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Analysis of Electromagnetic Transient Program (EMTP) of Lightning Surge of a Vertical Conductor and its Invasion to a Control Building

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dc.contributor.advisor Goni, Dr. Md. Osman
dc.contributor.author Rahman, Md. Mostafizur
dc.date.accessioned 2018-08-09T04:17:55Z
dc.date.available 2018-08-09T04:17:55Z
dc.date.copyright 2005
dc.date.issued 2005-06
dc.identifier.other ID 973002
dc.identifier.uri http://hdl.handle.net/20.500.12228/235
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, June 2005. en_US
dc.description Cataloged from PDF Version of Thesis.
dc.description Includes bibliographical references (pages 93-94).
dc.description.abstract The lightning surge characteristics of transmission line components as well as the statistical data of lightning such as the ground flash density and the stroke peak current distributions are very essential for analyzing the lightning performance of overhead power transmission lines and substations. Lightning over-voltages must be taken into account when designing a vertical tower model and the insulation system of a cable. In the world, specially in Japan various studied, therefore, have been done to measure the characteristics of the line components and to develop their equivalent circuit models for the Electromagnetic Transient Program (EMTP) simulations. EMTP has been widely used in Japan to analyze switching and lightning over-voltages to design power stations and substations from the viewpoint of insulation coordination. The Japanese standard of' high voltage testing, JEC-0102-1994, and the insulation design and the coordination of an 1 l()()-kV line of lokyo electric power company were mostly based on EMTP simulations. 'I'his research demonstrates the electromagnetic behaviour of transient i-espouse of lightning surge strike on single vertical conductor, base-broadened tower, actual tower and the control building. Vertical conductor surge responses are analysed using EMTP. The accuracy of this method is shown to be satisfactory with the simulation result based on the numerical electroiiiagnctic code (NEC-2) that were carried out on vertical tower as reduced scale model. Surge iiiipcdancc is calculated by both the vertical and horizontal stroke analyses method. In addition, line constant program of different frecuency of EMTP is also verified in the work for evaluating (lie voltage and current due o lightning surge. lhcrc have been considerations sonic methods to evaluate the transient characteristics of a tower, such as : (i) theoretical studies, (ii) simulation of reduced scale models and (iii) simulation of lill-sized tower. The simulation analysis of surge response are carried out in the several arrangements of the current lead wire: (i) vertical and at the top of vertical conductor. (ii) vertical and a little far from the top of vertical conductor, and (iii) horizontal and far from the top of vertical conductor.In all the cases, the voltage measuring wire is also placed perpendicular to the current lead wire. Each of the arrangement of the current lead wire affects the measured surge impedance of' the vertical conductor and that has been explained in this research in detail. If a travelling wave propagates along the vertical conductor at the velocity of light, the reflected wave from the ground should return to the top of the vertical conductor just after the round-tril) time of the travelling wave in the vertical conductor.In all the cases, the voltage measuring wire is also placed perpendicular to the current lead wire. Each of the arrangement of the current lead wire affects the measured surge impedance of' the vertical conductor and that has been explained in this research in detail. If a travelling wave propagates along the vertical conductor at the velocity of light, the reflected wave from the ground should return to the top of the vertical conductor just after the round-tril) time of the travelling wave in the vertical conductor. en_US
dc.description.statementofresponsibility Md. Mostafizur Rahman
dc.format.extent 103 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 Electromagnetic Transient Program en_US
dc.subject Lightning Surge en_US
dc.subject Vertical Conductor en_US
dc.subject Transmission Line Component en_US
dc.subject Electromagnetic Behaviour en_US
dc.title Analysis of Electromagnetic Transient Program (EMTP) of Lightning Surge of a Vertical Conductor and its Invasion to a Control Building 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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