Research on power control strategy of household-level electric power router based on hybrid energy storage droop control

Protection and Control of Modern Power Systems

Xin Meng¹  Yanbin Zhu¹  Yanman Li²  Kun Huang²  Xiaoyan Zhang²  Lei Liu³ 

[1] Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, 300072, Tianjin, China;NARI Technology Development Co., Ltd, No.19, Chengxin Avenue, Jiangning District, Nanjing City, Jiangsu Province, China;Nari Group Corporation/State Grid Electric Power Research Institute, No.19, Chengxin Avenue, Jiangning District, Nanjing City, Jiangsu Province, China;School of Physics, University of Oxford, OX13RH, Oxford, UK;

关键词: Household-level electric power router;    Hybrid energy storage;    Droop control;    On-grid mode;    Off-grid mode;   

DOI  :  10.1186/s41601-021-00190-2

来源: Springer

【 摘 要 】

In the light of user-side energy power control requirements, a power control strategy for a household-level EPR based on HES droop control is proposed, focusing on the on-grid, off-grid and seamless switching process. The system operating states are divided based on the DC bus voltage information with one converter used as a slack terminal to stabilize the DC bus voltage and the other converters as power terminals. In the on-grid mode, the GCC and the HES are used as the main control unit to achieve on-grid stable operation, whereas in the off-grid mode, the PV, HES and LC are used as the main control unit at different voltages to achieve stable operation of the island network. Finally, a DC MG system based on a household-level EPR is developed using the PSCAD / EMTDC simulation platform and the results show that the control strategy can effectively adjust the output of each subunit and maintain the stability of the DC bus voltage.

【 授权许可】

CC BY