Unbalanced Voltage Suppression of Bipolar DC Microgrids with Integration of DC Zero-carbon Buildings  

作　　者：Xuefei Zhang Chunsheng Guo Yiyao Zhou Xiaolong Xu Jianquan Liao Niancheng Zhou Qianggang Wang 

机构地区：[1]State Key Laboratory of Power Transmission Equipment Technology,School of Electrical Engineering,Chongqing University,Chongqing,China [2]College of Electrical Engineering,Sichuan University,Chengdu,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第6期1942-1956,共15页现代电力系统与清洁能源学报(英文)

基　　金：This work was supported by the National Natural Science Foundation of China(No.52077017).

摘　　要：Considering the majority of electrical equipment utilized in society is driven by DC,integrating a DC system can significantly enhance the efficiency and reliability of power sys-tems by implementing the integration of diverse loads,renew-able energy sources(RESs),and energy storage systems(ESSs).In this paper,the integration of multiple DC zero-carbon build-ings(DC-ZCBs)is proposed to achieve the unbalanced voltage suppression of the bipolar DC microgrid(DCMG).The photo-voltaic(PV)technology,loads,and DC electric springs(DC-ESs)are adopted as a unified entity to achieve the zero-carbon emission of the building.Firstly,a new configuration of PV and DC-ESs is introduced.The energy management of PV,ESS,and load are fully considered in this new configuration,which can reduce the capacity of the EsS.Subsequently,a distributed co-operative control strategy for DC-ESs based on the modulus voltage is presented,which is implemented with integration of the new configuration into the bipolar DCMG.The proposed approach addresses the issues of unbalanced voltage to improve the operating efficiency and power quality of the bipolar DC-MG.The simulation is conducted in MATLAB/Simulink plat-form to confirm the effectiveness of the proposed approach.

关 键 词：Bipolar DC microgrid(DCMG) DC zero-car-bon building(DC-ZCB) electric spring(ES) modulus voltage control unbalanced voltage suppression 

分 类 号：TM73[电气工程—电力系统及自动化] TU85[建筑科学]