CN108628175A - Power plant Optimal Control System and method based on air cooling system heat dissipation measurement - Google Patents
Power plant Optimal Control System and method based on air cooling system heat dissipation measurement Download PDFInfo
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- CN108628175A CN108628175A CN201810696699.8A CN201810696699A CN108628175A CN 108628175 A CN108628175 A CN 108628175A CN 201810696699 A CN201810696699 A CN 201810696699A CN 108628175 A CN108628175 A CN 108628175A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
- G05B13/042—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators in which a parameter or coefficient is automatically adjusted to optimise the performance
Abstract
The present invention discloses a kind of the power plant Optimal Control System and method of the measurement that radiates based on air cooling system, the system comprises：Air cooling heat radiator component, heat sink assembly conduct heat measurement subsystem, generating set dynamic operational behaviour analyzing subsystem, air cooling system running optimizatin subsystem and data transmission and data display subsystem in real time.The present invention is based on non-contact infrared measuring principles, avoid interference of the conventional contact temperature measuring equipment to the destruction on air cooling system heat sink assembly surface and to heat sink assembly surface temperature field, simultaneously compared with conventional thermocouple temp measuring method, measuring system is not necessarily to external cable, improves the economy of the measuring table；Air cooling system heat sink assembly area that is more flexible and convenient in measurement process, can measuring bigger, effectively raises the efficiency of measurement.
Description
Technical field
The present invention relates to power plant winer construction fields and running optimizatin field, and air cooling system is based on more particularly to one kind
The power plant Optimal Control System and method of heat dissipation measurement.
Background technology
Power plant cooling system is the important component of generating set.Thermal power plant cooling system is according to cooling medium
Difference mainly have two major classes, one is the humid-cool system for adopting water as cooling medium, another kind be use surrounding air conduct
The air cooling system of cooling medium.Air cooling system compared with conventional humid-cool system, can water-saving 3/4 or more, since China's richness coal lacks water
Resources characteristic, air cooling turbo-generator China have significant advantages for development.
Power plant air cooling system is divided into indirect air cooling and Direct Air-Cooled two ways.In order to ensure the safe operation of unit,
At present additional monitoring device is all installed for air cooling system, but the temperature for being currently limited to related keyword measuring point measures.For example, for
Indirect air cooling system mainly monitors inlet and outlet coolant-temperature gage；And for direct air cooling system, it is contemplated that the heat exchange property of air cooling system,
Runing adjustment, the preventing freeze in winter of hot reflux situation and air cooling system, it is then some more that associated temperature monitors measuring point, usually all can be
Steam distributing pipe road, condensation water manifold and the gradual interior outside reload temperature measuring point of air cooling heat radiator component.
Both the above air cooling system changes although being measured into trip temperature related keyword position due to influencing air cooling system
The factor of thermal characteristics and operation characteristic is numerous, especially unit load, sun angles and intensity, environment temperature, ambient humidity,
Around air cooling tower under the influence of the factors such as degree of fouling of wind speed and wind direction and air cooling heat radiator assembly surface, air cooling tubes condenser
Significant changes will occur for runnability.Problems with is in turn resulted in take place frequently：Unit back pressuce variation is frequent；Summer high temperature period unit
Load is limited；Winter low temperature period anti-freezing pressure increases；The air cooling system method of operation is unreasonable, and station service power consumption rate is higher；Air-cooled system
The heat-exchanging component cleaning frequency of uniting is unreasonable.In the case, if the heat flux distribution and reality of air cooling system cannot be measured in real time
When heat dissipation capacity, and the influence of above-mentioned factor will cannot be cleared, and can not carry out accurately running optimizatin by only leaning on associated temperature to measure
Control, is finally the purpose that cannot achieve the energy-saving and emission-reduction under being precisely controlled.
Currently, still lack easy, the real-time monitoring means to air cooling system real time heat flux Density Distribution and real-time heat dissipation capacity,
Lead to directly obtain the direct correlation with the current operating load of unit and external environment influence factor so that right at present
It can not all accomplish accurate dynamic control in the optimization runing adjustment, preventing freeze in winter, load optimal etc. of air cooling system.
Invention content
The object of the present invention is to provide a kind of power plant Optimal Control System based on air cooling system heat dissipation measurement and sides
Method effectively raises the precision and efficiency of air cooling system heat dissipation measurement, to realize the optimum control in power plant.
To achieve the above object, the present invention provides following schemes：
A kind of power plant Optimal Control System for the measurement that radiated based on air cooling system, the system comprises：Air-cooled heat dissipation
Device assembly, heat sink assembly conduct heat measurement subsystem, generating set dynamic operational behaviour analyzing subsystem, air cooling system in real time
Running optimizatin subsystem and data transmission and data display subsystem；
The heat sink assembly conducts heat measurement subsystem and is dissipated for measuring the real-time of air cooling system heat sink assembly in real time
Heat, including several groups measure patch, conduct heat measuring device in real time, the real-time heat transfer measuring device includes chip surface
Temperature profile measurement module, heat flux distribution selection analysis and processing module, data transmission module and data analysis module；
The generating set dynamic operational behaviour analyzing subsystem be used for record, analyze and calculate unit operation index and
Data；
The air cooling system running optimizatin subsystem is used for according to the generating set dynamic operational behaviour analyzing subsystem
Real-time analysis data, calculate and analyze the number of units that current wind turbine or water pump are opened, and according to the real-time heat output of heat sink assembly
The current real-time heat dissipation capacity and heat flux distribution situation that subsystem measures are measured, is calculated negative per Fans or water pump in air cooling system
Lotus, according to the operation of the every Fans of the corresponding variable frequency adjustment of result of calculation or water pump.
Optionally, the measurement patch is closely placed in air cooling heat radiator assembly surface, and the measurement patch is composite junction
Laminating apparatus is arranged in the thin slice of structure, the measurement patch periphery；The chip surface temperature profile measurement module is with infrared or hot
Galvanic couple measurement method obtains the temperature parameter that patch is measured described in several groups.
Optionally, the measurement patch is spliced by multiple and different Heat Conduction Materials.
Optionally, the shape for measuring patch is round or polygon.
Optionally, the generating set dynamic operational behaviour analyzing subsystem includes：Unit operation Monitoring Indexes and analysis
Unit, data transmission unit and data output and display unit, the unit operation Monitoring Indexes and analytic unit for recording,
It analyzes and calculates and the relevant data of units consumption index.
Optionally, the data transmission and data display subsystem include data transmission unit and data display unit, institute
Data transmission unit is stated to conduct heat in real time measurement subsystem, the generating set dynamic operational behaviour for the heat sink assembly
Data interaction between analyzing subsystem, the air cooling system running optimizatin subsystem and the data display unit；The number
It is used for display parameters and index according to display unit.
A kind of power plant optimal control method for the measurement that radiated based on air cooling system, the method includes：
Several groups are measured patch to be uniformly mounted on air cooling system heat sink assembly surfaces externally and internally, will conduct heat measurement in real time
Amount device is put in place, it is ensured that during measurement, infrared imaging module in the measuring device that conducts heat in real time
Field of view center axis is vertical with the measurement patch；
The real time heat flux Density Distribution Feature and air cooling heat radiator assembly surface measured according to the heat transfer measuring device
Design feature to air cooling heat radiator assembly surface carry out mesh generation, and according to the density degree of grid adjust air cooling heat radiator
The riding position and placement quantity of assembly surface feature measuring point；
According to the feature measuring point riding position and placement quantity after optimization, the heat of air cooling heat radiator assembly surface is measured in real time
Current density distribution characteristics, and air cooling heat radiator component table is calculated according to the surface characteristics of air cooling heat radiator assembly surface and surface area
The real-time heat dissipation capacity in face；
Record, analyze and calculate with units consumption index related data, obtain analysis data；
According to the history optimized operation data and theory optimum analysis data tune under the analysis data, current operating condition
Save the operation of wind turbine or water pump.
Optionally according to the history optimized operation data and theory optimum analysis under the analysis data, current operating condition
Data adjust the operation of wind turbine or water pump, specifically include：
It is true according to the history optimized operation data analyzed under data, current operating condition and theoretical optimum analysis data
Determine the maximum security boundary and optimized operation back pressure of turbine back pressure, calculates the platform for analyzing and optimizing that current wind turbine or water pump are opened
Number and open position, and the load of every Fans or water pump in air cooling system is calculated, it is every according to the corresponding variable frequency adjustment of result of calculation
The operation of Fans or water pump and guides the adjustment of summer high temperature period unit load, prevents winter low temperature period air cooling system
It freezes, optimization air cooling system heat-exchanging component cleans the frequency.
Optionally, the optimal control method further includes：
Determine the air cooling system heat sink assembly wall surface temperature for measuring patch present position；
Obtain the surface temperature of the different Heat Conduction Materials of the measurement patch of the position；
Multiple heat of the position are determined according to the air cooling system heat sink assembly wall surface and multiple surface temperatures
Current density；
Judge that the difference between any two of multiple heat flow densities whether within the scope of setting, is surveyed if so, determining
It is effective to measure patch measurement data, if it is not, illustrating measuring point aging, which is useless point, the measurement patch more renewed.
According to specific embodiment provided by the invention, the invention discloses following technique effects：
The present invention provides a kind of the power plant Optimal Control System and method of the measurement that radiates based on air cooling system, based on non-
Contact infrared survey principle is avoided in measuring device to the destruction on air cooling system heat sink assembly surface and to radiator group
The interference of part surface temperature field, while compared with conventional thermocouple temp measuring method, measuring system is not necessarily to external cable, improves this
The economy of measuring table；Air cooling system heat sink assembly area more flexible and convenient in measurement process, that bigger can be measured,
Effectively raise the efficiency of measurement.
The present invention can be surveyed according to the Temperature Distribution and style characteristic flexible arrangement of air cooling system heat sink assembly outer surface
Point improves the accuracy and application range of the measurement method.
Simple in measurement system structure of the present invention, arrangement is convenient and is easily achieved, and the measurement range of heat flow density is extensive, complete
The variation range of heat output in the power plant air cooling system course of work can be covered entirely.
The present invention is widely used, adaptable, is applicable not only to the measurement of air cooling system heat sink assembly heat output, and suitable
Real time heat flux density and the application field of real-time heat output are monitored in real time for those needs, such as transformer, architectural exterior-protecting construction
Deng.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that the present invention is based on the power plant Optimal Control System operation principle schematic diagrams of air cooling system heat dissipation measurement；
Fig. 2 is real-time heat dissipation capacity measuring principle schematic diagram；
Fig. 3 is each modular structure functional schematic in measuring device inside that conducts heat in real time；
Fig. 4 is the exemplary plot that the present invention measures patch；
Fig. 5 is the different mesh generation schematic diagram of air cooling system heat sink assembly wall surface tightness degree of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of power plant Optimal Control System based on air cooling system heat dissipation measurement and sides
Method effectively raises the precision and efficiency of heat dissipation measurement, to realize the optimum control in power plant.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is that the present invention is based on the power plant Optimal Control System operation principle schematic diagrams of air cooling system heat dissipation measurement.
As described in Figure 1, the Optimal Control System includes six subsystems：The real-time heat output of air cooling heat radiator component, heat sink assembly
Measure subsystem, generating set dynamic operational behaviour analyzing subsystem, air cooling system running optimizatin subsystem, data transmission and number
According to display subsystem.
The heat sink assembly conducts heat measurement subsystem and is dissipated for measuring the real-time of air cooling system heat sink assembly in real time
Heat, including several groups measure patch, conduct heat measuring device in real time.It is wherein, described to measure the thin slice that patch is composite construction,
Laminating apparatus is arranged in the measurement patch periphery, ensures that the measurement patch can closely be placed in the air cooling heat radiator component
On surface.The real-time heat transfer measuring device is an integrated system, specifically includes chip surface temperature profile measurement module, heat
Flow distribution selection analysis and processing module, data transmission module, data analysis module.The chip surface temperature profile measures mould
Block obtains associated temperature parameter using infrared (or thermocouple) measurement method.
Preferably, the apparent parameter for measuring patch and the composition Heat Conduction Material type for measuring patch can bases
The specific features of air cooling system heat sink assembly flexibly determine and selection；The various shapes for measuring patch (are specifically as follows
Round, rectangle or other gengons)；The thickness for measuring patch gets over Bao Yuehao, and measurement patch thickness is thinner, more advantageous
It is quickly spread in measurement patch in heat flow, ensures to reach stable in the hot-fluid time shorter on heat transfer direction；
Preferably, the temperature at air cooling system heat sink assembly surface characteristics measuring point can be according to several on arbitrary measurement patch
The temperature computation of the different Heat Conduction Materials of kind obtains, and compared with single traditional measurement method, reduces the thermal contact resistance of measuring cell
Influence to measurement accuracy effectively increases real time heat flux Density Distribution and the in real time accuracy of heat transfer measurement.
In addition, the temperature at air cooling system heat sink assembly surface characteristics measuring point can be obtained outside by wireless temperature measurement mode,
Also it can be measured and be obtained by traditional approach (thermoelectricity occasionally thermistor etc.).
The generating set dynamic operational behaviour analyzing subsystem is used for recording, analyze and calculating and unit operation characteristic phase
The index and data of pass, including：Unit operation Monitoring Indexes and analytic unit, data transmission unit, data output and display are single
Member.Wherein, the unit operation Monitoring Indexes are used to record, analyze and calculate and units consumption index dependency number with analytic unit
According to (associated temperature, pressure, flow, coal characteristic, wind turbine or the performance data of pump, unit load, unit consumption, unit coal consumption, power consumption
Deng).
The air cooling system running optimizatin subsystem divides in real time according to generating set dynamic operational behaviour analyzing subsystem
Data are analysed, the number of units of current wind turbine (or water pump) unlatching is calculated and analyze.And measurement that conducted heat in real time according to heat sink assembly
The current real-time heat dissipation capacity and heat flux distribution situation of systematic survey calculate which wind turbine (or water pump) in air cooling system should be opened
And the load of specific each Fans (or water pump), according to the fortune of the corresponding specific wind turbine of result of calculation variable frequency adjustment (or water pump)
Row.
The data transmission and data display subsystem include data transmission unit and data display unit two parts.Its
In, the data transmission unit is used to the heat sink assembly conducting heat measurement subsystem, the generating set in real time dynamically
Data interaction between analysis on Operating subsystem, air cooling system running optimizatin subsystem and data display unit；The number
According to display unit for showing that relevant parameter, index, appearance form include real-time and historical data, real-time and history curve, reality
When and history chart etc. display.
The present invention also provides a kind of power plant optimal control methods based on air cooling system heat dissipation measurement, and step is such as
Under：
(1) several groups heat sink assembly conducted heat in real time in measurement subsystem measure patch and are uniformly mounted on air-cooled system
It unites on heat sink assembly surfaces externally and internally, the real-time heat transfer measuring device is placed in suitable position, it is ensured that in measurement
In the process, the field of view center axis of infrared imaging module is vertical with the measurement patch in heat transfer measuring device in real time.
(2) the real time heat flux Density Distribution Feature measured according to heat transfer measuring device is implemented, the heat flux distribution selection
Analysis and processing module can be according to the design features and Characteristics of The Distribution of Temperature of air cooling heat radiator assembly surface to air cooling heat radiator
Assembly surface carries out mesh generation, and the placement of air cooling heat radiator assembly surface feature measuring point is adjusted according to the density degree of grid
Position and placement quantity.
(3) according to the feature measuring point riding position and placement quantity after optimization, air cooling heat radiator assembly surface is measured in real time
Heat flux distribution feature, and air cooling heat radiator group is calculated according to the surface characteristics of air cooling heat radiator assembly surface and surface area
The real-time heat dissipation capacity on part surface.
(4) simultaneously, generating set dynamic operational behaviour analyzing subsystem record, analyze and calculate and refer to units consumption
Mark related data (associated temperature, pressure, flow, coal characteristic, wind turbine or the performance data of pump, unit load, unit consumption, unit
Coal consumption, power consumption etc.).
(5) air cooling system running optimizatin subsystem is according to the real-time analysis of generating set dynamic operational behaviour analyzing subsystem
History optimized operation data under data, current operating condition and theoretical optimum analysis data, determine the maximum of turbine back pressure
Security boundary and optimized operation back pressure calculate the number of units and unlatching for analyzing and optimizing that current air cooling system wind turbine (or water pump) is opened
Position.And the current real-time heat dissipation capacity and heat flux distribution situation for measurement subsystem measurement of being conducted heat in real time according to heat sink assembly,
Calculating which wind turbine (or water pump) in air cooling system should open and the load of specific each Fans (or water pump), according to phase
The operation for answering the specific wind turbine of result of calculation variable frequency adjustment (or water pump), and guides the adjustment of summer high temperature period unit load, in advance
Anti- winter low temperature period air cooling system freezes, optimization air cooling system heat-exchanging component cleans the frequency.
When the obtained real-time heat output of heat sink assembly of measurement is more than the radiator according to current unit load calculating gained
When component heat output, then show that true heat gain value is more than heat dissipation capacity needed for theory, i.e. cooling fan (or water circulating pump) load is inclined
Greatly, have the optimization demand of further cooling fan (or water circulating pump), at this time according to the real-time heat output of heat sink assembly with
Current unit load calculates the difference adjustment cooling fan of the heat sink assembly heat output of gained or the load of (water circulating pump), reaches
To the purpose of optimization generating set cold end system cooling fan (or water circulating pump) load.Vice versa.
(6) data transmission and data display subsystem are responsible for the data interaction between each subsystem and unit, and show phase
Related parameter, index, appearance form include the display of real-time and historical data, real-time and history curve, real-time and history chart etc..
(7) air cooling system running optimizatin subsystem can carry out real time data excavation according to the accumulative operation data of long-time,
To find unit wind speed around different unit loads, sun angles and intensity, environment temperature, ambient humidity, air cooling tower
And the influence value to the real-time heat dissipation capacity of air cooling system of the factors such as degree of fouling of wind direction and air cooling heat radiator assembly surface.And root
It controls and optimizes in advance according to weather condition, network load demand, unit back pressuce and unit load situation according to above-mentioned influence value
The operating condition of unit controls rotating speed, setting steam turbine operation back pressure and the air-cooled heat dissipation of air cooling system cooling blower or water pump
The clear frequency of device improves unit operation economy and reduces the appearance of safety accident.
The present invention has the following advantages and the technique effect of high-lighting：
1, power plant air cooling system real time heat flux Density Distribution of the present invention and heat dissipation measuring device and optimization in real time
System is based on non-contact infrared measuring principle, avoids the destruction to air cooling system heat sink assembly surface in measuring device
And the interference to heat sink assembly surface temperature field, while compared with conventional thermocouple temp measuring method, measuring system is without external
Cable improves the economy of the measuring table；Air cooling system that is more flexible and convenient in measurement process, can measuring bigger dissipates
Hot device assembly area, effectively raises the efficiency of measurement.
2, power plant air cooling system real time heat flux Density Distribution of the present invention and heat dissipation measuring device and optimization in real time
System can improve this according to the Temperature Distribution and style characteristic flexible arrangement measuring point of air cooling system heat sink assembly outer surface
The accuracy and application range of measurement method.
3, power plant air cooling system real time heat flux Density Distribution of the present invention and heat dissipation measuring device and optimization in real time
System, simple in measurement system structure, arrangement is convenient and is easily achieved, and the measurement range of heat flow density is extensive, can cover completely
The variation range of heat output in the power plant air cooling system course of work.
4, power plant air cooling system real time heat flux Density Distribution of the present invention and heat dissipation measuring device and optimization in real time
In system, the heat flow density obtained to several different Heat Conduction Materials may be implemented in heat flux distribution selection analysis and processing module
It can mutually be checked between value, heat-flow measurement patch, that is, measuring patch has validity self-correcting kernel function, can effectively screen measurement member
The validity of part substantially increases the reliability and accuracy of measuring point data.
5, power plant air cooling system real time heat flux Density Distribution of the present invention and heat dissipation measuring device in real time, are not only fitted
For the measurement of air cooling system heat sink assembly heat output, and suitable for the real-time monitoring real time heat flux density of those needs and in real time
The application field of heat output, such as transformer, architectural exterior-protecting construction.
Real-time heat transfer measuring device measuring principle of the present invention is as follows：
According to following formula, the heat flow density value for arbitrarily choosing two kinds of Heat Conduction Materials calculates air cooling system heat dissipation at the measuring point
The temperature T of device assembly wall surfacej：
It arranges：The temperature T of air cooling system heat sink assembly at the measuring pointjFor
Wherein, qi1、qi2The heat flow density by two kinds of Heat Conduction Materials respectively in the measurement patch, unit W/m2；
λ1、λ2The thermal conductivity of two kinds of Heat Conduction Materials, unit W/mk respectively in the measurement patch；Ti1、Ti2Respectively the measurement is pasted
The surface temperature of two kinds of Heat Conduction Materials in piece, unit are DEG C；TjFor the two kinds of Heat Conduction Materials and air cooling system in the measurement patch
The bottom surface temperature that heat sink assembly fits closely, unit are DEG C；L1、L2The thickness of two kinds of Heat Conduction Materials respectively at the measuring point, two
The consistency of thickness of kind of Heat Conduction Material and uniformly, i.e.,：L1=L2；Unit is m.
According to following formula, the heat flow density in air cooling system heat sink assembly wall surface any feature grid can be calculated：
Or
Or
Or
Wherein, qi1、qi2、qi3、qi4For the calculated measuring point place of four kinds of determining Heat Conduction Materials in single-measurement patch
State the heat flow density of air cooling system heat sink assembly wall surface, unit W/m2；λ1、λ2、λ3、λ4Four kinds of heat conduction respectively at the measuring point
The thermal conductivity of material, unit W/mk；Ti1、Ti2、Ti3、Ti4For the surface temperature of four kinds of Heat Conduction Materials at the measuring point, unit is
℃；L1、L2、L3、L4For the thickness of four kinds of Heat Conduction Materials at the measuring point, the consistency of thickness of each Heat Conduction Material and uniform, unit m.
The heat flow density value q for analyzing and measuring several different Heat Conduction Materials in patch is calculated based on formula abovei1、qi2、
qi3、qi4(or qi1、qi2......qin), compare above-mentioned heat flow density qi1、qi2、qi3、qi4Numerical value, if calculated heat flow density
Numerical value qi1、qi2、qi3、qi4All in the range of setting (2%--5%), then the measurement patch measurement data is effective for deviation, should
Point heat flow density value is the average value of aforementioned four heat flow density numerical value；If calculated heat flow density qi1、qi2、qi3、qi4Number
There are three the numerical bias of (or two) in the range of setting (2%--5%) in value, then the heat flow density value choosing of the measuring point
The average value of above three (or two) heat flow density is selected, and can determine that measurement patch aging to a certain extent；If meter
The heat flow density q of calculatingi1、qi2、qi3、qi4There are three above numerical bias not (2%-- in the range of setting in numerical value
5%), then illustrate that measuring point aging, the measuring point are useless point, need to change new measurement patch.
According to mentioned above principle select it is effective measure patch, and calculate separately out feature measuring point in different characteristic grid
Heat flow density calculates the real-time heat output of any grid of air cooling system heat sink assembly wall surface according to following formula：
Qi=Ai·qi
Wherein, QiFor the heat output of this feature grid, unit W, AiFor the area of this feature grid, unit m2。
The total heat transfer of each feature grid of air cooling system heat sink assembly wall surface is calculated according to following formula：
Wherein, Q is the total heat transfer of each feature grid of air cooling system heat sink assembly wall surface, unit W；N is
The number of grid division.
By the diabatic process of air cooling system heat sink assembly it is found that being connected by air cooling system heat sink assembly each
The heat flow of a heat transfer link be it is equal, i.e., it is described it is real-time heat transfer measuring device measurement result and air cooling heat radiator in it is wet
Heat output between steam and air cooling system heat sink assembly wall surface is equal：
Q=Qwall
Wherein, Q is the total heat transfer of each feature grid of air cooling system heat sink assembly wall surface, unit W；Qwall
For the heat output of moist steam and wall surface in air cooling system heat sink assembly, unit W, and heat absorption is just, heat release are negative.
The Integral Thought of this method is：First according to the heat flux distribution feature grid division of wall surface, the grid divided
Interior heat flux distribution is relatively uniform, and the heat flux distribution between grid and grid is different, thus only needs to install in single grid
One measurement patch, then can calculate the heat dissipation capacity of the grid according to the heat flow density for measuring the grid that patch measures,
It is exactly total heat-loss at wall amount that finally all grid heat dissipation capacities, which are added up,.
As shown in Fig. 2, a is the heat-delivery surface of tested heat sink assembly；B is to measure patch；C is real-time biography of the present invention
Apparatus for measuring amount of heat；D is heat-conducting silicone grease.
As shown in figure 3,3a is infrared imaging module；3b is heat flux distribution selection analysis and processing module；3c passes for data
Defeated module；3d is Data Management Analysis module.
As shown in figure 4,1., 2. ..., N is to constitute the several different Heat Conduction Materials for measuring patch；I is to measure patch
The thermal insulation material of side；II is the laminating apparatus for measuring patch；III is the thermal insulation material between several different Heat Conduction Materials.
Principle and implementation of the present invention are described for specific case used herein, and above example is said
The bright method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (9)
1. a kind of power plant Optimal Control System for the measurement that radiated based on air cooling system, which is characterized in that the system comprises：
Air cooling heat radiator component, heat sink assembly conduct heat in real time measurement subsystem, generating set dynamic operational behaviour analyzing subsystem,
Air cooling system running optimizatin subsystem and data transmission and data display subsystem；
The heat sink assembly measurement subsystem that conducts heat in real time is used for measuring the real-time heat dissipation capacity of air cooling system heat sink assembly,
Including several groups measurement patch, conduct heat measuring device in real time, and the real-time heat transfer measuring device includes chip surface temperature
Feature measurement module, heat flux distribution selection analysis and processing module, data transmission module and data analysis module；
The generating set dynamic operational behaviour analyzing subsystem be used for record, analyze and calculate unit operation energy efficiency indexes and
Efficiency data；
The air cooling system running optimizatin subsystem is used for the reality according to the generating set dynamic operational behaviour analyzing subsystem
When analyze data, calculate and analyze the number of units that current wind turbine or water pump are opened, and conduct heat in real time measurement according to heat sink assembly
The current real-time heat dissipation capacity and heat flux distribution situation that subsystem measures calculate the load of every Fans or water pump in air cooling system,
According to the operation of the every Fans of the corresponding variable frequency adjustment of result of calculation or water pump.
2. Optimal Control System according to claim 1, which is characterized in that the measurement patch is closely placed in air-cooled dissipate
Hot device assembly surface, described to measure the thin slice that patch is composite construction, laminating apparatus is arranged in the measurement patch periphery；The patch
Piece surface temperature feature measurement module obtains the temperature parameter that patch is measured described in several groups with infrared or thermocouple measurement mode.
3. Optimal Control System according to claim 2, which is characterized in that the measurement patch is by multiple and different heat conduction
Material is spliced.
4. the measuring device of air cooling system heat dissipation capacity in power plant according to claim 2, which is characterized in that the measurement patch
The shape of piece is round or polygon.
5. Optimal Control System according to claim 1, which is characterized in that the generating set dynamic operational behaviour analysis
Subsystem includes：Unit operation Monitoring Indexes and analytic unit, data transmission unit and data output and display unit, the machine
The monitoring of group operating index is with analytic unit for recording, analyzing and calculating and the relevant data of units consumption index.
6. Optimal Control System according to claim 1, which is characterized in that the data transmission and data display subsystem
Including data transmission unit and data display unit, the data transmission unit conducts heat measurement in real time for the heat sink assembly
Quantized system, the generating set dynamic operational behaviour analyzing subsystem, the air cooling system running optimizatin subsystem and described
Data interaction between data display unit；The data display unit is used for display parameters and index.
7. a kind of power plant optimal control method for the measurement that radiated based on air cooling system, which is characterized in that the method includes：
Several groups are measured patch to be uniformly mounted on air cooling system heat sink assembly surfaces externally and internally, the measurement that will conduct heat in real time dress
It sets and puts in place, it is ensured that during measurement, the visual field of infrared imaging module in the measuring device that conducts heat in real time
Central axis is vertical with the measurement patch；
According to the knot of real time heat flux Density Distribution Feature and air cooling heat radiator assembly surface that the heat transfer measuring device measures
Structure feature carries out mesh generation to air cooling heat radiator assembly surface, and adjusts air cooling heat radiator component according to the density degree of grid
The riding position and placement quantity of surface characteristics measuring point；
According to the feature measuring point riding position and placement quantity after optimization, the hot-fluid of measurement air cooling heat radiator assembly surface is close in real time
Distribution characteristics is spent, and air cooling heat radiator assembly surface is calculated according to the surface characteristics of air cooling heat radiator assembly surface and surface area
Real-time heat dissipation capacity；
Record, analyze and calculate with units consumption index related data, obtain analysis data；
According to the history optimized operation data and theory optimum analysis data adjusting wind under the analysis data, current operating condition
The operation of machine or water pump.
8. optimal control method according to claim 7, which is characterized in that according to the analysis data, currently run item
History optimized operation data and theoretical optimum analysis data under part adjust the operation of wind turbine or water pump, specifically include：
Vapour is determined according to the history optimized operation data analyzed under data, current operating condition and theoretical optimum analysis data
The maximum security boundary and optimized operation back pressure of turbine back pressure, calculate analyze and optimize number of units that current wind turbine or water pump are opened and
Open position, and the load of every Fans or water pump in air cooling system is calculated, according to the corresponding variable frequency adjustment of result of calculation per typhoon
The operation of machine or water pump, and guides the adjustment of summer high temperature period unit load, prevent winter low temperature period air cooling system freeze,
Optimize air cooling system heat-exchanging component and cleans the frequency.
9. optimal control method according to claim 7, which is characterized in that the optimal control method further includes：
Determine the air cooling system heat sink assembly wall surface temperature for measuring patch present position；
Obtain the surface temperature of the different Heat Conduction Materials of the measurement patch of the position；
Determine that multiple hot-fluids of the position are close according to the air cooling system heat sink assembly wall surface and multiple surface temperatures
Degree；
The difference between any two of multiple heat flow densities is judged whether within setting range, and patch is measured if so, determining
Piece measurement data is effective, if it is not, illustrating measuring point aging, which is useless point, the measurement patch more renewed.
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