A harmonic and adjacent interharmonics estimation method considering frequency deviation
The adjacent interharmonic pairs or single adjacent interhamonic symmetrical to the fundamental/harmonic component can be caused by the large-scale grid connection of renewable energy. It is usually necessary to confirm the type of adjacent interharmonics to build an accurate calculation model when...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Electric Power Engineering Technology
2023-11-01
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| Series: | 电力工程技术 |
| Subjects: | |
| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/221123640 |
| _version_ | 1797405592576327680 |
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| author | LUO Zhongyou ZHAO Puzhi HOU Bing XU Fangwei |
| author_facet | LUO Zhongyou ZHAO Puzhi HOU Bing XU Fangwei |
| author_sort | LUO Zhongyou |
| collection | DOAJ |
| description | The adjacent interharmonic pairs or single adjacent interhamonic symmetrical to the fundamental/harmonic component can be caused by the large-scale grid connection of renewable energy. It is usually necessary to confirm the type of adjacent interharmonics to build an accurate calculation model when estimating the frequency components in electric signal. However, the spectrum leakage interferences caused by the grid frequency deviation makes that requirement hard to achieve. Towards the problem, an effective criterion to confirm the type of the adjacent interharmonics and an accurate estimation method of the harmonics and adjacent interharmonics based on the criterion even there is frequency deviation are proposed. Firstly, the spectrum leakage interferences are suppressed to obtain the adjacent interharmonic spectral lines by analysing the relationship of the frequency deviation and spectral lines. Then, the type criterion of the adjacent interharmonics is proposed by comparing the spectrum difference between each type of adjacent interharmonics. Finally, the spectral line equation for each type of adjacent interharmonics are constructed according to the confirmed type to accurately estimate the harmonics and adjacent interharmonics. Even there is frequency deviation, the type of the adjacent interharmnics can be confirmed accurately and a more precise estimation of the harmonics and adjacent interharmonics can be achieved with the proposed method. The accuracy of the proposed method is verified by the simulation. |
| first_indexed | 2024-03-09T03:12:14Z |
| format | Article |
| id | doaj.art-c1f5d9e258e148359beb0c8661bd1481 |
| institution | Directory Open Access Journal |
| issn | 2096-3203 |
| language | zho |
| last_indexed | 2024-03-09T03:12:14Z |
| publishDate | 2023-11-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj.art-c1f5d9e258e148359beb0c8661bd14812023-12-04T00:44:16ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032023-11-0142622323110.12158/j.2096-3203.2023.06.024221123640A harmonic and adjacent interharmonics estimation method considering frequency deviationLUO Zhongyou0ZHAO Puzhi1HOU Bing2XU Fangwei3Electric Power Research Institute, State Grid Xinjiang Electric Power Company, Urumqi 830011, ChinaState Grid Xinjiang Electric Power Co., Ltd., Urumqi 830000, ChinaState Grid Xinjiang Electric Power Co., Ltd., Urumqi 830000, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaThe adjacent interharmonic pairs or single adjacent interhamonic symmetrical to the fundamental/harmonic component can be caused by the large-scale grid connection of renewable energy. It is usually necessary to confirm the type of adjacent interharmonics to build an accurate calculation model when estimating the frequency components in electric signal. However, the spectrum leakage interferences caused by the grid frequency deviation makes that requirement hard to achieve. Towards the problem, an effective criterion to confirm the type of the adjacent interharmonics and an accurate estimation method of the harmonics and adjacent interharmonics based on the criterion even there is frequency deviation are proposed. Firstly, the spectrum leakage interferences are suppressed to obtain the adjacent interharmonic spectral lines by analysing the relationship of the frequency deviation and spectral lines. Then, the type criterion of the adjacent interharmonics is proposed by comparing the spectrum difference between each type of adjacent interharmonics. Finally, the spectral line equation for each type of adjacent interharmonics are constructed according to the confirmed type to accurately estimate the harmonics and adjacent interharmonics. Even there is frequency deviation, the type of the adjacent interharmnics can be confirmed accurately and a more precise estimation of the harmonics and adjacent interharmonics can be achieved with the proposed method. The accuracy of the proposed method is verified by the simulation.https://www.epet-info.com/dlgcjsen/article/abstract/221123640spectrum leakageadjacent interharmonicsfrequency deviationspectrum differencecriterion of adjacent interharmonics typesspectral line equations of the adjacent interharmonics |
| spellingShingle | LUO Zhongyou ZHAO Puzhi HOU Bing XU Fangwei A harmonic and adjacent interharmonics estimation method considering frequency deviation 电力工程技术 spectrum leakage adjacent interharmonics frequency deviation spectrum difference criterion of adjacent interharmonics types spectral line equations of the adjacent interharmonics |
| title | A harmonic and adjacent interharmonics estimation method considering frequency deviation |
| title_full | A harmonic and adjacent interharmonics estimation method considering frequency deviation |
| title_fullStr | A harmonic and adjacent interharmonics estimation method considering frequency deviation |
| title_full_unstemmed | A harmonic and adjacent interharmonics estimation method considering frequency deviation |
| title_short | A harmonic and adjacent interharmonics estimation method considering frequency deviation |
| title_sort | harmonic and adjacent interharmonics estimation method considering frequency deviation |
| topic | spectrum leakage adjacent interharmonics frequency deviation spectrum difference criterion of adjacent interharmonics types spectral line equations of the adjacent interharmonics |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/221123640 |
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