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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Smart Grids
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1445383
This article is part of the Research Topic Distributed Learning, Optimization, and Control Methods for Future Power Grids, Volume II View all 13 articles

MMC Parameter Selection and Stability Control for Flexible Direct Transmission Converter Station of Energy Storage Power Station

Provisionally accepted
Ye Chang Ye Chang 1,2Jiang Kezheng Jiang Kezheng 1,2Wang Chenyu Wang Chenyu 3*Ji Xiaotong Ji Xiaotong 1,2Liu Dan Liu Dan 1,2
  • 1 State Grid Hubei Electric Power Research Institute,, Wuhan, Hebei Province, China
  • 2 Huazhong University of Science and Technology, Wuhan, Hubei Province, China
  • 3 Northeastern University, Shenyang, China

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

    With the continuous advancement of science and technology, there is a growing global focus on new energy sources. Despite the rapid progress of offshore wind power generation systems, they are still plagued by issues such as significant transmission loss, limited transmission distance, and low-frequency oscillation, which hinder further development. To address these challenges, the Flexible Direct Current Transmission System (VSC-HVDC) has emerged as a widely studied solution. The integration of energy storage power stations presents new opportunities for enhancing offshore wind power transmission systems. These power stations not only serve as energy buffer pools to reduce transmission loss but also improve transmission efficiency through intelligent regulation and control, effectively mitigating low-frequency oscillation. This article introduces an optimization control parameter design method based on sensitivity analysis to enhance the stability of MTDC based on MMC. It outlines the topology structure of the offshore VSC-HVDC system, covering the main circuit and control system. Additionally, the article delves into the derivation of the small signal stability model of the system and investigates the selection of control parameters based on the eigenvalue objective function. Lastly, it analyzes the impact of the control system on the stability of the wind power flexible direct output converter station, highlighting the significant influence of control system parameters on the small signal stability of MTDC systems based on MMC. The MMC parameter selection strategy proposed in this paper is shown to effectively enhance system stability.

    Keywords: Modular multilevel controller, Multi terminal DC transmission system, Parameter selection, stability analysis, Offshore wind farms

    Received: 07 Jun 2024; Accepted: 26 Aug 2024.

    Copyright: © 2024 Chang, Kezheng, Chenyu, Xiaotong and Dan. 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: Wang Chenyu, Northeastern University, Shenyang, 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.