CN107035672A - Realize the photovoltaic water pump system and its control method of water saving and energy source optimization irrigation - Google Patents
Realize the photovoltaic water pump system and its control method of water saving and energy source optimization irrigation Download PDFInfo
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- CN107035672A CN107035672A CN201611091584.3A CN201611091584A CN107035672A CN 107035672 A CN107035672 A CN 107035672A CN 201611091584 A CN201611091584 A CN 201611091584A CN 107035672 A CN107035672 A CN 107035672A
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- water
- water pump
- decision
- inverter
- photovoltaic
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of photovoltaic water pump system and its control method for realizing water saving and energy source optimization irrigation, photovoltaic water pump system includes inverter, water pump, host microcontroller, decision controller, level sensor, soil humidity sensor and Wi Fi transmitters etc., and control method includes step：1) the power flow characteristic curve of water pump system is built according to water yield and water pump input power；2) decision-making that decision controller is made whether to irrigate according to soil humidity information and weather forecast information；3) host microcontroller controls Driven by inverter pumping for water pump according to the decision information of decision controller or photovoltaic electric energy is connected to the grid.The present invention realizes the photovoltaic water pump system and its control method of water saving and energy source optimization irrigation, its moisture storage capacity for having taken into full account well, soil moisture and weather forecast rainfall data, the matching supplied water between crop water demand can be realized, and the effectively optimizing utilization of photovoltaic energy is realized, maximized environmental benefit and economic benefit can be brought.
Description
Technical field
It is more particularly to a kind of to realize the light that water saving and energy source optimization are irrigated the present invention relates to photovoltaic water pump irrigation technique field
Lie prostrate water pump system and its control method.
Background technology
For the matching between ensureing crop water demand and supplying water, photovoltaic water pump irrigation system is generally with crop water demand
With being designed over one month for worst in the solar irradiation cycle.Therefore, although the demand and solar irradiation of water are to change,
System can meet the requirement used most of irrigation season.
In the irrigation of traditional photovoltaic water pump system, the matching between the demand of water and supply is passed by soil moisture
Sensor is detected.But existing photovoltaic water pump system is not combined with Changes in weather information so that solar photovoltaic water pump
System can not rationally make the decision-making for drawing water or for injecting power network by electric energy, it is impossible to obtain and maximize benefit.
The content of the invention
In view of this, it is an object of the invention to provide it is a kind of realize water saving and energy source optimization irrigate photovoltaic water pump system and
Its control method, to realize the matching between water supply and crop water demand, and optimizes the utilization of photovoltaic energy, is maximized
Economic benefit.
The present invention realizes the photovoltaic water pump system that water saving and energy source optimization are irrigated, including is integrated with frequency conversion output and fixed frequency
Rate output inverter, the inverter include MPPT-DC/DC converters, be connected with MPPT-DC/DC converters DC buses,
And frequency conversion DC/AC inverters and fixed frequency DC/AC inverters are connected with DC buses；
Also include the water pump by frequency conversion DC/AC Driven by inverter；
Also include the host microcontroller of control inverter；
Also include decision controller, the decision controller is electrically connected with master controller；
Also include the water surface in the first power sensor and detection well of detection fixed frequency DC/AC inverter output powers
The level sensor of depth, first power sensor and level sensor are electrically connected with host microcontroller；
Also include the second power sensor of soil humidity sensor and detection frequency conversion DC/AC inverter output powers, institute
State soil humidity sensor and the second power sensor is electrically connected with decision controller；
Also include the Wi-Fi transmitters for collecting weather forecast information, the Wi-Fi transmitters and programmable controller are electrically connected
Connect.
The invention also discloses a kind of control method for realizing the photovoltaic water pump system that water saving and energy source optimization are irrigated, including
Following steps：
1) pump power data and corresponding water yield are collected by the second power sensor, utilizes water pump input power
Data build power-flow characteristic curve with drawing water, and determine operating power and the working time of water pump；Power-flow characteristics
Between relation be：Wherein：Q is current, and H is
Water, PinFor water pump input power, c1, c2, c3 and c4 are experiment coefficient；
2) decision controller feeds back the drop that humidity information, Wi-Fi transmitters obtain second day by soil humidity sensor
Water is forecast and characteristic curve of soil moisture is analyzed, if second day expected soil moisture content is not less than meeting to making produce
Amount has the lowest threshold of negative effect, then makes the decision-making that need not be irrigated, if second day expected soil moisture content is less than meeting pair
Crop yield has the lowest threshold of negative effect, then makes the decision-making that need not be irrigated；
3) host microcontroller controls Driven by inverter pumping for water pump or by photovoltaic electric according to the decision information of decision controller
It can be connected to the grid：
When decision information is needs to irrigate, host microcontroller control frequency conversion DC/AC Driven by inverter pumping for water pump, and
In pump process, when level sensor is detected water level in well, host microcontroller just controls water pump pause to draw water one section
Time, when level sensor can't detect water level in well, host microcontroller is again after the pause time of pumping of setting terminates
Pumping for water pump is controlled, so repeatedly until decision controller makes the decision-making that need not be irrigated, host microcontroller control frequency conversion DC/
AC inverters stop pump working；
Decision information is when need not irrigate, electric energy is incorporated to electricity by host microcontroller control fixed frequency DC/AC inverters
Net.
Beneficial effects of the present invention：
The present invention realizes the photovoltaic water pump system and its control method of water saving and energy source optimization irrigation, and it has taken into full account water
Moisture storage capacity, soil moisture and the weather forecast rainfall data of well, can realize the matching between water supply and crop water demand, and in fact
The effectively optimizing for having showed photovoltaic energy is utilized, and can bring maximized environmental benefit and economic benefit.
Brief description of the drawings
Fig. 1 realizes the structural representation for the photovoltaic water pump system that water saving and energy source optimization are irrigated for the present invention；
Fig. 2 is the structural representation of pumping system；
Fig. 3 is the power current characteristic curve diagram of a specific pumping system；
Fig. 4 is considers 12- measurement data in soil moisture versus time curve figure during weather forecast, figure, and 13- passes through
The humidity decline curve of measure data fitting, 14- is by irrigating increased humidity, 15- humidity downward trend curves, 16- forecast
Precipitation, 17- futures prestore the time；
Fig. 5 is the decision principle figure of decision controller.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment one：The present embodiment realizes the photovoltaic water pump system that water saving and energy source optimization are irrigated, including is integrated with frequency conversion
The inverter 1 that output and fixed frequency are exported, the inverter includes MPPT-DC/DC converters 101, turned with MPPT-DC/DC
DC buses 102 and frequency conversion DC/AC inverters 103 and fixed frequency DC/AC inverters are connected with DC buses that parallel operation is connected
104, the electric energy input inverter 1 that solar panel 2 is produced；
Also include the water pump 3 by frequency conversion DC/AC Driven by inverter；
Also include the host microcontroller 4 of control inverter；
Also include decision controller 5, the decision controller is electrically connected with master controller；
Also include the first power sensor 6 and detection well reclaimed water of detection fixed frequency DC/AC inverter output powers
The level sensor 7 of face depth, first power sensor and level sensor are electrically connected with host microcontroller；
Also include the second power sensor 9 of soil humidity sensor 8 and detection frequency conversion DC/AC inverter output powers,
The soil humidity sensor and the second power sensor are electrically connected with decision controller；
Also include the Wi-Fi transmitters 10 for collecting weather forecast information, Wi-Fi transmitters and the programmable controller electricity
Connection.
Embodiment two, the present embodiment realizes the control method for the photovoltaic water pump system that water saving and energy source optimization are irrigated, including
Following steps：
1) pump power data and corresponding water yield are collected by the second power sensor, utilizes water pump input power
Data build power-flow characteristic curve with drawing water, and determine operating power and the working time of water pump；The work(of pumping system
Rate-flow characteristic curve can be calculated by math equation (as efficiency of the consideration motor under different input power is similar
Law) or can pass through preliminary pump test evaluation；One kind of current, water yield and water pump input power is typical to be represented as following
Shown in three rank multinomials：Wherein：Q is current, and H is
Water yield, PinFor water pump input power, c1, c2, c3 and c4 are experiment coefficient；
2) decision controller feeds back the drop that humidity information, Wi-Fi transmitters obtain second day by soil humidity sensor
Water is forecast and characteristic curve of soil moisture is analyzed, if second day expected soil moisture content is not less than meeting to making produce
Amount has the lowest threshold of negative effect, then makes the decision-making that need not be irrigated, if second day expected soil moisture content is less than meeting pair
Crop yield has the lowest threshold of negative effect, then makes the decision-making that need not be irrigated；
3) host microcontroller controls Driven by inverter pumping for water pump or by photovoltaic electric according to the decision information of decision controller
It can be connected to the grid：
When decision information is needs to irrigate, host microcontroller control frequency conversion DC/AC Driven by inverter pumping for water pump, and
In pump process, when level sensor is detected water level in well 11, host microcontroller just controls water pump pause to draw water one
Section the time, after the pause time of pumping of setting terminates when level sensor can't detect water level in well, host microcontroller
Pumping for water pump is controlled again, so repeatedly until decision controller makes the decision-making that need not be irrigated, host microcontroller control frequency conversion
DC/AC inverters stop pump working；
Decision information is when need not irrigate, electric energy is incorporated to electricity by host microcontroller control fixed frequency DC/AC inverters
Net.
The present embodiment realizes the photovoltaic water pump system and its control method of water saving and energy source optimization irrigation, and it takes into full account
Moisture storage capacity, soil moisture and the weather forecast rainfall data of well, can realize the matching between water supply and crop water demand, and
The effectively optimizing for realizing photovoltaic energy is utilized, and can bring maximized environmental benefit and economic benefit.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.
Claims (2)
1. a kind of realize the photovoltaic water pump system that water saving and energy source optimization are irrigated, it is characterised in that：
Including be integrated with frequency conversion output and fixed frequency output inverter, the inverter include MPPT-DC/DC converters,
The DC buses that are connected with MPPT-DC/DC converters and it is connected frequency conversion DC/AC inverters and fixed frequency DC/AC with DC buses
Inverter；
Also include the water pump by frequency conversion DC/AC Driven by inverter；
Also include the host microcontroller of control inverter；
Also include decision controller, the decision controller is electrically connected with master controller；
Also include water surface depth in the first power sensor and detection well of detection fixed frequency DC/AC inverter output powers
Level sensor, first power sensor and level sensor are electrically connected with host microcontroller；
Also include the second power sensor of soil humidity sensor and detection frequency conversion DC/AC inverter output powers, the soil
Earth humidity sensor and the second power sensor are electrically connected with decision controller；
Also include the Wi-Fi transmitters for collecting weather forecast information, Wi-Fi transmitters and the programmable controller electrical connection.
2. a kind of profit requires to realize the control method for the photovoltaic water pump system that water saving and energy source optimization are irrigated described in 1, its feature exists
In：Comprise the following steps：
1) pump power data and corresponding water yield are collected by the second power sensor, using water pump input power and taken out
Water number determines operating power and the working time of water pump according to power-flow characteristic curve is built；Between power-flow characteristics
Relation be：Wherein：Q is current, and H is water outlet
Amount, PinFor water pump input power, c1, c2, c3 and c4 are experiment coefficient；
2) precipitation that decision controller obtains second day by soil humidity sensor feedback humidity information, Wi-Fi transmitters is pre-
Report and characteristic curve of soil moisture are analyzed, and can be had if second day expected soil moisture content is not less than to crop yield
The lowest threshold of negative effect, then make the decision-making that need not be irrigated, if second day expected soil moisture content is less than meeting to crop
Yield has the lowest threshold of negative effect, then makes the decision-making that need not be irrigated；
3) host microcontroller according to the decision information of decision controller control Driven by inverter pumping for water pump or by photovoltaic electric energy simultaneously
Enter power network：
When decision information is needs to irrigate, host microcontroller control frequency conversion DC/AC Driven by inverter pumping for water pump, and drawing water
During, when level sensor is detected water level in well, host microcontroller just controls water pump pause to draw water a period of time,
, when level sensor can't detect water level in well, host microcontroller controls water again after the pause time of pumping of setting terminates
Pumping water, so repeatedly until decision controller makes the decision-making that need not be irrigated, host microcontroller control frequency conversion DC/AC inversions
Device stops pump working；
Decision information is when need not irrigate, electric energy is connected to the grid by host microcontroller control fixed frequency DC/AC inverters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611091584.3A CN107035672B (en) | 2016-12-01 | 2016-12-01 | Realize the photovoltaic water pump system and its control method that water-saving and energy source optimization is irrigated |
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| CN201611091584.3A CN107035672B (en) | 2016-12-01 | 2016-12-01 | Realize the photovoltaic water pump system and its control method that water-saving and energy source optimization is irrigated |
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| CN107035672A true CN107035672A (en) | 2017-08-11 |
| CN107035672B CN107035672B (en) | 2019-04-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109452148A (en) * | 2019-01-15 | 2019-03-12 | 石家庄学院 | Greenbelt automatic irrigation method and terminal device |
| CN110036891A (en) * | 2019-04-23 | 2019-07-23 | 丰疆智能科技研究院(常州)有限公司 | Field irrigation control method and field irrigation control system |
| WO2020140023A1 (en) | 2018-12-27 | 2020-07-02 | Capillary Concrete, Llc | Aerification system |
| US10798892B2 (en) | 2015-10-02 | 2020-10-13 | Capillary Concrete, Llc | Aerification system |
| US11746476B2 (en) | 2019-11-25 | 2023-09-05 | Capillary Concrete, Llc | Subsurface irrigation system for a sports field |
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| FR2722251A1 (en) * | 1994-07-05 | 1996-01-12 | Transenergie | Solar powered water pumping station for use in remote locations such as semi-arid zones |
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| FR2722251A1 (en) * | 1994-07-05 | 1996-01-12 | Transenergie | Solar powered water pumping station for use in remote locations such as semi-arid zones |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10798892B2 (en) | 2015-10-02 | 2020-10-13 | Capillary Concrete, Llc | Aerification system |
| WO2020140023A1 (en) | 2018-12-27 | 2020-07-02 | Capillary Concrete, Llc | Aerification system |
| CN109452148A (en) * | 2019-01-15 | 2019-03-12 | 石家庄学院 | Greenbelt automatic irrigation method and terminal device |
| CN110036891A (en) * | 2019-04-23 | 2019-07-23 | 丰疆智能科技研究院(常州)有限公司 | Field irrigation control method and field irrigation control system |
| US11746476B2 (en) | 2019-11-25 | 2023-09-05 | Capillary Concrete, Llc | Subsurface irrigation system for a sports field |
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| CN107035672B (en) | 2019-04-12 |
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