摘要
国内对三相高压计量箱的误差校准一般采用单相校验法,这种评定方法不符合实际运行工况,测定的误差并未考虑三相电流、电压回路在励磁状态下的相互影响。本文介绍了采用三相电流、电压法对三相高压计量箱的误差影响量进行测定。通过统计分析,得到了规律性的结论。探讨了对互感器组合误差的影响,提出了有针对性的建议和措施。对检测和控制三相高压计量箱误差相互影响,指导和改进产品设计,有一定的参考价值。
Up to now,the calibration of three-phase combined instrument transformer is called single-phase test method in the country.This assessment method does not meet the actual operating conditions.The error did not consider the interaction of three-phase current,voltage circuits in the excitation state.This article includes how to determine the added error of three-phase combined instrument transformer by three-phase current,voltage method,has got the regularity of conclusions through statistical analysis.It also has explored how the added error affects transformer combination error,puts forward proposals and measures.It has some reference value in determining and controlling three-phase combined instrument transformer added error,guiding and improving product design.
出处
《电测与仪表》
北大核心
2010年第12期41-45,60,共6页
Electrical Measurement & Instrumentation
关键词
三相高压计量箱
励磁
误差影响量
互感器组合误差
three-phase combined instrument transformer
excitation
added error
transformer combination error
