上海交通大学学报

上海交通大学学报 >

2026 , Vol. 60 >Issue 1: 32 - 41

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2024.054

新型电力系统与综合能源

基于薄弱点定位的电力电子化交流配用电系统振荡抑制方法

  • 沈冰 ,
  • 柴炜 ,
  • 王凯 ,
  • 李骁远 ,
  • 吕敬
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  • 1 国网上海市电力公司 电力科学研究院, 上海 200437
    2 上海交通大学 电力传输与功率变换控制教育部重点实验室, 上海 200240
沈 冰(1979—),高级工程师,从事电网电能质量、配电自动化等研究.
吕 敬,副教授,博士生导师;E-mail:lvjing@sjtu.edu.cn.

收稿日期: 2024-02-16

  修回日期: 2024-04-22

  录用日期: 2024-04-30

  网络出版日期: 2024-05-20

基金资助

国网上海市电力公司科技项目(52094022003R)

收起

Oscillation Suppression Method of Power Electronic Alternating Current Distribution System Based on Weak Point Location

  • SHEN Bing ,
  • CHAI Wei ,
  • WANG Kai ,
  • LI Xiaoyuan ,
  • Lü Jing
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  • 1 Electric Power Research Institute, State Grid Shanghai Municipal Electric Power Company, Shanghai 200437, China
    2 Key Laboratory of Control of Power Transmission and Conversion of the Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2024-02-16

  Revised date: 2024-04-22

  Accepted date: 2024-04-30

  Online published: 2024-05-20

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摘要

近年来,电力电子变流器因其可控性与灵活性等特点,在交流配用电系统中得到大量应用.然而,随着电力电子设备接入比例不断提高,高度电力电子化带来的振荡稳定性问题成为目前新型配用电系统面临的关键技术难题之一.在实际交流配用电系统中,次/超同步振荡问题频发,严重影响工业生产和电网安全稳定运行.为此,提出一种基于薄弱点定位的电力电子化交流配用电系统振荡抑制方法.首先,构建电力电子化交流配用电系统的频域阻抗网络,建立该系统的节点导纳矩阵模型,基于主导特征值分析多机系统的次/超同步稳定性.然后,进一步计算得到系统薄弱模态的节点参与因子矩阵,确定系统薄弱节点,并定义节点耦合度,量化评估节点间的交互作用强弱;最后,提出一种基于直流电压反馈有源阻尼的振荡抑制方法.通过某实际电力电子化交流配用电系统算例验证了所提方法的有效性.

关键词： 电力电子化电力系统; 次同步振荡; 薄弱点定位; 节点参与因子; 频域模态分析

本文引用格式

沈冰 , 柴炜 , 王凯 , 李骁远 , 吕敬 . 基于薄弱点定位的电力电子化交流配用电系统振荡抑制方法[J]. 上海交通大学学报, 2026 , 60(1) : 32 -41 . DOI: 10.16183/j.cnki.jsjtu.2024.054

Abstract

In recent years, power electronic converters have been widely used in alternating current (AC) power distribution systems due to their controllability and flexibility. However, as the penetration of power electronic equipment continues to increase, the oscillation stability issues caused by high-penetration power electronics have become one of the key technical challenges faced by new power systems. In actual AC power distribution systems, the sub/super-synchronous oscillation problems occur frequently, seriously affecting industrial production and the safe and stable operation of power grid. Therefore, an oscillation suppression method for power electronic AC distribution system based on weak point location is proposed in this paper. First, the sub/super-synchronous stability of multi-machine system is analyzed based on dominant eigenvalue by constructing the frequency-domain impedance network of power electronic AC power distribution system and establishing the node admittance matrix model of the system. Then, the participation factor matrix of the weak mode of the system is further calculated to determine the weak nodes, and node coupling degree is defined to quantitatively evaluate the interaction between nodes. Finally, an oscillation suppression method based on DC voltage feedback active damping is proposed. The effectiveness of the proposed method is verified through case studies on an actual power electronic AC power distribution system.

Key words： power electronic based power system; subsynchronous oscillation; weak point location; node participation factor; frequency-domain modal analysis

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