高渗透率下微电网和大电网的作用机理研究

Study on the Action Mechanism of Microgrid and Large Grid under High Permeability

微电网中分布式电源渗透率的逐渐增加对配电网络的可靠运行和控制提出了重大挑战.研究微电网和大电网作用机理的首要问题就是建立微电网的动态等值模型.本文首先简要介绍了微电网的运行控制模式和分层控制策略.然后,给出了两种典型的针对微电网进行动态等值建模的基本方法.最后,探讨了不同渗透率下微电网对大电网影响的一般方法.

The increasing integration of distributed generators into microgrids presents major challenges to the distribution network for reliable operation and control.The dynamic modeling of microgrid is the main issue in study of the interaction mechanism between microgrid and bulk power system.First,this paper briefly introduces the operation modes and the hierarchical control strategies for microgrid.Then,two typical methods for dynamic equivalent modeling of microgrid are presented.Finally,the general method of studying the influence of microgrid on the bulk power system under different permeability is discussed.