Влияние реальных режимов работы теплофикационной турбины Т-100/120-130 на отпуск тепла и электроэнергии

Abstract

Рассмотрены режимы эксплуатации энергоблоков № 1 и № 2 ПАО «Харьковская ТЭЦ-5» с теплофикационными турбинами Т-100/120-130 и проанализировано их влияние на отпуск тепла и электроэнергии потребителю согласно температурному графику теплосети в разные периоды года. Показано, что отпуск тепловой энергии энергоблоком определяется температурным потенциалом сетевой воды и ее расходом, а количество тепла зависит от температурной разности между прямой и обратной магистралью.To provide the district heating the cogeneration turbines of high power of a T-100/120-130 type are used as a thermal energy source for the heating system. The heat is supplied according to the temperature chart. At the present time significant deviations in the temperature mode of the thermal energy consumption from the temperature chart are observed due to the changing conditions of the heat consumption; this fact requires to analyze the influence of the modes of the heat supply on the change of the thermal load of the turbine and that of the input of the delivery water in the heating system on the effectiveness of the energy block operation. Based on the analysis of the heat supply by the turbines of the energy blocks No 1 and 2 of the PJSC "KHARKOV Thermal Power Plant (TPP-5)" and the equivalence of the temperature potentials of the forward and return delivery water the methodological approach to the determination of the turbine operation mode depending on the quantity of heat input in the heating system, its temperature potential and the heating system water consumption was proposed. The determined temperature difference of the forward and return heat-supply water correlates well with the temperature of the forward delivery water and allows for the estimation of the electric power of the energy block at different modes of its operation in the regulated range of the live steam rate.