CN117296689B - Energy-saving irrigation method and system based on well electricity double control - Google Patents
Energy-saving irrigation method and system based on well electricity double control Download PDFInfo
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- CN117296689B CN117296689B CN202311534088.0A CN202311534088A CN117296689B CN 117296689 B CN117296689 B CN 117296689B CN 202311534088 A CN202311534088 A CN 202311534088A CN 117296689 B CN117296689 B CN 117296689B
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- 230000002262 irrigation Effects 0.000 title claims abstract description 249
- 238000003973 irrigation Methods 0.000 title claims abstract description 249
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000005611 electricity Effects 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 130
- 238000005265 energy consumption Methods 0.000 claims abstract description 100
- 239000002689 soil Substances 0.000 claims abstract description 45
- 238000005086 pumping Methods 0.000 claims abstract description 40
- 238000012216 screening Methods 0.000 claims abstract description 12
- 238000012876 topography Methods 0.000 claims abstract description 5
- 238000013210 evaluation model Methods 0.000 claims description 19
- 238000005381 potential energy Methods 0.000 claims description 13
- 230000010365 information processing Effects 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000003621 irrigation water Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
- A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
Abstract
The invention discloses an energy-saving irrigation method and system based on well electricity double control, and belongs to the technical field of agricultural irrigation, wherein the method comprises the steps of obtaining climate information, soil information and crop information of an irrigation site, and predicting target water consumption of the irrigation site; marking the positions of a plurality of motor-pumped wells on the irrigation area, and screening out a plurality of motor-pumped wells with a distance suitable for irrigation; acquiring well diameters and well depths of a plurality of motor-pumped wells, and predicting pumping energy consumption of a water pump corresponding to the motor-pumped wells in unit time; based on pumping energy consumption of a water pump corresponding to the motor-pumped wells in unit time, and combining the topography and soil conditions of the motor-pumped wells, predicting and obtaining irrigation energy consumption of the motor-pumped wells in unit time; establishing a first formula based on the target water consumption of the irrigation site and the unit time flow of the motor-pumped wells; establishing a second formula based on irrigation energy consumption of a plurality of motor-pumped wells in unit time and in combination with irrigation time; and determining the irrigation time of different motor-pumped wells under energy-saving irrigation based on the first formula and the second formula.
Description
Technical Field
The invention relates to the technical field of agricultural irrigation, in particular to an energy-saving irrigation method and system based on well electricity double control.
Background
Motor-pumped well irrigation engineering is a facility engineering for farm irrigation, and is implemented by arranging motor-pumped wells and corresponding pipeline systems to lift groundwater or river water to the ground surface for irrigation. The project can effectively utilize water resources, improve the irrigation efficiency of farmlands, and reduce the exploitation of underground water.
The motor-pumped well is a water well for pumping water by using a power machine to drive a water pump. For large area irrigation needs, irrigation areas require multiple motor-pumped wells to be established. Because the positions of the motor-pumped wells are different, the water quality in the motor-pumped wells has certain difference, and meanwhile, the consumed electric energy is different according to different areas and different underground water levels at the positions of the motor-pumped wells, so that the water cost is also greatly different.
Therefore, how to provide an irrigation method, so that the irrigation method can meet the large-area irrigation requirement and save energy is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
Therefore, the invention provides an energy-saving irrigation method and system based on well electricity double control, which are used for solving the problem of water source energy waste caused by irrigation of a plurality of motor-pumped wells due to large-area irrigation requirements in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
according to a first aspect of the invention, there is provided an energy-saving irrigation method based on well electricity double control, comprising the steps of:
step S1: acquiring climate information, soil information and crop information of an irrigation site, and predicting target water consumption of the irrigation site;
step S2: marking the positions of a plurality of motor-pumped wells on a irrigated area, and screening out a plurality of motor-pumped wells with distances suitable for the irrigation place;
step S3: acquiring well diameters and well depths of a plurality of motor-pumped wells, and predicting pumping energy consumption of a water pump corresponding to the motor-pumped wells in unit time;
step S4: based on pumping energy consumption of a water pump corresponding to the motor-pumped well in unit time, and combining the topography and soil conditions of the motor-pumped well, predicting and obtaining irrigation energy consumption of a plurality of motor-pumped wells in unit time;
step S5: establishing a first formula related to irrigation time based on the target water consumption of the irrigation site and the unit time flow of a plurality of motor-pumped wells;
step S6: establishing a second formula related to the total irrigation energy consumption of the places where irrigation is located based on the irrigation energy consumption of a plurality of motor-pumped wells in unit time and combining the irrigation time;
step S7: and determining the irrigation time of different motor-pumped wells under energy-saving irrigation based on the first formula and the second formula.
Further, in the step S1, climate information and soil information of the irrigation site are obtained, and a target water consumption of the irrigation site is predicted, which specifically includes the following steps:
step S101: acquiring the water content of soil of the irrigation place;
step S102: obtaining precipitation and vapor evaporation of the irrigation place in a plurality of time periods;
step S103: acquiring the crop type of the irrigation site;
step S104: and predicting and obtaining the target water consumption of the irrigation site based on the first prediction evaluation model.
Further, the first predictive evaluation model is:
wherein Q is the target water consumption of the irrigation site, theta 1 Is the saturation quantity of soil water, theta 2 For the water content of the soil at the irrigation site, X is the coefficient corresponding to the crop type at the irrigation site, eta 1 For the average precipitation of irrigation sites over a plurality of time periods, eta 2 Water vapor evaporation for a plurality of time periods at the irrigation site.
Further, in the step S3, the pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time is predicted by a second prediction evaluation model, where the second prediction evaluation model is:
wherein C is i The pumping energy consumption of the water pump corresponding to the ith motor-pumped well in unit time lambda i For the energy consumption coefficient of the ith motor-pumped well corresponding to the operation of the water pump, r i Is the wellhead diameter of the ith motor-pumped well, H i And g is the gravity acceleration, and i is the number of the screened motor-pumped wells.
Further, in step S4, based on pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time, and combining the terrain and soil conditions where the motor-pumped well is located, irrigation energy consumption of a plurality of motor-pumped wells in unit time is predicted, and the method specifically includes the following steps:
step S401: obtaining the predicted pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time;
step S402: acquiring the gradient of the land where the motor-pumped well is located, and determining the land potential energy of the land where the motor-pumped well is located;
step S403: acquiring soil pores of the place where the motor-pumped well is located, and determining the running water speed of the place where the motor-pumped well is located;
step S404: based on the running water speed and the land potential energy of the place where the motor-pumped well is located, predicting the running water energy consumption of the place where the motor-pumped well is located according to a third prediction evaluation model;
step S405: and adding the pumping energy consumption and the running water energy consumption to obtain the irrigation energy consumption of the motor-pumped well in unit time.
Further, the third predictive evaluation model is:
S i ＝K 1 E i (sinα i )+K 2 V i (W i )；
wherein S is i For the running water energy consumption of the place where the ith motor-pumped well is located, alpha i Is the gradient of the place where the ith motor-pumped well is located, E i (sinα i ) K is a preset function of the potential energy of the land where the ith motor-pumped well is located 1 Is the preset weight of the potential energy of the land, W i Is the soil pore of the i-th motor-pumped well, V i (W i ) K is a preset function of the running water speed of the ith motor-pumped well 2 And i is the number of the screened motor-pumped wells for the preset weight of the running water speed.
Further, the first formula is:
Q＝q 1 t 1 +q 2 t 2 +......+q i t i ：
wherein Q is the target water consumption of the irrigation site, Q i Is the flow rate of the ith motor-pumped well in unit time, t i And (3) the irrigation time of the ith motor-pumped well, wherein i is the number of the screened motor-pumped wells.
Further, the second formula is:
W＝P 1 t 1 +P 2 t 2 +……+P i t i ；
wherein W is the total irrigation energy consumption of the irrigation site, and P i Energy consumption for irrigation per unit time of ith motor-pumped well, t i And (3) the irrigation time of the ith motor-pumped well, wherein i is the number of the screened motor-pumped wells.
Further, in step S7, after determining the irrigation time of different motor-pumped wells under energy-saving irrigation, the different motor-pumped wells irrigate the place where the irrigation is located according to the irrigation time.
According to a second aspect of the present invention, there is provided an energy-saving irrigation system based on well electricity double control, for implementing any one of the above-mentioned energy-saving irrigation methods based on well electricity double control, comprising:
the first information acquisition unit is used for acquiring climate information, soil information and crop information of the irrigation site;
the first prediction unit is used for predicting the target water consumption of the irrigation site;
the screening unit is used for marking the positions of the motor-pumped wells on the irrigation area and screening out the motor-pumped wells with the distances suitable for the irrigation place;
the second information acquisition unit is used for acquiring the well diameters and the well depths of the motor-pumped wells;
the second prediction unit is used for predicting the pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time;
the third prediction unit is used for predicting and evaluating irrigation energy consumption of a plurality of motor-pumped wells in unit time based on pumping energy consumption of the water pump corresponding to the motor-pumped wells in unit time in combination with the terrain and soil conditions of the motor-pumped wells;
the first information processing unit is used for establishing a first formula related to irrigation time based on the target water consumption of the irrigation site and the unit time flow of a plurality of motor-pumped wells;
the second information processing unit is used for establishing a second formula related to the total irrigation energy consumption of the irrigation places based on the irrigation energy consumption of a plurality of motor-pumped wells in unit time and combining the irrigation time;
and the feedback unit is used for determining the irrigation time of different motor-pumped wells under energy-saving irrigation.
The invention has the following advantages:
the method and the device acquire climate information, soil information and crop information of the irrigation site, and predict target water consumption of the irrigation site. And marking the positions of a plurality of motor-pumped wells on the irrigation area, and screening out the motor-pumped wells with a distance suitable for irrigation. And obtaining the well diameters and the well depths of a plurality of motor-pumped wells, and predicting the pumping energy consumption of the water pump corresponding to the motor-pumped wells in unit time. Based on pumping energy consumption of the water pump corresponding to the motor-pumped wells in unit time, and combining the terrain and soil conditions of the motor-pumped wells, the irrigation energy consumption of the motor-pumped wells in unit time is obtained through prediction.
The method establishes a first formula related to irrigation time based on target water consumption of the irrigation site and unit time flow of a plurality of motor-wells. Based on the irrigation energy consumption of a plurality of motor-pumped wells in unit time, a second formula related to the total irrigation energy consumption of the irrigation site is established in combination with the irrigation time. And determining the irrigation time of different motor-pumped wells under energy-saving irrigation based on the first formula and the second formula. After the irrigation time of different motor-pumped wells under energy-saving irrigation is determined, the different motor-pumped wells irrigate the land where the motor-pumped wells are located according to the irrigation time, so that the large-area irrigation requirement can be met, and energy is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
FIG. 1 is a flow chart of an energy-saving irrigation method based on well electricity double control provided by the invention;
FIG. 2 is a specific flowchart of step S1 in the energy-saving irrigation method provided by the invention;
FIG. 3 is a flowchart showing a step S4 in the energy-saving irrigation method according to the present invention;
fig. 4 is a connection block diagram of an energy-saving irrigation system based on well electricity double control.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the problem of water source energy waste caused by irrigation of a plurality of motor-pumped wells due to large-area irrigation requirements in the prior art. According to a first aspect of the present invention, there is provided an energy-saving irrigation method based on well electricity double control, as shown in fig. 1, comprising the steps of:
step S1: acquiring climate information, soil information and crop information of an irrigation site, and predicting target water consumption of the irrigation site;
step S2: marking the positions of a plurality of motor-pumped wells on the irrigation area, and screening out a plurality of motor-pumped wells with a distance suitable for irrigation;
step S3: acquiring well diameters and well depths of a plurality of motor-pumped wells, and predicting pumping energy consumption of a water pump corresponding to the motor-pumped wells in unit time;
step S4: based on pumping energy consumption of a water pump corresponding to the motor-pumped wells in unit time, and combining the topography and soil conditions of the motor-pumped wells, predicting and obtaining irrigation energy consumption of the motor-pumped wells in unit time;
step S5: establishing a first formula related to irrigation time based on the target water consumption of the irrigation site and the unit time flow of the motor-pumped wells;
step S6: establishing a second formula related to the total irrigation energy consumption of the irrigation place based on the irrigation energy consumption of the motor-pumped wells in unit time and in combination with the irrigation time;
step S7: and determining the irrigation time of different motor-pumped wells under energy-saving irrigation based on the first formula and the second formula.
After the energy-saving irrigation time of different motor-pumped wells is determined, the different motor-pumped wells irrigate to the irrigation site according to the irrigation time, so that the large-area irrigation requirement can be met, and energy is saved. The method has the advantages that the reference of the irrigation time is provided for each motor-pumped well, so that a plurality of motor-pumped wells can irrigate water according to the referenced irrigation time, and the problem of water source energy waste caused by non-controlled irrigation of the motor-pumped wells is avoided.
The irrigation energy consumption comprises water pumping energy consumption and running water energy consumption, not only the energy consumption of the water pump is considered, but also the energy consumption generated by the motor-pumped well when the motor-pumped well flows to the irrigation place is considered, and the irrigation energy consumption is comprehensively considered. According to the irrigation energy consumption of each motor-pumped well, when the motor-pumped wells are started simultaneously, different irrigation time is controlled, so that the total energy consumption generated by the motor-pumped wells is greatly reduced, the irrigation cost is saved, and the irrigation efficiency is improved.
As shown in fig. 2, in step S1, climate information and soil information of an irrigation site are obtained, and a target water consumption of the irrigation site is predicted, which specifically includes the following steps:
step S101: acquiring the water content of soil of a place where irrigation is located;
step S102: obtaining precipitation and vapor evaporation of irrigation places in a plurality of time periods;
step S103: obtaining the crop type of the irrigation place;
step S104: and predicting the target water consumption of the irrigation site based on the first prediction evaluation model.
The first predictive evaluation model is:
wherein Q is the target water consumption of the irrigation site, theta 1 Is the saturation quantity of soil water, theta 2 For the water content of the soil of the irrigation site, x is the coefficient corresponding to the crop type of the irrigation site, eta 1 For the average precipitation of irrigation sites over a plurality of time periods, eta 2 Water vapor evaporation for a plurality of time periods at the irrigation site.
Irrigation water consumption refers to the amount of water supplied to farmlands by an irrigation system over a period of time, which is an important parameter in the irrigation work. The amount of irrigation water directly affects the growth and development of crops. The irrigation water consumption is calculated according to the water content of the soil. The precipitation and vapor evaporation in the normal time of irrigation of the land can influence the water content of the soil, and the influence factors on the water content of the soil can be fully considered. Meanwhile, the water quantity required by different types of crops on soil is different, for example, the water crops such as rice and the like have larger requirement on soil moisture, and the land crops such as corn and wheat and the like have smaller requirement on soil moisture.
In step S3, the pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time is predicted by a second prediction evaluation model, where the second prediction evaluation model is:
wherein C is i The pumping energy consumption of the water pump corresponding to the ith motor-pumped well in unit time lambda i For the energy consumption coefficient of the ith motor-pumped well corresponding to the operation of the water pump, r i Is the wellhead diameter of the ith motor-pumped well, H i And g is the gravity acceleration, and i is the number of the screened motor-pumped wells.
And predicting the pumping energy consumption corresponding to each motor-pumped well according to the second prediction evaluation model, wherein the deeper the wellhead of the motor-pumped well is, the larger the energy consumed by pumping is.
As shown in fig. 3, in step S4, based on pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time, and combining the terrain and soil conditions of the motor-pumped well, irrigation energy consumption of a plurality of motor-pumped wells in unit time is predicted, and specifically includes the following steps:
step S401: obtaining the predicted pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time;
step S402: acquiring the gradient of the land where the motor-pumped well is located, and determining the land potential energy of the land where the motor-pumped well is located;
step S403: acquiring soil pores of the place where the motor-pumped well is located, and determining the running water speed of the place where the motor-pumped well is located;
step S404: based on the running water speed and the land profile energy of the place where the motor-pumped well is located, predicting the running water energy consumption of the place where the motor-pumped well is located according to a third prediction evaluation model;
step S405: and adding the water pumping energy consumption and the running water energy consumption to obtain the irrigation energy consumption of the motor-pumped well in unit time.
The third predictive evaluation model is:
S i ＝K 1 E i (sinα i )+K 2 V i (W i )；
wherein S is i For the running water energy consumption of the place where the ith motor-pumped well is located, alpha i Is the gradient of the place where the ith motor-pumped well is located, R i (Sinα i ) K is a preset function of the potential energy of the land where the ith motor-pumped well is located 1 Is the preset weight of the potential energy of the land, W i Is the soil pore of the i-th motor-pumped well, V i (w i ) K is a preset function of the running water speed of the ith motor-pumped well 2 And i is the number of the screened motor-pumped wells for the preset weight of the running water speed.
The farmland is generally a farmland with a gradient. The water pumping energy consumption of the motor-pumped well water pump is considered, and the gradient and the running water speed of the water flow in the motor-pumped well to the irrigation place are also considered. If the slope of the place where the motor-pumped well is located is higher, the running water speed is higher, and the water flows into the farmland along the gravitational potential energy, so that the motor-pumped well can irrigate the farmland correspondingly and rapidly; if the slope of the motor-pumped well is low and the running water speed is low, the larger gravitational potential energy needs to be overcome, and the motor-pumped well correspondingly irrigates farmlands slowly.
In actual irrigation, pumping energy consumption of a motor-pumped well is high, but the condition that the gradient of the motor-pumped well is suitable for irrigation occurs, so that the energy consumption of the motor-pumped well cannot be evaluated simply from one aspect. And adding the water pumping energy consumption and the running water energy consumption to obtain the irrigation energy consumption of the motor-pumped well in unit time.
The first formula is:
Q＝q 1 t 1 +q 2 t2+......+q i t i ；
wherein Q is the target water consumption of the irrigation site, Q i Is the flow rate of the ith motor-pumped well in unit time, t i And (3) the irrigation time of the ith motor-pumped well, wherein i is the number of the screened motor-pumped wells.
The second formula is:
W＝P 1 t 1 +P 2 t 2 +……+P i t i ；
wherein W is the total irrigation energy consumption of the irrigation site, and P i Energy consumption for irrigation per unit time of ith motor-pumped well, t i And (3) the irrigation time of the ith motor-pumped well, wherein i is the number of the screened motor-pumped wells.
The target water consumption and the unit time flow of each motor-pumped well in the first formula are known, and the expression of the irrigation time of each motor-pumped well can be obtained. The irrigation energy consumption of each motor-pumped well in unit time is known in the second formula, and expressions of the irrigation time of different motor-pumped wells are substituted into the second formula, so that the irrigation time of each motor-pumped well is calculated under the condition that the total irrigation energy consumption of the irrigation place is the lowest, and the energy saving purpose is achieved.
According to a second aspect of the present invention, there is provided an energy-saving irrigation system based on well electricity double control, for implementing an energy-saving irrigation method based on well electricity double control, as shown in fig. 4, comprising:
the first information acquisition unit is used for acquiring climate information, soil information and crop information of the irrigation site;
the first prediction unit is used for predicting the target water consumption of the irrigation site;
the screening unit is used for marking the positions of the motor-pumped wells on the irrigation area and screening out the motor-pumped wells with the distances suitable for the irrigation place;
the second information acquisition unit is used for acquiring the well diameters and the well depths of the motor-pumped wells;
the second prediction unit is used for predicting pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time;
the third prediction unit is used for predicting and evaluating the irrigation energy consumption of the motor-pumped wells in unit time based on the water pumping energy consumption of the water pump corresponding to the motor-pumped wells in unit time in combination with the terrain and soil conditions of the motor-pumped wells;
the first information processing unit is used for establishing a first formula related to irrigation time based on the target water consumption of the irrigation site and the unit time flow of the motor-pumped wells;
the second information processing unit is used for establishing a second formula related to the total irrigation energy consumption of the irrigation place based on the irrigation energy consumption of the motor-pumped wells in unit time and combining the irrigation time;
and the feedback unit is used for determining the irrigation time of different motor-pumped wells under energy-saving irrigation.
The first information acquisition unit acquires climate information, soil information and crop information of a place where irrigation is located. The first prediction unit predicts a target water consumption of the irrigation site. And marking the positions of a plurality of motor-pumped wells on the irrigation area, and screening the plurality of motor-pumped wells with a distance suitable for irrigation. The second information acquisition unit acquires the well diameters and the well depths of the plurality of motor wells. The second prediction unit predicts the pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time. The third prediction unit predicts and obtains irrigation energy consumption of the motor-pumped wells in unit time based on water pumping energy consumption of the water pump corresponding to the motor-pumped wells in unit time and combining the terrain and soil conditions of the motor-pumped wells.
The first information processing unit establishes a first formula related to irrigation time based on a target water consumption of the irrigation site and unit time flow rates of the plurality of motor-wells. The second information processing unit establishes a second formula related to the total irrigation energy consumption of the irrigation place based on the irrigation energy consumption of the motor-pumped wells in unit time and in combination with the irrigation time. Based on the first formula and the second formula, the feedback unit determines irrigation time of different motor-pumped wells under energy-saving irrigation. After the irrigation time of different motor-pumped wells under energy-saving irrigation is determined, the different motor-pumped wells irrigate the land where the motor-pumped wells are located according to the irrigation time, so that the large-area irrigation requirement can be met, and energy is saved.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (5)
1. An energy-saving irrigation method based on well electricity double control is characterized by comprising the following steps:
step S1: acquiring climate information, soil information and crop information of an irrigation site, and predicting target water consumption of the irrigation site;
step S2: marking the positions of a plurality of motor-pumped wells on a irrigated area, and screening out a plurality of motor-pumped wells with distances suitable for the irrigation place;
step S3: acquiring well diameters and well depths of a plurality of motor-pumped wells, and predicting pumping energy consumption of a water pump corresponding to the motor-pumped wells in unit time;
step S4: based on pumping energy consumption of a water pump corresponding to the motor-pumped well in unit time, and combining the topography and soil conditions of the motor-pumped well, predicting and obtaining irrigation energy consumption of a plurality of motor-pumped wells in unit time;
step S5: establishing a first formula related to irrigation time based on the target water consumption of the irrigation site and the unit time flow of a plurality of motor-pumped wells;
step S6: establishing a second formula related to the total irrigation energy consumption of the places where irrigation is located based on the irrigation energy consumption of a plurality of motor-pumped wells in unit time and combining the irrigation time;
step S7: determining irrigation time of different motor-pumped wells under energy-saving irrigation based on the first formula and the second formula;
in the step S1, climate information and soil information of an irrigation site are obtained, and a target water consumption of the irrigation site is predicted, and the method specifically comprises the following steps:
step S101: acquiring the water content of soil of the irrigation place;
step S102: obtaining precipitation and vapor evaporation of the irrigation place in a plurality of time periods;
step S103: acquiring the crop type of the irrigation site;
step S104: predicting and obtaining the target water consumption of the irrigation site based on a first prediction evaluation model;
in the step S3, the pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time is predicted by a second prediction evaluation model, where the second prediction evaluation model is:
wherein C is i The pumping energy consumption of the water pump corresponding to the ith motor-pumped well in unit time lambda i For the energy consumption coefficient of the ith motor-pumped well corresponding to the operation of the water pump, r i Is the wellhead diameter of the ith motor-pumped well, H i G is the gravity acceleration, i is the number of the screened motor-pumped wells;
in step S4, based on pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time, and combining the topography and the soil condition of the motor-pumped well, the irrigation energy consumption of a plurality of motor-pumped wells in unit time is predicted, and the method specifically comprises the following steps:
step S401: obtaining the predicted pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time;
step S402: acquiring the gradient of the land where the motor-pumped well is located, and determining the land potential energy of the land where the motor-pumped well is located;
step S403: acquiring soil pores of the place where the motor-pumped well is located, and determining the running water speed of the place where the motor-pumped well is located;
step S404: based on the running water speed and the land potential energy of the place where the motor-pumped well is located, predicting the running water energy consumption of the place where the motor-pumped well is located according to a third prediction evaluation model;
step S405: adding the pumping energy consumption and the running water energy consumption to obtain the irrigation energy consumption of the motor-pumped well in unit time;
the first formula is:
Q＝q 1 t 1 +q 2 t 2 +……+q 1 t i ；
wherein Q is the target water consumption of the irrigation site, Q i Is the flow rate of the ith motor-pumped well in unit time, t i The irrigation time of the ith motor-pumped well is the irrigation time, i is the number of the motor-pumped wells screened out;
the second formula is:
W＝P 1 t 1 +P 2 t 2 +……+P i t i ；
wherein W is the total irrigation energy consumption of the irrigation site, and P i Energy consumption for irrigation per unit time of ith motor-pumped well, t i And (3) the irrigation time of the ith motor-pumped well, wherein i is the number of the screened motor-pumped wells.
2. The energy-saving irrigation method based on well electricity double control as claimed in claim 1, wherein the first predictive evaluation model is:
wherein Q is the target water consumption of the irrigation site, theta 1 Is the saturation quantity of soil water, theta 2 For the water content of the soil of the irrigation site, x is the coefficient corresponding to the crop type of the irrigation site, eta 1 For the average precipitation of irrigation sites over a plurality of time periods, eta 2 Water vapor evaporation for a plurality of time periods at the irrigation site.
3. The energy-saving irrigation method based on well electricity double control as claimed in claim 1, wherein the third predictive evaluation model is:
S i ＝K 1 E i (sinα i )+K 2 V i (w i )；
wherein S is i For the running water energy consumption of the place where the ith motor-pumped well is located, alpha i Is the gradient of the place where the ith motor-pumped well is located, E i (sinα i ) K is a preset function of the potential energy of the land where the ith motor-pumped well is located 1 Is the preset weight of the potential energy of the land, W i Is the soil pore of the i-th motor-pumped well, V i (w i ) K is a preset function of the running water speed of the ith motor-pumped well 2 And i is the number of the screened motor-pumped wells for the preset weight of the running water speed.
4. The energy-saving irrigation method based on well electric double control according to claim 1, wherein in the step S7, after determining the irrigation time of different motor-wells under energy-saving irrigation, the different motor-wells irrigate the place where the irrigation is located according to the irrigation time.
5. An energy-saving irrigation system based on well electricity double control, for implementing the energy-saving irrigation method based on well electricity double control according to any one of claims 1 to 4, comprising:
the first information acquisition unit is used for acquiring climate information, soil information and crop information of the irrigation site;
the first prediction unit is used for predicting the target water consumption of the irrigation site;
the screening unit is used for marking the positions of the motor-pumped wells on the irrigation area and screening out the motor-pumped wells with the distances suitable for the irrigation place;
the second information acquisition unit is used for acquiring the well diameters and the well depths of the motor-pumped wells;
the second prediction unit is used for predicting the pumping energy consumption of the water pump corresponding to the motor-pumped well in unit time;
the third prediction unit is used for predicting and evaluating irrigation energy consumption of a plurality of motor-pumped wells in unit time based on pumping energy consumption of the water pump corresponding to the motor-pumped wells in unit time in combination with the terrain and soil conditions of the motor-pumped wells;
the first information processing unit is used for establishing a first formula related to irrigation time based on the target water consumption of the irrigation site and the unit time flow of a plurality of motor-pumped wells;
the second information processing unit is used for establishing a second formula related to the total irrigation energy consumption of the irrigation places based on the irrigation energy consumption of a plurality of motor-pumped wells in unit time and combining the irrigation time;
and the feedback unit is used for determining the irrigation time of different motor-pumped wells under energy-saving irrigation.
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