曲靖电网冰雪灾害期间继电保护动作统计与分析  

Statistic and Analysis on Relay Protection of Qujing Power System during the Ice Disaster

作　　者：孙建华[1] 李晓彤[1] 姚捷[1] 黄文载[1] 徐飞[1] 阳家书[1] 

机构地区：[1]云南电网公司曲靖供电局,云南曲靖655000

出　　处：《南方电网技术》2008年第6期84-87,共4页Southern Power System Technology

摘　　要：回顾冰雪灾害期间曲靖电网110kV及以上线路发生的故障,其中单相故障次数占总故障次数的比例高达86%。归纳出各种保护的动作情况,其中220kV及500kV线路故障时,高频纵联、光纤差动保护动作次数最多。提出利用故障信息进行继电保护延伸分析的建议。强调重视快速保护的投入率和整定计算的方式选择,用好接地距离保护和慎用辅助保护功能,以便更有效地抵御冰灾。The 110 kV and above voltage line faults occurred in Qujing Power System during the ice disaster in 2008 are retrospect, showing that the single-phase breakdown is over 86% to the total. Various relay actions in the period are summed up, showing that the action times of high-frequency longitudinal differential protection and fiber differential protection are the highest in the 220 kV and 500 kV line faults. It is suggested to use the fault information to do extended analysis to the relay protection： In order to stand against ice disasters, it is emphasized to pay more attention to choosing the fast protection input rate and mode of setting calculation selection, to use correctly the grounding distance protection, and to use prudently the auxiliary protection.

关 键 词：冰雪灾害 电网 继电保护 

分 类 号：TM712[电气工程—电力系统及自动化]