In order to enhance the power allocation between the parallel operations of distributed generation (DG) precisely and improve the stability of the whole system,a control strategy based on improved dynamic droop coefficient for micro-grid is proposed.By introducing the power sensitivity factor as well as the dynamic droop coefficient which is consist of the combination of power and droop coefficient to improve the dynamic performance of droop control and realize the power allocation between the various DGs.Theoretical analysis,simulation and experimental results verify the effectiveness of the proposed control strategy.%为了进一步增强并联运行的分布式发电单元(DG)之间功率分配精度及系统运行的稳定性,提出一种基于改进动态下垂系数的微电网控制策略,通过引入功率、下垂系数组合的动态下垂系数项来代替传统的下垂系数,构成随功率变化的动态下垂系数,并设计功率灵敏度因子,达到改善下垂控制的动态性能、实现各个DG之间功率均分的目的.理论分析、仿真与实验结果均验证了所提控制策略的有效性.
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