基于下垂特性的微电网逆变电源控制方法研究

针对微电网对分布式电源的控制要求,提出了一种基于下垂特性的 PQ 控制和 V/f 控制的新型逆变电源控制方法。利用 PSIM 软件对微电网从联网到孤岛的过渡过程、孤岛到联网的过渡过程以及孤岛运行时切增负荷和电源 3 种情况下的分布式电源的频率、有功功率、无功功率、电压、电流变化规律进行分析。仿真结果验证了所提出基于下垂特性的 PQ 控制和 V/f 控制方法的正确性和有效性。

Research on the control method of inverter for micro power grid based on drooping characteristics

Aiming at the control demand of micro power grid for distributed generations,puts forwarda kind of new t ype inverter control method based on PQ control and V/F control with droopingcharacteristics. By applying software PSIM,under the 3 kinds of situation such as the transitionprocess of micro power grid from connected mode to the island mode,the transition process of micropower grid from island mode to connected mode,and when micro power grid island operation switchor increment the load and the generation,analyzes the law of variation about frequency,active power, reactive power,voltage and current of distributed generations. The simulation result shows that thecorrectness and validity of the proposed PQ and V/f control methods based on drooping characteristics.