Voltage unbalance reduction by distribution static compensator in a case study network

This paper proposes a new control method for Distribution STATic COMpensator (D-STATCOM) in IEEE 13-bus industrial distribution network. Operating this proposed control method enables D-STATCOM to mitigate all types of fault. This paper validates the performance of D-STATCOM system to mitigate power quality problems and improve distribution system performance under all types of system related disturbances and system unbalanced faults, such as Line to Line (LL), Double Lines to Ground (DLG) faults and simultaneous fault. In this paper, the 12-pulse D-STATCOM configuration with IGBT is designed and the graphic based models of the D-STATCOM are developed using the PSCAD/EMTDC electromagnetic transient simulation program. As a case study, a 13-bus IEEE industrial distribution network is simulated to verify operation of proposed D-STATCOM. The reliability and robustness of the control schemes in the system response to the voltage disturbances caused by LL, DLG and simultaneous faults are obviously proved in the simulation results.