FIELD: power engineering.
SUBSTANCE: invention relates to power station and method of power generation basing on principle of combination of cycles providing higher specific capacity and flexibility of operating parameters of power station without corresponding increase of its thermal power rating. Process of improving thermal efficiency of combination cycles can be provided owing to use additional fuel and/or supply of heat. Particularly, gas turbines whose exhaust gases are delivered into steam generator for regeneration of heat can be additionally heated. Proposed system, as a whole, provides high efficiency of power station with combination of cycles mainly owing to Rankine (lower) cycle. Models of implementation of invention include load driven by engine of upper cycle set into action by liquid from upper cycle delivered into heat regeneration device. Said heat regeneration device is heated by additional fuel and/or from additional heat source to form higher energy consuming liquid of lower cycle and/or increase of amount of said liquid used as energy source for engine of lower cycle setting into motion load (potentially the same load as that in engine of upper cycle). Energy of liquid of upper cycle and liquid of lower cycle sets into action engines of upper and lower cycles, respectively, however, said liquids and/or exhaust of corresponding engines can found wide application at combined generation of heat and electric energy.
EFFECT: considerable increased of power rating of steam turbines and total efficiency of power station.
33 cl; 51 dwg
