微电网储能系统过充和过放保护方案  

Overcharging and overdischarging protection scheme of microgrid energy storage systems

作　　者：吴青峰 智泽英[1] 于少娟[1] 赵志诚[1] 孙孝峰[2] WU Qing-feng;ZHI Ze-ying;YU Shao-juan;ZHAO Zhi-cheng;SUN Xiao-feng(College of Electronic Information Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China;Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province,Yanshan University,Qinhuangdao Hebei 066004,China)

机构地区：[1]太原科技大学电子信息工程学院,山西太原030024 [2]燕山大学电力电子节能与传动控制河北省重点实验室,河北秦皇岛066004

出　　处：《电源技术》2020年第12期1843-1846,共4页Chinese Journal of Power Sources

基　　金：山西省重点研发计划项目(201803D121025);太原科技大学博士科研启动基金(20202005,20202007)。

摘　　要：针对孤岛交流微电网内分布式储能系统(DESS)采用传统P-f下垂控制面临的过充和过放问题,提出一种基于下垂控制的微电网储能单元过充和过放保护方案。在DESS的荷电状态(SOC)达到其限制值时,所提方案将DESS逆变器工作模式由电压控制模式(VCM)转换成功率控制模式(PCM),从而调节逆变器输出的有功功率,防止DESS的过充和过放。仿真结果验证了所提方案的有效性。Aiming at the overcharging and over discharging problems of distributed energy storage systems in isolated AC microgrid using conventional P-f droop control,an overcharging and overdischarging protection scheme based on droop control was proposed.When the state of chargeof DESS reached its limit value,the proposed scheme wouldl change the operating mode of the inverter from voltage control mode(VCM)to power control mode(PCM),so as to adjust the output active power of inverter and prevent the overcharge and overdischarge of DESS.The simulation results verify the effectiveness of the proposed scheme.

关 键 词：孤岛微电网 分布式储能系统 下垂控制 过充和过放保护 

分 类 号：TM46[电气工程—电器]