Combined gas/steam power station plant

A combined gas/steam power station plant, comprising:

• a gas turbine group including a low pressure compressor driven by a low pressure turbine and a high pressure compressor driven by a high pressure turbine;
• the low pressure compressor being connected upstream of the high pressure compressor, the high pressure compressor being connected upstream of the high pressure turbine, and the high pressure turbine being connected upstream of the low pressure turbine;
• a first combustion chamber connected downstream of the high pressure compressor and upstream of the high pressure turbine for generating hot gas for driving the high pressure turbine;
• a second combustion chamber connected downstream of the high pressure turbine and upstream of the low pressure turbine for generating hot gas for driving the low pressure turbine;
• the low pressure compressor, low pressure turbine and second combustion chamber comprising a basic unit, and the high pressure compressor, high pressure turbine and first combustion chamber comprising a pressure increasing unit;
• an exhaust heat boiler connected downstream of the low pressure turbine for generating steam from heat of the discharge of the low pressure turbine;
• a steam turbine connected to the exhaust heat boiler for receiving steam from the boiler for driving the steam turbine;
• an intercooler interposed between the low pressure compressor and the high pressure compressor for cooling compressed air before entry into the high pressure compressor;
• and,
• an evaporator connected to the intercooler for generating steam from heat removed from the compressed air, said evaporator connected to the steam turbine independently of the exhaust heat boiler for delivering steam for driving the steam turbine.