所用变压器非全相运行空载电压的分析与仿真  

Analysis and Simulation of Non-load Voltage During Non-full Phase Operation of Auxiliary Transformer

作　　者：金世祥 JIN Shixiang

机构地区：[1]中国铁路上海局集团有限公司调度所

出　　处：《电气化铁道》2025年第1期45-49,共5页Electric Railway

摘　　要：配电变压器进线电源缺相故障频发,根据现场经验,在配电变压器发生缺相故障时,由于磁路长度不同,实际测得的低压侧空载电压常与故障理论值存在较大差距,影响事故原因的分析判断。本文通过对铁心磁路和电路的分析,计算缺相故障时的电压特征,总结得出计算通式,以便检修人员在实际工作中对所用变压器非全相运行进行判别。Lack of phase faults occur frequently in the incoming power supply of power distribution transformers.With reference of site experience,when lack of phase occurred in the power distribution transformer,the actual measured non-load voltage on the low-voltage side often differs significantly from the theoretical value of the fault due to different magnetic circuit lengths,it will affect the analysis and judgment of the cause of the accident.The paper analyzes the core magnetic circuit and circuit,calculates the voltage characteristics during lack of phase faults,and summarizes the calculation formula for maintenance personnel to distinguish non-full phase operation of transformers in practical work.

关 键 词：所用变压器铁心 磁路 缺相 故障特征 

分 类 号：U224.3[交通运输工程—道路与铁道工程]