Modified P-Q technique to mitigate power quality problems in distribution system

The use of nonlinear loads and power electronics switches are increasing day by day and causing so many problems like, harmonics pollution, reactive power demand, low power factor etc. These problems are mitigated through Shunt Active Power Filter (SAPF) but the system robustness is depending on the control algorithm. In this article the Modified P-Q theory is implemented to mitigate power quality problems in distribution system and the results are compared with the existing SRF theory to prove the robustness of the controller. The designed active power filter compensates reactive power, current harmonic from distribution system with maintaining power factor near to unity and also reduces the burden of neutral conductor effectively with balanced source current through Modified P-Q theory over SRF theory.