基于局部变权与灰色关联分析的电压暂降评估分析
Analysis of Voltage Sag Assessment Based on Local Variable Weight and Grey Correlation
孙宗宇 1刘晓波 1包宁宁1
作者信息
- 1. 贵州大学 电气工程学院,贵州 550025
- 折叠
摘要
阐述基于局部变权与灰色关联分析的双侧电压暂降综合评估方法.通过局部状态变权的方法,对变化趋势不同的系统侧指标修正权重,依据敏感设备耐受曲线计算敏感负荷故障率作为负荷侧指标,基于灰色关联分析方法计算各节点评估指标序列与参考序列的关联度大小,得到更合理、准确的电压暂降评估结果.
Abstract
This paper describes a comprehensive evaluation method for bilateral voltage sags based on local variable weight and gray correlation analysis is proposed.Through the method of local state variable weight,the weight of system side indicators with different change trends is modified,and the sensitive load failure rate is calculated based on the sensitive equipment tolerance curve as the load side indicator.Based on the gray correlation analysis method,the correlation degree between the evaluation index series of each node and the reference series is calculated to obtain a more reasonable and accurate voltage sag evaluation result.
关键词
电压暂降/随机预估/局部状态变权/敏感设备/灰色关联分析法Key words
voltage sag/random estimation/local state variable weight/sensitive equipment/grey correlation analysis method引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据