两起因高铁施工引发的500 kV线路事故保护动作行为分析  

Analysis on the 500 kV line protection action in two accidents caused by high-speed railway construction

作　　者：倪腊琴[1] 骆敬年[1] 

机构地区：[1]华东电网有限公司,上海200002

出　　处：《电力系统保护与控制》2010年第9期130-133,共4页Power System Protection and Control

摘　　要：针对两起因高铁施工引发的500 kV线路事故,根据故障录波从线路保护及重合闸的原理和动作逻辑出发,分析它们在实际事故过程中产生的不同动作行为。探讨这种类同的故障类型,相同的保护原理,仅由于保护厂家的不同,保护型号的不同或软件版本不同而导致的不同动作结果给电网运行带来的不利影响。提出了增加线路分相电流差动保护功能或采用智能重合闸等方法以从保护的原理上解决此类问题的方案。Aiming at two 500 kV line accidents caused by high-speed railway construction, this paper analyzes the action of line protection and auto-recloser from the principle and logic of protection and reclosure. It discusses that the similar types of faults with the same protection principle, only due to the different protection manufacturers, the different protection models, or even the different versions of software leading to different actions, may bring adverse effects to grid operation. It proposes the solutions of adding the line protection＇s function or introducing intelligent auto-recloser and so on.

关 键 词：开关保护 差动保护 重合闸 原理 逻辑 

分 类 号：TM773[电气工程—电力系统及自动化]