FIELD: nuclear engineering.
SUBSTANCE: invention relates to methods of NPP cyclic load capability and safety increasing. In operating mode during night-time electrical load dropout, gas turbine plant (GTP) 12 is switched off, auxiliary steam turbine unit 17 operates at reduced mode due to insignificant reduction of live steam consumption to main turbine plant 1. During electrical load peak hours GTP 12 is included into operation, outgoing gases are directed to waste heat boiler (WHB) 13. After feed pump 7 part of feed water is directed to WHB 13, is heated there and supplied by booster pump 14 to feed water circuit and, being mixed with main flow is supplied to steam generator. As a result of flow reduction through HPS 9 steam extractions from main steam turbine plant 1 for feed water heating are reduced. Excess steam produced due to reduction of flow for extractions, through steam distribution device 16 is directed to auxiliary steam turbine plant 17.
EFFECT: generation of additional energy at NPP in operating conditions by means of gas turbine and steam-turbine plants, capable of providing NPP house loads power supply during accident.
1 cl, 1 dwg
