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Analyzing and Mitigating Power Quality Problems of Grid-Connected Wind Energy Systems

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dc.contributor.advisor Roy, Dr. Naruttam Kumar
dc.contributor.author Das, Aparupa
dc.date.accessioned 2018-12-18T10:00:47Z
dc.date.available 2018-12-18T10:00:47Z
dc.date.copyright 2018
dc.date.issued 2018-04
dc.identifier.other ID 1503502
dc.identifier.uri http://hdl.handle.net/20.500.12228/462
dc.description This thesis is submitted to the Department of Electrical and Electronic Engineering, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Science in Electrical and Electronic Engineering, April 2018. en_US
dc.description Cataloged from PDF Version of Thesis.
dc.description Includes bibliographical references (pages 77-83).
dc.description.abstract To meet the excessive demand of electric power and maintain a sustainable development with a greener world, the generation system now moves to renewable energy sources. Among the renewable based distributed generation systems, the wind based one is becoming popular day by day. When the wind based distributed generation (DG) and the distributed network (DN) both are connected to establish a technologically upgraded system, then different types of power quality problems arise in the system. In this thesis, the adverse impact of the resultant harmonics of permanent magnet synchronous generator (PMSG) based wind turbine is examined from every corner and also found a perfect remedy. For pointing out the harmonics nature and magnitude of distribution systems, different types of non-linear loads, such as resistive-inductive loads, induction motor with adjustable speed drive and arc furnace are modeled. In faulty conditions, the voltage sag and swell issues are also overviewed here. In this research, an AC/DC/AC converter is designed with voltage dependent current limiter and the proposed current control mechanism of the generator’s converter is based on the straight line theory. The proposed control mechanism for designing the voltage source converter of the static synchronous compensator (STATCOM), which is connected to a battery, is governed by the pulse width modulation technique. A proper integration between these two control mechanisms creates a stable system and mitigates the power quality problems. The overall performance of the proposed model is tested on a 12 bus radial network, with designed nonlinear loads connected to it, using PSCAD/EMTDC software and afterwards laboratory tests are carried out to examine the harmonics currents and voltages. From the analysis, it is investigated that harmonic increases as the number of distributed generator increases and also in faulty conditions. Moreover, the level of harmonic varies based on the position of the wind generator and non-linear loads. The research outcome obtained from this comprehensive analysis proved that the proposed control mechanism approach is successful to eliminate and keep the voltage and current harmonics within a safe range, maintain the power system stability as well as mitigate the voltage sag and swell. en_US
dc.description.statementofresponsibility Aparupa Das
dc.format.extent 88 pages
dc.language.iso en_US en_US
dc.publisher Khulna University of Engineering & Technology (KUET), Khulna, Bangladesh en_US
dc.rights Khulna University of Engineering & Technology (KUET) thesis/dissertation/internship reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
dc.subject Power Quality en_US
dc.subject Wind Energy Systems en_US
dc.subject Distributed Generation en_US
dc.subject Distributed Network en_US
dc.subject Permanent Magnet Synchronous Generator en_US
dc.subject Wind Turbine en_US
dc.title Analyzing and Mitigating Power Quality Problems of Grid-Connected Wind Energy Systems en_US
dc.type Thesis en_US
dc.description.degree Master of Science in Electrical and Electronic Engineering
dc.contributor.department Department of Electrical and Electronic Engineering

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