中国电力 ›› 2025, Vol. 58 ›› Issue (3): 193-203.DOI: 10.11930/j.issn.1004-9649.202404129

• 新能源与储能 • 上一篇    下一篇

构网型储能变流器并网性能的多层级评价指标体系及应用

刘雨姗1(), 陈俊儒1(), 常喜强2(), 刘牧阳1   

  1. 1. 新疆大学 可再生能源发电与并网技术教育部工程研究中心,新疆 乌鲁木齐 830047
    2. 国网新疆电力有限公司,新疆 乌鲁木齐 830000
  • 收稿日期:2024-04-28 出版日期:2025-03-28 发布日期:2025-03-26
  • 作者简介:
    刘雨姗(1997),女,博士研究生,从事新能源并网与控制技术研究,E-mail:yushan_liu@stu.xju.edu.cn
    陈俊儒(1991),男,通信作者,副教授,博士生导师,从事电力电子在电力系统中的建模、控制和稳定性分析研究,E-mail:junru.chen@xju.         edu.cn
    常喜强(1976),男,硕士,高级工程师(教授级),从事电力系统运行与控制、电力大数据研究,E-mail:34087311@qq.com
  • 基金资助:
    新疆维吾尔自治区重大科技专项(电压源型风光储并网友好型控制关键技术研发,2022A01004-1)。

Multi-level Evaluation Index System and Application of Grid-Connected Performance of Grid-Forming Energy Storage Converters

Yushan LIU1(), Junru CHEN1(), Xiqiang CHANG2(), Muyang LIU1   

  1. 1. Engineering Research Center of Renewable Energy Power Generation and Grid Connection Technology, Ministry of Education, Xinjiang University, Urumqi 830047, China
    2. State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830000, China
  • Received:2024-04-28 Online:2025-03-28 Published:2025-03-26
  • Supported by:
    This work is supported by Major Science and Technology Project of Xinjiang Uygur Autonomous Region (Research and Development of Key Technologies for Grid-Friendly Control of Voltage-Source-Based Wind-PV-Storage Grid Integration, No.2022A01004-1).

摘要:

为满足电网对构网型储能变流器主动支撑能力的评估需求,提出一套定量评估目前主流变流器控制策略性能与效果的评价指标体系。首先,从电压和频率稳定性的角度出发,观察多时间尺度下功率、电压、频率的特征量,在考虑功率支撑密度和能量支撑密度的前提下,提出一套量化“单机-场站-电网”3个层级性能的评价指标体系。然后,基于Matlab/Simulink仿真平台搭建基于跟网型及构网型控制的储能变流器单机无穷大系统模型,对所提单机侧指标进行分析计算,基于Digsilent仿真平台搭建了南疆区域大电网模型,验证所提场站侧和电网侧指标的有效性。研究结果表明,构网型控制比跟网型控制拥有更好的支撑能力。所提评价指标体系可为构网型储能系统示范工程的现场试验及构网型储能场站的选址定容提供参考。

关键词: 储能变流器, 评价指标体系, 多时间尺度, 跟网型, 构网型

Abstract:

To evaluate the active support capability of grid-forming energy storage converters, a set of quantitative evaluation index system is proposed to evaluate the performance and effectiveness of the current mainstream converter control strategies. Firstly, from the perspective of voltage and frequency stability, the characteristics of power, voltage, and frequency under multi-time scales are observed. Considering the power support density and energy support density, a set of quantitative evaluation indicators system for the three-level performance of "single machine-substation-grid" is proposed. Then, based on the Matlab/Simulink simulation platform, a single-machine infinite system model of the energy storage converters based on grid-following (GFL) and grid-forming (GFM) controls is built, and the proposed single-machine side indicators are analyzed and calculated. And a large-scale power grid model in the Southern Xinjiang region is also built based on the DIgSILENT simulation platform to verify the effectiveness of the proposed field station side and grid side indicators. The research findings demonstrate from the perspective of indices that the GFM control has better support capabilities than the GFL control. The proposed evaluation index system can provide a reference for field testing of GFM energy storage system demonstration projects and selection of location and capacity for GFM energy storage stations.

Key words: energy storage converters, evaluation indicator system, multi-time scale, grid-following, grid-forming

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