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Boiler furnace pressure control method and system based on FCB process

A pressure control, boiler furnace technology, applied in the control system, combustion method, control combustion and other directions, can solve the problems of large overshoot, long adjustment period, unstable boiler operation, etc., to reduce the adjustment period and solve the problem of excessive adjustment period. long effect

Active Publication Date: 2020-08-04
GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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Problems solved by technology

[0004] In view of this, this application provides a boiler furnace pressure control method and system based on the FCB process, which solves the problem that the existing boiler furnace pressure adjustment period is too long, which is prone to large overshoots, resulting in unstable operation of the boiler or A trip occurred, leading to a technical problem with the failure of the FCB of the coal-fired unit

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  • Boiler furnace pressure control method and system based on FCB process
  • Boiler furnace pressure control method and system based on FCB process
  • Boiler furnace pressure control method and system based on FCB process

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no. 1 example

[0063] The above is the first embodiment of a boiler furnace pressure control method based on the FCB process provided by the embodiment of the present application, and the following is the second embodiment of a boiler furnace pressure control method based on the FCB process provided by the embodiment of the present application, The second embodiment further illustrates the boiler furnace pressure control method based on the FCB process.

[0064] see Figure 4 , Figure 4 Another schematic flow chart of the boiler furnace pressure control method based on the FCB process provided in the embodiment of the present application, including:

[0065] Step 201, after the FCB action of the unit, obtain the boiler target load value corresponding to the FCB action.

[0066] Step 201 in this embodiment is the same as step 101 in the first embodiment, for details, please refer to step 101 in the first embodiment, which will not be repeated here.

[0067] Step 202: Determine the total a...

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Abstract

The invention discloses a boiler furnace pressure control method and a boiler furnace pressure control system based on an FCB process. The method comprises the steps of obtaining the target load valueof a boiler corresponding to an FCB action after a unit generates the FCB action; determining the total air volume target value of the boiler according to the target load value of the boiler; configuring the total air volume target value as the current total air volume value of the boiler; respectively receiving feedforward signals from a total air volume control system and a fuel quantity control system of the boiler to a furnace pressure control system of the boiler; and controlling the furnace pressure of the boiler according to the total air volume target value and the feedforward signals. The technical problems that an existing boiler furnace pressure adjusting period is too long, the large-amplitude over-adjusting phenomenon is prone to being generated, consequently, a boiler is unstable in operation or suffers from tripping operation, and the FCB of a coal-fired unit fails are solved.

Description

technical field [0001] The present application belongs to the technical field of automatic control, and in particular relates to a boiler furnace pressure control method and system based on FCB process. Background technique [0002] The FCB (Fast Cut Back) function refers to the rapid reduction of the boiler load and stable combustion when the unit instantly throws off all the external power supply load after the power grid fails to decommission, so as to ensure that the generator is used to keep the generator uninterrupted. It is equipped with the automatic control function of running on isolated power grid or shutting down without stopping the furnace. When the coal-fired unit encounters the FCB action, the coal-fired unit will quickly switch to the program of responding to the FCB. In the program of responding to the FCB, the load of the generator set is quickly reduced, and the mechanical steam system in the coal-fired unit correspondingly reduces the load on the boiler....

Claims

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Application Information

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IPC IPC(8): F22B35/00F23K1/00F23N1/02
CPCF22B35/00F23K1/00F23N1/022
Inventor 黄卫剑刘昌一邓少翔潘凤萍朱亚清庞志强陈华忠肖黎
Owner GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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