Power Loss Reduction and Voltage Profile Improvement Using Optimal Placement of Distributed Generation and DSTATCOM in Radial Distribution System (Case study: Adama Substation II)

Abstract

The electric power system network comprises distribution, transmission, and generation components. The distribution system connects high-voltage transmission networks with the end users. Power plants are often located far from consumers. This leads to a significant power loss in both transmission and distribution systems. Since, the distribution system has a low X/R ratio and operates at low voltage, losses in the distribution system are typically greater than losses in the transmission system. The main objective of this work is voltage profile enhancement and minimization of power losses by integrating Distributed Generation (DG) and Distribution Static Synchronous Compensator (DSTATCOM) to Adama substation II feeder L2. Adama substation II feeder L2 is selected due to its high power demand, high permanent overload power interruption, and cover large areas. DG and DSTATCOM devices have been designed and integrated into the Adama substation II feeder L2. This integration has resulted in an enhanced voltage profile and reduced power loss in the distribution system. In this work, the Direct Load Flow (DLF) technique was employed to calculate the load flow. Particle Swarm Optimization (PSO) algorithm was employed to determine the optimal place and size of DG and DSTATCOM devices. The proposed systems were analyzed and simulated using the MATLAB simulation tool. The performance of the distribution system was evaluated under different cases: base case, with DG only, and with both DG and DSTATCOM. The Integration of three DG and one DSTATCOM into the system enhances the minimum voltage profile from 0.75141 to 0.9544 and reduces the active and reactive power losses by 84.67% and 83.09%, respectively. Finally, the study analyzes the economic viability of DG and DSTATCOM integration, considering investment costs and payback period. The findings suggest that installing these devices is a cost-effective solution for enhancing the voltage profile and reducing the power loss of the distribution system.