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Control method for overcoming fluctuations in main steam pressure in multi-coal mixed firing conditions of heating units

A technology of main steam pressure and heating unit, applied in the direction of adaptive control, general control system, control/regulation system, etc., to achieve good real-time performance, ensure stability, and reduce labor intensity

Active Publication Date: 2018-04-06
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0005] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a control method for overcoming main steam pressure fluctuations in the multi-coal mixed combustion working condition of the heating unit. The problem of automatic pressure control, give full play to the potential of the equipment, and ensure the stability of the main parameters while meeting the requirements of frequency regulation and peak regulation of the power grid

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  • Control method for overcoming fluctuations in main steam pressure in multi-coal mixed firing conditions of heating units
  • Control method for overcoming fluctuations in main steam pressure in multi-coal mixed firing conditions of heating units
  • Control method for overcoming fluctuations in main steam pressure in multi-coal mixed firing conditions of heating units

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Embodiment Construction

[0026] The invention is a control method for overcoming the main steam pressure fluctuation in the multi-coal co-combustion working condition of the heating unit, such as figure 2 shown, including the following steps:

[0027] Step 1: Add the following loop interfaces to the control logic configuration of the DCS distributed control system of the heating unit: control loop interface for coal feeding to overcome main steam pressure fluctuation, primary air volume control loop interface to overcome main steam pressure fluctuation, overcome main steam pressure Fluctuation main steam pressure setting value control loop interface, overcoming main steam pressure fluctuation steam turbine high pressure valve control loop interface;

[0028] Step 2: Carry out the following configuration in the control logic of the DCS distributed control system of the heating unit: carry out the logic configuration of the control loop for overcoming the fluctuation of the main steam pressure, and int...

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Abstract

The present invention involves a multi -coal -type mixed working condition of heating units to overcome the main steam pressure fluctuation control method. The steps are as follows: Increase the following circuit interface in the control logic configuration of DCS of the heating unit decentralized control systemGive the coal volume control loop interface, overcome the air volume control circuit interface of the main steam pressure fluctuations, overcome the main steam pressure fluctuation of the main steam pressure setting value control loop interface, and overcome the main steam pressure fluctuating steam turbine high -pressure door control loop interface;In the control logic of the control system DCS, the heating unit multi -coal type mixed work conditions overcome the main steam pressure fluctuation logic configuration, and the output is introduced to the main steam pressure fluctuation circuit interface;In real -time running curve, the multi -coal type of the heating units of the heating units is the same as the mixed coal type of the heating unit overcome the relevant parameters of the control circuit of the main steam pressure fluctuations, and finally achieve the expected control effect.The invention coordinate the control system through the existing heating unit DCS DCS. It is good in real -time and the on -site debugging process is simple to facilitate the implementation of the project.

Description

technical field [0001] The invention belongs to the technical field of automatic control of thermal power generating units, and in particular relates to a control method for overcoming main steam pressure fluctuations in a heating unit under a multi-coal mixed combustion condition. It can be used for automatic control of the main steam pressure of the heating thermal power unit during the actual operation, ensuring that the unit can automatically control the main steam pressure within a reasonable range while the load response is fast and stable. Background technique [0002] The operating conditions of heating thermal power units are changeable, including pure condensing steam conditions, industrial extraction steam conditions, heating extraction steam conditions, and simultaneous industrial extraction steam and heating extraction steam conditions. The operating characteristics of the heating unit under different working conditions are different, and the requirements for th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
Inventor 姚远李建军宋圣军韩月王洪凯
Owner STATE GRID CORP OF CHINA
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