电力系统及其自动化学报2024，Vol.36Issue(1)：46-52,7.DOI:10.19635/j.cnki.csu-epsa.001223
基于环境激励的电力系统静态电压稳定在线评估
Online Assessment on Static Voltage Stability of Power system Based on Ambient Excitation
摘要
Abstract
With the increasing complexity of the power grid structure,the traditional static voltage stability analysis method is difficult to meet the requirements of speed and accuracy.In this paper,an on-line assessment method for stat-ic voltage stability based on ambientdata is proposed.First,the sensitivity index based on nodal voltage and line reac-tive power is derived,and a classification of sensitivity index is put forward on the basis of an in-depth analysis of its characteristics under ambient excitation.Second,a K-means anomaly detection algorithm is introduced to deal with the unusual sensitivity values,thus effectively enhancing the accuracy of sensitivity estimation.Third,the weighted aver-age is used to calculate the sensitivity index over a period of time,and the static voltage stability of the system is judged in real time.Finally,the proposed method is verified on an IEEE 10-generator 39-node demonstrating its capability to accurately monitor the static voltage stability of power system.关键词
电力系统/随机响应数据/静态电压稳定/异常灵敏度检测/加权平均值Key words
power system/ambient data/static voltage stability/anomaly sensitivity detection/weighted average分类
信息技术与安全科学引用本文复制引用
王赫,杨德友,王丽馨..基于环境激励的电力系统静态电压稳定在线评估[J].电力系统及其自动化学报,2024,36(1):46-52,7.基金项目
国家重点研发计划"储能与智能电网专项"(2021YFB2400801) （2021YFB2400801）
