直流滤波器差动保护误动作分析  

Analysis on Misoperation of DC Filter Differential Protection

作　　者：田庆 

机构地区：[1]南方电网超高压输电公司检修试验中心,广州510663

出　　处：《高压电器》2012年第9期22-26,共5页High Voltage Apparatus

摘　　要：笔者分析了宝安换流站差动保护误动作的情况。根据现场实际录波,考虑直流滤波器TA特性,讨论直流滤波器差动保护的特点、直流输电的特殊运行工况对直流滤波器差动保护的影响,并结合其特点提出相应3种反措,以提高差动保护的可靠性。这可以完善直流滤波器差动保护,从而增强高压直流安全稳定运行性能。This paper analyses the misoperation of DC filter differential current protection in Bao＇an converter station according to the transient fault record. The characteristics of a DC filter and the influence of special working situations to the DC filter protection are analyzed, such as the TA characteristic etc.. Three possible methods are put forward to enhance reliability of differential protection. When these methods are utilized in DC filter protection system, the HVDC can operate better.

关 键 词：直流滤波器 比率差动保护 误动作 

分 类 号：TM77[电气工程—电力系统及自动化] TN713[电子电信—电路与系统]