With the increasing penetration of renewable energies as distributed generation (DG) in smart grid scheme, technical problems arise in both distribution and transmission system level. Undesirable voltage is the main problem for connection of DG

In distribution systems, the load has been a sudden increase or decreases and it is like as nonlinear loads so the load draw non-sinusoidal currents the AC mains and causes the load harmonics and reactive power, and excessive neutral currents