Parametric analysis of maneuvering operating modes of thermal power plants under conditions of excess capacity in the energy system

Currently, in the structure of covering the daily maximum electricity consumption of the republic, the share of generation from two nuclear power units can reach about 45 %. The regulation range of thermal power plants is almost fully utilized and is insufficient to balance the energy system; there is an excess of generation over consumption. To eliminate the imbalance during nighttime and to implement measures for disconnecting generating equipment depending on the magnitude of this imbalance, it is necessary to analyze various options and combinations of equipment to be taken offline as reserve at power plants. In the context of the investment crisis and sanctions, which prevent the full replacement and modernization of power plant equipment approaching the end of its operational life, the problem of ensuring the reliability and cost-effectiveness of thermal power equipment becomes especially urgent. Аn approach is proposed to solve the problem of optimizing the reliability and cost-effectiveness of power systems operating in maneuvering modes, using the equipment of state district power plants as an example. A generalized function has been derived, incorporating several parameters to select a rational balance and mutual influence between the reliability and efficiency of electricity generation, with the participation of thermal power plant equipment in regulating the daily load profile. The proposed methodology is an effective tool for assessing the suitability of equipment for operation under specified modes. The mathematical model allows for consideration of multiple factors, making the analysis more accurate and well-founded, thereby ensuring the selection of optimal solutions to improve the efficiency of equipment operation under various conditions.