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针对含多个分布式电源的微电网协调控制问题,根据电源特性的不同分别进行了控制器设计。运用多智能体技术将集中控制和分散控制有效结合起来,保证微电网在孤岛运行和联网运行模式之间切换时系统稳定运行,基于多智能体技术的能量管理系统对分布式电源的输出进行优化分配。电压/频率控制采用一个与配电网频率同步的正弦信号作为参考电压,控制结构简单且响应速度快,在确保系统的稳定的同时使得微电网频率与配电网维持同步,降低了重新并网的难度。通过PSCAD软件对微电网在不同运行模式下的分布式电源输出和负载变化进行仿真,对结果的分析表明提出的控制结构是正确有效的。
For the coordinated control of microgrids with multiple distributed power sources, controller design is carried out according to different power characteristics. The multi-agent technology is used to effectively combine centralized control and decentralized control to ensure the stable operation of microgrid when switching between islanding and networked operation modes. The energy management system based on multi-agent technology optimizes the output of distributed power supply distribution. The voltage / frequency control uses a sinusoidal signal synchronized with the frequency of the distribution network as a reference voltage. The control structure is simple and the response speed is fast. While ensuring the stability of the system, the frequency of the microgrid and the distribution network are maintained in synchronization, Difficulty. The PSCAD software is used to simulate the distributed power output and load variation of the microgrid in different operation modes. The analysis of the results shows that the proposed control structure is correct and effective.