Exponential-function-based droop control for islanded microgrids

作     者：Rui WANG Qiuye SUN Yonghao GUI Dazhong MA 

作者机构：College of Information Science and EngineeringNortheastern UniversityShenyangChina Department of Electronic SystemsAalborg UniversityAalborgDenmark 

出 版 物：《Journal of Modern Power Systems and Clean Energy》 (现代电力系统与清洁能源学报（英文）)

年 卷 期：2019年第7卷第4期

页      面：899-912页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 

基　　金：supported by National Key Research and Development Program of China(No.2017YFF0108800) National Natural Science Foundation of China(Nos.61773109,6143304) Major Program of National Natural Foundation of China(No.61573094) 

主　　题：Distributed energy resources(DERs) Reactive power-sharing Droop control Bidirectional power flow 

摘      要：An exponential-function-based droop control strategy for the distributed energy resources(DERs)is proposed to reduce the reactive power-sharing deviation,limit the minimum value of frequency/voltage,whilst improving the utilization rate of renewable *** DERs and loads are interconnected to achieve a power exchange by converters,where the power management system should accurately share the active/reactive power ***,the proportional reactive power sharing often deteriorates due to its dependence on the line ***,an exponential-function-based droop control is proposed to(1)prevent voltage and frequency from falling to the lower restraint,(2)achieve accurate reactive power sharing,(3)eliminate communication and improve the usage ratio of renewable ***,its stability is analyzed,and the application in islanded AC/DC hybrid microgrids is investigated to achieve the bidirectional power *** simulation and experimental results show that the reactive power sharing deviation can be reduced,and the utilization rate of renewable energy is improved by using the proposed ***,the simulation results illustrate that the system can maintain stable operation when the microgrid is switched from one supplied energy operation condition to another absorbed one.