基于母线Agent的微电网孤岛协调控制策略

A coordinate control strategy of islanded microgrid based on bus agent

微电网是智能电网的一个重要组成部分,能有效地降低分布式电源并网的不利影响。微电网有两种运行模式:并网模式和孤岛模式。当主电网发生故障时,微电网可以脱离主电网独立运行,即运行于孤岛模式。在孤岛模式下微电网必须满足自身供需能量平衡。本文提出了一种完全分布式的多代理系统(Multi-agent system,MAS),使微电网在进入孤岛状态时可以维持区域内功率的平衡,尽量保持对区域内重要负荷的供电。该MAS由公共连接点代理(PCC agent,PA)和母线代理(Bus agent,BA)组成。每一个代理都具备依据自己所掌握的信息独立动作的能力,通过BA之间的通讯来完成控制任务。

Microgrid is a crucial component of smart grid. It can effectively reduce the negative effects of increased connection of distributed generation. Microgrid has two kinds of operation mode: grid-connected model and island model. When the main network encounters a failure,microgird can function independently. The energy balance of supply and demand must be satisfied all by itself in an island model. This paper designs a multi-agent system(MAS) to realize a coordinate control stragegy for islanded microgrid, which makes it possible to maintain the balance of internal power and to manage the power supply of important load lines. This MAS consists of PCC agents(PA) and bus agents(BA). Every agent has the ability of acting independently based on the information it gets. They control the network through communication among BAs.