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Optimal Configuration Strategy of Soft Open Point in Flexible Distribution Network Considering Reactive Power Sources

Author

Listed:
  • Qiu Cheng

    (State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China)

  • Xincong Li

    (State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China)

  • Mingzhe Zhang

    (State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China)

  • Fei Fei

    (State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China)

  • Gang Shi

    (Department of Electric Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

Abstract

The intelligent soft open point (SOP) has powerful power flow regulation capabilities in the distribution network. If applied to the distribution network, it can flexibly cope with the output uncertainty of unmanageable distributed energy sources. However, considering the investment, operation, and maintenance costs, as well as the assistance of reactive power equipment, the site selection and capacity determination of SOP have become an urgent problem to be solved. This article proposes the optimal configuration strategy of SOP in a flexible interconnected distribution network, taking into account the features of distributed generation and reactive power sources. Firstly, based on the unpredictability of DG output, this paper uses improved sensitivity analysis to determine the optimal SOP installation location. Subsequently, with the optimization objective of minimizing the annual cost of the distribution network, this paper considers the characteristics of DGs, CBs, and OLCTs and uses second-order cone programming to optimize and solve SOP capacity under constraints such as trends. Finally, in the enhanced IEEE 33-node distribution system model, the effects of different scenarios on node voltage, reactive power components, and SOP location and capacity are compared.

Suggested Citation

  • Qiu Cheng & Xincong Li & Mingzhe Zhang & Fei Fei & Gang Shi, 2025. "Optimal Configuration Strategy of Soft Open Point in Flexible Distribution Network Considering Reactive Power Sources," Energies, MDPI, vol. 18(3), pages 1-19, January.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:3:p:529-:d:1574879
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    References listed on IDEAS

    as
    1. Long, Chao & Wu, Jianzhong & Thomas, Lee & Jenkins, Nick, 2016. "Optimal operation of soft open points in medium voltage electrical distribution networks with distributed generation," Applied Energy, Elsevier, vol. 184(C), pages 427-437.
    2. Zhichun Yang & Fan Yang & Huaidong Min & Yu Shen & Xu Tang & Yun Hong & Liang Qin, 2023. "A Local Control Strategy for Voltage Fluctuation Suppression in a Flexible Interconnected Distribution Station Area Based on Soft Open Point," Sustainability, MDPI, vol. 15(5), pages 1-13, March.
    3. Wang, Chengshan & Song, Guanyu & Li, Peng & Ji, Haoran & Zhao, Jinli & Wu, Jianzhong, 2017. "Optimal siting and sizing of soft open points in active electrical distribution networks," Applied Energy, Elsevier, vol. 189(C), pages 301-309.
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