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The operation method of the induced draft fan pid controller feed-forward logic optimization configuration control system

A logic optimization and configuration control technology, which is applied in electric controllers, controllers with specific characteristics, and combustion control, can solve problems such as insufficient response time, and achieve the effect of avoiding unit shutdown and reducing output

Active Publication Date: 2020-03-06
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Problems solved by technology

The program response time is insufficient

Method used

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  • The operation method of the induced draft fan pid controller feed-forward logic optimization configuration control system
  • The operation method of the induced draft fan pid controller feed-forward logic optimization configuration control system
  • The operation method of the induced draft fan pid controller feed-forward logic optimization configuration control system

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0018] Example.

[0019] see Figure 1 to Figure 3 .

[0020] In the prior art, the balance block and the F(x) function block are established first, and the PID output command of the blower is converted through the F(x) function block. The converted PID output command of the blower is used as the feedforward of the PID controller 1, and is controlled by the PID The pin FF of device 1 is transmitted to PID controller 1, and the deviation between the set value of the furnace pressure and the actual value of the furnace pressure is calculated by the PID controller and then output to the balance weight. device. In the comparison group of this embodiment, the balance block inputs the command of the induced fan rotor b...

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Abstract

The invention relates to an operating method of an induced draught fan PID controller feedforward logic optimization configuration control system. The operating method comprises the steps that a balance bock and an F(x) function block are established, an SFT switching block and a sigma addition block are established, wherein establishment of the F(x) function block comprises the sub-steps of establishing an F(x)1 function block and establishing an F(x)2 function block, a supply fan PID output instruction is converted through the F(x)2 function block, an actual power signal is converted through the F(x)1 function block, and the converted actual power signal is transmitted to the SFT switching block to process; and the actual power signal processed by the SFT switching block and the supply fan PID output instruction converted through the F(x)2 function block are added together through the sigma addition block, the sigma addition block transmits an added signal to a PID controller through a pin of the PID controller, wherein occurrence of auxiliary engine failure load reduction is enabled to act as a switching condition of the SFT switching block.

Description

technical field [0001] The invention relates to an operation method of a PID controller feedforward logic optimization configuration control system for an induced draft fan. Background technique [0002] Thermal power plants generally use a distributed control system (Distributed Control System, DCS) to monitor and control the operation of the entire unit. The Coordination Control System (CCS) belongs to the decentralized control system, and controls the boiler and steam turbine as a whole to coordinate their working status and energy supply and demand relationship. The main fuel trip MFT (Main Fuel Trip), the Chinese name is the main combustion trip, which is the core content of boiler safety protection. Its function is to continuously monitor whether various predetermined safe operating conditions are met. Once there is a situation that may endanger the safe operation of the boiler In case of working conditions, quickly cut off the fuel entering the furnace to avoid accid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/42F23N3/00
CPCF23N3/00F23N2223/34F23N2223/36F23N2223/42G05B11/42
Inventor 张岩王学同王真宋瑞福邱树良陶蕊祝宝营
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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