CN116771653A - Control method of multi-pump intelligent water pumping system - Google Patents
Control method of multi-pump intelligent water pumping system Download PDFInfo
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- CN116771653A CN116771653A CN202310718102.6A CN202310718102A CN116771653A CN 116771653 A CN116771653 A CN 116771653A CN 202310718102 A CN202310718102 A CN 202310718102A CN 116771653 A CN116771653 A CN 116771653A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 238000005086 pumping Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008859 change Effects 0.000 claims abstract description 12
- 238000003062 neural network model Methods 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 238000005286 illumination Methods 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000007405 data analysis Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 4
- 230000002262 irrigation Effects 0.000 description 4
- 238000003973 irrigation Methods 0.000 description 4
- 238000013528 artificial neural network Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- F04B49/02—Stopping, starting, unloading or idling control
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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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/006—Solar operated
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
- H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides a control method of a multi-pump intelligent pumping system, which comprises a photovoltaic array formed by at least two groups of subarrays, a switching device, at least two sets of inverters, a water pump and a central controller, wherein the water pump is connected with the photovoltaic array; the output end of the subarray is connected with the input end of the switching device to form the photovoltaic array; the output ends of the switching devices are connected with the input ends of the at least two sets of inverters; the output ends of the at least two sets of inverters are connected with the water pump; the central controller is respectively in communication connection with the at least two sets of inverters and the switching device; the switching device is used for changing the serial-parallel connection relation of the subarrays according to the change of the output voltage of the photovoltaic array and switching the structure of the photovoltaic array; the central controller generates control instructions according to the operation data of the photovoltaic array and the water pump, and respectively controls the switching device to work and the water pump to start and stop, so that the working time of the photovoltaic array under low illumination and the working time of the pumping system are prolonged, and the efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of photovoltaic water pumping systems, and particularly relates to a control method of a multi-pump intelligent water pumping system.
Background
In recent years, photovoltaic pumping systems have been increasingly widely studied and used. The photovoltaic pumping system consists of an inverter, a photovoltaic array, a water pump and the like. The application fields mainly include photovoltaic agricultural water-saving irrigation, photovoltaic irrigation desert control, photovoltaic water conservancy drought resistance and water lifting, improvement of photovoltaic drip irrigation saline-alkali soil, photovoltaic infiltrating irrigation grassland pasture, photovoltaic urban water landscape, photovoltaic village living water supply, photovoltaic sea water desalination and the like.
However, the photovoltaic pumping system is affected by the change of illumination intensity, when the illumination intensity is weak, the power of the photovoltaic array is reduced, the water pump operates at a lower rotating speed, the efficiency is low, even the machine is stopped, the working is impossible, and the power waste is caused. Therefore, a multi-pump photovoltaic water pumping system is proposed, namely, one set of photovoltaic array drives a plurality of sets of water pumps to work, and the number of running water pumps is changed according to illumination intensity change in the working process. However, due to communication delay, system errors, and other factors, the multi-pump system is easy to cause failure to track the maximum power of the photovoltaic array, resulting in low efficiency and even system breakdown.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a control method of a multi-pump intelligent pumping system.
In order to achieve the above purpose, in one aspect, the present invention provides a multi-pump intelligent pumping system, which comprises a photovoltaic array composed of at least two groups of subarrays, a switching device, at least two sets of inverters, a water pump and a central controller; the output end of the subarray is connected with the input end of the switching device to form the photovoltaic array; the output ends of the switching devices are connected with the input ends of the at least two sets of inverters; the output ends of the at least two sets of inverters are connected with the water pump; the central controller is respectively in communication connection with the at least two sets of inverters and the switching device; the switching device is used for changing the serial-parallel connection relation of the subarrays according to the change of the output voltage of the photovoltaic array and switching the structure of the photovoltaic array; the central controller is used for generating control instructions according to the operation data of the photovoltaic array and the water pump, and controlling the switching device to work and the water pump to start and stop respectively.
Further, the switching device comprises a controller and a switching circuit; the subarrays are connected in parallel through the switching circuit; the controller receives a control instruction of the central controller, and controls the switching circuit to change the connection structure of the subarray from parallel connection to serial connection or from serial connection to parallel connection.
Further, the central controller comprises a data acquisition module, a data analysis module and a scheduling strategy module; the data acquisition module is used for acquiring the operation data of each subarray and the operation data of each water pump; the data analysis module receives and analyzes the operation data acquired by the data acquisition module and transmits an analysis result to the scheduling policy module; and the scheduling strategy module generates a control instruction according to the analysis result of the data analysis module, and controls the switching device to work and the water pump to start and stop respectively.
Further, the operation data of each subarray comprises output voltage and output current of each subarray; the operation data of each water pump comprises operation frequency, operation power and flow.
Further, the inverter converts direct current output by the photovoltaic array into alternating current, drives the water pump and performs maximum power point tracking.
In one aspect, the invention provides a control method of a multi-pump intelligent pumping system, comprising the following steps: the system comprises a photovoltaic array formed by at least two groups of subarrays, a switching device, at least two sets of inverters, a water pump and a central controller;
the central controller presets an output voltage threshold of the photovoltaic array, acquires output voltage and output current of each subarray in real time, and calculates output power of the photovoltaic array;
when the output voltage of the photovoltaic array is smaller than the output voltage threshold, the central controller controls the switching device to work, and the structure of the photovoltaic array is changed;
the output voltage of the photovoltaic array is converted into alternating voltage through the inverter, and the alternating voltage is output to each water pump;
the central controller collects the operation frequency, the operation power and the flow of each water pump in real time, and combines the operation frequency, the operation power and the flow of each water pump to generate a scheduling strategy to control the opening quantity of the water pumps in the system.
Further, the output voltage threshold is set according to the lowest rated power of the water pump.
Further, the changing the structure of the photovoltaic array includes changing the parallel connection of the subarrays to serial connection or changing the serial connection of the subarrays to parallel connection.
Further, the operation frequency, operation power and flow rate generating and scheduling strategy of the water pumps comprises the following steps: calculating the output power of the photovoltaic array in real time, and controlling a water pump to work by the central controller when the output power is smaller than a first power threshold value; when the output power is greater than or equal to a first power threshold value, the central controller starts two water pumps to work;
collecting the operation frequency of the water pumps in real time, and reducing the operation of one water pump by the central controller when the operation frequency of the water pumps is smaller than a first frequency threshold value when the two water pumps operate; when the running frequency is greater than or equal to a first frequency threshold, the central controller starts two water pumps to work; and when the operation frequency of the water pump is smaller than the second frequency threshold, the central controller controls the switching device to work so as to change the structure of the photovoltaic array.
Further, the operation frequency, operation power and flow rate generating and scheduling strategy of the water pumps can further include: and constructing a self-adaptive fuzzy neural network model in the central controller, inputting the photovoltaic array data and the water pump operation data acquired in real time into the model, and generating a scheduling strategy.
In summary, the invention has the following beneficial effects: monitoring a pumping system by collecting photovoltaic array data and water pump operation data in real time, generating a scheduling strategy by a central controller according to the collected data, starting and stopping the system water pumps, and adjusting the number of the system water pumps to ensure that the system maintains optimal pumping efficiency; by changing the connection structure of the photovoltaic array, the working time of the photovoltaic array under low illumination is prolonged, the working time of the system is prolonged, and the operation efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a multi-pump intelligent pumping system;
FIG. 2 is a schematic diagram of a central controller;
FIG. 3 is a flow chart of a control method of the multi-pump intelligent pumping system;
fig. 4 is a flow chart of a sub-array control method.
Reference numerals illustrate: 1 photovoltaic array, 11 subarrays, 12 subarrays two, 2 switching devices, 3 inverter, 31 inverter one, 32 inverter two, 4 water pump, 41 water pump one, 42 water pump two, 5 central controller, 51 data acquisition module, 52 data analysis module and 53 scheduling strategy module
Detailed Description
The present invention will be described in further detail with reference to the preferred embodiments and the accompanying drawings. It is apparent that the examples described below are only for explaining the present invention, not limiting the present invention. 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.
Example 1
As shown in fig. 1, the multi-pump intelligent water pumping system comprises a photovoltaic array 1, a switching device 2, an inverter 3, a water pump 4 and a central controller 5; the photovoltaic array 1 comprises a first subarray 11 and a second subarray 12; the inverter 3 comprises an inverter I31 and an inverter II 32; the water pump 4 comprises a first water pump 41 and a second water pump 42;
the output ends of the first subarray 11 and the second subarray 12 are connected with the input end of the switching device 2 to form the photovoltaic array 1; the output end of the switching device 2 is connected with the input ends of the first inverter 31 and the second inverter 32; the output end of the inverter I31 is connected with the input end of the water pump I41, and the output end of the inverter I32 is connected with the input end of the water pump I42; the central controller 5 is respectively in communication connection with the first inverter 31, the second inverter 32 and the switching device 2; the switching device 2 is configured to change a connection relationship between the first sub-array 11 and the second sub-array 12 according to a change of an output voltage of the photovoltaic array 1, so as to switch a structure of the photovoltaic array 1; the central controller 5 is configured to generate a control instruction according to the operation data of the photovoltaic array 1 and the water pump 4, and control the switching device 2 to work and the water pump 4 to start and stop respectively.
The switching device 2 comprises a controller and a switching circuit; the subarray I11 and the subarray II 12 are connected in parallel through the switching circuit; the controller receives a control instruction of the central controller 5 and controls the switching circuit to change the connection structure of the subarray from parallel connection to serial connection or from serial connection to parallel connection.
As shown in fig. 2, the central controller 5 includes a data acquisition module 51, a data analysis module 52, and a scheduling policy module 53; the data acquisition module 51 is used for acquiring operation data of each subarray and operation data of each water pump; the data analysis module 52 receives and analyzes the operation data acquired by the data acquisition module 51, and transmits the analysis result to the scheduling policy module 53; the scheduling policy module 53 generates a control instruction according to the analysis result of the data analysis module, and controls the switching device 2 to work and the water pump 4 to start and stop respectively.
The operation data of each subarray comprises output voltage and output current of each subarray; the operation data of each water pump comprises operation frequency, operation power and flow.
The inverter 3 converts direct current output by the photovoltaic array 1 into alternating current, drives the water pump 4, and performs maximum power point tracking.
The control method of the multi-pump intelligent water pumping system is applied to the multi-pump intelligent water pumping system shown in figure 1.
Specifically, the central controller 5 presets an output voltage threshold of the photovoltaic array 1, collects output voltages and output currents of the subarrays in real time, and calculates output power of the photovoltaic array 1;
when the output voltage of the photovoltaic array 1 is smaller than the output voltage threshold, the central controller 5 controls the switching device 2 to work, and the structure of the photovoltaic array 1 is changed;
the output voltage of the photovoltaic array 1 is converted into alternating voltage through the inverter 3, and the alternating voltage is output to each water pump 4;
the central controller 5 collects the operation frequency, the operation power and the flow of each water pump 4 in real time, and generates a scheduling strategy by combining the operation frequency, the operation power and the flow of each water pump 4 to control the opening quantity of the water pumps 4 in the system.
More specifically, the flow of the control method of the multi-pump intelligent pumping system comprises the following steps:
s1, starting a system, wherein the central controller 5 collects operation parameters of the photovoltaic array 1 and the water pump 4; the operation parameters of the photovoltaic array 1 comprise output voltage and output current of each subarray; the operation parameters of the water pump 4 include the operation frequency, the operation power and the flow rate of each water pump.
S2, the central controller 5 calculates the output power of the photovoltaic array 1 and compares the output power with a preset first power threshold value, and when the output power is greater than or equal to the first power threshold value, two water pumps 4 are started and the operation parameters of the water pumps 4 are collected; when the output power is smaller than the first power threshold, a water pump 4 is started, and the operation parameters of the water pump 4 are collected.
S3, when the two water pumps 4 are started, according to the collected operation parameters of the water pumps 4, the central controller 5 compares the operation frequency of the water pumps 4 with a first frequency threshold value, and when the operation frequency is smaller than the first frequency threshold value, one water pump is reduced to work; when the operating frequency is greater than or equal to a first frequency threshold, the two water pumps are kept to work.
S4, when one water pump 4 is started, according to the collected operation parameters of the water pump 4, the central controller 5 compares the operation frequency of the water pump 4 with a first frequency threshold, and when the operation frequency is greater than or equal to the first frequency threshold, one water pump is added to work; when the operation frequency is smaller than the first frequency threshold value, the process proceeds to step S5.
S5, comparing the operation frequency of the water pump 4 with a second frequency threshold by the central controller 5, and controlling the switching device 2 to work by the central controller 5 when the operation frequency is smaller than the second frequency threshold so as to change the structure of the photovoltaic array 1; and when the operating frequency is greater than or equal to the second frequency threshold, keeping the water pump working.
The first power threshold, the first frequency threshold, and the second frequency threshold may be empirically set, such as the first power threshold being set to 0.6 times the total rated power of the water pump; the first frequency threshold is set to be 0.8 times of rated frequency of a single water pump; the second frequency threshold is set to 0.5 times the rated frequency of the single water pump.
In addition, the selection of the first power threshold value, the first frequency threshold value and the second frequency threshold value can be used for calculating the optimal switching threshold value of the water pump by establishing a mathematical model of the water pump.
Specifically, the mathematical model for starting different numbers of water pumps in the system is as follows
Wherein k is the number of working water pumps;the total flow of k water pumps working at the rotating speed n is shown; h N 、Q N The rated lift and rated flow of the water pump are represented; />Representing the total lift of k water pumps when working at the rotating speed of n; n is the rated rotation speed of the water pump.
The above formula shows the relationship between the operation frequency of the water pump and the input power when k water pumps work at the rotation speed n.
Setting the input power and the total flow to be unchanged before and after the number of the water pumps is switched, namely
The frequency and the power of the switching of the k water pumps and the j water pumps can be calculated, and the frequency and the power can be used as the threshold value for switching the number of the system water pumps.
As shown in fig. 4, step S1 further includes: s11, after the system is started, the central controller collects output voltages of all subarrays;
s12, comparing the output voltage with a preset first voltage threshold, and when the output voltage is smaller than the first voltage threshold, controlling the switching device to work by the central controller so as to change the structure of the photovoltaic array; then starting a water pump and collecting the operation parameters of the water pump;
and S13, calculating the output power of the photovoltaic array 1 when the output voltage is not smaller than the first voltage threshold value.
The output voltage threshold may be set according to the lowest rated power of the individual water pumps.
The changing the structure of the photovoltaic array comprises changing the subarrays from parallel connection to serial connection or changing the subarrays from serial connection to parallel connection.
Example two
In the multi-pump intelligent water pumping system, more than two subarrays of the photovoltaic array 1 can be formed; the number of water pumps working in parallel may also be more than two.
Example III
Further, when there are more than two sub-photovoltaic arrays and more than two water pumps working in parallel, in order to make the system scheduling strategy better, the control method of the multi-pump intelligent pumping system of the invention may further include: an adaptive fuzzy neural network model is arranged in the central controller 5, and data of the photovoltaic array 1 and operation data of the water pump 4 acquired in real time are input into the model to generate a scheduling strategy.
Specifically, input and output data of the multi-pump intelligent pumping system are collected, screened and arranged to obtain a typical sample set. A typical sample set is as follows:
(P m ，Q m ，x m )，m＝1，2，……，18
wherein n is the number of groups of collected data; p is the difference between the output power of the photovoltaic array and the total running power of the water pump; q is the total flow of the water pump; x is the number of water pumps operated.
The step of summarizing the initial fuzzy rule according to the typical sample set is as follows:
(1) Determining a fuzzy universe according to the sample group;
(2) Modeling paste rules according to the sample organization;
(3) Determining the strength of the fuzzy rule according to the principle of 'leave-big and leave-small';
(4) And determining a fuzzy rule table, wherein 25 fuzzy rules can be obtained by covering the two input single outputs with 5 fuzzy subsets as shown in the following table.
Table 1 Multi-Pump Intelligent Water-lifting fuzzy control rules
And then constructing a network structure of the multi-pump intelligent pumping system according to the self-adaptive fuzzy neural network structure, taking the sample set P, Q as input and x as output, and training the fuzzy neural network system. In the operation of the multi-pump intelligent water pumping system, the central controller obtains the output power of the photovoltaic array and the total flow of the water pump, and inputs the output power and the total flow of the water pump into the fuzzy neural network system to obtain a water pump scheduling strategy and control the start and stop of the water pump.
It should be noted that, for the sake of simplicity of description, the foregoing method embodiments are all expressed as a series of combinations of actions, but it should be understood by those skilled in the art that the present invention is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present invention. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present invention are shown in the accompanying drawings.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. The control method of the multi-pump intelligent water pumping system is characterized by comprising the following steps of: the system comprises a photovoltaic array formed by at least two groups of subarrays, a switching device, at least two sets of inverters, a water pump and a central controller;
the central controller presets an output voltage threshold of the photovoltaic array, acquires output voltage and output current of each subarray in real time, and calculates output power of the photovoltaic array;
when the output voltage of the photovoltaic array is smaller than the output voltage threshold, the central controller controls the switching device to work, and the structure of the photovoltaic array is changed;
the output voltage of the photovoltaic array is converted into alternating voltage through the inverter, and the alternating voltage is output to each water pump;
the central controller collects the operation frequency, the operation power and the flow of each water pump in real time, and combines the operation frequency, the operation power and the flow of each water pump to generate a scheduling strategy to control the opening quantity of the water pumps in the system.
2. The method of controlling a multi-pump intelligent pumping system according to claim 1, wherein the output voltage threshold is set according to a minimum rated power of the individual water pumps.
3. The method of claim 2, wherein said changing the structure of the photovoltaic array comprises changing the sub-arrays from parallel to serial or from serial to parallel.
4. The method for controlling a multi-pump intelligent pumping system according to claim 2, wherein the scheduling strategy for generating the operating frequency, the operating power and the flow rate of each water pump comprises: calculating the output power of the photovoltaic array in real time, and controlling a water pump to work by the central controller when the output power is smaller than a first power threshold value; when the output power is greater than or equal to a first power threshold value, the central controller starts two water pumps to work;
collecting the operation frequency of the water pumps in real time, and reducing the operation of one water pump by the central controller when the operation frequency of the water pumps is smaller than a first frequency threshold value when the two water pumps operate; when the running frequency is greater than or equal to a first frequency threshold, the central controller starts two water pumps to work; and when the operation frequency of the water pump is smaller than the second frequency threshold, the central controller controls the switching device to work so as to change the structure of the photovoltaic array.
5. The method for controlling a multi-pump intelligent pumping system according to claim 2, wherein the scheduling strategy for generating the operating frequency, the operating power and the flow rate of each water pump comprises: and constructing a self-adaptive fuzzy neural network model in the central controller, inputting the photovoltaic array data and the water pump operation data acquired in real time into the model, and generating a scheduling strategy.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117130280A (en) * | 2023-09-25 | 2023-11-28 | 南栖仙策(南京)高新技术有限公司 | Pump room control method and device, electronic equipment and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117130280A (en) * | 2023-09-25 | 2023-11-28 | 南栖仙策(南京)高新技术有限公司 | Pump room control method and device, electronic equipment and storage medium |
| CN117130280B (en) * | 2023-09-25 | 2024-03-15 | 南栖仙策(南京)高新技术有限公司 | Pump room control method and device, electronic equipment and storage medium |
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