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Turbogenerator main throttle valve opening predication control method based on delaying observer

A technology of turbogenerator and time-delay observer, which is applied in the direction of adaptive control, general control system, control/regulation system, etc. It can solve the problems of not having robustness to parameter and model changes, non-matching uncertainty, powerlessness, etc. question

Active Publication Date: 2015-07-29
GUODIAN SCI & TECH RES INST +1
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  • Abstract
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Problems solved by technology

However, these methods are not robust to parameter and model changes, and are powerless against mismatch uncertainties in the system

Method used

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  • Turbogenerator main throttle valve opening predication control method based on delaying observer
  • Turbogenerator main throttle valve opening predication control method based on delaying observer
  • Turbogenerator main throttle valve opening predication control method based on delaying observer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0131] Embodiment (1) Realize the accuracy and rapidity of turbine generator power angle tracking.

Embodiment approach ( 1

[0133] Step 1: Analysis and modeling of turbogenerator main steam valve opening control system

[0134] The closed-loop control system adopts a negative feedback control structure, and the output is the power angle of the turbogenerator. The designed closed-loop control system mainly includes two parts: the controller link and the system model, and its structural layout is shown in figure 2 shown.

[0135] The main valve opening control system model is described as follows:

[0136] δ · = ω - ω 0 ω · = - D H ...

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Abstract

A turbogenerator main throttle valve opening predication control method based on a delaying observer is provided. The method comprises the following four steps: step 1: analyzing and modeling a turbogenerator main throttle valve opening control system; step 2: designing turbogenerator main throttle valve opening predication control; step 3: designing the delaying observer; and step 4: finishing the design. Aiming at a main throttle valve opening control system model, a control principle with a closed analytical solution is designed, and the output delaying observer is designed to correct a measured signal, so that the overall stability of a closed loop control system is guaranteed under the time varying delaying condition; meanwhile, the rapid and accurate tracking of a pre-set track by a power angle of a turbogenerator is realized.

Description

technical field [0001] The invention relates to a method for predicting and controlling the opening of the main steam valve of a turbogenerator based on a time-delay observer. The door opening predictive control method is used for controlling the power angle of a steam turbine generator and belongs to the technical field of automatic control. Background technique [0002] Excitation control and steam valve adjustment of turbogenerator are two important means to improve the stability of power system. Since the excitation control is limited by the top value of the excitation current, requiring the generator to have an excessively high top value of the excitation current will increase the manufacturing cost of the generator; at the same time, the rising speed of the excitation current of the generator will also be limited by the time constant of the excitation winding. Therefore, it is limited to improve the stability of the system only relying on the excitation control. With...

Claims

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Application Information

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IPC IPC(8): G05B13/04
Inventor 陈宝林韩璞刘志杰刘金琨董泽华山
Owner GUODIAN SCI & TECH RES INST
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