基于对称分量法的高计用户TA变比在线准确测量原理与实现

Principle and Realization of Online Accurate Measuring for TA Ratio of HV Measuring Based on Symmetrical Component Method

文章介绍了一种基于对称分量法的用户高计TA变比间接测量原理与实现方法。通过测量用户低压侧三相电流相量,通过特定的算法处理,准确判定用户高计TA的实际变比是否与铭牌一致。该算法普遍适用于现有用户变压器的各种接线方式,且在诸多现场取得满意的测试结果。

The paper introduced a kind of principle and realization of online accurate measuring for TA ratio of HV measuring based on symmetrical component method. Through measuring three- phase current of low voltage at user side and handling by specific algorithm, TA ratio of HV measuring can be accurately judged whether is consistent with data plate. This algorithm applies to existing user transformer generally with various wiring connections, and gets satisfactory test result in many sites.