一种基于改进Petri网拓扑的PMU配置优化方法

本文提出一种基于改进Petri网的PMU配置优化算法,先在关联节点可测的基础上,引入关联节点安装PMU优选约束,建立网络覆盖优化函数.然后采用改进的Petri网对系统的结构进行分析,并结合节点关联信息,得到PMU最少时网络的最大覆盖.该方法将复杂网络拓扑分解为若干基本分析单元,从而缩小了分析规模;通过引入标识算子,将复杂矩阵运算转化为逻辑运算,简化推理过程;同时,通过更新变迁点火序列进行PMU地点选择,并引入变迁时间标签使计算过程得以简化,提高了计算效率.最后通过算例仿真,验证本文所提的方法计算准确,过程简便.

An optimization algorithm based on Petri net topology for PMU placement in power system

A new optimization algorithm for PMU placement is introduced in this article. The net-cover function is built based on rules that associated nodes are observable with the choice of PMU location is considered. Then referring to the information of connection nodes, the whoie power network is analyzed with improved Petri Net. And the optimized network cover is achieved. The complex power network is divided into several parts, the change enable array is renewed, and the marking operator is used. The analysis scale is reduced and the inference process is simplified. Finally, from the testing results of methods with the actual data of the real power network, the method proposed is relatively accurate and the processes of calculations are feasible and convenient.