STUDI KOORDINASI RELE ARUS LEBIH DAN RELE GANGGUAN TANAH PLTGU PANARAN
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Putra, Pristian Dwi
Willy BS, Purnomo
Willy BS, Purnomo
Subject
Teknik Elektro
Datestamp
2019-11-08 04:03:10
Abstract :
With the addition of new unit on Panaran Combined Cycle Power Plant, the evaluation of the proctection system is absolutely necessary to ensure the reliability system of powet plant. One way is pay attention to protection coordination with enabled relay as main and backup protection. Protection relay that can be coodinated is overcurrent relay (OCR) and ground fault relay (GFR). That is by analyzing the protection setting of overcurrent relay and ground fault relay then describing the protective relay time characteristic curve. To perform the calculation protective relay settings need to pay attention to the value of short circuit current, load list, and related equipments. And then calculation for relay setting are compared to the existing relay setting. Overall from the analysis coordination, the existing relay setting has been tuned properly. However there are some settings that are less precise. That is 50 device of step up transformer and 51 device of gas turbine generator. The value of current setting are too low. So that current settings are advised raised according to the calculations. While the coordination of ground fault relay, time setting of auxiliary transformers, BFW motor, and CWP motor can be made lower for faster relay performance in detecting the fault current.
With the addition of new unit on Panaran Combined Cycle Power Plant, the evaluation of the proctection system is absolutely necessary to ensure the reliability system of powet plant. One way is pay attention to protection coordination with enabled relay as main and backup protection. Protection relay that can be coodinated is overcurrent relay (OCR) and ground fault relay (GFR). That is by analyzing the protection setting of overcurrent relay and ground fault relay then describing the protective relay time characteristic curve. To perform the calculation protective relay settings need to pay attention to the value of short circuit current, load list, and related equipments. And then calculation for relay setting are compared to the existing relay setting. Overall from the analysis coordination, the existing relay setting has been tuned properly. However there are some settings that are less precise. That is 50 device of step up transformer and 51 device of gas turbine generator. The value of current setting are too low. So that current settings are advised raised according to the calculations. While the coordination of ground fault relay, time setting of auxiliary transformers, BFW motor, and CWP motor can be made lower for faster relay performance in detecting the fault current.
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