基于广域同步测量系统的预防连锁跳闸控制策略详解.PDFVIP

第 27 卷 第 19 期 中 国 电 机 工 程 学 报 Vol.27 No.19 Jul. 2007 2007 年 7 月 Proceedings of the CSEE ©2007 Chin.Soc.for Elec.Eng. 0258-8013 (2007) 19-0032-07 TM762 A 470 40 文章编号： 中图分类号： 文献标识码： 学科分类号： ⋅ 基于广域同步测量系统的预防连锁跳闸控制策略 徐慧明，毕天姝，黄少锋，杨奇逊，马 瑞 (华北电力大学电力系统保护与动态安全监控教育部重点实验室，北京市 昌平区 102206) Study on Wide Area Measurement System Based Control Strategy to Prevent Cascading Trips XU Hui-ming, BI Tian-shu, HUANG Shao-feng, YANG Qi-xun, MA Rui (Key Laboratory of Power System Protection Dynamic Security Monitoring and Control, Ministry of Education, North China Electric Power University, Changping District, Beijing 102206, China) ABSTRACT: Cascading trips caused by flow transferring are 关键词：潮流转移；连锁跳闸；控制策略；切负荷；切机； the crucial reason of a lot of well-known blackouts. It threatens 广域同步测量系统；电力系统 the security and reliability of power systems severely. A wide 0 引言 area measurement system (WAMS) based control strategy to prevent cascading trips caused by flow transferring is presented. 大停电一直是威胁电力系统安全运行的重大 By analysis of the relationship of node injection current and 隐患，它所带来的社会、经济影响愈来愈难以估 branch current of network, the principle of control nodes 量[1-5] 。近20 多年来世界各国频繁发生的大停电事 selection of load shedding and generator tripping and the 件调查表明：大停电事故往往引发于在电力系统重 calculation method of control quantity are proposed. The 负荷运行并发生故障的情形下，故障线路切除引起 corresponding of the control strategy is also given. The 潮流在电网内的转移，潮流转移将进一步加重系统 calculation method of branch current before the control action 中其他传输线路的负载并引起连锁跳闸情况的发