ANALISIS KERJA RELE DIFERENSIAL PADA TRAFO 60 MVA DI GARDU INDUK SIBOLGA 150 kV
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Purba, Ledy Diana
Sudibyo, Uno Bintang
Sudibyo, Uno Bintang
Subject
Teknik Elektro
Datestamp
2019-10-28 04:36:31
Abstract :
A power transformer on a transmission system is an important main component, and therefore it must be protected from the faults leading to reduced reliability.. A protection system provides protection electrical equipment againts in abnormal conditions. One of the devices that use the power transformer protection is a differential relay. Differential relays for as main protection and cannot be used as a backup protection. This relay works by comparing the current flow of incoming and outgoing. The relay will detect fault and instructs circuit breaker to open (trip). A good protection system is supported by appropriate settings on differential relay to prevent faults and improve the reliability of the transmission system. The method used is descriptive quantitative method where to get the results of the calculation, data parameters in the form of numbers are needed. so that if the results obtained from the calculation will be able to describe the comparison of the differential relay work analysis on the 60 MVA transformer at 150 kV substation.The datas used in this research are secondary data taken at GI Sibolga and looking for journal references related to the study. All data is used as a component of manual mathematical calculations. Components calculated are current transformer ratio values, errors mismatch and parameters at the differential relay in normal conditions and at the time of faults. Current settings is obtained from the calculation is 1,361 A, and it is expected to set the transformer protection system to work optimally.
A power transformer on a transmission system is an important main component, and therefore it must be protected from the faults leading to reduced reliability.. A protection system provides protection electrical equipment againts in abnormal conditions. One of the devices that use the power transformer protection is a differential relay. Differential relays for as main protection and cannot be used as a backup protection. This relay works by comparing the current flow of incoming and outgoing. The relay will detect fault and instructs circuit breaker to open (trip). A good protection system is supported by appropriate settings on differential relay to prevent faults and improve the reliability of the transmission system. The method used is descriptive quantitative method where to get the results of the calculation, data parameters in the form of numbers are needed. so that if the results obtained from the calculation will be able to describe the comparison of the differential relay work analysis on the 60 MVA transformer at 150 kV substation.The datas used in this research are secondary data taken at GI Sibolga and looking for journal references related to the study. All data is used as a component of manual mathematical calculations. Components calculated are current transformer ratio values, errors mismatch and parameters at the differential relay in normal conditions and at the time of faults. Current settings is obtained from the calculation is 1,361 A, and it is expected to set the transformer protection system to work optimally.
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