Study of the Dynamic Behavior of a DSTATCOM Installed in a Distribution Network in Case of Single and Multiphase Short Circuit

Abstract

This paper investigated the behavior of a DSTATCOM in the face of contingencies that may arise in an electrical power distribution network. It shows that DSTATCOM is an effective attenuator to limit the impacts of perturbations on the distribution network. The model equations are simulated in a MATLAB environment and have shown that the exactitude of the network parameters is a key determinant of the resilience of a disrupted distribution network in the presence of an optimally positioned DSTATCOM at a node. The capacitive current of the DSTATCOM increases inversely with a bad power factor and a critical voltage drop. The DSTATCOM in a network is therefore more solicited when the operating parameters of this network degrade as a result of single-phase or multiphase short circuits. Distribution system operators must therefore design protection plans that truly and sustainably limit the impacts of short circuits on distribution systems.