城镇配电网断线运行分析  

Analysis of Disconnection Operation of Urban Distributi on Network

作　　者：刘中 Liu Zhong

机构地区：[1]襄阳诚智电力设计公司,襄阳441000

出　　处：《今日自动化》2020年第12期74-76,共3页Automation Today

摘　　要：文章针对配网中变压器的高、低压侧断线,低压网络中性线断线等问题,通过采用对称分量法,配合向量图进行了理论计算,分析了这些断线所造成的电网不平衡规律,最后简要分析了三相异步电动机在不平衡电压下的运行状况,为城镇运维人员判断配网系统断线提供了参考依据。Aiming at the high-and low-voltage side disconnection of transformers in the distribution network,and the disconnection of the neutral line of the low-voltage network,this paper uses the symmetrical component method to perform theoretical calculations in conjunction with the vector diagram,and analyzes the power grid failure caused by these disconnections.The law of balance,the article at the end gives a brief analysis of the operating conditions of a three-phase asynchronous motor under unbalanced voltage,which provides a reference for the urban operation and maintenance personnel to judge the disconnection of the distribution network system.

关 键 词：对称分量法 中性线断线 三相异步电动机 

分 类 号：TM75[电气工程—电力系统及自动化]