CN109780884A - Method for building up, control method, system and the unit of unit back pressuce model - Google Patents
Method for building up, control method, system and the unit of unit back pressuce model Download PDFInfo
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- CN109780884A CN109780884A CN201811648028.0A CN201811648028A CN109780884A CN 109780884 A CN109780884 A CN 109780884A CN 201811648028 A CN201811648028 A CN 201811648028A CN 109780884 A CN109780884 A CN 109780884A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 59
- 239000003245 coal Substances 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 230000008901 benefit Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 6
- 238000010977 unit operation Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
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- 238000011056 performance test Methods 0.000 description 1
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Abstract
The present invention relates to back pressure control fields, disclose method for building up, control method, system and the unit of a kind of unit back pressuce model.The method for building up includes: the measurement data based on unit back pressuce under various boundary Yu shutter aperture, establishes multiple functional relations between unit back pressuce and shutter aperture；For each functional relation in multiple functional relations between unit back pressuce and shutter aperture, based on the relationship under the conditions of corresponding boundary between coal consumption and unit back pressuce, the corresponding relationship of shutter aperture and the best back pressure of unit in the case where coal consumption amount is the smallest situation is determined；And based on the corresponding relationship corresponding to unit loads different under default meteorological condition between shutter aperture and the best back pressure of unit, establish the threedimensional model of unit load, shutter aperture and the best back pressure of unit.It can be realized by threedimensional model and unit back pressuce is directly controlled by indirect air cooling system, to reduce coal consumption for power generation to the maximum extent, improve the economy of unit operation and the automatic control level of power plant.
Description
Technical field
The present invention relates to back pressure control fields, more particularly to a kind of method for building up of unit back pressuce model, based on indirect
Control method, system and the unit of air cooling system.
Background technique
Indirect air cooling system is mainly used in the Northwest water-deficient area, the indirect air cooling system control of investment application at present
Mode: by the control function subgroup of indirect air cooling sector shutter to shutter aperture, major cycle water return water temperature, sector into
The signals such as the cooling triangle wall temperature of coolant-temperature gage, sector are adjusted, to achieve the purpose that indirectly control unit back pressuce.
Summary of the invention
The object of the present invention is to provide a kind of method for building up of unit back pressuce model, based on the controlling party of indirect air cooling system
Method, system and unit can be realized and directly control unit back pressuce by indirect air cooling system, to reduce power generation to the maximum extent
Coal consumption, and then the economy of unit operation is improved, promote the automatic control level of power plant.
To achieve the goals above, one aspect of the present invention provides a kind of method for building up of unit back pressuce model, the foundation side
Method includes: the measurement data based on the shutter aperture of shutter in unit back pressuce described under part and indirect air cooling system, is established
Multiple functional relations between the unit back pressuce and the shutter aperture；It is opened for the unit back pressuce and the shutter
Each functional relation in multiple functional relations between degree, based on coal consumption under corresponding boundary condition and the unit back pressuce it
Between relationship, determine the coal consumption amount be the smallest situation under shutter aperture and the best back pressure of unit corresponding relationship；With
And based on the shutter aperture corresponding to unit load different under default meteorological condition and the best back pressure of the unit it
Between corresponding relationship, establish about unit load, the threedimensional model of shutter aperture and the best back pressure of unit, wherein the side
Boundary's condition includes unit load, meteorological condition and unit back pressuce.
Optionally, method for building up further include: the threedimensional model is modified by closed feedback loop.
Optionally, the closed feedback loop is the closed feedback loop using the shutter aperture as feedback signal.
Optionally, the meteorological condition includes at least environment temperature, wind speed and/or wind direction.
Correspondingly, another aspect of the present invention also provides a kind of control method based on indirect air cooling system, the control method
Comprise determining that meteorological condition locating for the indirect air cooling system；According to gas locating for the identified indirect air cooling system
As condition, the corresponding threedimensional model that above-mentioned method is established is determined；Target back pressure is imported into the threedimensional model, to export
Unit load corresponding with the target back pressure and shutter aperture；And under the unit load exported, described in adjusting
The aperture of the shutter of indirect air cooling system is run for the shutter aperture exported with controlling unit with the target back pressure.
Correspondingly, another aspect of the invention also provides a kind of control system based on indirect air cooling system, the control system
It include: meteorological determining device, for determining meteorological condition locating for the indirect air cooling system；Threedimensional model determining device is used
In the meteorological condition according to locating for the identified indirect air cooling system, the corresponding three-dimensional mould that above-mentioned method is established is determined
Type；Gatherer, for target back pressure to be imported the threedimensional model, thus output unit corresponding with the target back pressure
Load and shutter aperture；And controller, for adjusting the hundred of the indirect air cooling system under the unit load exported
The aperture of leaf window is run for the shutter aperture exported with controlling unit with the target back pressure.
Correspondingly, another aspect of the invention also provides a kind of unit, which includes above-mentioned based on indirect air cooling system
Control system.
Correspondingly, another aspect of the invention also provides a kind of machine readable storage medium, on the machine readable storage medium
It is stored with instruction, which is used for so that machine executes the method for building up of above-mentioned unit back pressuce model.
Through the above technical solutions, the present invention is creatively by establishing unit back pressuce corresponding under various boundary
With the functional relation between shutter aperture, the functional relation being then directed between each unit back pressuce and shutter aperture, base
Relationship under same boundary conditions between coal consumption and the unit back pressuce, shutter aperture and machine when determining coal consumption minimum
The corresponding relationship of best back pressure is organized, finally the shutter aperture according to corresponding to different unit loads under default meteorological condition
With the corresponding relationship between the best back pressure of unit, the three-dimensional about unit load, shutter aperture and the best back pressure of unit is established
Model, also, corresponding threedimensional model is determined according to meteorological condition locating for indirect air cooling system, and target back pressure is imported into institute
Stating threedimensional model can be obtained unit load corresponding with the target back pressure and shutter aperture, then in the obtained machine of institute
Under group load, adjusting the aperture of the shutter of the indirect air cooling system is obtained shutter aperture to control unit with institute
Target back pressure operation is stated, thus, it can be achieved that directly controlling unit back pressuce by indirect air cooling system, to reduce to the maximum extent
Coal consumption for power generation, and then the economy of unit operation is improved, promote the automatic control level of power plant.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart of the method for building up for the unit back pressuce model that one embodiment of the present invention provides；
Fig. 2 is " shutter aperture-unit back pressuce " curve under boundary condition that one embodiment of the present invention provides
Schematic diagram；
Fig. 3 is that one embodiment of the present invention provides " unit load-shutter aperture-best back pressure of unit " curve
Schematic diagram；
Fig. 4 is the procedure chart for establishing unit back pressuce model that one embodiment of the present invention provides；
Fig. 5 is the flow chart for the control method based on indirect air cooling system that one embodiment of the present invention provides；And
Fig. 6 is the structure chart for the control system based on indirect air cooling system that one embodiment of the present invention provides.
Description of symbols
60 70 threedimensional model determining devices of meteorological determining device
80 gatherer, 90 controller
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Design back-pressure and summer back pressure can be divided by controlling unit back pressuce by indirect air cooling system.Unit is transported in 4-10 month
Between the departure date, generallys use summer back pressure mode and controlled, at this time indirect air cooling sector shutter standard-sized sheet；And the main needle of the present invention
It during being run to 11-12,1-3 month, is controlled using design back-pressure mode, indirect air cooling sector shutter throttling at this time is adjusted
It saves (non-standard-sized sheet), determines " unit load-hundred by boundary conditions such as unit load, environment temperature, wind speed, wind direction, unit back pressuces
The leaf window aperture-best back pressure of unit " curve.
Fig. 1 is the flow chart of the method for building up for the unit back pressuce model that one embodiment of the present invention provides.Such as Fig. 1 institute
Show, the method for building up of unit back pressuce model provided by the invention can include: step S101, based on the unit back pressuce under part and
The measurement data for connecing the shutter aperture of shutter in air cooling system is established between the unit back pressuce and the shutter aperture
Multiple functional relations；Step S102, in multiple functional relations between the unit back pressuce and the shutter aperture
Each functional relation is determined based on the relationship under corresponding boundary condition between coal consumption and the unit back pressuce in the coal
Consumption is the corresponding relationship of shutter aperture and the best back pressure of unit in the smallest situation；And step S103, based on default gas
Corresponding relationship as under the conditions of between the shutter aperture and the best back pressure of the unit corresponding to different unit loads,
It establishes about unit load, the threedimensional model of shutter aperture and the best back pressure of unit, wherein the boundary condition includes unit
Load, meteorological condition and unit back pressuce.The method for building up can by establish under various boundary corresponding unit back pressuce with
Functional relation between shutter aperture is based on then for the functional relation between each unit back pressuce and shutter aperture
Relationship under same boundary conditions between coal consumption and the unit back pressuce, shutter aperture and unit when determining coal consumption minimum
The corresponding relationship of best back pressure, finally under default meteorological condition the shutter aperture according to corresponding to different unit loads with
Corresponding relationship between the best back pressure of unit is established about unit load, the three-dimensional mould of shutter aperture and the best back pressure of unit
Type can be realized by the threedimensional model established directly control unit back pressuce by indirect air cooling system as a result, thus maximum limit
Degree ground reduces coal consumption for power generation, and then improves the economy of unit operation, promotes the automatic control level of power plant.
Corresponding certain value range in the boundary condition each, for example, unit load: 330-660MW；Environment temperature
Degree: -20-10 DEG C；Wind speed: 0-10m/s；Wind direction: 0 ° -360 °；Unit back pressuce: obstruction back pressure (variable) -25KPa, wherein described
Obstruction back pressure is directly related with unit load, and specific situation of change between the two is shown in following table 1.Establishing unit
During back pressure model, each of described boundary condition is required to carry out reasonable value in above-mentioned value range.
| 330MW | 396MW | 462MW | 528MW | 594MW | 660MW |
| 4KPa | 4.5KPa | 5KPa | 5.5KPa | 6.5KPa | 7KPa |
Obstruction back pressure under the different unit loads of table 1
Specifically, existing be explained in detail and illustrated to the establishment process of unit back pressuce model.
Firstly, in 5 DEG C of unit load 330MW, environment temperature, under wind speed 5m/s, 180 ° of wind direction of boundary condition, acquisition hundred
Then the data of leaf window aperture and unit back pressuce are arranged and " shutter aperture-unit back pressuce " shown in Fig. 2 song can be obtained
Line a.
Then, unit performance test is carried out under the conditions of above-mentioned " shutter aperture-unit back pressuce " curve, obtains unit
The minimum operating condition A model points of net coal consumption rate amount, i.e. " the shutter aperture-best back pressure of unit " A model points, as shown in Figure 2.
Then, it similarly can be obtained in unit load (330MW, 396MW, 462MW, 528MW, 594MW, 660MW), environment temperature
Spend (- 20 DEG C, -15 DEG C, -10 DEG C, -5 DEG C, 0 DEG C, 5 DEG C, 10 DEG C), wind speed (0m/s, 5m/s, 10m/s) and wind direction (0 °, 60 °,
120 °, 180 °, 240 °, 360 °) etc. " shutter aperture-unit back pressuce " curve b, c ... under a variety of boundary conditions of compositions
With corresponding " the shutter aperture-best back pressure of unit " B, C ... model points.Certainly, the parameters in above-mentioned boundary condition
Corresponding value can be freely combined, for example, unit load is 330MW, 0 ° of -20 DEG C of environment temperature, wind speed 0m/s and wind direction shape
At boundary condition b；Unit load is 396MW, 60 ° of -15 DEG C of environment temperature, wind speed 5m/s and wind direction formation boundary condition c；And
Unit load is 60 ° of 660MW, -15 DEG C of environment temperature, wind speed 5m/s and wind direction formation boundary condition d etc..
Finally, under a default meteorological condition (for example, 60 ° of -15 DEG C of environment temperature, wind speed 5m/s and wind direction), it will be different
Unit load corresponding to corresponding relationship between shutter aperture and the best back pressure of unit be organized in Fig. 3, so as to
To " load-shutter aperture-best back pressure of unit " curve p.
The method for building up of unit back pressuce model provided by the invention may also include that through closed feedback loop to the three-dimensional
Model is modified.Wherein, the closed feedback loop is that the closed loop feedback using the shutter aperture as feedback signal is returned
Road.Further unit back pressuce model can be modified using using shutter aperture as the closed feedback loop of feedback signal,
Unit back pressuce is directly controlled by indirect air cooling system to realize by the unit back pressuce model, to drop to the maximum extent
Low coal consumption for power generation, and then the economy of unit operation is improved, promote the automatic control level of power plant.
The above-mentioned process for establishing unit back pressuce model is shown in Fig. 4, specifically, based on boundary condition and limit value and accordingly
Real time data is run, curve p (threedimensional model) is calculated by model, at the same time, using shutter aperture as feedback letter
Number carry out fair curve p, so that more accurate " load-shutter aperture-best back pressure of unit " threedimensional model can be obtained.
Correspondingly, as shown in figure 5, the present invention also provides a kind of control method based on indirect air cooling system, the controlling party
Method can include: step S501 determines meteorological condition locating for the indirect air cooling system；Step S502, according to identified institute
Meteorological condition locating for indirect air cooling system is stated, determines the corresponding threedimensional model that above-mentioned method is established；Step S503, by mesh
It marks back pressure and imports the threedimensional model, thus output unit load corresponding with the target back pressure and shutter aperture；With
And step S504, under the unit load exported, the aperture for adjusting the shutter of the indirect air cooling system is exported
Shutter aperture is run with controlling unit with the target back pressure.The control method can be according to the meteorology locating for indirect air cooling system
Condition determines corresponding threedimensional model, and it is available corresponding with the target back pressure that target back pressure imported the threedimensional model
Unit load and shutter aperture adjust the shutter of the indirect air cooling system then under obtained unit load
Aperture be obtained shutter aperture run with controlling unit with the target back pressure, thus, it can be achieved that by indirectly sky
Cooling system directly controls unit back pressuce, to reduce coal consumption for power generation to the maximum extent, and then improves the economy of unit operation, mentions
Rise the automatic control level of power plant.
For the step S501, environment temperature locating for the indirect air cooling system can be acquired by temperature sensor,
The wind speed around the indirect air cooling system is acquired by wind speed measurement device；And the indirect sky is acquired by wind direction detector
Wind direction around cooling system determines institute then according to temperature sensor, wind speed measurement device and wind direction detector data collected
State meteorological condition locating for indirect air cooling system.
For the step S502, according to meteorological condition locating for the indirect air cooling system, established and meteorology
Corresponding threedimensional model is searched in the one-to-one threedimensional model of condition.
For the step S503, in the threedimensional model searched, the best back pressure of unit is set as target back pressure, really
Unit load and shutter aperture corresponding to the fixed target back pressure.Correspondingly, as shown in fig. 6, the present invention also provides a kind of bases
In the control system of indirect air cooling system, the control system can include: meteorological determining device 60, for determining the indirect air cooling
Meteorological condition locating for system；Threedimensional model determining device 70, for according to locating for the identified indirect air cooling system
Meteorological condition determines the corresponding threedimensional model that above-mentioned method is established；Gatherer 80, described in importing target back pressure
Threedimensional model, thus output unit load corresponding with the target back pressure and shutter aperture；And controller 90, it is used for
Under the unit load exported, adjust the aperture of the shutter of the indirect air cooling system for the shutter aperture that is exported with
Control unit is run with the target back pressure.
The controller can be the controller of control shutter original in the indirect air cooling system, can also be individually to set
The new controller set, wherein the controller can be general processor, application specific processor, conventional processors, digital signal
Processor (DSP), multi-microprocessor, with the associated one or more microprocessors of DSP core, controller, microcontroller, specially
With integrated circuit (ASIC), field programmable gate array (FPGA) circuit, other any kind of integrated circuits (IC), state machine
Etc..
Detail and benefit in relation to the control system provided by the invention based on indirect air cooling system see above-mentioned
For the description of the control method based on indirect air cooling system, repeated no more in this.
Correspondingly, the present invention also provides a kind of unit, which includes the above-mentioned control system based on indirect air cooling system
System.
Correspondingly, the present invention also provides a kind of machine readable storage medium, finger is stored on the machine readable storage medium
It enables, which is used for so that machine executes the method for building up of above-mentioned unit back pressuce model.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (8)
1. a kind of method for building up of unit back pressuce model, which is characterized in that the method for building up includes:
Measurement based on the shutter aperture of shutter in the unit back pressuce described under various boundary and indirect air cooling system
Data establish multiple functional relations between the unit back pressuce and the shutter aperture；
For each functional relation in multiple functional relations between the unit back pressuce and the shutter aperture, based on corresponding
Boundary condition under relationship between coal consumption and the unit back pressuce, determine the blinds in the case where the coal consumption amount is the smallest situation
The corresponding relationship of window aperture and the best back pressure of unit；And
Based on the shutter aperture corresponding to unit load different under default meteorological condition and the best back pressure of the unit
Between corresponding relationship, establish about unit load, the threedimensional model of shutter aperture and the best back pressure of unit,
Wherein, the boundary condition includes unit load, meteorological condition and unit back pressuce.
2. method for building up according to claim 1, which is characterized in that the method for building up further include:
The threedimensional model is modified by closed feedback loop.
3. method for building up according to claim 2, which is characterized in that the closed feedback loop is to be opened with the shutter
Spend the closed feedback loop as feedback signal.
4. method for building up according to claim 1, which is characterized in that the meteorological condition includes at least environment temperature, wind
Speed and/or wind direction.
5. a kind of control method based on indirect air cooling system, which is characterized in that the control method includes:
Determine meteorological condition locating for the indirect air cooling system；
According to meteorological condition locating for the identified indirect air cooling system, any one of -4 power according to claim 1 is determined
The corresponding threedimensional model that benefit requires the method for building up of the unit back pressuce model to establish；
Target back pressure is imported into the threedimensional model, thus output unit load corresponding with the target back pressure and shutter
Aperture；And
Under the unit load exported, adjusts the aperture of the shutter of the indirect air cooling system and opened for the shutter exported
Degree is run with controlling unit with the target back pressure.
6. a kind of control system based on indirect air cooling system, which is characterized in that the control system includes:
Meteorological determining device, for determining meteorological condition locating for the indirect air cooling system；
Threedimensional model determining device determines basis for the meteorological condition according to locating for the identified indirect air cooling system
The corresponding threedimensional model that the method for building up of unit back pressuce model described in any one of claim 1-4 claim is established；
Gatherer, for target back pressure to be imported the threedimensional model, thus output machine corresponding with the target back pressure
Group load and shutter aperture；And
Controller, the aperture under the unit load exported, adjusting the shutter of the indirect air cooling system are defeated
Shutter aperture out is run with controlling unit with the target back pressure.
7. a kind of unit, which is characterized in that the unit includes the control according to claim 6 based on indirect air cooling system
System.
8. a kind of machine readable storage medium, which is characterized in that be stored with instruction on the machine readable storage medium, which uses
In the method for building up for making machine execute unit back pressuce model described in any one of -4 claims according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648028.0A CN109780884B (en) | 2018-12-29 | 2018-12-29 | Set backpressure model establishing method, control method and system and set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648028.0A CN109780884B (en) | 2018-12-29 | 2018-12-29 | Set backpressure model establishing method, control method and system and set |
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| Publication Number | Publication Date |
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| CN109780884A true CN109780884A (en) | 2019-05-21 |
| CN109780884B CN109780884B (en) | 2020-10-02 |
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| CN201811648028.0A Expired - Fee Related CN109780884B (en) | 2018-12-29 | 2018-12-29 | Set backpressure model establishing method, control method and system and set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110285687A (en) * | 2019-06-26 | 2019-09-27 | 双良节能系统股份有限公司 | A kind of air-cooled control system and its control method based on artificial intelligence technology |
| CN111735319A (en) * | 2020-06-29 | 2020-10-02 | 中国电力工程顾问集团西北电力设计院有限公司 | Control method, system and equipment for air cooling system of thermal power generating unit and readable storage medium |
| CN114018069A (en) * | 2021-11-10 | 2022-02-08 | 新疆天池能源有限责任公司 | Shutter adjusting system and method of indirect air cooling system |
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| CN114018069A (en) * | 2021-11-10 | 2022-02-08 | 新疆天池能源有限责任公司 | Shutter adjusting system and method of indirect air cooling system |
| CN114018069B (en) * | 2021-11-10 | 2024-03-22 | 新疆天池能源有限责任公司 | Shutter adjusting system and method of indirect air cooling system |
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| Publication number | Publication date |
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| CN109780884B (en) | 2020-10-02 |
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