Energy technology complexes as regulators of electrical power systems

Abstract

The aim of the work is to study the processes of electrothermal gasification of solid fuels in energy technological complexes and to assess the possibilities of using energy technological complexes for regulating load schedules of electric power systems. By the methods of mathematical and physical modeling of physicochemical processes of gasification of solid carbon- containing materials and energy conversion, the main characteristics of electro-technological complexes for the processing of solid carbon-containing materials are obtained. A technological scheme of a maneuverable consumer of electricity and power is proposed, allowing to participate in demand management and increase the efficiency of electric power systems, comprehensively process any solid types of fuels, and build municipal gasification systems for areas that do not have access to natural gas sources. It is shown that the energy potential of the synthesis gas obtained by thermoelectric gasification in electrode installations is several times higher than the cost of electricity for gasification. During the hours of maximum load of the power system, the electrothermal gasifier allows to significantly reduce the consumed active power due to the transition to the autothermal gasification mode without reducing the performance of synthesis gas and work in the “market of system services” as a regulated load. Electrotechnological electrode installation allows the use of cheap electric energy of nighttime minima for the production of synthesis gas and the recovery of ferroalloys from oxides of raw materials and ore materials to be added to the coal recovery process. Electrode electrothermal installation provides a wide range of regulation of consumed electrical power, good process controllability for any type of raw materials, including combustible solid waste. High-temperature reduction processes in electrothermal gasifiers make it possible to process fuel of any composition without enrichment and grinding, to convert the mineral part of solid fuel into slag, which can be used to produce building materials. The oxides of a number of metals contained in the mineral part of the fuel are reduced and form a ferroalloy.