Impact of Solar Inverter Dynamics during Grid Restoration Period on Protection Schemes Based on Negative-Sequence Components
The growing penetration of renewable resources such as wind and solar into the electric power grid through power electronic inverters is challenging grid protection. Due to the advanced inverter control algorithms, the inverter-based resources present fault responses different from conventional gene...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/12/4360 |
| _version_ | 1797487799294754816 |
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| author | Almir Ekic Di Wu John N. Jiang |
| author_facet | Almir Ekic Di Wu John N. Jiang |
| author_sort | Almir Ekic |
| collection | DOAJ |
| description | The growing penetration of renewable resources such as wind and solar into the electric power grid through power electronic inverters is challenging grid protection. Due to the advanced inverter control algorithms, the inverter-based resources present fault responses different from conventional generators, which can fundamentally affect the way that the power grid is protected. This paper studied solar inverter dynamics focused on negative-sequence quantities during the restoration period following a grid disturbance by using a real-time digital simulator. It was found that solar inverters can act as negative-sequence sources to inject negative-sequence currents into the grid during the restoration period. The negative-sequence current can be affected by different operating conditions such as the number of inverters in service, grid strength, and grid fault types. Such negative-sequence responses can adversely impact the performance of protection schemes based on negative-sequence components and potentially cause relay maloperations during the grid restoration period, thus making system protection less secure and reliable. |
| first_indexed | 2024-03-09T23:53:53Z |
| format | Article |
| id | doaj.art-c1a1051e05494a9f8ca373695839a0df |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T23:53:53Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c1a1051e05494a9f8ca373695839a0df2023-11-23T16:29:53ZengMDPI AGEnergies1996-10732022-06-011512436010.3390/en15124360Impact of Solar Inverter Dynamics during Grid Restoration Period on Protection Schemes Based on Negative-Sequence ComponentsAlmir Ekic0Di Wu1John N. Jiang2Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND 58105, USADepartment of Electrical and Computer Engineering, North Dakota State University, Fargo, ND 58105, USASchool of Electrical and Computer Engineering, University of Oklahoma, Norman, OK 73019, USAThe growing penetration of renewable resources such as wind and solar into the electric power grid through power electronic inverters is challenging grid protection. Due to the advanced inverter control algorithms, the inverter-based resources present fault responses different from conventional generators, which can fundamentally affect the way that the power grid is protected. This paper studied solar inverter dynamics focused on negative-sequence quantities during the restoration period following a grid disturbance by using a real-time digital simulator. It was found that solar inverters can act as negative-sequence sources to inject negative-sequence currents into the grid during the restoration period. The negative-sequence current can be affected by different operating conditions such as the number of inverters in service, grid strength, and grid fault types. Such negative-sequence responses can adversely impact the performance of protection schemes based on negative-sequence components and potentially cause relay maloperations during the grid restoration period, thus making system protection less secure and reliable.https://www.mdpi.com/1996-1073/15/12/4360inverter-based resourcessolar PVrelay protectionnegative-sequence |
| spellingShingle | Almir Ekic Di Wu John N. Jiang Impact of Solar Inverter Dynamics during Grid Restoration Period on Protection Schemes Based on Negative-Sequence Components Energies inverter-based resources solar PV relay protection negative-sequence |
| title | Impact of Solar Inverter Dynamics during Grid Restoration Period on Protection Schemes Based on Negative-Sequence Components |
| title_full | Impact of Solar Inverter Dynamics during Grid Restoration Period on Protection Schemes Based on Negative-Sequence Components |
| title_fullStr | Impact of Solar Inverter Dynamics during Grid Restoration Period on Protection Schemes Based on Negative-Sequence Components |
| title_full_unstemmed | Impact of Solar Inverter Dynamics during Grid Restoration Period on Protection Schemes Based on Negative-Sequence Components |
| title_short | Impact of Solar Inverter Dynamics during Grid Restoration Period on Protection Schemes Based on Negative-Sequence Components |
| title_sort | impact of solar inverter dynamics during grid restoration period on protection schemes based on negative sequence components |
| topic | inverter-based resources solar PV relay protection negative-sequence |
| url | https://www.mdpi.com/1996-1073/15/12/4360 |
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