作　　者： (李涛）; (王刚）; (周谢）;

机构地区： 广西电网有限责任公司玉林供电局,广西玉林537000

出　　处： 《广西电力》 2017年第4期6-9,共4页

摘　　要： 近年来10 kV、35 kV并联电容器组断路器跳闸事件经常发生,但跳闸的具体原因难以查找,这给电网安全稳定运行带来了极大威胁。分析并联电容器组常见的4种保护接线方式,利用Simulink软件建立对应的仿真模型,并对各种模型进行理论推导。应用电压差动保护仿真模型对一起10 kV并联电容器组断路器跳闸事件进行分析,得出该事件跳闸原因是差动保护定值过小,该实例表明所建仿真模型可为电容器组故障分析与处理提供参考依据。 Circuit breaker tripping events of 10 kV, 35 kV shunt capacitor bank happen frequently in recent years and specific reasons of tripping are difficult to be found out, which brings greatly threaten to security stability operation of power grid. Four common protection connection modes of shunt capacitor bank are analyzed, corresponding simulation models are built by using Simulink software and theoretical deduction for each of them are carried out. A circuit breaker tripping event of 10 kV shunt capacitor bank is analyzed by applying the differential voltage protection simulation model. Reason of the tripping event is obtained which is the too small setting value of the differential protection. The practical case show that simulation models built can provide reference basis to analysis and treatment of capacitor bank fault.

关 键 词： 并联电容器组 仿真模型 故障分析