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Autonomous operation of multiple interconnected microgrids with self-healing capability

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Authors
Shahnia, Farhad
Chandrasensa, Ruwan
Rajakaruna, Sumedha
Ghosh, Arindam
Date
2013
Type
Conference Paper

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Shahnia, Farhad and Chandrasensa, Ruwan P.S. and Rajakaruna, Sumedha and Ghosh, Arindam. 2013. Autonomous operation of multiple interconnected microgrids with self-healing capability, in Proceedings of the IEEE Power and Energy Society General Meeting, Jul 21-25 2013, pp. 1-5. Vancouver, Canada: IEEE.
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Proceedings of the 2013 IEEE Power and Energy Society General Meeting
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2013 IEEE Power and Energy Society General Meeting
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Abstract

This paper shows how multiple interconnected microgrids can operate in autonomous mode in a self-healing medium voltage network. This is possible if based on network self-healing capability, the neighbor microgrids are interconnected and a surplus generation capacity is available in some of the Distributed Energy Resources (DERs) of the interconnected microgrids. This will reduce or prevent load shedding within the microgrids with less generation capacity. Therefore, DERs in a microgrid are controlled such that they share the local load within that microgrid as well as the loads in other interconnected microgrids. Different control algorithms are proposed to manage the DERs at different operating conditions. On the other hand, a Distribution Static Compensator (DSTATCOM) is employed to regulate the voltage. The efficacy of the proposed power control, sharing and management among DERs in multiple interconnected microgrids is validated through extensive simulation studies using PSCAD/EMTDC.