A Novel Protection Method for Single Line-to-Ground Faults in Ungrounded Low-Inertia Microgrids
This paper proposes a novel protection method for single line-to-ground (SLG) faults in ungrounded low-inertia microgrids. The proposed method includes microgrid interface protection and unit protection. The microgrid interface protection is based on the difference between the zero-sequence voltage...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-06-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/9/6/459 |
| _version_ | 1811298771563184128 |
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| author | Liuming Jing Dae-Hee Son Sang-Hee Kang Soon-Ryul Nam |
| author_facet | Liuming Jing Dae-Hee Son Sang-Hee Kang Soon-Ryul Nam |
| author_sort | Liuming Jing |
| collection | DOAJ |
| description | This paper proposes a novel protection method for single line-to-ground (SLG) faults in ungrounded low-inertia microgrids. The proposed method includes microgrid interface protection and unit protection. The microgrid interface protection is based on the difference between the zero-sequence voltage angle and the zero-sequence current angle at the microgrid interconnection transformer for fast selection of the faulty feeder. The microgrid unit protection is based on a comparison of the three zero-sequence current phase directions at each junction point of load or distributed energy resources. Methods are also included to locate the minimum fault section. The fault section location technology operates according to the coordination of microgrid unit protection. The proposed method responds to SLG faults that may occur in both the grid and the microgrid. Simulations of an ungrounded low-inertia microgrid with a relay model were carried out using Power System Computer Aided Design (PSCAD)/Electromagnetic Transients including DC (EMTDC). |
| first_indexed | 2024-04-13T06:25:14Z |
| format | Article |
| id | doaj.art-1e4a8976f64c48a3ba8ebf535104dfae |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T06:25:14Z |
| publishDate | 2016-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-1e4a8976f64c48a3ba8ebf535104dfae2022-12-22T02:58:27ZengMDPI AGEnergies1996-10732016-06-019645910.3390/en9060459en9060459A Novel Protection Method for Single Line-to-Ground Faults in Ungrounded Low-Inertia MicrogridsLiuming Jing0Dae-Hee Son1Sang-Hee Kang2Soon-Ryul Nam3Department of Electrical Engineering, Myongji University, Yongin 449-728, KoreaDepartment of Electrical Engineering, Myongji University, Yongin 449-728, KoreaDepartment of Electrical Engineering, Myongji University, Yongin 449-728, KoreaDepartment of Electrical Engineering, Myongji University, Yongin 449-728, KoreaThis paper proposes a novel protection method for single line-to-ground (SLG) faults in ungrounded low-inertia microgrids. The proposed method includes microgrid interface protection and unit protection. The microgrid interface protection is based on the difference between the zero-sequence voltage angle and the zero-sequence current angle at the microgrid interconnection transformer for fast selection of the faulty feeder. The microgrid unit protection is based on a comparison of the three zero-sequence current phase directions at each junction point of load or distributed energy resources. Methods are also included to locate the minimum fault section. The fault section location technology operates according to the coordination of microgrid unit protection. The proposed method responds to SLG faults that may occur in both the grid and the microgrid. Simulations of an ungrounded low-inertia microgrid with a relay model were carried out using Power System Computer Aided Design (PSCAD)/Electromagnetic Transients including DC (EMTDC).http://www.mdpi.com/1996-1073/9/6/459distributed energy resourcesmicrogrid protectionsingle line-to-ground (SLG) faultungrounded low-inertia microgrid |
| spellingShingle | Liuming Jing Dae-Hee Son Sang-Hee Kang Soon-Ryul Nam A Novel Protection Method for Single Line-to-Ground Faults in Ungrounded Low-Inertia Microgrids Energies distributed energy resources microgrid protection single line-to-ground (SLG) fault ungrounded low-inertia microgrid |
| title | A Novel Protection Method for Single Line-to-Ground Faults in Ungrounded Low-Inertia Microgrids |
| title_full | A Novel Protection Method for Single Line-to-Ground Faults in Ungrounded Low-Inertia Microgrids |
| title_fullStr | A Novel Protection Method for Single Line-to-Ground Faults in Ungrounded Low-Inertia Microgrids |
| title_full_unstemmed | A Novel Protection Method for Single Line-to-Ground Faults in Ungrounded Low-Inertia Microgrids |
| title_short | A Novel Protection Method for Single Line-to-Ground Faults in Ungrounded Low-Inertia Microgrids |
| title_sort | novel protection method for single line to ground faults in ungrounded low inertia microgrids |
| topic | distributed energy resources microgrid protection single line-to-ground (SLG) fault ungrounded low-inertia microgrid |
| url | http://www.mdpi.com/1996-1073/9/6/459 |
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