Підвищення маневрених можливостей енергетичної системи шляхом впровадження теплових насосів-регуляторів у складі ТЕЦ

• Datum: 2013
• Hauptverfasser: Dubovskoy S.V., Levchuk A.P., Kadenskiy N.Y.
• Format: Artikel
• Sprache: Ukrainian
• Veröffentlicht: General Energy Institute of the National Academy of Sciences of Ukraine 2013
• Schlagworte: ОЕС України; графік електричних навантажень; оптовий ринок електричної енергії; електротеплові споживачі-регулятори; тепловий насос; ТЕС; ТЕЦ.
• Online Zugang: https://systemre.org/index.php/journal/article/view/502
• Назва журналу: System Research in Energy

Despite implementation of economic incentives for consumers and electricity producers aimed at equalizing and controlling the electrical load curves (ELC) in the united power system of Ukraine, a stable tendency for their sharpening is observed. The fact leads to increase of costs for compaction and regulation of ELC, making up to 35% of the whole CHP production volume, that is 14,85 billion hrivnas. In addition, there are noticeable hidden losses connected with decrease in resource, reliability and efficiency of regulating power units due to constant operation in cyclic modes.To find a way out of the existing situation more effective additional measures for compaction and regulation of ELC, if compared with economical incentives, must be taken. As one of the measures, the article proposes creation of a specialized system of heat pump controllers (HPC) of variable capacity, managed by the power system, integrated into the technological scheme of the CHP.Unlike electrothermal accumulative consumer controllers of individual location, using direct transformation of electric energy into heat or heat pumps at natural sources of low capacity, implementation of HPR at CHP does not require creation of thermal high-capacity batteries, any extra power infrastructure, networks or reserve sources of heat, technological communication and management. In addition, the HPC of this type can use a CHP’s heat losses as sources of low-potential heat, which ensures a favorable increasing of HPC’s coefficient of performance with rising of demand for thermal energy. It is shown that HPR integration with CHP provides a tangible effect on strengthening of HPR regulatory impacts due to the corresponding changes in the electric and thermal power capacity of CHP cogeneration units. According to the estimates, carried out by a specially developed technique based upon the energy characteristics of different types of CHP, the gross changes in the regulating capacity of CHP and HPR may exceed 3 to 6 times the HPR only regulating capacity. The strengthening effect grows with increase of initial steam parameters of CHP. The calculations of the technical potential of the regulating capacities of CHP with HPC of different initial pressure stages, ready to be involved into stabilization and regulation of ELC in Ukraine, which is rated at 3000 MW in winter and in 1000 MW in summer, were carried out on the basis of the obtained strengthening coefficients of the regulatory impacts. At this the required HPR capacity is evaluated in some 860 MW. This indicates the possibility of a significant increase in the power system’s manoeuvrability at the cost several times lower if compared with individual use of HPR.