Chowdhury, Abdul HasibAhmed, ProttashaFaiyaz, Alif FatinGupta, Anik DasRashid, Hisham -Al-2018-05-082018-05-0820184/17/2018ID 14121023ID 14221017ID 14321040ID 14321041http://hdl.handle.net/10361/10001Catalogued from PDF version of thesis.Includes bibliographical references (page 93-97).This thesis is submitted in partial fulfilment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2018.A switching transient over-voltage is created and travels along the line following switching to energize or de-energize a transmission line. This switching transient over-voltage will reach its highest levels at the transition points connecting an underground cable to an overhead line. The transient over-voltage will exceed the normal operating voltage and will be transmitted to the lower voltage level system. The magnitude of the transient over-voltage has to be limited to avoid exceeding substation equipment surge ratings. Without the limitation, the overvoltage may cause damage to the system protective devices. This study will investigate transient over-voltages associated with closing a breaker to energize or de-energize a high voltage transmission line.100 pagesenBRAC University theses 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.Voltage transmissionRLC circuitThesis