基于对称分量法的YN,d11接线变压器YN侧两相短路故障分析

Analysis of Two-phase Short-circuit Fault on YN Side of YN,d11 Connection Transformer Based on Symmetrical Component Method

利用两侧电压、电流采样进行分析是变压器故障调查的主要手段。文章从基础的序分量及向量入手,推导得出YN,d11接线变压器YN侧两相短路时电压、电流间的关系,提高事故调查的准确度和效率。

Using the voltage and current sampling on both sides to analyze is the main method of transformer fault investigation.This article starts with the basic sequence components and vectors,and derives the relationship between the voltage and current when the two-phase short circuit on the YN side of the YN,d11 connection transformer is short-circuited.It can improve the accuracy and effi ciency of accident investigation.