Energy efficient heat supply system for electric power facilities

Abstract

The aim of the work is to confirm the possibility of creating an energy-saving heat supply system for power facilities by using computer modelling, analysis of the potential use of heat losses of electromagnetic energy in magnetic circuits and windings of transformers of substations, as well as the development of schemes for heat recovery losses for heat supply of power facilities. Computer simulation of electromagnetic and thermophysical processes in the power oil-filled transformer is carried out. Energy losses in windings, hysteresis and eddy currents in the magnetic circuit, as well as temperature and heat flux fields in the longitudinal and transverse sections of the oil-filled power transformer in idle and short-circuit modes were determined. The transformer performance in terms of heat recovery losses was evaluated. The possible volumes of heat extraction for heat supply depending on the power of the transformer are determined. The automated oil-water system of heat recovery of the transformer for heating of electric power facilities is proposed. The significance of the obtained results for the construction industry is to confirm the possibility of creating an energy-saving heat supply system for electric power facilities while maintaining the operational characteristics of the transformer based on computer modelling; the significant potential of using the heat loss of power transformers of substations is shown, an automated heat supply system for electric power facilities is proposed.

Technical and Economic Assessment of Supermarket and Power Substation Waste Heat Integration into Existing District Heating Systems

“…Furthermore, they estimated that the available waste heat capacity of a 150 MVA power transformer is around 450 kW. Gilfanov et al [37] carried out a detailed numerical analysis of electromagnetic and thermophysical processes in the power oil-filled power transformer. They obtained the temperature and heat flux fields of the transformer and calculated the potential waste heat, which could be utilized for the heating purposes of a building.…”