A harmonic detection method for power network based on wavelet transform Mallat algorithm
For the problem that traditional Fourier transform method caused big errors when analyzing power signals of power network under unstable running condition, a harmonic detection method for power network was proposed based on wavelet transform Mallat algorithm. Firstly, power signals are separated int...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Industry and Mine Automation
2014-12-01
|
| Series: | Gong-kuang zidonghua |
| Subjects: | |
| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2014.12.017 |
| _version_ | 1797868736341868544 |
|---|---|
| author | LEI Ruhai HAO Zhe |
| author_facet | LEI Ruhai HAO Zhe |
| author_sort | LEI Ruhai |
| collection | DOAJ |
| description | For the problem that traditional Fourier transform method caused big errors when analyzing power signals of power network under unstable running condition, a harmonic detection method for power network was proposed based on wavelet transform Mallat algorithm. Firstly, power signals are separated into different sub frequency bands according to resolutions. Then each sub frequency band is reconstructed to get fundamental wave of original signal. Finally, the reconstructed signal of fundamental wave is subtracted from the sampled original signal so as to get harmonic signal. The Matlab simulation results show that the method can separate harmonic signal from fundamental wave of power signal with high precision of harmonic detection. |
| first_indexed | 2024-04-10T00:01:41Z |
| format | Article |
| id | doaj.art-da4a62ed32c64763bed0b98a292e25e1 |
| institution | Directory Open Access Journal |
| issn | 1671-251X |
| language | zho |
| last_indexed | 2024-04-10T00:01:41Z |
| publishDate | 2014-12-01 |
| publisher | Editorial Department of Industry and Mine Automation |
| record_format | Article |
| series | Gong-kuang zidonghua |
| spelling | doaj.art-da4a62ed32c64763bed0b98a292e25e12023-03-17T01:50:33ZzhoEditorial Department of Industry and Mine AutomationGong-kuang zidonghua1671-251X2014-12-014012656910.13272/j.issn.1671-251x.2014.12.017A harmonic detection method for power network based on wavelet transform Mallat algorithmLEI RuhaiHAO ZheFor the problem that traditional Fourier transform method caused big errors when analyzing power signals of power network under unstable running condition, a harmonic detection method for power network was proposed based on wavelet transform Mallat algorithm. Firstly, power signals are separated into different sub frequency bands according to resolutions. Then each sub frequency band is reconstructed to get fundamental wave of original signal. Finally, the reconstructed signal of fundamental wave is subtracted from the sampled original signal so as to get harmonic signal. The Matlab simulation results show that the method can separate harmonic signal from fundamental wave of power signal with high precision of harmonic detection.http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2014.12.017harmonic of power networkharmonic detectionwavelet transformmallat algorithmmultiresolution analysis |
| spellingShingle | LEI Ruhai HAO Zhe A harmonic detection method for power network based on wavelet transform Mallat algorithm Gong-kuang zidonghua harmonic of power network harmonic detection wavelet transform mallat algorithm multiresolution analysis |
| title | A harmonic detection method for power network based on wavelet transform Mallat algorithm |
| title_full | A harmonic detection method for power network based on wavelet transform Mallat algorithm |
| title_fullStr | A harmonic detection method for power network based on wavelet transform Mallat algorithm |
| title_full_unstemmed | A harmonic detection method for power network based on wavelet transform Mallat algorithm |
| title_short | A harmonic detection method for power network based on wavelet transform Mallat algorithm |
| title_sort | harmonic detection method for power network based on wavelet transform mallat algorithm |
| topic | harmonic of power network harmonic detection wavelet transform mallat algorithm multiresolution analysis |
| url | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2014.12.017 |
| work_keys_str_mv | AT leiruhai aharmonicdetectionmethodforpowernetworkbasedonwavelettransformmallatalgorithm AT haozhe aharmonicdetectionmethodforpowernetworkbasedonwavelettransformmallatalgorithm AT leiruhai harmonicdetectionmethodforpowernetworkbasedonwavelettransformmallatalgorithm AT haozhe harmonicdetectionmethodforpowernetworkbasedonwavelettransformmallatalgorithm |