CN104612954A - Water pump control method and device - Google Patents
Water pump control method and device Download PDFInfo
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- CN104612954A CN104612954A CN201510039701.0A CN201510039701A CN104612954A CN 104612954 A CN104612954 A CN 104612954A CN 201510039701 A CN201510039701 A CN 201510039701A CN 104612954 A CN104612954 A CN 104612954A
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Abstract
The invention discloses a water pump control method and device. The method comprises the steps that running parameters of each water pump to be controlled in a water pump assembly are detected and at least comprise water pump flow and lift of the water pumps to be controlled. The water pump assembly comprises a plurality of to-be-controlled water pump sets. Each to-be-controlled water pump set comprises water pumps to be controlled, wherein the number of the water pumps to be controlled in different to-be-controlled water pump sets is different. The running power of each to-be-controlled water pump set is obtained according to the water pump flow and lift of the water pumps to be controlled. The target running power meeting the preset condition is selected from the multiple levels of running power, and the to-be-controlled water pump set corresponding to the target running power run. The technical problem that due to the fact that an existing water pump control method is adopted, the system energy consumption is high is solved.
Description
Technical field
The present invention relates to water pump field, in particular to a kind of water pump control method and device.
Background technique
In traditional air-conditioning system, usually utilize water pump to carry liquid to increase the energy of liquid.Wherein, in the system of cold station, the energy consumption of water pump accounts for the 20%-30% of cold station system energy consumption, obviously, the impact of water pump on system is very important, and in order to respond the demand of the environmental protection and energy saving advocated now, a lot of producer starts to seek how to control pump energy saving and runs.
At present, in most air-conditioning system, water pump is all multiple stage parallel running, and conventional control mode is when online water pump cannot meet traffic requirement, and just open next water pump, wherein, each online water pump is all fully loaded work.That is, when all online water pump full load operation also cannot meet the demand of actual flow, other parallel water pumps will be restarted and support to run.Therefore, the actual motion number of units of water pump and the load factor of every platform water pump determine the energy consumption of whole water pump group, but, because the flow that flows through every platform water pump and the energy consumed not are linear relationship, that is, along with the change of flow, energy consumption also has different corresponding relations, thus, water pump is fully loaded with this mode of work is not obviously the most energy-conservation.So, how to control water pump operation to realize reducing system energy consumption, just become a problem in the urgent need to address.
For the problem proposed in prior art, at present effective solution is not yet proposed.
Summary of the invention
Embodiments provide a kind of water pump control method and device, at least to solve the higher technical problem of system energy consumption owing to adopting existing water pump control method to cause.
According to an aspect of the embodiment of the present invention, provide a kind of water pump control method, comprise: the Operational Limits detecting every platform water pump to be controlled in water pump set, wherein, pump capacity and the lift of above-mentioned water pump to be controlled is at least comprised in above-mentioned Operational Limits, above-mentioned water pump set comprises: many groups water pump group to be controlled, often organizes the water pump to be controlled that water pump group to be controlled comprises varying number; According to above-mentioned pump capacity and the above-mentioned lift of above-mentioned water pump to be controlled, obtain the above-mentioned operate power often organizing water pump group to be controlled; The object run power meeting predetermined condition is selected from multiple operate power, run the one group above-mentioned to be controlled water pump group corresponding with above-mentioned object run power and detect the Operational Limits flowing through water pump to be controlled, wherein, pump capacity and the lift of above-mentioned water pump to be controlled is at least comprised in above-mentioned Operational Limits; The operate power of the water pump above-mentioned to be controlled of varying number is obtained according to the above-mentioned pump capacity of above-mentioned water pump to be controlled and above-mentioned lift; From above-mentioned operate power, select the object run power meeting predetermined condition, control the water pump operation above-mentioned to be controlled of the destination number corresponding with above-mentioned object run power according to above-mentioned object run power.
Alternatively, the above-mentioned above-mentioned pump capacity according to above-mentioned water pump to be controlled and above-mentioned lift, obtain the above-mentioned operate power often organizing water pump group to be controlled and comprise: often organize according to the above-mentioned lift acquisition of above-mentioned water pump to be controlled is above-mentioned the frequency of okperation that in water pump group to be controlled, above-mentioned water pump to be controlled is corresponding; Obtain the characteristic coefficient matched with above-mentioned frequency of okperation, wherein, above-mentioned characteristic coefficient is for calculating above-mentioned operate power; Utilize the pump capacity of every above-mentioned water pump to be controlled of platform in above-mentioned characteristic coefficient and the water pump group above-mentioned to be controlled corresponding with above-mentioned characteristic coefficient, calculate the above-mentioned operate power that above-mentioned water pump group to be controlled is corresponding, wherein, the above-mentioned total pump capacity often organizing water pump group to be controlled is constant.
Alternatively, the above-mentioned pump capacity utilizing every above-mentioned water pump to be controlled of platform in above-mentioned characteristic coefficient and the water pump group above-mentioned to be controlled corresponding with above-mentioned characteristic coefficient, the above-mentioned operate power calculating above-mentioned water pump group to be controlled corresponding comprises: by the above-mentioned operate power of following formulae discovery
wherein, above-mentioned A
ifor the characteristic coefficient matched with above-mentioned frequency of okperation, above-mentioned i=0,1 ... n, said n be greater than 0 real coefficient, above-mentioned Q is the pump capacity of every above-mentioned water pump to be controlled of platform in the water pump group above-mentioned to be controlled corresponding with above-mentioned characteristic coefficient.
Alternatively, above-mentionedly from multiple operate power, select to meet the object run power of predetermined condition, run the one group above-mentioned to be controlled water pump group corresponding with above-mentioned object run power to comprise: the size of more above-mentioned multiple operate power and predetermined threshold, and judge in above-mentioned multiple operate power, whether to comprise the above-mentioned object run power being less than or equal to above-mentioned predetermined threshold; Comprise above-mentioned object run power if judge, then run the one group above-mentioned to be controlled water pump group corresponding with above-mentioned object run power.
Alternatively, above-mentionedly from multiple operate power, select to meet the object run power of predetermined condition, run the one group above-mentioned to be controlled water pump group corresponding with above-mentioned object run power and comprise: above-mentioned multiple operate power is sorted; Select minimum above-mentioned operate power as above-mentioned object run power, and run the one group above-mentioned to be controlled water pump group corresponding with above-mentioned object run power.
Alternatively, in the set of above-mentioned detection water pump every platform water pump to be controlled Operational Limits before, also comprise: the Feature Mapping relation obtaining above-mentioned water pump to be controlled, wherein, at least comprise the above-mentioned frequency of okperation of above-mentioned water pump to be controlled, the above-mentioned lift of above-mentioned water pump to be controlled in above-mentioned Feature Mapping relation and often organize the corresponding relation of the quantity comprised in above-mentioned water pump group to be controlled.
Alternatively, the above-mentioned above-mentioned lift according to above-mentioned water pump to be controlled obtains and above-mentionedly often organizes the frequency of okperation that in water pump group to be controlled, above-mentioned water pump to be controlled is corresponding and comprise: search above-mentioned frequency of okperation according to above-mentioned Feature Mapping relation.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of pump control unit, comprise: detection unit, for detecting the Operational Limits of every platform water pump to be controlled in water pump set, wherein, at least comprise pump capacity and the lift of above-mentioned water pump to be controlled in above-mentioned Operational Limits, above-mentioned water pump set comprises: many groups water pump group to be controlled, often organizes the water pump to be controlled that water pump group to be controlled comprises varying number; First acquiring unit, for according to the above-mentioned pump capacity of above-mentioned water pump to be controlled and above-mentioned lift, obtains the above-mentioned operate power often organizing water pump group to be controlled; Control unit, for selecting the object run power meeting predetermined condition from multiple operate power, runs the one group above-mentioned to be controlled water pump group corresponding with above-mentioned object run power.
Alternatively, above-mentioned first acquiring unit comprises: the first acquisition module, for often organizing according to the above-mentioned lift acquisition of above-mentioned water pump to be controlled is above-mentioned the frequency of okperation that in water pump group to be controlled, above-mentioned water pump to be controlled is corresponding; Second acquisition module, for obtaining the characteristic coefficient matched with above-mentioned frequency of okperation, wherein, above-mentioned characteristic coefficient is for calculating above-mentioned operate power; Computing module, for utilizing the pump capacity of every above-mentioned water pump to be controlled of platform in above-mentioned characteristic coefficient and the water pump group above-mentioned to be controlled corresponding with above-mentioned characteristic coefficient, calculate the above-mentioned operate power that above-mentioned water pump group to be controlled is corresponding, wherein, the above-mentioned total pump capacity often organizing water pump group to be controlled is constant.
Alternatively, above-mentioned computing module comprises: calculating sub module, for by the above-mentioned operate power P of following formulae discovery:
wherein, above-mentioned A
ifor the characteristic coefficient matched with above-mentioned frequency of okperation, above-mentioned i=0,1 ... n, said n be greater than 0 real coefficient, above-mentioned Q is the pump capacity of every above-mentioned water pump to be controlled of platform in the water pump group above-mentioned to be controlled corresponding with above-mentioned characteristic coefficient.
Alternatively, above-mentioned control unit comprises: multilevel iudge module, for the size of more multiple operate power and predetermined threshold, and judges whether comprise the above-mentioned object run power being less than or equal to above-mentioned predetermined threshold in above-mentioned multiple operate power; First control module, for when judging to comprise above-mentioned object run power, runs the one group above-mentioned to be controlled water pump group corresponding with above-mentioned object run power.
Alternatively, above-mentioned control unit comprises: order module, for sorting to above-mentioned multiple operate power; Second control module, for selecting minimum above-mentioned operate power as above-mentioned object run power, and runs the one group above-mentioned to be controlled water pump group corresponding with above-mentioned object run power.
Alternatively, said apparatus also comprises: second acquisition unit, for before the Operational Limits detecting every platform water pump to be controlled in water pump set, obtain the Feature Mapping relation of above-mentioned water pump to be controlled, wherein, at least comprise the above-mentioned frequency of okperation of above-mentioned water pump to be controlled, the above-mentioned lift of above-mentioned water pump to be controlled in above-mentioned Feature Mapping relation and often organize the corresponding relation of the quantity comprised in above-mentioned water pump group to be controlled.
Alternatively, above-mentioned first acquisition module comprises: obtain submodule, for searching above-mentioned frequency of okperation according to above-mentioned Feature Mapping relation.
In embodiments of the present invention, by detecting the current Operational Limits flowing through every platform water pump to be controlled in water pump set, at least obtain pump capacity and the lift of water pump to be controlled, wherein, water pump set comprises many groups water pump to be controlled, often organize the water pump to be controlled that water pump group to be controlled comprises varying number, and utilize the calculating of above-mentioned Operational Limits often to organize operate power corresponding to water pump group to be controlled, so that select the object run power meeting predetermined condition, and then run the one group to be controlled water pump group corresponding with object run power, thus overcome the larger problem of energy consumption that the controlling method that just starts another water pump in prior art after water pump is fully loaded with causes, realize selecting the most energy-conservation water pump control program by the present embodiment, run according to the water pump quantity after adjustment, to reach the energy consumption of water pump in reduction system, and make the maximized effect of operational energy efficiency of whole joint air-conditioning system.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the optional a kind of water pump control method according to the embodiment of the present invention;
Fig. 2 is the optional a kind of characteristic curve of pump schematic diagram according to the embodiment of the present invention;
Fig. 3 is the flow process of the optional another kind of water pump control method according to the embodiment of the present invention; And
Fig. 4 is the schematic diagram of the optional another kind of pump control unit according to the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged, in the appropriate case so that embodiments of the invention described herein.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to the embodiment of the present invention, provide a kind of water pump control method, as shown in Figure 1, the method comprises:
S102, detect the Operational Limits of every platform water pump to be controlled in water pump set, wherein, in Operational Limits, at least comprise pump capacity and the lift of water pump to be controlled, water pump set comprises: many groups water pump group to be controlled, often organizes the water pump to be controlled that water pump group to be controlled comprises varying number;
S104, according to pump capacity and the lift of water pump to be controlled, obtains the operate power often organizing water pump group to be controlled;
S106, selects the object run power meeting predetermined condition, runs the one group to be controlled water pump group corresponding with object run power from multiple operate power.
Alternatively, in the present embodiment, above-mentioned water pump control method can be, but not limited to be applied in the variable frequency pump in air-conditioning system, such as, suppose that the variable frequency pump in central air-conditioning system has M platform, wherein, M platform variable frequency pump can be combined into many groups water pump group to be controlled by varying number, the pump capacity of every platform water pump is equal, detect pump capacity and the lift of every platform variable frequency pump in above-mentioned water pump set, and the operate power often organizing water pump group to be controlled is obtained according to above-mentioned data acquisition, so that select the object run power meeting predetermined condition from multiple operate power, run the one group to be controlled water pump group corresponding with described object run power, thus realization reduces the operation energy consumption of variable frequency pump to realize the Energy Saving Control to variable frequency pump.Above-mentioned citing is a kind of example, and the present embodiment does not do any restriction to this.
Alternatively, in the present embodiment, above-mentioned Operational Limits can include but not limited to: pump capacity, frequency of okperation, the lift of water pump current time to be controlled.Wherein, above-mentioned pump capacity can include but not limited to the pump capacity of every platform water pump, and above-mentioned lift can be, but not limited to flow through with unit weight fluid the energy that pump obtains and represents, also can represent with the maximum range of the liquid flowing through water pump.
Alternatively, in the present embodiment, many groups of water pump groups to be controlled in above-mentioned water pump set can include but not limited to the quantity traveling through whole water pump.Such as, totally 5, whole water pump, then many groups of water pump groups to be controlled in above-mentioned water pump set will comprise: first group, comprising 1 water pump; Second group, comprising 2 water pumps; 3rd group, comprising 3 water pumps; 4th group, comprising 4 water pumps; 5th group, comprising 5 water pumps.By obtaining the operate power of water pump group to be controlled respectively, so that select the water pump group to be controlled corresponding to least energy consumption, and controlling this water pump group operation to be controlled, realizing the Energy Saving Control to water pump.
Alternatively, in the present embodiment, the operate power that the above-mentioned pump capacity according to water pump to be controlled and lift obtain water pump group to be controlled can include but not limited to: obtain according to above-mentioned lift and often organize water pump group to be controlled for calculating the characteristic coefficient of operate power, utilizes the pump capacity of above-mentioned characteristic coefficient and correspondence to calculate operate power.Wherein, above-mentioned characteristic coefficient can include but not limited to utilize the calculation of parameter in Feature Mapping relation to obtain, wherein, the parameter in above-mentioned Feature Mapping relation at least comprises the frequency of okperation of water pump to be controlled, the quantity often organizing water pump group to be controlled and lift, further, above-mentioned Feature Mapping relation can be, but not limited to acquire according to the characteristic curve of pump of water pump to be controlled, characteristic curve of pump can as shown in Figure 2, and wherein, abscissa represents pump capacity, by Q mark, Q
0represent a pump capacity during water pump operation, Q
0the pump capacity of every platform water pump during/2 expression two water pump operations, Q
0the pump capacity of every platform water pump during/3 expression three water pump operations; Y coordinate represents lift, identifies with H; In Fig. 2, same curves represents the relation of pump capacity and lift under same frequency of okperation, and wherein frequency of okperation Hz identifies.
Alternatively, in the present embodiment, above-mentioned select from operate power the mode meeting the object run power of predetermined condition can include but not limited to following one of at least:
1) size of more multiple operate power and predetermined threshold, and judge in multiple operate power, whether to comprise the object run power being less than or equal to predetermined threshold;
2) multiple operate power is sorted, multiple operate power is sorted.
It should be noted that, above-mentioned predetermined threshold can be, but not limited to arrange according to different application scenarios, further, when the operate power being less than or equal to predetermined threshold comprises multiple, can be, but not limited to reset the Second Threshold being less than or equal to above-mentioned predetermined threshold, the operate power being less than or equal to predetermined threshold is compared with Second Threshold again, until select target operate power.Further, determine to need to start the water pump group to be controlled controlled, and then realize the object of energy consumption of reduction system.
Particularly, the start-up course of above-mentioned water pump can be as follows: when supposing that to adjust control be two water pump operations by water pump operation, the frequency of water pump temporarily will keep Hz1, and move along on curve corresponding to Hz1 as shown in Figure 2, lift becomes H
2, after a period of time, owing to being subject to lift H
1restriction, the frequency of water pump will drop to Hz2, thus realize adjusting the Energy Saving Control of water pump.
By the embodiment that the application provides, by detecting the current Operational Limits flowing through every platform water pump to be controlled in water pump set, at least obtain pump capacity and the lift of water pump to be controlled, wherein, water pump set comprises many groups water pump to be controlled, often organize the water pump to be controlled that water pump group to be controlled comprises varying number, and utilize the calculating of above-mentioned Operational Limits often to organize operate power corresponding to water pump group to be controlled, so that select the object run power meeting predetermined condition, and then run the one group to be controlled water pump group corresponding with object run power, thus overcome the larger problem of energy consumption that the controlling method that just starts another water pump in prior art after water pump is fully loaded with causes, realize selecting the most energy-conservation water pump control program by the present embodiment, run according to the water pump quantity after adjustment, to reach the energy consumption of water pump in reduction system, and make the maximized effect of operational energy efficiency of whole joint air-conditioning system.
As the optional scheme of one, as shown in Figure 3, step S104, according to described pump capacity and the described lift of described water pump to be controlled, obtains the described operate power often organizing water pump group to be controlled and comprises:
S302, obtains according to water lift of pump to be controlled and often organizes the frequency of okperation that in water pump group to be controlled, water pump to be controlled is corresponding;
S304, obtain the characteristic coefficient matched with frequency of okperation, wherein, characteristic coefficient is for calculating operate power;
S306, utilize the pump capacity of every platform water pump to be controlled in characteristic coefficient and the water pump group to be controlled corresponding with characteristic coefficient, calculate the operate power that water pump group to be controlled is corresponding, wherein, the total pump capacity often organizing water pump group to be controlled is constant.
Alternatively, in the present embodiment, above-mentioned characteristic coefficient can include but not limited to utilize the calculation of parameter in Feature Mapping relation to obtain, wherein, parameter in above-mentioned Feature Mapping relation at least comprises the frequency of okperation of water pump to be controlled, the quantity often organizing water pump group to be controlled and lift, further, above-mentioned Feature Mapping relation can be, but not limited to acquire according to the characteristic curve of pump of water pump to be controlled.
Wherein, the above-mentioned mode obtaining characteristic coefficient in Feature Mapping relation that utilizes can include but not limited to: the frequency of okperation according to matching with characteristic coefficient obtains relevant parameter further from characteristic of correspondence mapping relations, as often organized quantity and the lift of water pump group to be controlled, calculate characteristic of correspondence coefficient according to above-mentioned parameter according to pre-defined algorithm.
Be described shown in concrete composition graphs 2, for the variable frequency pump of air-conditioning system, wherein, above-mentioned air-conditioning system comprises three variable frequency pumps, because in system, variable frequency pump is determined, then the lift of variable frequency pump also determines (the lift H such as, shown in Fig. 2 thereupon
1).When detecting the Operational Limits of variable frequency pump current time, suppose to only have a variable frequency pump in operation, wherein pump capacity is Q
0, lift is H
1the frequency of okperation often organizing water pump group to be controlled then can be obtained according to this lift, such as, the frequency of okperation of a variable frequency pump is Hz1, and the frequency of okperation of two every platforms of variable frequency pump is Hz2, and the frequency of okperation of three every platforms of variable frequency pump is Hz3, further, in Feature Mapping relation, obtain other parameters according to frequency of okperation, above-mentioned parameter is inputted predetermined software, and then calculate the characteristic coefficient matched with this frequency of okperation.Such as, frequency of okperation Hz1, calculating a corresponding stack features coefficient is Ap
1, Ap
2... Ap
n, frequency of okperation Hz2, a corresponding stack features coefficient is Aq
1, Aq
2... Aq
n, the stack features coefficient that frequency of okperation Hz3 is corresponding is Ar
1, Ar
2... Ar
n.
Further, utilize the pump capacity of every platform variable frequency pump in above-mentioned characteristic coefficient and the water pump group to be controlled corresponding with characteristic coefficient to calculate operate power corresponding to water pump group to be controlled.Wherein, calculation method can include but not limited to be obtained by following formulae discovery:
Wherein, above-mentioned A
ifor characteristic coefficient, i=0,1 ... n, n be greater than 0 real coefficient, Q is the pump capacity of every platform water pump in the water pump group to be controlled corresponding with characteristic coefficient.
By the embodiment that the application provides, obtain according to lift and often organize frequency of okperation corresponding to water pump group to be controlled, and then obtain the characteristic coefficient for calculating operate power according to frequency of okperation, the pump capacity of every platform water pump to be controlled in characteristic coefficient and the water pump group to be controlled corresponding with characteristic coefficient is utilized to calculate operate power, thus realize obtaining and organizing multiple operate powers corresponding to water pump group to be controlled more, show that consumed energy meets the water pump group to be controlled of the water pump of predetermined condition so that compare, and then run this water pump group to be controlled, to realize the Energy Saving Control to water pump, improve the operational energy efficiency of system simultaneously.
As the optional scheme of one, utilize the pump capacity of every platform water pump to be controlled in characteristic coefficient and the water pump group to be controlled corresponding with characteristic coefficient, the operate power calculating water pump group to be controlled corresponding comprises:
S1, by following formulae discovery operate power P:
Wherein, A
ifor the characteristic coefficient matched with frequency of okperation, i=0,1 ... n, n be greater than 0 real coefficient, Q is the pump capacity of every platform water pump to be controlled in the water pump group to be controlled corresponding with characteristic coefficient.
Specifically be described in conjunction with following example, shown in composition graphs 2, for the variable frequency pump of air-conditioning system, wherein, above-mentioned air-conditioning system comprises three variable frequency pumps, because in system, variable frequency pump is determined, then the lift of variable frequency pump also determines (the lift H such as, shown in Fig. 2 thereupon
1).
In the present embodiment, required characteristic coefficient can with reference to above-mentioned example gained.When a variable frequency pump runs, frequency of okperation is Hz1, and pump capacity is Q
0, then operate power can obtain according to above-mentioned formula:
n=1; If when two water pumps run, according to lift H simultaneously
1known frequency of okperation is Hz2, and pump capacity is Q
0/ 2, then operate power can obtain according to above-mentioned formula:
n=2; If when three water pumps run, according to lift H simultaneously
1known frequency of okperation is Hz3, and pump capacity is Q
0/ 3, then operate power can obtain according to above-mentioned formula:
By the embodiment that the application provides, realize accurately calculating operate power corresponding to many groups water pump group to be controlled by above-mentioned formula, the object run power that power consumption meets predetermined condition is run so that select from multiple operate power, and then run the to be controlled water pump group corresponding with object run power, realize the effect of the energy consumption reducing water pump operation.
As the optional scheme of one, from multiple operate power, select the object run power meeting predetermined condition, run the one group to be controlled water pump group corresponding with object run power and comprise:
S1, the size of more multiple operate power and predetermined threshold, and judge in multiple operate power, whether to comprise the object run power being less than or equal to predetermined threshold;
S2, comprises object run power if judge, then run the one group to be controlled water pump group corresponding with object run power.
It should be noted that, above-mentioned predetermined threshold can be, but not limited to arrange according to different application scenarios, further, when the operate power being less than or equal to predetermined threshold comprises multiple, can be, but not limited to reset the Second Threshold being less than or equal to above-mentioned predetermined threshold, the operate power being less than or equal to predetermined threshold is compared with Second Threshold again, until select target operate power.Further, determine to need to start the water pump group to be controlled controlled, and then realize the object of energy consumption of reduction system.
Such as, that supposes to be less than or equal to predetermined threshold only has P
3, then control to start and P
3three corresponding water pump operations; And if be less than or equal to predetermined threshold have P
2, P
3, then Second Threshold and P is set
2, P
3if, P
3be less than or equal to threshold value, then control to start and P
3two corresponding water pump operations.
By the embodiment that the application provides, by organizing multiple operate power corresponding to water pump group to be controlled and predetermined threshold compares by with in water pump set more, thus judge in multiple operate power, whether to comprise the object run power being less than or equal to predetermined threshold, repeatedly obtaining object run power more afterwards, thus realize running according to the water pump group to be controlled corresponding with object run power, make water pump operation energy consumption minimized to reach, the maximized object of system cloud gray model efficiency.
As the optional scheme of one, from multiple operate power, select the object run power meeting predetermined condition, run the one group to be controlled water pump group corresponding with object run power and comprise:
S1, sorts to multiple operate power;
S2, selects minimum operate power as object run power, and runs the one group to be controlled water pump group corresponding with object run power.
Specifically to be described in conjunction with following example, to sort by the above-mentioned operate power calculated, suppose that the relation of above-mentioned operate power is P
1<P
2<P
3, then P is selected
3as object run power, P
3corresponding water pump group to be controlled three water pumps will be activated operation, thus realize the object of the energy consumption of reduction system.
By the embodiment that the application provides, by multiple operate powers corresponding for many groups that calculate water pump groups to be controlled are sorted, thus object run power is selected from multiple operate power, thus realize running water pump group to be controlled corresponding to this object run power, make water pump operation energy consumption minimized to reach, the maximized object of system cloud gray model efficiency.
As the optional scheme of one, before the Operational Limits detecting every platform water pump to be controlled in water pump set, also comprise:
S1, obtains the Feature Mapping relation of water pump to be controlled, wherein, at least comprises the frequency of okperation of water pump to be controlled, water lift of pump to be controlled and often organize the corresponding relation of the quantity comprised in water pump group to be controlled in Feature Mapping relation.
Alternatively, in the present embodiment, above-mentioned mappings characteristics relation obtains from characteristic curve of pump sampling as shown in Figure 2, wherein, can be, but not limited to sampling period determine according to different application scenarios.Alternatively, in the present embodiment, the Feature Mapping relation got will be saved, and for obtaining characteristic coefficient.Such as, above-mentioned Feature Mapping relation can be (Q
0, H
1, Hz1).
It should be noted that, above-mentioned pump performance characteristic curve and water pump unique match, after the water pump adopted in system is determined, pump performance characteristic curve also will be determined thereupon.
By the embodiment that the application provides, obtaining Feature Mapping relation by being sampled by characteristic curve of pump, to realize the parameter of water pump to read in system, being convenient to, when calculating operate power, the efficiency of calculating can be improved, and then realizing the Energy Saving Control to water pump.
As the optional scheme of one, often organize according to water lift of pump acquisition to be controlled the frequency of okperation that in water pump group to be controlled, water pump to be controlled is corresponding and comprise:
S1, according to Feature Mapping relation searching work frequency.
Be described shown in concrete composition graphs 2, such as, suppose that air-conditioning system lift is H
1, then can to obtain and in the mapping relations of preserving, lift is H
1corresponding relation, to obtain a frequency of okperation to three water pumps.Such as, according to lift H
1search and can obtain: during a water pump operation, the pump capacity of water pump is Q
0, the frequency of okperation of water pump is Hz1; During two water pump operations, the pump capacity of every platform water pump is Q
0/ 2, the frequency of okperation of water pump is Hz2; During three water pump operations, the pump capacity of water pump is Q
0/ 3, the frequency of okperation of water pump is Hz3.
By the embodiment that the application provides, by obtaining frequency of okperation in the Feature Mapping relation of water pump to be controlled, achieving and reading parameters of pump fast by system, so that the operate power of water pump in computing system, and then realize the Energy Saving Control to water pump.
Embodiment 2
According to the embodiment of the present invention, additionally provide a kind of pump control unit for implementing above-mentioned water pump control method, as shown in Figure 4, this device comprises:
1) detection unit 402, for detecting the Operational Limits of every platform water pump to be controlled in water pump set, wherein, pump capacity and the lift of water pump to be controlled is at least comprised in Operational Limits, water pump set comprises: many groups water pump group to be controlled, often organizes the water pump to be controlled that water pump group to be controlled comprises varying number;
2) the first acquiring unit 404, for according to the pump capacity of water pump to be controlled and lift, obtains the operate power often organizing water pump group to be controlled;
3) control unit 406, for selecting the object run power meeting predetermined condition from multiple operate power, runs the one group to be controlled water pump group corresponding with object run power.
Alternatively, in the present embodiment, above-mentioned pump control unit can be, but not limited to be applied in the variable frequency pump in air-conditioning system, such as, suppose that the variable frequency pump in central air-conditioning system has M platform, wherein, M platform variable frequency pump can be combined into many groups water pump group to be controlled by varying number, the pump capacity of every platform water pump is equal, detect pump capacity and the lift of every platform variable frequency pump in above-mentioned water pump set, and the operate power often organizing water pump group to be controlled is obtained according to above-mentioned data acquisition, so that select the object run power meeting predetermined condition from multiple operate power, run the one group to be controlled water pump group corresponding with described object run power, thus realization reduces the operation energy consumption of variable frequency pump to realize the Energy Saving Control to variable frequency pump.Above-mentioned citing is a kind of example, and the present embodiment does not do any restriction to this.
Alternatively, in the present embodiment, above-mentioned Operational Limits can include but not limited to: pump capacity, frequency of okperation, the lift of water pump current time to be controlled.Wherein, above-mentioned pump capacity can include but not limited to the pump capacity of every platform water pump, and above-mentioned lift can be, but not limited to flow through with unit weight fluid the energy that pump obtains and represents, also can represent with the maximum range of the liquid flowing through water pump.
Alternatively, in the present embodiment, many groups of water pump groups to be controlled in above-mentioned water pump set can include but not limited to the quantity traveling through whole water pump.Such as, totally 5, whole water pump, then many groups of water pump groups to be controlled in above-mentioned water pump set will comprise: first group, comprising 1 water pump; Second group, comprising 2 water pumps; 3rd group, comprising 3 water pumps; 4th group, comprising 4 water pumps; 5th group, comprising 5 water pumps.By obtaining the operate power of water pump group to be controlled respectively, so that select the water pump group to be controlled corresponding to least energy consumption, and controlling this water pump group operation to be controlled, realizing the Energy Saving Control to water pump.
Alternatively, in the present embodiment, the operate power that the above-mentioned pump capacity according to water pump to be controlled and lift obtain the water pump to be controlled of water pump group to be controlled can include but not limited to: obtain according to above-mentioned lift and often organize water pump group to be controlled for calculating the characteristic coefficient of operate power, utilizes the pump capacity of above-mentioned characteristic coefficient and correspondence to calculate operate power.Wherein, above-mentioned characteristic coefficient can include but not limited to utilize the calculation of parameter in Feature Mapping relation to obtain, wherein, the parameter in above-mentioned Feature Mapping relation at least comprises the frequency of okperation of water pump to be controlled, the quantity often organizing water pump group to be controlled and lift, further, above-mentioned Feature Mapping relation can be, but not limited to acquire according to the characteristic curve of pump of water pump to be controlled, characteristic curve of pump can as shown in Figure 2, and wherein, abscissa represents pump capacity, by Q mark, Q
0represent a pump capacity during water pump operation, Q
0the pump capacity of every platform water pump during/2 expression two water pump operations, Q
0the pump capacity of every platform water pump during/3 expression three water pump operations; Y coordinate represents lift, identifies with H; In Fig. 2, same curves represents the relation of pump capacity and lift under same frequency of okperation, and wherein frequency of okperation Hz identifies.
Alternatively, in the present embodiment, above-mentioned select from operate power the mode meeting the object run power of predetermined condition can include but not limited to following one of at least:
1) size of more multiple operate power and predetermined threshold, and judge in multiple operate power, whether to comprise the object run power being less than or equal to predetermined threshold;
2) multiple operate power is sorted, multiple operate power is sorted.
It should be noted that, above-mentioned predetermined threshold can be, but not limited to arrange according to different application scenarios, further, when the operate power being less than or equal to predetermined threshold comprises multiple, can be, but not limited to reset the Second Threshold being less than or equal to above-mentioned predetermined threshold, the operate power being less than or equal to predetermined threshold is compared with Second Threshold again, until select target operate power.Further, determine to need to start the water pump group to be controlled controlled, and then realize the object of energy consumption of reduction system.
Particularly, the start-up course of above-mentioned water pump can be as follows: when supposing that to adjust control be two water pump operations by water pump operation, the frequency of water pump temporarily will keep Hz1, and move along on curve corresponding to Hz1 as shown in Figure 2, lift becomes H
2, after a period of time, owing to being subject to lift H
1restriction, the frequency of water pump will drop to Hz2, thus realize adjusting the Energy Saving Control of water pump.
By the embodiment that the application provides, by detecting the current Operational Limits flowing through every platform water pump to be controlled in water pump set, at least obtain pump capacity and the lift of water pump to be controlled, wherein, water pump set comprises many groups water pump to be controlled, often organize the water pump to be controlled that water pump group to be controlled comprises varying number, and utilize the calculating of above-mentioned Operational Limits often to organize operate power corresponding to water pump group to be controlled, so that select the object run power meeting predetermined condition, and then run the one group to be controlled water pump group corresponding with object run power, thus overcome the larger problem of energy consumption that the control gear that just starts another water pump in prior art after water pump is fully loaded with causes, realize selecting the most energy-conservation water pump control program by the present embodiment, run according to the water pump quantity after adjustment, to reach the energy consumption of water pump in reduction system, and make the maximized effect of operational energy efficiency of whole joint air-conditioning system.
As the optional scheme of one, the first acquiring unit 404 comprises:
1) the first acquisition module, often organizes for obtaining according to water lift of pump to be controlled the frequency of okperation that in water pump group to be controlled, water pump to be controlled is corresponding;
2) the second acquisition module, for obtaining the characteristic coefficient matched with frequency of okperation, wherein, characteristic coefficient is for calculating operate power;
3) computing module, for utilizing the pump capacity of every platform water pump to be controlled in characteristic coefficient and the water pump group to be controlled corresponding with characteristic coefficient, calculate the operate power that water pump group to be controlled is corresponding, wherein, the total pump capacity often organizing water pump group to be controlled is constant.
Alternatively, in the present embodiment, above-mentioned characteristic coefficient can include but not limited to utilize the calculation of parameter in Feature Mapping relation to obtain, wherein, parameter in above-mentioned Feature Mapping relation at least comprises the frequency of okperation of water pump to be controlled, the quantity often organizing water pump group to be controlled and lift, further, above-mentioned Feature Mapping relation can be, but not limited to acquire according to the characteristic curve of pump of water pump to be controlled.
Wherein, the above-mentioned mode obtaining characteristic coefficient in Feature Mapping relation that utilizes can include but not limited to: the frequency of okperation according to matching with characteristic coefficient obtains relevant parameter further from characteristic of correspondence mapping relations, as often organized quantity and the lift of water pump group to be controlled, calculate characteristic of correspondence coefficient according to above-mentioned parameter according to pre-defined algorithm.
Be described shown in concrete composition graphs 2, for the variable frequency pump of air-conditioning system, wherein, above-mentioned air-conditioning system comprises three variable frequency pumps, because in system, variable frequency pump is determined, then the lift of variable frequency pump also determines (the lift H such as, shown in Fig. 2 thereupon
1).When detecting the Operational Limits of variable frequency pump current time, suppose to only have a variable frequency pump in operation, wherein pump capacity is Q
0, lift is H
1the frequency of okperation often organizing water pump group to be controlled then can be obtained according to this lift, such as, the frequency of okperation of a variable frequency pump is Hz1, and the frequency of okperation of two every platforms of variable frequency pump is Hz2, and the frequency of okperation of three every platforms of variable frequency pump is Hz3, further, in Feature Mapping relation, obtain other parameters according to frequency of okperation, above-mentioned parameter is inputted predetermined software, and then calculate the characteristic coefficient matched with this frequency of okperation.Such as, frequency of okperation Hz1, calculating a corresponding stack features coefficient is Ap
1, Ap
2... Ap
n, frequency of okperation Hz2, a corresponding stack features coefficient is Aq
1, Aq
2... Aq
n, the stack features coefficient that frequency of okperation Hz3 is corresponding is Ar
1, Ar
2... Ar
n.
Further, utilize the pump capacity of every platform variable frequency pump in above-mentioned characteristic coefficient and the water pump group to be controlled corresponding with characteristic coefficient to calculate operate power corresponding to water pump group to be controlled.Wherein, calculation method can include but not limited to be obtained by following formulae discovery:
Wherein, above-mentioned A
ifor characteristic coefficient, i=0,1 ... n, n be greater than 0 real coefficient, Q is the pump capacity of every platform variable frequency pump in the water pump group to be controlled corresponding with characteristic coefficient.
By the embodiment that the application provides, obtain according to lift and often organize frequency of okperation corresponding to water pump group to be controlled, and then obtain the characteristic coefficient for calculating operate power according to frequency of okperation, the pump capacity of every platform water pump to be controlled in characteristic coefficient and the water pump group to be controlled corresponding with characteristic coefficient is utilized to calculate operate power, thus realize obtaining multiple operate powers corresponding to many groups water pump group to be controlled, show that consumed energy meets the water pump group to be controlled of the water pump of predetermined condition so that compare, and run this water pump group to be controlled, to realize the Energy Saving Control to water pump, improve the operational energy efficiency of system simultaneously.
As the optional scheme of one, computing module comprises:
1) calculating sub module, for by following formulae discovery operate power P:
Wherein, A
ifor the characteristic coefficient matched with frequency of okperation, i=0,1 ... n, n be greater than 0 real coefficient, Q is the pump capacity of the to be controlled water pump group every platform to be controlled water pump corresponding with characteristic coefficient.
Specifically be described in conjunction with following example, shown in composition graphs 2, for the variable frequency pump of air-conditioning system, wherein, above-mentioned air-conditioning system comprises three variable frequency pumps, because in system, variable frequency pump is determined, then the lift of variable frequency pump also determines (the lift H such as, shown in Fig. 2 thereupon
1).
In the present embodiment, required characteristic coefficient can with reference to above-mentioned example gained.When a variable frequency pump runs, frequency of okperation is Hz1, and pump capacity is Q
0, then operate power can obtain according to above-mentioned formula:
n=1; If when two water pumps run, according to lift H simultaneously
1known frequency of okperation is Hz2, and pump capacity is Q
0/ 2, then operate power can obtain according to above-mentioned formula:
if when three water pumps run, according to lift H simultaneously
1known frequency of okperation is Hz3, and pump capacity is Q
0/ 3, then operate power can obtain according to above-mentioned formula:
By the embodiment that the application provides, realize accurately calculating multiple operate powers corresponding to many groups water pump group to be controlled by above-mentioned formula, the object run power that power consumption meets predetermined condition is run so that select from multiple operate power, and then run the to be controlled water pump group corresponding with object run power, realize the effect of the energy consumption reducing water pump operation.
As the optional scheme of one, control unit 406 comprises:
1) multilevel iudge module, for the size of more multiple operate power and predetermined threshold, and judges whether comprise the object run power being less than or equal to predetermined threshold in multiple operate power;
2) the first control module, for when judging to comprise object run power, runs the one group to be controlled water pump group corresponding with object run power.
It should be noted that, above-mentioned predetermined threshold can be, but not limited to arrange according to different application scenarios, further, when the operate power being less than or equal to predetermined threshold comprises multiple, can be, but not limited to reset the Second Threshold being less than or equal to above-mentioned predetermined threshold, the operate power being less than or equal to predetermined threshold is compared with Second Threshold again, until select target operate power.Further, determine to need to start the water pump group to be controlled controlled, and then realize the object of energy consumption of reduction system.
Such as, that supposes to be less than or equal to predetermined threshold only has P
3, then control to start and P
3three corresponding water pump operations; And if be less than or equal to predetermined threshold have P
2, P
3, then Second Threshold and P is set
2, P
3if, P
3be less than or equal to threshold value, then control to start and P
3two corresponding water pump operations.
By the embodiment that the application provides, by organizing multiple operate power corresponding to water pump group to be controlled and predetermined threshold compares by with in water pump set more, thus judge in multiple operate power, whether to comprise the object run power being less than or equal to predetermined threshold, repeatedly obtaining object run power more afterwards, thus realize running according to the water pump group to be controlled corresponding with object run power, make water pump operation energy consumption minimized to reach, the maximized object of system cloud gray model efficiency.
As the optional scheme of one, control unit 406 comprises:
1) order module, for sorting to multiple operate power;
2) the second control module, for selecting minimum operate power as object run power, and runs the one group to be controlled water pump group corresponding with object run power.
Specifically to be described in conjunction with following example, to sort by the above-mentioned operate power calculated, suppose that the relation of above-mentioned operate power is P
1<P
2<P
3, then P is selected
3as object run power, P
3corresponding water pump group to be controlled three water pumps will be activated operation, thus realize the object of the energy consumption of reduction system.
By the embodiment that the application provides, by multiple operate powers corresponding for many groups that calculate water pump groups to be controlled are sorted, thus object run power is selected from multiple operate power, thus realize running water pump group to be controlled corresponding to this object run power, make water pump operation energy consumption minimized to reach, the maximized object of system cloud gray model efficiency.
As the optional scheme of one, said apparatus also comprises:
1) second acquisition unit, for before the Operational Limits detecting every platform water pump to be controlled in water pump set, obtain the Feature Mapping relation of water pump to be controlled, wherein, at least comprise the frequency of okperation of water pump to be controlled, water lift of pump to be controlled in Feature Mapping relation and often organize the corresponding relation of the quantity comprised in water pump group to be controlled.
Alternatively, in the present embodiment, above-mentioned mappings characteristics relation obtains from characteristic curve of pump sampling as shown in Figure 2, wherein, can be, but not limited to sampling period determine according to different application scenarios.Alternatively, in the present embodiment, the Feature Mapping relation got will be saved, and for obtaining characteristic coefficient.Such as, above-mentioned Feature Mapping relation can be (Q
0, H
1, Hz1).
It should be noted that, above-mentioned pump performance characteristic curve and water pump unique match, after the water pump adopted in system is determined, pump performance characteristic curve also will be determined thereupon.
By the embodiment that the application provides, obtaining Feature Mapping relation by being sampled by characteristic curve of pump, to realize the parameter of water pump to read in system, being convenient to, when calculating operate power, the efficiency of calculating can be improved, and then realizing the Energy Saving Control to water pump.
As the optional scheme of one, the first acquisition module comprises:
1) submodule is obtained, for according to Feature Mapping relation searching work frequency.
Be described shown in concrete composition graphs 2, such as, suppose that air-conditioning system lift is H
1, then can to obtain and in the mapping relations of preserving, lift is H
1corresponding relation, to obtain a frequency of okperation to three water pumps.Such as, according to lift H
1search and can obtain: during a water pump operation, the pump capacity of water pump is Q
0, the frequency of okperation of water pump is Hz1; During two water pump operations, the pump capacity of every platform water pump is Q
0/ 2, the frequency of okperation of water pump is Hz2; During three water pump operations, the pump capacity of water pump is Q
0/ 3, the frequency of okperation of water pump is Hz3.
By the embodiment that the application provides, by obtaining frequency of okperation in the Feature Mapping relation of water pump to be controlled, achieving and reading parameters of pump fast by system, so that the operate power of water pump in computing system, and then realize the Energy Saving Control to water pump.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a water pump control method, is characterized in that, comprising:
Detect the Operational Limits of every platform water pump to be controlled in water pump set, wherein, at least comprise pump capacity and the lift of described water pump to be controlled in described Operational Limits, described water pump set comprises: many groups water pump group to be controlled, often organizes the water pump to be controlled that water pump group to be controlled comprises varying number;
According to described pump capacity and the described lift of described water pump to be controlled, obtain the described operate power often organizing water pump group to be controlled;
From multiple operate power, select the object run power meeting predetermined condition, run water pump group to be controlled described in a group corresponding with described object run power.
2. method according to claim 1, is characterized in that, the described described pump capacity according to described water pump to be controlled and described lift, obtains the described operate power often organizing water pump group to be controlled and comprises:
The frequency of okperation that described in water pump group to be controlled, water pump to be controlled is corresponding is often organized according to the described lift acquisition of described water pump to be controlled is described;
Obtain the characteristic coefficient matched with described frequency of okperation, wherein, described characteristic coefficient is for calculating described operate power;
Utilize the pump capacity of water pump to be controlled described in every platform in described characteristic coefficient and the water pump group described to be controlled corresponding with described characteristic coefficient, calculate the described operate power that described water pump group to be controlled is corresponding, wherein, the described total pump capacity often organizing water pump group to be controlled is constant.
3. method according to claim 2, it is characterized in that, the described pump capacity utilizing water pump to be controlled described in every platform in described characteristic coefficient and the water pump group described to be controlled corresponding with described characteristic coefficient, the described operate power calculating described water pump group to be controlled corresponding comprises:
By operate power P described in following formulae discovery:
Wherein, described A
ifor the characteristic coefficient matched with described frequency of okperation, described i=0,1 ... n, described n be greater than 0 real coefficient, described Q is the pump capacity of water pump to be controlled described in platform every in the water pump group described to be controlled corresponding with described characteristic coefficient.
4. method according to claim 2, is characterized in that, describedly from multiple operate power, selects to meet the object run power of predetermined condition, runs water pump group to be controlled described in a group corresponding with described object run power and comprises:
The size of more described multiple operate power and predetermined threshold, and judge in described multiple operate power, whether to comprise the described object run power being less than or equal to described predetermined threshold;
Comprise described object run power if judge, then run water pump group to be controlled described in a group corresponding with described object run power.
5. method according to claim 2, is characterized in that, describedly from multiple operate power, selects to meet the object run power of predetermined condition, runs water pump group to be controlled described in a group corresponding with described object run power and comprises:
Described multiple operate power is sorted;
Select minimum described operate power as described object run power, and run water pump group to be controlled described in a group corresponding with described object run power.
6. method according to claim 2, is characterized in that, in the set of described detection water pump every platform water pump to be controlled Operational Limits before, also comprise:
Obtain the Feature Mapping relation of described water pump to be controlled, wherein, at least comprise the described frequency of okperation of described water pump to be controlled, the described lift of described water pump to be controlled in described Feature Mapping relation and often organize the corresponding relation of the quantity comprised in described water pump group to be controlled.
7. method according to claim 6, is characterized in that, the described described lift according to described water pump to be controlled obtains describedly often to be organized the frequency of okperation that described in water pump group to be controlled, water pump to be controlled is corresponding and comprise:
Described frequency of okperation is searched according to described Feature Mapping relation.
8. a pump control unit, is characterized in that, comprising:
Detection unit, for detecting the Operational Limits of every platform water pump to be controlled in water pump set, wherein, pump capacity and the lift of described water pump to be controlled is at least comprised in described Operational Limits, described water pump set comprises: many groups water pump group to be controlled, often organizes the water pump to be controlled that water pump group to be controlled comprises varying number;
First acquiring unit, for according to the described pump capacity of described water pump to be controlled and described lift, obtains the described operate power often organizing water pump group to be controlled;
Control unit, for selecting the object run power meeting predetermined condition from multiple operate power, runs water pump group to be controlled described in a group corresponding with described object run power.
9. device according to claim 8, is characterized in that, described first acquiring unit comprises:
First acquisition module, for often organizing according to the described lift acquisition of described water pump to be controlled is described the frequency of okperation that described in water pump group to be controlled, water pump to be controlled is corresponding;
Second acquisition module, for obtaining the characteristic coefficient matched with described frequency of okperation, wherein, described characteristic coefficient is for calculating described operate power;
Computing module, for utilizing the pump capacity of water pump to be controlled described in every platform in described characteristic coefficient and the water pump group described to be controlled corresponding with described characteristic coefficient, calculate the described operate power that described water pump group to be controlled is corresponding, wherein, the described total pump capacity often organizing water pump group to be controlled is constant.
10. device according to claim 9, is characterized in that, described computing module comprises:
Calculating sub module, for by operate power P described in following formulae discovery:
Wherein, described A
ifor the characteristic coefficient matched with described frequency of okperation, described i=0,1 ... n, described n be greater than 0 real coefficient, described Q is the pump capacity of water pump to be controlled described in platform every in the water pump group described to be controlled corresponding with described characteristic coefficient.
11. devices according to claim 9, is characterized in that, described control unit comprises:
Multilevel iudge module, for the size of more multiple operate power and predetermined threshold, and judges whether comprise the described object run power being less than or equal to described predetermined threshold in described multiple operate power;
First control module, for when judging to comprise described object run power, runs water pump group to be controlled described in a group corresponding with described object run power.
12. devices according to claim 9, is characterized in that, described control unit comprises:
Order module, for sorting to described multiple operate power;
Second control module, for selecting minimum described operate power as described object run power, and runs water pump group to be controlled described in a group corresponding with described object run power.
13. devices according to claim 9, is characterized in that, described device also comprises:
Second acquisition unit, for before the Operational Limits detecting every platform water pump to be controlled in water pump set, obtain the Feature Mapping relation of described water pump to be controlled, wherein, at least comprise the described frequency of okperation of described water pump to be controlled, the described lift of described water pump to be controlled in described Feature Mapping relation and often organize the corresponding relation of the quantity comprised in described water pump group to be controlled.
14. devices according to claim 13, is characterized in that, described first acquisition module comprises:
Obtain submodule, for searching described frequency of okperation according to described Feature Mapping relation.
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