CN104848250A - Intelligent primary air pressure target value control system and method - Google Patents
Intelligent primary air pressure target value control system and method Download PDFInfo
- Publication number
- CN104848250A CN104848250A CN201510184808.4A CN201510184808A CN104848250A CN 104848250 A CN104848250 A CN 104848250A CN 201510184808 A CN201510184808 A CN 201510184808A CN 104848250 A CN104848250 A CN 104848250A
- Authority
- CN
- China
- Prior art keywords
- primary air
- air pressure
- module
- preset value
- logic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Regulation And Control Of Combustion (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses an intelligent primary air pressure target value control system and method. The system comprises a first control logic module, a second logic control module, a controller, a summator, and a collecting module for collecting AGC instructions sent out by an electric energy management system. The output end of the collecting module is connected with the input end of the second logic control module. The output end of the second logic control module is connected with the output end of the first control logic module and the input end of the summator. The output end of the summator is connected with the input end of the controller. The output end of the controller is connected with the control end of a hot air baffle in a primary air duct. By means of the system and method, primary air power consumption can be effectively lowered.
Description
Technical field
The invention belongs to field of thermal power, relate to a kind of primary air pressure desired value intelligence control system and method.
Background technology
For the boiler of unit pulverized-coal system, in order to improve the load responding speed of application of load process, usually in half-open (40-60 °) state in the hot-air damper actual motion of coal pulverizer, so that in application of load process, when hot-air damper aperture continues to increase, primary air flow has flow to respond, and meets load responding speed.Because hot-air damper is in half-open position, there is obvious restriction loss (1.0-2.0kpa), when boiler load is in stable state, this restriction loss is loss, adds primary air fan power consumption.The contradiction how solved between hot-air damper restriction loss and boiler load responding ability reduces the key of First air power consumption.
Summary of the invention
The object of the invention is to the shortcoming overcoming above-mentioned prior art, provide a kind of primary air pressure desired value intelligence control system and method, this system and method can reduce the power consumption of First air effectively.
For achieving the above object, primary air pressure desired value intelligence control system of the present invention comprises controller, adder, the first control logic module for generation of the preset value of benchmark primary air pressure, the second Logic control module for generation of the preset value of additional primary air pressure and the acquisition module for gathering the AGC instruction that electric energy management system sends.
Primary air pressure desired value intelligent control method of the present invention comprises the following steps:
1) when the change of generating set load is in preset range, first control logic module produces the preset value of benchmark primary air pressure, second Logic control module exports as " 0 ", and controller regulates the primary air pressure size entered in boiler by the aperture controlling hot-air damper in an air channel according to the preset value of described benchmark primary air pressure;
When the change of generating set load is not in preset range, acquisition module obtains the AGC instruction that electric energy management system sends, acquisition module gathers the AGC instruction that electric energy management system sends, and described AGC instruction is forwarded in the second Logic control module, the second Logic control module produces the preset value of additional primary air pressure; First control logic module produces the preset value of benchmark primary air pressure simultaneously, after the preset value of described additional primary air pressure is added by adder with the preset value of benchmark primary air pressure, obtain the preset value of actual primary air pressure, controller regulates the primary air pressure size entered in boiler by the aperture controlling hot-air damper in an air channel according to the set-point of described actual primary air pressure.
The present invention has following beneficial effect:
Primary air pressure desired value intelligence control system of the present invention and method are in the course of the work, generating set is when steady load moves, the preset value of actual primary air pressure is the preset value of benchmark primary air pressure, hot-air damper aperture standard-sized sheet now in an air channel, at utmost reduce hot-air damper restriction loss, when the change of generating set load is not in preset range, the preset value of actual primary air pressure is the result that the preset value of additional primary air pressure is added with the preset value of benchmark primary air pressure, thus increase actual primary air pressure fast, improve the coal dust amount entered in boiler, meet the demand of coal amount increase to primary air flow, the adverse effect brought after offsetting hot-air damper standard-sized sheet, effectively can reduce the power consumption of First air.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, 1 is adder, 5 is controller for acquisition module, 2 to be the second Logic control module, 3 be the first control logic module, 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
With reference to figure 1, this law primary air pressure of the present invention desired value intelligence control system comprises controller 5, adder 4, the first control logic module 3 for generation of the preset value of benchmark primary air pressure, the second Logic control module 2 of the preset value for generation of additional primary air pressure and the acquisition module 1 for gathering the AGC instruction that electric energy management system sends; The output of described acquisition module 1 is connected with the input of the second Logic control module 2, the output of the second Logic control module 2 is connected with the input of adder 4 with the output of the first control logic module 3, the output of adder 4 is connected with the input of controller 5, and the output of controller 5 is connected with the control end of hot-air damper in an air channel.
Primary air pressure desired value intelligent control method of the present invention comprises the following steps:
1) when the change of generating set load is in preset range, first control logic module 3 produces the preset value of benchmark primary air pressure, second Logic control module 2 exports as " 0 ", and controller 5 regulates the primary air pressure size entered in boiler by the aperture controlling hot-air damper in an air channel according to the preset value of described benchmark primary air pressure;
When the change of generating set load is not in preset range, acquisition module 1 obtains the AGC instruction that electric energy management system sends, acquisition module 1 gathers the AGC instruction that electric energy management system sends, and described AGC instruction is forwarded in the second Logic control module 2, the second Logic control module 2 produces the preset value of additional primary air pressure; First control logic module 3 produces the preset value of benchmark primary air pressure simultaneously, after the preset value of described additional primary air pressure is added by adder 4 with the preset value of benchmark primary air pressure, obtain the preset value of actual primary air pressure, controller 5 regulates the primary air pressure size entered in boiler by the aperture controlling hot-air damper in an air channel according to the set-point of described actual primary air pressure.
In the process of generating set load supercharging, benchmark primary air pressure and additional primary air pressure sum constitute the actual primary air pressure in varying duty process, when generating set runs at steady load, benchmark primary air pressure is only had to work, now hot-air damper aperture is close to standard-sized sheet, at utmost reduces hot-air damper restriction loss.By suitably reducing dynamic separator rotating speed at application of load, exert oneself to improve pulverized coal preparation system fast, the short time meets the load responding of boiler to the demand entering stove internal combustion doses.
In varying duty process, by the logic optimization of dynamic separator rotating speed, the fuel quantity entering boiler can be improved fast in the starting stage, by additional primary air pressure function, primary air flow can be improved rapidly, meet the demand of coal amount increase to primary air flow, the adverse effect brought after offsetting hot-air damper standard-sized sheet.
Claims (2)
1. a primary air pressure desired value intelligence control system, it is characterized in that, comprising controller (5), adder (4), the first control logic module (3) for generation of the preset value of benchmark primary air pressure, the second Logic control module (2) for generation of the preset value of additional primary air pressure and the acquisition module (1) for gathering the AGC instruction that electric energy management system sends;
The output of described acquisition module (1) is connected with the control end of the second Logic control module (2), the output of the second Logic control module (2) and the output of the first control logic module (3) are connected with the input of adder (4), the output of adder (4) is connected with the input of controller (5), and the output of controller (5) is connected with the control end of hot-air damper in an air channel.
2. a primary air pressure desired value intelligent control method, is characterized in that, based on primary air pressure desired value intelligence control system according to claim 1, comprises the following steps:
1) when the change of generating set load is in preset range, first control logic module (3) produces the preset value of benchmark primary air pressure, second Logic control module (2) exports as " 0 ", and controller (5) regulates the primary air pressure size entered in boiler by the aperture controlling hot-air damper in an air channel according to the preset value of described benchmark primary air pressure;
When the change of generating set load is not in preset range, acquisition module (1) gathers the AGC instruction that electric energy management system sends, and described AGC instruction is forwarded in the second Logic control module (2), the second Logic control module (2) produces the preset value of additional primary air pressure; First control logic module (3) produces the preset value of benchmark primary air pressure simultaneously, after the preset value of described additional primary air pressure is added by adder (4) with the preset value of benchmark primary air pressure, obtain the preset value of actual primary air pressure, controller (5) regulates the primary air pressure size entered in boiler by the aperture controlling hot-air damper in an air channel according to the set-point of described actual primary air pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510184808.4A CN104848250B (en) | 2015-04-17 | 2015-04-17 | A kind of primary air pressure desired value intelligence control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510184808.4A CN104848250B (en) | 2015-04-17 | 2015-04-17 | A kind of primary air pressure desired value intelligence control system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104848250A true CN104848250A (en) | 2015-08-19 |
| CN104848250B CN104848250B (en) | 2017-03-15 |
Family
ID=53848096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510184808.4A Expired - Fee Related CN104848250B (en) | 2015-04-17 | 2015-04-17 | A kind of primary air pressure desired value intelligence control system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104848250B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762769A (en) * | 2017-01-09 | 2017-05-31 | 大唐东北电力试验研究所有限公司 | Based on primary air pressure desired value decision-making technique and system that mill group is exerted oneself |
| CN108036357A (en) * | 2017-11-30 | 2018-05-15 | 国网辽宁省电力有限公司电力科学研究院 | A kind of fired power generating unit primary air fan automatically controls optimization method |
| CN108758684A (en) * | 2018-05-09 | 2018-11-06 | 西安热工研究院有限公司 | A kind of boiler secondary air baffle opening desired value kinetic-control system and method |
| CN109681910A (en) * | 2018-12-24 | 2019-04-26 | 中国神华能源股份有限公司 | Adjust the method and device of pressure |
| CN110701634A (en) * | 2019-09-18 | 2020-01-17 | 上海发电设备成套设计研究院有限责任公司 | Primary air pressure control system and control method thereof |
| CN112327778A (en) * | 2020-11-13 | 2021-02-05 | 华润电力（涟源）有限公司 | Automatic primary air pressure adjusting method for thermal power plant |
| CN112619862A (en) * | 2020-11-16 | 2021-04-09 | 中国神华能源股份有限公司国华电力分公司 | Method and system for controlling sealing wind pressure of coal mill inlet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205631A (en) * | 1978-10-11 | 1980-06-03 | Westinghouse Electric Corp. | Pressure limiting control for an inlet draft fan in an electric power plant |
| JPH05240422A (en) * | 1992-02-28 | 1993-09-17 | Toshiba Corp | Combustion air flow rate controller |
| CN202675352U (en) * | 2012-07-20 | 2013-01-16 | 大唐信阳发电有限责任公司 | Automatic air supply control system of boiler |
| CN103047670A (en) * | 2013-01-29 | 2013-04-17 | 福州福大自动化科技有限公司 | Direct blowing type double-inlet and double-outlet steel ball grinding energy conservation optimization system and method thereof |
| CN103104931A (en) * | 2011-11-09 | 2013-05-15 | 华北电力科学研究院有限责任公司 | Primary frequency modulation method and primary frequency modulation system based on boiler primary wind pressure dynamic compensation |
-
2015
- 2015-04-17 CN CN201510184808.4A patent/CN104848250B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205631A (en) * | 1978-10-11 | 1980-06-03 | Westinghouse Electric Corp. | Pressure limiting control for an inlet draft fan in an electric power plant |
| JPH05240422A (en) * | 1992-02-28 | 1993-09-17 | Toshiba Corp | Combustion air flow rate controller |
| CN103104931A (en) * | 2011-11-09 | 2013-05-15 | 华北电力科学研究院有限责任公司 | Primary frequency modulation method and primary frequency modulation system based on boiler primary wind pressure dynamic compensation |
| CN202675352U (en) * | 2012-07-20 | 2013-01-16 | 大唐信阳发电有限责任公司 | Automatic air supply control system of boiler |
| CN103047670A (en) * | 2013-01-29 | 2013-04-17 | 福州福大自动化科技有限公司 | Direct blowing type double-inlet and double-outlet steel ball grinding energy conservation optimization system and method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762769A (en) * | 2017-01-09 | 2017-05-31 | 大唐东北电力试验研究所有限公司 | Based on primary air pressure desired value decision-making technique and system that mill group is exerted oneself |
| CN108036357A (en) * | 2017-11-30 | 2018-05-15 | 国网辽宁省电力有限公司电力科学研究院 | A kind of fired power generating unit primary air fan automatically controls optimization method |
| CN108758684A (en) * | 2018-05-09 | 2018-11-06 | 西安热工研究院有限公司 | A kind of boiler secondary air baffle opening desired value kinetic-control system and method |
| CN109681910A (en) * | 2018-12-24 | 2019-04-26 | 中国神华能源股份有限公司 | Adjust the method and device of pressure |
| CN109681910B (en) * | 2018-12-24 | 2020-10-02 | 中国神华能源股份有限公司 | Method and device for regulating pressure |
| CN110701634A (en) * | 2019-09-18 | 2020-01-17 | 上海发电设备成套设计研究院有限责任公司 | Primary air pressure control system and control method thereof |
| CN112327778A (en) * | 2020-11-13 | 2021-02-05 | 华润电力（涟源）有限公司 | Automatic primary air pressure adjusting method for thermal power plant |
| CN112619862A (en) * | 2020-11-16 | 2021-04-09 | 中国神华能源股份有限公司国华电力分公司 | Method and system for controlling sealing wind pressure of coal mill inlet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104848250B (en) | 2017-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104848250A (en) | Intelligent primary air pressure target value control system and method | |
| CN105182925A (en) | Energy-saving coordination control method for coal-fired power units | |
| CN102588011B (en) | Steam engine main control system of large fossil power unit | |
| CN102200272B (en) | Main steam temperature control system for large boiler | |
| CN212205685U (en) | Cement waste heat power generation coal mill drying air balance adjusting system | |
| CN202132926U (en) | Control system for temperature of main steam of large-scale boiler | |
| CN103195522A (en) | Frequency conversion control method of circulating water pumps of two steam turbine generator sets | |
| CN208418729U (en) | A kind of burner of adjustable load | |
| CN108613184A (en) | A kind of burner and working method of adjustable load | |
| CN107218087B (en) | A kind of frequency modulation control method in Turbo-generator Set | |
| CN205919707U (en) | Heat exchanger gas temperature automatic regulating system | |
| CN104913335A (en) | Generator set primary wind pressure control system with stalling protection function | |
| CN108758684A (en) | A kind of boiler secondary air baffle opening desired value kinetic-control system and method | |
| CN210087494U (en) | Distributed energy waste heat utilization system | |
| CN107524527B (en) | Gas turbine variable back pressure transformation system applicable to combined cycle power station | |
| CN207169949U (en) | One kind utilizes heat primary air waste heat control coal pulverizer import temperature system of blast | |
| CN205154711U (en) | A frequency conversion and movable vane joint control system for adjustable draught fan of movable vane | |
| CN207999808U (en) | A kind of band axial direction adjustable vane prevents the device of burner nozzle slagging | |
| CN212396378U (en) | Wide load denitration of boiler and improvement wind temperature integration system | |
| CN101555884B (en) | Combined adjusting method of centrifugal fan and thermal power unit using same | |
| CN204717732U (en) | There is the generating set primary wind pressure control system of stall protection function | |
| CN104635534B (en) | The fired power generating unit varying duty control method adjusted using cold end system cooling working medium | |
| CN204665330U (en) | A kind of biomass boiler | |
| CN108278156A (en) | Fresh air cooling heating and power generation system | |
| CN216564981U (en) | System for preventing current transformer load from exceeding limit under master control state of current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20180417 |