Gas turbine fuel pressure control method and gas turbine fuel pressure control system

A technology of fuel pressure and gas turbine, which is applied in the direction of gas turbine devices, mechanical equipment, jet propulsion devices, etc., and can solve problems such as inability to achieve control effects

Active Publication Date: 2015-07-01
CHINA UNITED GAS TURBINE TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0003] Since the gas turbine control system is a multi-variable, strong interference and parameter time-varying system, at the same time, in the process of tuning the traditional PID parameters, its setting value has the optimal value in a certain area, not the

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  • Gas turbine fuel pressure control method and gas turbine fuel pressure control system
  • Gas turbine fuel pressure control method and gas turbine fuel pressure control system
  • Gas turbine fuel pressure control method and gas turbine fuel pressure control system

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Embodiment Construction

[0032] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0033] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0034] Such as figure 1 As shown, the gas turbine fuel pressure control method according to an embodiment of the present invention includes:

[0035] S1, compare the pressure reference value with t...

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Abstract

The invention relates to a gas turbine fuel pressure control method and a gas turbine fuel pressure control system. The method comprises the following steps: S1. comparing a pressure reference value with a pressure measured value to obtain a pressure error, and carrying out differential operation on the pressure error to obtain a change rate of the error; S2. carrying out blurring operation on the error and the change rate of the error to obtain a PID parameter variation; S3. correcting an original PID parameter value according to the PID parameter variation to obtain a corrected PID parameter value; S4. carrying out PID operation according to the corrected PID parameter value to obtain target valve opening; and S5. regulating the opening degree of a speed ratio valve according to the target valve opening and actual valve opening. By combining blurring control with PID, the adaptability and the robustness of pressure control are improved, the parameter self-tuning is achieved, and when control parameters in a gas turbine are changed, the pressure of the gas turbine still can be regulated accurately, so that a good control effect can be obtained.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a gas turbine pressure control method and a gas turbine pressure control system. Background technique [0002] The gas turbine is an impeller-type power machine that uses gas and liquid as fuel to convert the heat released during fuel combustion into useful work and can rotate at high speed. It controls the increase or decrease of the speed and load by changing the amount of fuel. The adjustment of the fuel volume is accomplished through the speed ratio valve and the control valve. The speed ratio valve adjusts the pressure, and the control valve adjusts the flow. In order to adjust the flow into the combustion chamber only by changing the opening of the control valve after full speed and no load, the pressure before the control valve should be kept constant, that is, the speed ratio valve should be adjusted to keep the fuel pressure behind the valve constant. [0003] Sin...

Claims

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Application Information

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IPC IPC(8): F02C9/00
Inventor 赵碧徽
Owner CHINA UNITED GAS TURBINE TECH CO LTD
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