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International Journal of Frontiers in Engineering Technology, 2023, 5(1); doi: 10.25236/IJFET.2023.050103.

Considering the comprehensive optimization research of the hybrid energy storage control strategy based on the photovoltaic-storage-DC microgrid

Author(s)

Lu Tianqi, Gao Jing, Yang Bo, Yang Guochen, Li Jiaxin

Corresponding Author:
Lu Tianqi
Affiliation(s)

State Grid Liaoning Electric Power CO, LTD., Power Electric Research Institute, Shenyang 110015, China

Abstract

Considering the state of charge of the energy storage and the deviation of the DC bus reference voltage exceeding the limit, a multi-loop power control strategy is constructed in the front-stage structure, and the state of charge of the energy storage or the deviation of the reference voltage of the DC bus is fed back to the upper limit. In the photovoltaic power controller, the photovoltaic controller deviates from the maximum power operating point and adjusts the reference voltage of the photovoltaic output, thereby preventing the energy storage state of charge from exceeding the set upper limit or the DC bus voltage suddenly rising. On the contrary, the state of charge of the energy storage that exceeds the lower limit or the deviation of the DC bus reference voltage is fed back to the demand response side to send a command to cut off the DC load, to prevent the state of charge from exceeding the set lower limit and the DC bus voltage to drop suddenly, thus realizing the front stage of the system.

Keywords

Photovoltaic storage AC and DC microgrid; island operation; state of charge; power coordination control; master-slave control

Cite This Paper

Lu Tianqi, Gao Jing, Yang Bo, Yang Guochen, Li Jiaxin. Considering the comprehensive optimization research of the hybrid energy storage control strategy based on the photovoltaic-storage-DC microgrid. International Journal of Frontiers in Engineering Technology (2023), Vol. 5, Issue 1: 15-19. https://doi.org/10.25236/IJFET.2023.050103.

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