CN108253413B - Tracking control method for main steam pressure of biomass cogeneration circulating fluidized bed - Google Patents
Tracking control method for main steam pressure of biomass cogeneration circulating fluidized bed Download PDFInfo
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- 239000002028 Biomass Substances 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 25
- 230000003134 recirculating effect Effects 0.000 claims description 92
- 239000000446 fuel Substances 0.000 claims description 28
- 238000005259 measurement Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 230000017105 transposition Effects 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000010902 straw Substances 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013528 artificial neural network Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 moisture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/28—Control devices specially adapted for fluidised bed, combustion apparatus
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
A tracking control method for the main steam pressure of a biomass cogeneration circulating fluidized bed aims at the control problem of a tracking target value of the main steam pressure of the biomass cogeneration circulating fluidized bed, establishes a simultaneous differential equation of the main steam pressure, tracking deviation accumulation amount of the main steam pressure and straw combustion amount of the biomass cogeneration circulating fluidized bed, measures and reads an actual value and a tracking target value of the main steam pressure of the biomass cogeneration circulating fluidized bed on line, designs an automatic tracking controller for the main steam pressure of the biomass cogeneration circulating fluidized bed, calculates the quantity of biomass entering the circulating fluidized bed for combustion in real time, and realizes the automatic tracking control of the main steam pressure of the biomass cogeneration circulating fluidized bed on the pressure target value. The invention provides a main vapor pressure tracking control method of a biomass cogeneration circulating fluidized bed, which is intuitive to understand, simple in design and easy to realize.
Description
Technical field
The invention belongs to biomass cogeneration of heat and power recirculating fluidized bed automation fields, are related to a kind of biomass cogeneration of heat and power
Recirculating fluidized bed main steam pressure tracking and controlling method.
Background technique
Biomass is a kind of efficiently available renewable clean fuel, can be with mines such as Substitute coal, oil and natural gas
Biomass fuel generates electric power, not only reduces dependence of the mankind to fossil energy, protects national energy resources, and strictly implement life
The efficient burning of substance is the important means for reducing China PM2.5 concentration, mitigates energy-consuming and pollutes to caused by environment.At present
American-European countries establishes more perfect biomass cogeneration plant, it was demonstrated that biomass power generation and the integrated thermoelectricity connection of heat supply
Producing has significant source benefit and environmental benefit, and recycles discarded such as stalk biomass fuel and increase peasant's receipts
Enter.Different from the minerals fuel such as coal, oil and natural gas, the biomass fuel in different cultivars and the place of production has different fixations
The component ratios such as carbon, fugitive constituent, moisture, ash content, and recycling when preprocessing means and local climate influence, cause biology
Matter fuel quality it is widely different.Since adaptability of the circulating fluidized bed boiler to fuel quality is preferable, recirculating fluidized bed at present
Biomass cogeneration of heat and power technology develops very rapid in China.During recirculating fluidized bed biomass cogeneration of heat and power, fluidized bed
The variation of the main steam pressure of boiler indicates the steam production of boiler and the steam consumption wave characteristic of load.When load steam consumption needs
It asks when changing, it is necessary to the supply for correspondingly changing biomass fuel, so that the main steam pressure of circulating fluidized bed boiler
Variation be able to satisfy fluidized-bed combustion boiler steam production can follow load steam consumption in time variation.In biomass cogeneration of heat and power list
In first unit, burning in circulating fluid bed boiler Steam pressure control is to be mutually related with steam turbine load control system, the main steaming of boiler
The task of vapour pressure Force control system is exactly timely adjustment biomass fuel doses, makes biomass cogeneration of heat and power circulating fluidized bed boiler
The energy input that quantity of steam output and steam turbine need extraneous workload demand is adapted, and mark is biomass cogeneration of heat and power
The changes in demand of steady, the quick tracking steam consumption of circulating fluidized bed boiler main steam pressure.By to existing biomass thermoelectricity
The retrieval of the document of coproduction recirculating fluidized bed main steam pressure tracking and controlling method finds that biomass cogeneration of heat and power at present is ciculation fluidized
Bed main steam pressure tracking and controlling method mainly has: the biomass cogeneration of heat and power recirculating fluidized bed main steam based on Traditional PID technology
Press tracking and controlling method, the biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method based on fuzzy control technology
With the biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method based on neural network control technique, but main steam
The Traditional PID tracing control of pressure will not consume vapour with biomass fuel quality and load since controller parameter is offline determination
Amount changes and changes, therefore cannot track the corresponding steam pressure target value changed due to load steam consumption well；Equally
Since the difference of biomass fuel quality is big, need using a large amount of ambiguity function so that ring fluidized bed main steam pressure with
The calculation amount of track control method is larger；And the biomass cogeneration of heat and power recirculating fluidized bed main steam based on neural network control technique
Pressure tracking and controlling method then needs a large amount of industrial data sample to be used for off-line training biomass cogeneration of heat and power process model parameter,
To guarantee to obtain the dynamic relationship between accurate main steam pressure and biomass fuel doses, these biomass cogenerations of heat and power
Steam regulating effect of the recirculating fluidized bed main steam pressure tracking and controlling method for the quality of biomass fuel frequent fluctuation
Convergence rate is slow, understands and is abstracted, and application process is complicated.Because the frequent fluctuation of biomass fuel quality and user need
The mechanical periodicity asked, but the real-time of recirculating fluidized bed main steam pressure force tracing control, rapidity and accuracy requirement are high, because
This, although the research of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method achieves some achievements, in recent years
Carry out related scholar to have still carried out research in large quantities for this challenging important problem and inquired into, to meet biomass
Cogeneration of heat and power process to the recirculating fluidized bed automatic control technology of high-quality there is an urgent need to.
Summary of the invention
In order to overcome the understanding of existing biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method it is abstract,
The deficiency of line computation complexity and application process complexity, the present invention provide a kind of biology for understanding that intuitive, design is simple, being easily achieved
Matter cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method, the method includes walking as follows
It is rapid:
1), consider the Third-order differential equations of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure and biomass fuel doses,
Referring to formula (1):
Wherein, t indicates time variable；P indicates recirculating fluidized bed main steam pressure variable, MPa；U indicates life used for combustion
Biomass fuel amount, t/h；" ", " " and " " respectively indicates the first derivative, second dervative and three ranks of main steam pressure
Derivative；The steady-state gain of constant G expression recirculating fluidized bed main steam pressure；Constant T1、T2Circulating fluidized bed boiler is respectively indicated with τ
Drum pressure time constant, main steam pressure time constant and time lag constant, s；
2) the first differential side of the cumulant e of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracing deviation, is defined
Journey, referring to formula (2):
Wherein, PrIndicate the target value of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure；E indicates biomass thermal Electricity Federation
Produce the cumulant of recirculating fluidized bed main steam pressure tracing deviation；
3), convolution (1) and formula (2) are established about biomass cogeneration of heat and power recirculating fluidized bed main steam pressure, main steam pressure
The simultaneous differential equations of tracing deviation cumulant and biomass fuel doses, referring to formula (3):
4), according to the concept of control system dominant pole, the one of recirculating fluidized bed main steam pressure tracking control system is given
Group expectation closed-loop pole (λ1,λ2,λ3,λ4), referring to formula (4):
Wherein, j indicates imaginary symbols, and a > 0 indicates the characteristic parameter of tracking control system；
5), definition is for calculating biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking control system in t moment
The tracing control of biomass combustion amount is restrained, referring to formula (5):
Wherein, symbol " T " indicates the transposition of vector；Coefficient k1,k2,k 3And k4It is calculated and is determined by formula (6):
6), the actual value and tracking target value of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure are read in on-line measurement,
Calculate the quantity combusted of the biomass of circulating fluidized bed boiler in real time according to formula (5), burning in circulating fluid bed boiler automatically controls system
The amount of biomass that system is adjusted into real time in circulating fluidized bed boiler according to the calculated result of biomass combustion amount.
Further, it in the step 6), at next control period, re-measures and reads recirculating fluidized bed main steam pressure
Actual value and tracking target value, according to formula (5) in real time calculate circulating fluidized bed boiler biomass quantity combusted, it is ciculation fluidized
Bed boiler burning automatic control system is adjusted into circulating fluidized bed boiler in real time according to the calculated result of biomass combustion amount
Amount of biomass, so in cycles, realize biomass cogeneration of heat and power recirculating fluidized bed main steam pressure to the automatic of target value
Tracing control.
Technical concept of the invention is: for the control of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking target value
Problem processed establishes main steam pressure, main steam pressure tracing deviation cumulative amount and the stalk combustion of biomass cogeneration of heat and power recirculating fluidized bed
The actual value and tracking of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure are read in the simultaneous differential equations of burning amount, on-line measurement
Target value designs a biomass cogeneration of heat and power recirculating fluidized bed main steam pressure automatic tracking controller, calculates to enter in real time and follow
The amount of biomass of circulation fluidized bed combustion, realize biomass cogeneration of heat and power recirculating fluidized bed main steam pressure to target value it is automatic with
Track control.
The main execution part of the present invention is run on circulating fluidized bed boiler control computer to be implemented.This method application process
3 stages can be roughly divided into:
1, parameter setting: including model parameter and tracking control unit parameter: being imported in interface in model, input model formula
(1) constant G, T in1、T2With the value of τ；In tracking control unit parameter setting interface, input tracking control system characteristic parameter a >
0；After inputting parameter confirmation, it will be arranged in data feeding computer storage unit RAM by control computer and be saved；
2, offline debugging: clicking the Debug button in configuration interface, and control system enters the tracking control unit debugging stage,
Using the unit-step response of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure as test experiments, adjust in configuration interface
Parameter a observes the tracing control effect of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure and biomass combustion amount, thus really
Fixed one can well realize the parameter of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracing control；The value of parameter a is advised
Then: a is positive real number；The adjustment rule of parameter a: the value for increasing a will shorten biomass cogeneration of heat and power recirculating fluidized bed main steam pressure
The tracking adjustment time, but increase biomass quantity combusted；On the contrary, biomass cogeneration of heat and power recycle stream will be slowed down by reducing the value of a
Change the tracking velocity and biomass combustion amount of bed main steam pressure, but extends the tracking time of recirculating fluidized bed main steam pressure, because
This, when practical tuning parameter a, the overshoot of Ying Quanheng biomass cogeneration of heat and power recirculating fluidized bed main steam pressure, the tracking time and
Comprehensive performance between biomass combustion amount；
3, configuration interface " RUN " button, starting biomass cogeneration of heat and power recirculating fluidized bed control meter on-line operation: are clicked
The CPU of calculation machine reads recirculating fluidized bed main steam pressure model parameter and controller parameter, and executes " biomass cogeneration of heat and power circulation
Fluidized bed main steam pressure tracing control program " reads biomass cogeneration of heat and power recirculating fluidized bed main steam pressure by on-line measurement
Actual value and tracking target value, in real time calculate circulating fluidized bed boiler biomass quantity combusted, circulating fluidized bed boiler combustion
It burns automatic control system and is adjusted into the biomass in circulating fluidized bed boiler in real time according to the calculated result of biomass combustion amount
Quantity so in cycles realizes that biomass cogeneration of heat and power recirculating fluidized bed main steam pressure automatically tracks control to target value.
Beneficial effects of the present invention are mainly manifested in: 1, biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracing control
Method only has a design parameter, and design is simple, be readily appreciated that, on-line implement is easy, practical；2, biomass cogeneration of heat and power
Recirculating fluidized bed can realize the calculating and adjustment control of biomass combustion amount when main steam pressure deviates target value automatically, so as to
To be applicable in the varying load condition of more complicated multiplicity, meet biomass cogeneration of heat and power circulating fluidized bed boiler to quick load steam consumption
The arch of demand is given, and the controlled level of biomass cogeneration of heat and power recirculating fluidized bed combustion system operation is improved.
Detailed description of the invention
Fig. 1 is that biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracks real-time curve, wherein dotted line is biomass thermal
Electricity Federation produces recirculating fluidized bed main steam pressure target value real-time curve, and solid line is biomass cogeneration of heat and power recirculating fluidized bed main steam pressure
Real-time tracking curve；
Fig. 2 is the biomass combustion amount real-time curve of biomass cogeneration of heat and power recirculating fluidized bed.
Specific embodiment
Method of the invention is described in further detail with reference to the accompanying drawing.
Referring to Figures 1 and 2, a kind of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method, the side
Method includes the following steps:
1), consider the Third-order differential equations of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure and biomass fuel doses,
Referring to formula (1):
Wherein, t indicates time variable；P indicates recirculating fluidized bed main steam pressure variable, MPa；U indicates life used for combustion
Biomass fuel amount, t/h；" ", " " and " " respectively indicates the first derivative, second dervative and three ranks of main steam pressure
Derivative；The steady-state gain of constant G expression recirculating fluidized bed main steam pressure；Constant T1、T2Circulating fluidized bed boiler is respectively indicated with τ
Drum pressure time constant, main steam pressure time constant and time lag constant, s；
2) the first differential side of the cumulant e of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracing deviation, is defined
Journey, referring to formula (2):
Wherein, PrIndicate the target value of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure；E indicates biomass thermal Electricity Federation
Produce the cumulant of recirculating fluidized bed main steam pressure tracing deviation；
3), convolution (1) and formula (2) are established about biomass cogeneration of heat and power recirculating fluidized bed main steam pressure, main steam pressure
The simultaneous differential equations of tracing deviation cumulant and biomass fuel doses, referring to formula (3):
4), according to the concept of control system dominant pole, the one of recirculating fluidized bed main steam pressure tracking control system is given
Group expectation closed-loop pole (λ1,λ2,λ3,λ4), referring to formula (4):
Wherein, j indicates imaginary symbols, and a > 0 indicates the characteristic parameter of tracking control system；
5), definition is for calculating biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking control system in t moment
The tracing control of biomass combustion amount is restrained, referring to formula (5):
Wherein, symbol " T " indicates the transposition of vector；Coefficient k1,k2,k 3And k4It is calculated and is determined by formula (6):
6), the actual value and tracking target value of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure are read in on-line measurement,
Calculate the quantity combusted of the biomass of circulating fluidized bed boiler in real time according to formula (5), burning in circulating fluid bed boiler automatically controls system
The amount of biomass that system is adjusted into real time in circulating fluidized bed boiler according to the calculated result of biomass combustion amount.
Further, it in the step 6), at next control period, re-measures and reads recirculating fluidized bed main steam pressure
Actual value and tracking target value, according to formula (5) in real time calculate circulating fluidized bed boiler biomass quantity combusted, it is ciculation fluidized
Bed boiler burning automatic control system is adjusted into circulating fluidized bed boiler in real time according to the calculated result of biomass combustion amount
Amount of biomass, so in cycles, realize biomass cogeneration of heat and power recirculating fluidized bed main steam pressure to the automatic of target value
Tracing control.
The present embodiment is biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracing control process, and concrete operations are as follows:
1, in parameter setting interface, input biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracing control process
Constant value G=8, T1=3, T2=90 and τ=30；Input controller parameter a；
2, the Debug button being clicked on configuration interface and entering Debugging interface, the CPU for starting main control computer is called in advance
" the tracing control program " woven, which is debugged, determines controller parameter a, and detailed process is as follows: according to the value and adjustment of parameter a
Rule comprehensively considers overshoot, tracking time and the biology of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking response
Comprehensive performance between matter quantity combusted, tuning parameter obtain a=-0.1, and debugging result is saved in computer storage unit RAM
In；
3, configuration interface " RUN " button, the CPU of starting biomass cogeneration of heat and power recirculating fluidized bed control computer are clicked
Biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracing control process model parameter and controller parameter are read, is executed " raw
Substance cogeneration of heat and power recirculating fluidized bed main steam pressure tracing control program " reads recirculating fluidized bed main steam by on-line measurement
The actual value and target value of pressure calculate and control into the biomass combustion amount in circulating fluidized bed boiler, realize biomass thermal
Electricity Federation produces recirculating fluidized bed and automatically tracks control to vapour pressure target value；When reaching in next control period, on-line measurement
The actual value and target value for reading recirculating fluidized bed main steam pressure, repeat entire implementation procedure later, so in cycles, realize
Biomass cogeneration of heat and power recirculating fluidized bed main steam pressure automatically tracks control to target value.
Actual tracking control effect is as depicted in figs. 1 and 2, and Fig. 1 is biomass cogeneration of heat and power recirculating fluidized bed main steam pressure
Track real-time curve, wherein dotted line is biomass cogeneration of heat and power recirculating fluidized bed main steam pressure target value real-time curve, and solid line is
Biomass cogeneration of heat and power recirculating fluidized bed main steam pressure real-time tracking curve；Fig. 2 is biomass cogeneration of heat and power recirculating fluidized bed
Biomass combustion amount real-time curve.
Described above is the biomass thermal Electricity Federation that one embodiment that the present invention provides shows excellent control performance
It produces recirculating fluidized bed main steam pressure and automatically tracks control effect.It may be noted that above-described embodiment is used to illustrate the present invention, and
It does not limit the invention, within the spirit of the invention and the scope of protection of the claims, the present invention is made any
Modification, both falls within protection scope of the present invention.
Claims (2)
1. a kind of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method, it is characterised in that: the method packet
Include following steps:
1) Third-order differential equations for, considering biomass cogeneration of heat and power recirculating fluidized bed main steam pressure and biomass fuel doses, referring to
Formula (1):
Wherein, t indicates time variable；P indicates recirculating fluidized bed main steam pressure variable, MPa；U indicates biomass used for combustion
Fuel quantity, t/h；The first derivative, second dervative and three ranks that " ", " " and " " respectively indicates main steam pressure are led
Number；The steady-state gain of constant G expression recirculating fluidized bed main steam pressure；Constant T1、T2Circulating fluidized bed boiler vapour is respectively indicated with τ
Packet pressure time constant, main steam pressure time constant and time lag constant, s；
2) differential equation of first order of the cumulant e of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracing deviation, ginseng, are defined
See formula (2):
Wherein, PrIndicate the target value of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure；E indicates that biomass cogeneration of heat and power follows
The cumulant of ring fluidized bed main steam pressure tracing deviation；
3), convolution (1) and formula (2) are established and are tracked about biomass cogeneration of heat and power recirculating fluidized bed main steam pressure, main steam pressure
The simultaneous differential equations of deviation cumulant and biomass fuel doses, referring to formula (3):
4), according to the concept of control system dominant pole, one group of phase of recirculating fluidized bed main steam pressure tracking control system is given
Hope closed-loop pole (λ1,λ2,λ3,λ4), referring to formula (4):
Wherein, j indicates imaginary symbols, and a indicates the characteristic parameter of tracking control system, a > 0；
5), definition is for calculating biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking control system in the biology of t moment
The tracing control of matter fuel quantity is restrained, referring to formula (5):
Wherein, symbol " T " indicates the transposition of vector；Coefficient k1,k2,k3And k4It is calculated and is determined by formula (6):
6), the actual value and tracking target value of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure are read in on-line measurement, according to
Formula (5) in real time calculate circulating fluidized bed boiler biomass fuel doses, automatic boiler combustion control system of circulating fluid bed according to
The calculated result of biomass fuel doses is adjusted into the amount of biomass in circulating fluidized bed boiler in real time.
2. a kind of biomass cogeneration of heat and power recirculating fluidized bed main steam pressure tracking and controlling method as described in claim 1, special
Sign is: in the step 6), at next control period, re-measuring the actual value for reading recirculating fluidized bed main steam pressure
With tracking target value, the biomass fuel doses of circulating fluidized bed boiler, burning in circulating fluid bed boiler are calculated in real time according to formula (5)
Automatic control system is adjusted into the biological prime number in circulating fluidized bed boiler according to the calculated result of biomass fuel doses in real time
Amount so in cycles realizes that biomass cogeneration of heat and power recirculating fluidized bed main steam pressure automatically tracks control to target value.
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| 燃料-汽压系统锅炉蒸汽压力动态面控制;崔志强等;《中国电机工程学报》;20120915;104-106 * |
| 锅炉燃烧系统改造优化的应用研究;董实现等;《电站系统工程》;20040525;15-16 * |
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Application publication date: 20180706 Assignee: Shandong and Yangxin energy Polytron Technologies Inc. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980042382 Denomination of invention: A tracking control method for main steam pressure in biomass cogeneration circulating fluidized bed Granted publication date: 20190705 License type: Common License Record date: 20230925 |