Abstract

The increasing demand of the load causes the voltage imbalance and increase in power loss. This is forcing the distribution companies to take the proper actions in the planning of distribution system. The allocation of Renewable Energy Source (RES) and Distribution Static Compensator (DSTATCOM) are considered in the distribution system planning to reduce the losses and maintain the voltage of the system within the required limit with the growing load demand. Due to the environmental concerns, the RES is becoming the must to consider as a part of the power system whereas the use of DSTATCOM is for the reactive power compensation to improve the power quality and the voltage profile. For the simultaneous allocation of RES and DSTATCOM in balanced Radial Distribution System (RDS), Loss Sensitivity Factor (LSF) used to get the candidate buses and Particle Swarm optimization (PSO) algorithm is used for optimal sizes. For the calculation of load flow of the system an efficient Backward-Forward Sweep Load Flow Algorithm is used. The objective of the proposed methodology is to minimize the total cost which is the sum of total investment cost of RES and DSTATCOM, power purchase cost and pollution emission cost, keeping the voltage of each bus of the system within the limit. From the result obtained for the 38-bus balanced radial distribution system (RDS), it is clearly observed that the total active and reactive power losses are reduced and voltages of the system is improved with the optimal allocation of RES and DSTATCOM at minimum cost.

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