【摘要】 提出了一种根据可调度微电源无功出力信息,在线计算无功-电压下垂曲线的斜率、电压和无功参考值的算法.在一次电压下垂控制基础上,通过动态调整下垂曲线斜率、电压和无功参考值,改善分布式可调度微电源无功输出的均分能力.负载无功需求平衡后,通过分布式二次电压调整将微电源端电压恢复到允许范围内,以提高电压质量,并实现分布式调压和无功输出均分.在Matlab/Simulink平台上搭建微网动态模型,仿真验证了所提策略的有效性.更多还原

【Abstract】 An algorithm for online computing Q-U droop rate,voltage and reactive power reference values is proposed according to schedulable DGs reactive power output information. Based on the primary Q-U droop control,the ability DGs to share the reactive power is improved by dynamically adjusting the droop rate,voltage and reactive power reference values. After the load demands are satisfied,the distributed secondary voltage control restores the voltage amplitude of DGs to normal range and improves voltage quality. The strategy proposed can realize the distributed voltage stable control and reactive power sharing function. The dynamic simulation model of MG on Matlab/Simulink platform is built. Simulation results verify the effectiveness of the proposed strategy.更多还原