Methods and apparatus to optimize steam header blending and gas turbine loading in combined cycle power plants
A combined cycle power generation and gas turbine technology, which is applied to gas turbine devices, steam engine devices, electromechanical devices, etc., and can solve problems such as non-recycling and efficiency loss
Active Publication Date: 2017-02-01
EMERSON PROCESS MANAGEMENT POWER & WATER SOLUTIONS
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Excess bypass steam causes loss of efficiency because bypass steam is not used by the steam turbine and is therefore waste heat that cannot be recovered
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0011] As a by-product of power generation, gas turbines produce exhaust gases. In combined cycle power plants, exhaust gas is routed through a heat recovery steam generator (HRSG) (where the HRSG generates steam by using the exhaust gas to heat water) rather than being considered waste and removed through the exhaust stack. The steam is directed into or mixed with steam at the steam turbine header where it is used by generators associated with the steam turbine to generate electricity.
[0012] The steam directed to the steam turbine via the HRSG should exhibit certain pressure and temperature characteristics. For example, the pressure, temperature, and / or enthalpy (i.e., a function of pressure and temperature) values of steam generated via the HRSG should be correlated with the steam turbine header or the steam turbine's steam line (e.g., a source where, from The steam generated in the exhaust gases from one or more steam turbines is received into the steam turbines) to s...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to methods and apparatus to optimize steam header blending and gas turbine loading in combined cycle power plants. Methods and apparatus to optimize ramp rates in combined cycle power plants are disclosed herein. An example method disclosed herein includes predicting a first setpoint for a gas turbine in a combined cycle power plant over a prediction horizon and predicting a second setpoint for a steam generator over the prediction horizon. The example method includes identifying a first steam property of steam generated by the steam generator in the combined cycle power plant based on the second setpoint. The example method includes comparing the first steam property to a second steam property of steam associated with a steam turbine in the combined cycle power plant and dynamically adjusting at least one of the first setpoint or the second setpoint based on the comparison.
Description
technical field [0001] In general, the present disclosure relates to combined cycle power plants, and more particularly, to methods and apparatus for optimizing steam header mixing and gas turbine loading in combined cycle power plants. Background technique [0002] A combined cycle power plant (eg, a combined cycle gas turbine plant) includes at least one gas turbine and a steam turbine. In a combined cycle power plant, the exhaust gas produced by the gas turbine is captured by a heat recovery steam generator (HRSG), which generates steam from the thermal energy in the exhaust gas. The steam is provided to the steam turbine, thereby providing increased efficiency of the power plant in generating electricity through multiple thermodynamic cycles while reducing fuel costs. [0003] While providing exhaust gas from the gas turbine to the steam turbine provides an additional source of electrical power, the pressure and temperature of the steam provided to the steam turbine via...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F01K13/02
CPCF01K13/02F05D2270/301F05D2270/303F01K15/00F01K23/101F02C6/18H02K7/1823F05D2220/72F05D2270/44Y02E20/16G05B13/04
Inventor R·R·姚X·程F·C·赫夫J·N·亚当斯
Owner EMERSON PROCESS MANAGEMENT POWER & WATER SOLUTIONS