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山东大学学报 (工学版) ›› 2024, Vol. 54 ›› Issue (6): 139-146.doi: 10.6040/j.issn.1672-3961.0.2023.270

• 电气工程 • 上一篇    

基于实时阻抗辨识的跟网型变换器同步稳定性量化评估方法

蒋哲1,2,田浩1,2,朱元振1,2,邢法财1,2,王延团3,叶华3*,牟倩颖3   

  1. 1.国网山东省电力公司电力科学研究院, 山东 济南 250003;2.山东省智能电网技术创新中心, 山东 济南 250003;3.山东大学电气工程学院, 山东 济南 250061
  • 发布日期:2024-12-26
  • 作者简介:蒋哲(1985— ),男,山东淄博人,高级工程师,博士,主要研究方向为电力系统优化调度. E-mail: jiangzhe1985@qq.com. *通信作者简介:叶华(1981— ),男,湖北随州人,教授,博士生导师,博士,主要研究方向为电力系统稳定性分析与控制. E-mail: yehua@email.sdu.edu.cn
  • 基金资助:
    国网山东省电力公司科技资助项目(520626220012)

Quantitative evaluation method for synchronous stability of the grid following converter based on real-time impedance identification

JIANG Zhe1,2, TIAN Hao1,2, ZHU Yuanzhen1,2, XING Facai1,2, WANG Yantuan3, YE Hua3*, MU Qianying3   

  1. 1. State Grid Shandong Electric Power Research Institute, Jinan 250003, Shandong, China;
    2. Shandong Smart Grid Technology Innovation Center, Jinan 250003, Shandong, China;
    3. School of Electrical Engineering, Shandong University, Jinan 250061, Shandong, China
  • Published:2024-12-26

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摘要： 针对跟网型变换器同步稳定性量化评估通常模拟电网电压跌落故障但未考虑短路故障,导致电网等效阻抗变化的问题,提出基于实时阻抗辨识的跟网型变换器同步稳定性量化评估方法。基于所建立的跟网型变换器并网系统同步稳定分析模型,说明电网等效阻抗对系统的同步稳定性有重要影响。考虑故障期间电网等效阻抗的变化,提出一种实时阻抗辨识方法,以迅速、准确地辨识出电网的等效阻抗。将实时阻抗辨识结果应用于构造的李雅普诺夫函数,对跟网型变换器的同步稳定性进行量化评估。在MATLAB/Simulink中进行仿真分析,对发生短路故障时跟网型变换器并网系统的同步稳定性进行量化评估,验证了该方法的正确性与有效性。

关键词: 跟网型变换器, 同步稳定性, 阻抗辨识, 等效阻抗, 李雅普诺夫函数

中图分类号: 

  • TM712
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