考虑相继故障影响的故障集快速搜索  

Quick Searching of Fault Sets by Considering of Successive Faults

作　　者：王力[1] 任建文[1] 王东升[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《现代电力》2013年第4期67-70,共4页Modern Electric Power

摘　　要：为了提高继电保护的在线校验速度,以保证在系统运行方式发生改变后保护定值能够迅速满足当前的运行状态,文章采用了故障集的思想来缩小需要进行保护校验的范围。校验时只需对故障集范围内的保护进行校验,而对故障集外的保护则不予考虑。随后提出了用母线等值阻抗变化率的方法来求解故障集的范围和校验的时序。最后通过对一个30节点的实例仿真,指出了发生相继故障时,给故障集范围确定带来的影响及校验时序因此发生的改变。通过利用故障集的方法,可以看出校验范围明显缩小,在线校验速度得到了显著的提升。In order to improve the speed of on-line relay set- ting check, the idea of fault set is used to narrow the range of relay setting check and to ensure the protection setting value quickly satisfying the current operation status when the system operation mode changes. During checking, only the relay protection equipment inside of the fault set need to be set and checked. Then, the method of variation rate of bus equivalent impedance is put forward to calculate the range of fault set and the check timing. In the end, through test on a 30-node system, it is pointed out that successive faults will influence the range of fault set and change check timing. It is also shown that checking region is obviously reduced, which improve online checking speed.

关 键 词：故障集 相继故障 在线校验 母线等值阻抗 校验时序 

分 类 号：TM771[电气工程—电力系统及自动化]