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Method for determining at least one firing temperature for controlling a gas turbine and gas turbine for performing the method

A technology of gas turbine and combustion temperature, which is applied in the direction of gas turbine device, fuel control of turbine/propulsion device, machine/engine, etc.

Active Publication Date: 2014-12-24
ANSALDO ENERGIA IP UK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when using conventional methods of determining the combustion temperature, the control of the combustion temperature during operation with an adjusted coolant supply can lead to undesired deviations between the desired and the actual combustion temperature, ie due to Variation of operating lines of gas turbines (Betriebslinie)

Method used

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  • Method for determining at least one firing temperature for controlling a gas turbine and gas turbine for performing the method
  • Method for determining at least one firing temperature for controlling a gas turbine and gas turbine for performing the method
  • Method for determining at least one firing temperature for controlling a gas turbine and gas turbine for performing the method

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Embodiment Construction

[0029] The invention relates to the use of a control valve position measurement, a pressure measurement upstream and downstream of the control valve, a mass flow measurement of a cooling medium and / or a valve characteristic as input variables for determining the combustion temperature. Taking into account the advantages of the determination of the combustion temperature, as disclosed in documents EP 1 231 369 A2 and EP 1 959 115 A2 or US 2010 / 050591 A1, additional measurements are taken into account in addition to the measurement quantities applied there , in particular the position of the regulating valve (in the cooling line), the pressure ratio at the regulating valve and / or the corresponding valve characteristic.

[0030] Although the influence of the cooling air mass flow as a function of operating conditions (environment-limited and / or load-limited) has been studied in detail and is known sufficiently well for a fixed cooling air supply (see the mentioned document EP 1 23...

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Abstract

The invention relates to a method for determining at least one firing temperature for controlling a gas turbine (20) that comprises at least one compressor (12), at least one combustion chamber (13) and at least one turbine (15), compressed air being drawn off at the compressor (12) in order to cool the turbine (15) and being fed to the turbine (15) via at least one external cooling duct (17) and via a control valve (V) arranged in the cooling duct (17), in which method a plurality of temperatures and pressures of the working medium being measured in various positions of the gas turbine and the at least one firing temperature being derived from the measured temperatures and pressures. A more flexible and more accurate control is achieved additionally by determining the cooling air mass flow via the external cooling duct (17) and by taking said flow into account when deriving the at least one firing temperature.

Description

technical field [0001] The invention relates to the field of gas turbine technology. It relates to a method according to the preamble of claim 1 for determining at least one combustion temperature for the regulation of a gas turbine. The invention also relates to a gas turbine for carrying out the method. Background technique [0002] The combustion temperature is used as a control parameter in certain operating conditions (base load and part load) in gas turbines that are common today. Since a continuous and precise direct measurement of the combustion temperature over the entire operating life of the gas turbine is currently not feasible for reasons of reliability, mechanical integrity and accuracy, the level of the combustion temperature is determined by a number of measured process variables with the aid of The combustion temperature is determined by a method that is programmed into the gas turbine control logic (Steuerungslogik). [0003] Such a temperature determina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/18F02C9/00F02C9/28
CPCF02C7/18F02C9/00F02C9/28F05D2270/303F02C7/12
Inventor M. 阿里亚斯朝A. 内梅特U. R. 斯泰格D. S. 利利
Owner ANSALDO ENERGIA IP UK LTD