用图论优化复杂环网继电保护整定配合的简便算法

本文针对电力系统复杂环网继电保护整定配合中所遇到的困难,应用图论拓扑分析和方向保护整定计算的基本原理,提出了一种简便有效的求取环网断口以及求取相关顺序矩阵和“主/后备”保护对的算法。该法计算工作量较小,占用内存少;并明确给出最少断口数的算式。

Application of Graph Theory in Optimal Coordination of Relay Protecting System in Multiloop Transmission Line

It is a complicated job to give a setting sequence to ensure an optimal coordination in the directional overcurrent and distance relay protection in a multiloop network. For this purpose, a new algorithm based on the linear graph theory, topology analysis and the fundamental principle for the setting of transmission line directional protecting system is developed. The method proposed is capable of selecting the optimal break points, solving the related sequential matrix and determining the sequential primary/backup relay pairs. The results concerning the application of the algorithm in many experimental systems show that the method is very simple and useful.