基于伪分层架构的孤岛交流微网可调度下垂控制

A Dispatchable Droop Control for Islanded AC Microgrids Based on Pseudo Hierarchical Framework

提出了一种适用于孤岛交流微网的可调度下垂控制方法。该方法利用一阶惯量实现伪分层控制架构,可实现微网内分布式电源在较小的时间尺度上自动分配功率,并在较大的时间尺度上服从调度指令。该方法不仅包含有功功率调节和频率恢复控制,还含有无功调节控制和电压控制。即使给定的功率控制参考值不可行,所提方法仍然适用。最后,通过Matlab/Simulink的仿真验证了该方法的有效性。

A dispatchable droop control method for multiple distributed generators which can be applied in islanded AC microgrids was proposed. In the proposed method,the first-order inertia elements was utilized to achieve pseudo hierarchical control so that the distributed generator(DG)could share the load automatically on a smaller time scale and obey the dispatch order on a larger time scale. On one hand,the proposed method contains active power regulation and frequency restoration control simultaneously. On the other hand,it has either the reactive power regulation control and the voltage control for different situations. The proposed method is still applicable even when the given power control references are infeasible. The effectiveness of the proposed method was verified by the corresponding simulation based on Matlab/Simulink.