| 引用本文: | 蒋莉,$2.采用CMFB及WPT技术的信号检测方法[J].电力自动化设备,2000,(2):17-19,25 |
| .Signal Detection Methods with CMFB and WPT Techniques[J].Electric Power Automation Equipment,2000,(2):17-19,25 |
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| 摘要: |
| 针对目前电网信号检测的局限性，介绍了基于这求全责备科弦调制滤波器组及紧支撑正交小波包变换的电网信号检测方案，并半传统的基于离散Ｆｏｕｒｉｅｒ变换的检测技术与这两种新方法作了比较，为电网信号的高分辩检测提供了可参考的理论依据。 |
| 关键词: 信号检测 CMFB WPT 电网 电力系统 |
| DOI： |
| 分类号:TM711 |
| 基金项目: |
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| Signal Detection Methods with CMFB and WPT Techniques |
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JIANG Li
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| Abstract: |
| Two new methods for power system signal detection are introduced to overcome the limitation of conventional techniques,which are based on cosine modulated filter bank with perfect reconstruction and compactly supported orthogonal wavelet packet transform.The new methods are compared with that of discrete Fourier transform.The results show that the CMFB and WPT signal detection techniques are more predominant over FFT at some aspects,such as resolution,leakage and transient.Referable theoretical bases are provided for accurate detection of power system signal. |
| Key words: signal detection,cosine modulated filter bank,wavelet packet transform |
