Electric Power Systems.

Format:

Book

Author/Creator:

Weedy, B. M.

Contributor:

Cory, B. J.

Jenkins, N.

Ekanayake, Janaka B.

Strbac, Goran.

Weedy, B. M.

Strbac, G.

Language:

English

Subjects (All):

Electric power transmission.

Physical Description:

1 online resource (514 pages)

Edition:

5th ed.

Place of Publication:

Hoboken : John Wiley & Sons, Incorporated, 2012.

Summary:

The definitive textbook for Power Systems students, providing a grounding in essential power system theory while also focusing on practical power engineering applications. Electric Power Systems has been an essential book in power systems engineering for over thirty years. Bringing the content firmly up-to-date whilst still retaining the flavour of Weedy's extremely popular original, this Fifth Edition has been revised by experts Nick Jenkins, Janaka Ekanayake and Goran Strbac. This wide-ranging text still covers all of the fundamental power systems subjects but is now expanded to cover increasingly important topics like climate change and renewable power generation. Updated material includes an analysis of today's markets and an examination of the current economic state of power generation. The physical limits of power systems equipment - currently being tested by the huge demand for power - is explored, and greater attention is paid to power electronics, voltage source and power system components, amongst a host of other updates and revisions. Supplies an updated chapter on power system economics and management issues and extended coverage of power system components. Also expanded information on power electronics and voltage source, including VSC HVDC and FACTS. Updated to take into account the challenges posed by different world markets, and pays greater attention to up-to-date renewable power generation methods such as wind power. Includes modernized presentation and greater use of examples to appeal to today's students, also retains the end of chapter questions to assist with the learning process. Also shows students how to apply calculation techniques.

Contents:

Electric Power Systems

Contents

Preface to First Edition

Preface to Fourth Edition

Preface to Fifth Edition

Symbols

1 Introduction

1.1 History

1.2 Characteristics Influencing Generation and Transmission

1.3 Operation of Generators

1.4 Energy Conversion

1.4.1 Energy Conversion Using Steam

1.4.2 Energy Conversion Using Water

1.4.3 Gas Turbines

1.4.4 Nuclear Power

1.5 Renewable Energy Sources

1.5.1 Solar Energy-Thermal Conversion

1.5.2 Solar Energy-Photovoltaic Conversion

1.5.3 Wind Generators

1.5.4 Biofuels

1.5.5 Geothermal Energy

1.5.6 Other Renewable Resources

1.6 Energy Storage

1.6.1 Pumped Storage

1.6.2 Compressed-Air Storage

1.6.3 Secondary Batteries

1.6.4 Fuel Cells

1.6.5 Hydrogen Energy Systems

1.6.6 Superconducting Magnetic Energy Stores (SMES)

1.6.7 Flywheels

1.6.8 Supercapacitors

1.7 Environmental Aspects of Electrical Energy

1.7.1 Global Emissions from Fossil Fuelled Power Stations

1.7.2 Regional and Local Emissions from Fossil Fuelled Power Stations

1.7.3 Thermal Pollution from Power Stations

1.7.4 Electromagnetic Radiation from Overhead Lines, Cables and Equipment

1.7.5 Visual and Audible Noise Impacts

1.8 Transmission and Distribution Systems

1.8.1 Representation

1.8.2 Transmission

1.8.3 Distribution Systems

1.8.4 Typical Power Systems

1.9 Utilization

1.9.1 Loads

Problems

2 Basic Concepts

2.1 Three-Phase Systems

2.1.1 Analysis of Simple Three-Phase Circuits

2.2 Three-Phase Transformers

2.2.1 Autotransformers

2.3 Active and Reactive Power

2.4 The Per-Unit System

2.4.1 Resistance and Impedance

2.4.2 Three-Phase Circuits

2.4.3 Transformers

2.5 Power Transfer and Reactive Power

2.5.1 Calculation of Sending and Received Voltages in Terms of Power and Reactive Power.

2.6 Harmonics in Three-Phase Systems

2.7 Useful Network Theory

2.7.1 Four-Terminal Networks

2.7.2 Delta-Star Transformation

2.7.3 Star-Delta Transformation

3 Components of a Power System

3.1 Introduction

3.2 Synchronous Machines

3.2.1 Two-Axis Representation

3.2.2 Effect of Saturation on XS - the Short-Circuit Ratio

3.2.3 Turbogenerators

3.3 Equivalent Circuit Under Balanced Short-Circuit Conditions

3.4 Synchronous Generators in Parallel

3.5 The Operation of a Generator on an Infinite Busbar

3.5.1 The Performance Chart of a Synchronous Generator

3.6 Automatic Voltage Regulators (AVRs)

3.6.1 Automatic Voltage Regulators and Generator Characteristics

3.7 Lines, Cables and Transformers

3.7.1 Overhead Lines -Types and Parameters

3.7.2 Representation of Lines

3.7.3 Parameters of Underground Cables

3.8 Transformers

3.8.1 Phase Shifts in Three-Phase Transformers

3.8.2 Three-Winding Transformers

3.8.3 Autotransformers

3.8.4 Earthing (Grounding) Transformers

3.8.5 Harmonics

3.8.6 Tap-Changing Transformers

3.8.7 Typical Parameters for Transformers

3.9 Voltage Characteristics of Loads

3.9.1 Lighting

3.9.2 Heating

3.9.3 Synchronous Motors

3.9.4 Induction Motors

4 Control of Power and Frequency

4.1 Introduction

4.2 The Turbine Governor

4.3 Control Loops

4.4 Division of Load between Generators

4.5 The Power-Frequency Characteristic of an Interconnected System

4.6 System Connected by Lines of Relatively Small Capacity

4.6.1 Effect of Governor Characteristics

4.6.2 Frequency-Bias-Tie-Line Control

5 Control of Voltage and Reactive Power

5.1 Introduction

5.2 The Generation and Absorption of Reactive Power

5.2.1 Synchronous Generators

5.2.2 Overhead Lines and Transformers

5.2.3 Cables.

5.2.4 Loads

5.3 Relation between Voltage, Power, and Reactive Power at a Node

5.3.1 ∂Q=∂V and the Short-Circuit Current at a Node

5.4 Methods of Voltage Control: (a) Injection of Reactive Power

5.4.1 Shunt Capacitors and Reactors

5.4.2 Series Capacitors

5.4.3 Synchronous Compensators

5.4.4 Static VAr Compensators (SVCs) and STATCOMs

5.5 Methods of Voltage Control: (b) Tap-Changing Transformers

5.5.1 Use of Tap-Changing Transformers to Control Voltage in a Distribution System

5.5.2 Use of Tap-Changing Transformers to Despatch VArs in a Transmission System

5.6 Combined Use of Tap-Changing Transformers and Reactive-Power Injection

5.7 Phase-Shift Transformer

5.8 Voltage Collapse

5.9 Voltage Control in Distribution Networks

5.9.1 Uniformly Loaded Feeder from One End

5.10 Long Lines

5.10.1 Sub-Synchronous Resonance

5.11 General System Considerations

6 Load Flows

6.1 Introduction

6.2 Circuit Analysis Versus Load Flow Analysis

6.3 Gauss-Seidel Method

6.4 Load Flows in Radial and Simple Loop Networks

6.5 Load Flows in Large Systems

6.5.1 YBUS Matrix with Tap-Changing Transformers

6.5.2 The Newton-Raphson Method

6.5.3 Fast Decoupled Load Flow

6.6 Computer Simulations

7 Fault Analysis

7.1 Introduction

7.2 Calculation of Three-Phase Balanced Fault Currents

7.2.1 Current Limiting Reactors

7.3 Method of Symmetrical Components

7.4 Representation of Plant in the Phase-Sequence Networks

7.4.1 The Synchronous Machine (see Table 3.1)

7.4.2 Lines and Cables

7.4.3 Transformers

7.5 Types of Fault

7.5.1 Single-Line-To-Earth Fault

7.5.2 Line-To-Line Fault

7.5.3 Line-To-Line-To-Earth Fault

7.6 Fault Levels in a Typical System

7.6.1 Circuit Parameters with Faults

7.7 Power in Symmetrical Components.

7.8 Systematic Methods for Fault Analysis in Large Networks

7.8.1 Computer Simulations

7.9 Neutral Grounding

7.9.1 Introduction

7.9.2 Arcing Faults

7.10 Interference with Communication Circuits-Electromagnetic Compatibility (EMC)

8 System Stability

8.1 Introduction

8.2 Equation of Motion of a Rotating Machine

8.3 Steady-State Stability

8.4 Transient Stability

8.4.1 Reduction to Simple System

8.4.2 Effect of Automatic Voltage Regulators and Governors

8.5 Transient Stability-Consideration of Time

8.5.1 The Swing Curve

8.6 Transient Stability Calculations by Computer

8.7 Dynamic or Small-Signal Stability

8.7.1 Effects of Governor Action

8.8 Stability of Loads Leading to Voltage Collapse

8.9 Further Aspects

8.9.1 Faults on the Feeders to Induction Motors

8.9.2 Steady-State Instability Due to Voltage Regulators

8.9.3 Dynamic Stability

8.10 Multi-Machine Systems

8.11 Transient Energy Functions (TEF)

8.12 Improvement of System Stability

9 Direct-Current Transmission

9.1 Introduction

9.2 Current Source and Voltage Source Converters

9.3 Semiconductor Valves for High-Voltage Direct-Current Converters

9.3.1 Thyristors

9.3.2 Insulated Gate Bipolar Transistors

9.4 Current Source Converter h.v.d.c.

9.4.1 Rectification

9.4.2 Inversion

9.4.3 Complete Direct-Current Link

9.4.4 Control of h.v.d.c. Link

9.4.5 Transmission Systems

9.4.6 Harmonics

9.4.7 Variable Compensators

9.5 Voltage Source Converter h.v.d.c.

9.5.1 Voltage Source Converter

9.5.2 Control of VSC h.v.d.c.

10 Overvoltages and Insulation Requirements

10.1 Introduction

10.2 Generation of Overvoltages

10.2.1 Lightning Surges

10.2.2 Switching Surges-Interruption of Short Circuits and Switching Operations.

10.2.3 Switching Surges-Interruption of Capacitive Circuits

10.2.4 Current Chopping

10.2.5 Faults

10.2.6 Resonance

10.3 Protection Against Overvoltages

10.3.1 Modification of Transients

10.3.2 Surge Diverters

10.4 Insulation Coordination

10.5 Propagation of Surges

10.5.1 Termination in Inductance and Capacitance

10.6 Determination of System Voltages Produced by Travelling Surges

10.6.1 Bewley Lattice Diagram

10.6.2 Short-Line Faults

10.6.3 Effects of Line Loss

10.6.4 Digital Methods

10.6.5 Three-Phase Analysis

10.7 Electromagnetic Transient Program (EMTP)

10.7.1 Lumped Element Modelling

10.7.2 Switching

10.7.3 Travelling-Wave Approach

11 Substations and Protection

11.1 Introduction

11.2 Switchgear

11.2.1 The Bulk-Oil Circuit Breaker

11.2.2 The Air-Blast Circuit Breaker

11.2.3 Small- or Low-Oil-Volume Circuit Breakers

11.2.4 Sulphur Hexafluoride (SF6) Gas

11.2.5 Vacuum Interrupter

11.2.6 Summary of Circuit-Breaker Requirements

11.3 Qualities Required of Protection

11.3.1 Protective Zones and Back-Up Protection

11.4 Components of Protective Schemes

11.4.1 Current Transformers (CTs)

11.4.2 Voltage (or Potential) Transformers (VTs or PTs)

11.4.3 Relays

11.5 Protection Systems

11.5.1 Over-Current Protection Schemes

11.5.2 Directional Over-Current Protection Schemes

11.6 Distance Protection

11.7 Unit Protection Schemes

11.7.1 Differential Relaying

11.8 Generator Protection

11.9 Transformer Protection

11.10 Feeder Protection

11.10.1 Differential Pilot Wire

11.10.2 Carrier-Current Protection

11.10.3 Voice-Frequency Signalling

12 Fundamentals of the Economics of Operation and Planning of Electricity Systems

12.1 Economic Operation of Generation Systems.

12.2 Fundamental Principles of Generation System Planning.

Notes:

Description based on publisher supplied metadata and other sources.

Other Format:

Print version: Weedy, B. M. Electric Power Systems

ISBN:

9781118361085

OCLC:

789661703