Optimal Location of DSTATCOM Considering Different Load Models Using Bat Algorithm

Distribution Static Compensator (DSTATCOM) is widely applied in mitigating common power quality problems. Optimal sizing and placement of this compensator is a critical aspect that ensures that power quality problems are mitigated with minimal losses. Bat Algorithm (BA) is chosen to optimize the size and location of DSTATCOM with the aim of minimizing power losses and improving voltage profile. Optimal allocation of DSTATCOM is obtained for both Constant Power (CP) and Constant Current (CI) load models. The success of the optimization algorithm is tested in IEEE-118 bus system. Under the proposed method, when optimally placed single DSTATCOM and optimally placed three DSTATCOMs are used, real power losses are reduced by 22% and 24% respectively for CP load model. For CI load model, when optimally placed single DSTATCOM and optimally placed three DSTATCOMs are used, real power losses are reduced by 18% and 21% respectively.