A combined cycle power plant comprises a gas turbo group and a water/steam circuit A liquid atomization device is arranged, upstream of the compressor, in the intake duct of the gas turbo group. The liquid under pressure, which is intended to be injected into the compressor inflow, is branched off f
A combined cycle power plant comprises a gas turbo group and a water/steam circuit A liquid atomization device is arranged, upstream of the compressor, in the intake duct of the gas turbo group. The liquid under pressure, which is intended to be injected into the compressor inflow, is branched off from the water/steam circuit.
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The invention claimed is: 1. A power plant, comprising: a gas turbo group and a water/steam circuit which includes a steam turbine, a waste heat recovery steam generator arranged downstream of a turbine of the gas turbo group, a condenser arranged downstream of the steam turbine, a pump arranged do
The invention claimed is: 1. A power plant, comprising: a gas turbo group and a water/steam circuit which includes a steam turbine, a waste heat recovery steam generator arranged downstream of a turbine of the gas turbo group, a condenser arranged downstream of the steam turbine, a pump arranged downstream of the condenser and upstream of the waste heat recovery steam generator, and an inflow duct arranged upstream of a compressor of the gas turbo group for air flowing into the compressor, in which inflow duct an atomization device for a liquid is arranged, wherein a first branch line branches off from the water/steam circuit at a first point of the water/steam circuit, a second branch line branches off from the water/steam circuit at a second point located downstream of the first point in the water/steam circuit, and both branch lines issue in a common supply line leading to the atomization device. 2. The power plant as claimed in claim 1, wherein the first point is arranged upstream of the waste heat recovery steam generator, and the second point is arranged in the waste heat recovery steam generator or downstream of the latter. 3. The power plant as claimed in claim 1, wherein the branch lines issue into a mixing preheater, the outflow of which leads to the supply line. 4. The power plant as claimed in claim 1, wherein the first point is selected such that liquid water is present at the branch point in the flow path, and the second point is selected such that steam is present at the branch point in the flow path. 5. The power plant as claimed in claim 1, wherein at least one of the branch lines has a shut off and/or throttle member. 6. A power plant, comprising: a gas turbo group and a water/steam circuit which includes a steam turbine, a waste heat recovery steam generator arranged downstream of a turbine of the gas turbo group, a condenser arranged downstream of the steam turbine, a pump arranged downstream of the condenser and upstream of the waste heat recovery steam generator, and an inflow duct arranged upstream of a compressor of the gas turbo group for air flowing into the compressor, in which inflow duct an atomization device for a liquid is arranged, wherein at least one line leading to the atomization device branches off from the water/steam circuit downstream of the pump, and wherein a pressure regulating valve for regulating the atomization admission pressure is arranged in the at least one line leading to the atomization device. 7. The power plant as claimed in claim 1, wherein a cooler is arranged in the supply line. 8. A method for operating a power plant having a gas turbo group and a water/steam circuit which includes a steam turbine, a waste heat recovery steam generator arranged downstream of a turbine of the gas turbo group, a condenser arranged downstream of the steam turbine, a pump arranged downstream of the condenser and upstream of the waste heat recovery steam generator, an inflow duct arranged upstream of a compressor of the gas turbo group for air flowing into the compressor, in which inflow duct an atomization device for a liquid is arranged, wherein a first branch line branches off from the water/steam circuit at a first point of the water/steam circuit, a second branch line branches off from the water/steam circuit at a second point located downstream of the first point in the water/steam circuit, and both branch lines issue in a common supply line leading to the atomization device, the method comprising the steps: supplying a first, nonpreheated part mass flow through the first line to the common supply line; supplying a second, preheated part mass flow through the second line to the common supply line; and varying at least one of the part mass flows. 9. The method as claimed in claim 8, comprising the further steps of cooling the mass flow in the common supply line and of varying the cooling capacity. 10. A method for operating a power plant having a gas turbo group and a water/steam circuit which includes a steam turbine, a waste heat recovery steam generator arranged downstream of a turbine of the gas turbo group, a condenser arranged downstream of the steam turbine, a pump arranged downstream of the condenser and upstream of the waste heat recovery steam generator, an inflow duct arranged upstream of a compressor of the gas turbo group for air flowing into the compressor, in which inflow duct an atomization device for a liquid is arranged, wherein a first branch line branches off from the water/steam circuit at a first point of the water/steam circuit, a second branch line branches off from the water/steam circuit at a second point located downstream of the first point in the water/steam circuit, and both branch lines issue in a common supply line leading to the atomization device, the method comprising: arranging a cooler in the supply line, and varying the cooling capacity of the cooler. 11. The method as claimed in claim 8, comprising the further steps: measuring at least one of the following temperatures: temperature of the liquid to be atomized and temperature in the inlet of the compressor of the gas turbo group; varying in a regulated manner at least one part mass flow and/or the cooling capacity with the measured temperature as the regulating variable. 12. The power plant as claimed in claim 6, wherein a cooler is arranged in the at least one line.
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