Improvement of power quality in distribution network using a novel DSTATCOM device

Abstract

This paper proposes a novel custom power device based on distribution static compensator (DSTATCOM) with PID controller driven by the unified error signal (UES) from a multi loop dynamic error controller scheme. Both DSTATCOM and UES are modified to meet the requirements for voltage stabilization, voltage waveform disturbance compensation and power factor improvement. A complete simulation model of the proposed system is developed in Matlab/Simulink Environment. The system is simulated with different control strategies under different operating conditions for comparison. The controllers and the control strategies are developed to have the novel DSTATCOM be operated for voltage stabilization, power factor improvement, energy losses reduction, power quality, and less harmonics distortion. The operational characteristics of a power system, supplying electrical power to hybrid loads consisting of linear and nonlinear and motorized loads, are investigated for better performance and higher power quality employing the proposed DSTATCOM and UES driven controllers.