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The Anatomy of a Power Grid Blackout
In 1895 the Westinghouse Company completed the construction of the Niagara Falls
power station with a capacity of roughly 7.5 megawatts, produced from hydro turbines,
using patents and designs by Nikola Tesla. The following year General Electric, who had
been awarded the contract for the transmission and distribution lines, completed the
transmission system necessary to carry the power to the nearby city of Buffalo. This
polyphase ac system was perhaps the greatest of its time and one of the first true power
systems in the world. Today the North American power system spans the countries of the
United States, Canada and Mexico. This system incorporates tens of thousands of
transmission lines, generating stations, transformers, complex power electronic
transmission equipment, and a myriad of automatic control and protection systems which
keep this vastly complex system operating twenty-four hours a day, seven days a week,
year after year.
Deip soni_Direct current
Direct current (DC) is an unidirectional electric current that flows in a constant direction, distinguishing it from alternating current (AC). DC is produced by sources like batteries and solar cells. It can flow through conductors like wires as well as semiconductors and vacuums. While early electric power transmission used DC, AC distribution is now dominant due to advantages in transforming and transmitting power over long distances. However, DC is still used for applications requiring direct current flow, like battery charging and most electronic systems.
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This document provides an introduction to electric power systems. It discusses the key components of power systems including generators, transformers, substations, and loads. It also outlines the different voltage levels used in transmission and distribution networks. Specifically, it notes that transmission occurs at voltages such as 765kV, 400kV, and 220kV, while distribution occurs at lower voltages like 11kV, 415V, and 230V for households. The document aims to give students an overview of the structure and components that make up electric power systems.
Transmission and Distribution of Electric Power system
The document presents information about electric power transmission and distribution systems. It discusses the stages of a power system including generation, transmission, and distribution of electric power. It also describes the different types of transmission lines including primary and secondary transmission lines. Finally, it provides details about distribution systems including feeders, distributors, and service mains.
Short circuit
Electric power systems are designed to distribute power safely and reliably while preventing short circuits. Short circuits occur when a abnormal connection allows current to flow along an unintended path, potentially causing equipment damage, fires, or injury. They produce a very high current that generates a large amount of heat quickly. To protect systems, circuit breakers and fuses are used to interrupt the current in the event of a short circuit.
Basic Circuit Theory
This document provides an overview of basic circuit theory concepts. It defines key electrical terms like charge, current, voltage, power, and energy. It describes different circuit elements including resistors, capacitors, and inductors. It introduces important circuit analysis laws and theorems like Ohm's law, Kirchhoff's laws, and Thevenin's and Norton's theorems. The document uses diagrams and equations to illustrate electrical concepts and is intended to provide foundational knowledge of circuit theory.
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The Anatomy of a Power Grid Blackout
In 1895 the Westinghouse Company completed the construction of the Niagara Falls
power station with a capacity of roughly 7.5 megawatts, produced from hydro turbines,
using patents and designs by Nikola Tesla. The following year General Electric, who had
been awarded the contract for the transmission and distribution lines, completed the
transmission system necessary to carry the power to the nearby city of Buffalo. This
polyphase ac system was perhaps the greatest of its time and one of the first true power
systems in the world. Today the North American power system spans the countries of the
United States, Canada and Mexico. This system incorporates tens of thousands of
transmission lines, generating stations, transformers, complex power electronic
transmission equipment, and a myriad of automatic control and protection systems which
keep this vastly complex system operating twenty-four hours a day, seven days a week,
year after year.
Deip soni_Direct current
Direct current (DC) is an unidirectional electric current that flows in a constant direction, distinguishing it from alternating current (AC). DC is produced by sources like batteries and solar cells. It can flow through conductors like wires as well as semiconductors and vacuums. While early electric power transmission used DC, AC distribution is now dominant due to advantages in transforming and transmitting power over long distances. However, DC is still used for applications requiring direct current flow, like battery charging and most electronic systems.
L2 introduction to power system
This document provides an introduction to electric power systems. It discusses the key components of power systems including generators, transformers, substations, and loads. It also outlines the different voltage levels used in transmission and distribution networks. Specifically, it notes that transmission occurs at voltages such as 765kV, 400kV, and 220kV, while distribution occurs at lower voltages like 11kV, 415V, and 230V for households. The document aims to give students an overview of the structure and components that make up electric power systems.
Transmission and Distribution of Electric Power system
The document presents information about electric power transmission and distribution systems. It discusses the stages of a power system including generation, transmission, and distribution of electric power. It also describes the different types of transmission lines including primary and secondary transmission lines. Finally, it provides details about distribution systems including feeders, distributors, and service mains.
Short circuit
Electric power systems are designed to distribute power safely and reliably while preventing short circuits. Short circuits occur when a abnormal connection allows current to flow along an unintended path, potentially causing equipment damage, fires, or injury. They produce a very high current that generates a large amount of heat quickly. To protect systems, circuit breakers and fuses are used to interrupt the current in the event of a short circuit.
Basic Circuit Theory
This document provides an overview of basic circuit theory concepts. It defines key electrical terms like charge, current, voltage, power, and energy. It describes different circuit elements including resistors, capacitors, and inductors. It introduces important circuit analysis laws and theorems like Ohm's law, Kirchhoff's laws, and Thevenin's and Norton's theorems. The document uses diagrams and equations to illustrate electrical concepts and is intended to provide foundational knowledge of circuit theory.
Iaetsd placement of super conducting fault current limiters to mitigate
This document discusses the use of superconducting fault current limiters (SFCLs) to mitigate fault currents in smart grids with different types of distributed generation sources like wind farms, solar panels, and diesel generators. The author models an SFCL and a smart grid system in MATLAB/Simulink. Simulation results show that locating an SFCL at the point where distributed generation connects to the grid (Location 3) provides the best performance, reducing fault currents from all distributed generation sources by 68-84% while also limiting fault current from the main grid. In contrast, placing SFCLs upstream in the distribution system can unexpectedly increase fault currents from some distributed generators.
Electrification of railway, problems and types of solution
This document discusses power quality issues in railway electrification systems. It outlines several key power quality problems for railway networks including system imbalance caused by single-phase loads, harmonics from AC/DC converters, reactive power from PWM converters, voltage problems from imbalances, and arcing at pantograph/catenary interfaces. It also discusses impacts on signaling, communications, and upstream networks. The document then categorizes various methods for improving power quality based on configuration, power source, equipment used, and compensation theories. These include symmetric three-phase loads, delta-wye transformers, passive and active filters, and compensation of non-active currents.
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The document discusses the key elements of a power system, including generation, transmission, distribution, and load. It describes the different types of power generation such as fossil, hydro, and nuclear. It then explains the transmission system, how power is transmitted through overhead lines or underground cables. Finally, it discusses power distribution to load through lower voltage networks.
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In early days, there was a little demand for electrical energy so that small power stations were built to supply lighting and heating loads. However, the widespread use of electrical energy by modern civilisation has necessitated to produce bulk electrical energy economically and efficiently.
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The document discusses the topics of power transmission and distribution systems. It provides an overview of the different stages of a power system: generation, transmission, and distribution. It describes how power is transmitted at high voltages through primary transmission lines to receiving stations, then through secondary transmission lines and distribution systems at lower voltages to reach customers. The document also defines some key terms related to power distribution systems, such as feeders, distributors, and service mains.
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This document discusses the analysis of harmonics generated in a power system due to transformer loads using artificial neural networks. Transformers are a major nonlinear component in power systems and their operation can generate harmonics. These harmonics can impact transformer performance and quality of power delivered. The document introduces harmonics sources in power systems, describes how transformer nonlinearity generates harmonics, and presents an artificial neural network technique for analyzing harmonics levels from transformer loads.
Power quality-disturbances and monitoring Seminar
The document provides an overview of power quality monitoring and automatic power quality disturbance classification. It defines power quality and discusses increased interest in power quality. It describes various power quality disturbances like voltage fluctuations, harmonics, sags, and swells. It then discusses automatic power quality disturbance classifiers which use techniques like segmentation, feature extraction, and classification to identify different disturbance types. Neural networks and expert systems are presented as methods for automatic classification. The document emphasizes the importance of power quality monitoring and classification systems.
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This document provides an overview of basic electrical concepts including electricity, current, voltage, resistance, circuits, and types of current (DC and AC). It defines key terms, describes the components and types of electric circuits, and distinguishes between direct and alternating current. The purpose is to equip students with fundamental electrical knowledge needed to diagnose and configure computer systems and networks.
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The document discusses various topics related to electrical circuits and measurements. It provides definitions for Ohm's law and its limitations, describes the differences between moving coil and moving iron instruments, lists the operating forces in indicating instruments, and defines terms like RMS value and power factor. It also gives examples of circuit analysis questions and explains the construction and working of a single phase energy meter in detail over multiple paragraphs.
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Harmonics In Transformer pdf
The project focuses on the harmonic analysis of transformer during the switching transient period. Measuring fundamental and second harmonics of differential current, an algorithm based on the Discrete Fourier Transform and an amplitude estimator are used to simulate and list various harmonic components of current and flux. Generalized functions for describing the relationships between resultant flux and harmonic components are derived. This is important to find these relations for further use in detecting non-linearity and elimination of harmonic components.
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This document describes the design and implementation of a single phase earth fault relay with an alarm system. The relay was designed using an embedded system to reduce components, keep the system simple and cost effective. It consists of current sensors on the phase and neutral lines, a microcontroller to monitor current levels, and an alarm and switch driver to isolate the system if an imbalance is detected, indicating an earth fault. The objectives are to detect earth faults, measure phase and neutral currents, and disconnect power on a fault. This type of relay provides protection for electrical equipment and humans from earth faults.
powerelectronics-introduction-Final.pptx
It's an introduction to the subject domain of Power Electronics in the B.Sc. Electrical Engineering
It is a brief Introduction.
Chapter 1: Introduction to Principles of Electric and Electronics
The document provides an overview of principles of electric and electronics, including:
- Basic components of an electrical system including sources, control, loads, and transmission.
- Distinguishing between electromotive force (EMF) and potential difference.
- Defining voltage, current, and units of measurement like volts and amps.
- Describing passive circuit elements like resistors and capacitors, and active elements like batteries.
- Introducing concepts of charge, circuits, and measurement instruments.
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Dc machines
A DC machine is an electromechanical energy alteration device. The working principle of a DC machine is when electric current flows through a coil within a magnetic field, and then the magnetic force generates a torque that rotates the dc motor.
IEEE Industrial Electronics Conference (IECON2016) - Dialogue Session
My poster for the dialogues session of the 42nd Annual Conference of IEEE Industrial Electronics Society (IECON) 2016, Firenze (Florence), Italy.
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To analyze the basic Electrical circuits and to understand the working of Electrical machines and its application in various fields.
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This document summarizes a Power Electronics course offered to Electronics Technology majors. The course (code 261ELC) studies solid state devices used in power electronics and their application in converters, choppers, AC voltage regulators, inverters, and motor control. It has prerequisites of 166ELC and 161ELC. The course objectives are to describe the basic conditions for firing and commutating power electronic devices to use them in controlled rectifier, DC and AC chopper, inverter circuits and motor control applications. It meets for 3 lecture hours, 2 practical hours over 13 weeks for a total of 4 credit hours.
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Electric power system
The electric power system consists of generation, transmission, and distribution with the goal of supplying electric power to various loads. Generation facilities convert energy sources like coal, gas, and hydro into electrical energy. Transmission systems move power over long distances at high voltages via overhead lines or underground cables. Distribution systems then deliver power to customers through lower voltage infrastructure. The system aims to reliably meet the varying power demands of residential, commercial, and industrial consumers.
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This document summarizes the design of a wireless battery charger that uses radio frequency (RF) signals to charge AAA batteries. The charger has three main parts: a transmitter that generates RF signals at 900MHz, a receiving antenna, and a charging circuit. The charging circuit includes a full-wave rectifier that converts the received RF signals to direct current (DC) to charge the battery. The design is divided into transmitter specifications, antenna selection, receiver design, and the charging circuit. Limitations including power loss and efficiency are discussed along with potential improvements such as using higher gain antennas or additional rectifiers.
Supply system (Electrical Power System)
In early days, there was a little demand for electrical energy so that small power stations were built to supply lighting and heating loads. However, the widespread use of electrical energy by modern civilisation has necessitated to produce bulk electrical energy economically and efficiently.
The increased demand of electrical energy can be met by building big power stations at favourable places where fuel (coal or gas) or water energy is available in abundance.
Circuit theorem
DC Circuit theorem. This Topic have all theorem of solving DC Circuit. This is very important for every EEE student. Thank you for watch my slide
High Voltage Direct Current Transmission PPT
This document provides an overview of a student's end-semester project presentation on high voltage direct current (HVDC) transmission. The presentation covers the history, working principles, components, advantages, disadvantages, applications, and future prospects of HVDC transmission. It was presented by Santosh Kumar Yadav to the Department of Electrical Engineering at Gautam Buddha University in India under the guidance of Dr. Shabana Urooj.
Transmission and Distribution of Electric Power system
The document discusses the topics of power transmission and distribution systems. It provides an overview of the different stages of a power system: generation, transmission, and distribution. It describes how power is transmitted at high voltages through primary transmission lines to receiving stations, then through secondary transmission lines and distribution systems at lower voltages to reach customers. The document also defines some key terms related to power distribution systems, such as feeders, distributors, and service mains.
Analysis of generated harmonics due to transformer load on power system using
This document discusses the analysis of harmonics generated in a power system due to transformer loads using artificial neural networks. Transformers are a major nonlinear component in power systems and their operation can generate harmonics. These harmonics can impact transformer performance and quality of power delivered. The document introduces harmonics sources in power systems, describes how transformer nonlinearity generates harmonics, and presents an artificial neural network technique for analyzing harmonics levels from transformer loads.
Power quality-disturbances and monitoring Seminar
The document provides an overview of power quality monitoring and automatic power quality disturbance classification. It defines power quality and discusses increased interest in power quality. It describes various power quality disturbances like voltage fluctuations, harmonics, sags, and swells. It then discusses automatic power quality disturbance classifiers which use techniques like segmentation, feature extraction, and classification to identify different disturbance types. Neural networks and expert systems are presented as methods for automatic classification. The document emphasizes the importance of power quality monitoring and classification systems.
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This document provides an overview of basic electrical concepts including electricity, current, voltage, resistance, circuits, and types of current (DC and AC). It defines key terms, describes the components and types of electric circuits, and distinguishes between direct and alternating current. The purpose is to equip students with fundamental electrical knowledge needed to diagnose and configure computer systems and networks.
Basic electrical and electronics engineering
The document discusses various topics related to electrical circuits and measurements. It provides definitions for Ohm's law and its limitations, describes the differences between moving coil and moving iron instruments, lists the operating forces in indicating instruments, and defines terms like RMS value and power factor. It also gives examples of circuit analysis questions and explains the construction and working of a single phase energy meter in detail over multiple paragraphs.
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Harmonics In Transformer pdf
The project focuses on the harmonic analysis of transformer during the switching transient period. Measuring fundamental and second harmonics of differential current, an algorithm based on the Discrete Fourier Transform and an amplitude estimator are used to simulate and list various harmonic components of current and flux. Generalized functions for describing the relationships between resultant flux and harmonic components are derived. This is important to find these relations for further use in detecting non-linearity and elimination of harmonic components.
Design and Implementation of a Single Phase Earth Fault Relay
This document describes the design and implementation of a single phase earth fault relay with an alarm system. The relay was designed using an embedded system to reduce components, keep the system simple and cost effective. It consists of current sensors on the phase and neutral lines, a microcontroller to monitor current levels, and an alarm and switch driver to isolate the system if an imbalance is detected, indicating an earth fault. The objectives are to detect earth faults, measure phase and neutral currents, and disconnect power on a fault. This type of relay provides protection for electrical equipment and humans from earth faults.
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Brief information of Electricity and wiring
Electricity is a form of energy involving the flow of electrons. Benjamin Franklin first invented electricity and studied it, while Alessandro Volta discovered that chemical reactions can produce electricity and invented the first battery. Electricity can be generated through various means like heat, falling water, wind, solar, and chemical energy. There are two types of electric current: direct current where electrons flow in one direction and alternating current where electrons repeatedly change direction. Electricity has many applications like powering homes and industry as well as operating machines.
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Electrical System Design Initial
This document provides an introduction to designing electrical power systems. It outlines several key factors to consider, including safety, reliability, flexibility, maintenance, and cost. Safety of equipment and personnel is the most important design consideration. The system should also be reliable, easy to operate and maintain, and able to accommodate future load and equipment changes. Additional topics covered include power sources, supply systems, climate conditions, load calculations, and basic electrical theory concepts needed for design such as Ohm's law, voltage, current, resistance, inductance, and capacitance.
Calculation Method to Estimate Electrostatic and Electromagnetic Induction in...
Calculation Method to Estimate Electrostatic and Electromagnetic Induction in...Power System Operation
1) When telecommunication cables are installed near high-voltage power lines, induction can cause voltage in the cables that threatens worker safety and equipment functionality.
2) Induction occurs through either electrostatic or electromagnetic mechanisms. Electrostatic induction is caused by capacitance between lines, while electromagnetic induction is caused by current in power lines generating magnetic fields.
3) Calculations are performed to estimate induced voltages based on line parameters and arrangements. If voltages exceed limits, countermeasures like rerouting or underground installation are considered in facility design.Unit 1.doc
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2. It introduces modern electron theory and defines an atom as consisting of a positively charged nucleus surrounded by negatively charged electrons.
3. Key circuit elements like resistors, capacitors, and inductors are defined in terms of how they store or dissipate electrical energy. Kirchhoff's laws and techniques for analyzing circuits like source transformations are also summarized.
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2. A brief history of power electronics from vacuum tube rectifiers to modern devices like IGBTs.
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4. A simple example of a dc-dc buck converter to illustrate basic power conversion principles.
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BHUVI REPORT WORK DETAIL
The document provides information about basic electrical and electronic components. It discusses resistors, inductors, capacitors, cells/batteries, generators, motors, and their characteristics. Resistors oppose current flow and lower voltage. Inductors store energy in magnetic fields. Capacitors store electric charge. Cells/batteries convert chemical into electrical energy. Generators convert mechanical into electrical energy. Motors convert electrical into mechanical energy. The document also covers international terminal markings, types of connections for resistors/motors, and applications of these components.
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This document provides an introduction to an electrical engineering course, including outlines of its modules and course outcomes. The modules cover topics such as power generation, DC circuits, AC fundamentals, transformers, motors, and electrical safety. Power can be generated through conventional methods like thermal, hydroelectric, or non-conventional methods like wind, solar and fuel cells. Electrical power systems are represented using single line diagrams showing generators, transformers and loads connected by transmission lines.
Harmonic Mitigation in Distribution System by using Passive Filters
The advent of power electronics and computerized equipment in recent decades has brought enhanced efficiency and improved system but at the same time also created harmonics and waveform distortion to the power system network. Due to the growing use of nonlinear load equipment and new technologies in buildings, harmonic currents and voltages generated in distribution systems pose a new problem for electrical engineers. This is a serious problem when power quality is a prime concern. Harmonics are the main types of power quality problem that are very common to the power system containing electric arc furnace EAF . Electric arc furnace EAFs are widely used in steelmaking and in melting of nonferrous metals. In this paper, EAF is presented guide lines for the accurate evaluation of harmonics generated in No. 3 Steel Mill, Ywama, Yangon. Passive filters have been most commonly used to limit the flow of harmonic currents in distribution systems. Their performance is limited to a few harmonics, and they can introduce resonance in the power system. Nyein Nyein Chan | Hnin Wai Hlaing "Harmonic Mitigation in Distribution System by using Passive Filters" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-1 , December 2018, URL: http://www.ijtsrd.com/papers/ijtsrd19027.pdf
http://www.ijtsrd.com/engineering/electrical-engineering/19027/harmonic-mitigation-in-distribution-system-by-using-passive-filters/nyein-nyein-chan
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Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
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Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Electrical services in building
- 1. DIPLOMA ENGINEERING CIVIL ENGINREERING DEPARTMENT (06) SUBJECT:BUILDING SERVICES (3360604) SEMESTER:VI CH:2 ELECTRICAL SERVICES & LAYOUT MISS BHAVIKA H.PATEL
- 2. TOPICS INCLUDES, 1.Introduction 2.Terminology related to electric circuit & wiring 3.Direct current & alternating current 4.Conventional symbols 5.Types of wires and wiring system 6.Layout of house wiring 7.Estimation of wiring
- 3. SCHEMATIC DIAGRAM OF ELECTRICITY Hydroelectric power station Thermoelectric power station Electro thermonuclear power station Step up transformer National grid pylon Step down transformer Local grid Public and domestic lighting Transport(Rails) Industry & public services Radio communication
- 4. TERMINOLOGY RELATED TO ELECTRIC CIRCUIT: 1.Electric current: Electron charge moves one end to another end which known as electric current.it is denoted by ”I”. 2.Ampere: One coulomb charge pass in one second in conductors is called as ampere. It is denoted by “A” 3.Elecro motive force(EMF): Energy per unit electric charge that is imparted by an energy source, such as an electric generator or battery. 4.Potential difference: The difference of electrical potential between two points.
- 5. 5.Resistance: It is a measure of the opposition to current flow in electric circuit. 6.Conductor: It is an object or material that allows the flow of charge in one or more directions.(Copper, Aluminium) 7.Insulators: It is an object or material which dose not allows the flow of charge in one or more directions.(timber) 8.Semi conductors: It is a material which allows or not allows flow of charge (conductivity between conductors and insulators).(sillicon,gallium) 9.Power: The rate of workdone is known as power.
- 6. THANK YOU