Microgrids interconnection to support mutually during any contingency
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This paper discusses how two islanded microgrids, when connected together, can support each other during contingencies. Nominally, each microgrid supplies local loads connected to it. However, during any overloading in one of the microgrids, the other supplies power to support it, if possible. The microgrids are interconnected through a back to back converter so that each of them can operate independently. The power exchange through these converters takes place only when there is a shortfall in one of the microgrids. In this paper, it is shown how such a collaborative scheme can work satisfactorily. Some important strategies, such as overload detection and excess power calculation are required for this type of interconnection and are proposed in this paper. The proposals are validated through extensive PSCAD/EMTDC simulation studies.
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Shahnia, Farhad; Chandrasensa, Ruwan; Rajakaruna, Sumedha; Ghosh, A. (2014)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 ...
Shahnia, Farhad; Chandrasensa, Ruwan; Rajakaruna, Sumedha; Ghosh, Arindam (2013)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 ...
Susanto, Julius; Shahnia, Farhad; Ghosh, Arindam; Rajakaruna, Sumedha (2014)This paper presents the back-to-back interconnection of two autonomous microgrids. A back-to-back converter topology, referred to as an interchange converter, is used to provide dynamic frequency support for each autonomous ...