CN105444356B - A kind of the efficiency Intelligent Optimal control system and its control method of central air conditioner system - Google Patents
A kind of the efficiency Intelligent Optimal control system and its control method of central air conditioner system Download PDFInfo
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- CN105444356B CN105444356B CN201510903746.8A CN201510903746A CN105444356B CN 105444356 B CN105444356 B CN 105444356B CN 201510903746 A CN201510903746 A CN 201510903746A CN 105444356 B CN105444356 B CN 105444356B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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Abstract
The present invention relates to the efficiency Intelligent Optimal control systems and its control method of a kind of central air-conditioning, comprising: acquisition unit, monitoring unit, arithmetic element, control unit and the receiving unit and display unit connecting respectively with control unit.Control unit is for judging whether the operation result meets default Rule of judgment, and when meeting the default Rule of judgment, using control strategy control water cooler cooling cycle system corresponding with the default Rule of judgment, the operation of water circulation system, cooling water recirculation system, the air conditioning terminal circulatory system and the cooling tower circulatory system is freezed.The efficiency Intelligent Optimal control system of central air-conditioning of the present invention real-time monitoring can track the big subitem electrical equipment electricity consumption data of central air conditioner system five for a long time, and these data are gone to compare with setting value, evaluate the efficiency grade of each loop of central air conditioner system, and suitable control strategy is selected according to these evaluation results, it is optimal the efficiency of central air conditioner system.
Description
Technical field
The present invention relates to the efficiencies of central air-conditioning automation control area more particularly to a kind of central air conditioner system to optimize intelligence
It can control system and its control method.
Background technique
With the raising of China's rapid development of economy and living standards of the people, environment, resource problem are by social each
The common concern on boundary, energy-saving and emission-reduction seem especially urgent.Central air conditioner system is architectural energy consumption rich and influential family, universal operational energy efficiency compared with
Low, there are the biggish energy saving spaces.Can reach certain energy-saving effect using general automation control means, but it is existing from
Dynamic control product is by general experience, and to refrigeration station refrigeration machine and its matched water pump, cooling tower etc. carries out start-stop
Control, realizes unattended operation, to achieve the purpose that more more energy efficient than artificial start-stop equipment, energy-saving benefit is small
's.
Currently, the technological transformation of air-conditioning equipment, PLC intelligent control, frequency control etc. are the masters of central air-conditioning energy technology
Want means.But central air conditioner system equipment coordination running technology is complicated, running environment parameter is changeable, needs to comprehensively consider system each
The technical factor of link can be only achieved ideal energy-saving effect, and transformation and control program only carry out by rule of thumb, lack the number of science
According to foundation, can achieve what energy conservation object can be with scientific forecasting yet, therefore energy-saving effect produces little effect.For example, cooling water
In the case where the reference of the numerical value of no efficiency tracking system, often cooling water pump conveying energy consumption is reduced for the frequency conversion of pump, but is made
The energy consumption of cold group increases, and overall energy consumption increases instead.So the frequency conversion of water pump cannot be the energy-efficient of central air-conditioning
Operation provides preferable help.The operation reserve of refrigeration unit is the key that whole system efficiency height, tracks system without efficiency
The real-time tracking items energy efficiency indexes of system are difficult to find the minimum boundary point of variable-flow, water cooler variable temperature control
Boundary condition and more operation optimum operation collocation efficiency highest points etc., and these exactly improve system entirety efficiency
It is crucial.
Summary of the invention
The present invention provides a kind of efficiency Intelligent Optimal control systems of central air conditioner system, are asked with solving above-mentioned technology
Topic.
In order to achieve the above object, the technical scheme of the present invention is realized as follows: a kind of efficiency of central air-conditioning optimizes
Intelligence control system, comprising: acquisition unit, monitoring unit, arithmetic element, control unit and display unit；Acquisition unit is used for
Acquire water cooler cooling cycle system, freezing water circulation system, cooling water recirculation system, the cooling tower circulatory system and air-conditioning end
Hold the data parameters of the circulatory system；Acquisition unit includes electric energy meter, power transducer, flow transmitter, temperature transmitter, humidity
One or more of transmitter, for monitoring temperature, power, power consumption, cooling capacity, humidity, efficiency and the interior of central air-conditioning
External environment parameter；Monitoring unit is connected with acquisition unit, for monitoring acquisition unit, to obtain monitoring result；Arithmetic element
It is connect with monitoring unit, the data operation for being monitored according to monitoring unit goes out entire central air conditioner system and water cooler refrigeration
The load of the circulatory system, freezing water circulation system, cooling water recirculation system, the cooling tower circulatory system and the air conditioning terminal circulatory system
Rate and efficiency；Control unit is connected with arithmetic element, for judging whether operation result meets default Rule of judgment, and full
When the default Rule of judgment of foot, using control strategy corresponding with default Rule of judgment control water cooler cooling cycle system,
Freeze the operation of water circulation system, cooling water recirculation system and the cooling tower circulatory system；Display unit connects control unit, uses
In the entire central air conditioner system of display and water cooler cooling cycle system, freezing water circulation system, cooling water recirculation system, sky
Adjust real-time running state, rate of load condensate, efficiency and the efficiency grade of the end circulatory system and the cooling tower circulatory system.
Further, further include receiving unit, be connected with control unit, the control strategy inputted for receiving user, and/
Or the default Rule of judgment for receiving user's input.
Further, control unit includes water cooler control module, water cooler correction module, chilled water pump control mould
Block, chilled water pump correction module, cooling water pump control module, cooling water pump correction module, cooling tower control module, cooling tower entangle
Mismatch block and team control module；Water cooler control module connects water cooler, for controlling water cooler cooling water and chilled water
The opening and closing of the electric butterfly valve and unit itself of water supplying pipe, water cooler correction module is for feeding back water cooler and correspondence
Butterfly valve real-time status to control unit；Chilled water pump control module connects the control switch of chilled water pump, cold for controlling
Freeze the opening and closing of water pump control switch, chilled water pump correction module is used to feed back the real-time status of chilled water pump to controlling list
Member；Cooling water pump control module connects the control switch of cooling water pump, for controlling unlatching and the pass of refrigeration machine controlling switch
It closes, cooling water pump correction module is used to feed back the real-time status of cooling water pump to control unit；The connection of cooling tower control module is cold
But the control switch of tower, the opening and closing of the inlet valve for controlling cooling water pump controlling switch and cooling tower, cooling tower entangle
Mismatch block is used to feed back the real-time status of cooling tower and inlet valve to control unit；Control unit is according to arithmetic element operation
Real-time load rate control team control module add machine or subtract machine.
Further, water cooler cooling cycle system includes refrigeration controler, and refrigeration controler is for adjusting water cooler
Water outlet temperature setting value, water cooler control module connect refrigeration controler, for by water cooler control module it is automatic
Adjust water outlet temperature setting value.
A kind of control method of such as efficiency Intelligent Optimal control system of above-mentioned central air-conditioning, comprising the following steps:
(1) control unit water cooler control module control water cooler cooling water and chilled water inlet and outlet pipes it is electronic
Butterfly valve, if electric butterfly valve is not normally-open, water cooler correction module is sounded an alarm, and stops opening electric butterfly valve, and by mistake
Information is sent to control unit；If it is more water cooler combined operatings, the control of water cooler control module opens next
The electric butterfly valve of water cooler, and repeat the operation logic；
(2) after the electric butterfly valve of water cooler is normally-open, the cooling tower control module of control unit controls cooling tower control
The inlet valve of system switch and cooling tower is opened, if cooling tower and inlet valve be not normally-open, cooling tower correction module hair
Alarm out stops opening cooling water pump controlling switch and closes inlet valve；If it is more cooling tower combined operatings, cooling tower control
The control switch and inlet valve of next cooling tower are opened in the control of molding block, and repeat the operation logic；
(3) after cooling tower is normally-open, the control switch of the chilled water pump control module control chilled water pump of control unit
It opens, if chilled water pump is not normally-open, chilled water pump correction module is sounded an alarm, and stops opening chilled water pump control switch；
If it is more chilled water pump combined operatings, chilled water pump control module controls next chilled water pump and opens, and repeats the fortune
Row logic；
(4) after chilled water pump is normally-open, the control of the cooling water pump control module control cooling water pump of control unit is opened
It closes and opens, if cooling water pump is not normally-open, cooling water pump correction module is sounded an alarm, and is stopped unlatching cooling water pump control and is opened
It closes；If it is more cooling water pump combined operatings, cooling water pump control module controls next cooling water pump and opens, and repeating should
Operation logic；
(5) after cooling water pump is normally-open, the water cooler control module control water cooler of control unit is opened, if cold
Water dispenser group is not normally-open, and water cooler correction module stops opening water cooler, and error message is sent to control unit
And it alarms；If it is more water cooler combined operatings, then water cooler control module controls next water cooler and opens, and
Repeat the operation logic.
Further, in step (2), cooling tower control module connects a fan frequency converter, when cooling tower control module
After opening cooling water pump controlling switch and inlet valve, fan frequency converter is become larger by low frequency gradually up to power frequency, then further according to cold
But water leaving water temperature adjusts fan frequency converter frequency with the temperature difference setting value of the wet-bulb temperature of air, until cooling water leaving water temperature
With the temperature difference setting value of the practical temperature difference approach cooling tower circulatory system of the wet-bulb temperature of air；Combine if it is more cooling towers
Operation, then when cooling water leaving water temperature is less than temperature difference setting value but the operation of separate unit cooling tower not with the temperature difference of the wet-bulb temperature of air
When being able to satisfy regulatory demand, control unit opens new operation combination by the operation result of arithmetic element；Temperature difference setting value is
5-15℃。
Further, in step (3), chilled water pump control module connects a chilled water pump frequency converter, works as chilled water pump
Control module opens the control switch of chilled water pump, and chilled water pump frequency converter is become larger by low frequency gradually until power frequency, then root again
According to chilled water for the frequency of the temperature difference setting value adjustment chilled water pump frequency converter of return water, until the practical temperature difference of the chilled water for return water
The temperature difference setting value of value approach chilled water circuit；If it is more chilled water pump combined operatings, then when chilled water is for the reality of return water
Border temperature difference is less than temperature difference setting value but separate unit chilled water pump is run when not being able to satisfy regulatory demand, and control unit passes through operation list
The operation result of member opens new operation combination；Temperature difference setting value is 5-15 DEG C.
Further, in step (4), cooling water pump connects a cooling water pump frequency converter, when cooling water pump control module
The control switch of cooling water pump is opened, cooling water pump frequency converter is become larger by low frequency gradually up to power frequency, then further according to cooling water
For the frequency of the temperature difference setting value adjustment cooling water pump frequency converter of return water, until cooling water is cold for the practical temperature difference approach of return water
But the temperature difference setting value of water loop；If it is more cooling water pump combined operatings, then when cooling water is for the practical temperature difference of return water
Less than temperature difference setting value but separate unit cooling water pump is run when not being able to satisfy regulatory demand, the operation that control unit passes through arithmetic element
As a result, opening new operation combination；Temperature difference setting value is 5-15 DEG C.
Further, control unit control water cooler control module first opens electric butterfly valve, normally-open in electric butterfly valve
Afterwards, control unit control chilled water pump control module, cooling water pump control module, cooling tower control module successively open cooling tower
Control switch, the control switch of the control switch of chilled water pump and cooling water pump, when cooling tower, chilled water pump and cooling water pump
After normally-open, control unit controls the control switch that water cooler control module opens water cooler；Close control system
When, control module first controls water cooler control module, cooling water pump control module, chilled water pump control module, cooling tower control
Molding block successively closes the control switch of water cooler, the control switch of cooling water pump, the control switch of chilled water pump, cooling tower
Control switch, after water cooler, cooling water pump, chilled water pump, cooling tower equal normal switching-off, control unit controls cooling-water machine
Group control module closes electric butterfly valve.
Compared with the prior art, the advantages of the present invention are as follows: the efficiency Intelligent Optimal control system of central air-conditioning of the present invention
Real-time monitoring the big subitem electrical equipment electricity consumption data of central air conditioner system five can be tracked for a long time, such as: electricity consumption, electrical power, electricity
Rate of load condensate, supply and return water temperature, water flow, semen donors, the cooling-water machine instant coefficient of performance, divide cooling-water machine operation average behavior coefficient
Immediately efficiency, the instant efficiency of system and system be averaged the core datas such as efficiency, and by these data with the mark of country or the world
Ruler (i.e. setting value) goes to compare, and evaluates the efficiency grade of each loop of central air conditioner system, further according to these big datas, formulates certainly
Dynamic control program, so that the operation of central air conditioner system be made to reach a satisfied energy-saving effect.Central air-conditioning of the present invention
Efficiency Intelligent Optimal control system can automatically track the efficiency of the evaluation big control system of central air conditioner system five, and according to these
Evaluation result selects suitable control strategy, is optimal the efficiency of central air conditioner system.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the module frame chart of the embodiment of the present invention；
Fig. 2 is the logic control schematic diagram of control unit of the embodiment of the present invention.
Specific embodiment
Clear, complete description is carried out below with reference to technical solution of the attached drawing to various embodiments of the present invention, it is clear that is retouched
The embodiment stated is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Those of ordinary skill in the art's obtained all other embodiment without making creative work belongs to this
Invent protected range.
The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of efficiency Intelligent Optimal control system of central air-conditioning, comprising: acquisition unit, monitoring unit,
Arithmetic element, control unit and display unit；Acquisition unit is for acquiring water cooler cooling cycle system, chilled water cyclic system
System, cooling water recirculation system, the data parameters of the cooling tower circulatory system and the air conditioning terminal circulatory system；Acquisition unit includes electric energy
One or more of table, power transducer, flow transmitter, temperature transmitter, humidity transmitter, for monitoring central air-conditioning
Temperature, power, power consumption, cooling capacity, humidity, efficiency and indoor and outdoor surroundings parameter；Monitoring unit is connected with acquisition unit, uses
In monitoring acquisition unit, to obtain monitoring result；Arithmetic element is connect with monitoring unit, the number for being monitored according to monitoring unit
According to calculate entire central air conditioner system and water cooler cooling cycle system, freezing water circulation system, cooling water recirculation system,
The rate of load condensate and efficiency of the cooling tower circulatory system and the air conditioning terminal circulatory system；Control unit is connected with arithmetic element, is used for
Judge whether operation result meets default Rule of judgment, and when meeting default Rule of judgment, using with default Rule of judgment phase
Corresponding control strategy control water cooler cooling cycle system, freezing water circulation system, cooling water recirculation system and cooling tower
The operation of the circulatory system；Display unit connects control unit, for showing that entire central air conditioner system and water cooler refrigeration are followed
Loop system, the real-time fortune for freezing water circulation system, cooling water recirculation system, the air conditioning terminal circulatory system and the cooling tower circulatory system
Row state, rate of load condensate, efficiency and efficiency grade.
Acquisition unit include water cooler cooling cycle system acquisition unit, water dispenser group cooling cycle system acquisition unit,
Freeze water circulation system acquisition unit, cooling water recirculation system acquisition unit, air conditioning terminal circulatory system acquisition unit and cooling
Tower circulatory system acquisition unit.Water cooler cooling cycle system acquisition unit includes power transducer, electric energy meter, flow pick-up
Device, temperature transmitter and thermal energy transmitter；Power transducer is used to acquire the function of water cooler cooling cycle system refrigeration unit
Rate；Electric energy meter is used to acquire the power consumption of water cooler cooling cycle system refrigeration unit；Flow transmitter is for acquiring cold water
The water flow of unit cooling cycle system refrigeration unit；Temperature transmitter is for acquiring water cooler cooling cycle system refrigeration machine
The inlet and outlet temperature of group；Thermal energy transmitter is used to acquire the refrigerating capacity of water cooler cooling cycle system.Freeze water circulation system
Acquisition unit includes power transducer and electric energy meter；Power transducer is used to acquire the power of freezing water circulation system water pump；Electricity
Energy table is used to acquire the power consumption of freezing water circulation system water pump.Cooling water recirculation system acquisition unit include power transducer and
Electric energy meter；Power transducer is used to acquire the power of cooling water recirculation system water pump；Electric energy meter is for acquiring cooling water cyclic system
The power consumption of system water pump.Air conditioning terminal circulatory system acquisition unit includes power transducer and electric energy meter；Power transducer is used for
Acquire the power of air conditioning terminal circulatory system blower；Electric energy meter is used to acquire the power consumption of air conditioning terminal circulatory system blower.It is cold
But tower circulatory system acquisition unit includes power transducer, electric energy meter, temperature transmitter and humidity transmitter；Power transducer is used
In the power of acquisition cooling tower circulatory system blower；Electric energy meter is used to acquire the power consumption of cooling tower circulatory system blower；Temperature
Transmitter is used to acquire the temperature of cooling tower circulatory system environment；Humidity transmitter is for acquiring cooling tower circulatory system environment
Humidity.
Monitoring unit is used to monitor acquisition unit and the data that acquisition unit acquires is transferred to arithmetic element, arithmetic element
Go out entire central air conditioner system and water cooler cooling cycle system, chilled water circulation according to the data operation that monitoring unit monitors
System, cooling water recirculation system, the rate of load condensate and efficiency of the air conditioning terminal circulatory system and the grade cooling tower circulatory system are simultaneously transferred to
Control unit；Control unit judges whether operation result meets default Rule of judgment, and when meeting default Rule of judgment, uses
Control strategy control water cooler cooling cycle system corresponding with default Rule of judgment, freezing water circulation system, cooling water
The operation of the circulatory system, the air conditioning terminal circulatory system and the cooling tower circulatory system；Display unit connects control unit, for showing
Entire central air conditioner system and water cooler cooling cycle system, freezing water circulation system, cooling water recirculation system, air conditioning terminal
The real-time running state of the circulatory system and the grade cooling tower circulatory system, rate of load condensate and efficiency grade.
Preferably, further include receiving unit, be connected with control unit, the control strategy inputted for receiving user, and/
Or the default Rule of judgment for receiving user's input.
Preferably, control unit includes water cooler control module, water cooler correction module, chilled water pump control mould
Block, chilled water pump correction module, cooling water pump control module, cooling water pump correction module, cooling tower control module, cooling tower entangle
Mismatch block and team control module；Water cooler control module connects water cooler, for controlling water cooler cooling water and chilled water
The opening and closing of the electric butterfly valve and unit itself of water supplying pipe, water cooler correction module is for feeding back the real-time of water cooler
State is to control unit；Chilled water pump control module connects the control switch of chilled water pump, opens for controlling chilled water pump control
The opening and closing of pass, chilled water pump correction module are used to feed back the real-time status of chilled water pump to control unit；Cooling water pump
Control module connects the control switch of cooling water pump, for controlling the opening and closing of refrigeration machine controlling switch, cooling water pump
Correction module is used to feed back the real-time status of cooling water pump to control unit；The control of cooling tower control module connection cooling tower is opened
It closes, the opening and closing of the inlet valve for controlling cooling water pump controlling switch and cooling tower, cooling tower correction module is for anti-
The real-time status of cooling tower and inlet valve is presented to control unit；Control unit is according to the real-time load rate of arithmetic element operation
Control team control module adds machine or subtracts machine.
Preferably, water cooler cooling cycle system includes refrigeration controler, and refrigeration controler is for adjusting water cooler
Water outlet temperature setting value, water cooler control module connect refrigeration controler, for by water cooler control module it is automatic
Adjust water outlet temperature setting value.
The air conditioning terminal circulatory system includes chilled water for return pipe control system；Chilled water is for return pipe control system water route
Control valve, when 80% chilled water is respectively less than 100% aperture for the waterway controlling valve aperture of return pipe control system, cooling-water machine
The water outlet temperature setting value of water cooler is improved 1 DEG C by group control module control refrigeration controler, and is stablized 20 minutes；If 80%
Chilled water for return pipe control system waterway controlling valve aperture less than 100%, water cooler control module control cooling-water machine
The water outlet temperature setting value of group improves 1 DEG C, and such logic is carried out；Conversely, being more than that 20% fan coil electrically operated valve is opened
Degree is 100%, and water cooler control module, which controls refrigeration controler, reduces by 1 DEG C for the water outlet temperature setting value of water cooler, directly
To returning back to initial set value；So implement logic execution.
A kind of control method of such as efficiency Intelligent Optimal control system of above-mentioned central air-conditioning, comprising the following steps:
(1) control unit water cooler control module control water cooler cooling water and chilled water inlet and outlet pipes it is electronic
Butterfly valve, if electric butterfly valve is not normally-open, water cooler correction module is sounded an alarm, and stops opening electric butterfly valve, and by mistake
Information is sent to control unit；If it is more water cooler combined operatings, the control of water cooler control module opens next
The electric butterfly valve of water cooler, and repeat the operation logic；
(2) after the electric butterfly valve of water cooler is normally-open, the cooling tower control module of control unit controls cooling tower control
The inlet valve of system switch and cooling tower is opened, if cooling tower and inlet valve be not normally-open, cooling tower correction module hair
Alarm out stops opening cooling water pump controlling switch and closes inlet valve；If it is more cooling tower combined operatings, cooling tower control
The control switch and inlet valve of next cooling tower are opened in the control of molding block, and repeat the operation logic；
(3) after cooling tower is normally-open, the control switch of the chilled water pump control module control chilled water pump of control unit
It opens, if chilled water pump is not normally-open, chilled water pump correction module is sounded an alarm, and stops opening chilled water pump control switch；
If it is more chilled water pump combined operatings, chilled water pump control module controls next chilled water pump and opens, and repeats the fortune
Row logic；
(4) after chilled water pump is normally-open, the control of the cooling water pump control module control cooling water pump of control unit is opened
It closes and opens, if cooling water pump is not normally-open, cooling water pump correction module is sounded an alarm, and is stopped unlatching cooling water pump control and is opened
It closes；If it is more cooling water pump combined operatings, cooling water pump control module controls next cooling water pump and opens, and repeating should
Operation logic；
(5) after cooling water pump is normally-open, the water cooler control module control water cooler of control unit is opened, if cold
Water dispenser group is not normally-open, and water cooler correction module stops opening water cooler, and error message is sent to control unit
And it alarms；If it is more water cooler combined operatings, then water cooler control module controls next water cooler and opens, and
Repeat the operation logic.
Preferably, in step (2), cooling tower control module connects a fan frequency converter, passes through fan frequency converter control
The cooling blower of cooling tower processed；When cooling tower control module opens cooling water pump controlling switch and inlet valve, fan frequency converter by
Low frequency becomes larger gradually until power frequency, then adjusts further according to cooling water leaving water temperature with the temperature difference setting value of the wet-bulb temperature of air
Fan frequency converter frequency, until cooling water leaving water temperature approaches the cooling tower circulatory system with the practical temperature difference of the wet-bulb temperature of air
Temperature difference setting value；If it is more cooling tower combined operatings, then when cooling water leaving water temperature is with the temperature of the wet-bulb temperature of air
Difference is less than temperature difference setting value but separate unit cooling tower is run when not being able to satisfy regulatory demand, the operation that control unit passes through arithmetic element
As a result, opening new operation combination；Temperature difference setting value is 5-15 DEG C.
Preferably, in step (3), chilled water pump control module connects a chilled water pump frequency converter, and chilled water pump becomes
The flow of frequency device control chilled water pump；When chilled water pump control module opens the control switch of chilled water pump, chilled water pump frequency conversion
Device is become larger gradually by low frequency until power frequency, then the temperature difference setting value further according to chilled water for return water adjusts chilled water pump frequency converter
Frequency, until chilled water for return water practical temperature difference approach chilled water circuit temperature difference setting value；It is freezed if it is more
Water pump combined operating, then when chilled water is less than temperature difference setting value for the practical temperature difference of return water but the operation of separate unit chilled water pump cannot
When meeting regulatory demand, control unit opens new operation combination by the operation result of arithmetic element；Temperature difference setting value is 5-
15℃。
Preferably, in step (4), cooling water pump connects a cooling water pump frequency converter, cooling water pump Frequency Converter Control
The flow of cooling water pump；When cooling water pump control module opens the control switch of cooling water pump, cooling water pump frequency converter is by low frequency
Gradually become larger up to power frequency, then adjust the frequency of cooling water pump frequency converter for the temperature difference setting value of return water further according to cooling water,
Until temperature difference setting value of the cooling water for the practical temperature difference approach chilled(cooling) water return (CWR) of return water；Combine if it is more cooling water pumps
Operation, then when cooling water is less than temperature difference setting value for the practical temperature difference of return water but the operation of separate unit cooling water pump is not able to satisfy adjusting
When demand, control unit opens new operation combination by the operation result of arithmetic element；Temperature difference setting value is 5-15 DEG C.
Preferably, control unit control water cooler control module first opens electric butterfly valve, normally-open in electric butterfly valve
Afterwards, control unit control chilled water pump control module, cooling water pump control module, cooling tower control module successively open cooling tower
Control switch, the control switch of the control switch of chilled water pump and cooling water pump, when cooling tower, chilled water pump and cooling water pump
After normally-open, control unit controls the control switch that water cooler control module opens water cooler；Close control system
When, control module first controls water cooler control module, cooling water pump control module, chilled water pump control module, cooling tower control
Molding block successively closes the control switch of water cooler, the control switch of cooling water pump, the control switch of chilled water pump, cooling tower
Control switch, after water cooler, cooling water pump, chilled water pump, cooling tower equal normal switching-off, control unit controls cooling-water machine
Group control module closes electric butterfly valve.
There are the operations of efficiency highest to combine for the water cooler operation of more operations, and this combination passes through the energy of the central air-conditioning
Effect obtains after the Intelligent Optimal control system operation some time；The water cooler of more operations adds machine or subtracts machine to be met according to load
And efficiency comes first carries out.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form, appoint
What those skilled in the art, without departing from the scope of the present invention, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, but anything that does not depart from the technical scheme of the invention content,
Any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention still fall within this
In the range of inventive technique scheme.
Claims (5)
1. a kind of control method of the efficiency Intelligent Optimal control system of central air-conditioning, which is characterized in that
The efficiency Intelligent Optimal control system of the central air-conditioning includes: acquisition unit, monitoring unit, arithmetic element, control list
Member and display unit；The acquisition unit is followed for acquiring water cooler cooling cycle system, freezing water circulation system, cooling water
The data parameters of loop system, the cooling tower circulatory system and the air conditioning terminal circulatory system；The acquisition unit includes electric energy meter, power
One or more of transmitter, flow transmitter, temperature transmitter, humidity transmitter, for monitor central air-conditioning temperature,
Power, power consumption, cooling capacity, humidity, efficiency and indoor and outdoor surroundings parameter；The monitoring unit is connected with the acquisition unit,
For monitoring the acquisition unit, to obtain monitoring result；The arithmetic element is connect with the monitoring unit, for according to institute
The data operation for stating monitoring unit monitoring goes out entire central air conditioner system and water cooler cooling cycle system, chilled water cyclic system
System, cooling water recirculation system, the rate of load condensate and efficiency of the cooling tower circulatory system and the air conditioning terminal circulatory system；Described control unit
It is connected with the arithmetic element, for judging whether the operation result meets default Rule of judgment, and it is described pre- meeting
If when Rule of judgment, using control strategy control water cooler cooling cycle system corresponding with the default Rule of judgment,
Freeze the operation of water circulation system, cooling water recirculation system and the cooling tower circulatory system；The display unit connects the control
Unit, for showing entire central air conditioner system and water cooler cooling cycle system, freezing water circulation system, cooling water circulation
System, the real-time running state of the air conditioning terminal circulatory system and the cooling tower circulatory system, rate of load condensate, efficiency and efficiency grade；
Described control unit includes water cooler control module, water cooler correction module, chilled water pump control module, chilled water
Pump correction module, cooling water pump control module, cooling water pump correction module, cooling tower control module, cooling tower correction module and
Team control module；The water cooler control module connects water cooler, supplies water for controlling water cooler cooling water and chilled water
The opening and closing of the electric butterfly valve and unit itself of pipe, the water cooler correction module for feed back the water cooler and
The real-time status of electric butterfly valve is to described control unit；The control switch of the chilled water pump control module connection chilled water pump,
For controlling the opening and closing of chilled water pump control switch, the chilled water pump correction module is used to feed back the reality of chilled water pump
When state to described control unit；The control switch of the cooling water pump control module connection cooling water pump, for controlling cooling
The opening and closing of water pump control switch, the cooling water pump correction module are used to feed back the real-time status of cooling water pump to described
Control unit；The cooling tower control module connects the control switch of the cooling tower, for control cooling water pump controlling switch and
The opening and closing of the inlet valve of cooling tower, the cooling tower correction module are used to feed back the reality of cooling tower and inlet valve
When state to described control unit；Described control unit controls the team control according to the real-time load rate of the arithmetic element operation
Module adds machine or subtracts machine；
Control method the following steps are included:
(1) the electronic butterfly of water cooler control module control the water cooler cooling water and chilled water inlet and outlet pipes of control unit
Valve, if electric butterfly valve is not normally-open, the water cooler correction module is sounded an alarm, and stops opening electric butterfly valve, and will be wrong
False information is sent to control unit；If it is more water cooler combined operatings, the control of water cooler control module is opened next
The electric butterfly valve of platform water cooler, and repeat the operation logic；
(2) after the electric butterfly valve of water cooler is normally-open, the cooling tower control module of described control unit controls cooling tower control
The inlet valve of system switch and cooling tower is opened, if cooling tower and inlet valve be not normally-open, cooling tower correction module hair
Alarm out stops opening cooling water pump controlling switch and closes inlet valve；If it is more cooling tower combined operatings, cooling tower control
The control switch and inlet valve of next cooling tower are opened in the control of molding block, and repeat the operation logic；
(3) after cooling tower is normally-open, the control switch of the chilled water pump control module control chilled water pump of described control unit
It opens, if chilled water pump is not normally-open, chilled water pump correction module is sounded an alarm, and stops opening chilled water pump control switch；
If it is more chilled water pump combined operatings, the chilled water pump control module controls next chilled water pump and opens, and repeats
The operation logic；
(4) after chilled water pump is normally-open, the control of the cooling water pump control module control cooling water pump of described control unit is opened
It closes and opens, if cooling water pump is not normally-open, cooling water pump correction module is sounded an alarm, and is stopped unlatching cooling water pump control and is opened
It closes；If it is more cooling water pump combined operatings, the cooling water pump control module controls next cooling water pump and opens, and lays equal stress on
The multiple operation logic；
(5) after cooling water pump is normally-open, the water cooler control module control water cooler of described control unit is opened, if cold
Water dispenser group is not normally-open, and water cooler correction module stops opening water cooler, and error message is sent to control unit
And it alarms；If it is more water cooler combined operatings, then water cooler control module controls next water cooler and opens, and
Repeat the operation logic.
2. the control method of the efficiency Intelligent Optimal control system of central air-conditioning as described in claim 1, it is characterised in that:
In step (2), the cooling tower control module connects a fan frequency converter, when cooling tower control module opens cooling tower control
After switch and inlet valve, fan frequency converter is become larger by low frequency gradually until power frequency, then further according to cooling water leaving water temperature with
The temperature difference setting value of the wet-bulb temperature of air adjusts the fan frequency converter frequency, until cooling water leaving water temperature is with the wet of air
The temperature difference setting value of the practical temperature difference approach cooling tower circulatory system of ball temperature；If it is more cooling tower combined operatings, then when
Cooling water leaving water temperature is less than temperature difference setting value with the temperature difference of the wet-bulb temperature of air but the operation of separate unit cooling tower is not able to satisfy tune
When section demand, control unit opens new operation combination by the operation result of arithmetic element；Temperature difference setting value is 5-15 DEG C.
3. the control method of the efficiency Intelligent Optimal control system of central air-conditioning as described in claim 1, it is characterised in that:
In step (3), the chilled water pump control module connects a chilled water pump frequency converter, when the chilled water pump control module is opened
The control switch of chilled water pump is opened, chilled water pump frequency converter is become larger gradually by low frequency until power frequency, then supplies further according to chilled water
The frequency of the temperature difference setting value adjustment chilled water pump frequency converter of return water, until chilled water approaches freezing for the practical temperature difference of return water
The temperature difference setting value of water loop；It is if it is more chilled water pump combined operatings, then small for the practical temperature difference of return water when chilled water
In temperature difference setting value but when the operation of separate unit chilled water pump is not able to satisfy regulatory demand, control unit passes through the operation knot of arithmetic element
Fruit opens new operation combination；Temperature difference setting value is 5-15 DEG C.
4. the control method of the efficiency Intelligent Optimal control system of central air-conditioning as described in claim 1, it is characterised in that:
In step (4), the cooling water pump connects a cooling water pump frequency converter, when the cooling water pump control module opens cooling water
The control switch of pump, cooling water pump frequency converter are become larger by low frequency gradually up to power frequency, then further according to cooling water for the temperature of return water
The frequency of poor setting value adjustment cooling water pump frequency converter, until cooling water approaches chilled(cooling) water return (CWR) for the practical temperature difference of return water
Temperature difference setting value；If it is more cooling water pump combined operatings, then when cooling water is set for the practical temperature difference of return water less than the temperature difference
The definite value but operation of separate unit cooling water pump is not when being able to satisfy regulatory demand, control unit is opened by the operation result of arithmetic element
New operation combination；Temperature difference setting value is 5-15 DEG C.
5. the control method of the efficiency Intelligent Optimal control system of central air-conditioning as described in claim 1, it is characterised in that: institute
It states control unit control water cooler control module and first opens electric butterfly valve, after electric butterfly valve is normally-open, the control is single
The control that member control chilled water pump control module, cooling water pump control module, cooling tower control module successively open cooling tower is opened
It closes, the control switch of the control switch of chilled water pump and cooling water pump, when cooling tower, chilled water pump and cooling water pump are just normally opened
Qi Hou, described control unit control water cooler control module open the control switch of the water cooler；Close control system
When, the control module first controls water cooler control module, cooling water pump control module, chilled water pump control module, cooling
Tower control module successively closes the control switch of the water cooler, control switch of cooling water pump, the control switch of chilled water pump, cold
But the control switch of tower, after water cooler, cooling water pump, chilled water pump, cooling tower equal normal switching-off, described control unit control
Chilled water unit allocation module closes electric butterfly valve.
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