Way of warm and cold for steam supply combined cycle power plant and a combined cycle power plant

摘要

PROBLEM TO BE SOLVED: To provide a combined cycle power generation plant and a warming and cooling steam supply method of a combined cycle power generation plant for supplying steam for warming to a steam turbine during gas turbine load increasing in cold start, supplying steam for cooling to the steam turbine in re-intrusion after load shutdown, and supplying steam for cooling to the steam turbine during the no-ventilation operation after load shutdown.;SOLUTION: This combined cycle power generation plant is provided with an auxiliary steam system 39 for supplying steam from the outside to an intermediate gland packing 51 disposed between a high pressure turbine 21 and a medium pressure turbine 22 of a stem turbine plant 24.;COPYRIGHT: (C)2002,JPO