CN205352114U - Air cooling condenser unit that operation is optimized - Google Patents
Air cooling condenser unit that operation is optimized Download PDFInfo
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- CN205352114U CN205352114U CN201521015713.1U CN201521015713U CN205352114U CN 205352114 U CN205352114 U CN 205352114U CN 201521015713 U CN201521015713 U CN 201521015713U CN 205352114 U CN205352114 U CN 205352114U
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Abstract
The utility model relates to an air cooling condenser unit that operation is optimized, include: the air cooling condenser, it has heat exchanger tube bundles and fan equipment, and the heat exchanger tube bundles structure is used for receiving the steam extraction that comes from the steam turbine, and fan equipment matees the setting with heat exchanger tube bundles and is used for cooling off into the comdenstion water with the steam extraction that flows among the heat exchanger tube bundles, data measurement and collection system, its structure are used for measuring and gathering the at least some controlled variable and the distubance variable of air cooling condenser, multivariable predicted control ware, it is because preset's modular unit prevents with the performance of optimizing the air cooling condenser that the steam turbine backpressure is less than the pressure protection limit value scope of settlement and prevents that the comdenstion water temperature is less than condensation temperature preset limit value according to at least some controlled variable who comes from data measurement and collection system and the control variable who disturbs change numerical value of a quantity automatic control fan equipment simultaneously.
Description
Technical field
This utility model relates to the air cooling tubes condenser unit of a kind of running optimizatin, more particularly, to a kind of air cooling tubes condenser unit optimizing operation based on umlti-variable finite elements.
Background technology
In shop equipment, the steam in steam turbine completes expansion process, is mechanical energy by thermal energy, and this mechanical energy such as can be used for electrical power generators or drives compressor.It is that after making driving steam turbine work done, the steam discharged becomes the heat-exchange apparatus condensing water for the condenser of steam turbine.The condensation water discharged from condenser is then delivered into boiler by condensate pump through feed-water heater, feed pump etc., forms steam and is delivered to steam turbine, thus ensureing continuously performing of whole thermodynamic cycle after boiler heats.
Direct air is called direct air cooled condenser unit (being also known as direct air cooling system or ACC system) as the unit that turbine discharge is condensed by cooling medium, typically comprise steam turbine, blow-off line, condenser, cooling blower, its technological process is that turbine discharge passes through thick blow-off line to being typically placed in outdoor condenser, cooling blower (is generally tube-axial fan) and forces air over condenser, take away the heat of steam discharge, thus steam discharge is condensed into water.
Air cooling tubes condenser unit has that simple in construction, floor space be few, the adjustment advantage more flexibly of system.But, in actual running, its shortcoming is also obvious: energy consumption is big, for instance power consumption can be big to adopt forced ventilation to cause；System fluctuation of service such as affected by environment greatly.Such as when summer high temperature, turbine back pressure raises, and has a strong impact on unit safety operation.In addition; when disadvantageous wind direction, wind speed and the upstream building impact on air circulation occur; hot reflux and heat radiation that such as unfavorable wind direction causes are not smooth; turbine back pressure also can raise suddenly; steam turbine output drop, it could even be possible to cause that turbine back pressure exceedes back-pressure protection limit value and tripping grinder.Under some pole harsh conditions, for instance when ambient temperature is lower than zero degree, turbine back pressure can drop too low, it is easy to causes the damage of steam turbine most end grade blade, freeze and frost crack pipe additionally, air cooling system is susceptible to condensed water.
Therefore, the subject matter of puzzlement industry is how to make whole air cooling system reliablely and stablely run under changeable environment and keep running with optimum performance, for instance avoid air cooling system occur bigger loss of thermal properties during summer and prevent from freezing in the winter time.For described problem, one of existing coping strategy is by operator's switch according to Changes in weather and the monitoring result manual operation blower fan to system, but, this exists serious delayed and very easily occurs that operational error and system are unstable.Control it addition, operator may be based on simple classical control system to the operation/shutdown implementing air cooling system.At present, the controller that this type of classical control system adopts is PID (proportional-integral-differential) type controller mostly, or PID control basis on take some Adaptive steps after composition self-adaptive PID controller.But, owing to traditional PID controller is inherently delayed adjustment, thus causing that PID type controls system and there is many deficiencies on Control platform.
Owing to traditional coping strategy or control method are excessively coarse, it is easy to cause that blower fan power consumption is excessive and cause unnecessary waste, and it is susceptible to violent operational factor fluctuation and causes that whole air cooling system is unstable, reliability reduces.It is of particular importance that can not remain that air cooling system runs with optimum state.
In view of the above, what this utility model was intended to overcome in the problems referred to above is one or more.
Utility model content
The purpose of this utility model is to provide the air cooling tubes condenser unit of a kind of running optimizatin, this air cooling tubes condenser unit can when reliability and stability runnability optimum.
Above-mentioned purpose realizes mainly through such concept: the air cooling tubes condenser unit of a kind of running optimizatin, including:
Air cooling tubes condenser, it has heat-exchanging tube bundle and Fan Equipment, and heat-exchanging tube bundle is configured to receive the steam discharge from steam turbine, and Fan Equipment mates setting in order to the steam discharge flowed in heat-exchanging tube bundle is cooled to condensed water with heat-exchanging tube bundle；
DATA REASONING and acquisition system, its at least part of controlled variable and disturbance variable of being configured to measure and gather air cooling tubes condenser；
Multivariable predictive controller; it is based on modular unit set in advance, and the control variable according to automatically controlling Fan Equipment from least part of controlled variable of DATA REASONING and acquisition system and the numerical value of disturbance variable prevents turbine back pressure from exceeding the pressure protection limits of setting and preventing condensate temperature lower than condensed water temperature preset limit value with the performance optimizing air cooling tubes condenser simultaneously.
By advantageously can perform the control to air cooling tubes condenser unit in real time, incessantly according to control system of the present utility model, keep unit to run when safe, reliable, efficient, economical always.
Advantageously, described control variable includes fan operation number, rotation speed of fan, blower fan rotation direction.
Advantageously, described controlled variable includes turbine back pressure, turbine discharge temperature, condensate flow, condensate temperature.
Advantageously, described disturbance variable includes ambient temperature, humidity, wind-force, wind direction, rainfall grade, snow level, sunlight intensity.
Advantageously, the coefficient of the performance for evaluating air cooling tubes condenser is defined as QHeat exchange flow/PBlower fan, wherein PBlower fanFor the power that fan operation consumes, QHeat exchange flowActual heat exchange flow for air cooling tubes condenser.
Advantageously, modular unit set in advance in described multivariable predictive controller, including model module, prediction module and execution module, model module includes by the periodicity of air cooling tubes condenser unit is monitored the multiple-input and multiple-output step corresponding model built, prediction module is based on constructed model prediction and exports the variable quantity that control variable needs, and described execution module structure is for being applied to air cooling tubes condenser unit by the dynamical output of described prediction module.
Advantageously, described multivariable predictive controller also includes the maintenance module being connected with described prediction module and execution module, after carrying out controlling in real time in described execution module, described multivariable predictive controller is safeguarded.
Protect limits according to the pressure that the air cooling tubes condenser unit with multivariable predictive controller of the present utility model can regulate to prior early warning when being changed by the service condition of multiple parameter characterizations to avoid turbine back pressure to exceed setting and avoid condensate temperature lower than condensed water temperature preset limit value; and optimize the operation of air cooling tubes condenser unit; therefore; substantially increase control accuracy; owing to controlling the forecast function of system; make it possible to tackle ahead of time the change of service condition, it is to avoid the hysteresis quality occurred in manual control or Traditional control.
Accompanying drawing explanation
Embodiment of the present utility model is further described hereinafter with reference to accompanying drawing, in the accompanying drawings:
Fig. 1 illustrates the principle boiler circuit schematic diagram of exemplary air cooling tubes condenser unit；
Fig. 2 illustrates according to the schematic diagram of the data cube computation of multivariable predictive controller, air cooling tubes condenser and DATA REASONING and acquisition system in air cooling tubes condenser unit of the present utility model；And
Fig. 3 illustrates the multiple-input and multiple-output step response curve figure of the structure basic data of the prediction module of the multivariable predictive controller as this utility model air cooling tubes condenser unit.
Detailed description of the invention
Fig. 1 illustrates exemplary boiler circuit figure, and the boiler circuit shown in this includes boiler 10, steam turbine 14, electromotor 18 and air cooling tubes condenser unit 21.Boiler forms water vapour by combustion heating water, and water vapour 12 is flowed into steam turbine 14 by the road, and the water vapour of heat expansion driven steam turbine in steam turbine rotates, and steam turbine is generated electricity by output shaft 16 drive electrical generators 18.And the steam discharged from steam turbine 14 20 enters direct-type air cooling tubes condenser unit 21 by the road.Air cooling tubes condenser unit 21 mainly includes air cooling tubes condenser 22.Air cooling tubes condenser 22 includes heat-exchanging tube bundle 26 and Fan Equipment 32.Heat-exchanging tube bundle 26 receives the turbine discharge from pipeline 20, all of steam discharge is collected in public upper header 24, the pipe constituting heat-exchanging tube bundle arranges along the bearing of trend of upper header 24 by an angle respectively, constitute left side tube section 26 and the right side tube section 28 of A font, have cleithral configuration in general.Fan Equipment 32 includes blower fan 34 and the blower motor 36 for driving blower fan to rotate.Fan Equipment 32 is arranged in the space limited by left side tube section 26 and right side tube section 28.The blower fan 34 rotated forces the air from surrounding to flow through heat-exchanging tube bundle 26, simultaneously, air outside being flowed in each pipe on the way with pipe from the steam in upper header 24 carries out heat exchange, steam cooled in left side tube section 26 and right side tube section 28 flow in lower header 30, and flow to boiler 10 further along condensation water collection pipeline 38.
Air cooling tubes condenser unit 21 also includes DATA REASONING and the acquisition system of at least part of controlled variable and disturbance variable for measuring and gather air cooling tubes condenser.For the sake of clarity, in Fig. 1, being diagrammatically only by property illustrates a part of parts of DATA REASONING and acquisition system, for instance pressure transducer (in figure PT), temperature sensor (in figure TT), mass flowmenter (in figure FT).These pressure transducers, temperature sensor and mass flowmenter are arranged to such as to measure and gather the throttle (steam) temperature of air cooling tubes condenser, pressure and flow, the temperature of condensed water, pressure and flow, the inflow temperature (ambient temperature) of air and the outlet temperature of each pipe of heat-exchanging tube bundle etc. discharged from air cooling tubes condenser.DATA REASONING and acquisition system may also include the measurement apparatus being arranged to measure weather condition (such as wind-force, wind direction, rainfall, snow level) and measure instrument for measuring current blower fan operating number, the frequency of electric machine for fan, electric current, voltage etc..Therefore, control variable, controlled variable and disturbance variable can be divided into by the data that this DATA REASONING and acquisition system are obtained.
But " controlled variable " refers to indirectly can control the variable that can not be directly manipulated based on the moving law of air cooling tubes condenser unit in addition herein, such as turbine back pressure is (namely, the initial steam pressure of air cooling tubes condenser), turbine discharge temperature (that is, the throttle (steam) temperature of air cooling tubes condenser), condensed water water temperature, condensate flow.
Herein " disturbance variable " refer to from extraneous (but not air cooling tubes condenser unit itself) especially can not the parameter of manual control or influence factor, for instance ambient temperature, humidity, wind-force, wind direction, rainfall grade, snow level, sunlight intensity.In interference parameter, ambient temperature is particularly important, and it is directly equivalent to the wind pushing temperature of blower fan.
" control variable " refers to the variable such as can directly handled by the mode of order or instruction and be controlled during air cooling tubes condenser unit operation herein, for instance the number of units of the blower fan of actual motion, the rotating speed of each Fans, blower fan turning etc. in blower fan apparatus.These variablees can change either directly through the order of such as controller or regulate.
Air cooling tubes condenser unit 21 also includes multivariable predictive controller, and it is configured to prevent turbine back pressure from exceeding the pressure protection limits of setting and preventing condensate temperature lower than condensed water temperature preset limit value based on modular unit set in advance and based on the control variable automatically controlling Fan Equipment from least part of controlled variable of DATA REASONING and acquisition system and the numerical value of disturbance variable with the performance optimizing air cooling tubes condenser simultaneously.
Herein, " performance of air cooling tubes condenser " refers to the index that the operation characteristic of air cooling tubes condenser was considered or evaluated to the relevant parameters such as comprehensive utilization air cooling tubes condenser heat exchange efficiency, the pressure loss, design heating load, heat exchange flow, blower fan consumption power.It is said that in general, air cooling tubes condenser is as heat exchanger, answer its heat exchange efficiency operationally of primary concern.But, for air cooling tubes condenser unit of the present utility model, it is advantageous to, for evaluating the coefficient ε=Q of the performance of air cooling tubes condenserHeat exchange flow/PBlower fan, wherein PBlower fanFor the power that fan operation consumes, QHeat exchange flowActual heat exchange flow for air cooling tubes condenser.
Herein, " the pressure protection limits of setting " refers to H >=turbine back pressure PBack pressure>=L, wherein H is the highest allowable value of exhaust steam pressure set for specific steam turbine, and L is the minimum allowable value of exhaust steam pressure set for specific steam turbine.Steam turbine protects energy normal operation in limits far without departing from its design back-pressure value at the pressure of this setting.When turbine back pressure is beyond its highest allowable value; steam turbine is exerted oneself and is declined to a great extent or substantially do not exert oneself; economy significantly reduces, and the parts stress such as the flange of turbine discharge part, bolt increases, the self-protection system start-up of water-steam system in this situation and tripping grinder.When turbine back pressure is lower than minimum allowable value, most end grade blade subjected to stress can exceed that permissible value, and exhaust steam moisture increases, it will the erosion of aggravation blade damages.
Herein, " condensed water temperature preset limit value " refers to the highest condensed water water temperature t being generally speaking easier to frost crack pipel, when the condensed water water temperature at arbitrary place is lower than this condensed water temperature preset limit value tlTime, there is the Probability maximum of frost in corresponding pipeline.In order to avoid frost crack pipe, it should be ensured that the condensed water water temperature at arbitrary place is all higher than this preset limit value.
Why the above-mentioned two controlled variable of air cooling tubes condenser unit being provided certain constraints, be because it is examination air cooling tubes condenser unit heat economy and the particularly critical factor of safety in operation.And above-mentioned two controlled variable also can change because of the change of disturbance variable, for instance, summer high temperature condition tubine exert oneself problem, winter low temperature when frost crack pipe problem.
1) exert oneself summer problem
The heat transfer area of air cooling tubes condenser is according to certain ambient temperature design.When ambient temperature is too high, turbine back pressure necessarily raises.Although steam turbine is adapted to large range of economy, but always exerts oneself because back pressure makes steam turbine be forced reduction beyond scope of design for some time in 1 year.Experience have shown that, affect the key factor that unit in summer exerts oneself and be in that steam turbine itself is under high back pressure operating mode the safety of longtime running.
As counter-measure, (1) regulates cooling air delivery by increasing rotation speed of fan, increase air stream and heat exchange between steam discharge in air cooling tubes condenser heat-exchanging tube bundle；(2) owing to being subject to the restriction of blower fan peak power, it would however also be possible to employ the method for flushing keeps air cooling tubes condenser heat-exchanging tube bundle outer surface cleaning, reduces thermal resistance, improves the heat exchange efficiency of air cooling tubes condenser；(3) in the conceived case, it would however also be possible to employ in cooling air stream, the method for water spray improves the coefficient of heat transfer.These counter-measures can either directly through controlling or the on-off control of respective valves implemented blower fan.
2) preventing freeze in winter problem
Owing to air cooling tubes condenser is in outdoor outdoor layout, the risk factor that frost occurs is had in cold winter, place particularly in equipment start-up course and when load is relatively low and in systems populated with non-condensable gas easily freezes, time serious, tube bank and condensate pipe deformation, pipe bursting by freezing, cause relevant device to stop transport.
The main antifreezing measures considered have following several: (1) is by regulating steam flow to the control of the valve arranged on jet chimney, when steam turbine heat exhaust is less and temperature is relatively low, cut off the valve of certain several heat-sink unit, heat is concentrated in remaining heat-sink unit, to increase its thermic load.The heat-sink unit stopped transport still keeps vacuum state, can prevent air cooling tubes condenser from corroding, and can put into operation at any time；(2) cooling air delivery is regulated, for instance reduce rotation speed of fan or stoppage in transit part fan.
As can be seen here, change corresponding to turbine back pressure variable and condensate temperature variable, control the most direct and easy is the control to blower fan, additionally when Fan Equipment adds frequency-converting control device, blower fan can be controlled regulate in 20%～100% rated speed, with adaptation condition requirement.If the part fan long period run at minimum speed, can this part fan of stall automatically；If put into operation, blower fan all reaches maximum speed, other standby fans of automatically starting.
It is therefore preferred that the multivariable predictive controller of air cooling tubes condenser unit of the present utility model selects using the parameter (such as fan operation number, rotation speed of fan etc.) relevant with Fan Equipment as control variable.Certainly, those skilled in the art can using the parameter relevant with the aperture of the desuperheat water injection system in air cooling tubes condenser unit, the tube bank operation of rinse-system or air cooling tubes condenser admission valve as control variable.
That is, the enforcement of all above-mentioned counter-measures all relies on the execution to the control instruction sent by multivariable predictive controller." control instruction " refers to control variable variable quantity in the desired direction.In this utility model, by multivariable predictive controller, security of system sex chromosome mosaicism can not only be solved, moreover it is possible to take into account the performance optimization problem of air cooling tubes condenser.
Mainly introduce structure and its operation principle of multivariable predictive controller below.
In this utility model, multivariable predictive controller includes modular unit set in advance.In an advantageous embodiment, this modular unit includes model module, prediction module and execution module.Model module includes by the periodicity of air cooling tubes condenser unit is monitored the multiple-input and multiple-output step corresponding model built, prediction module is based on constructed model prediction and exports the variable quantity that control variable needs, described execution module structure is for being applied to air cooling tubes condenser unit by the dynamical output of described prediction module, shown in Figure 2.
The structure basis of model module is the boiler circuit at air cooling tubes condenser unit place, and boiler part and steam turbine part in this boiler circuit can set up corresponding mathematical model by the mode emulated.For air cooling tubes condenser unit part, the variable involved by the mathematical model of its correspondence includes following many groups: 1) the geometric parameter such as length and diameter of blow-off line 20；2) parameter relevant with air cooling tubes condenser 22, such as enter the exhaust steam pressure of air cooling tubes condenser, temperature, flow, the quantity of heat-exchanging tube bundle 26 and distribution situation, effective area of dissipation, rotation speed of fan, ambient temperature, wind scale, rainfall snow level, sun exposure intensity distributions, from condensate temperature, pressure and flow etc. that condenser system is discharged；3) with the relevant parameter of condensate water collecting pipeline 38, for instance the rotating speed of condensate pump, condensate tank volume etc.；4) aid system relevant with condenser system such as desuperheat water injection system or rinse-system (not shown in FIG. 1) parameter etc. is set.Although above-mentioned some variablees that list, but, actual air cooling tubes condenser unit can have more parametric variable due to the difference of structure or type of arrangement, therefore, it is not limited to the above-mentioned variable provided.Would correspond to the mathematical model of boiler part and steam turbine part and the mathematical model corresponding to air cooling tubes condenser unit is organically combined and constitutes the mathematical model of whole boiler circuit.Then, according to measurement data to boiler circuit corresponding to reality of DATA REASONING and acquisition system, the mathematical model built is tested.Test is by each input variable is carried out upset test, records simultaneously, gathers the data of its dependent variable.Test period is at least 1 year, is otherwise difficult to cover the various operating conditions of air cooling tubes condenser unit.The test job of model module is very crucial, if test is accurately, then the model obtained is just more accurate and true to nature, has had accurate model, multivariable predictive controller forecast period can provide accurate, reasonably export.
The structure of prediction module is also based on the discrimination of model module, by applying step disturbance, sets up the multiple-input and multiple-output step response model of air cooling tubes condenser unit.This step response model can be used to represent the relation between multiple input variable and multiple output variable, namely by this step response model matrix, it is possible to when knowing input, output is predicted (shown in Figure 3).Such as, by input rotation speed of fan variable quantity, it was predicted that the variable quantity of air cooling tubes condenser initial steam pressure of air cooling tubes condenser unit, condensed water temperature variable quantity.Then judge whether the output obtained drops on the constraints of turbine back pressure and condensate temperature, if dropping in the constraints of turbine back pressure and condensate temperature, perform module and determine the solution value (such as blower fan optimum speed, the variable quantity that namely control variable needs) so that air cooling tubes condenser best performance again.If performing module to judge the constraints beyond turbine back pressure and condensate temperature, informing that prediction module order prediction module are by given direction adjustment input, predict again, so circulation is until giving the solution value of air cooling tubes condenser best performance of sening as an envoy to.
Perform the parts communications such as module and the Fan Equipment of air cooling tubes condenser unit, desuperheat water injection system, rinse-system, flow adjusting valve for steam to be connected.When performing the output that module receives from prediction module, perform module and this output is converted into command instruction and sends it on corresponding controlled part such as electric machine for fan.
Thus, corresponding to the actual operating state of boiler circuit or air cooling tubes condenser unit, multivariable predictive controller is constantly in on-line operation state, and output is dynamically applied to controlled device by multivariable predictive controller, controls in real time.
Additionally, as a good embodiment, multivariable predictive controller of the present utility model can also include the maintenance module being connected with described prediction module and execution module, after carrying out controlling in real time in described execution module, described multivariable predictive controller is safeguarded.The process of this maintenance specifically includes: revise constraints by detecting the actually lower limit of control variable and controlled variable, guarantee the actually lower limit of described control variable and controlled variable in allowed limits, it is ensured that the optimum of described multivariable predictive controller performance.
It is closed loop system due to what whole multivariable predictive controller adopted and dynamically controls based on mathematical model, therefore, it is entirely the operation of real time control machine group, and the generation of the events such as this control method energy look-ahead particular event such as frost, and make feedback in time, avoid the delayed of manual control, and reduce the risk that Non-follow control mistake occurs.
Industrial applicibility
The running example of air cooling tubes condenser unit of the present utility model is described below so that its advantage to be described:
When ambient temperature higher (such as in summer), DATA REASONING and acquisition system monitor steam turbine due to back pressure is too high and the reduction that causes exerting oneself, current rotation speed of fan is not enough to be reduced to turbine discharge of a sufficiently low temperature, so that steam turbine throttle flow increases, turbine back pressure raises.Multivariable predictive controller is according to its step corresponding model prediction variation tendency of controlled variable such as turbine back pressure (steam turbine output), the performance of whole air cooling tubes condenser, condensate temperature produced by the change of this control variable of rotation speed of fan and steam turbine this control variable of throttle flow, and calculates when air cooling tubes condenser best performance the variable quantity required for control variable.This variable quantity is applied to controlled device by control system so that air cooling tubes condenser unit runs under optimum condition.When necessary, multivariable predictive controller can consider that other control variable such as starts or close desuperheat water injection system or the strategy of air cooling tubes condenser rinse-system.
When ambient temperature relatively low (such as in the winter time), DATA REASONING and acquisition system monitor that condensate temperature is too low, turbine back pressure is too low.Multivariable predictive controller, according to its predetermined module and based on the numerical value from least part of controlled variable of DATA REASONING and acquisition system and disturbance variable, exports the variation targets value relevant with Fan Equipment and is applied in Fan Equipment by this output (such as stop transport and have the part fan of particular number).When necessary, multivariable predictive controller can consider other control variable such as stoppage in transit blower fan or start the strategy of appendage vacuum pump.
Pass through this utility model so that air cooling tubes condenser unit energy meets the operation of various operating mode (including winter, summer, different load, Unit Commitment, bypass operation etc.).The adjustment running blower fan is combined closely with ambient air temperature, steam turbine exhaust pressure, condensation water temperature, the operation number of units of blower fan, rotation speed of fan etc. can be automatically adjusted, make the condensate temperature equiblibrium mass distribution of each air cooling tubes condenser, reach total energy consumption to minimize, while increasing the operational reliability of unit, realize certain economy objectives.
Although described above of the present utility model is for the direct-type air cooling tubes condenser unit shown in scheming, but, it may occur to persons skilled in the art that, this utility model is also applied for indirect type air cooling tubes condenser unit (compared with direct-type air cooling tubes condenser unit, be additionally arranged the condenser arranged in steam turbine downstream, in this condenser the steam discharge of steam turbine and air cooling tubes condenser carries out between the fluid of closed cycle heat exchange).
Claims (7)
1. an air cooling tubes condenser unit for running optimizatin, including:
Air cooling tubes condenser, it has heat-exchanging tube bundle and Fan Equipment, and heat-exchanging tube bundle is configured to receive the steam discharge from steam turbine, and Fan Equipment mates setting in order to the steam discharge flowed in heat-exchanging tube bundle is cooled to condensed water with heat-exchanging tube bundle；
DATA REASONING and acquisition system, its at least part of controlled variable and disturbance variable of being configured to measure and gather air cooling tubes condenser；
Multivariable predictive controller; it is based on modular unit set in advance, and the control variable according to automatically controlling Fan Equipment from least part of controlled variable of DATA REASONING and acquisition system and the numerical value of disturbance variable prevents turbine back pressure from protecting limits lower than the pressure set and preventing condensate temperature lower than condensed water temperature preset limit value with the performance optimizing air cooling tubes condenser simultaneously.
2. air cooling tubes condenser unit according to claim 1, it is characterised in that described control variable includes fan operation number, rotation speed of fan, blower fan rotation direction.
3. air cooling tubes condenser unit according to claim 1, it is characterised in that described controlled variable includes turbine back pressure, turbine discharge temperature, condensate flow, condensate temperature.
4. air cooling tubes condenser unit according to claim 1, it is characterised in that described disturbance variable includes ambient temperature, humidity, wind-force, wind direction, rainfall grade, snow level, sunlight intensity.
5. the air cooling tubes condenser unit according to any one of claim 1-4, it is characterised in that for evaluating the coefficient ε=Q of the performance of air cooling tubes condenserHeat exchange flow/PBlower fan, wherein PBlower fanThe power consumed during for fan operation, QHeat exchange flowActual heat exchange flow for air cooling tubes condenser.
6. the air cooling tubes condenser unit according to any one of claim 1-4, it is characterized in that, in described multivariable predictive controller, modular unit set in advance includes model module, prediction module and execution module, model module includes by the periodicity of air cooling tubes condenser unit is monitored the multiple-input and multiple-output step corresponding model built, prediction module is based on constructed model prediction and exports the variable quantity that control variable needs, and described execution module structure is for being applied to air cooling tubes condenser unit by the dynamical output of described prediction module.
7. air cooling tubes condenser unit according to claim 6, it is characterized in that, described multivariable predictive controller also includes the maintenance module being connected with described prediction module and execution module, after carrying out controlling in real time in described execution module, described multivariable predictive controller is safeguarded.
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| CN106225501A (en) * | 2016-08-31 | 2016-12-14 | 华能白山煤矸石发电有限公司 | A kind of Freezing of Direct Air-Cooled Condenser Unit system and method |
| CN106247815A (en) * | 2016-07-19 | 2016-12-21 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of control method of the in line big machine air cooling system of the little machine of supercritical thermal power unit |
| CN106246527A (en) * | 2016-08-22 | 2016-12-21 | 哈尔滨工业大学 | The steam feed pump interference suppressing method that the little machine of Direct Air-cooled Unit is in line |
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| CN106247815B (en) * | 2016-07-19 | 2018-04-20 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of control method of the in line big machine air cooling system of the small machine of supercritical thermal power unit |
| CN106246527A (en) * | 2016-08-22 | 2016-12-21 | 哈尔滨工业大学 | The steam feed pump interference suppressing method that the little machine of Direct Air-cooled Unit is in line |
| CN106246527B (en) * | 2016-08-22 | 2017-11-07 | 哈尔滨工业大学 | The in line steam feed pump interference suppressing method of the small machine of Direct Air-cooled Unit |
| CN106225501A (en) * | 2016-08-31 | 2016-12-14 | 华能白山煤矸石发电有限公司 | A kind of Freezing of Direct Air-Cooled Condenser Unit system and method |
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| CN108675465A (en) * | 2018-07-09 | 2018-10-19 | 上海铱钶环保科技有限公司 | Condenser circulating water handles the predictive monitoring system and monitoring method of scale inhibition effect |
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