Fragmented Load Shedding-based Congestion Management Strategy for Cyber-Physical-Social Distribution Networks

Due to the increasing trend of electric energy demand every year around the world and the lack of replacement or increase of electricity distribution lines, the probability of congestion in modern networks has increased. Despite the expansion of modern congestion management methods, load shedding is still one of the best options for congestion relief in some networks when necessary. In this article, we have used a model based on piecewise linear approximations in order to perform the congestion with minimum interruption cost, and to interrupt the least number of loads, which causes the congestion to be divided into smaller intervals that will be interrupted as many times as the network overload in each interval. The selected test network is the modified IEEE 33 bus radial system, which is simulated in the DigSilent power factory environment, and the optimizations are performed in GAMS software in three steps with a mixed integer quadratically constrained programming (MIQCP) approach.