Steady-State Performance of D-STATCOM for Load Voltage Regulation

This paper presents the steady state performance of a D-STATCOM applied for load voltage regulation by injecting only reactive power into the system. This study begins with determining dynamic equations of the distribution system with the installed D- STATCOM. The dynamic equations are determined with reference to the synchronous rotating dq reference frame transformation theory. Then, the steady state equations are derived from the dynamic equations. The amount of apparent power of D-STATCOM for load voltage regulation in case of increased load power is considered. Additionally, the maximum load power that can regulate the load voltage magnitude without injecting any active power into the system is also determined.