基于方向比较原理的故障定位研究

Fault Location Study Based on Direction Comparison Principle

为了提高电网故障定位的速度,本文提出了基于方向比较原理构成方向信息矩阵的故障定位算法,综合了变电站中能够反映站内拓扑信息的方向信息矩阵。利用正常运行和故障发生时方向信息矩阵进行分析比较,对站内变压器、出线和母线等一次设备发生故障时分别判断。该算法所需信息量小,简单易行,流程简明,克服了传统后备保护在定值和时间上复杂配合的缺陷,可实现对站内故障元件的快速、准确定位,还具有较高的容错性和扩展性。

In order to improve the speed of power grid fault location,fault location algorithm is proposed directional comparison principle constitutes direction information matrix,a combination of substation topology information to reflect the station direction information matrix. Based on the normal operation and fault occurs direction information matrix analysis comparison,it can judge the device such as the station transformer,bus bar and line respectively when it is fault. The algorithm needs Small amount of information,is easy to process. The process is concise,overcome the traditional backup protection on the fixed value and the time complicated with defects,which can realize fault components inside the station of rapid,accurate positioning,but also has high fault tolerance and extensibility.