STUDI KEANDALAN SISTEM PROTEKSI DIFFERENTIAL RELAY PADA GENERATOR GAS TURBIN 3.1 PLTGU PRIOK DI PT. INDONESIA POWER PRIOK POMU
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
MAHARDIKA, EZRA
Hariyanto, Agung
Hariyanto, Agung
Subject
Teknik Elektro
Datestamp
2022-11-03 07:00:23
Abstract :
Generators play an important role in the electricity generation system in distributing electrical energy, so a protection system is needed that can secure the generator when a short circuit occurs, one of which is a differential relay that can overcome short circuit disturbances without delay. To improve the reliability of the differential generator relay, it is necessary to evaluate the performance of the relay so that it can be said that the relay works when there is a short circuit. This study uses a comparative quantitative method by comparing the results of tests that have been carried out, manufacture settings, calculation results, and simulation of relay performance using ETAP software. Where the test results and calculations are compared with the manufacture calculation settings. Test data obtained during major inspection testing in 2018 and turbine inspection in 2021. Test results in 2018 and 2021 obtained comparison results on pickup current measurements of 0%. For the measurement of pickup time, a comparison of 0.01 s - 0.02 s is obtained. While the comparison between the calculation and the manufacture calculation, there is a difference of 0.06 A for the pickup current and a slope of 10%, because the calculation does not include the provisions of the manufacture calculation. Then for the simulation using ETAP software, it can be said that the relay works when the disturbance is in the protection area and does not work when the disturbance is outside the protection area.
Generators play an important role in the electricity generation system in distributing electrical energy, so a protection system is needed that can secure the generator when a short circuit occurs, one of which is a differential relay that can overcome short circuit disturbances without delay. To improve the reliability of the differential generator relay, it is necessary to evaluate the performance of the relay so that it can be said that the relay works when there is a short circuit. This study uses a comparative quantitative method by comparing the results of tests that have been carried out, manufacture settings, calculation results, and simulation of relay performance using ETAP software. Where the test results and calculations are compared with the manufacture calculation settings. Test data obtained during major inspection testing in 2018 and turbine inspection in 2021. Test results in 2018 and 2021 obtained comparison results on pickup current measurements of 0%. For the measurement of pickup time, a comparison of 0.01 s - 0.02 s is obtained. While the comparison between the calculation and the manufacture calculation, there is a difference of 0.06 A for the pickup current and a slope of 10%, because the calculation does not include the provisions of the manufacture calculation. Then for the simulation using ETAP software, it can be said that the relay works when the disturbance is in the protection area and does not work when the disturbance is outside the protection area.
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