220kV随姚线导线断线故障过程及原因分析  

Course and Reason about 220 kV SuiYao Line Broken Wire Fault

作　　者：汪涛[1] 胡刚[1] 谭章英[1] 高亮[1] 王涛[1] 董永德[1] 艾福州 

机构地区：[1]湖北省电力试验研究院,湖北武汉430077 [2]宜昌供电公司输电部,湖北宜昌434000

出　　处：《湖北电力》2008年第1期4-5,共2页Hubei Electric Power

摘　　要：针对导线断股达到一定数量后,提出钢芯线通过电流发热温度计算方法,以及钢芯线上产生的温度是否超过钢材料弹性变形限值的判据。根据故障录波图电流参数分析计算,判断导线损伤截面超过原截面一定数量后,会造成三相电流不平衡,产生零序电流,启动故障录波器。According to the number of broken strands,the calculational method of steel core line＇s temperature due to transmitting current are put forward, and whether the criterion of temperature to exceed elastic deformation limit is also presented. On the basis of analysis and computing result via fault recorder＇s current parameter, the conclusions arrive. When injured line section reaching certain degree, it will cause current unbalance in three phases, create zero sequence current and start fault recorder.

关 键 词：导线 断股 钢芯线 

分 类 号：TM752[电气工程—电力系统及自动化]