配电变压器非全相运行时各侧相量分析

Phasor Diagram Analysis on Both Sides of Distribution Transformer with Phase Failure Operation

针对10kV配电变压器的缺相运行,采用对称分量法对变压器高、低压侧断线分别进行了分析,得出各侧电压、电流的各序分量,较全面总结了配电变压器非全相故障运行特征。分析中概念清楚,简单易懂,对从事中压供电工作者认识缺相运行对配电变压器及用户设备的危害提供了参考,从而有助于工作人员在实际工作中对线路非全相运行进行判别和查找,有利于配网系统的安全运行。

This article describes phasor diagram analysis on two sides of 10 kV distribution transformer with phase failure operation by symmetrical component method,The changes of voltage,current, s positive ,negative components are summarized.Type of △/Y0-11 distribution power transformer is analyzed and fault characteristics are concluded thoroughly in the text, These conclusions are brief and easy to understand, and they are good reference to realize the harmfulness of opening phase in distribution powers systems,Also,the conclusions are helpful to identify and search the phase fault in distribution power system and useful to supply energy safely in distribution network.