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Abstract: The paper presents a networked microgrid system, where droop-based frequency regulation has been implemented on PQ control of inverters. During transition from grid mode to islanding mode, the networked microgrid faces extreme disturbances, which requires proper sharing within the network. In this paper, a networked microgrid topology is analysed, where power sharing occurs through the dc network. Moreover, proposed controller activates a droop sharing strategy, which identifies required active power for frequency regulation before entering to islanding stages. However, during power sharing case, microgrid capable of extracting additional power uses the droop control, while other network inverter utilizes dc link voltage, resulting calculation of overall reference inverter current for proper sharing. Furthermore, the controller co-ordinates between different microgrids based on the reference current to enhance the resilience of the network. The effectiveness of the illustrated control is unique, as the power sharing occurs via dc grid, thus, it has been tested on PSCAD with test cases.

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