电缆耐压试验中试验设备容量不足的解决方法Solution to Insufficient Capacity of Test Equipment in Cable Withstand Voltage Test
何寅,丁海华,郑城,何锋
HE Yin,DING Haihua,ZHENG Cheng,HE Feng
摘要(Abstract)：
电力电缆工频耐压试验中经常需要考虑试验电源和试验设备的容量问题,试品容量大会导致电流太大,可能会造成试验中跳闸或者试验设备损坏。试验需要的功率大部分都是无功功率,而且一般是容性无功,通过串并联一定数量的电抗器可以很好地补偿无功,减小试验功率,顺利完成试验任务。
Capacity of test power and instrument in power-frequency withstand voltage test is frequently considered. The excess capacity of the tested article may result in excess current, causing tripping or instrument damage during test. The power needed for test is always reactive power, generally the capacitive reactive power. Significant amount of paralleled reactors can compensate reactive power and reduce test power, and hence better complete the test.
关键词(KeyWords)：
电缆试验;串联谐振;并联补偿;励磁电流
cable test;series resonance;parallel compensation;excitation current
基金项目(Foundation):
作者(Author):
何寅,丁海华,郑城,何锋
HE Yin,DING Haihua,ZHENG Cheng,HE Feng
DOI: 10.19585/j.zjdl.2014.03.018