Harmonic detection of PV power generation system based on DFFT-WT-BP
The existing FFT-WT algorithm and FFT-BP algorithm have advantages only for the detection of certain specific harmonics in photovoltaic systems. In this paper, the FFT-WT algorithm is improved, and a DFFT-WT algorithm is proposed. The FFT-BP algorithm is improved and an improved FFT-BP model is prop...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
National Computer System Engineering Research Institute of China
2019-10-01
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| Series: | Dianzi Jishu Yingyong |
| Subjects: | |
| Online Access: | http://www.chinaaet.com/article/3000109414 |
| _version_ | 1818942917931171840 |
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| author | Sun Cheng Huang Yu Zhu Jianping Zhang Baojian Zhang Zhiyuan Wang Yajing |
| author_facet | Sun Cheng Huang Yu Zhu Jianping Zhang Baojian Zhang Zhiyuan Wang Yajing |
| author_sort | Sun Cheng |
| collection | DOAJ |
| description | The existing FFT-WT algorithm and FFT-BP algorithm have advantages only for the detection of certain specific harmonics in photovoltaic systems. In this paper, the FFT-WT algorithm is improved, and a DFFT-WT algorithm is proposed. The FFT-BP algorithm is improved and an improved FFT-BP model is proposed. On the basis of this, the two are combined, the threshold interval is introduced to limit the search scope of the neural network iteration, and a DFFT-WT-BP(Double FFT-WT-BP) detection algorithm is proposed. The simulation results show that the algorithm can detect complex harmonic signals composed of multiple harmonics in the actual photovoltaic network inversion system, and is more accurate and practical. |
| first_indexed | 2024-12-20T07:19:03Z |
| format | Article |
| id | doaj.art-3469d7d59e6d4acc9983b6c50f45cab5 |
| institution | Directory Open Access Journal |
| issn | 0258-7998 |
| language | zho |
| last_indexed | 2024-12-20T07:19:03Z |
| publishDate | 2019-10-01 |
| publisher | National Computer System Engineering Research Institute of China |
| record_format | Article |
| series | Dianzi Jishu Yingyong |
| spelling | doaj.art-3469d7d59e6d4acc9983b6c50f45cab52022-12-21T19:48:43ZzhoNational Computer System Engineering Research Institute of ChinaDianzi Jishu Yingyong0258-79982019-10-014510717510.16157/j.issn.0258-7998.1900143000109414Harmonic detection of PV power generation system based on DFFT-WT-BPSun Cheng0Huang Yu1Zhu Jianping2Zhang Baojian3Zhang Zhiyuan4Wang Yajing5Shanghai Sunest Electricity Technology Co.，Ltd.，Nanjing 210000，ChinaShandong University of Technology，Zibo 255000，ChinaShanghai Sunest Electricity Technology Co.，Ltd.，Nanjing 210000，ChinaShanghai Sunest Electricity Technology Co.，Ltd.，Nanjing 210000，ChinaShanghai Sunest Electricity Technology Co.，Ltd.，Nanjing 210000，ChinaShandong University of Technology，Zibo 255000，ChinaThe existing FFT-WT algorithm and FFT-BP algorithm have advantages only for the detection of certain specific harmonics in photovoltaic systems. In this paper, the FFT-WT algorithm is improved, and a DFFT-WT algorithm is proposed. The FFT-BP algorithm is improved and an improved FFT-BP model is proposed. On the basis of this, the two are combined, the threshold interval is introduced to limit the search scope of the neural network iteration, and a DFFT-WT-BP(Double FFT-WT-BP) detection algorithm is proposed. The simulation results show that the algorithm can detect complex harmonic signals composed of multiple harmonics in the actual photovoltaic network inversion system, and is more accurate and practical.http://www.chinaaet.com/article/3000109414photovoltaicsharmonicinterharmonicfast fourier transform-wavelet transformfast fourier transform-back propagation |
| spellingShingle | Sun Cheng Huang Yu Zhu Jianping Zhang Baojian Zhang Zhiyuan Wang Yajing Harmonic detection of PV power generation system based on DFFT-WT-BP Dianzi Jishu Yingyong photovoltaics harmonic interharmonic fast fourier transform-wavelet transform fast fourier transform-back propagation |
| title | Harmonic detection of PV power generation system based on DFFT-WT-BP |
| title_full | Harmonic detection of PV power generation system based on DFFT-WT-BP |
| title_fullStr | Harmonic detection of PV power generation system based on DFFT-WT-BP |
| title_full_unstemmed | Harmonic detection of PV power generation system based on DFFT-WT-BP |
| title_short | Harmonic detection of PV power generation system based on DFFT-WT-BP |
| title_sort | harmonic detection of pv power generation system based on dfft wt bp |
| topic | photovoltaics harmonic interharmonic fast fourier transform-wavelet transform fast fourier transform-back propagation |
| url | http://www.chinaaet.com/article/3000109414 |
| work_keys_str_mv | AT suncheng harmonicdetectionofpvpowergenerationsystembasedondfftwtbp AT huangyu harmonicdetectionofpvpowergenerationsystembasedondfftwtbp AT zhujianping harmonicdetectionofpvpowergenerationsystembasedondfftwtbp AT zhangbaojian harmonicdetectionofpvpowergenerationsystembasedondfftwtbp AT zhangzhiyuan harmonicdetectionofpvpowergenerationsystembasedondfftwtbp AT wangyajing harmonicdetectionofpvpowergenerationsystembasedondfftwtbp |