Load optimization on the performance of combined cycle power plant Block 4 PT Indonesia Power Priok POMU

Louise Indah Utami, Ika Yuliyani, Yanti Suprianti, Purwinda Iriani

Abstract

Combined cycle power plant (CCPP) is a closed-cycle power plant, where the heat from the gas turbine’s (GT) exhaust gas will be streamed to the heat recovery steam generator (HRSG) to be utilized by steam turbine (ST). CCPP Block 4 (Jawa-2) PT Indonesia Power Priok POMU has an installed capacity of 880 MW, consists of 2 GT units (301.5 MW each) and 1 ST unit (307.5 MW). The performance of a power plant depends on its load, as the efficiency of the turbine generator is low when operated at low loads. The data as of July 2019 showed that 2.2.1 (2 GT, 2 HRSG, 1 ST) configuration has been used in three conditions where the CC net load was around 30 - 45 %, which in fact could be compensated by the 1.1.1 (1 GT, 1 HRSG, 1 ST) configuration. This resulted in a decrease of the CC net efficiency up to 21.34 %. The optimization that can be done is to change the load configuration from 2.2.1 to 1.1.1 at 0 - 50 % of CC net load through simulations, by including the influence of the GT and HRSG start-up processes. The result of this optimization is that the CCPP performance increases due to higher performance of each turbine generator. Thus, the optimization results during July 2019 provided energy saving of 1,146.09 MMBTU or equivalent to cost saving of IDR 152,249,551.76.



Keywords


combined cycle; gas turbine; steam turbine; load optimization; power plant performance.

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References


G. Khankari and S. Karmakar, “4-E analysis of a Kalina cycle system 11 integrated 500MWe combined thermal power plant, "TENCON 2017 - 2017 IEEE Region 10 Conference, pp. 93-98, 2017.

Mohammad Ali Motamed and Lars O. Nord, “Assessment of organic Rankine cycle part-load performance as gas turbine bottoming cycle with variable area nozzle turbine technology,” MDPI Energies Journal, vol. 14, 2021.

V. S. Kuz'michev, A. Y. Tkachenko, Y. A. Ostapyuk, I. N. Krupenich and E. P. Filinov, "Features of computer modeling of the working process of small-scale gas turbine engines," 2017 International Conference on Mechanical, System and Control Engineering (ICMSC), pp. 136-140, 2017.

Dan-Teodor Balanescu and Vlad-Mario Homutescu, “Performance analysis of a gas turbine combined cycle power plant with waste heat recovery in organic Rankine cycle,” Procedia Manufacturing (The 12th International Conference Interdiciplinarity in Engineering), vol. 32, pp. 520-528, 2019.

M. J. B. Kabeyi and O. A. Olanrewaju, “Performance analysis of an open cycle gas turbine power plant in grid electricity generation,” 2020 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM), pp. 524-529, 2020.

Yongyi Li, Guoqiang Zhang, Ligang Wang, and Yongping Yang, “Part-load performance analysis of a combined cycle with intermediate recuperated gas turbine,” Energy Conversion and Management, vol. 205, 2020.

Dede Mavendra, “Kalkulasi efisiensi daya mesin pltgu dengan pola operasi 2-2-1 dan 3-3-1 PT Indonesia Power Unit Pembangkitan Semarang,” USD Repository, 2016.

Xiang Wan, Niansu Hu, Pengfei Han, Shiqi Li, “Performance monitoring of the gas-steam combined cycle unit in multi-energy power grid,” Proceedings of the 2015 International Conference on Sustainable Energy and Environmental Engineering, Oct. 2015.

Michael Welch, “Improving the Flexibility and Efficiency of Gas Turbine-Based Distributed Power Plant,” 8th International Gas Turbine Conference, ETN Global, 2016.

Vicky, Wegie Ruslan, and Anthony Riman, “Optimization of combined-cycle power plant operating pattern,” RIP International Journal of Applied Engineering Research, vol. 12, no. 21, pp. 11576-11582, 2017.

Wartsila, Combustion engine vs gas turbine: part load efficiency and flexibility. Wartsila, 2022.

Yunus A. Cengel and Michael A. Boles, Thermodynamics: an engineering approach. US: McGraw Hill, 5th ed, p. 584, 2004.

V. Camacho and R. Chaer, “Hourly model of a combined cycle power plant for SimSEE,” 2020 IEEE PES Transmission & Distribution Conference and Exhibition - Latin America (T&D LA), pp. 1-5, 2020.

Mitsubishi Power, GTCC gas turbine combined cycle power plants. mitsubishi power, 2021.

M. Olga, C. Pavel and P. Andrey, "Combined cycle power plant control during frequency excursions," 2017 9th International Conference on Information Technology and Electrical Engineering (ICITEE), 2017, pp. 1-5, 2017.


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