Optimal Siting and Sizing of D-STATCOM in Distribution System using New Voltage Stability Index and Bat Algorithm

Distribution Static Compensators (DSTATCOMs) are one of the cheapest advanced devices used for reactive compensation for efficient operation of electrical distribution systems. However, the size of these DSTATCOMs and their placement location are significant issues that have to be considered to derive maximum benefits from their installation. To find its appropriate site and size, this study proposes the application of New Voltage Stability Index (NVSI) for its siting and Bat Algorithm (BA) for its sizing with the aim of minimization of the total loss in the distribution networks. The proposed method is implemented on IEEE 33 bus and a Nigerian Ayepe 34-bus system. The results obtained indicate the effectiveness and viability of the technique in significantly reducing the total power losses and improving of the voltage profile of the system.