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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Sustainable Energy Systems
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1387670
This article is part of the Research Topic Low-Carbon Oriented Improvement Strategy for Flexibility and Resiliency of Multi-Energy Systems View all 24 articles

An adaptive power control method for Soft open points based on virtual impedance

Provisionally accepted
Li Yan Li Yan 1*Li Yang Li Yang 1*Zhao Xingjian Zhao Xingjian 2*Gao Feng Gao Feng 2*Tao Xu Tao Xu 2*
  • 1 State Grid Shandong Electric Power Company, Jinan, Shandong Province, China
  • 2 Shandong University, Jinan, China

The final, formatted version of the article will be published soon.

    The fluctuations in power output from distributed power sources are rapid and dramatic, causing voltage fluctuations in the distribution network that threaten the safety of electricity consumption. Soft open points (SOP) can replace traditional contact switches and are expected to suppress voltage fluctuations. However, traditional power regulation methods based on reference values are unable to address rapid and large voltage fluctuations. Therefore, this paper proposes an adaptive power control method for SOP based on virtual impedance. The SOP is modelled as series link of adjustable impedance and a voltage source. Then, the voltage difference component is used to calculate the reference for DQ domain to regulate power flow in real time automatically. Doing so, the proposed method can smooth the voltage fluctuations in the distribution network. Additionally, the virtual impedance is also optimized to minimize the power loss. Finally, the method is validated through simulation and experiments, demonstrating that this method can automatically regulate power and significantly reduce voltage fluctuations.

    Keywords: Soft Open Point, virtual impedance, Adaptive power control, voltage fluctuations, PSO

    Received: 18 Feb 2024; Accepted: 12 Jun 2024.

    Copyright: © 2024 Yan, Yang, Xingjian, Feng and Xu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Li Yan, State Grid Shandong Electric Power Company, Jinan, 250001, Shandong Province, China
    Li Yang, State Grid Shandong Electric Power Company, Jinan, 250001, Shandong Province, China
    Zhao Xingjian, Shandong University, Jinan, China
    Gao Feng, Shandong University, Jinan, China
    Tao Xu, Shandong University, Jinan, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.