摘要
真空开关在开断并联电容器组时可能产生重击穿过电压 ,对设备绝缘造成严重威胁。分析了RC装置原理及其参数的确定方法 ,提出使用RC装置和MOA复合方法来限制重击穿过电压 ;最后 ,应用电磁暂态计算程序对过电压过程和保护效果进行仿真。仿真结果表明 ,该方法能够将过电压限制在一定范围内 。
When vacuum switches switch off shunt capacitors, re striking over voltage may be brought about and threaten the insulation of the equipments severely. The principle of the RC device is analyzed. The method to determine the parameters is presented. The complex method to restrict re striking over voltage with RC device and MOA is put forward. Re striking over voltage and its precaution are simulated with Electromagnetic Transient Program (EMTP). The results show that this method can reduce the re striking over voltage.
出处
《电力情报》
2002年第3期50-52,共3页
Information on Electric Power
