景电工程大型电动机差动保护误动分析

Analysis on Maloperation of Large Motor Differential Protection in Jingdian Project

景泰川电力提灌工程(简称景电工程)是重大民生工程,景电泵站正常安全运转是保证灌溉效率的基本前提,同时也是发挥工程经济效益的关键。该文针对某景电工程的大型泵站电动机进行研究,对当前存在的差动保护误动现象进行分析,并针对电动机工作中的差动保护误动原理及原因提出相应的解决措施,旨在解决景电工程电动机出现的差动保护误动问题,保证景电工程能够持续发挥经济效益。

Jingtaichuan Electric Power Pumping Irrigation Project(Jingdian Project for short)is a major livelihood project.The normal and safe operation of Jingdian Pump Station is not only the basic premise to ensure irrigation efficiency,but also the key to give full play to the economic benefits of the project.This paper studies the motor of a large pump station in Jingdian project,analyzes the current differential protection maloperation,and puts forward corresponding solutions for the principle and causes of differential protection maloperation in motor work,in order to solve the differential protection maloperation problem of motor in Jingdian project and ensure that Jingdian project can continue to give full play to economic benefits.