Interconnected autonomous microgrids in smart grids with self-healing capability
In order to minimize the number of load shedding in a Microgrid during autonomous operation, islanded neighbour microgrids can be interconnected if they are on a self-healing network and an extra generation capacity is available in Distributed Energy Resources (DER) in one of the microgrids. In this...
| Main Authors: | , , , |
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| Format: | Book Chapter |
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Springer
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/15698 |
| _version_ | 1848748964726177792 |
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| author | Shahnia, Farhad Chandrasensa, Ruwan Rajakaruna, Sumedha Ghosh, A. |
| author2 | Hossain |
| author_facet | Hossain Shahnia, Farhad Chandrasensa, Ruwan Rajakaruna, Sumedha Ghosh, A. |
| author_sort | Shahnia, Farhad |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In order to minimize the number of load shedding in a Microgrid during autonomous operation, islanded neighbour microgrids can be interconnected if they are on a self-healing network and an extra generation capacity is available in Distributed Energy Resources (DER) in one of the microgrids. In this way, the total load in the system of interconnected microgrids can be shared by all the DERs within these microgrids. However, for this purpose, carefully designed selfhealing and supply restoration control algorithm, protection systems and communication infrastructure are required at the network and microgrid levels. In this chapter, first a hierarchical control structure is discussed for interconnecting theneighbour autonomous microgrids where the introduced primary control level is the main focus. Through the developed primary control level, it demonstrates how the parallel DERs in the system of multiple interconnected autonomous microgrids can properly share the load in the system. This controller is designed such that the converter-interfaced DERs operate in a voltage-controlled mode following adecentralized power sharing algorithm based on droop control. The switching in the converters is controlled using a linear quadratic regulator based state feedback which is more stable than conventional proportional integrator controllers and this prevents instability among parallel DERs when two microgrids are interconnected. The efficacy of the primary control level of DERs in the system of multiple interconnected autonomous microgrids is validated through simulations consideringdetailed dynamic models of DERs and converters. |
| first_indexed | 2025-11-14T07:13:25Z |
| format | Book Chapter |
| id | curtin-20.500.11937-15698 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:13:25Z |
| publishDate | 2014 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-156982023-02-13T08:01:37Z Interconnected autonomous microgrids in smart grids with self-healing capability Shahnia, Farhad Chandrasensa, Ruwan Rajakaruna, Sumedha Ghosh, A. Hossain Jahangir Mahmud Apel DER Interconnected microgrids DSTATCOM Self-healing network Power sharing In order to minimize the number of load shedding in a Microgrid during autonomous operation, islanded neighbour microgrids can be interconnected if they are on a self-healing network and an extra generation capacity is available in Distributed Energy Resources (DER) in one of the microgrids. In this way, the total load in the system of interconnected microgrids can be shared by all the DERs within these microgrids. However, for this purpose, carefully designed selfhealing and supply restoration control algorithm, protection systems and communication infrastructure are required at the network and microgrid levels. In this chapter, first a hierarchical control structure is discussed for interconnecting theneighbour autonomous microgrids where the introduced primary control level is the main focus. Through the developed primary control level, it demonstrates how the parallel DERs in the system of multiple interconnected autonomous microgrids can properly share the load in the system. This controller is designed such that the converter-interfaced DERs operate in a voltage-controlled mode following adecentralized power sharing algorithm based on droop control. The switching in the converters is controlled using a linear quadratic regulator based state feedback which is more stable than conventional proportional integrator controllers and this prevents instability among parallel DERs when two microgrids are interconnected. The efficacy of the primary control level of DERs in the system of multiple interconnected autonomous microgrids is validated through simulations consideringdetailed dynamic models of DERs and converters. 2014 Book Chapter http://hdl.handle.net/20.500.11937/15698 10.1007/978-981-4585-27-9_15 Springer restricted |
| spellingShingle | DER Interconnected microgrids DSTATCOM Self-healing network Power sharing Shahnia, Farhad Chandrasensa, Ruwan Rajakaruna, Sumedha Ghosh, A. Interconnected autonomous microgrids in smart grids with self-healing capability |
| title | Interconnected autonomous microgrids in smart grids with self-healing capability |
| title_full | Interconnected autonomous microgrids in smart grids with self-healing capability |
| title_fullStr | Interconnected autonomous microgrids in smart grids with self-healing capability |
| title_full_unstemmed | Interconnected autonomous microgrids in smart grids with self-healing capability |
| title_short | Interconnected autonomous microgrids in smart grids with self-healing capability |
| title_sort | interconnected autonomous microgrids in smart grids with self-healing capability |
| topic | DER Interconnected microgrids DSTATCOM Self-healing network Power sharing |
| url | http://hdl.handle.net/20.500.11937/15698 |