Harmonic Mitigation on a 33kV Distribution Line using Passive Filters
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Date
2015-09-01
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IEEE-Africa
Abstract
The use of modern power electronic devices in circuits has made ‘power quality’ an increasingly important factor in the planning of both transmission and distribution systems. These devices are nonlinear loads such as office equipment like Central Processing Units (CPU), Plotters, etc., and most electronic home appliances such as Television, Video players, etc., that generate distorted harmonic currents and voltages, which get injected into the power system and leads to ineffective operation of the system. The Harmonic mitigation scheme is therefore imperative in the design and planning of a power system network. Consequently, this paper presents the control of harmonics in a 33kV Distribution line by using passive filters – a case of RLC and LC filters in both single and cascaded configurations were examined in order to study the net effects of their application in a distribution line. It involves the use of the distribution line (case study) results obtained from previous studies on power flow and harmonic analysis of the overall network that contains the distribution line of the case study. These results serve as source data for this research. Only a distribution line of the network was used as a test case. The harmonic mitigation analysis was carried out using MATLAB/Simulink platform. The simulation results of mitigation harmonics are presented. Conclusions and necessary recommendations for future research are also discussed.