利用混杂系统理论进行电力系统建模的研究

描述了电力系统离散事件与连续动态相互作用的混杂行为，介绍了离散事件系统的模型工具Petri网与混杂系统的模型工具可编程赋时Petri网。提出了利用可编程赋时Petri网来建立混杂电力系统模型的方法。该方法将复杂的电力系统分成离散状态逻辑层和连续动态层来描述，由逻辑层进行协调各连续动态系统的模式切换。同时，文中给出了一个利用可编程赋时Petri网对具有有载调压变压器的简单电力系统的建模实例，并利用多Lyapunov函数方法进行了系统的逻辑切换稳定性分析。仿真结果表明了在有载调压变压器能够调节的范围内，系统的模式切换是稳定的，以此证实这种建模方法的有效性。

POWER SYSTEM MODELLING USING HYBRID SYSTEM THEORY

This paper describes the power system hybrid interactive behavior of continuous dynamic and the discrete event dynamic, and introduces programmable timed Petri Nets modeling tools of hybrid system. The paper proposes hybrid power system modeling method using programmable timed Petri Nets. The method divides complex power system into discrete state logic layer and continuous state layer. A high-level discrete events supervisory is used to coordinate the actions of the action of various subsystem. Meantime, the paper gives a modeling example of power system with OLTC, and analysis of power system logic switching stability using multiple Lyapunov functions. Simulation results denote that the model switching is stable and the proposed hybrid modeling method is feasible.