Pengaruh Variasi Beban Terhadap Perubahan Temperature Generator Winding Pada Generator Sinkron di PT Indonesia Power Suralaya PGU Unit 5
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Ulan Sari, Ni Made Putri
Adnyana, Isvhandono Yunaini
Oktaviana Putri, Tri Wahyu
Adnyana, Isvhandono Yunaini
Oktaviana Putri, Tri Wahyu
Subject
Teknik Elektro
Datestamp
2022-10-12 04:15:46
Abstract :
The increased temperature of Suralaya Power Plant generator winding Unit 5 is considered to be an important matter which may cause isolation failure. Based on the quantitative data from the research and analysis on the Simple Linear Regression, there has been identified the factors resulting in the increased temperature of generator winding unit 5 at PLTU Suralaya namely, Active Power to stator winding of 97,1% and Reactive Power to rotor winding of 59,2. Generator is at the safe limit of generator capability curve since its operation not exceeding the parameters generator capability curve, that is Active Power of 600 MW and Reactive Power of 300 MW including the pressure and purity of the Hydrogen cooling system which rests at the allowed minimum and maximum limits and the increased temperature of generator winding does not exceed the class maximum limit of Isolation type F of 150?. The condition of Active Power is equal to the increased temperature of stator winding (?T) of 1,95? which results in copper losses (Pcu) of 0,4716% and change in the maximum increased temperature (?T) of 16,01? results in loss of 5,5836% meanwhile the results copper loss in the rotor winding of 6,2176% in the maximum increased temperature (?T) of 17,01?. With the copper loss generated, the hydrogen cooling system is required to eliminate the heat so that the copper loss in the generator winding can be minimized.
The increased temperature of Suralaya Power Plant generator winding Unit 5 is considered to be an important matter which may cause isolation failure. Based on the quantitative data from the research and analysis on the Simple Linear Regression, there has been identified the factors resulting in the increased temperature of generator winding unit 5 at PLTU Suralaya namely, Active Power to stator winding of 97,1% and Reactive Power to rotor winding of 59,2. Generator is at the safe limit of generator capability curve since its operation not exceeding the parameters generator capability curve, that is Active Power of 600 MW and Reactive Power of 300 MW including the pressure and purity of the Hydrogen cooling system which rests at the allowed minimum and maximum limits and the increased temperature of generator winding does not exceed the class maximum limit of Isolation type F of 150?. The condition of Active Power is equal to the increased temperature of stator winding (?T) of 1,95? which results in copper losses (Pcu) of 0,4716% and change in the maximum increased temperature (?T) of 16,01? results in loss of 5,5836% meanwhile the results copper loss in the rotor winding of 6,2176% in the maximum increased temperature (?T) of 17,01?. With the copper loss generated, the hydrogen cooling system is required to eliminate the heat so that the copper loss in the generator winding can be minimized.
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