特高压断路器的瞬态恢复电压研究  

A Study on Transient Recovery Voltage of UHV Circuit Breakers

作　　者：林集明[1] 顾霓鸿[1] 王晓刚[1] 班连庚[1] 王承玉[1] 项祖涛[1] 孙岗[2] 郑彬[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100085 [2]国家电网公司,北京市西城区100031

出　　处：《电网技术》2007年第1期1-5,共5页Power System Technology

摘　　要：结合晋东南—南阳—荆门1000kV特高压试验示范工程,研究了交流1100kV断路器瞬态问题中的断路器开断短路电流或失步解列后的瞬态恢复电压(transient recovery voltage,TRV)内容。在此基础上提出了我国交流1100kV特高压断路器的工作条件建议,分析了特高压断路器TRV问题的前景。认为我国特高压电网断路器在不采用分闸电阻的条件下。可满足IEC断路器扩展标准和正在修订的我国电力行业断路器标准中对TRV的要求。The authors investigate the transient requirements of 1100kV AC circuit breakers mainly for China＇s Jin-Nan-Jing UHV pilot project. This research item includes two parts： （A） The transient recovery voltages （TRV） after circuit breakers interrupt the short-circuit currents or the current in out of phase condition. （B） The time constant of DC component of short-circuit currents and zero offset of current. Based on these results, the suggestion on transient requirements of 1100kV AC circuit breakers is presented. As the first part of the research item, this paper focuses on the transient recovery voltages of the UHV circuit breakers after the short circuit current is broken or the gird is sectionalized due to fall-out of synchronism. According to the results in the UHV pilot project, it is anticipated that without using opening resistor, the TRV peak values and the rise rates of circuit breaker in the UHV power system fall within the allowed ranges prescribed in either the IEC circuit breaker standard extension or Chinese test condition for 1100 kV circuit breakers.

关 键 词：特高压 断路器 瞬态恢复电压 电压上升率 

分 类 号：TM561[电气工程—电器] TM723