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Gas turbine unit power frequency adjustment control method and device

A technology of regulation control and power regulator, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of low load regulation accuracy and poor primary frequency regulation performance, so as to solve the problem of poor primary frequency regulation performance and realize the Fast compensation, improving the effect of AGC and primary frequency modulation performance

Active Publication Date: 2022-01-07
华能南京燃机发电有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a gas turbine unit power frequency adjustment control method and device, and solve the technical problems of low load adjustment accuracy and poor primary frequency regulation performance of the gas turbine unit power frequency system

Method used

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  • Gas turbine unit power frequency adjustment control method and device
  • Gas turbine unit power frequency adjustment control method and device
  • Gas turbine unit power frequency adjustment control method and device

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Embodiment 1

[0051] Such as figure 2 As shown, the embodiment of the present invention provides a power frequency regulation control method for a gas turbine unit, the following steps include:

[0052] Step 1. Obtain the rotational speed reference correction incremental command, and perform integral multiple fixed-point through the rotational speed reference correction incremental command in the output feasible space of the main loop power regulator, and obtain the predicted rotational speed reference correction incremental command vector.

[0053] (1) The output feasible space of the main loop power regulator is:

[0054]

[0055] Among them, ΔTNR spr (k) is the incremental command for speed reference correction at time k in the sampling period, max( ) and min( ) are the functions of taking the maximum value and minimum value respectively, and are the lower limit and upper limit of the speed reference correction command respectively, and are the minimum and maximum increments o...

Embodiment 2

[0083] An embodiment of the present invention provides a power frequency adjustment control device for a gas turbine unit, including a processor and a storage medium;

[0084] The storage medium is used to store instructions;

[0085] The processor is configured to operate in accordance with the instructions to perform the steps according to any one of the methods described above.

[0086] In summary, such as image 3 As shown, the power frequency adjustment control method and device of a gas turbine unit provided by this application replace the main regulator (power controller PID) in the traditional power frequency adjustment system of a gas turbine unit with power control simplified predictive control, and the auxiliary regulator The speed controller (speed controller P) is replaced by the speed control ADRC. This method can significantly improve the AGC and primary frequency regulation performance of the gas turbine unit, effectively reduce the maximum dynamic deviation o...

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Abstract

The invention discloses a gas turbine unit power frequency adjustment control method and device. The method comprises the steps of obtaining a rotating speed reference correction increment instruction, carrying out the integral multiple point fixing in a feasible space through the rotating speed reference correction increment instruction, and obtaining a predicted rotating speed reference correction increment instruction vector, acquiring a gas turbine load measured value and a total disturbance quantity, and inputting the measured value and the total disturbance quantity into a pre-constructed prediction model in combination with the predicted rotating speed reference correction increment instruction vector to obtain a gas turbine load predicted value, acquiring a gas turbine unit load reference set value, and calculating a rotating speed reference correction increment instruction output by a main loop power regulator in combination with the gas turbine load predicted value, acquiring a rotating speed reference set value and a rotating speed reference measured value of the gas turbine unit, and combining and inputting a rotating speed reference correction increment instruction output by a main loop power regulator into an auxiliary loop rotating speed regulator to calculate and obtain a fuel reference instruction. The problems of low load regulation precision and poor primary frequency modulation performance of the gas turbine unit power frequency system can be solved.

Description

technical field [0001] The invention relates to a power frequency regulation control method and device of a gas turbine unit, belonging to the technical field of power plant thermal power engineering. Background technique [0002] The control target of the power frequency regulation control system of the gas turbine unit is to adjust the power and speed of the gas turbine unit, and perform AGC and primary frequency regulation control after grid connection. It is one of the key control systems for load regulation of the gas turbine unit. At present, the most typical power-frequency control methods of gas turbine units adopt the traditional cascade control technology (see attached figure 1 shown), the main circuit is a power regulator, and the secondary circuit is a speed regulator. [0003] The traditional power frequency control method of gas turbine unit has the following two problems: [0004] (1) The traditional PID regulator used in the main circuit of the gas turbine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 王开柱谭峰焦道顺朱静奚新国孙魏崔晓波薛锐
Owner 华能南京燃机发电有限公司
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