基于petri网和粒子群算法的微电网优化运行

Optimal Operation of Microgrid Based on Petri Net and PSO

微电网是未来电网发展的主要方向之一。为了实现微电网的经济运行,对由多微源组成的孤立型微电网进行研究,提出了一种基于petri网和粒子群算法的微电网优化运行策略。首先,针对微电网运行逻辑和模态切换的复杂性,运用petri网模型描述各分布式微源的模态切换和控制过程。然后,建立微电网经济运行的目标函数和约束条件,并运用粒子群算法求解微网中各分布式单元的投切状态和具体出力。最后,通过1个典型的孤立型微电网进行分析。仿真结果表明所提出的优化策略对微电网的经济运行具有一定的指导作用。

Microgrid is one of the main directions of future power grid development. In order to realize the economical operation of the microgrid, the paper does a research on isolated microgrid containing multiple micro-sources, and proposes a microgrid optimization strategy based on Petri net and particle swarm optimization （PSO）. Firstly, in the light of the complexity of microgrid operation logic and mode switching, the Petri net model is used to describe the mode switching and control process of each distributed micro-source. Then the objective function and constraints of microgrid economic operation is established, and PSO algorithm is applied to calculate the on-off state and output of the each distributed micro-source in the microgrid. Finally, the optimization strategy is applied to a typical isolated microgrid and the result shows that this strategy has a certain guiding effect on the economic operation of the microgrid.