Peranan EWARS Pada Relay Mekanik di Trafo Daya 1 Gardu Induk Kotabumi
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Taqiyyah, Izdihar Al
Widyastuti, Christine
Widyastuti, Christine
Subject
Teknik Elektro
Datestamp
2022-09-30 07:07:01
Abstract :
The protection relay on the transformer is an equipment that can detect any disturbance that occurs in the line or equipment quickly under normal working conditions of an elec-tric power system and automatically the power breaker works to disconnect the line due to system disturbance. There is an internal transformer protection consisting of electrical and mechanical relays. According to recorded data on transformer disturbances at UPT Tanjung Karang in 2012-2016, mechanical relay disturbances occurred 4 times due to corrosive sudden pressure relays. The existence of EWARS serves to continuously moni-tor mechanical relays to prevent disturbances that have occurred as previously men-tioned. EWARS has settings on each channel where at 30V voltage becomes alarm 1, 50V voltage becomes alarm 2, and 70V voltage becomes a trip indication. Based on the results of testing the Omron relay to determine when the contact is active at a voltage of 80 V. If we compare the results of the Omron relay test with the calculation of Ohm's Law, we get a voltage result of 79.767 V with a difference of 0.233 V due to the tolerance of the mul-timeter measuring instrument.
The protection relay on the transformer is an equipment that can detect any disturbance that occurs in the line or equipment quickly under normal working conditions of an elec-tric power system and automatically the power breaker works to disconnect the line due to system disturbance. There is an internal transformer protection consisting of electrical and mechanical relays. According to recorded data on transformer disturbances at UPT Tanjung Karang in 2012-2016, mechanical relay disturbances occurred 4 times due to corrosive sudden pressure relays. The existence of EWARS serves to continuously moni-tor mechanical relays to prevent disturbances that have occurred as previously men-tioned. EWARS has settings on each channel where at 30V voltage becomes alarm 1, 50V voltage becomes alarm 2, and 70V voltage becomes a trip indication. Based on the results of testing the Omron relay to determine when the contact is active at a voltage of 80 V. If we compare the results of the Omron relay test with the calculation of Ohm's Law, we get a voltage result of 79.767 V with a difference of 0.233 V due to the tolerance of the mul-timeter measuring instrument.
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