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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Smart Grids
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1463229
This article is part of the Research Topic Modeling and Control of Power Electronics for Renewables View all 3 articles

Research on static voltage stability enhancement for new energy station based on grid-forming control strategy

Provisionally accepted
Wentao Sun Wentao Sun 1*Guojing Liu Guojing Liu 2Yi Ge Yi Ge 1*Quanquan Wang Quanquan Wang 1*Hui Cai Hui Cai 1*Xingning Han Xingning Han 1*Wenjia Zhang Wenjia Zhang 2*
  • 1 State Grid Jiangsu Electric Power Co., LTD, Economic and technological research institute, Nanjing, China
  • 2 State Grid Jiangsu Electric Power Co., LTD, Nanjing, Jiangsu Province, China

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

    The advent of novel power systems has given rise to a multitude of safety and stability concerns associated with the integration of emerging energy sources and power electronic equipment. The active support of the grid-forming control strategy represents an effective solution to the voltage and frequency stability issues associated with the weak damping and low inertia inherent to high-ratio new energy systems. Firstly, a static voltage stability index based on critical impedance is proposed for assessment of the static stability margin of a new energy grid-connected system, based on the static voltage stability theory of a traditional single-unit single-load system. Secondly, an analysis is conducted of the control principle of the grid-forming control converter and its impedance characteristics. In conclusion, a method for enhancing the static voltage stability margin of gridconnected new energy stations through parameter control of grid-forming converters is presented.The simulation verification of the single-feed and multi-feed systems demonstrates the efficacy and accuracy of the methodology presented in this study.

    Keywords: new power systems, High penetration of new energy, Grid-forming control, Converter impedance characteristics, Static voltage stability

    Received: 11 Jul 2024; Accepted: 16 Oct 2024.

    Copyright: © 2024 Sun, Liu, Ge, Wang, Cai, Han and Zhang. 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:
    Wentao Sun, State Grid Jiangsu Electric Power Co., LTD, Economic and technological research institute, Nanjing, China
    Yi Ge, State Grid Jiangsu Electric Power Co., LTD, Economic and technological research institute, Nanjing, China
    Quanquan Wang, State Grid Jiangsu Electric Power Co., LTD, Economic and technological research institute, Nanjing, China
    Hui Cai, State Grid Jiangsu Electric Power Co., LTD, Economic and technological research institute, Nanjing, China
    Xingning Han, State Grid Jiangsu Electric Power Co., LTD, Economic and technological research institute, Nanjing, China
    Wenjia Zhang, State Grid Jiangsu Electric Power Co., LTD, Nanjing, 210000, Jiangsu Province, 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.