CN106438313A - Photovoltaic water pump system and water yield optimization method - Google Patents
Photovoltaic water pump system and water yield optimization method Download PDFInfo
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- CN106438313A CN106438313A CN201610850779.5A CN201610850779A CN106438313A CN 106438313 A CN106438313 A CN 106438313A CN 201610850779 A CN201610850779 A CN 201610850779A CN 106438313 A CN106438313 A CN 106438313A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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Abstract
The invention relates to a photovoltaic water pump system and a water pump switching method. The photovoltaic water pump system comprises a photovoltaic component, a water pump module, a power output module, a control module, a water pump switching module and a power output module, wherein the photovoltaic component is used for generating electricity; the water pump module comprises a plurality of water pumps which are correspondingly matched with different sunlight intensity regions, and the water pumps are together connected with a water discharging pipeline; the power output module is connected with the photovoltaic component and the water pump module and is used for receiving and outputting electric volume transmitted by the photovoltaic component to the water pump module; the control module is used for acquiring the corresponding sunlight intensity region according to the flow data of the water discharging pipeline and the output power data of the power output module, generating a control signal according to the acquired sunlight intensity region and transmitting the control signal to the water pump switching module; and the water pump switching module is connected between the water pump module and the power output module and is used for switching the corresponding water pump in the water pump module and connecting the corresponding water pump with the power output module according to the received control signal. The photovoltaic water pump system provided by the invention can improve the utilization efficiency of sunlight energy and increase the water yield of the photovoltaic water pump system.
Description
Technical field
The present invention relates to photovoltaic application field, more particularly to a kind of photovoltaic water pump system and water yield optimization method.
Background technology
The popularization and application of photovoltaic water pump system, solve irrigation, the domestic animal of the areas without electricity such as desert, island, remote mountain areas
And the problems such as Drinking Water for Residents, and have great importance to improving the ecological environment.
Conventional photovoltaic water pump system includes the equipment such as photovoltaic module and single water pump, and water pump corresponds to specific
" lift-flow " curve, lift refers to the height that water pump can pump up water, and flow refers to the body that water pump conveys water within the unit interval
Long-pending.In fair weather, the change curve of intensity of sunshine is close to sine curve, when sunshine low intensity is in certain threshold value, meeting
The power leading to photovoltaic module output reaches power required for lift less than water pump, and now water pump then cannot water outlet.Substantially no
Method meets water consumption greatly, needs the application scenario persistently supplied water.If the weaker weather of the sunshine such as cloudy, whole photovoltaic water pump
System can water yield few even cannot water outlet, reduce the utilization ratio of counterglow energy.
Generally can consider that installing accumulator in photovoltaic water pump system powers for water pump jointly, but accumulator is installed and needs to increase
Plus certain cost, and increased later maintenance and the expense changed, therefore, current photovoltaic water pump system is seldom applied.
Content of the invention
Based on this it is necessary to provide a kind of photovoltaic water pump system and water yield optimization method, improve the profit of counterglow energy
Use efficiency.
A kind of photovoltaic water pump system, including：
Water pump module, comprises multiple water pumps of respectively Corresponding matching interval from different intensity of sunshines, the plurality of water pump
There is the outlet conduit connecting altogether；
The power output module being connected with photovoltaic module and water pump module, for receiving and exporting described photovoltaic module conveying
Electricity to described water pump module；
Control module, for the output number of the data on flows according to described outlet conduit and described power output module
According to obtaining, corresponding intensity of sunshine is interval, and is transferred to water pump switching mould according to the interval control signal that generates of the intensity of sunshine obtaining
Block；
It is connected to the water pump handover module between described water pump module and power output module, for according to the control receiving
Signal switches corresponding water pump in described water pump module and connects described power output module.
Wherein in an embodiment, also include：
It is arranged at the flow collection module of described outlet conduit, described flow collection module connects described control module, uses
In gathering the data on flows of described outlet conduit and be transferred to described control module.
Wherein in an embodiment, also include：
The power collection module being connected with described power output module and control module, for gathering described power output mould
The output data of block is simultaneously transferred to described control module.
Wherein in an embodiment, described control module includes：
Obtain a unit, for obtaining the data on flows of described outlet conduit and the output of described power output module
Data；
Processing unit, for processing to the described data on flows obtaining a unit acquisition and output data；
Determining unit, corresponding for being determined according to the data on flows after described processing unit processes and output data
Intensity of sunshine is interval；
Obtain Unit two, for obtaining the water pump of the intensity of sunshine interval Corresponding matching determining with described determining unit；
Control signal signal generating unit, for generating the described water pump obtaining the Corresponding matching that Unit two obtain and described work(
The control signal that rate output module connects.
Wherein in an embodiment, described different intensity of sunshine interval coupling has default flow rate zone and power area
Between；
Described determining unit includes：
Flow determining unit, for determining the default flow area that the data on flows after described processing unit processes is located
Between；
Power determining unit, for determining the default power that the output data after described processing unit processes is located
Interval；
Judging unit, flow rate zone and described power determining unit for being determined according to described flow determining unit determine
Power interval judge that the intensity of sunshine of coupling is interval.
Wherein in an embodiment, described flow rate zone is continuum, and described processing unit is included at data on flows
Reason unit, described data on flows processing unit includes：
Marginal value adds unit, for deteriorating to less than two continuous flows when the described data on flows obtaining a unit acquisition
During the marginal value in interval, described marginal value is added default change value as new marginal value；
Marginal value subtracts unit, for rising to more than two continuous flows when the described data on flows obtaining a unit acquisition
During the marginal value in interval, described marginal value is deducted default change value as new marginal value.
Wherein in an embodiment, described flow rate zone is continuum；
Described processing unit includes data on flows processing unit, and described data on flows processing unit includes：
Flow adds unit, for deteriorating to less than Liang Ge continuous flow area when the described data on flows obtaining a unit acquisition
Between marginal value when, then using obtain data on flows add default flow value as new data on flows；
Flow subtracts unit, for rising to more than Liang Ge continuous flow area when the described data on flows obtaining a unit acquisition
Between marginal value when, then the data on flows of acquisition is deducted default flow value as new data on flows.
In the above photovoltaic water pump system, water pump module includes respectively Corresponding matching interval from different intensity of sunshines
Multiple water pumps, it is right that control module can obtain according to the data on flows of outlet conduit and the output data of power output module
The intensity of sunshine answered is interval, and generates control signal, and water pump handover module can switch and the day obtaining according to this control signal
Water pump according to intensity interval coupling is operated, thus under different intensities of illumination, water pump module all can work, in lifting
Improve the water yield of photovoltaic water pump system while the utilization ratio of counterglow energy.
A kind of water yield optimization method, based on above-described photovoltaic water pump system, described water yield optimization method includes：
The collection data on flows of outlet conduit and the output data of power output module；
The data on flows and output data of collection is processed；
Interval according to the data on flows after processing and the corresponding intensity of sunshine of output data acquisition；
According to the intensity of sunshine corresponding water pump of interval switching.
Wherein in an embodiment, the interval coupling of described intensity of sunshine has default flow rate zone and power interval；
Described include according to the data on flows after processing and the corresponding intensity of sunshine of output data acquisition are interval：
Judgement process after data on flows be located default flow rate zone and process after output data be located
Power interval；
Determine that according to the flow rate zone judged and power interval the intensity of sunshine of coupling is interval.
Wherein in an embodiment, described flow rate zone is continuum, at the described data on flows to collection
Reason includes：
When the data on flows of collection deteriorates to less than the interval marginal value of two continuous flows, described marginal value is added
Default change value is as new marginal value；
When the data on flows of collection rises to more than the interval marginal value of two continuous flows, described marginal value is deducted
Default change value is as new marginal value.
Wherein in an embodiment, described flow rate zone is continuum, at the described data on flows to collection
Reason includes：
When the data on flows of collection deteriorates to less than the marginal value of two continuous flow rate zone, then the flow that will obtain
Data adds default flow value as new data on flows；
When the data on flows of collection rises to more than the interval marginal value of two continuous flows, then the flow number that will obtain
According to deducting default flow value as new data on flows.
Wherein in an embodiment, described switch corresponding water pump and include according to intensity of sunshine is interval：
According to the described intensity of sunshine corresponding control signal of interval generation；
Corresponding water pump is switched according to described control signal.
In the above water yield optimization method, the data on flows according to outlet conduit and the output work of power output module
Rate data can obtain corresponding intensity of sunshine interval, can switch corresponding pump working according to intensity of sunshine interval, thus
Under different intensities of illumination, corresponding water pump all can work, thus lifting the utilization ratio of counterglow energy and improving light
The water yield of FUSHUI pumping system.
Brief description
Fig. 1 is the structure connection diagram of the photovoltaic water pump system of an embodiment；
Fig. 2 is the circuit connection diagram of the photovoltaic water pump system of an embodiment；
Fig. 3 is the structural representation of control module 140 in Fig. 1；
Fig. 4 is the schematic flow sheet of the water yield optimization method of an embodiment.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
As depicted in figs. 1 and 2, the photovoltaic water pump system of an embodiment includes, for the photovoltaic module 110 generating electricity, also wrapping
Include：
Water pump module 150, comprises multiple water pumps of respectively Corresponding matching interval from different intensity of sunshines, and multiple water pumps have
The outlet conduit connecting altogether；
The power output module 120 being connected with photovoltaic module 110 and water pump module 150, for receiving and exporting photovoltaic group
The electricity of part 110 conveying is to water pump module 150；
Control module 140, for the output data of the data on flows according to outlet conduit and power output module 120
Obtain corresponding intensity of sunshine interval, and water pump handover module is transferred to according to the interval control signal that generates of the intensity of sunshine obtaining
130；
It is connected to the water pump handover module 130 between water pump module 150 and power output module 120, for according to reception
Control signal switching water pump module 150 in corresponding water pump connect power output module 120.
In the above photovoltaic water pump system, water pump module includes respectively Corresponding matching interval from different intensity of sunshines
Multiple water pumps, it is right that control module can obtain according to the data on flows of outlet conduit and the output data of power output module
The intensity of sunshine answered is interval, and generates control signal, and water pump handover module can switch and the day obtaining according to this control signal
Water pump according to intensity interval coupling is operated, thus under different intensities of illumination, water pump module all can work, in lifting
Improve the water yield of photovoltaic water pump system while the utilization ratio of counterglow energy.
In the present embodiment, in outlet conduit, it is provided with flow collection module, flow collection module link control module 140,
For gathering the data on flows of outlet conduit and being transferred to control module 140.It will be evident that the data on flows of the present embodiment is water outlet
The water yield of pipeline, is the volume that water pump conveys water within the unit interval.
The present embodiment is provided with the power collection module being connected with power output module 120 and control module 140, is used for adopting
The output data of collection power output module 120 is simultaneously transferred to control module 140.Wherein, power output module 120 is MPPT
(maximal power tracing control) power output module, including DC controller or alternating-current controller etc..
In the present embodiment, multiple water pumps that water pump module 150 includes can be direct current or exchange water pump.Each water pump is respectively
A corresponding intensity of sunshine interval, that is, " lift-flow " curve of each water pump is respectively under corresponding intensity of sunshine interval
Curve after optimization.
As shown in figure 3, control module 140 includes：
Obtain a unit 141, for obtaining the data on flows of outlet conduit and the output data of power output module；
Processing unit 142, for processing to the data on flows and output data that obtain a unit 141 acquisition；
Determining unit 143, determines corresponding for the data on flows after being processed according to processing unit 142 and output data
Intensity of sunshine interval；
Obtain two units 144, for obtaining the water pump of the intensity of sunshine interval Corresponding matching determining with determining unit 143；
Control signal signal generating unit 145, will obtain water pump and the power of the Corresponding matching that two units 144 obtain for generating
The control signal that output module connects.
In the present embodiment, the interval coupling of different intensity of sunshines has default flow rate zone and power interval, according to default
Flow rate zone and power interval can determine that corresponding intensity of sunshine is interval.Specifically, determining unit 143 includes：
Flow determining unit, for determining the default flow rate zone that the data on flows after processing unit processes is located；
Power determining unit, for determining the default power area that the output data after processing unit processes is located
Between；
Judging unit, the power area determining for the flow rate zone that determined according to flow determining unit and power determining unit
Between judge that the intensity of sunshine mating is interval.
In the present embodiment, flow rate zone is continuum.When data on flows changes at the marginal value of two continuums
When, data on flows may change repeatedly, be more than at short notice for a moment or be less than marginal value for a moment, is easily caused switching water repeatedly
Pump, reduces water yield, and acceleration equipment weares and teares.
As a kind of implementation of the present embodiment, can be by avoiding repeatedly switching water pump to the change of marginal value.Tool
Body, in the present embodiment, processing unit includes data on flows processing unit, and data on flows processing unit includes marginal value and adds unit
Subtract unit with marginal value.
Marginal value add unit for when obtain one unit acquisition data on flows deteriorate to less than two continuous flow intervals
Marginal value when, using marginal value add default change value as new marginal value.
When data on flows declines, during if less than marginal value, because the flow rate zone that data on flows is located becomes
Change, can lead to switch water pump, now, marginal value is added default change value as after new marginal value, due to new critical
Value is larger, therefore, when data on flows changes near original marginal value, when only it is more than new marginal value, just can lead
Cause switching water pump, switching water pump repeatedly can be prevented effectively from.
Marginal value subtract unit for when obtain one unit acquisition data on flows rise to more than two continuous flow intervals
Marginal value when, marginal value is deducted default change value as new marginal value.
When data on flows rises, during if it greater than marginal value, because the flow rate zone that data on flows is located becomes
Change, can lead to switch water pump, now, marginal value be deducted default change value as after new marginal value, due to new critical
Value is less, therefore, when data on flows changes near original marginal value, when only it is less than new marginal value, just can lead
Cause switching water pump, switching water pump repeatedly can be prevented effectively from.
As another kind of implementation of the present embodiment, can also avoid repeatedly switching by data on flows is carried out with process
Water pump.Specifically, processing unit includes data on flows processing unit, and data on flows processing unit includes flow and adds unit and flow
Subtract unit.
Flow adds unit for when obtaining the data on flows that a unit obtains and deteriorate to less than two continuous flows intervals
During marginal value, then the data on flows obtaining is added default flow value as new data on flows.
When data on flows deteriorates to less than the interval marginal value of two continuous flows, the data on flows of acquisition can be added
Upper default flow value forms new data on flows, when data on flows declines, as long as new data on flows is more than marginal value, then
The data on flows obtaining is still within same flow rate zone, and therefore, when data on flows declines, default flow value can conduct
The hysteresis of sluggish water pump switching is interval, prevents from repeatedly switching water pump.
Flow subtracts unit for when obtaining the data on flows that a unit obtains and rise to more than two continuous flows intervals
During marginal value, then the data on flows of acquisition is deducted default flow value as new data on flows.
When data on flows rises to more than the interval marginal value of two continuous flows, data on flows can be deducted default
Flow value form new data on flows, as long as new data on flows, still less than marginal value, when data on flows rises, then obtains
The data on flows taking is still within same flow rate zone, and therefore, when data on flows rises, default flow value can be used as slow
The dead band that stagnant water yield optimizes, prevents from repeatedly switching water pump.
Below by way of implementing, the present embodiment is described further.As shown in Fig. 2 water pump module 150 is provided with three
Individual water pump, respectively water pump 1, water pump 2 and water pump 3, and three water pumps share an outlet conduit.Three water pumps correspond to not respectively
Same intensity of sunshine is interval, flow rate zone and power interval that different intensity of sunshine intervals is mated respectively.Water pump handover module
130 are provided with the switch controlling this three water pumps respectively.Photovoltaic module 110 connects power output module 120.Set in outlet conduit
It is equipped with flow collection module, power output module 120 is connected with power collection module.
When the present embodiment photovoltaic water pump system operationally, flow collection module gather outlet conduit data on flows,
Power collection module gathers the output data of power output module 120, and control module 140 receives data on flows and output
Processed after power data, and judged the work(that the flow rate zone at data on flows place after process and output data are located
Rate is interval, can determine that corresponding intensity of sunshine is interval according to the flow rate zone judged and power interval, control module 140 is raw
Become corresponding control signal, this control signal is used for after being received by water pump handover module 130 will be interval for the intensity of sunshine determining
Corresponding water pump is connected with power output module 120.
In the present embodiment, by three water pumps 1, water pump 2 and water pump 3 respectively correspond to low, in, strong third gear intensity of sunshine, this reality
The intensity of sunshine interval applying example provides as follows：
Low intensity of sunshine S ∈ [0～300W/m2)；
Middle intensity of sunshine S ∈ [300～700W/m2)；
High intensity of sunshine S ∈ [700～1000W/m2].
The flow rate zone mating and power interval are as follows with intensity of sunshine interval：
Power interval：[0, P1), [P1, P2), [P2, Pmax)；
Flow rate zone：[0, Q1), [Q1, Q2), [Q2, Qmax).
For data on flows Q and output data P it is stipulated that as follows：
Work as P<P1, and Q<During Q1, corresponding low intensity of sunshine；
Work as P1<=P<P2, and Q1<=Q<During Q2, intensity of sunshine in corresponding to；
Work as P>P2, and Q>During Q2, corresponding high intensity of sunshine.
In this enforcement, intensity of sunshine interval, flow rate zone, power interval are preferably all continuum, and three of the above is interval
The concrete adjustment of data can be carried out according to practical application scene, it would however also be possible to employ discontinuous interval, or one of them or two
Individual employing is continuously or discontinuously interval.
When data on flows Q and output data P are unsatisfactory for above-mentioned regulation, then water pump is likely to be at stall and idle running
State, can be considered fault.
For flow rate zone [0, Q1), [Q1, Q2), [Q2, Qmax).When intensity of sunshine meets certain condition, can lead to
Data on flows Q changes up and down in two continuously interval critical points, and such as Q1 or Q2 so can lead to repeatedly switch water pump.
For example, data on flows Q may be more than Q1 for a moment, at this time, it may be necessary to switch to water pump 2, data on flows Q may be less than Q1 for a moment,
Need to switch make-up water pump 1, switching water pump can lead to water yield to reduce and increase equipment loss repeatedly again.
Therefore, a kind of settling mode of the present embodiment is, when data on flows Q deteriorates to less than the critical of two flow rate zone
During value, because the flow rate zone that data on flows Q is located changes, switch water pump, and marginal value is added default change value
△ Q is as new marginal value.When data on flows Q rises to the marginal value more than flow rate zone, it is located due to data on flows Q
Flow rate zone changes, and switches water pump, and marginal value is deducted default change value △ Q as new marginal value.
Specifically, when data on flows Q from interval [Q1, Q2) deteriorate to less than Q1 when, then have Q1 '=Q1+ △ Q.Due to stream
The interval that amount data Q is located be [0, Q1 '), therefore, can water pump 1 be switched to by water pump 2.Now, if data on flows Q is original
Marginal value Q1 near when changing, as long as data on flows Q is less than new marginal value Q1 ', then will not switch water pump, because new is faced
Dividing value Q1 ' is more than original marginal value Q1, can be prevented effectively from switching water pump repeatedly.In the present embodiment, △ Q can be 10%Q1,
More specifically numerical value or relational expression can also be arranged as required to.
When data on flows Q from interval [0, Q1) rise to more than Q1 when, then have Q1 '=Q1- △ Q.Due to due to flow number
According to the interval that Q is located be [Q1 ', Q2), therefore, can water pump 2 be switched to by water pump 1.Now, if data on flows Q is original
When changing near marginal value Q1, as long as data on flows Q is more than new marginal value Q1 ', then will not switch water pump, due to new critical
Value Q1 ' less than original marginal value Q1, switching water pump repeatedly can be prevented effectively from.
In the same manner, when data on flows Q from interval [Q2, Qmax) deteriorate to less than Q2 and during more than Q1, then have Q2 '=Q2+ △
Q.Due to the interval that data on flows Q is located be [Q1, Q2 '), therefore, can water pump 2 be switched to by water pump 3.Now, if flow number
When changing near original marginal value Q2 according to Q, as long as data on flows Q is less than new marginal value Q2 ', then will not switch water pump,
Due to new marginal value Q2 ' more than original marginal value Q2, switching water pump repeatedly can be prevented effectively from.
When data on flows Q from interval [Q1, Q2) rise to more than Q2 when, then have Q2 '=Q2- △ Q.Due to data on flows Q
The interval being located be [Q2 ', Qmax), therefore, can water pump 3 be switched to by water pump 2.Now, if data on flows Q is faced in original
When changing near dividing value Q2, as long as data on flows Q is more than new marginal value Q2 ', then will not switch water pump, due to new marginal value
Q2 ' is less than original marginal value Q2, can be prevented effectively from switching water pump repeatedly.
In another kind of settling mode in the present embodiment, when data on flows Q deteriorates to less than two continuous flows intervals
During marginal value, then data on flows Q obtaining is added default flow value △ Q as new data on flows.When in data on flows Q
When rising to more than the interval marginal value of two continuous flows, then data on flows Q of acquisition is deducted default flow value △ Q as
New data on flows.
Specifically, when data on flows Q from interval [Q1, Q2) deteriorate to less than Q1 when, then have Q=Q+ △ Q.If by Q+ △
The new data on flows that Q draws still interval [Q1, Q2), then do not need to switch water pump, otherwise, represent what data on flows Q declined
Larger, need to switch water pump, now can be switched to water pump 1 from water pump 2.It will be evident that △ Q can be used as the switching of sluggish water pump
Hysteresis is interval, prevents from repeatedly switching water pump.In the present embodiment, △ Q more can have for 10%Q1 it is also possible to be arranged as required to
The numerical value of body or relational expression.
When data on flows Q from interval [0, Q1) rise to more than Q1 when, then have Q=Q- △ Q.If drawn by Q- △ Q
New data on flows still interval [0, Q1), then do not need to switch water pump, otherwise, represent that data on flows Q rises larger, need
Water pump to be switched, can switch to water pump 2 from water pump 1.
In the same manner, when data on flows Q from interval [Q2, Qmax) deteriorate to less than Q2 and during more than Q1, then have Q=Q+ △ Q.As
The new data on flows that drawn by Q+ △ Q of fruit still interval [Q2, Qmax), then do not need to switch water pump, otherwise, represent flow number
Larger according to Q decline, need to switch water pump, now can be switched to water pump 2 from water pump 3.
When data on flows Q from interval [Q1, Q2) rise to more than Q2 when, then have Q=Q- △ Q.If drawn by Q- △ Q
New data on flows still interval [Q1, Q2), then do not need to switch water pump, otherwise, represent that data on flows Q rises larger,
Need to switch water pump, water pump 3 can be switched to from water pump 2.
Thus, under different intensities of illumination, corresponding pump working can be selected, improve water yield, lift counterglow
Resource utilization.
The water pump changing method of one embodiment is based on above-described photovoltaic water pump system, as shown in figure 4, water pump switching side
Method includes step S120 to step S180.
Step S120, the collection data on flows of outlet conduit and the output data of power output module；
Step S140, is processed to the data on flows and output data of collection；
Step S160, interval according to the data on flows after processing and the corresponding intensity of sunshine of output data acquisition；
Step S180, according to the intensity of sunshine corresponding water pump of interval switching.
In the above water pump changing method, the data on flows according to outlet conduit and the output of power output module
Data can obtain corresponding intensity of sunshine interval, can switch corresponding pump working according to intensity of sunshine interval, thus
Under different intensities of illumination, corresponding water pump all can work, thus lifting the utilization ratio of counterglow energy and improving photovoltaic
The water yield of water pump system.
In the present embodiment, the interval coupling of intensity of sunshine has default flow rate zone and power interval；Wherein, step S160 root
Include according to the data on flows after processing and the corresponding intensity of sunshine of output data acquisition are interval：
Judgement process after data on flows be located default flow rate zone and process after output data be located
Power interval；
Determine that according to the flow rate zone judged and power interval the intensity of sunshine of coupling is interval.
In wherein one embodiment, flow rate zone is continuum, and step S140 carries out processing bag to the data on flows of collection
Include：
When the data on flows of collection deteriorates to less than the interval marginal value of two continuous flows, described marginal value is added
Default change value is as new marginal value；
When the data on flows of collection rises to more than the interval marginal value of two continuous flows, described marginal value is deducted
Default change value is as new marginal value.
In another embodiment, flow rate zone is continuum, and step S140 carries out processing inclusion to the data on flows of collection：
When the data on flows of collection deteriorates to less than the marginal value of two continuous flow rate zone, then the flow that will obtain
Data adds default flow value as new data on flows；
When the data on flows of collection rises to more than the interval marginal value of two continuous flows, then the flow number that will obtain
According to deducting default flow value as new data on flows.
In the present embodiment, step S180 includes according to the intensity of sunshine corresponding water pump of interval switching：
According to the intensity of sunshine corresponding control signal of interval generation；
Corresponding water pump is switched according to control signal.
It is pointed out that implementing of the present embodiment water pump changing method is specifically interior based on above photovoltaic water pump system
Hold, referring in particular to the described content to photovoltaic water pump system for the present embodiment.
Each technical characteristic of above example can arbitrarily be combined, for making description succinct, not to above-described embodiment
In all possible combination of each technical characteristic be all described, as long as however, the combination of these technical characteristics does not have lance
Shield, is all considered to be the scope of this specification record.
Above example only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art,
On the premise of present inventive concept, some deformation can also be made and improve, these broadly fall into protection scope of the present invention.
Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (12)
1. a kind of photovoltaic water pump system is it is characterised in that include：
Water pump module, comprises multiple water pumps of respectively Corresponding matching interval from different intensity of sunshines, and the plurality of water pump has altogether
Outlet conduit even；
The power output module being connected with photovoltaic module and water pump module, for receiving and exporting the work(of described photovoltaic module conveying
Rate is to described water pump module；
Control module, the output data for the data on flows according to described outlet conduit and described power output module obtains
Take corresponding intensity of sunshine interval, and water pump handover module is transferred to according to the interval control signal that generates of the intensity of sunshine obtaining；
It is connected to the water pump handover module between described water pump module and power output module, for according to the control signal receiving
Switch corresponding water pump in described water pump module and connect described power output module.
2. photovoltaic water pump system according to claim 1 is it is characterised in that also include：
It is arranged at the flow collection module of described outlet conduit, described flow collection module connects described control module, is used for adopting
Collect the data on flows of described outlet conduit and be transferred to described control module.
3. photovoltaic water pump system according to claim 1 is it is characterised in that also include：
The power collection module being connected with described power output module and control module, for gathering described power output module
Output data is simultaneously transferred to described control module.
4. the photovoltaic water pump system according to any one of claim 1-3 is it is characterised in that described control module includes：
Obtain a unit, for obtaining the data on flows of described outlet conduit and the output number of described power output module
According to；
Processing unit, for processing to the described data on flows obtaining a unit acquisition and output data；
Determining unit, for determining corresponding sunshine according to the data on flows after described processing unit processes and output data
Intensity interval；
Obtain Unit two, for obtaining the water pump of the intensity of sunshine interval Corresponding matching determining with described determining unit；
Control signal signal generating unit, will be defeated with described power for the water pump of the described Corresponding matching obtaining two units acquisitions for generating
Go out the control signal of module connection.
5. photovoltaic water pump system according to claim 4 is it is characterised in that the interval coupling of described different intensity of sunshine has
Default flow rate zone and power interval；
Described determining unit includes：
Flow determining unit, for determining the default flow rate zone that the data on flows after described processing unit processes is located；
Power determining unit, for determining the default power area that the output data after described processing unit processes is located
Between；
Judging unit, the work(determining for the flow rate zone that determined according to described flow determining unit and described power determining unit
The intensity of sunshine of rate interval judgement coupling is interval.
6. photovoltaic water pump system according to claim 5 is it is characterised in that described flow rate zone is continuum, described
Processing unit includes data on flows processing unit, and described data on flows processing unit includes：
Marginal value adds unit, for deteriorating to less than two continuous flow intervals when the described data on flows obtaining a unit acquisition
Marginal value when, using described marginal value add default change value as new marginal value；
Marginal value subtracts unit, for rising to more than two continuous flow intervals when the described data on flows obtaining a unit acquisition
Marginal value when, described marginal value is deducted default change value as new marginal value.
7. photovoltaic water pump system according to claim 5 is it is characterised in that described flow rate zone is continuum；
Described processing unit includes data on flows processing unit, and described data on flows processing unit includes：
Flow adds unit, for deteriorating to less than two continuous flows intervals when the described data on flows obtaining a unit acquisition
During marginal value, then the data on flows obtaining is added default flow value as new data on flows；
Flow subtracts unit, for rising to more than two continuous flows intervals when the described data on flows obtaining a unit acquisition
During marginal value, then the data on flows of acquisition is deducted default flow value as new data on flows.
8. a kind of water yield optimization method is it is characterised in that based on the photovoltaic water pump system described in any one of claim 1-7,
Described water yield optimization method includes：
The collection data on flows of outlet conduit and the output data of power output module；
The data on flows and output data of collection is processed；
Interval according to the data on flows after processing and the corresponding intensity of sunshine of output data acquisition；
According to the intensity of sunshine corresponding water pump of interval switching.
9. water yield optimization method according to claim 8 it is characterised in that the interval coupling of described intensity of sunshine have default
Flow rate zone and power interval；
Described include according to the data on flows after processing and the corresponding intensity of sunshine of output data acquisition are interval：
The default flow rate zone at data on flows place after judgement process and the power at the output data place after process
Interval；
Determine that according to the flow rate zone judged and power interval the intensity of sunshine of coupling is interval.
10. water yield optimization method according to claim 9 it is characterised in that described flow rate zone be continuum, institute
State the data on flows to collection to carry out processing inclusion：
When the data on flows of collection deteriorates to less than the interval marginal value of two continuous flows, described marginal value is added default
Change value as new marginal value；
When the data on flows of collection rises to more than the interval marginal value of two continuous flows, described marginal value is deducted default
Change value as new marginal value.
11. water yield optimization methods according to claim 9 it is characterised in that described flow rate zone be continuum, institute
State the data on flows to collection to carry out processing inclusion：
When the data on flows of collection deteriorates to less than the marginal value of two continuous flow rate zone, then the data on flows that will obtain
Plus default flow value as new data on flows；
When the data on flows of collection rises to more than the interval marginal value of two continuous flows, then the data on flows of acquisition is subtracted
Remove default flow value as new data on flows.
12. water yield optimization methods according to claim 8 are it is characterised in that described switch according to intensity of sunshine interval
Corresponding water pump includes：
According to the described intensity of sunshine corresponding control signal of interval generation；
Corresponding water pump is switched according to described control signal.
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Effective date of registration: 20221109 Address after: 430079 No. 501, 5 / F, building 1, sage technology R & D center, Science Park, Wuhan University of technology, Donghu New Technology Development Zone, Wuhan, Hubei Patentee after: WUHAN GCL NEW ENERGY ELECTRIC POWER DESIGN Co.,Ltd. Address before: 215021 12F, Block B, Huihu Building, No. 10, Yueliangwan Road, Suzhou Industrial Park, Jiangsu Province Patentee before: GCL ELECTRIC POWER DESIGN RESEARCH CO.,LTD. |