station and a three-phase fault at the other station, recovering quickly
PERFORMANCE OF LFAC TRANSMISSSION SYSTEM FOR TRANSIENT STATE
This paper deals with the transient performance of a low - frequency ac (20Hz) transmission system for a wind ramp event . The LFAC system is interconnected with the 50Hz grid with a Cycloconverter . The wind power from the offshore is in the form of dc,and is interconnected to the LFAC transmission line with a twelve - pulse thyristor inverter. The graphs of transient response of proposed system parameters are plotted. The circuit model of LFAC system is simulated in MATLAB/SIMULINK.
Comparative evaluation of hvdc
Alternating current (AC) is the main driving force in the industries and residential areas, but for the long transmission line (more than 650 KM) AC transmission is more expensive than that of direct current (DC). Technically, AC transmission line control is more complicated because of the frequency. DC transmission does not have these limitations, which has led to build long HVDC transmission lines over the last 40 years. HVDC technology made possible to transfer bulk power over long distances.
High Voltage Direct Current Transmission System Report
The development of HVDC (High Voltage Direct Current) transmission system dates back to the 1930s when mercury arc rectifiers were invented. Since the 1960s, HVDC transmission system is now a mature technology and has played a vital part in both long distance transmission and in the interconnection of systems. Transmitting power at high voltage and in DC form instead of AC is a new technology proven to be economic and simple in operation which is HVDC transmission. HVDC transmission systems, when installed, often form the backbone of an electric power system. They combine high reliability with a long useful life. An HVDC link avoids some of the disadvantages and limitations of AC transmission. HVDC transmission refers to that the AC power generated at a power plant is transformed into DC power before its transmission. At the inverter (receiving side), it is then transformed back into its original AC power and then supplied to each household. Such power transmission method makes it possible to transmit electric power in an economic way.
Sub-station training REPORT
This document provides an introduction and overview of a 33/11 kV substation in Uttar Pradesh, India. It discusses the key components of the substation including transformers, circuit breakers, insulators, protective equipment. It also covers the types of substations, earthing design methodology, and materials used for earthing. The document aims to provide training on the design, components and operation of electrical substations.
Hvdc transmission
1. HVDC transmission allows for more efficient long distance power transmission compared to AC transmission by reducing losses. It also allows for interconnection between different frequency AC systems.
2. The key components of an HVDC system are converter stations at each end containing thyristor valves to convert AC to DC or vice versa, transmission lines to carry DC power, and control systems.
3. There are three main conversion technologies: natural commutated converters using thyristors, capacitor commutated converters using thyristors and capacitors, and voltage source converters using devices like GTOs or IGBTs which allow for faster switching.
sub-station training report
This document provides an introduction and overview of a 33/11 kV substation in Uttar Pradesh, India. It discusses the key components of the substation including transformers, circuit breakers, insulators, and earthing systems. The substation steps down power from 33 kV to 11 kV and distributes it to nearby areas. Earthing is an important consideration in substation design for safety and preventing potential gradients. Transformers, circuit breakers, and other equipment are discussed in terms of their functions and specifications at this particular substation.
hvdc PPT.pptx
The Solar System[c] is the gravitationally bound system of the Sun and the objects that orbit it. The largest of such objects are the eight planets, in order from the Sun: four terrestrial planets named Mercury, Venus, Earth and Mars, two gas giants named Jupiter and Saturn, and two ice giants named Uranus and Neptune. The terrestrial planets have a definite surface and are mostly made of rock and metal. The gas giants are mostly made of hydrogen and helium, while the ice giants are mostly made of 'volatile' substances such as water, ammonia, and methane. In some texts, these terrestrial and giant planets are called the inner Solar System and outer Solar System planets respectively.
upfc
The document discusses applications of UPFC/IPFC technology in power systems. It lists several applications including congestion management, ATC improvement, reactive power control, transient stability enhancement, and oscillation damping. It then describes in more detail how a UPFC can provide dynamic voltage control and damping control through active power modulation. It also discusses how an IPFC can transfer power between transmission lines.
Improving Fault Ride ThroughCapabilities For Offshore PMSG Wind Farms Connect...
Abstract:-Fault ride through (FRT) is one of the most dominant grid connection requirements to be met by Wind Energy Conversion Systems (WECS). In occurrence of grid voltage dips, a mismatch is produced between the generated active power and the active power delivered to the grid. Fault ride through necessity demands management of this mismatch, which is a challenge for the WECS. Considering the development of full scale converter based wind turbine generators (WTG), use of unit rated DC controlled resistors for each of the full scale AC-DC-AC converter system of the individual turbines has been proposed instead of the one on the high voltage direct current (HVDC) line side. In this paper, both the cases have been simulated and their performances are found to be similar. Thus, it justifies that the DC resistors in the full scale converters are sufficient to handle the FRT conditions.
Similar to Voltage and Power Stability of HVDC-2018 (20)
Modelling and Operation of HVDC Based Power Transmission System
Modelling and Operation of HVDC Based Power Transmission System
Transformer-Less UPFC for Wind Turbine Applications
Transformer-Less UPFC for Wind Turbine Applications
Steady State Fault Analysis of VSC- HVDC Transmission System
Steady State Fault Analysis of VSC- HVDC Transmission System
PERFORMANCE OF LFAC TRANSMISSSION SYSTEM FOR TRANSIENT STATE
PERFORMANCE OF LFAC TRANSMISSSION SYSTEM FOR TRANSIENT STATE
High Voltage Direct Current Transmission System Report
High Voltage Direct Current Transmission System Report
Improving Fault Ride ThroughCapabilities For Offshore PMSG Wind Farms Connect...
Improving Fault Ride ThroughCapabilities For Offshore PMSG Wind Farms Connect...
Recently uploaded
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, SerbiaKuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Hori...
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Horizon Generation
5214-1693458878915-Unit 6 2023 to 2024 academic year assignment (AutoRecovere...
Bigdata of technology
New techniques for characterising damage in rock slopes.pdf
rock mass characterization and New techniques for characterising damage in rock slopes
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Literature Review Basics and Understanding Reference Management.pptx
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
International Conference on NLP, Artificial Intelligence, Machine Learning an...
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.
Recycled Concrete Aggregate in Construction Part III
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
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%.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
22CYT12-Unit-V-E Waste and its Management.ppt
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.
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
6th International Conference on Machine Learning & Applications (CMLA 2024)
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
哪里办理(csu毕业证书)查尔斯特大学毕业证硕士学历原版一模一样
原版一模一样【微信：741003700 】【(csu毕业证书)查尔斯特大学毕业证硕士学历】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Recently uploaded (20)
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Hori...
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Hori...
5214-1693458878915-Unit 6 2023 to 2024 academic year assignment (AutoRecovere...
5214-1693458878915-Unit 6 2023 to 2024 academic year assignment (AutoRecovere...
New techniques for characterising damage in rock slopes.pdf
New techniques for characterising damage in rock slopes.pdf
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Literature Review Basics and Understanding Reference Management.pptx
Literature Review Basics and Understanding Reference Management.pptx
International Conference on NLP, Artificial Intelligence, Machine Learning an...
International Conference on NLP, Artificial Intelligence, Machine Learning an...
Recycled Concrete Aggregate in Construction Part III
Recycled Concrete Aggregate in Construction Part III
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
6th International Conference on Machine Learning & Applications (CMLA 2024)
6th International Conference on Machine Learning & Applications (CMLA 2024)
Voltage and Power Stability of HVDC-2018
- 2. VOLTAGE AND POWER STABILITY OF HVDC SYSTEM BY PRABIN KAFLE 17WJ1AO293 GURU NANAK INSTITUTIONS TECHNICAL CAMPUS IBRAHIMPATNAM,RR DIST-501506
- 3. -HVDC- HIGH VOLTAGE DIRECT CURRENT
- 4. CONTENTS INTRODUCTION TYPES OF HVDC SYSTEM HISTORY HOW DOES IT WORKS? ADVANTAGES/DISADVANTAGES CONCLUSION
- 5. INTRODUCTION HVDC STANDS FOR HIGH VOLTAGE DIRECT CURRENT AND IS TODAY A WELL-PROVEN TECHNOLOGY EMPLOYED FOR POWER TRANSMISSION ALL OVER THE WORLD. HVDC TECHNOLOGY IS USED TO TRANSMIT ELECTRICITY OVER LONG DISTANCE BY COVER HEAD TRANSMISSION LINES OR SUBMARINE CABLES.
- 6. HISTORY • THE DEVELOPMENT OF DIRECT CURRENT (DC) TRANSMISSION DATES BACK TO THE 1930’S AND HAS BEEN A PROVEN TECHNOLOGY SINCE THE FIRST MAJOR INSTALLATIONS IN 1954. OPERATING AT ±500 KILOVOLTS, THE LINE IS CAPABLE OF TRANSMITTING UP TO 3,100 MW OF POWER. IN TERMS OF OPERATING VOLTAGE AND CAPACITY, THE PACIFIC INTERTIE IS SIMILAR TO THE CLEAN LINE TRANSMISSION LINE PROJECTS, WHICH WILL OPERATE AT ±600 KILOVOLTS AND DELIVER UP TO 3,500 MW OF POWER.
- 7. TYPES OF HVDC SYSTEM HVDC SYSTEM Single-infeed system Multi-infeed system Ring-type multi- infeed system Chain-type multi- infeed system
- 8. STABILITY OF HVDC SYSTEM A. STEADY STATE STABILITY I. STATIC STABILITY II. DYNAMIC STABILITY B. TRANSIENT STABILITY
- 9. VOLTAGE STABILITY • FOR THE SINGAL-INFEED HVDC SYSTEM MODEL, THE VOLTAGE STABILITY FACTOR(VSF) IS DEFINE AS VSF= ∆𝑈 ∆𝑄 WHERE, VSF= VOLTAGE SENSITIVITY OF AC/DC INTERCONNECTION ∆U= THE INCREMENTAL CHANGE IN THE CONVERTER AC BUS VOLTAGE ∆Q= THE INCREMENTAL CHANGE IN THE INJECTED REACTIVE POWER
- 10. WORLDWIDE INSTALLED CAPACITY OF HVDC LINKS
- 11. POWER STABILITY
- 12. HOW IT WORKS
- 13. HVDC IN INDIA
- 14. ADVANTAGES OF STABILITY OF HVDC SYSTEM FULL CONTROL OVER POWER TRANSMISSION. PERFORM EFFICIENT AND STABLE OPERATION. MAXIMUM FLEXIBILITY OF POWER CONTROL WITHOUT COMPROMISING THE SAFETY OF EQUIVALENT. HIGHER VOLTAGE LEVEL AND POWER RATING. LOWER POWER LOSSES. LOWER COST OF CONVERTER.
- 15. DISADVANTAGES OF STABILITY OF HVDC SYSTEM LOWER VOLTAGE LEVEL AND POWER RATING. HIGH LOSS HIGHER COST OF CONVERTER CURRENT DIRECTION CANNOT BE CHANGED REACTIVE POWER CONSUMPTION RISK OF COMMUTATION FAILURES
- 16. CONCLUSION • THIS PRESENTATION PROVIDED AN OVERVIEW OF VOLTAGE/POWER STABILITY ANALYSIS METHODOLOGIES APPROPRIATE FOR NEWLY EMERGING HVDC SYSTEM CONFIGURATIONS. • IT WAS SHOWN HOW THE METHODS SUITED FOR THE SINGLE- INFEED SYSTEM MODEL COULD BE EXTENDED TO THE HIGHER DIMENSION HVDC SYSTEM MODELS.