Resetting the ground fault relay on a 28 MVA power transformer due to grounding method retrofit
. The goal of the retrofit at Zamrud substation is to transform a 28 MVA power transformer's neutral point grounding system from direct grounding to grounding using a 20 Ohm Neutral Grounding Resistor (NGR). The amount of short-circuit current produced will fluctuate with the installation of NG...
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IOP Publishing
2022
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Online Access: | http://ir.unimas.my/id/eprint/40381/1/Resetting%20the%20ground%20-%20Copy.pdf http://ir.unimas.my/id/eprint/40381/ https://iopscience.iop.org/article/10.1088/1755-1315/1041/1/012021 |
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my.unimas.ir.403812022-11-09T02:43:11Z http://ir.unimas.my/id/eprint/40381/ Resetting the ground fault relay on a 28 MVA power transformer due to grounding method retrofit Hamzah, Eteruddin Arlenny, - Hadiana, Siswanto Yanuar Z., Arief Fathimah, Hasanti . The goal of the retrofit at Zamrud substation is to transform a 28 MVA power transformer's neutral point grounding system from direct grounding to grounding using a 20 Ohm Neutral Grounding Resistor (NGR). The amount of short-circuit current produced will fluctuate with the installation of NGR. It is necessary to re-setting the Ground Fault Relay (GFR) on Zamrud substation. To estimate the value of the short-circuit current after installing the NGR, the impedance matrix approach is used to calculate it. According to the results, LG's largest short-circuit current is 397.83 A and its smallest is 313.55 A. Meanwhile LLG has a maximum short-circuit current of 5.334.30 A and a minimum short-circuit current of 943.31 A. Therefore, after NGR installation, the value of the relay setting is as follows: GFR pickup current on the transformer grounding GFR relay is 234.29 A, GFR pickup current on the neutral feeder 1 is 19.96 A, GFR pickup current on the neutral feeder 2 is 30.42 A, and GFR pickup current on the neutral feeder 3 is 38.40 A. IOP Publishing 2022 Proceeding PeerReviewed text en http://ir.unimas.my/id/eprint/40381/1/Resetting%20the%20ground%20-%20Copy.pdf Hamzah, Eteruddin and Arlenny, - and Hadiana, Siswanto and Yanuar Z., Arief and Fathimah, Hasanti (2022) Resetting the ground fault relay on a 28 MVA power transformer due to grounding method retrofit. In: 2021 International Conference on Environmental, Energy and Earth Science, ICEEES 2021, 22-23 September 2021, Virtual, Online. https://iopscience.iop.org/article/10.1088/1755-1315/1041/1/012021 doi:10.1088/1755-1315/1041/1/012021 |
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. The goal of the retrofit at Zamrud substation is to transform a 28 MVA power transformer's neutral point grounding system from direct grounding to grounding using a 20 Ohm Neutral Grounding Resistor (NGR). The amount of short-circuit current produced will fluctuate with the installation of NGR. It is necessary to re-setting the Ground Fault Relay (GFR) on Zamrud substation. To estimate the value of the short-circuit current after installing the NGR, the impedance matrix approach is used to calculate it.
According to the results, LG's largest short-circuit current is 397.83 A and its smallest is 313.55 A. Meanwhile LLG has a maximum short-circuit current of 5.334.30 A and a minimum short-circuit current of 943.31 A. Therefore, after NGR installation, the value of the relay setting is as follows: GFR pickup current on the transformer grounding GFR relay is 234.29 A, GFR pickup current on the neutral feeder 1 is
19.96 A, GFR pickup current on the neutral feeder 2 is 30.42 A, and GFR pickup current on the neutral feeder 3 is 38.40 A. |
format |
Proceeding |
author |
Hamzah, Eteruddin Arlenny, - Hadiana, Siswanto Yanuar Z., Arief Fathimah, Hasanti |
spellingShingle |
Hamzah, Eteruddin Arlenny, - Hadiana, Siswanto Yanuar Z., Arief Fathimah, Hasanti Resetting the ground fault relay on a 28 MVA power transformer due to grounding method retrofit |
author_facet |
Hamzah, Eteruddin Arlenny, - Hadiana, Siswanto Yanuar Z., Arief Fathimah, Hasanti |
author_sort |
Hamzah, Eteruddin |
title |
Resetting the ground fault relay on a 28 MVA power transformer
due to grounding method retrofit |
title_short |
Resetting the ground fault relay on a 28 MVA power transformer
due to grounding method retrofit |
title_full |
Resetting the ground fault relay on a 28 MVA power transformer
due to grounding method retrofit |
title_fullStr |
Resetting the ground fault relay on a 28 MVA power transformer
due to grounding method retrofit |
title_full_unstemmed |
Resetting the ground fault relay on a 28 MVA power transformer
due to grounding method retrofit |
title_sort |
resetting the ground fault relay on a 28 mva power transformer
due to grounding method retrofit |
publisher |
IOP Publishing |
publishDate |
2022 |
url |
http://ir.unimas.my/id/eprint/40381/1/Resetting%20the%20ground%20-%20Copy.pdf http://ir.unimas.my/id/eprint/40381/ https://iopscience.iop.org/article/10.1088/1755-1315/1041/1/012021 |
_version_ |
1751540609563230208 |
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13.18916 |