PERFORMANCE INVESTIGATION OF POWER QUALITY IN DISTRIBUTED GENERATION SYSTEM FED SMART GRID USING DIFFERENT CONTROL STRATEGIES
power electronics in power grids (from mobile phones to smart power grids)
Due to increasing energy demand, to reduce carbon footprint, utilities are now forced to move on with Distributed Energy sources (DES) like solar Photo Voltaic cell , fuel cell, etc., to form Distributed Generation system (DGS) where DES is interconnected with conventional energy sources (CES) like thermal, hydro, and nuclear etc., with the help of Grid interfacing converters. Moreover, the usage of DES by customers is also increasing exponentially. Whenever the nonlinear load is being used by customer, power quality problem arises in the supply both in voltage and current profile unlike the non DGS supply where current profile gets affected. The problem is being alleviated by the harmonic resonance introduced by the capacitor banks in the network. In addition, the mal operation of converter is also leads to cause the trouble in the supply. To mitigate it, passive filter, active and hybrid filters are generally used whose successful operation requires proper control strategies. In this paper, novel control algorithm is explored for active filters to compensate the harmonics introduced by the customer and grid interfacing converters into the Grid. The Proposed control strategy combines both fuzzy and sliding mode control, which manages the injected filter current into the PCC proportional to harmonics distortion, resulting in improvement of power quality. A DGS system model has been first developed. The effect of nonlinear load is studied. Different control strategies are impl
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