Plan and Implementation of Flexible D-Statcom for Mitigating Power Quality Problems and Improve the Distribution System Performance

Abstract

This paper gives a detailed information about flexible D-STATCOM, which is used to mitigate and reduces all types of faults and operate as a Distributed Generation. When the main source is disconnected it supplies power to sensitive loads and doesn"t interrupt the supply power to the loads. Thus D-STATCOM operates same as a flexible D-STATCOM and hence is known as Flexible D-STATCOM. The performance of Flexible D-STATCOM system is 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 and DLG faults under islanding condition. 12-pulse D-STATCOM configuration is utilized with IGBT which is designed and is used in determining the graphical representation of the D-STATCOM using the software PSCAD/EMTDC electromagnetic transient simulation program. The reliability and robustness of the control schemes in the system is determined by the voltage disturbances occurred by Line to line and double line to ground faults and islanded operating condition are thus verified in the results obtained in simulation.