Assessing the impact of protection system malfunctions on the power transmission system

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Date
2022-02-20
Author
Kayemba, Charles
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Abstract
Apowertransmissionsystemreferstomeansoftransmittingpowerfromageneratingsourceto variousloadcenters. InUganda,UgandaElectricityTransmissionCompanyLimited(UETCL)isresponsibleforpower transmissionwhichitthensellstoUmemewheretheendusersareserved. ThehighvoltagesatwhichpoweristransmittedcurrentlyinUgandaare;66KV,132KVand 220KV,the400KVisbeingestablishedbutnotyetcommissioned. Thenetworkisprotectedbyvariousprotectionschemeswhichinclude;overcurrent,distanceand differentialprotectionandothers.Intheduecourseofoperation,protectionsystemmalfunctions occur,thusthereisaneedtoanalyzethesemalfunctionsinordertoassesstheirimpactonthe powertransmissionsystemandinthisstudy,wearefocusingontheirimpactonthepower transmissionsystemreliability. OurcasestudyisKawandasubstation,andafterouranalysis,weshallgaugethereliabilitylevel ofourpowertransmissionsystemandthereforesuggestsomemeasuresthatcanbeundertaken thereafter.
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http://hdl.handle.net/20.500.12281/11281
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