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Reliability and sensitivity analysis of loop-designed security and stability control system in interconnected power systems

2022-11-15

【论文推荐】合肥工业大学李生虎等：互联电力系统中环网架构的安全稳定控制系统可靠性灵敏度分析

原创英文期刊编辑部全球能源互联网期刊 2022-11-15 05:00

摘要

安全稳定控制系统(SSCS)是在不同层级的控制站之间收集信息并发送指令的系统，且SSCS的树状结构层级更多。一个站点或通信通道的故障将导致下级所连的所有执行站(EXs)失去控制，且EXs可控容量的随机性增加了SSCS可靠性评估的难度。本文对环状架构的SSCS和互联系统的可靠性进行了研究，并提出了基于证据理论的可控容量不确定性分析方法。引入双向和环状通信通道设计，减少了现有树状SSCS的层级和站点数目。通过可靠性评估和灵敏度分析，量化了不同结构下SSCS的可靠性并确定薄弱元件。针对EXs可控容量的随机性，提出了基于证据理论的SSCS可控容量不确定性分析，以量化SSCS平衡电网有功功率缺额的概率。

Reliability and sensitivity analysis to loop-designed security and stability control system in interconnected power systems

互联电力系统中环网架构的安全稳定控制系统可靠性灵敏度分析

Shenghu Li¹, Huimin Zhou¹, Yunsong Yan², Wei Han³, Jianfeng Ren²

(1.School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, P. R. China 2.NARI Group (State Grid Electric Power Research Institute) Co., Ltd., Nanjing 211106, P. R. China 3. State Grid Henan Electric Power Company Research Institute, Zhengzhou 450052, P. R. China)

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Reliability and sensitivity analysis of loop-designed secur

Abstract

Security and stability control system (SSCS) in power systems involves collecting information and sending the decision from/to control stations at different layers; the tree structure of the SSCS requires more levels. Failure of a station or channel can cause all the execution stations (EXs) to be out of control. The randomness of the controllable capacity of the EXs increases the difficulty of the reliability evaluation of the SSCS. In this study, the loop designed SSCS and reliability analysis are examined for the interconnected systems. The uncertainty analysis of the controllable capacity based on the evidence theory for the SSCS is proposed. The bidirectional and loop channels are introduced to reduce the layers and stations of the existing SSCS with tree configuration. The reliability evaluation and sensitivity analysis are proposed to quantify the controllability and vulnerable components for the SSCS in different configurations. By aiming at the randomness of the controllable capacity of the EXs, the uncertainty analysis of the controllable capacity of the SSCS based on the evidence theory is proposed to quantify the probability of the SSCS for balancing the active power deficiency of the grid.

Keywords

Security and stability control system (SSCS), Loop design, Controllability, Vulnerability, Interconnected power systems, Evidence theory, Uncertainty controllable capacity.

Fig.1 SSSCS with tree structure

Fig.2 SSCS with partial flat design

Fig.3 SSCS with loop design

Fig.4 Interconnection of the power systems

Fig.5 Loop SSCS for interconnected systems

Fig.6 Loop SSCS of interconnected system with standby

Fig.7 SSCS with stations renumbered

Fig.8 Flowchart of the proposed algorithm

Fig.9 Cj in different structures

Fig.10 CSSCS in different structures

Fig.11 Sensitivity of CSSCS to ak station

Fig.12 Cj in different structures with backup

Fig.13 Sensitivity of CSSCS to ak cable

Fig.14 Controllable capacity of the SSCS

本文引文信息

Li SH, Zhou HM, Yan YS, et al. (2022) Reliability and sensitivity analysis of loop-designed security and stability control system in interconnected power systems. Global Energy Interconnection, 5(5): 501-511

李生虎，周慧敏，颜云松等 (2022) 互联电力系统中环网架构的安全稳定控制系统可靠性灵敏度分析 . 全球能源互联网（英文）, 5(5): 501-511

Biographies

Shenghu Li

Shenghu Li received his B.Sc., M.Sc., and Ph.D. at Hefei University of Technology, Hefei, China, in 1995, 2000, and 2003 respectively. He is a professor with Hefei University of Technology, Hefei, China, since 2008. His research interests include wind power system analysis and control, UHVDC/ FACTS transmission, power system planning, and reliability.

Huimin Zhou

Huimin Zhou received her B.Sc. at Anhui University, Hefei, China, in 2020. She is pursuing an M.Sc. at Hefei University of Technology, Hefei, China. Her research interests include reliability analysis of UHVDC and SSCS.

Yunsong Yan

Yunsong Yan received his B. Sc. and M.Sc. at Nanjing University of Science and Technology, Nanjing, China, in 2003 and 2005, respectively. Currently, he is a senior engineer with NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing, China. His research interests include power system stability control and analysis.

Wei Han

Wei Han is a senior engineer (professor level) with Electric Power Research Institute of State Grid Henan Electric Power Company, Zhengzhou, China. His research interests include power system relay protection and stability.

Jianfeng Ren

Jianfeng Ren received his B.Sc. from Nanjing University of Science and Technology, Nanjing, China, in 2003, and an M.Sc. from Nanjing Automation Research Institute, Nanjing, China, in 2006. Currently, he is a senior engineer with NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing, China. His research interests include power system stability, control, and analysis.

编辑：王彦博

审核：王伟

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Reliability and sensitivity analysis of loop-designed security and stability control system in interconnected power systems

【论文推荐】合肥工业大学 李生虎等：互联电力系统中环网架构的安全稳定控制系统可靠性灵敏度分析

郑重声明

【论文推荐】合肥工业大学李生虎等：互联电力系统中环网架构的安全稳定控制系统可靠性灵敏度分析