Dynamic performance of Dstatcom used for voltage regulation in distribution system

The impact of Dstatcom size and location on the voltage regulation of a distribution system is investigated in this research work. Possibility of coordination between Dstatcom units at different locations in the system is investigated. Dstatcom model available in Matlab Simulink is adopted for the study. The dynamic behavior of the Dstatcom due to switching on a large industrial load, line outage and voltage sag are presented. Effect of Dstatcom size on the extent of sag mitigation is monitored. This study is conducted on the IEEE 14 bus system (69 KV/13.8kv) without any compensation. The results show the effectiveness of using the Dstatcom on the system voltage regulation during normal operating conditions as well as in cases when the system is subjected to abnormal conditions. System improved performance is depicted.