CN105546745A - Group control method and device for central air conditioner main machine unit - Google Patents
Group control method and device for central air conditioner main machine unit Download PDFInfo
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- CN105546745A CN105546745A CN201511025008.4A CN201511025008A CN105546745A CN 105546745 A CN105546745 A CN 105546745A CN 201511025008 A CN201511025008 A CN 201511025008A CN 105546745 A CN105546745 A CN 105546745A
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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
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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
- F24F2110/00—Control inputs relating to air properties
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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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention is applicable to the field of energy saving of central air conditioners and provides a group control method for a central air conditioner main machine unit so as to solve the problem that air conditioner units cannot operate in an energy-efficient manner all the time due to the fact that air conditioner main machines cannot be adjusted timely and accurately in an existing manual manner. The method comprises steps as follows: group control parameters of the central air conditioner main machine unit are acquired; when the outgoing water temperature of the main machine unit exceeds a preset temperature value or the actual refrigerating capacity of the main machine unit exceeds a maximum preset refrigerating capacity value, a main machine with the main machine state being the available state is started; when the outgoing water temperature of the main machine unit is lower than the preset temperature value and the actual refrigerating capacity of the main machine unit is lower than the maximum preset refrigerating capacity value, a main machine with the main machine state being the stoppable state is stopped. With the adoption of the group control method, air conditioner main machines are increased or decreased automatically according to the on-site load demand of the central air conditioner main machine unit, and automatic matching control on loads is realized, so that the energy-efficient operation effect of a central air conditioner is realized.
Description
Technical field
The present invention relates to central air-conditioning energy field, particularly relate to a kind of central air conditioner main machine machine group control method and device.
Background technology
In central air conditioner system, the capacity of refrigeration host computer unit, chilled water pump, cooling water pump, blower fan of cooling tower and end-equipment is selected according to building maximum planned load, and leave the surplus of 10% to 15%, make at all seasons, system works for a long time under fixing maximum flow of water amount and maximum quantity of wind.
But, due to season, round the clock with the change of customer charge, the load of air-conditioning reality is low more than design (calculated) load within the overwhelming majority time.Wherein, in 1 year, the hours of operation of load factor below 50% accounts for more than 50% of whole running time.When air conditioner load changes, need exerting oneself of corresponding conditioning equipment, and normally adopt manual type to judge the situation of change of air conditioner load at present, and manually add and subtract main frame and the runing adjustment to auxiliary equipment according to load variations.The adjustment of manual type is often not prompt enough and accurate, and air-conditioner set can not be made to run in a kind of energy-efficient mode all the time.
Summary of the invention
The object of the present invention is to provide a kind of central air conditioner main machine machine group control method and device, be intended to solve the adjustment of existing manual type to air-conditioner host accurately not prompt enough, air-conditioner set cannot be made all the time with the problem that a kind of energy-efficient mode is run.
First aspect present invention, provides a kind of central air conditioner main machine machine group control method, comprising:
Obtain the team control parameter of central air conditioner main machine unit, described team control parameter comprises: main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit and Host Status;
When described main frame unit leaving water temperature exceedes temperature preset value or the actual refrigerating capacity of described main frame unit exceedes maximum cooling capacity preset value, starting described Host Status is can the main frame of initiate mode;
When described main frame unit leaving water temperature is lower than described temperature preset value, and the actual refrigerating capacity of described main frame unit lower than described maximum cooling capacity preset value time, stop described Host Status to be can the main frame of closed condition.
Second aspect present invention, provides a kind of central air conditioner main machine unit group control device, comprising:
Parameter acquisition module, for obtaining the team control parameter of central air conditioner main machine unit, described team control parameter comprises: main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit and Host Status;
Judge module, for judging whether main frame unit leaving water temperature exceedes temperature preset value, and whether the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value;
Start module, for judge when described judge module described main frame unit leaving water temperature exceed temperature preset value or the actual refrigerating capacity of described main frame unit exceed maximum cooling capacity preset value time, starting described Host Status is can the main frame of initiate mode;
Stopping modular, for judging that described main frame unit leaving water temperature is lower than described temperature preset value when described judge module, and the actual refrigerating capacity of described main frame unit lower than described maximum cooling capacity preset value time, stop described Host Status to be can the main frame of closed condition.
The beneficial effect that the present invention compared with prior art exists is: technical scheme provided by the invention is for the main frame unit of central air-conditioning and auxiliary device, according to on-the-spot workload demand, automatic plus-minus main frame, the Auto-matching realizing load controls, i.e. main frame unit team control, thus reach the energy-efficient operational effect of central air-conditioning.
Accompanying drawing explanation
Fig. 1 is the flow chart of the central air conditioner main machine machine group control method that the embodiment of the present invention one provides;
Fig. 2 is the efficiency curve synoptic diagram of two kinds of different air conditioner refrigerating units in the central air conditioner main machine machine group control method that provides of the embodiment of the present invention one;
Fig. 3 is the flow chart of the central air conditioner main machine machine group control method that the embodiment of the present invention two provides;
Fig. 4 is the structural representation of the central air conditioner main machine unit group control device that the embodiment of the present invention three provides;
Fig. 5 is the structural representation of the central air conditioner main machine unit group control device that the embodiment of the present invention four provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with concrete accompanying drawing, realization of the present invention is described in detail.
Embodiment one:
Fig. 1 shows the flow process of the central air conditioner main machine machine group control method that the embodiment of the present invention one provides, and the method can be applicable to control device, and to realize regulating the work of central air conditioner main machine unit, wherein this control device can be such as computer equipment.The central air conditioner main machine machine group control method of Fig. 1 example specifically comprises step S101 to S103, and details are as follows:
The team control parameter of S101, acquisition central air conditioner main machine unit, team control parameter comprises: main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit and Host Status.
Control device obtains the team control parameter of central air conditioner main machine unit, and this team control parameter can be, but not limited to comprise main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit and Host Status.
Particularly, main frame unit leaving water temperature and house steward's chilled water leaving water temperature, represent the real-time detected value of house steward's chilled water leaving water temperature; Namely the actual refrigerating capacity of main frame unit runs the actual cold total value of main frame, represents the refrigerating capacity total value being in the main frame actual measurement of running status; Host Status and Host Status mark, comprising can initiate mode and can closed condition, the main frame of initiate mode can represent current and closed and the main frame can enabled at any time, the main frame of closed condition can represent current and enabled and the main frame can closed at any time.
S102, when main frame unit leaving water temperature exceedes temperature preset value or the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value, starting Host Status is can the main frame of initiate mode.
Particularly, the computing formula of temperature preset value is:
Temperature preset value=main frame water outlet temperature setting value+main frame leaving water temperature deviation settings
Wherein, main frame water outlet temperature setting value refers to the mean value of the water outlet temperature setting value of each operation main frame, and every platform main frame water outlet temperature setting value can by User Defined, and default value is 7 DEG C; The arranged scope of main frame leaving water temperature deviation settings is 0.5 DEG C ~ 1 DEG C, and default value is 1 DEG C.
Particularly, the computing formula of maximum cooling capacity preset value is:
Wherein, N is the quantity running main frame, represents the main frame number of units being in running status in central air conditioner main machine unit; The effect of 95% reserves certain surplus to maximum cooling capacity, avoids main frame overload operation.
Further, the computing formula of main frame maximum cooling capacity is:
Wherein, load on host computers percentage represents the percentage load of the main frame being in running status; Main frame prediction cold and load on host computers limits value are preset parameter, are described in detail as follows:
Main frame prediction cold is that control device predicts the main frame prediction refrigerating capacity obtained by load prediction module.
Particularly, load prediction module is by setting up load forecasting model to predict the load of " future time instance " system.Load forecasting model is by front 3 time points nearest with current time, and the real-time refrigerating capacity of main frame of a few days ago same time point of current time, calculate refrigerating capacity coefficient, again in conjunction with the real-time refrigerating capacity of main frame of the point of same time a few days ago 12 time points backward of current time, dope the main frame prediction refrigerating capacity of current time.
Load capacity when load on host computers limits value represents that main frame reaches most high energy efficiency ratio.
Particularly, Energy Efficiency Ratio is under declared working condition and rated condition, the ratio of actual refrigerating capacity and actual input power during operation of air conditioner, i.e. performance parameter (CoefficientofPerformance, COP).This is a composite target, reflects the refrigerating capacity that unit input power converts in operation of air conditioner process.COP is larger, and the electric energy saved when refrigerating capacity is equal is more, and efficiency is higher.
Fig. 2 shows the efficiency curve of two kinds of different air conditioner refrigerating units.Wherein, abscissa represents load factor, and ordinate represents the ratio of input power and refrigerating capacity, i.e. the inverse of COP.Can find out, when efficiency curve arrives minimum point, COP value is maximum, and now reaching most high energy efficiency ratio, is best efficiency point.
From Fig. 2, the contrast of two kinds of efficiency curves is known, and the peak efficiency value of the different refrigeration unit of air-conditioning is different, and the Energy Efficiency Ratio in the efficiency curve shown in the left figure of Fig. 2 when load reaches 80% is maximum; And Energy Efficiency Ratio in the efficiency curve shown in the right figure of Fig. 2 when load reaches 70% is maximum.Therefore need the efficiency curve obtaining each air conditioner refrigerating unit in advance, draw load capacity when main frame reaches most high energy efficiency ratio, i.e. load on host computers limits value.
Simultaneously, the best efficiency point of air conditioner refrigerating unit also can change with the change of work condition environment in time, therefore need periodic detection, upgrade efficiency curve and load on host computers limits value, thus ensure that integrally cooling unit energy runs under the highest comprehensive host C OP state.
Further, when main frame unit leaving water temperature exceedes temperature preset value or the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value, illustrate that the load of current air-conditioning is excessive, main frame share loads can be increased.According to Host Status mark, judging whether to be in can the main frame of initiate mode, if had, then starts that be in can the main frame of initiate mode.
S103, when main frame unit leaving water temperature is lower than temperature preset value, and the actual refrigerating capacity of main frame unit lower than maximum cooling capacity preset value time, stop Host Status to be can the main frame of closed condition.
Particularly, when main frame unit leaving water temperature is lower than temperature preset value, and the actual refrigerating capacity of main frame unit lower than maximum cooling capacity preset value time, illustrate that current air conditioner load has surplus, main frame can be stopped reducing the waste of unnecessary load.According to Host Status mark, judging whether to be in can the main frame of closed condition, if had, then stopping being in can the main frame of closed condition.
In the present embodiment, by determining workload demand to the judgement of temperature and refrigerating capacity, and automatically add and subtract main frame according to load condition, the Auto-matching realizing load controls, thus reaches the energy-efficient operational effect of central air-conditioning.
Embodiment two:
Fig. 3 shows the flow process of the central air conditioner main machine machine group control method that the embodiment of the present invention two provides, and the method can be applicable to control device, and to realize regulating the work of central air conditioner main machine unit, wherein this control device can be such as computer equipment.The central air conditioner main machine machine group control method of Fig. 3 example specifically comprises step S201 to S211, and details are as follows:
The team control parameter of S201, acquisition central air conditioner main machine unit, team control parameter comprises: the load factor of main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit, Host Status, operation main frame, the rate of temperature fall of main frame, the quantity running main frame, operation main frame overall refrigerating effect remaining sum.
Control device obtains the team control parameter of central air conditioner main machine unit, and this team control parameter can be, but not limited to the load factor, the rate of temperature fall of main frame, the quantity running main frame, the operation main frame overall refrigerating effect remaining sum that comprise main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit, Host Status, operation main frame.
It should be noted that, main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit are identical with the team control parameter that the step S101 of embodiment one obtains with Host Status, specifically can the step S101 of reference example one, repeat no more herein.Other team control parameters obtained are needed to be described in detail as follows:
Run load factor and the load on host computers percentage of main frame, represent the percentage load being in the main frame of running status.
The rate of temperature fall of main frame is main frame chilled water out temperature rate of change per minute, and unit is DEG C/min, and main frame chilled water out temperature is the real-time detected value of main frame chilled water out temperature.
The quantity running main frame represents the main frame number of units being in running status in central air conditioner main machine unit.
The computing formula running main frame overall refrigerating effect remaining sum is:
Wherein, N is the quantity running main frame; The effect of 91% reserves certain surplus to maximum cooling capacity, avoids main frame overload operation; Namely the actual refrigerating capacity of main frame unit runs the actual cold total value of main frame, represents the refrigerating capacity total value of the main frame actual measurement of running status.
S202, judge whether main frame unit leaving water temperature exceedes temperature preset value or whether the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value.
Judge whether main frame unit leaving water temperature exceedes temperature preset value or whether the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value, if main frame unit leaving water temperature exceedes temperature preset value or the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value, then perform step S203, otherwise perform step S207.
It should be noted that, temperature preset value is identical with maximum cooling capacity preset value with the temperature preset value in the step S102 of embodiment one with maximum cooling capacity preset value, specifically can the step S102 of reference example one, repeats no more herein.
Particularly, when main frame unit leaving water temperature exceedes temperature preset value or the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value, illustrate that the load of current air-conditioning is excessive, main frame share loads can be increased, continue to perform step S203, carry out further accurately judging to startup host approach; Otherwise illustrate that current air conditioner load has surplus, main frame can be stopped reducing the waste of unnecessary load, continue to perform step S207, carry out further accurately judging to stopping host approach.
S203, judge that whether team control parameter meets simultaneously and start main frame condition e1 below) to e3):
E1) load factor that every platform runs main frame exceedes preset baseline load rate;
E2) every platform runs the rate of temperature fall of main frame lower than temperature decrease rate preset value;
E3) All hosts is all in stable state.
Main frame condition e1 is started when team control parameter meets simultaneously) to e3) time, perform step S204, otherwise perform step S212.
Particularly, the computing formula of preset baseline load rate is:
Preset baseline load rate=load on host computers limits value-main frame high capacity judgment value
Wherein, load capacity when load on host computers limits value represents that main frame reaches most high energy efficiency ratio, identical with the load on host computers limits value in the step S102 of embodiment one, specifically can the step S102 of reference example one, repeat no more herein; Main frame high capacity judgment value represents the judgement surplus to load on host computers limits value, when judging whether the main frame actual negative carrying capacity run exceedes the load capacity of most high energy efficiency ratio, judge that thresholding can be set to the difference that load on host computers limits value deducts main frame high capacity judgment value, main frame high capacity judgment value can by User Defined, and default value is 5%.
Temperature decrease rate preset value is rate of temperature fall settings, represents the rate of change that chilled water leaving water temperature is per minute, can by User Defined, and default value is 0.3 DEG C/min.
The condition that main frame is in stable state is: host-initiated or the stabilization time after stopping are greater than settings stabilization time, and wherein stabilization time, settings were host-initiated or the stabilization time after stopping, can by User Defined, and default value is 20 minutes.
Particularly, the load factor running main frame when every platform exceedes preset baseline load rate, namely starts main frame condition e1) when setting up, illustrates that the main frame actual negative carrying capacity run exceedes the load capacity of most high energy efficiency ratio, need to consider that increase main frame carrys out share loads.
S204, judge that team control parameter meets the duration starting main frame condition and whether reaches time preset value.
When the duration that team control parameter meets startup main frame condition reaches time preset value, perform step S205, otherwise perform step S212.
Particularly, time preset value is condition duration settings, represents the duration settings meeting the Rule of judgment starting or stop main frame, can by User Defined, and default value is 10 minutes.
Start main frame condition e1 when meeting in step S203 simultaneously) to e3) greater than condition duration, settings duration time, continue to perform step S205.
S205, having judged whether that main frame is in can initiate mode.
When have main frame be in can initiate mode time, perform step S206, otherwise perform step S212.
Particularly, according to Host Status mark, when have Host Status be can the main frame of initiate mode time, continue to perform step S206.
S206, start that be in can the main frame of initiate mode.
S207, judge that whether team control parameter meets simultaneously and stop main frame condition f1 below) to f3):
F1) quantity of main frame is run more than two;
F2) run main frame overall refrigerating effect remaining sum and exceed separate unit main frame maximum cooling capacity;
F3) All hosts is all in stable state.
When team control parameter meets described stopping main frame condition f1 simultaneously) to f3) time, perform step S208, otherwise perform step S212.
It should be noted that, separate unit main frame maximum cooling capacity and main frame maximum cooling capacity, main frame maximum cooling capacity is identical with the main frame maximum cooling capacity in the step S102 of embodiment one, specifically can the step S102 of reference example one, repeats no more herein.
The condition that main frame is in stable state is: host-initiated or the stabilization time after stopping are greater than settings stabilization time, and wherein stabilization time, settings were host-initiated or the stabilization time after stopping, can by User Defined, and default value is 20 minutes.
Particularly, when operation main frame overall refrigerating effect remaining sum exceedes separate unit main frame maximum cooling capacity, namely main frame condition f2 is stopped) when setting up, illustrate that the main frame actual negative carrying capacity run is lower than the load capacity of most high energy efficiency ratio, needs to consider to stop main frame making the main frame being in running status can be in the highest COP state.
S208, judge that team control parameter meets and stop the duration of main frame condition whether to reach time preset value.
When the duration that team control parameter meets stopping main frame condition reaches time preset value, perform step S208, otherwise perform step S212.
Particularly, time preset value is condition duration settings, represents the duration settings meeting the Rule of judgment starting or stop main frame, can by User Defined, and default value is 10 minutes.
Stop main frame condition f1 when meeting in step S207 simultaneously) to f3) greater than condition duration, settings duration time, continue to perform step S209.
S209, judge whether run main frame overall refrigerating effect remaining sum exceedes the specified refrigerating capacity of separate unit main frame.
When running main frame overall refrigerating effect remaining sum and exceeding the specified refrigerating capacity of separate unit main frame, perform step S210, otherwise perform step S212.
Particularly, the refrigerating capacity of the specified refrigerating capacity of main frame for marking during product export; The computational methods running main frame overall refrigerating effect remaining sum specifically described in refer step S201, can repeat no more herein.
S210, judging that specified refrigerating capacity is less than or equal to whether the main frame running main frame overall refrigerating effect remaining sum be in can closed condition.
Can closed condition if specified refrigerating capacity is less than or equal to that the main frame running main frame overall refrigerating effect remaining sum is in, then perform step S211, otherwise perform step S212.
Particularly, according to Host Status mark, when specified refrigerating capacity be less than or equal to the main frame running main frame overall refrigerating effect remaining sum be in can closed condition time, continue to perform step S211.
S211, stop being in and the specified refrigerating capacity of closed condition can be less than or equal to the main frame running main frame overall refrigerating effect remaining sum.
Particularly, stop Host Status to be can the main frame of closed condition, and the specified refrigerating capacity of this main frame be less than or equal to and run main frame overall refrigerating effect remaining sum.
S212, to exit.
Particularly, control device terminates a team control process to central air conditioner main machine unit.
In the present embodiment, by judging the combinatory analysis of temperature and refrigerating capacity, determining on-the-spot workload demand, automatically adding and subtracting main frame, the Auto-matching realizing load controls, thus reaches the energy-efficient operational effect of central air-conditioning.
Embodiment three:
Fig. 4 shows the composition structure of the central air conditioner main machine unit group control device that the embodiment of the present invention three provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.The central air conditioner main machine unit group control device of Fig. 4 example can be the executive agent of the central air conditioner main machine machine group control method that previous embodiment one provides, and it can be a functional module in group control device or group control device.The central air conditioner main machine unit group control device of Fig. 4 example mainly comprises: parameter acquisition module 41, judge module 42, startup module 43 and stopping modular 44.Each functional module is described in detail as follows:
Parameter acquisition module 41, for obtaining the team control parameter of central air conditioner main machine unit, described team control parameter comprises: main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit and Host Status;
Judge module 42, for judging whether main frame unit leaving water temperature exceedes temperature preset value, and whether the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value;
Start module 43, for judge when described judge module described main frame unit leaving water temperature exceed temperature preset value or the actual refrigerating capacity of described main frame unit exceed maximum cooling capacity preset value time, starting described Host Status is can the main frame of initiate mode;
Stopping modular 44, for judging that described main frame unit leaving water temperature is lower than described temperature preset value when described judge module, and when the actual refrigerating capacity of described main frame unit is lower than described maximum cooling capacity preset value, stop described Host Status to be can the main frame of closed condition.
From the central air conditioner main machine unit group control device of above-mentioned Fig. 4 example, the present embodiment is by determining workload demand to the judgement of temperature and refrigerating capacity, and automatically add and subtract main frame according to load condition, the Auto-matching realizing load controls, thus reaches the energy-efficient operational effect of central air-conditioning.
Embodiment four:
Fig. 5 shows the composition structure of the central air conditioner main machine unit group control device that the embodiment of the present invention four provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.The central air conditioner main machine unit group control device of Fig. 5 example can be the executive agent of the central air conditioner main machine machine group control method that previous embodiment two provides, and it can be a functional module in group control device or group control device.The central air conditioner main machine unit group control device of Fig. 5 example mainly comprises: parameter acquisition module 51, judge module 52, startup module 53 and stopping modular 54.Each functional module is described in detail as follows:
Parameter acquisition module 51, for obtaining the team control parameter of central air conditioner main machine unit, described team control parameter comprises: the load factor of main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit, Host Status, operation main frame, the rate of temperature fall of main frame, the quantity running main frame, operation main frame overall refrigerating effect remaining sum;
Judge module 52, for judging whether main frame unit leaving water temperature exceedes temperature preset value, and whether the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value;
Start module 53, for judge when described judge module described main frame unit leaving water temperature exceed temperature preset value or the actual refrigerating capacity of described main frame unit exceed maximum cooling capacity preset value time, starting described Host Status is can the main frame of initiate mode;
Stopping modular 54, for judging that described main frame unit leaving water temperature is lower than described temperature preset value when described judge module, and when the actual refrigerating capacity of described main frame unit is lower than described maximum cooling capacity preset value, stop described Host Status to be can the main frame of closed condition.
Particularly, start module 53 comprise start main frame judge that submodule 531 and start-up time judge submodule 532.Each functional module is described in detail as follows:
Start main frame and judge submodule 531, for when described main frame unit leaving water temperature exceedes described temperature preset value or the actual refrigerating capacity of described main frame unit exceedes described maximum cooling capacity preset value, judge whether described team control parameter meets following startup main frame condition g1 simultaneously) to g3):
G1) load factor that described every platform runs main frame exceedes preset baseline load rate;
G2) described every platform runs the rate of temperature fall of main frame lower than temperature decrease rate preset value;
G3) All hosts is all in stable state;
If described team control parameter meets described startup main frame condition g1 simultaneously) to g3), then starting described Host Status is can the main frame of initiate mode.
Judge submodule 532 start-up time, if meet described startup main frame condition g1 for described team control parameter simultaneously) to g3), then judge whether the duration that described team control parameter meets described startup main frame condition reaches time preset value, and when the duration that described team control parameter meets described startup main frame condition reaches described time preset value, starting described Host Status is can the main frame of initiate mode.
Particularly, stopping modular 54 comprise stop main frame judging submodule 541, dwell time judges submodule 542 and Selection of chiller submodule 543.Each functional module is described in detail as follows:
Main frame is stopped to judge submodule 541, for working as described main frame unit leaving water temperature lower than described temperature preset value, and when the actual refrigerating capacity of described main frame unit is lower than described maximum cooling capacity preset value, judge whether described team control parameter meets following stopping main frame condition h1 simultaneously) to h3):
H1) quantity of described operation main frame is more than two;
H2) described operation main frame overall refrigerating effect remaining sum exceedes described separate unit main frame maximum cooling capacity;
H3) All hosts is all in stable state;
If described team control parameter meets described stopping main frame condition h1 simultaneously) to h3), then stop described Host Status to be can the main frame of closed condition.
Dwell time judges submodule 542, if meet described stopping main frame condition h1 for described team control parameter simultaneously) to h3), then judge whether the duration that described team control parameter meets described stopping main frame condition reaches described time preset value, and when the duration that described team control parameter meets described stopping main frame condition reaches described time preset value, stop described Host Status to be can the main frame of closed condition.
Selection of chiller submodule 543, duration for meeting described stopping main frame condition when described team control parameter is when reaching described time preset value, judge whether described operation main frame overall refrigerating effect remaining sum exceedes the specified refrigerating capacity of separate unit main frame, and whether the main frame that specified refrigerating capacity is less than or equal to described operation main frame overall refrigerating effect remaining sum is can closed condition, if the main frame that described specified refrigerating capacity is less than or equal to described operation main frame overall refrigerating effect remaining sum is for can closed condition, described specified refrigerating capacity is then stopped to be less than or equal to the main frame of described operation main frame overall refrigerating effect remaining sum.
From the central air conditioner main machine unit group control device of above-mentioned Fig. 5 example, the present embodiment is by judging the combinatory analysis of temperature and refrigerating capacity, determine on-the-spot workload demand, automatically main frame is added and subtracted, the Auto-matching realizing load controls, thus reaches the energy-efficient operational effect of central air-conditioning.
It should be noted that, each embodiment in this description all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, part identical or similar between each embodiment mutually see.For device class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
It should be noted that in said apparatus embodiment, included modules and unit are carry out dividing according to function logic, but are not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional module and unit, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
One of ordinary skill in the art will appreciate that, the all or part of step realized in the various embodiments described above method is that the hardware that can carry out instruction relevant by program has come, corresponding program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a central air conditioner main machine machine group control method, is characterized in that, comprising:
Obtain the team control parameter of central air conditioner main machine unit, described team control parameter comprises: main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit and Host Status;
When described main frame unit leaving water temperature exceedes temperature preset value or the actual refrigerating capacity of described main frame unit exceedes maximum cooling capacity preset value, starting described Host Status is can the main frame of initiate mode;
When described main frame unit leaving water temperature is lower than described temperature preset value, and the actual refrigerating capacity of described main frame unit lower than described maximum cooling capacity preset value time, stop described Host Status to be can the main frame of closed condition.
2. central air conditioner main machine machine group control method according to claim 1, it is characterized in that, described team control parameter also comprises: every platform runs the load factor of main frame and the rate of temperature fall of every platform operation main frame, then described when described main frame unit leaving water temperature exceedes temperature preset value or the actual refrigerating capacity of described main frame unit exceedes maximum cooling capacity preset value, starting described Host Status is the main frame of initiate mode to comprise:
When described main frame unit leaving water temperature exceedes described temperature preset value or the actual refrigerating capacity of described main frame unit exceedes described maximum cooling capacity preset value, judge whether described team control parameter meets following startup main frame condition a1 simultaneously) to a3):
A1) load factor that described every platform runs main frame exceedes preset baseline load rate;
A2) described every platform runs the rate of temperature fall of main frame lower than temperature decrease rate preset value;
A3) All hosts is all in stable state;
If described team control parameter meets described startup main frame condition a1 simultaneously) to a3), then starting described Host Status is can the main frame of initiate mode.
3. central air conditioner main machine machine group control method according to claim 2, it is characterized in that, if described team control parameter meets described startup main frame condition a1 simultaneously) to a3), then starting described Host Status is the main frame of initiate mode also to comprise:
If described team control parameter meets described startup main frame condition a1 simultaneously) to a3), then judge whether the duration that described team control parameter meets described startup main frame condition reaches time preset value, when the duration that described team control parameter meets described startup main frame condition reaches described time preset value, starting described Host Status is can the main frame of initiate mode.
4. central air conditioner main machine machine group control method according to claim 1, it is characterized in that, described team control parameter also comprises: run the quantity of main frame, run main frame overall refrigerating effect remaining sum and separate unit main frame maximum cooling capacity, then described when described main frame unit leaving water temperature is lower than described temperature preset value, and when the actual refrigerating capacity of described main frame unit is lower than described maximum cooling capacity preset value, stop described Host Status to be the main frame of closed condition to comprise:
When described main frame unit leaving water temperature is lower than described temperature preset value, and the actual refrigerating capacity of described main frame unit lower than described maximum cooling capacity preset value time, judge that whether described team control parameter meets simultaneously and stop main frame condition b1 below) to b3):
B1) quantity of described operation main frame is more than two;
B2) described operation main frame overall refrigerating effect remaining sum exceedes described separate unit main frame maximum cooling capacity;
B3) All hosts is all in stable state;
If described team control parameter meets described stopping main frame condition b1 simultaneously) to b3), then stop described Host Status to be can the main frame of closed condition.
5. central air conditioner main machine machine group control method according to claim 4, it is characterized in that, if described team control parameter meets described stopping main frame condition b1 simultaneously) to b3), then stop described Host Status to be the main frame of closed condition also to comprise:
If described team control parameter meets described stopping main frame condition b1 simultaneously) to b3), then judge whether the duration that described team control parameter meets described stopping main frame condition reaches time preset value, and when the duration that described team control parameter meets described stopping main frame condition reaches described time preset value, stop described Host Status to be can the main frame of closed condition.
6. central air conditioner main machine machine group control method according to claim 5, it is characterized in that, described when the duration that described team control parameter meets described stopping main frame condition reaches described time preset value, stop described Host Status to be the main frame of closed condition also to comprise:
When the duration that described team control parameter meets described stopping main frame condition reaches described time preset value, judge whether described operation main frame overall refrigerating effect remaining sum exceedes the specified refrigerating capacity of separate unit main frame, and whether the main frame that specified refrigerating capacity is less than or equal to described operation main frame overall refrigerating effect remaining sum is can closed condition, if described operation main frame overall refrigerating effect remaining sum exceedes the specified refrigerating capacity of described separate unit main frame, and the main frame that described specified refrigerating capacity is less than or equal to described operation main frame overall refrigerating effect remaining sum is for can closed condition, described specified refrigerating capacity is then stopped to be less than or equal to the main frame of described operation main frame overall refrigerating effect remaining sum.
7. a central air conditioner main machine unit group control device, is characterized in that, comprising:
Parameter acquisition module, for obtaining the team control parameter of central air conditioner main machine unit, described team control parameter comprises: main frame unit leaving water temperature, the actual refrigerating capacity of main frame unit and Host Status;
Judge module, for judging whether main frame unit leaving water temperature exceedes temperature preset value, and whether the actual refrigerating capacity of main frame unit exceedes maximum cooling capacity preset value;
Start module, for judge when described judge module described main frame unit leaving water temperature exceed temperature preset value or the actual refrigerating capacity of described main frame unit exceed maximum cooling capacity preset value time, starting described Host Status is can the main frame of initiate mode;
Stopping modular, for judging that described main frame unit leaving water temperature is lower than described temperature preset value when described judge module, and the actual refrigerating capacity of described main frame unit lower than described maximum cooling capacity preset value time, stop described Host Status to be can the main frame of closed condition.
8. central air conditioner main machine unit group control device according to claim 7, it is characterized in that, described team control parameter also comprises: every platform runs the rate of temperature fall that the load factor of main frame and every platform run main frame, then described startup module also comprises and starts main frame and judge submodule;
Described startup main frame judges submodule, for when described main frame unit leaving water temperature exceedes described temperature preset value or the actual refrigerating capacity of described main frame unit exceedes described maximum cooling capacity preset value, judge whether described team control parameter meets following startup main frame condition c1 simultaneously) to c3):
C1) load factor that described every platform runs main frame exceedes preset baseline load rate;
C2) described every platform runs the rate of temperature fall of main frame lower than temperature decrease rate preset value;
C3) All hosts is all in stable state;
If described team control parameter meets described startup main frame condition c1 simultaneously) to c3), then starting described Host Status is can the main frame of initiate mode;
Described startup module also comprises and judges submodule start-up time, if meet described startup main frame condition c1 for described team control parameter simultaneously) to c3), then judge whether the duration that described team control parameter meets described startup main frame condition reaches time preset value, and when the duration that described team control parameter meets described startup main frame condition reaches described time preset value, starting described Host Status is can the main frame of initiate mode.
9. central air conditioner main machine unit group control device according to claim 7, it is characterized in that, described team control parameter also comprises: run the quantity of main frame, run main frame overall refrigerating effect remaining sum and separate unit main frame maximum cooling capacity, then described stopping modular also comprises and stops main frame judging submodule;
Described stopping main frame judging submodule, for working as described main frame unit leaving water temperature lower than described temperature preset value, and when the actual refrigerating capacity of described main frame unit is lower than described maximum cooling capacity preset value, judge whether described team control parameter meets following stopping main frame condition d1 simultaneously) to d3):
D1) quantity of described operation main frame is more than two;
D2) described operation main frame overall refrigerating effect remaining sum exceedes described separate unit main frame maximum cooling capacity;
D3) All hosts is all in stable state;
If described team control parameter meets described stopping main frame condition d1 simultaneously) to d3), then stop described Host Status to be can the main frame of closed condition.
10. central air conditioner main machine unit group control device according to claim 9, it is characterized in that, described stopping modular also comprises dwell time and judges submodule, if meet described stopping main frame condition d1 for described team control parameter simultaneously) to d3), then judge whether the duration that described team control parameter meets described stopping main frame condition reaches described time preset value, and when the duration that described team control parameter meets described stopping main frame condition reaches described time preset value, stop described Host Status to be can the main frame of closed condition;
Described stopping modular also comprises Selection of chiller submodule, duration for meeting described stopping main frame condition when described team control parameter is when reaching described time preset value, judge whether described operation main frame overall refrigerating effect remaining sum exceedes the specified refrigerating capacity of separate unit main frame, and whether the main frame that specified refrigerating capacity is less than or equal to described operation main frame overall refrigerating effect remaining sum is can closed condition, if the main frame that described specified refrigerating capacity is less than or equal to described operation main frame overall refrigerating effect remaining sum is for can closed condition, described specified refrigerating capacity is then stopped to be less than or equal to the main frame of described operation main frame overall refrigerating effect remaining sum.
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