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Title: Investigating the harmonic distortion in distribution systems
Author: Farooq, Haroon
ISNI:       0000 0004 2735 0369
Awarding Body: Glasgow Caledonian University
Current Institution: Glasgow Caledonian University
Date of Award: 2012
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Newer technologies like Electric Vehicles (EVs) and Distributed Generation (DG) are being viewed as potential harmonic distortion threats for the distribution systems which are already facing increased harmonic stress due to the increased use of the non-linear home appliances in the recent years. Therefore, it is necessary to evaluate and analyze the harmonic distortion due to the various non-linear home appliances, EV battery chargers and DG inverters to give a clear picture of the future scenario. So that future technologies can be accommodated in the distribution systems while the existing harmonic distortion threats are dealt with. This research work investigates the harmonic spectrums of various non-linear residential loads, battery chargers and DG inverters which are then deployed to perform various simulations of the distribution systems, using Electrical Transient Analyzer Program (ET AP), considering several different scenarios. A high penetration level of non-linear residential loads is considered to simulate the current scenario. The results show high level of harmonic distortion at the Point of Common Coupling (PCC). The investigation is then extended to simulate the future scenarios by considering advent of the EV s and DG. The results indicate a significant increase in the Total Harmonic Distortion in the Voltage (THDv) in the presence of EVs and DG, at the PCC. Currently, Demand Side Management (DSM) strategies are primarily being designed based upon the daily load profile only. This research work gives a different perspective for the DSM based upon "Daily Harmonic Profile" developed by combining the experimental and simulation results. The results indicate that throughout the day, the THDv has a value of more than 1.5 % with per hour average THDv being equal to 3.25 %. The-situation worsens if the increased winter loading is considered to investigate the daily harmonic profile. This research work also explores the potential impacts of the developed profile on the DSM schemes to control the harmonic distortion in the future distribution systems.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available