A study on optimal locations and sizes of active filters as an additional function of distributed generation systems

We investigate the reduction in harmonics using a distributed generation system. In this study, we assume that the inverter of the distributed generation system also acts as an active filter. We propose a method to determine the optimal locations and sizes of the active filters as a tool to evaluate the effect on reduction in harmonics. In this method, the problem is formulated as a combinatorial optimization problem and solved using reactive tabu search, a combinatorial optimization method. The simulation results show that a considerable effect can be achieved if the distributed generation system with active filter works effectively.