2009 International Conference on Power Systems, ICPS '09
This paper describes protection and control of a microgrid with converter interfaced micro sources. The proposed protection and control scheme consider both grid connected and autonomous operation of the microgrid. A protection scheme, capable of detecting faults effectively in both grid connected a...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Published: |
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2009
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| Online Access: | http://hdl.handle.net/20.500.11937/33355 |
| _version_ | 1848753922970222592 |
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| author | Dewadasa, M. Majumder, R. Ghosh, Arindam Ledwich, G. |
| author2 | - |
| author_facet | - Dewadasa, M. Majumder, R. Ghosh, Arindam Ledwich, G. |
| author_sort | Dewadasa, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper describes protection and control of a microgrid with converter interfaced micro sources. The proposed protection and control scheme consider both grid connected and autonomous operation of the microgrid. A protection scheme, capable of detecting faults effectively in both grid connected and islanded operations is proposed. The main challenge of the protection, due to current limiting state of the converters is overcome by using admittance relays. The relays operate according to the inverse time characteristic based on measured admittance of the line. The proposed scheme isolates the fault from both sides, while downstream side of the microgrid operates in islanding condition. Moreover faults can be detected in autonomous operation. In grid connected mode distributed generators (DG) supply the rated power while in absence of the grid, DGs share the entire power requirement proportional to rating based on output voltage angle droop control. The protection scheme ensures minimum load shedding with isolating the faulted network and DG control provides a smooth islanding and resynchronization operation. The efficacy of coordinated control and protection scheme has been validated through simulation for various operating conditions. |
| first_indexed | 2025-11-14T08:32:13Z |
| format | Conference Paper |
| id | curtin-20.500.11937-33355 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:32:13Z |
| publishDate | 2009 |
| publisher | - |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-333552017-02-28T01:51:20Z 2009 International Conference on Power Systems, ICPS '09 Dewadasa, M. Majumder, R. Ghosh, Arindam Ledwich, G. - This paper describes protection and control of a microgrid with converter interfaced micro sources. The proposed protection and control scheme consider both grid connected and autonomous operation of the microgrid. A protection scheme, capable of detecting faults effectively in both grid connected and islanded operations is proposed. The main challenge of the protection, due to current limiting state of the converters is overcome by using admittance relays. The relays operate according to the inverse time characteristic based on measured admittance of the line. The proposed scheme isolates the fault from both sides, while downstream side of the microgrid operates in islanding condition. Moreover faults can be detected in autonomous operation. In grid connected mode distributed generators (DG) supply the rated power while in absence of the grid, DGs share the entire power requirement proportional to rating based on output voltage angle droop control. The protection scheme ensures minimum load shedding with isolating the faulted network and DG control provides a smooth islanding and resynchronization operation. The efficacy of coordinated control and protection scheme has been validated through simulation for various operating conditions. 2009 Conference Paper http://hdl.handle.net/20.500.11937/33355 - restricted |
| spellingShingle | Dewadasa, M. Majumder, R. Ghosh, Arindam Ledwich, G. 2009 International Conference on Power Systems, ICPS '09 |
| title | 2009 International Conference on Power Systems, ICPS '09 |
| title_full | 2009 International Conference on Power Systems, ICPS '09 |
| title_fullStr | 2009 International Conference on Power Systems, ICPS '09 |
| title_full_unstemmed | 2009 International Conference on Power Systems, ICPS '09 |
| title_short | 2009 International Conference on Power Systems, ICPS '09 |
| title_sort | 2009 international conference on power systems, icps '09 |
| url | http://hdl.handle.net/20.500.11937/33355 |