Research Specifications

This paper proposes a stochastic multistage expansion planning method in order to solve the mid and long-term optimal feeder routing problem. Pseudo dynamic behavior of the network parameters and geographical constraints besides the associated uncertainties of future load demand and market price are incorporated into the method. The proposed method is solved from the DisCo viewpoints using Particle Swarm Optimization algorithm which finally converges to a solution with minimum costs. The proposed cost function is the sum of feeder’s installation costs, power losses cost, cost of active purchased power from power market and reliability costs. Meanwhile, the final solution must satisfy all the operation aspects of power system in acceptable levels. On the other hand, the implementation of the final strategy obtained from the proposed method of this paper, can increase the responsibility of the power system in lower costs. In this regards, distribution system can power its customers with higher power quality in acceptable reliability level and also in lower costs. The proposed method is applied on a large-scale distribution network and its practicability and also its effectiveness are analyzed due to the simulation results.