Название: Risk-Based Planning and Operation Strategy Towards Short Circuit Resilient Power Systems
Автор: Chengjin Ye, Chao Guo, Yi Ding
Издательство: Springer
Год: 2023
Страниц: 189
Язык: английский
Формат: pdf (true), epub
Размер: 41.6 MB

This book focuses on the comprehensive prevention and control methods for short-circuit faults in power systems. Based on the quantification method of power system short-circuit fault risk considering extreme meteorological disasters, this book carries out theoretical research on optimal control of power system short-circuit faults at the planning and operation levels. The establishment of a comprehensive index system for short-circuit safety level of large power grids from several sides and the realization of a panoramic display of consequences of short-circuit faults in power grids are one of the features of this book, which are especially suitable for readers interested in learning about short-circuit fault solutions in power systems. This book can benefit researchers, engineers, and graduate students in the fields of electrical engineering, power electronics, and energy engineering.

It is well known that excessive short-circuit current is one of the prominent problems of large grid operation. Short circuits are the most common type of fault in power systems and can be caused by insulation aging, lightning flashover, and bird and animal cross-connection. In recent years, various extreme weather events, including heavy rainfall, hurricanes, thunderstorms, and floods, are striking the world in an increasingly frequent and destructive manner. Extreme weather hazards can exacerbate the probability and serious consequences of short-circuit faults in power systems, which is bound to bring great challenges to the safe and stable operation of power systems. For example, the major blackout that occurred in Brazil on November 10, 2009 was mainly caused by a thunderstorm that triggered short-circuit faults in several lines of the power system one after another, resulting in a voltage collapse in the southeastern grid of Brazil, especially in the Sao Paulo area. The high-voltage DC transmission system of the Itaipu hydroelectric plant was bipolar blocked due to the activation of the minimum DC voltage protection on the inverter side. At the same time, the national interconnection system of Brazil was disconnected from Paraguay’s 50 Hz AC grid.

However, with the development of 5G technology, centralized control of the fault limiter becomes possible, which is the focus of this chapter. Particularly, the fault current limiters (FCLs), one of the most appealing methods to handle short-circuit faults (SCFs), ensure that the SCC is switched off by CBs to prevent cascade failures. In particular, an FCL has a low impedance when it is not active but changes to a very large impedance when it is. Additionally, the stability of post-fault power systems can be increased and voltage sags can be mitigated by appropriately switching FCLs. The mainstream FCLs include superconductors, solid-state, hybrid types, and so on. Compared with other protective devices, the prices of FCL are relatively high. To create both efficient and cost-effective schemes, the candidate allocation positions of FCLs are thoroughly researched.

Contents:
1. Risk Evaluation of Short-Circuit Fault in Power System
2. Risk-Based Optimal Configuration of Fault Current Limiter in Power System
3. 5G-Based Optimal Configuration of Centralized Fault Current Limiter in Power System
4. A Multi-state Model for Power System Resilience Enhancement Against Short-Circuit Faults
5. Voltage Violations Assessment Considering Reactive Power Compensation Provided by Smart Inverters
6. A Distributed MPC to Exploit Reactive Power V2G for Real-time Voltage Regulation of Post-fault Power Systems
7. A Stochastic Unit Commitment to Enhance Frequency Security of Post-fault Power Systems
8. A Data-Driven Reserve Allocation Method with Frequency Security Constraint of Post-fault Power System Considering Inverter Air Conditioners
9. Iterative Online Fault Identification Scheme for High Voltage Circuit Breaker




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