Voltage Stability Analysis of Power System (Power Systems)

✍ Scribed by Yong Tang

• Publisher: Springer
• Year: 2021
• Tongue: English
• Leaves: 394
• Category: Library

✦ Synopsis

This book describes comprehensively theories and methods of the power system voltage stability. It first introduces the basic theory of the power system and the basic concept and classification of the power system stability and discusses the basic concepts of voltage stability, including the mechanism of voltage stability, and influencing factors of transient and medium-term and long-term voltage stability. This book also describes the elemental characteristics and models of important power system in voltage stability analysis and discusses the theories and methods of analysis on steady, transient and medium-term and long-term voltage stability analysis, respectively. Then, this book introduces the measures to improve the voltage stability. Finally, two examples of voltage stability analysis in engineering applications are introduced.
This book is useful as a reference for engineers and technicians who are engaged in dispatching operation, planning,design and scientific research of the power system, and teachers and students of electrical engineering major in colleges and universities.

✦ Table of Contents

Preface
Brief Introduction
Cataloguing in Publication (CIP) Data
Contents
1 Introduction
1.1 Development of the Power System
1.2 Operation and Control
1.2.1 Electric System Operation
1.2.2 Power System Security and Stability Control
1.3 Definition and Classification of the Power System Stability
1.3.1 Overview
1.3.2 Definition and Classification of Electric Power System Stability in China
1.3.3 Definition and Classification of Power System Stability in IEEE/CIGRE
1.3.4 Comparative Analysis of Definitions and Classifications at Home and Abroad
1.3.5 Definition and Classification of Power System Stability
References
2 Introduction to Voltage Stability
2.1 History and Current Situation of Voltage Stability Research
2.2 Voltage Instability Accident and Its Characteristics
2.2.1 Overview of Typical Voltage Collapse Accidents
2.2.2 Characteristics of Voltage Instability
2.3 Mechanism of Voltage Stability
2.3.1 Voltage Stability of Simple Pure Resistor Element Circuits
2.3.2 Mathematical Description of Voltage Stability of Simple Pure Resistor Element Circuits
2.3.3 Voltage Stability of AC Circuits
2.4 Factors Affecting Voltage Stability
2.4.1 Transient Voltage Stability
2.4.2 Medium and Long-Term Voltage Stability
References
3 Characteristics and Models of Power System Elements
3.1 Synchronous Generator and Its Control System
3.1.1 Synchronous Generator
3.1.2 Excitation Control System of Synchronous Generators
3.1.3 Power System Stabilizer
3.1.4 Prime Mover Governor
3.2 Load
3.2.1 Composition of Load
3.2.2 Static Load Characteristics
3.2.3 Dynamic Characteristics of Loads
3.2.4 Mathematical Description of the Load
3.3 Reactive Compensation Element
3.3.1 Series Capacitor
3.3.2 Shunt Capacitor and Shunt Reactor
3.3.3 Static Var Compensator
3.3.4 Static Compensator
3.3.5 Thyristor Controlled Series Capacitor
3.3.6 Static Synchronous Series Compensator
3.3.7 Unified Power Flow Controller
3.3.8 Controllable Shunt Reactor
3.3.9 Synchronous Condenser
3.4 OLTC
3.4.1 Characteristics of OLTC
3.4.2 Model of OLTC
3.5 HVDC Transmission System
3.5.1 Reactive Power Characteristics of Converter
3.5.2 Reactive Power Compensation Characteristics of Converter Stations
3.5.3 Characteristics of Fault DC System
3.5.4 Model of DC Transmission System
3.6 Power System of Power Plant
3.6.1 Power System Model of Thermal Power Plant
3.6.2 Dynamic Model of Hydropower Plant
3.6.3 Dynamic Model of Pressurized Water Reactor Nuclear Power Plant
3.7 Auto Generation Control
3.7.1 AGC Control Mode
3.7.2 AGC Model
References
4 Static Analysis of Voltage Stability
4.1 Basic Principle of Static Analysis of Voltage Stability
4.2 Research on Transmission Capability of Power Systems
4.2.1 PV Curve
4.2.2 VQ Curve
4.2.3 Solution of the Curve—Continued Power Flow [4–6]
4.3 Static Analysis Method for Voltage Stability
4.3.1 Nonlinear Programming Method
4.3.2 Singular Value Decomposition Method
4.3.3 Eigenvalue Analysis
4.3.4 Sensitivity Analysis
4.3.5 Bifurcation Analysis
4.4 Static Analysis Index for Voltage Stability
4.4.1 Sensitivity Index
4.4.2 Singular Value/Eigenvalue Index
4.4.3 Index Based on the Power Flow Solution
4.4.4 Local Index
4.4.5 Impedance Modulus Index
4.4.6 Energy Function Index
4.4.7 Second-Order Index
4.5 Engineering Application
4.5.1 Engineering Indexes in China
4.5.2 Engineering Indexes of Other Countries
References
5 Transient (Short-Term) Voltage Stability
5.1 Analysis Method of Transient Voltage Stability
5.1.1 Time-Domain Simulation Method
5.1.2 Energy Function Method
5.1.3 Nonlinear Dynamic Method
5.2 Criterion for Transient Voltage Stability
5.2.1 Engineering Experience Criteria
5.2.2 Theoretical Criteria
5.3 Distinguishment Between Voltage Stability and Rotor Angle Stability
5.3.1 Engineering Empirical Approach
5.3.2 Small Disturbance Analysis Method
5.3.3 Bifurcation Analysis
5.3.4 Energy Function Method
5.3.5 Thevenin Equivalent Parameter Tracking Algorithm
5.3.6 Combination of Singularity Induced Bifurcation (SIB) Theory and Energy Function Method
References
6 Medium and Long-Term Voltage Stability
6.1 Multi-time Scale Full Dynamic Simulation of Power System
6.1.1 Study Range
6.1.2 Simulation Model
6.1.3 Simulation Method
6.2 Relationship Between Medium and Long-Term Voltage Stability and Static and Transient Voltage Stability
6.2.1 Relationship Between Medium and Long-Term Voltage Stability and Static Voltage Stability
6.2.2 Relationship Between Medium and Long-Term Voltage Stability and Transient Voltage Stability
6.3 Analysis of Medium and Long-Term Voltage Stability Scenarios
6.3.1 Overexcitation Limit of Generators
6.3.2 On-Load Voltage Regulating Transformer
6.3.3 Constant Temperature Load
6.3.4 Continuous Increase of the Load
6.4 Example of Medium and Long-Term Voltage Stability Analysis
References
7 Technical Measures to Improve Voltage Stability
7.1 Classification of Measures for Improving Voltage Stability
7.2 Generator Control
7.2.1 Reactive Power Reserve Capacity of Generator
7.2.2 HV Side Voltage Control of Generator
7.2.3 Generator Output Control
7.3 Reactive Power Compensation for Transmission Systems
7.4 Load Control
7.4.1 Current Situation Analysis of Under-Voltage Load Shedding [7]
7.4.2 Configuration Method of Under-Voltage Load Shedding Measures
7.5 HVDC Regulation
7.6 Multi-level Voltage Control
References
8 Examples of Voltage Stability Analysis
8.1 Case I: Power Grid Voltage Stability Analysis and Research of Fujian
8.1.1 Main Contents of the Research
8.1.2 Research Conditions and Calculation Principles
8.1.3 Computational Tool and Method
8.1.4 Analysis of Voltage and Existing Reactive Condition for Fujian Power Grid
8.1.5 Reactive Power Balance Analysis of Fujian Power Grid
8.1.6 Research on Static Voltage Stability of Fujian Power Grid in Peak Load Mode in 2005
8.1.7 Research on Transient Voltage Stability in Fault Disturbance Mode
8.1.8 Full Dynamic Simulation
8.1.9 Comprehensive Measures to Improve Voltage Stability of Fujian Power Grid
8.1.10 Conclusion
8.2 Example II: Study and Comprehensive Evaluation on Voltage Stability of Chongqing Power Grid
8.2.1 Conditions and Principles
8.2.2 Analysis on Voltage and Reactive Power Balance of Chongqing Power Grid in Basic Operation Mode in 2008
8.2.3 Research on Static Voltage Stability of Chongqing Power Grid
8.2.4 Study on Transient Voltage Stability of Chongqing Power Grid in Basic Operation Mode in 2008
8.2.5 Simulation Study on Medium and Long-Term Voltage Stability of Chongqing Power Grid
8.2.6 Conclusions and Recommendations
References