Analisis Perbandingan Performa Turbin Gas Unit 2.3 Sebelum dan Sesudah Pemeliharaan Combustor Dengan Kondisi Commisioning di PLTGU Gresik
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Dinalda Fadillah, Dimas
Nurhasanah, Roswati
Nurhasanah, Roswati
Subject
Teknik Mesin
Datestamp
2022-10-06 03:00:45
Abstract :
The Gresik Gas Power Plant operating from 1994 with a gas turbine over time has decreased in performance, which will affect the level of efficiency of the gas turbine. Maintenance performed is Combustor Maintenance (CI) or fuel inspection. This study aims to determine the effect of Combustor Maintenance (CI) on the efficiency of the gas turbine unit 2.3 PLTGU Gresik, so the efficiency calculation method is based on the input and output components of the gas turbine. The effect of Combustor Maintenance (CI) seen from compressor efficiency, combustion chamber efficiency, turbine efficiency, Brayton thermal cycle efficiency, and fuel consumption. Therefore, the author tries to calculate and analyze the efficiency of gas turbines before and after Combustor Maintenance (CI) and also compare with commissioning conditions. The results of calculations after Maintenance Combustor thermal efficiency has the highest increase of 0.62%, compressor efficiency has the highest increase of 0.68%, combustion chamber efficiency has increased the highest 0.36%, turbine efficiency has the highest increase of 0.11%, fuel consumption experienced the highest decrease of 0.007 kg / kWh. Comparison of thermal efficiency was done in conditions before and after maintenance with commissioning with a 50MW load before maintenance dropped by 1.3% and after maintenance dropped by 0.68%. Efficiency of the compressor before going down 4.07% and after going down 3.39%. The efficiency of the combustion chamber fell 1.97% and after a decrease of 1.35%. Turbine efficiency decreased 0.11% and after decreased 0.03% and fuel consumption before maintenance increased 0.023 kg / kWh and after rising 0.016 kg / kWh.
The Gresik Gas Power Plant operating from 1994 with a gas turbine over time has decreased in performance, which will affect the level of efficiency of the gas turbine. Maintenance performed is Combustor Maintenance (CI) or fuel inspection. This study aims to determine the effect of Combustor Maintenance (CI) on the efficiency of the gas turbine unit 2.3 PLTGU Gresik, so the efficiency calculation method is based on the input and output components of the gas turbine. The effect of Combustor Maintenance (CI) seen from compressor efficiency, combustion chamber efficiency, turbine efficiency, Brayton thermal cycle efficiency, and fuel consumption. Therefore, the author tries to calculate and analyze the efficiency of gas turbines before and after Combustor Maintenance (CI) and also compare with commissioning conditions. The results of calculations after Maintenance Combustor thermal efficiency has the highest increase of 0.62%, compressor efficiency has the highest increase of 0.68%, combustion chamber efficiency has increased the highest 0.36%, turbine efficiency has the highest increase of 0.11%, fuel consumption experienced the highest decrease of 0.007 kg / kWh. Comparison of thermal efficiency was done in conditions before and after maintenance with commissioning with a 50MW load before maintenance dropped by 1.3% and after maintenance dropped by 0.68%. Efficiency of the compressor before going down 4.07% and after going down 3.39%. The efficiency of the combustion chamber fell 1.97% and after a decrease of 1.35%. Turbine efficiency decreased 0.11% and after decreased 0.03% and fuel consumption before maintenance increased 0.023 kg / kWh and after rising 0.016 kg / kWh.
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