The active control strategy on the output power for photovoltaic-storage systems based on extended PQ-QV-PV Node

7th International Conference on Environment and Industrial Innovation

生态环境科学;工业技术

Xu, Chen^1 ; Zhou, Bao-Rong^1 ; Zhai, Jian-Wei^2 ; Zhang, Yong-Jun^2 ; Ying-Qi, Yi.^2

Technology Research Center of China Southern Power Grid Co.Ltd, GuangZhou City, China^1

School of Electrical Power South China, University of Technology, Guang Zhou city, China^2

关键词: Active control;    Active control methods;    Active power regulations;    Grid-connected photovoltaic inverters;    Photovoltaic inverters;    Reactive power regulation;    Storage systems;    Voltage exceeding;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/67/1/012016/pdf
DOI  :  10.1088/1755-1315/67/1/012016

来源: IOP

【 摘 要 】

In order to solve the problem of voltage exceeding specified limits and improve the penetration of photovoltaic in distribution network, we can make full use of the active power regulation ability of energy storage(ES) and the reactive power regulation ability of grid-connected photovoltaic inverter to provide support of active power and reactive power for distribution network. A strategy of actively controlling the output power for photovoltaic-storage system based on extended PQ-QV-PV node by analyzing the voltage regulating mechanism of point of commom coupling(PCC) of photovoltaic with energy storage(PVES) by controlling photovoltaic inverter and energy storage. The strategy set a small wave range of voltage to every photovoltaic by making the type of PCC convert among PQ, PV and QV. The simulation results indicate that the active control method can provide a better solution to the problem of voltage exceeding specified limits when photovoltaic is connectted to electric distribution network.