刘磊,杨燕翔,王军,孙章,青禹成.微电网中基于公共负荷侧电压的改进下垂控制[J].电测与仪表,2018,55(15):91-97. Liu Lei,Yang Yanxiang,Wang Jun,Sun Zhang,Qing Yucheng.Improved droop control based on common load side voltage in microgrid[J].Electrical Measurement & Instrumentation,2018,55(15):91-97.
微电网中基于公共负荷侧电压的改进下垂控制
Improved droop control based on common load side voltage in microgrid
For the microgrid system with multiple inverters connected in parallel, in order to evenly distribute the reactive power of each inverter and reduce the output voltage drop of each inverter, this paper studies the improvement of the traditional droop control method. Firstly, based on the analysis of the traditional droop control method to allocate the inverter reactive power nonuniformity mechanism, a droop control method of introducing common load side voltage feedback is proposed. Then the small signal analysis method is used to model this strategy, which provides a theoretical basis for the system parameters setting. Finally, MATLAB simulation is used to verify the control strategy of this paper. The simulation results show that without affecting the distribution of active load among distributed power sources, the distribution of reactive power among distributed power sources and power quality of microgrid can be improved.
