电网技术Issue(5)：1285-1290,6.
快速S变换在电能质量分析中的应用
Application of Fast S-Transform in Power Quality Analysis
张志禹 1满蔚仕 1郗垒 1黄璐瑶1
作者信息
- 1. 西安理工大学 自动化学院，陕西省 西安市 710048
- 折叠
摘要
Abstract
S transform is a time-frequency transform with adaptive resolution, which is widely used in analyzing the power quality recently. However,the traditional S transform is very computation-intensive( O(N3) time complexity) and difficult to meet the real-time requirements. A new fast S transform (FST) algorithm (O(NlogN) time complexity) is introduced to analyze the power quality, which can differentiate the different voltage disturbances in the FST domain, and denoise the voltage disturbances. Compared with the traditional S-transform in terms of efficiency, simulation results show that the different voltage disturbances have different coefficient manifestations in the FST domain, and the original time-domain voltage signal is recovered after the voltage noise disturbances are suppressed with FST algorithm. The FST algorithm shows better real-time in view of computational time and memory share.关键词
电能质量/快速S变换/降噪/检测/实时性Key words
power quality/fast S transform/denoising/detection/real-time分类
信息技术与安全科学引用本文复制引用
张志禹,满蔚仕,郗垒,黄璐瑶..快速S变换在电能质量分析中的应用[J].电网技术,2013,(5):1285-1290,6.
