摘要
主要阐述了石油化工企业变电所进线的定时限过电流保护和下级变压器反时限过电流保护之间配合存在的问题,通过对定时限过电流保护整定计算优化后,使反时限与定时限过电流保护做到合理配合。
The paper discusses the problem about the coordination between the definite time overcurrent protection and lower inverse time overcurent protection of petroleum industry substation′s incoming lines.By setting calculation optimization to the definite current protection later,the rational coordination of the inverse time and difinite time overcurrent is been done.
出处
《电气开关》
2010年第5期65-66,69,共3页
Electric Switchgear
关键词
定时限
反时限
过电流
配合
difinite time
inverse time
overcurrent
coordination
