Evaluation of dominant factors for stability of grid‐connected inverters based on impedance sensitivity analysis
Abstract This article proposes a method for evaluating the dominant factors of grid‐connected inverters based on impedance models, which can achieve quantitative calculation of the dominant factors of system stability. First, an impedance model was established, and an analysis method based on the im...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-12-01
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| Series: | IET Renewable Power Generation |
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| Online Access: | https://doi.org/10.1049/rpg2.13020 |
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| _version_ | 1832579860436877312 |
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| author | Lei Fang Longji Feng Chengbo Chu Jun Xu Rong Wu Qingchuan Fan |
| author_facet | Lei Fang Longji Feng Chengbo Chu Jun Xu Rong Wu Qingchuan Fan |
| author_sort | Lei Fang |
| collection | DOAJ |
| description | Abstract This article proposes a method for evaluating the dominant factors of grid‐connected inverters based on impedance models, which can achieve quantitative calculation of the dominant factors of system stability. First, an impedance model was established, and an analysis method based on the impedance model was proposed to calculate the absolute sensitivity. The control and circuit parameters of the grid‐connected inverter were calculated, and the impact trend of each parameter on system stability was obtained. Then, in order to eliminate the influence of dimensions between various parameters and achieve traceability of the dominant factors of stability, an absolute sensitivity stability analysis method was proposed to analyze the influencing factors of different frequency bands, and based on this, a suppression scheme of harmonic resonance is proposed. Finally, the accuracy of the method was verified through impedance sweep based on grid‐connected inverters. |
| format | Article |
| id | doaj-art-7e61ebbb2e194756b1140e8680c46f26 |
| institution | Kabale University |
| issn | 1752-1416 1752-1424 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Renewable Power Generation |
| spelling | doaj-art-7e61ebbb2e194756b1140e8680c46f262025-01-30T12:15:53ZengWileyIET Renewable Power Generation1752-14161752-14242024-12-0118163788379710.1049/rpg2.13020Evaluation of dominant factors for stability of grid‐connected inverters based on impedance sensitivity analysisLei Fang0Longji Feng1Chengbo Chu2Jun Xu3Rong Wu4Qingchuan Fan5State Grid Nanjing Power Supply Company Nanjing Jiangsu ChinaState Grid Nanjing Power Supply Company Nanjing Jiangsu ChinaState Grid Nanjing Power Supply Company Nanjing Jiangsu ChinaCollege of Electrical and Information Engineering Hunan University Changsha Hunan ChinaCollege of Electrical and Information Engineering Hunan University Changsha Hunan ChinaCollege of Electrical and Information Engineering Hunan University Changsha Hunan ChinaAbstract This article proposes a method for evaluating the dominant factors of grid‐connected inverters based on impedance models, which can achieve quantitative calculation of the dominant factors of system stability. First, an impedance model was established, and an analysis method based on the impedance model was proposed to calculate the absolute sensitivity. The control and circuit parameters of the grid‐connected inverter were calculated, and the impact trend of each parameter on system stability was obtained. Then, in order to eliminate the influence of dimensions between various parameters and achieve traceability of the dominant factors of stability, an absolute sensitivity stability analysis method was proposed to analyze the influencing factors of different frequency bands, and based on this, a suppression scheme of harmonic resonance is proposed. Finally, the accuracy of the method was verified through impedance sweep based on grid‐connected inverters.https://doi.org/10.1049/rpg2.13020DC‐AC power convertorsimpedance matchingsensitivity analysiswind power |
| spellingShingle | Lei Fang Longji Feng Chengbo Chu Jun Xu Rong Wu Qingchuan Fan Evaluation of dominant factors for stability of grid‐connected inverters based on impedance sensitivity analysis IET Renewable Power Generation DC‐AC power convertors impedance matching sensitivity analysis wind power |
| title | Evaluation of dominant factors for stability of grid‐connected inverters based on impedance sensitivity analysis |
| title_full | Evaluation of dominant factors for stability of grid‐connected inverters based on impedance sensitivity analysis |
| title_fullStr | Evaluation of dominant factors for stability of grid‐connected inverters based on impedance sensitivity analysis |
| title_full_unstemmed | Evaluation of dominant factors for stability of grid‐connected inverters based on impedance sensitivity analysis |
| title_short | Evaluation of dominant factors for stability of grid‐connected inverters based on impedance sensitivity analysis |
| title_sort | evaluation of dominant factors for stability of grid connected inverters based on impedance sensitivity analysis |
| topic | DC‐AC power convertors impedance matching sensitivity analysis wind power |
| url | https://doi.org/10.1049/rpg2.13020 |
| work_keys_str_mv | AT leifang evaluationofdominantfactorsforstabilityofgridconnectedinvertersbasedonimpedancesensitivityanalysis AT longjifeng evaluationofdominantfactorsforstabilityofgridconnectedinvertersbasedonimpedancesensitivityanalysis AT chengbochu evaluationofdominantfactorsforstabilityofgridconnectedinvertersbasedonimpedancesensitivityanalysis AT junxu evaluationofdominantfactorsforstabilityofgridconnectedinvertersbasedonimpedancesensitivityanalysis AT rongwu evaluationofdominantfactorsforstabilityofgridconnectedinvertersbasedonimpedancesensitivityanalysis AT qingchuanfan evaluationofdominantfactorsforstabilityofgridconnectedinvertersbasedonimpedancesensitivityanalysis |