CN110056044A - A kind of the photovoltaic multistage multiple pump and its control method of hillside fields water supply - Google Patents
A kind of the photovoltaic multistage multiple pump and its control method of hillside fields water supply Download PDFInfo
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- CN110056044A CN110056044A CN201910453105.5A CN201910453105A CN110056044A CN 110056044 A CN110056044 A CN 110056044A CN 201910453105 A CN201910453105 A CN 201910453105A CN 110056044 A CN110056044 A CN 110056044A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
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Abstract
The photovoltaic multistage multiple pump and its control method to supply water the invention discloses a kind of hillside fields, it is desirable to provide a kind of the photovoltaic multistage multiple pump and its control method of the hillside fields that low energy consumption water supply.Photovoltaic multistage multiple pump therein includes the first water pump group, the second water pump group, third water pump group, the first reservoir, the second reservoir, third reservoir, master controller and photovoltaic generating system；Master controller is electrically connected with the first water pump group, the second water pump group, third water pump group and photovoltaic generating system respectively；First reservoir is set to the first order user area in hillside fields；First water pump group is supplied water to first order user area and the first reservoir respectively by first pipe；Second reservoir is set to the second level user area in hillside fields；Second water pump group is supplied water to second level user area and the second reservoir respectively by second pipe；The third reservoir is set to the third level user area in hillside fields；Third water pump group is supplied water to third level user area and third reservoir respectively by third pipeline.
Description
Technical field
The present invention relates to supply equipment technical field, a kind of supply water more particularly, to hillside fields photovoltaic multistage multiple pump and
Its control method.
Background technique
With the continuous improvement of people's living standards, the small towns village tap water that builds up monutainous regions has become problem anxious to be resolved
Large quantities of drinking water engineerings have been built using existing water resource in mountainous rural area in recent years, have played very big benefit, but
There are some engineerings and be restricted greatly very much because being discharged water shortage or the lower promotion cost of topography by water source, or in order to meet
Water-supply quantity requires and has selected the river water, reservoir water that topography is low, water quality is poor as living water water source, although full in this way
The foot living water in small towns or rural area, that however, there are also operating costs is high, water system is dangerous, resource of water supply list
One, it many drawbacks such as is affected by synoptic climate condition.
Summary of the invention
The purpose of the present invention is intended to overcome the shortcomings of the prior art, provides a kind of hillside fields that energy-saving effect is good water supply
Photovoltaic multistage multiple pump and its control method.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of photovoltaic multistage multiple pump that hillside fields is supplied water, hillside fields therein is divided into the first order from high to low by height above sea level
User area, second level user area and third level user area totally three regions；The photovoltaic multistage multiple pump includes the first water pump group,
Second water pump group, third water pump group, the first reservoir, the second reservoir, third reservoir, master controller and photovoltaic power generation
System；The master controller is electrically connected with the first water pump group, the second water pump group, third water pump group and photovoltaic generating system respectively；
The photovoltaic generating system is set to hillside fields top；First reservoir is set to the first order user area in hillside fields；First water
Pump group is supplied water to first order user area and the first reservoir respectively by first pipe；Second reservoir is set to hillside fields
Second level user area；Second water pump group is supplied water to second level user area and the second reservoir respectively by second pipe；Described
Three reservoirs are set to the third level user area in hillside fields；Third water pump group is by third pipeline respectively to third level user area and the
Three reservoirs supply water；The first water pump group, the second water pump group and third water pump group are used to fetch water to water source.
Preferably, the water inlet end of the first water pump group, the second water pump group and third water pump group is provided with filter screen.
Preferably, the water inlet end of the first water pump group, the second water pump group and third water pump group is provided with rotation fan
Leaf.
It preferably, further include the first check valve being set in first pipe.
It preferably, further include the second one-way valve being set on second pipe.
It preferably, further include the third check valve being set on third pipeline.
A kind of control method for the photovoltaic multistage multiple pump that hillside fields is supplied water uses the multistage more pumps of photovoltaic as described above
System, the control method include the following steps: the operation threshold for setting the first water pump group startup power as f3, and the second water pump group opens
The operation threshold of dynamic power is f2, and the operation threshold of third water pump group startup power is f1, while f1 is in multistage multiple pump
The minimum startup power of third water pump group, and be then that battery charges when being lower than pump group operation threshold f1；According to not at the same level
Resident, arable land and herding amount of water required ratio on not, distribution whole day generated energy carry out as the progress of corresponding different stage area
It draws water supply；The whole day generated energy used that draws water is generated energy that power is greater than that minimum operation threshold f1 corresponds to the time, is set as
Q, the l/Q of the total pump-out of pump-out l, Zhan required for highest hillside fields is regional, pump-out required for secondary hillside fields is regional are
The m/Q of the total pump-out of m, Zhan, lowermost level hillside fields area required for pump-out be n, the n/Q of the total pump-out of Zhan, it is at different levels between take out
Water ratio is l:m:n, i.e., generated energy ratio used is all l:m:n；Generated energy be power curve corresponding to integral area, first
Grade pump group power consumption, second level pump group power consumption, operation threshold f3, f2, f1 corresponding to third level pump group power consumption, pass through light
The power prediction technology of generated energy is lied prostrate, to adjust daily operation threshold f2 and f3, wherein f1 is setting value, to control multistage
More pump different stage pump group electricity consumptions, are finally that different stage hillside fields area water requirements are adjusted to multistage multiple pump daily
It is whole；And when working as certain level-one water-supply shortages or urgent need water, it additionally incorporates battery and supplied to the rank water pump
Electricity.
Compared with prior art, the present invention has the advantage that
The present invention provides electric energy using photovoltaic, can effectively reduce power grid electricity consumption, can be effectively right by rationally designing water system
The actual used water amount in each region in hillside fields carries out reasonable water supply, realizes the fair supply for using water.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic diagram when present invention uses, wherein part-structure is omitted.
Fig. 2 is for Water flow-path schematic diagram.
Fig. 3 is water supply control schematic diagram.
Fig. 4 is master controller control strategy figure.
Fig. 5 is the schematic diagram of the first water pump group, and the second water pump group and third water pump group structure are essentially identical therewith.
Fig. 6 is the automatic invention manages module diagram of power supply.
Fig. 7 is the flow chart of control method.
Fig. 8 is battery operation schematic diagram.
Fig. 9 is the amount control method figure that draws water that each water pump group operation threshold is combined with photovoltaic power prediction.
It is marked in figure are as follows: first order user area 1, second level user area 2, third level user area 3, the first water pump group 4, second
Water pump group 5, third water pump group 6, the first reservoir 7, the second reservoir 8, third reservoir 9, master controller 10, photovoltaic module
11, filter screen 12, rotary fan 13, the first check valve 14, second one-way valve 15, third check valve 16, inversion changing frequency device 17.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.In the following description, structure and work side of the invention in order to clearly demonstrate
Formula will be described on the basis of attached drawing by many Directional words, but should by "front", "rear", "left", "right",
The Word Understandings such as "upper", "lower" are not construed as word of limitation for convenience of term.
As shown in figs 1-9 hillside fields supply water photovoltaic multistage multiple pump, hillside fields therein by height above sea level from it is high to low according to
It is secondary to be divided into first order user area, second level user area and third level user area totally three regions；The photovoltaic multistage multiple pump packet
Include the first water pump group, the second water pump group, third water pump group, the first reservoir, the second reservoir, third reservoir, master controller,
And photovoltaic generating system；The master controller respectively with the first water pump group, the second water pump group, third water pump group and photovoltaic power generation
System electrical connection；The photovoltaic generating system is set to hillside fields top；The first order that first reservoir is set to hillside fields is used
Family area；First water pump group is supplied water to first order user area and the first reservoir respectively by first pipe；Second reservoir
It is set to the second level user area in hillside fields；Second water pump group is by second pipe respectively to second level user area and the second reservoir
It supplies water；The third reservoir is set to the third level user area in hillside fields；Third water pump group is by third pipeline respectively to third
Grade user area and third reservoir supply water；The first water pump group, the second water pump group and third water pump group are used to fetch water to water source.
Water source is generally river water or underground water, and it has more impurity more, when being extracted by water pump, first
The end of drawing water of water pump group, the second water pump group and third water pump group installs filter screen additional, for carrying out solid magazine biggish in water
Filtering, while rotary fan is installed additional in the filter screen inner end of the first water pump group, the second water pump group and third water pump group, pass through water flow
It drives, for crushing weeds that filter screen does not filter in time or algae etc. during pumping for water pump, prevents water pump long
Internal blocking caused by time operation.
It further include the first check valve being set in first pipe to advanced optimize the technical solution in embodiment,
The second one-way valve being set on second pipe, the third check valve being set on third pipeline.Non-return can also be used in check valve
Valve substitution avoids water from going back by the water pump group refluence stopped.
To advanced optimize the technical solution in embodiment, influenced to eliminate water hammer effect, it can be in the first water pump group, the
Two water pump groups and third water pump group water outlet setting buffer check valve, controllable Slow Close Valve or slow butterfly valve are (in figure not
Show), but because there is certain water to flow backwards when valve event, pumping plant installs overflow pipe additional, while in close proximity to check-valves and under it
Trip installation water-hammer arrester ((not shown)).
In the present embodiment, photovoltaic generating system uses the prior art, and partial component is described below:
(1) chip is controlled in the master controller and use ARM or dsp chip, wherein the STM32 series based on ARM can be used
Single-chip microcontroller, or 51 series monolithics can be used.
(2) the MPPT control is mainly based upon DC/DC translation circuit, passes through the control strategy set in master controller
And control algolithm is boosted to the output of photovoltaic module and array, is depressured and led directly to, thus make photovoltaic module and
The output of array reaches maximization.Its control strategy can make to be Isobarically Control, disturbance observation control, vector controlled, mind
Through network-control, fuzzy control etc., DC/DC circuit can be Boost circuit, Buck circuit, Boost-Buck circuit, normal shock
Circuit, circuit of reversed excitation etc., wherein accumulator charging/discharging circuit can be Shanghai great Zhou Information technology Co., Ltd model
The two-way DC circuit of PowerNex-DC, while MPPT control strategy carries out buck control or photovoltaic to it in master controller
MPPT that array charges to battery control can by the MPP20 Series Controller of this Science and Technology Ltd. of Olympic, Shenzhen,
Or the MCV Series Controller of vibration source Electric Applicance Co., Ltd, Shenzhen.
(3) include more power supply automatic switching controllers, decompression voltage regulator, multistage point in the automatic management module of the power supply
Volt circuit.Wherein power supply automatic switching controller can be power failure automatic switching module YX850, direct current automatic switching module
YX851 etc..Voltage stabilizing module can be that the LTC3780 automatic lifting of SanErYiGo presses Voltage stabilizing module or ailavi
BT900W automatic lifting presses Voltage stabilizing module or the high-power voltage increase and current constant series of modules of SKDZ.
(4) inversion and frequency modulation device can be variable frequency inverter, such as Hope Senlan Science and Technology Co., Ltd
SB200 series high-performance General Converters or the feed pump special high-pressure of Hope Senlan Science and Technology Co., Ltd become
The general biography science and technology PI9000-S series photovoltaic water pump special converter of frequency device series or Chengdu Xing Baichuan Science and Technology Ltd.
Deng, or after frequency converter increase Chengdu Xing Baichuan Science and Technology Ltd. WT1000 intelligent water supply nonshared control unit.
(5) the exchange water pump can be the ZYP series water pump of Yunnan ZY Energy Corporation, wherein can install additional uncommon
The Honor100 series soft starter of Wang Senlan Science and Technology Co., Ltd., using soft stop function, when stopping, alleviates the water of pump
Hammer phenomenon saves system maintenance expense.
(6) photovoltaic module can force down stream component etc. for monocrystalline silicon component, polysilicon members, height.
(7) battery can be colloid storage battery, be perhaps lead-acid accumulator or be lithium iron phosphate storage battery,
It or is ternary lithium battery etc..
(8) charge and discharge protecting module can detect for charge and discharge and protect circuit, or be the anti-overcharge control of battery
Device YX-812-B processed etc..
Wherein " control module " is the control that the controller in master controller is carried out.
Mountainous region area, more against the top, lodging area, cultivated area are smaller, smaller to the demand of water.The need of Distributions of Graded Hillside Fields
Water can be calculated according to resident's population, cultivated area, livestock type and quantity etc..The production capacity of photovoltaic daily generation according to
Method for forecasting photovoltaic power generation quantity calculates daily water pump water lift amount, to distribute water lift amount required for Distributions of Graded Hillside Fields.
First water pump group, the second water pump group and third water pump group lift are different, respectively h, 2h, 3h, and three water pump groups
Rated power and metered flow it is different, the second water pump group metered flow be the first water pump group metered flow 50%~
60%, third water pump group metered flow is the 50%~60% of the second water pump group metered flow, every according to being calculated for lift
The rated power of a water pump group.
Output power of photovoltaic module matches with the first water pump group general power in photovoltaic generating system, and photovoltaic generating system exists
Maximum power nominally is 1.3-1.7 times of the first water pump group total rated power.
Every level-one water pump group is composed in parallel by multiple water pumps, wherein the rated power of each sub- water pump, metered flow with set
Meter lift is identical and matches, and each water pump can collectively constitute water pump group with independent operating.
As preferred embodiment, when designing photovoltaic multistage multiple pump, selection and the first water pump group power match
Photovoltaic module, simultaneous selection flow be the first water pump group 50%~60% the second water pump group, select flow for the second water pump
The third water pump group of group 50%~60%, while the first water pump group, the second water pump group and third water pump group are connected in parallel composition
Water pump group module, at this time third water pump group starting Intensity threshold f3 be the second water pump group working frequency threshold value f2 26%~
30%, the second water pump group starts 26%~30% that Intensity threshold f2 is the first water pump group working frequency threshold value f1, is lower than first
Water pump group startup power then starting storage battery charging circuit, makes full use of the solar energy of Low emissivity illumination, obtains the efficiency of system
To being obviously improved.
Master controller can detecte the signals such as power and the operating status of every level-one pump group, and adjacent two-stage pump group it
Between the operating status that is added handshake, and is pumped according to the group, determined whether by the performance number size detected to pump group
Between switching, and according to the operating status of each pump group to photovoltaic output power carry out MPPT maximum power point tracking and frequency tune
It is whole.
Master controller is powered by the automatic management module of power supply, the automatic management module of the power supply by the more power supplys of intelligence from
Dynamic switch controller and voltage regulator circuit form, and the DC/DC circuit in voltage regulator circuit, MPPT module passes through in parallel defeated with photovoltaic array
Outlet positive and negative anodes are attached, and voltage regulator circuit is attached with the more power supply automatic switching controller main power source input terminals of intelligence, intelligence
The more power supply automatic switching controller backup power source input terminals of energy are attached with accumulator anode and cathode, and the more power supplys of intelligence automatically switch
Controller output end connects Multilevel partial-pressure circuit, for being powered to each driving circuit, when irradiation level abundance, preferentially
Master controller is powered using photovoltaic module inputing power, irradiation level it is lower or without when, automatically switch electric power storage
Pond is powered master controller.
Pump group is switched to the larger level-one pump group of power step by step, is carried out using starting step by step by Starting mode of the invention
Starting control, specific as follows:
Photovoltaic module output voltage and current value are acquired, judges the output power of photovoltaic module.
When detecting that photovoltaic module has output power, then determines whether to reach third water pump group starting operating power and work
Otherwise threshold value f3, the third water pump group water supply start if reaching f3 determine whether to reach battery charge power, if it is determined that knot
Fruit be it is yes, then charge to battery, if it is determined that result be otherwise stop power input, and continue acquire photovoltaic module output
Voltage and current value judge the output power of photovoltaic module.
When determining that output power of photovoltaic module is greater than third water pump group rated power operation, third water pump group is closed, is cut
Change the second water pump group of starting；
When determining that output power of photovoltaic module is greater than the second water pump group rated power operation, the second water pump group is closed, switching is opened
Dynamic first water pump group；
Stopping mode of the invention uses to be stopped step by step, i.e., switches pump group to the smaller level-one pump group of power step by step, shut down
Control, specific as follows:
Photovoltaic module output voltage and current value are acquired, judges the output power of photovoltaic module.
As operation threshold f1 of the output power of photovoltaic module for determining to detect less than the first water pump group, the first water is closed
Pump group, switching the second water pump group of starting.
As operation threshold f2 of the output power of photovoltaic module for determining to detect less than the second water pump group, the second water is closed
Pump group, switching starting third water pump group.
When the output power of photovoltaic module for determining to detect is less than the operation threshold f3 of third water pump group, third water is closed
Pump group charges to battery.
When the output power of photovoltaic module for determining to detect is less than battery charge power, stop power input, continues
Photovoltaic module output voltage and current value are acquired, judges the output power of photovoltaic module.
In photovoltaic multistage multiple pump operational process, classification confession is carried out according to resident, arable land and herding demand on mountainous region
It gives, using taking out i.e. with priority principle directly to resident, arable land and the water supply of pastroal area, photovoltaic is multistage after needing the water supply of water area sufficient
Multiple pump is switched to reservoir water delivery, and water resource is stored in reservoir and is used for the insufficient period scheduling of illumination and makes with adjusting
With.In the energy distribution of multistage multiple pump, rank pump group, that is, third water pump group priority level that power is small, lift is low is most
Height, the higher pump group of lift i.e. the second water pump group, the first water pump group isopreference rank reduce step by step.In the situation of irradiation level abundance
Under, start third water pump group, then successively switch and start other pump groups upwards step by step, until most top pump group (the first water pump group)
Starting completely；In the insufficient situation of irradiation level, the first water pump group is closed, is successively switching downwards step by step and is starting other pumps
Group switches to battery charging until all pump groups stop completely.
During multistage multiple pump group operation, when irradiation intensity enhances, and output power of photovoltaic module increases, if cutting
High-power pump group is changed, corresponding high-power pump group pump group quickly carries out MPPT response, and quickly adjusts current pump group；Meanwhile working as spoke
According to strength reduction, when output power of photovoltaic module declines, if switching small-power pump group, corresponding small-power pump group pump group quickly carry out
MPPT response, and current pump group is quickly adjusted, it avoids occurring inputting in handoff procedure not enough pump group being caused to be shut down suddenly, improves system
System stability.
When in photovoltaic multistage multiple pump operational process occur as caused by the extraneous factors such as cloud layer process, tree shade flying bird
Irradiation level variation, causes photovoltaic input power wild effect occur, changed power is smaller, does not touch operation threshold, is not required to
Adjacent rank pump group is adjusted, son pump in parallel in pump group is subjected to power regulation, for absorbing irradiation variation bring power
Fluctuation.
When photovoltaic module input power in third water pump group operation threshold hereinafter, its input power directly fills battery
Electricity passes through charge protection device into battery mode process in photovoltaic module conveying electric energy, when the voltage for detecting battery
When for full piezoelectric voltage, charge being automatically stopped to battery, it, can be with when detecting that battery voltage is lower than full piezoelectric voltage
Normally charge to it；Simultaneously when battery carries out function to water pump groups at different levels, preset when the voltage for detecting battery is lower than
Stop externally electric discharge when voltage, then to guarantee the safety of battery operation.
Master controller runs the control of state and switching is comprising stablizing delay setting.When water pump group switches over, lead to
Crossing stable delay setting ensures that water pump is safely operated, and avoids frequent switching between two water pump groups, causes the water pump service life short.
It further include protective module in master controller, the input of connection photovoltaic module is inputted with battery, is being occurred due to outside
When light intensity, the system failure, power conversion are frequent, throwing is cut to storage battery power supply, defencive function is carried out to system.
Control strategy is contained with water and power prediction strategy in master controller, passes through the power prediction based on weather forecast
Or other photovoltaic power predicting strategies predict daily generated output, generated energy, while it is each to carry out different operating valve system
The pump-out and water requirement estimation of grade；Simultaneously by the country of hillside fields user at different levels, cultivated area, livestock type and quantity with
Regional water supply standard come determine it is at different levels daily must water requirements, then predict that the elasticity in areas at different levels needs water by load estimation
Amount；Adjusted simultaneously by photovoltaic and prediction of drawing water, system Water Demand Predictions at different levels it is daily it is at different levels between ratio of drawing water, water storage
Ratio.
Have a power failure suddenly in water pump and valve is closed, the switching module in master controller also needs to adjust using battery output
It is slowly varying to control water pump group power, while controlling sluggish flow and becoming smaller, avoids fluid inertia to pipeline and system destruction.
Reservoir bottom is equipped with blow-off line, is controlled using valve, opens valve when needing and clearing up with blowdown
Door is handled.
Contain MPPT control in master controller, realized using DC-DC step-up/step-down circuit, can for Isobarically Control,
Disturbance observation control, vector controlled, ANN Control, fuzzy control etc..
Control inverter module is modulated to water pump by control and provides electric energy, if controlling inversion using DC water pump
The inversion function of module is then not necessarily to run, and directly can provide electric energy for DC water pump group.
The control method for the photovoltaic multistage multiple pump that hillside fields is supplied water, it is defeated with field measurement 900W photovoltaic array whole day power
For out, wherein curve is power curve, and integral area is generated energy, and the pump-out of photovoltaic water pump pass directly proportional to generated energy
System, i.e. whole day generated energy ratios used at different levels of drawing water are all pump-out ratio.As shown in generated energy area-graph 9, the first water is set
The operation threshold of pump group startup power is f3, and the operation threshold of the second water pump group startup power is f2, and third water pump group starts function
The operation threshold of rate is f1, while f1 is the minimum startup power of third water pump group in multistage multiple pump, and is lower than pump group work
Making threshold value f1 then is that battery charges.According to resident, arable land and the herding amount of water required ratio on different stage, distribution is complete
Its generated energy carries out carrying out supply of drawing water for corresponding different stage area.The whole day generated energy used that draws water is that power is greater than most
Low operation threshold f1 corresponds to the generated energy of time, is set as Q, the total pump-out of pump-out l, Zhan required for highest hillside fields area
L/Q, pump-out required for the area of secondary hillside fields is m, and the m/Q of the total pump-out of Zhan, lowermost level hillside fields is taken out required for area
Water is n, the n/Q of the total pump-out of Zhan, it is at different levels between ratio of drawing water be l:m:n, i.e., generated energy ratio used is all l:m:n.With
Above-mentioned identical, generated energy is integral area corresponding to power curve, first order pump group power consumption as shown in Figure 9, second level pump
Operation threshold f3, f2, f1 corresponding to group power consumption, third level pump group power consumption, pass through the power prediction skill of photovoltaic power generation quantity
Art, to adjust daily operation threshold f2 and f3, wherein f1 is setting value, so that control multistage pumps the electricity consumption of different stage pump group more
Amount, is finally that different stage hillside fields area water requirements are adjusted to multistage multiple pump daily.And work as certain level-one water supply
When deficiency or urgent need water, battery can be additionally incorporated and be powered to the rank water pump.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. the photovoltaic multistage multiple pump that a kind of hillside fields is supplied water, hillside fields therein is divided into first from high to low by height above sea level
Grade user area, second level user area and third level user area totally three regions；The photovoltaic multistage multiple pump includes the first water pump
Group, the second water pump group, third water pump group, the first reservoir, the second reservoir, third reservoir, master controller and photovoltaic hair
Electric system；It is characterized by: the master controller is sent out with the first water pump group, the second water pump group, third water pump group and photovoltaic respectively
Electric system electrical connection；The photovoltaic generating system is set to hillside fields top；First reservoir is set to the first order in hillside fields
User area；First water pump group is supplied water to first order user area and the first reservoir respectively by first pipe；Second water storage
Pond is set to the second level user area in hillside fields；Second water pump group is by second pipe respectively to second level user area and the second water storage
It supplies water in pond；The third reservoir is set to the third level user area in hillside fields；Third water pump group is by third pipeline respectively to the
Three-level user area and third reservoir supply water；The first water pump group, the second water pump group and third water pump group to water source for taking
Water.
2. the photovoltaic multistage multiple pump that hillside fields is supplied water according to claim 1, it is characterised in that: the first water pump group,
The water inlet end of second water pump group and third water pump group is provided with filter screen.
3. the photovoltaic multistage multiple pump that hillside fields according to claim 1 or claim 2 is supplied water, it is characterised in that: first water pump
The water inlet end of group, the second water pump group and third water pump group is provided with rotary fan.
4. the photovoltaic multistage multiple pump that hillside fields according to claim 1 or claim 2 is supplied water, it is characterised in that: it further includes setting
In the first check valve in first pipe.
5. the photovoltaic multistage multiple pump that hillside fields according to claim 1 or claim 2 is supplied water, it is characterised in that: it further includes setting
In the second one-way valve on second pipe.
6. the photovoltaic multistage multiple pump that hillside fields according to claim 1 or claim 2 is supplied water, it is characterised in that: it further includes setting
In the third check valve on third pipeline.
7. the control method for the photovoltaic multistage multiple pump that claim 1-6 supplies water in any hillside fields, it is characterised in that use
Photovoltaic multistage multiple pump as described above, include the following steps: the operation threshold for setting the first water pump group startup power as f3,
The operation threshold of second water pump group startup power is f2, and the operation threshold of third water pump group startup power is f1, while f1 is more
The minimum startup power of third water pump group, is then that battery charges lower than pump group operation threshold f1 in grade multiple pump；Root
According to resident, arable land and the herding amount of water required ratio on different stage, distributes whole day generated energy and carry out as corresponding different stage
Area carries out supply of drawing water；The whole day generated energy used that draws water is power generation that power is greater than that minimum operation threshold f1 corresponds to the time
Amount is set as Q, the l/Q of the total pump-out of pump-out l, Zhan required for highest hillside fields area, required for secondary hillside fields is regional
Pump-out is m, the m/Q of the total pump-out of Zhan, and pump-out required for the area of lowermost level hillside fields is n, the n/Q of the total pump-out of Zhan, respectively
Ratio of drawing water between grade is l:m:n, i.e., generated energy ratio used is all l:m:n；Generated energy is integral corresponding to power curve
Area, first order pump group power consumption, second level pump group power consumption, operation threshold f3, f2 corresponding to third level pump group power consumption,
F1 adjusts daily operation threshold f2 and f3 by the power prediction technology of photovoltaic power generation quantity, and wherein f1 is setting value, to control
The multistage more pump different stage pump group electricity consumptions of system, are finally different stage hillside fields area water requirements to multistage multiple pump daily
It is adjusted；When certain level-one water-supply shortages or urgent need water, additionally incorporates battery and carried out to the rank water pump
Power supply.
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