INCREASING THE SYSTEM EFFICIENCY OF CHPP AS A FACTOR OF TRANSITION TO RESOURCE-SAVING AND ENVIRONMENTALLY SAFE ENERGY INDUSTRY
THE PURPOSE.. Determination of the place of CHPP in the formation of resource-saving energy systems in the face of growing uneven energy consumption and the development of renewable energy sources. Improving the systemic efficiency of cogeneration in the context of growing demands on the flexibility and environmental friendliness of power plants. METHODS. Development and calculation of the parameters of the thermal scheme of a highly maneuverable GTU-CHPP in the Thermoflow software environment based on the initial data of the operational parameters of Russian-made gas turbines. RESULTS. Calculations have shown that the fuel heat utilization factor of a highly maneuverable GTU-CHPP during the heating period is 80-85%, and in the summer period in emergency mode it exceeds 53%. At the same time, high maneuverability characteristics are achieved, which allow operating the power plant in peak and semi-peak modes: the number of starts from 300 per year without changing the overhaul period; starting time up to 600 seconds (quick start up to 300 seconds); fuel consumption for start-up is less than 30 kg of fuel equivalent / MW; regulation range - 100% of available power. In comparison with separate production, the proposed thermal scheme of the GTU-CHPP in cogeneration mode in the peak part of the daily schedule of electrical loads showed a decrease in fuel consumption by up to 74.6% and NOx emissions by up to 60.8%. CONCLUSION. The introduction of 10 GW of highly maneuverable GTU-CHPPs within the UES of Russia will remove systemic restrictions on the loading of NPP power units and ensure a decrease in fossil fuel consumption by 19.6 million tons of fuel equivalent per year and CO2 and NOx emissions by 55 million tons and 24.7 thousand tons per year, respectively. It will also lead to a decrease in the marginal cost of electricity in the trading sector of the wholesale power market - the day-ahead market, and thus in the electricity tariff for consumers.