电力系统网络拓扑分析的有色Petri网模型

COLOURED PETRI-NET MODELS FOR TOPOLOGY ANALYSIS OF POWER NETWORKS

考虑了电力系统网络拓扑分析问题 ,研究了实时拓扑分析的动态特性 ,并提出了改进的拓扑分析算法。把整个电网拓扑分析问题分解为若干个基本分析单元 ,提出了基本分析单元的有色 Petri网模型 ,用令牌表示母线 ,用令牌的颜色表示连接在同一母线上的结点。基于基本分析单元有色Petri网的电网拓扑分析 ,当某个开关改变状态时 ,只重新计算包含该开关两端结点的母线。基本分析单元的有色 Petri网描述了开关状态变化引起网络拓扑变化这一离散事件动态过程。分析表明 ,基于基本分析单元有色 Petri网的拓扑分析算法比传统方法效率高得多。

This paper deals with power network topology analysis, makes a study on the dynamic properties of the real time analysis process, and explores improved analysis algorithms. The topology analysis is decomposed into many units, each of which is modeled with a coloured Petri net, where a token represents a bus, and the token color represents the nodes connected to the bus. In the topology analysis based on these coloured Petri nets, whenever a certain breaker changes its state only the buses containing the breaker's end node(s) are recomputed. The coloured Petri nets explicitly model the discrete event dynamic process of the network topology varying with the states of breakers. And the proposed topology analysis algorithm is much more effective than the traditional method.