摘要
针对空载热备用线路电能表计量情况进行了分析,由于输电线路相地、相相之间存在分布电容,会形成容性充电电流,通过CT、PT及PT二次回路传递到电能表进行计量时相位发生了偏移,造成有功电能走字现象。
The situation of the watt-hour meter in the non-loaded standby power line is analyzed in this paper. When charging current, which is caused by the distributed capacitance between phase and ground or phase and phase in the power line, is transmitted to the watt-hour meter through the CT, PT and PT secondary loop, the phase shift is occurred in the measurement process, and the active power running phenomenon is happened.
出处
《电测与仪表》
北大核心
2006年第2期27-31,共5页
Electrical Measurement & Instrumentation
关键词
电容电流
电能表
互感器
相位
capacitance current
watt-hour meter
transformer
phase
