ANALISIS KINERJA RELE DIFERENSIAL DAN RELE ARUS LEBIH SEBAGAI PROTEKSI TRANSFORMATOR DAYA DI GARDU INDUK 150 kV BOGOR BARU
Total View This Week0
Total View This Week0
Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
RISKA UTAMI, ALDIA
Samsurizal, Samsurizal
Samsurizal, Samsurizal
Subject
Teknik Elektro
Datestamp
2022-11-01 01:24:52
Abstract :
Protection is a form of protection against electrical equipment in order to minimize damage to equipment caused by interference. One of the electrical equipment that requires protection is a power transformer. Protection on power transformers is differential relay as primary protection and overcurrent relay as backup protection. In this study, an analysis was carried out on the differential and overcurrent protection settings or OCR/GFR installed on the unit 5 transformer at the 150 kV Bogor Baru Substation. The setting is calculated based on the theory of setting calculations and data on transformers and relays in the substation. In setting up each of these relays, several stages of calculation are used. Among them for differential relays, the 20 kV side CT ratio is 2000/1A, the 150 kV side CT ratio is 300/1A. Slope K1 of 31.165% is assumed to be 30% by PLN standards. The result of setting calculation shows a smaller value than the setting used. This is because the calculation results are based on parameter data after a CT change due to interference. But a smaller setting current value will increase the sensitivity of the relay. Meanwhile, for overcurrent relays with the standard inverse type, the TMS value and working time of the relay will be compared with the settings used. The calculation results show a value that is in accordance with the settings at the 150 kV Bogor Baru Substation.
Protection is a form of protection against electrical equipment in order to minimize damage to equipment caused by interference. One of the electrical equipment that requires protection is a power transformer. Protection on power transformers is differential relay as primary protection and overcurrent relay as backup protection. In this study, an analysis was carried out on the differential and overcurrent protection settings or OCR/GFR installed on the unit 5 transformer at the 150 kV Bogor Baru Substation. The setting is calculated based on the theory of setting calculations and data on transformers and relays in the substation. In setting up each of these relays, several stages of calculation are used. Among them for differential relays, the 20 kV side CT ratio is 2000/1A, the 150 kV side CT ratio is 300/1A. Slope K1 of 31.165% is assumed to be 30% by PLN standards. The result of setting calculation shows a smaller value than the setting used. This is because the calculation results are based on parameter data after a CT change due to interference. But a smaller setting current value will increase the sensitivity of the relay. Meanwhile, for overcurrent relays with the standard inverse type, the TMS value and working time of the relay will be compared with the settings used. The calculation results show a value that is in accordance with the settings at the 150 kV Bogor Baru Substation.
Download
book
BibTex
Latex, Jabref
cloud_download
Original Resource
url resource Institution
