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Enhancing Electric Power Quality in Distribution System with STATCOM

Author(s):

Chapala Shravani , CVR College of Engineering, Hyderabad

Keywords:

DSTATCOM, Power Quality, PWM, Reactive power compensation, Voltage Sag, Voltage Swell

Abstract

In addition to the increase in the types and capacities of electrical loads, problems with the quality of power, in particular reactive power and harmonics, are the serious threats to the safe operation of the network. Linear / non-linear loads are one of the main causes of deterioration in the quality of energy in transmission lines. High non-linearity and time-varying operation cause harmonic distortion and voltage fluctuations. As an important member of FACT, the distributed synchronous static compensator (DSTATCOM) is widely used as an advanced dynamic bypass compensator to control reactive power in transmission and distribution systems. Utilities such as households, businesses and industries face many PQ problems in the form of voltage dips, increases and fluctuations or fluctuations in voltage. This paper describes the implementation of a distributed static compensator (DSTATCOM) using a PWM-based control algorithm for harmonic rejection. This custom power devices used to estimate and mitigate voltage sag, swell, voltage fluctuations, and reactive power limits for various utility load conditions. D-STATCOM has been adopted as a compensation device because it is known for its flexibility, easy implementation, dynamic load compensation and multifunctional operation. The D-STATCOM model is shunted with a three-phase source which provides a constant and variable load developed using Simulink. The simulated results show that D-STATCOM can be considered as a viable solution to solve the problems of voltage dips, swelling and variation. A control algorithm based on PWM control is used to extract the basic active and reactive power components from the load current to derive the reference compensation current through STATCOM. The performance of the three-phase three - phase system using DSTATCOM was checked for harmonic rejection using a MATLAB / SIMULINK simulation model.

Other Details

Paper ID: IJSRDV8I10887
Published in: Volume : 8, Issue : 1
Publication Date: 01/04/2020
Page(s): 1103-1108

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