A Local Control Strategy for Voltage Fluctuation Suppression in a Flexible Interconnected Distribution Station Area Based on Soft Open Point

Zhichun Yang, Fan Yang, Huaidong Min, Yu Shen, Xu Tang, Yun Hong and Liang Qin ()
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Zhichun Yang: Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
Fan Yang: Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
Huaidong Min: Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
Yu Shen: Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
Xu Tang: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Yun Hong: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Liang Qin: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China

Sustainability, 2023, vol. 15, issue 5, 1-13

Abstract: Fluctuations in the output power of a high penetration distributed generation (DG) will result in severe voltage fluctuations/violations in the power distribution station area (DSA). This paper proposes the use of Soft Open Point (SOP) for DSA interconnection to alleviate voltage violations and frequent fluctuations. Firstly, the typical topology of a flexible interconnected DSA is introduced, and then the correlation between active/reactive power fluctuations and voltage fluctuations in DSA is analyzed, according to which a local control strategy is proposed to achieve voltage control by relying only on the local electrical information of the nodes connected to the SOP. Finally, the effectiveness of the proposed control strategy is verified by simulation case. The simulation results show that the voltage fluctuation caused by the DG output power fluctuation can be suppressed within tens of milliseconds through the control strategy. This strategy greatly reduces the communication burden and has good real-time performance. It can be used as an SOP control strategy under conditions of communication failure or to realize a plug-and-play SOP, which has significant engineering importance for solving the voltage violations and frequent fluctuations in DSA and improving the consumption capacity of DGs.

Keywords: flexible interconnected distribution station area; local control; soft open point; transient stability; voltage control (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:5:p:4424-:d:1085052

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