基于离散小波变换的交流输电线路永久性单相接地故障辨识研究
Research on permanent single line-to-ground fault identification of AC transmission lines based on discrete wavelet transform
张涛 1王飞 1张亚 1王飞林1
作者信息
- 1. 国网安徽省电力有限公司淮北供电公司,安徽 淮北 235000
- 折叠
摘要
为实现对交流输电线路永久性单相接地故障的准确辨识,引入离散小波变换,开展交流输电线路单永故障辨识研究.利用离散小波变换,对交流输电线路信号进行降噪处理.对单相永久性故障进行判别和计算,设定阈值,完成交流输电线路单相永久性故障辨识.通过对比试验证明,新的辨识方法可得到更加接近实际情况的辨识结果,具备较高的辨识准确性,值得广泛应用和推广.
Abstract
In order to achieve accurate identification of permanent single line-to-ground faults in AC transmission lines,discrete wavelet transform is introduced to conduct research on permanent single line-to-ground fault identification in AC transmission lines.Using discrete wavelet transform to denoise the AC transmission line signals,allowing for discrimination and calculation of single-phase permanent faults.Setting a threshold to complete the identification of permanent single-phase faults in AC transmis-sion lines.Comparative experiments have shown that the new identification method can obtain identification results that are closer to the actual situation,with extremely high identification accuracy,and is worthy of wide application and promotion.
关键词
单相接地故障/离散小波变换/输电线路Key words
single line-to-ground fault/discrete wavelet transform/transmission line引用本文复制引用
出版年
2024
NETL
NSTL
万方数据