Performance Test of G19 Unit of Zahedan Gasous Power Plant After Its Last Overhaul

In this paper, we investigate the performance of a gas unit, FRAME 5, at the Zahedan gas power plant. Unit G19 of the power plant was not able to generate more than 16MW following the last overhaul in 2020 due to the constraint of wheel space temperature and exhaust temperature. Thus, it was shut down for overhaul in 2020 after 15100 hours of operation. The size of all clearances was set in accordance with the manufacturer's standard and finally, unit efficiency increased from 23.01% before to overhaul to 23.99 % after the overhaul. According to the operation instruction, the unit has a temperature limit for wheel space of approximately 426℃. Therefore, wheel space temperature was 430℃ before overhaul with a load of 15.68MW and was 430℃ after the overhaul with a load of 16.77MW indicating an increase in active load with a similar temperature. Exhaust temperature limit of the unit is 500 degrees Celsius. Therefore, there was no change in the exhaust temperature of the unit after the overhaul. Therefore, by performing the performance test on this unit, it was determined that after this overhaul, the efficiency and output power have increased. But these values are far from the installation condition.

کلیدواژه های Performance Test of G19 Unit of Zahedan Gasous Power Plant After Its Last Overhaul:

Gas turbine ، Efficiency ، Out put power ، Performance test