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Creators/Authors contains: "Chaudhuri, Nilanjan_Ray"

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  1. An innovative system restoration strategy using doubly‐fed induction generator‐based wind farms is proposed. The strategy involves retention of charge in the DC bus following a blackout and ‘Hot‐Swapping’ between direct flux control mode and conventional grid‐connected mode, which does not require resetting of any controller dynamic states and avoids the need for energy storage. An autonomous synchronisation mechanism enabled by remote synchrophasors is also proposed. A blacked‐out system, which includes a wind farm and a voltage source converter (VSC)‐HVDC connected to a network unaffected by blackout, is used as the study system. Transmission line charging and load pickup is performed using the wind farm in flux control mode while the VSC‐HVDC system conducts the same process for another portion of the system. The proposed ‘Hot‐Swapping’ and autonomous synchronisation approach is applied to connect the two parts of the grid and switch the wind farm to grid connected mode of operation. The results are demonstrated in a hybrid co‐simulation platform where the aforementioned system is modelled in EMT‐type software and the rest of the network is represented in a phasor framework. 
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