Implementation of control schemes on DSTATCOM to enhance power quality
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Date
2022-02
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G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145
Abstract
Power quality issues have always been existing in the distribution system but nowadays these have become prevalent due to the increased use of power electronicsbased equipment for commercial and domestic purposes like computers, LCD/LED TVs, various lighting systems and electric drives, and domestic loads along with switched-mode power supplies, etc. which injects harmonic currents into the supply system and deteriorate the power quality. Power quality measures like power factor correction, voltage regulation, load balancing, and harmonic elimination can be maintained and fixed using Distribution Static Compensator (DSTATCOM). In the proposed work, a detailed comparative study of four different effective control strategies for DSTATCOM to target reactive power compensation and Total Harmonic Distortion (THD). The results are demonstrated in detail using simulation performed in MATLAB-SIMULINK software which shows the good capability of four different control algorithms to provide good power quality for the electrical systems. The principal goal of any compensation process is to have a fast response, flexibility and should be easy to implement. The result’s approval is based on the Grid standards of Central Electricity Authority of India Regulations. The basic idea is to study the power quality issues and their best possible solutions. To achieve this goal four different control strategies for the comparative study viz.; Least Logarithmic Absolute Difference (LLAD), Synchronous Reference Frame Theory (SRF), Least Mean Logarithmic Square (LMLS), and ADALINE based LMS method to achieve power factor correction and THD reduction in the system according to the Indian Grid Standards. So that same DSTATCOM can be used to deal with the power quality issues in different situations with nonlinear loads in the fragile environments of electricity grids. All results have been interpreted through the simulations that have been performed in MATLABSIMULINK (SimPowerSystem) & a comparison is made to show the effectiveness of the different implemented control algorithms.