Modeling and Analysis of STATCOM for Renewable Energy Farm to Improve Power Quality and Reactive Power Compensation

Maria Tariq,Hina Zaheer,Tahir Mahmood

doi:10.3390/engproc2021012044

Maria Tariq, Hina Zaheer + Show 1 more

Open Access

https://doi.org/10.3390/engproc2021012044

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Publication Date: Dec 28, 2021
Citations: 3	License type: CC BY 4.0

Affiliation: University of Engineering and Technology Taxila

Abstract

Power Quality (PQ) improvement in grid-integrated photovoltaic (PV) and wind energy hybrid systems for effective power transfer is presented in this paper. Due to interlinked hybrid renewable energy resources and nonlinear loads, various issues arise which affect the power quality, i.e., voltage sag, harmonic distortion increases, and also reactive power demand. In order to mitigate these issues, flexible alternating current transmission system (FACTS) devices are utilized. In this paper, hysteresis band current controller (HBCC)-based static synchronous compensator (STATCOM) is modeled to reduce PQ problems. HBCC is a robust and simple technique to improve voltage profile, reduce total harmonic distortion (THD) and fulfill the reactive power demand. Two case scenarios of the hybrid system, i.e., (I) grid integrated hybrid system without HBCC (II) grid integrated hybrid system with HBCC, are tested. Results demonstrate that under scenario II, load bus voltage is regulated at 1.0 p.u., THD of system voltage and current is reduced 0.25% and 0.35%, respectively, and reactive power demand of 30 kVAR is fulfilled. The HBCC was designed for reducing THD of the system with the limits specified by standards IEEE 519-1992 STATCOM using hysteresis band current controller to improve power quality in the distribution system which is simulated using MATLAB/SIMULINK. After that, the performance of the system is better in terms of power quality.

Highlights

The increasing power demand causes a utility burden due to urbanization, industrialization, and rising living standards
This model consists of a three-phase voltage source with the rating of 400 V connected to a three-phase load of 1 kW and 1 kVAR
A STATCOM-based control technique named hysteresis band current control is presented in this work

Summary

Introduction

The increasing power demand causes a utility burden due to urbanization, industrialization, and rising living standards. Traditional power sources are inadequate to meet global power demand, posing electricity stability and security challenges, while massive amounts of pollutants pose major environmental concerns [1,2]. Renewable and distributed energy resources (DER) have arisen by way of replacing traditional energy resources during the last couple of decades, and utility engineers consider them a viable solution for meeting load demand while effectively addressing power problems [3,4]. The latest development in the renewable energy system is Hybrid Renewable Energy Systems (HRES) based Distributed Generation (DG), which has proved to achieve high performance and dependability [5]. Wind and solar energy sources are being used effectively in various hybrid systems, amongst all developed renewable energy resources.

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