电网多重设备同时故障的案例及其影响分析  

Analysis on the Simultaneous Failures with Multiple Equipment and Their Influences

作　　者：方新春[1] 刘教民[1] 邝建荣[2] 王震洲[3] 

机构地区：[1]河北工业大学,天津300401 [2]中国南方电网超高压输电公司广州局,广州510663 [3]河北科技大学,石家庄050018

出　　处：《高压电器》2013年第9期7-12,共6页High Voltage Apparatus

基　　金：河北省自然科学基金资助项目(E2012208006);河北省教育厅高等学校科学研究计划自然科学重点项目(ZH2011243);河北省教育厅高等学校科学研究计划自然科学优秀青年基金项目(Y2012018)~~

摘　　要：近期电网发生了3起典型多重设备同时故障的事故,一起为非同塔500 kV线路同时发生接地短路故障,一起为线路及母线同时发生故障,另一起为不同变电站母线同时故障。根据设备接线、故障录波、现场检查结果对保护动作进行了分析。随着电网的发展,故障形式越来越复杂,事故表明,多重设备同时故障对常规保护原理和电网安全都带来了不良影响。对此,建议推进基于广域测量的保护系统研究和实践。There occurred simultaneously three failures with multiple equipment in recently, one accident was the ground fault which took place on two 500 kV lines at the same time, another was the fault which took place simultaneously on the line and the bus,the third one was the fault on buses in different substation at the simultaneous time. The protection action was analyzed based on equipment wiring, transient fault recorder and the inspection result of the scene of the accident. With the development of the power system,failure mode was more and more complicated. The accidents discussed show that the multiple equipment failures would affect the routine protection theory and grid security. To this problem, research and practice about the protection system based on wide area measurement should be put forward.

关 键 词：多重设备 同时故障 继电保护 电网安全 广域测量 

分 类 号：TM73[电气工程—电力系统及自动化]