Research on Forced Sub-synchronous Oscillation Source Tracing Method Based on Distributed Collaboration

WU Xi; HE Qin; CHEN Xi; ZHOU Jinyu; LIAO Kai

doi:10.13334/j.0258-8013.pcsee.240887

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Research on Forced Sub-synchronous Oscillation Source Tracing Method Based on Distributed Collaboration

更新时间：2026-10-12

- Research on Forced Sub-synchronous Oscillation Source Tracing Method Based on Distributed Collaboration
- Vol. 45, Issue 20, Pages: 7881-7892(2025)
- 作者机构：
  
  1. 东南大学电气工程学院,江苏省,南京市,210096
  2. 西南交通大学电气工程学院,四川省,成都市,610031
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.240887
  CLC：
- Published：2025
- 稿件说明：
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WU Xi, HE Qin, CHEN Xi, et al. Research on Forced Sub-synchronous Oscillation Source Tracing Method Based on Distributed Collaboration[J]. 2025, 45(20): 7881-7892.
DOI：

WU Xi, HE Qin, CHEN Xi, et al. Research on Forced Sub-synchronous Oscillation Source Tracing Method Based on Distributed Collaboration[J]. 2025, 45(20): 7881-7892. DOI： 10.13334/j.0258-8013.pcsee.240887.

摘要

电力系统中的次同步振荡(sub-synchronous oscillation，SSO)现象日益频繁，严重危害电网稳定性，实现次同步振荡的快速精准溯源具有重要意义。然而相对于低频振荡，次同步振荡频率更高，需要更高频率的采样数据才能保证分析的准确性，严重增加了计算负担，传统的集中式计算方法在实时计算和通信方面面临巨大挑战。为此，提出一种分布式协同的次同步振荡溯源方法，首先构建面向电力系统次同步振荡溯源的多智能体分层分布式系统框架，制定次同步振荡测量终端、本地层子站(local layer substations，LLS)及中心层主站的工作职能。其次，研究本地层子站间的自适应协作机制，通过子站收集并就地处理量测数据，基于平均一致性算法将少量能量信息进行交互，实现次同步振荡的快速协同溯源。分布式协同方式大大减少了控制中心/主站的数据传输和计算压力，可为实现强迫次同步振荡快速精确溯源提供算法支持。

Abstract

The occurrence of Sub-synchronous oscillation (SSO) in power systems is becoming increasingly frequent

significantly threatening the stability of the grid. Therefore

it is important to achieve rapid and accurate tracing of SSO source. However

SSO occurs at higher frequencies compared to low-frequency oscillations

requiring higher-frequency sampling data to ensure accuracy of the analysis. This requirement significantly increases the computational burden. Therefore

traditional centralized computing methods face significant challenges in real-time computation and communication. To fill this gap

a distributed collaborative method for the forced SSO source tracing is proposed in this paper. A hierarchical distributed system framework is constructed to trace the forced SSO source in power systems. It defines the roles and responsibilities of SSO measurement terminals

local layer substations(LLS)

and central layer main stations. Then

an adaptive cooperation mechanism among local layer substations is developed

where measurement data are collected and processed locally. Based on an average consensus algorithm to exchange a small amount of energy information

the fast collaborative tracing of SSO source is achieved. The distributed collaborative method greatly reduces the data transmission and computational pressure on control centers/main stations

providing algorithmic support for fast and accurate tracing of SSO source.

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