摘要
介绍了变压器短路试验的基本情况和标准对短路试验相电流测量的规定要求。针对目前三角形联结绕组的变压器相电流无法直接测量的问题,提出了一种等效线路测量方法。通过公式推导和理论计算,搭建电路图,实现动态系统建模、仿真和分析,并对此测量方法进行了应用验证。所提测量方法符合标准要求,且提高了检验效率和测量精度,保证了检测的公正性和故障定位的有效性,具有一定的推广和借鉴意义。
This paper introduced the basic conditions of transformer short-circuit test and the requirements of standard for phase current measurement of short-circuit test.In view of the problem that the transformer phase current in triangle junction winding can not be measured directly without external lead terminal,ameasurement method of equivalent circuit was proposed,which,through formula derivation and theoretical calculation,constructs the circuit diagram,realizes the dynamic system modeling,the simulation and the analysis,and carries on the application verification to this measuring method.This measurement method meets the standard requirements,and improves the test efficiency and measurement accuracy,and ensures the fairness and effectiveness of the detection of the fault location,it has certain promotional and reference significance.
作者
何东升
许呈盛
刘光祺
罗海凹
丁晓军
HE Dongsheng;XU Chengsheng;LIU Guangqi;LUO Haiao;DING Xiaojun(China National Quality Supervision and Testing Center for Smart Grid Transmission and Distribution Equipment,Dongguan 523325,China;Guangdong University of Technology,Guangzhou 510006,China;Electric Power Research Institute,Yunnan Power Grid Co.,Ltd.,Yunnan 650217,China)
出处
《电器与能效管理技术》
2018年第14期42-45,50,共5页
Electrical & Energy Management Technology
基金
国家质量监督检验检疫总局科技计划项目(2016QK026)
关键词
变压器
短路试验
相电流测量
测量方法
transformer
short-circuit test
phase current measurement
measurement method
