Abstract
Switching of loads, capacitors, along with the proliferation of power electronics equipment, non-linear loads in industrial, commercial and domestic applications have lead to power quality issues in the distribution system. Power quality issues such as voltage sag, voltage swell and harmonics, which are certainly major concerning issues in the present era. These issues can lead to failure or malfunction of the many sensitive loads connected to the distribution system, thus incurring a high cost for end users. Power quality problems are solved by advanced custom power devices. This study presents how the custom power device Distribution Static Compensator (D-STATCOM) is used to mitigate voltage sag and voltage harmonics in distribution system. Artificial Neural Network (ANN) controller based D-STATCOM is simulated in MATLAB-SIMULINK environment. Prototype model for single phase D-STATCOM is developed to verify the results. The simulation and hardware results show clearly the performance of the D-STATCOM in mitigating voltage sag and voltage harmonics in distribution system.
Highlights
Voltage sag and voltage harmonics are the most important Power Quality (PQ) problems that many industries and utilities face it
This study presents how the custom power device Distribution Static Compensator (D-STATCOM) is used to mitigate voltage sag and voltage harmonics in distribution system
Artificial Neural Network (ANN) controller based D-STATCOM is simulated in MATLAB-SIMULINK environment
Summary
Voltage sag and voltage harmonics are the most important Power Quality (PQ) problems that many industries and utilities face it. The DSTATCOM has emerged as a promising device to provide voltage sag mitigation and harmonic control (Hosseini et al, 2011). The Voltage Source Converter (VSC) converts the dc voltage into a set of three-phase ac output voltage across the energy storage device. Output voltage from VSC is in phase and connected with the distribution System using the coupling transformer (Hosseini et al, 2011). Fuzzy-PI direct output voltage control strategy is presented to mitigate voltage sag in utility distribution system (Luo et al, 2009a; 2009b). This study will investigate the capability of the ANN controller based D-STATCOM on mitigation of voltage sag and voltage harmonics
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