基于KDE传递熵因果分析的强迫功率振荡扰动源定位方法  

A method for locating the disturbance source of forced power oscillation based on KDE transfer entropy causal analysis

作　　者：王丽馨[1] 王思宇 杨德友 高晗 沙东鹤 蔡国伟[1] WANG Lixin;WANG Siyu;YANG Deyou;GAO Han;SHA Donghe;CAI Guowei(School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,China;School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150001,China)

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150001

出　　处：《电力系统保护与控制》2025年第3期1-12,共12页Power System Protection and Control

基　　金：国家重点研发计划项目资助“响应驱动的大电网稳定性智能增强分析与控制技术”(2021YFB2400800);新能源电力系统全国重点实验室开放课题项目资助(LAPS24014)。

摘　　要：准确、快速定位强迫功率振荡源是抑制强迫功率振荡的关键。在强迫功率振荡过程中,扰动源机组持续向电网中注入能量,非扰动源机组持续吸收能量,扰动源机组与非扰动源机组功率振荡响应之间存在因果关系。从因果关系角度出发,提出了一种基于核概率密度(kernel density estimation,KDE)传递熵(transfer entropy,TE)因果分析的电力系统强迫功率振荡扰动源快速定位方法。该方法首先利用电力系统广域量测信息构建系统各发电机有功功率对之间的KDE传递熵模型,进而采用滑动窗方式计算各发电机对间的传递熵大小。通过对不同发电机对计算得到的传递熵统计结果进行量化比较,确定系统各量测量之间因果传递方向,从而实现系统强迫功率振荡扰动源快速定位。最后,通过IEEE 4机2区域系统及IEEE 16机5区域测试系统仿真数据验证了所提方法的可行性及有效性。Accurate and fast location of the disturbance source of forced power oscillation is the key to suppressing such oscillations.In the process of forced power oscillation,the disturbance source generators continuously inject energy into the power grid,while the non-disturbance source generators continuously absorb energy.There is a causal relationship between the power oscillation response of the disturbance source generators and the non-disturbance source generators.In this paper,a method for fast locating the forced oscillation source in power systems using the kernel density estimation(KDE)transfer entropy(TE)causal analysis is proposed considering casual relationships.This method first uses wide-area measurement information of the power system to construct a KDE transfer entropy model between the active power pairs of each generator in the system.Then,a sliding window method is used to calculate the transfer entropy between each generator pair.By quantitatively comparing the statistical results of the transfer entropy calculated for different generator pairs,the causal transfer direction between the system’s measurements is determined,thereby achieving rapid location of the disturbance source of forced power oscillation in the system.Finally,the feasibility and effectiveness of the proposed method are verified through simulation data from the IEEE 4-machine 2-area system and the IEEE 16-machine 5-area test system.

关 键 词：电力系统 强迫功率振荡 KDE传递熵 因果关系 扰动源定位 

分 类 号：TM712[电气工程—电力系统及自动化]