Optimisation of Combined Cycle Gas Turbine Power Plant in Intraday Market: Riga CHP-2 Example

Ivanova, Poļina; Grebesh, Ervin; Linkevičs, Oļegs

doi:10.2478/lpts-2018-0002

Cited by 7 publications

(1 citation statement)

References 6 publications

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“…In case of deviation from a specified load by an amount exceeding 2% of the declared maximum on-power but not less than by 1 MW at the end of an hour for more than 4 consecutive hours and when this deviation is not related to the disconnection of the generating equipment, the corresponding decrease in maximum power is recorded for all hours. [2][3][4] The purpose of this paper is to study and analyze the possibility to increase the power output of a combined cycle-gas turbine (CCGT) unit during periods of positive ambient temperatures.…”

Section: Introductionmentioning

confidence: 99%

Study of the work and efficiency improvement of combined-cycle gas turbine plants

et al. 2019

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The purpose of the paper is to study and analyze the possibility of increasing the power output of a combined-cycle gas turbine (CCGT) unit during the period of positive ambient temperatures. The first task is to analyze the operation of a 110 MW combined-cycle power unit at various ambient temperatures and to obtain alterations in the main CCGT characteristics when the ambient temperature changes. The other task is to study the usage of an absorption refrigeration machine in a CCGT cycle to increase its energy efficiency. Calculations of the thermal scheme of a gas turbine were carried out using mathematical modeling, the steam turbine was calculated based on guidelines. The conducted studies allow to conclude that the use of an absorption refrigeration machine in the cycle of a combined-cycle plant can improve the efficiency of the unit, increasing profits from power generation, and reducing penalties for non-compliance with the load schedule.

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Section: Introductionmentioning

confidence: 99%

Study of the work and efficiency improvement of combined-cycle gas turbine plants

et al. 2019

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Simulation the operation of a combined-cycle gas turbine unit with an after burning device in a waste-heat recovery boiler

Mendeleev

Marin

Akhmetshin

2020

J. Phys.: Conf. Ser.

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One of the directions in the development of energy is the study and implementation of combined cycle plants. It is possible to solve a wide range of design and operation problems using mathematical models. A steam-gas power unit based on a GE 6FA gas-turbine unit was studied in this work. In this case, we considered a modernized thermal circuit with an afterburner. In this paper, we consider the method of parametric identification of a mathematical model of a gas turbine in a steady state. The steady-state is taken equal to 80 MW. The difficulty of creating mathematical models of combined-cycle power units is the organization of the computational process. Schematically, the structure of a mathematical model can be represented as a hierarchical set of software modules. The upper-level modules, based on the input data, organize a computational process that includes the organization of calls in the required sequence to the lower level modules in order to form a system of equations that determine the conditions for the combined operation of a combined cycle gas turbine unit. Dependences of changes in the main energy characteristics of a combined cycle plant are shown. Studies have shown the feasibility of using afterburning devices in the cycle of a combined cycle plant.

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Improving the efficiency of combined-cycle plant by cooling incoming air using absorption refrigerating machine

Mendeleev

Maryin

Akhmetshin

2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The purpose of the paper is to study and analyze the possibility of increasing the power of combined cycle gas turbine (CCGT) unit during the period of positive ambient temperatures. The other aim is to study usage of an absorption refrigerating machine in a CCGT cycle to increase its energy efficiency. The third aim is to analyze the operation of 110 MW combined-cycle power unit at various ambient temperatures, and to obtain alterations in the main CCGT characteristics when the ambient temperature changes. Calculations of the thermal scheme of a gas turbine were carried out using mathematical modeling, the steam turbine was calculated basing on the guidelines. The possibility of increasing the capacity of a CCP-110 MW was studied and analyzed. The conducted studies allowed us to conclude that the use of absorption refrigerating machine in the cycle of a combined-cycle plant can improve the efficiency of the unit, increase profits from power generation, and reduce penalties for non-compliance with the load schedule.

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Optimisation of Combined Cycle Gas Turbine Power Plant in Intraday Market: Riga CHP-2 Example

Cited by 7 publications

References 6 publications

Study of the work and efficiency improvement of combined-cycle gas turbine plants

Study of the work and efficiency improvement of combined-cycle gas turbine plants

Simulation the operation of a combined-cycle gas turbine unit with an after burning device in a waste-heat recovery boiler

Improving the efficiency of combined-cycle plant by cooling incoming air using absorption refrigerating machine

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