Load profile based determination of distribution feeder configuration by dynamic programming

Abstract

Abstract--This paper presents a new method to determine feeder reconfiguration scheme considering variable load profile. The objective function consists of system losses, reliability costs and also switching costs. In order to achieve an optimal solution the proposed method compares these costs dynamically and determines when and how it is reasonable to have a switching operation. The proposed method divides a year into several equal time periods, then using particle swarm optimization (PSO), optimal candidate configurations for each period are obtained. System losses and customer interruption cost of each configuration during each period is also calculated. Then, considering switching cost from a configuration to another one, dynamic programming algorithm (DPA) is used to determine the annual reconfiguration scheme. Several test systems were used to validate the proposed method. The obtained results denote that to have an optimum solution it is necessary to compare operation costs dynamically.

Bi‐level service restoration strategy for active distribution system considering different types of energy supply sources

“…1 for supplied and 0 for unsupplied). is the average cost of energy losses depending on the L th type of customers, specifically the interruption price for one hour is assumed 8.552$/kW for commercial type, 9.085$/kW for industrial type, and 0.482$/kW for the residential type of loads [27].…”

“…unexpected or planned outage) [26]. To achieve a generalised solution, we used the average value in our calculations, based on the data and statistical information presented in [27].…”

Using feeder reconfiguration for congestion management of smart distribution network with high DG penetration

“…Network reconfiguration is to change the topological structure of distribution feeders by closing some normally opened switches and opening some normally closed switches instead of them. The network configuration should remain radial after the switching operations [7]. In many studies the reconfiguration operation has been used in normal conditions to improve system parameters such as loss, voltage profile and power balancing [8].…”