Abstract：The traditional ES topological structure cannot effectively solve the problem of large range fluctuation of user terminal voltage caused by photovoltaic power generation in low-voltage transformer areas. This paper proposes a ES topological structure to ensure that the user terminal load operates at the rated voltage. The principle of the ES topological structure in capacitive and inductive mode is described by phasor graph method. The closed-loop voltage control strategy based on PR controller is proposed to realize the voltage stabilizing function of the ES. The determination conditions and the corresponding steady-state operation interval of the new ES topology under constant voltage and reduction voltage mode are calculated quantitatively, and used as the basis for the parameter design of the experimental device. Finally, experiments have verified the feasibility and effectiveness of the new ES topology for voltage regulation of the load terminal in daytime and at night.
颜湘武, 贾焦心, 王德胜, 秦本双. 基于电力弹簧的低压台区用户侧电压调节方法[J]. 电工技术学报, 2020, 35(12): 2623-2631.
Yan Xiangwu, Jia Jiaoxin, Wang Desheng, Qin Benshuang. User-Side Voltage Regulation Method for Transformer Areas Based on Electric Spring. Transactions of China Electrotechnical Society, 2020, 35(12): 2623-2631.
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2020, Vol. 35 
