从巴西电网“2·4”大停电事故看继电保护技术应用原则  

Analyzing Principle of Protection Through the Blackout in Brazil Power Grid on February 4,2011

作　　者：刘宇[1] 舒治淮[1] 程逍[1] 张胜祥[1] 

机构地区：[1]国家电力调度通信中心,北京市100031

出　　处：《电力系统自动化》2011年第8期12-15,71,共5页Automation of Electric Power Systems

摘　　要：简单介绍了2011年2月4日巴西东北部地区发生的大停电事故。事故由Luiz Gonzaga变电站内保护装置元件故障导致开关失灵保护误动引起。对照本次事故,分析了巴西电网采用的失灵保护逻辑方案的不足,并对中国电网的开关失灵保护标准化方案作了详细的分析。分析结果表明,中国电网开关失灵保护标准化方案能可靠避免该类型事故的发生。On February 4,2011,a blackout occurred in Northeast of Brazil.The process of blackout is introduced and analyzed.An error of an electronic component in the relay equipment aroused the false action of the breaker failure protection in the substation Luiz Gonzaga and resulted in the blackout finally.With reference to the blackout incident in Brazil,the deficiency of the breaker failure logic adopted in Brazil power grid is analyzed,and the standard breaker failure logic developed by State Grid Corporation of China is also analyzed.The analysis results reveal that the standard logic can avoid the occurring of similar incidents.

关 键 词：巴西电网 大停电 保护装置 安全稳定 开关失灵保护 

分 类 号：TM77[电气工程—电力系统及自动化]