Efficiency of using the storage properties of heat networks and buildings to expand the regulatory range for the supply of electricity at thermal power plants.

Expansion of the regulatory range for the supply of electricity at combined heat and power plants (CHPPs) is a very important task today. In winter, this becomes especially relevant. This problem can be solved by complete or partial bypass of network water heaters, the use of sliding pressure in the heat extraction and daily regulation of heat supply from the CHPPs [1]. Peak aggregates and installations are created. Here we consider such a flexible reserve as the expansion of the regulation range for the supply of electricity to CHPPs through the use of the storage properties of heat networks and buildings. At night (during the charging period), the electric power is reduced due to the supply of fresh steam from the boiler to the upper network heaters, or to an additional boiler unit (ABU). During the day (during the discharge period), the storage capacity of heating networks and buildings allows you to get additional electrical power by reducing the thermal power of the upper network heater. The criterion for evaluating the efficiency of using the storage properties of heat networks and buildings to expand the regulation range for the supply of electricity at CHPPs is the difference between the proceeds from the sale of electricity in the mode with accumulation and in the mode without accumulation, taking into account the costs of operating an additional pump at night in the mode with accumulation. To calculate the revenue from the sale of peak energy for these systems, the ranges of values for two-part and three-part rates were taken. The decrease in the production of thermal energy in the daytime by the heating plant should not violate the comfortable microclimate conditions in the heated premises. Calculations according to the method proposed earlier by the authors confirmed the observance of comfortable conditions in a heated room when using the storage properties of heating networks and buildings. [ABSTRACT FROM AUTHOR]