Investigation of the Operating Modes of a Cogeneration Gas Turbine Plant with Uncertainty in the Prices of Generated Energy Products and Various Climatic Operating Conditions

The authors have developed a methodology for conducting optimization studies of the operating modes of a cogeneration gas turbine plant, taking into account the determination of the dependence of the change in the price of one type of energy on the price of another type of energy. This approach helps to determine the options for technical solutions that ensure the competitiveness of the gas turbine plant relative to other heat and power generating plants and the most efficient option to choose. Two optimization problems are solved to determine the maximum and minimum boundaries of the heat price range: the problem of minimizing the energy price to determine the maximum heat price and the problem of minimizing the exergy price to find the minimum boundary of the heat price range. The problem of minimizing the price of electricity is solved for a given heat price and the rate of return on investment to build a Pareto-optimal set of solutions for the resulting price range. The results obtained can be used to select optimal technical solutions for construction and operation in regions with different climatic characteristics, that ensure the competitiveness of the products of this cogeneration gas turbine plant.