CN103583319A - Novel control system of solar pumping irrigation station and implementation method thereof - Google Patents
Novel control system of solar pumping irrigation station and implementation method thereof Download PDFInfo
- Publication number
- CN103583319A CN103583319A CN201310535639.5A CN201310535639A CN103583319A CN 103583319 A CN103583319 A CN 103583319A CN 201310535639 A CN201310535639 A CN 201310535639A CN 103583319 A CN103583319 A CN 103583319A
- Authority
- CN
- China
- Prior art keywords
- irrigation
- power generation
- plc
- generation system
- environmental parameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003973 irrigation Methods 0.000 title claims abstract description 199
- 230000002262 irrigation Effects 0.000 title claims abstract description 199
- 238000005086 pumping Methods 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010248 power generation Methods 0.000 claims abstract description 92
- 230000007613 environmental effect Effects 0.000 claims abstract description 81
- 239000007788 liquid Substances 0.000 claims description 21
- 230000007958 sleep Effects 0.000 claims description 21
- 238000005286 illumination Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 26
- 238000004891 communication Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 11
- 238000007711 solidification Methods 0.000 description 8
- 230000008023 solidification Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention provides a novel control system of a solar pumping irrigation station and an implementation method of the novel control system of the solar pumping irrigation station. The novel control system of the solar pumping irrigation station comprises a control system body with a PLC, wherein the control system body has control over a power generation system and an pumping irrigation system, an input interface of the PLC is used for receiving a first environmental parameter signal of the external environment, and a second environmental parameter signal sent by a photovoltaic inverter of the power generation system, a judgment module of the PLC is used for judging whether the first environmental parameter signal and the second environmental parameter signal meet the set start or stop conditions of the power generation system and/or the pumping irrigation system or not, and an output interface of the PLC is used for outputting a starting or stopping signal to the power generation system or the pumping irrigation system according to the judgment result of the judgment module so as to control the power generation system and/or the pumping irrigation system to be started or stopped. According to the novel control system of the solar pumping irrigation station and the implementation method of the novel control system of the solar pumping irrigation station, flexibility and applicability of the control system of the solar pumping irrigation station can be improved.
Description
Technical Field
The invention relates to the technical field of solar irrigation and raising, in particular to a novel solar irrigation and raising station control system and an implementation method thereof.
Background
The solar irrigation station is used as an important agricultural infrastructure and provides water for agricultural production and life. The solar irrigation station mainly comprises a solar power generation system and an irrigation system. The solar power generation system comprises a solar cell panel, a photovoltaic controller and a photovoltaic inverter; the irrigation system mainly comprises a water pump unit, a pipeline, a control room and a reservoir. Wherein, the water pump unit mainly includes immersible pump and motor. The solar panel converts the collected solar energy into direct current, inputs the direct current into the photovoltaic controller, and converts the direct current into alternating current of AC380V through the photovoltaic inverter so as to provide power for the water pump unit. The water pump unit pressurizes water and then sends the water into the pipeline, the water is conveyed to the large-capacity reservoir, water is directly taken from the reservoir when the water is used, and the solar pumping irrigation station has an automatic water diversion function. The solar pumping irrigation station is an effective exploration for new energy development and utilization and is a beneficial supplement for the electric pumping irrigation station.
The control system of the solar pumping irrigation station is the core of the solar pumping irrigation station, and at present, the existing solar pumping irrigation station mostly adopts a single chip microcomputer control system to realize the control of the whole solar pumping irrigation station. The single chip microcomputer control system realizes the control of the solar pumping irrigation station according to the programmed control program by programming the control program into the single chip microcomputer. However, the programming mode enables the control of all solar pumping irrigation stations adopting the singlechip control system to be fixed and single, and the control cannot be flexibly changed according to actual conditions. If the solar pumping irrigation station updates equipment or the equipment is not suitable for a corresponding single chip microcomputer control system, the single chip microcomputer control system cannot be used.
Therefore, on one hand, the existing control system for controlling the solar pumping irrigation station has the advantages of function solidification and poor system flexibility; on the other hand, the applicability is poor, if the single chip microcomputer is not suitable for use, the single chip microcomputer can only be replaced, the control cost is high, and the use is inconvenient.
Disclosure of Invention
The invention provides a novel solar pumping irrigation station control system and an implementation method thereof, and aims to solve the problems of function solidification, poor flexibility and poor applicability of the conventional solar pumping irrigation station control system.
In order to solve the above problems, the invention discloses a novel solar irrigation station control system, which comprises a power generation system and an irrigation system, and further comprises: the control system is provided with a Programmable Logic Controller (PLC), and the control system controls the power generation system and the irrigation system through the PLC; the PLC comprises an input interface, a judgment module and an output interface; the input interface of the PLC is used for receiving a first environment parameter signal of an external environment and a second environment parameter signal sent by a photovoltaic inverter in the power generation system; the judging module of the PLC is used for judging whether the first environmental parameter signal and the second environmental parameter signal meet the set starting or stopping conditions of the power generation system and/or the irrigation system; and the output interface of the PLC is used for outputting a starting or stopping signal to the power generation system and/or the irrigation system according to the judgment result of the judgment module and controlling the starting and stopping of the power generation system and/or the irrigation system.
Preferably, the first environmental parameter signal comprises at least one of: temperature signal, humidity signal, liquid level signal, current signal.
Preferably, the second environment parameter signal includes an environment parameter signal obtained by performing PID operation on the received signal analog quantity and an internal set value of the photovoltaic inverter by the photovoltaic inverter; the signal analog quantity comprises a voltage signal analog quantity output by a voltage sensor in the power generation system and an illumination intensity signal analog quantity output by an illumination sensor in the power generation system.
Preferably, the control system further comprises a touch screen; the touch screen is connected with an input interface of the PLC and used for receiving and sending a control instruction input by a user to the PLC, and the control instruction is used for controlling the starting or stopping of the power generation system and/or the irrigation and drainage system; the input interface is also used for receiving the control instruction sent by the touch screen and directly sending the control instruction to the output interface; and the output interface is further used for outputting corresponding starting or stopping signals to the power generation system and/or the irrigation system according to the control instruction, and controlling starting and stopping of the power generation system and/or the irrigation system.
Preferably, the second environment parameter signal further comprises: the voltage signal output by the voltage sensor and the illumination intensity signal output by the illumination sensor; the touch screen is also connected with the output interface and is used for acquiring and displaying the first environmental parameter signal and the second environmental parameter signal from the PLC.
Preferably, the control system further comprises a mechanical control device; the mechanical control device is electrically connected with an input interface of the PLC and used for sending a control instruction to the PLC according to manual operation of a user, and the control instruction is used for controlling the starting or stopping of the power generation system and/or the irrigation and drainage system; the input interface is also used for receiving the control instruction and directly sending the control instruction to the output interface; and the output interface is further used for outputting corresponding starting or stopping signals to the power generation system and/or the irrigation system according to the control instruction, and controlling starting and stopping of the power generation system and/or the irrigation system.
Preferably, the output interface is configured to output a stop signal to the photovoltaic inverter after a preset sleep delay time when the determining module determines that the first environmental parameter signal and the second environmental parameter signal meet the set stop condition of the photovoltaic inverter, so as to control the photovoltaic inverter to sleep.
In order to solve the problems, the invention discloses a method for realizing a novel solar pumping irrigation station control system, which comprises the following steps: a control system based on a Programmable Logic Controller (PLC) in a solar pumping irrigation station control system receives a first environmental parameter signal of an external environment and a second environmental parameter signal sent by a photovoltaic inverter in a power generation system in the solar pumping irrigation station control system through the PLC; judging whether the first environmental parameter signal and the second environmental parameter signal meet the set starting or stopping conditions of the power generation system and/or the irrigation lifting and irrigating system of the solar energy irrigation lifting and irrigating station control system through the PLC; and the PLC outputs a starting or stopping signal to the power generation system and/or the irrigation system according to the judgment result to control the starting and stopping of the power generation system and/or the irrigation system.
Preferably, the step of determining, by the PLC, whether the first environmental parameter signal and the second environmental parameter signal satisfy the set start or stop condition of the pumping irrigation system of the power generation system and/or the solar pumping irrigation station control system includes: judging whether the first environmental parameter signal and the second environmental parameter signal meet set stop conditions of the photovoltaic inverter through the PLC; the step of outputting a starting or stopping signal to the power generation system and/or the irrigation system by the PLC according to the judgment result and controlling the starting and stopping of the power generation system and/or the irrigation system comprises the following steps: when the PLC judges that the first environmental parameter signal and the second environmental parameter signal meet the set stop condition of the photovoltaic inverter, after a preset sleep delay time, a stop signal is output to the photovoltaic inverter in the power generation system to control the photovoltaic inverter to sleep.
Preferably, the implementation method of the solar irrigation station control system further includes the steps of: the PLC receives a control instruction sent by a user through a touch screen, and the control instruction is used for controlling the starting or stopping of the power generation system and/or the irrigation and drainage system; and the PLC directly outputs corresponding starting or stopping signals to the power generation system and/or the irrigation system according to the control instructions to control the starting and stopping of the power generation system and/or the irrigation system.
Compared with the prior art, the invention has the following advantages:
according to the invention, a control system (PLC control system for short) with a Programmable Logic Controller (PLC) is arranged in a control system of the solar pumping irrigation station, the PLC receives a first environmental parameter signal and a second environmental parameter signal, and then judges whether the first environmental parameter signal and the second environmental parameter signal meet the set starting or stopping conditions of the power generation system and/or the pumping irrigation system, and then outputs a starting or stopping signal to the power generation system and/or the pumping irrigation system according to the judgment result, thereby realizing the control of the solar pumping irrigation station. The PLC can be flexibly programmed, special programming is not needed to be carried out on the program, different control programs can be set and programmed for different pumping stations, and the PLC can be used for various control occasions. Therefore, the PLC control system not only realizes the control of the solar pumping irrigation station, but also solves the problems of the existing solar pumping irrigation station control system such as function solidification, poor flexibility and poor applicability, and achieves the effect of improving the flexibility and applicability of the solar pumping irrigation station control system.
Drawings
Fig. 1 is a block diagram of a control system of a novel solar pumping irrigation station according to a first embodiment of the invention;
FIG. 2 is a block diagram of a power generation system in a control system of a novel solar irrigation station according to an embodiment of the invention;
fig. 3 is a block diagram of a PLC control system in the novel solar irrigation station control system according to an embodiment of the invention;
FIG. 4 is a block diagram of a pumping irrigation system in the control system of the solar pumping irrigation station according to the first embodiment of the invention;
FIG. 5 is a system diagram of a control system of a novel solar irrigation station according to a second embodiment of the invention;
FIG. 6 is a PLC wiring diagram of a PLC control system of the novel solar irrigation station control system according to a third embodiment of the invention;
FIG. 7 is a system main wiring diagram of a novel solar energy pumping and irrigating station control system according to a third embodiment of the present invention;
fig. 8 is a flowchart illustrating steps of a method for implementing the solar irrigation station control system according to a fourth embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
Referring to fig. 1, a block diagram of a novel solar irrigation station control system according to an embodiment of the present application is shown.
The novel solar energy pumping irrigation station control system of this embodiment includes: a power generation system 102, a recharge and recharge system 106, and a control system 104 having a programmable logic controller, PLC, referred to simply as PLC control system 104.
The power generation system 102 includes, but is not limited to: voltage sensor 1022, light level sensor 1024, and photovoltaic inverter 1026, as shown in fig. 2. The PLC control system 104 includes a PLC1042, which preferably may also include but is not limited to: a touch screen 1044 and/or mechanical controls 1046, as shown in fig. 3. Wherein, PLC1042 includes: an input interface 10422, a determination module 10424, and an output port 10426. The irrigation system 106 includes a pump assembly 1062, as shown in FIG. 4. The input interface 10422 of the PLC is configured to receive a first environmental parameter signal of an external environment and a second environmental parameter signal sent by a photovoltaic inverter 1026 in the power generation system 102; the judgment module 10424 of the PLC is configured to judge whether the first environmental parameter signal and the second environmental parameter signal meet a set start or stop condition of the power generation system 102 and/or the irrigation and extraction system 106; the output interface of the PLC10426 is configured to output a start or stop signal to the power generation system 102 and/or the irrigation system 106 according to the determination result of the determination module 10424, and control start and stop of the power generation system 102 and/or the irrigation system 106.
Through this embodiment, set up PLC control system in solar energy pumping irrigation station control system, receive first environmental parameter signal and second environmental parameter signal by PLC, and then judge whether first environmental parameter signal and second environmental parameter signal satisfy the start-up or stop condition of power generation system and/or pumping irrigation system of setting, then export start-up or stop signal to power generation system and/or pumping irrigation system according to the judged result to the realization is to solar energy pumping irrigation station's control. The PLC can be flexibly programmed, special programming is not needed to be carried out on the program, different control programs can be set and programmed for different pumping stations, and the PLC can be used for various control occasions. Therefore, the PLC control system not only realizes the control of the solar pumping irrigation station, but also solves the problems of the existing solar pumping irrigation station control system such as function solidification, poor flexibility and poor applicability, and achieves the effect of improving the flexibility and applicability of the solar pumping irrigation station control system.
Based on the structure of the solar pumping irrigation station control system, the scheme can be further optimized as follows:
preferably, the first environmental parameter signal comprises at least one of: temperature signal, humidity signal, liquid level signal, current signal. The temperature sensor, the humidity sensor, the liquid level sensor and the current sensor respectively convert the obtained environmental parameters of the solar irrigation station control system, such as temperature, humidity, liquid level, current and the like, into corresponding electric signals, and the electric signals are input into the PLC control system 104 through the PLC input interface 10422.
Preferably, the second environment parameter signal includes an environment parameter signal obtained by PID operation of the received signal analog quantity by the photovoltaic inverter 1026 and an internal set value of the photovoltaic inverter 1026; the signal analog quantity includes a voltage signal analog quantity output by a voltage sensor 1022 in the power generation system 102 and an illumination intensity signal analog quantity output by an illumination sensor 1024 in the power generation system 102. The internal setting value of the photovoltaic inverter 1026 can be set by those skilled in the art as appropriate according to the actual situation, and the present invention is not limited thereto. PID is English abbreviation of three words of proportion, integral and differential, PID operation is commonly used in system control, and control quantity is calculated by utilizing proportion, integral and differential to control the system. The signal analog quantity comprises a voltage signal analog quantity which is output by the voltage sensor 1022 after receiving an input power supply and is switched into operation, and an illumination intensity signal analog quantity which is output by the illumination sensor 1024 and is 4-20 mA and is obtained by collecting a solar illumination intensity signal. The second environmental parameter signal is used as the feedback quantity of the photovoltaic inverter 1026, and is compared and operated by PID with the internal given value thereof, so that the output frequency value of the photovoltaic inverter 1026 is changed, the rotating speed and the flow of the water pump unit 1062 are adjusted, and the goal of continuously adjusting the water yield according to the sunlight intensity is achieved by combining the sleep frequency value, the awakening deviation value and the like of the photovoltaic inverter 1026.
Preferably, the PLC control system 104 further includes a touch screen 1044; the touch screen 1044 is connected to the input interface 10422 of the PLC and is configured to receive and send a control instruction input by a user to the PLC1042, where the control instruction is used to control the start or stop of the power generation system 102 and/or the irrigation and drainage system 106; the input interface 10422 of the PLC is further configured to receive the control instruction sent by the touch screen 1044, and directly send the control instruction to the output interface 10426 of the PLC; the output interface 10426 is further configured to output a corresponding start or stop signal to the power generation system 102 and/or the irrigation system 106 according to the control instruction, so as to control start and stop of the power generation system 102 and/or the irrigation system 106.
Preferably, the second environment parameter signal further comprises: a voltage signal output by the voltage sensor 1022 and an illumination intensity signal output by the illumination sensor 1024.
Preferably, the touch screen 1042 is further connected to the output interface 10426 for acquiring and displaying the first environment parameter signal and the second environment parameter signal from the PLC 1042.
Preferably, the PLC control system 104 further includes a mechanical control device 1046; the mechanical control device 1046 is electrically connected to the input interface 10422 of the PLC, and is configured to send a control command to the PLC1042 according to a manual operation of a user, where the control command is used to control the start or stop of the power generation system 102 and/or the irrigation and irrigation system 106; the input interface 10422 is further configured to receive a control instruction, and directly send the control instruction to the output interface 10426; the output interface 10426 is further configured to output a corresponding start or stop signal to the power generation system 102 and/or the irrigation system 106 according to the control instruction, so as to control start and stop of the power generation system 102 and/or the irrigation system 106. Through the mechanical control device, the starting or stopping of the power generation system and/or the pumping irrigation system can be manually controlled, and the problem that the solar pumping irrigation station control system cannot normally operate due to the fault of the solar pumping irrigation station control system caused by the automatic starting and stopping of the PLC is solved.
Preferably, the output interface 10426 is configured to output a stop signal to the photovoltaic inverter 1026 after a preset sleep delay time elapses when the determining module 10424 determines that the first environmental parameter signal and the second environmental parameter signal meet the set stop condition of the photovoltaic inverter 1026, so as to control the photovoltaic inverter 1026 to sleep. By setting the sleep delay in the PLC system, the inverter is subjected to sleep control after the PLC determines that the photovoltaic inverter meets the stop condition and the delay is a certain time, so that the system problem caused by the stop of the photovoltaic inverter due to the change of instant environmental parameters is avoided.
It should be noted that the above-described preferred embodiments may alternatively be performed or may be performed partially or entirely.
By the scheme, the problems of function solidification, poor flexibility and poor applicability of the conventional solar irrigation station control system are solved, and a more flexible and more-selective solar irrigation station control scheme is provided; and moreover, related parameters can be displayed through the touch screen, and the monitoring and the checking of related operation and maintenance personnel of the solar pumping irrigation station are facilitated.
Example two
Referring to fig. 5, a system schematic diagram of a novel solar energy irrigation station control system according to the second embodiment of the present application is shown.
The solar panel 202 converts the collected solar energy into direct current (DC 500-600V) which is used as an input power supply for the photovoltaic inverter 208 special for solar pumping irrigation, the voltage sensor 216 and the DC-DC conversion power supply (DC 24V) 206.
The photovoltaic inverter 208 special for solar irrigation converts direct current (DC 500-600V) into alternating current of AC380V, and provides power for the water pump unit 212.
The voltage sensor 216 receives an input power supply (DC 500-600V) and then operates to output an analog quantity signal of 4-20 mA, the illuminance sensor 214 collects a sunlight intensity signal and outputs an analog quantity signal of 4-20 mA, the voltage sensor 216 and the illuminance sensor 214 are respectively connected with different analog quantity input ends of the photovoltaic inverter 208 special for solar pumping irrigation, the analog quantity signal is input to the photovoltaic inverter 208 special for solar pumping irrigation, the photovoltaic inverter 208 special for solar pumping irrigation takes the input analog quantity signal as a feedback quantity, PID comparison and operation are carried out with the internal given value of the photovoltaic inverter 208 to change the output frequency value of the photovoltaic inverter for solar energy pumping irrigation, therefore, the rotating speed and the flow of the water pump unit 212 are adjusted, and the aim of continuously adjusting the water yield according to the sunlight intensity is achieved by combining the sleep frequency value, the awakening deviation value and the like of the photovoltaic inverter special for solar irrigation.
The receivable input power range of the DC-DC conversion power supply (24V) 206 is DC 500-700V, and the DC24V direct current is output after the input power supply (DC 500-600V) is received and is used as the working power supply of the touch screen 204, the PLC210 and the light intensity sensor 214.
The PLC210 and the photovoltaic inverter special for solar irrigation carry out RS485 communication, and voltage and illuminance parameter information is read. Communication parameters such as a mode, a baud rate, verification, overtime, a completion mark, an error state, reading and writing, a Modbus address, a data pointer and the like are set by calling a communication subprogram in a PLC210 program, and the communication parameters are communicated with connected equipment such as a photovoltaic inverter 208 special for solar pumping irrigation; meanwhile, corresponding communication protocol parameters are selected from the photovoltaic inverter 208 special for solar pumping irrigation, serial communication is activated, and the station address, the communication rate, the data length, the parity check bit, the stop bit and the like are set to complete reading of the voltage and illuminance parameters.
The PLC210 receives input signals of temperature, humidity, liquid level and current, and simultaneously reads the voltage and illuminance parameters of the voltage sensor and the illuminance sensor, and compares the read voltage and illuminance parameters with the environmental parameters of normal operation set inside the PLC210, thereby realizing the control of starting/stopping the photovoltaic inverter 208 special for solar irrigation.
The touch screen 204 communicates with the PLC210 through an RS232 serial communication port, displays parameter values such as temperature, humidity, liquid level, current, voltage, and illuminance, and facilitates detection during operation. Setting a PLC210 port, a PLC210 address, a communication port, a protocol, a baud rate and the like under the PLC210 programming software environment; in a touch screen configuration software environment, HMI attributes (model, station number, port number) are set, PLC210 attributes (PLC 210 type, interface type, PLC210 preset station number, communication port (COM, baud rate, data bit, check, stop bit)) are set, and the like. The touch screen 204 can also be used for transmitting instruction information input by a user to the PLC210 through the RS232 serial communication port to manually control the starting or stopping of the photovoltaic inverter 208 dedicated to solar pumping and irrigation, and further control the starting or stopping of the water pump unit 212.
Through the embodiment, different PLC control programs can be set and compiled for different solar pumping irrigation station control systems and used in various control occasions. Therefore, the control of the solar pumping irrigation station is realized, the problems of function solidification, poor flexibility and poor applicability of the control system of the conventional solar pumping irrigation station are solved, and the effect of improving the flexibility and the applicability of the control system of the solar pumping irrigation station is achieved.
It should be noted that the above specific values such as voltage are exemplary, and it should be understood by those skilled in the art that in practical applications, other suitable values may also be applicable to the solar irrigation station control system scheme of the present embodiment.
EXAMPLE III
Referring to fig. 6 and 7, a PLC wiring diagram and a system main wiring diagram of a PLC control system of a novel solar pumping irrigation station control system according to a third embodiment of the present application are respectively shown. Hereinafter, the solar irrigation station control system of the present embodiment will be described with reference to fig. 6 and 7, and the same reference numerals are used in fig. 6 and 7 for the same parts.
In the control system of the solar irrigation station of the embodiment, the solar cell modules are selected from polycrystalline silicon (DC 30V, 230W) and total 171 solar cell modules, wherein 19 solar cell panels are connected in series to form 1 path and total 9 paths; the 1 path, the 2 path and the 3 path are connected in parallel to provide power for the 1# water pump unit; the 4 paths, the 5 paths and the 6 paths are connected in parallel to provide power for the 2# water pump unit; 7 ways, 8 ways and 9 ways are connected in parallel to provide power for the 3# water pump unit.
The PLC of this embodiment is mainly composed of U1 module, U2 module, and two ports 0 and 1. The input end I0.0 of a PLC U1 module receives input of a first transfer switch of a unit, I0.1 receives input of a second transfer switch of a unit, I0.2 receives input of a third transfer switch of a unit, I0.3 receives input of a normally open contact of a middle relay of a liquid level controller, I0.4 receives input of sleep terminal inputs R01C and R01A of a VVVF1 special for 1# solar pumping irrigation, I0.5 receives input of sleep terminal inputs R01C and R01A of a VVF2 special for 2# solar pumping irrigation, and I0.6 receives input of sleep terminal inputs R01C and R01A of a VVF3 special for 3# solar pumping irrigation.
An output end Q0.0 of the PLC U1 module is connected with an intermediate relay coil J1 of the start-stop unit I, and the start-stop unit I is started; q0.1 is connected with an intermediate relay coil J2 of the start-stop unit II, and the start-stop unit II is started; q0.2 is connected with an intermediate relay coil J3 of the start-stop unit III, and the start-stop unit III; q0.3 is connected with an intermediate relay coil J4 of the liquid level controller for water shortage protection; q0.4 is connected to an intermediate relay coil J5 of the solenoid valve as a control condition for opening and closing the return pipe. The PLC U2 module collects a temperature signal, a humidity signal, a liquid level signal and a current signal as a first environment parameter signal.
The 1-path, 2-path and 3-path solar panels are connected in parallel, and the collected solar energy is converted into direct current (DC 500-600V, P1(+) and N1 (-). P1(+) and N1(-) are correspondingly connected to power input ends P (+) and N (-) of the photovoltaic inverter VVVVF 1406 and V (+) and V (-) of the voltage sensor V1304 after passing through the air switch QF 1.
The photovoltaic inverter VVVF1306 special for solar irrigation converts direct current into alternating current of AC380V, and provides power for the No. 1 water pump unit 308.
The voltage sensor V1304 is put into operation after receiving input power, 4-20 mA analog quantity signals (Iout (I1) and GND (M1)) are output to enter analog quantity input terminals (AI 2 and GND) of the 1# solar pumping irrigation special photovoltaic inverter VVVF1306, the illuminance sensor VI304 collects solar light intensity signals, and outputs 4-20 mA analog quantity signals (I, S) which are connected with the analog quantity input terminals (AI 1 and GND) of the 1# solar pumping irrigation special photovoltaic inverter VVVF1306 to serve as feedback quantities of the solar pumping irrigation special photovoltaic inverter VVVF1306, and PID comparison and operation are carried out on internal given values of the feedback quantities; the other auxiliary power supply output end E + (L1) and GND (M1) of the voltage sensor V1304 are correspondingly connected with a 24V, GND (GND and DCOM short circuit) terminal of the photovoltaic inverter VVVF1306 special for solar irrigation; the L1 is respectively connected with a normally open contact of a Q0.0 output intermediate relay J1 of a PLC U1 module and a liquid level controller intermediate relay J4 terminal, and then respectively connected with DI1 (DI 2 is in short circuit with DI 1) and DI3 of the special solar pumping and irrigation photovoltaic inverter VVVVVF 1306, and the start/stop conditions of the special solar pumping and irrigation photovoltaic inverter VVVVF 1 are used for controlling the start/stop of the 1# water pump unit.
When the first environmental parameter signal collected by the PLC U2 module, the voltage value transmitted by the voltage sensor V1304 and the illumination value transmitted by the illumination sensor 302, namely the second environmental parameter signal, do not reach the working index set inside the PLC control system, the PLC control system delays for a period of time and then connects the VVVF1306 dormancy terminal of the special solar lift irrigation photovoltaic inverter with 19RO1C, and sleeps the special solar lift irrigation photovoltaic inverter. If the index can reach the working index set in the PLC control system within the delay time, the photovoltaic inverter VVVF1306 special for solar irrigation can continue to work.
I0.3 at the input end of the PLC U1 module is connected with a normally open contact 108 of an intermediate relay of the liquid level controller, and when the liquid level is higher than a standard value, a floating switch K is connected, so that the system is in a liquid level protection state. An intermediate relay coil J4 of the liquid level controller is disconnected, DI1, DI2 and DI3 of the solar irrigation special photovoltaic inverter VVVVF 1306 cannot be completely closed, and the solar irrigation station control system is in a liquid level protection state. And the liquid level protection is cancelled when the liquid level is reduced to a standard value.
The touch screen is connected with port 0 of PLC U1 module, shows temperature, humidity, liquid level, electric current, voltage, illuminance parameter value, the monitoring of the operation in-process of being convenient for. The touch screen can also receive an action instruction of a user, directly controls a normally open contact of the intermediate relay J1 and a terminal of the intermediate relay J4 of the liquid level controller, and controls the photovoltaic inverter special for solar irrigation to control the starting or stopping of the VVVF1306 so as to control the starting or stopping of the No. 1 water pump unit. The control principle of the No. 2 and No. 3 water pump units is the same as that of the No. 1 water pump unit.
Through this embodiment, set up PLC control system in solar energy pumping irrigation station control system, receive first environmental parameter signal and second environmental parameter signal by PLC, and then judge whether first environmental parameter signal and second environmental parameter signal satisfy the start-up or stop condition of power generation system and/or pumping irrigation system of setting, then export start-up or stop signal to power generation system and/or pumping irrigation system according to the judged result to the realization is to solar energy pumping irrigation station's control. The PLC control system can also receive action instructions of a user through a touch screen or a mechanical device to control the starting and stopping of the power generation system and/or the irrigation system. The PLC can flexibly write a control program to control the sleep delay and the internal working index. Therefore, the PLC control system not only realizes the control of the solar pumping irrigation station, but also solves the problems of the existing solar pumping irrigation station control system such as function solidification, poor flexibility and poor applicability, and achieves the effect of improving the flexibility and applicability of the solar pumping irrigation station control system.
Example four
Referring to fig. 8, a flowchart illustrating steps of a method for implementing the novel solar pumping irrigation station control system according to the fourth embodiment of the present application is shown.
The implementation method of the solar irrigation station control system comprises the following steps:
and S402, receiving a first environmental parameter signal of an external environment and a second environmental parameter signal sent by a photovoltaic inverter in a power generation system in the solar pumping irrigation station control system through a PLC (programmable logic controller) in the PLC control system in the solar pumping irrigation station control system.
Wherein the first environmental parameter signal comprises at least one of: temperature signal, humidity signal, liquid level signal, current signal. The second environmental parameter signal includes: the photovoltaic inverter carries out PID operation on the received signal analog quantity and an internal set value of the photovoltaic inverter to obtain an environmental parameter signal, a voltage signal output by the voltage sensor and an illumination intensity signal output by the illumination sensor.
And S404, judging whether the first environmental parameter signal and the second environmental parameter signal meet the set starting or stopping conditions of the pumping irrigation system of the power generation system and/or the solar pumping irrigation station control system by the PLC.
When aiming at a photovoltaic inverter in a power generation system, the method comprises the following steps: and judging whether the first environmental parameter signal and the second environmental parameter signal meet the set stop condition of the photovoltaic inverter through the PLC.
And S406, the PLC outputs a starting or stopping signal to the power generation system and/or the irrigation system according to the judgment result to control the starting and stopping of the power generation system and/or the irrigation system.
As described above, when controlling a photovoltaic inverter in a power generation system, the present step includes: and when the PLC judges that the first environmental parameter signal and the second environmental parameter signal meet the set stop condition of the photovoltaic inverter, outputting a stop signal to the photovoltaic inverter in the power generation system after the preset sleep delay time in the PLC program, and controlling the photovoltaic inverter to sleep.
In this embodiment, preferably, the PLC may further receive a control instruction sent by a user through a touch screen or a mechanical control device, where the control instruction is used to control the start or stop of the power generation system and/or the irrigation system; and the PLC directly outputs corresponding starting or stopping signals to the power generation system and/or the irrigation system according to the control instruction, and controls the starting and stopping of the power generation system and/or the irrigation system.
Through this embodiment, set up PLC control system in solar energy pumping irrigation station, receive first environmental parameter signal and second environmental parameter signal by PLC, and then judge whether first environmental parameter signal and second environmental parameter signal satisfy the start-up or stop condition of power generation system and/or pumping irrigation system of setting, then export start-up or stop signal to power generation system and/or pumping irrigation system according to the judged result to realize the control to solar energy pumping irrigation station. The PLC can be flexibly programmed, and the start and stop of the electric system and/or the irrigation system can be manually controlled through a touch screen or a mechanical device. Therefore, the PLC control system not only realizes the control of the solar pumping irrigation station, but also solves the problems of the existing solar pumping irrigation station control system such as function solidification, poor flexibility and poor applicability, and achieves the effect of improving the flexibility and applicability of the solar pumping irrigation station control system.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the method embodiment, since the method embodiment is basically similar to the novel solar pumping irrigation station control system embodiment, the description is simple, and relevant points can be referred to partial description of the method embodiment.
The above detailed description is provided for the novel solar pumping irrigation station control system and the implementation method thereof, and the specific examples are applied herein to explain the principle and the implementation manner of the present invention, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a novel solar energy pumping irrigation station control system, includes power generation system and pumping irrigation system, its characterized in that still includes: the PLC control system controls the power generation system and the irrigation and irrigation system through the PLC; the PLC comprises an input interface, a judgment module and an output interface;
wherein,
the input interface of the PLC is used for receiving a first environment parameter signal of an external environment and a second environment parameter signal sent by a photovoltaic inverter in the power generation system;
the judging module of the PLC is used for judging whether the first environmental parameter signal and the second environmental parameter signal meet the set starting or stopping conditions of the power generation system and/or the irrigation system;
and the output interface of the PLC is used for outputting a starting or stopping signal to the power generation system and/or the irrigation system according to the judgment result of the judgment module and controlling the starting and stopping of the power generation system and/or the irrigation system.
2. The solar irrigation station control system of claim 1 wherein the first environmental parameter signal comprises at least one of: temperature signal, humidity signal, liquid level signal, current signal.
3. The solar pumping irrigation station control system of claim 2, wherein the second environmental parameter signal comprises an environmental parameter signal obtained by the photovoltaic inverter through PID calculation of a received signal analog quantity and an internal set value of the photovoltaic inverter;
the signal analog quantity comprises a voltage signal analog quantity output by a voltage sensor in the power generation system and an illumination intensity signal analog quantity output by an illumination sensor in the power generation system.
4. The solar irrigation station control system as claimed in claim 3 further comprising a touch screen;
the touch screen is connected with an input interface of the PLC and used for receiving and sending a control instruction input by a user to the PLC, and the control instruction is used for controlling the starting or stopping of the power generation system and/or the irrigation and drainage system;
the input interface is also used for receiving the control instruction sent by the touch screen and directly sending the control instruction to the output interface;
and the output interface is further used for outputting corresponding starting or stopping signals to the power generation system and/or the irrigation system according to the control instruction, and controlling starting and stopping of the power generation system and/or the irrigation system.
5. The solar pumping station control system of claim 4, wherein the second environmental parameter signal further comprises: the voltage signal output by the voltage sensor and the illumination intensity signal output by the illumination sensor;
the touch screen is also connected with the output interface and is used for acquiring and displaying the first environmental parameter signal and the second environmental parameter signal from the PLC.
6. The solar irrigation station control system as claimed in claim 1 further comprising a mechanical control device;
the mechanical control device is electrically connected with an input interface of the PLC and used for sending a control instruction to the PLC according to manual operation of a user, and the control instruction is used for controlling the starting or stopping of the power generation system and/or the irrigation and drainage system;
the input interface is also used for receiving the control instruction and directly sending the control instruction to the output interface;
and the output interface is further used for outputting corresponding starting or stopping signals to the power generation system and/or the irrigation system according to the control instruction, and controlling starting and stopping of the power generation system and/or the irrigation system.
7. The solar pumping irrigation station control system of claim 1, wherein the output interface is configured to output a stop signal to the photovoltaic inverter after a preset sleep delay time when the determining module determines that the first environmental parameter signal and the second environmental parameter signal satisfy the set stop condition of the photovoltaic inverter, so as to control the photovoltaic inverter to sleep.
8. A realization method of a novel solar pumping irrigation station control system is characterized by comprising the following steps:
a control system based on a Programmable Logic Controller (PLC) in a solar pumping irrigation station control system receives a first environmental parameter signal of an external environment and a second environmental parameter signal sent by a photovoltaic inverter in a power generation system in the solar pumping irrigation station control system through the PLC;
judging whether the first environmental parameter signal and the second environmental parameter signal meet the set starting or stopping conditions of the power generation system and/or the irrigation lifting and irrigating system of the solar energy irrigation lifting and irrigating station control system through the PLC;
and the PLC outputs a starting or stopping signal to the power generation system and/or the irrigation system according to the judgment result to control the starting and stopping of the power generation system and/or the irrigation system.
9. The implementation method of claim 8,
the step of judging whether the first environmental parameter signal and the second environmental parameter signal meet the set starting or stopping conditions of the power generation system and/or the pumping irrigation system of the solar pumping irrigation station through the PLC comprises the following steps: judging whether the first environmental parameter signal and the second environmental parameter signal meet set stop conditions of the photovoltaic inverter through the PLC;
the step of outputting a starting or stopping signal to the power generation system and/or the irrigation system by the PLC according to the judgment result and controlling the starting and stopping of the power generation system and/or the irrigation system comprises the following steps: when the PLC judges that the first environmental parameter signal and the second environmental parameter signal meet the set stop condition of the photovoltaic inverter, after a preset sleep delay time, a stop signal is output to the photovoltaic inverter in the power generation system to control the photovoltaic inverter to sleep.
10. The method of claim 8, further comprising:
the PLC receives a control instruction sent by a user through a touch screen, and the control instruction is used for controlling the starting or stopping of the power generation system and/or the irrigation and drainage system;
and the PLC directly outputs corresponding starting or stopping signals to the power generation system and/or the irrigation system according to the control instructions to control the starting and stopping of the power generation system and/or the irrigation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310535639.5A CN103583319B (en) | 2013-11-01 | 2013-11-01 | Novel control system of solar pumping irrigation station and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310535639.5A CN103583319B (en) | 2013-11-01 | 2013-11-01 | Novel control system of solar pumping irrigation station and implementation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103583319A true CN103583319A (en) | 2014-02-19 |
| CN103583319B CN103583319B (en) | 2015-06-03 |
Family
ID=50073810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310535639.5A Active CN103583319B (en) | 2013-11-01 | 2013-11-01 | Novel control system of solar pumping irrigation station and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103583319B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104542198A (en) * | 2015-01-21 | 2015-04-29 | 内蒙古山路光伏应用技术研究有限公司 | Automatic control method of photovoltaic irrigation |
| CN104838986A (en) * | 2015-04-21 | 2015-08-19 | 四川省绿创现代农业开发有限公司 | Intelligent spraying irrigation system |
| CN105373064A (en) * | 2015-10-23 | 2016-03-02 | 四川省农业机械研究设计院 | High-lift photovoltaic irrigation system detecting system and method |
| CN106300072A (en) * | 2016-08-31 | 2017-01-04 | 四川蜀旺新能源股份有限公司 | A kind of easy-to-install compact photovoltaic switch board |
| CN107926636A (en) * | 2017-12-13 | 2018-04-20 | 四川省农业机械研究设计院 | A kind of mountainous region segmented agricultural irrigation equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050211793A1 (en) * | 2004-03-26 | 2005-09-29 | Clark James J | Water irrigation system and method of controlling irrigation with community irrigation instructions |
| CN102960201A (en) * | 2012-12-14 | 2013-03-13 | 江苏农林职业技术学院 | Solar power supply based movable seedling raising device and monitoring method |
| CN103238501A (en) * | 2013-05-23 | 2013-08-14 | 安徽理工大学 | Automatic watering device with quantified water volume |
| CN103348898A (en) * | 2013-07-30 | 2013-10-16 | 攀枝花市银江金勇工贸有限责任公司 | Solar pumping irrigation system |
| CN203732934U (en) * | 2013-11-01 | 2014-07-23 | 四川省农业机械研究设计院 | Solar energy irrigation station control device |
-
2013
- 2013-11-01 CN CN201310535639.5A patent/CN103583319B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050211793A1 (en) * | 2004-03-26 | 2005-09-29 | Clark James J | Water irrigation system and method of controlling irrigation with community irrigation instructions |
| CN102960201A (en) * | 2012-12-14 | 2013-03-13 | 江苏农林职业技术学院 | Solar power supply based movable seedling raising device and monitoring method |
| CN103238501A (en) * | 2013-05-23 | 2013-08-14 | 安徽理工大学 | Automatic watering device with quantified water volume |
| CN103348898A (en) * | 2013-07-30 | 2013-10-16 | 攀枝花市银江金勇工贸有限责任公司 | Solar pumping irrigation system |
| CN203732934U (en) * | 2013-11-01 | 2014-07-23 | 四川省农业机械研究设计院 | Solar energy irrigation station control device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104542198A (en) * | 2015-01-21 | 2015-04-29 | 内蒙古山路光伏应用技术研究有限公司 | Automatic control method of photovoltaic irrigation |
| CN104838986A (en) * | 2015-04-21 | 2015-08-19 | 四川省绿创现代农业开发有限公司 | Intelligent spraying irrigation system |
| CN105373064A (en) * | 2015-10-23 | 2016-03-02 | 四川省农业机械研究设计院 | High-lift photovoltaic irrigation system detecting system and method |
| CN106300072A (en) * | 2016-08-31 | 2017-01-04 | 四川蜀旺新能源股份有限公司 | A kind of easy-to-install compact photovoltaic switch board |
| CN107926636A (en) * | 2017-12-13 | 2018-04-20 | 四川省农业机械研究设计院 | A kind of mountainous region segmented agricultural irrigation equipment |
| CN107926636B (en) * | 2017-12-13 | 2020-08-11 | 四川省农业机械研究设计院 | Mountain region sectional type agricultural irrigation equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103583319B (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103583319B (en) | Novel control system of solar pumping irrigation station and implementation method thereof | |
| CN105305494A (en) | Intelligent power supply system for photovoltaic air conditioner and power supply method | |
| CN202056383U (en) | Intelligent actuator for controlling valve of alternating current machine | |
| CN203404016U (en) | Head cover drainage intelligent control system of hydropower station | |
| CN203732934U (en) | Solar energy irrigation station control device | |
| CN106939627A (en) | A kind of intelligent lift pumping station system | |
| CN204906791U (en) | Light automatic control | |
| CN201074364Y (en) | Digitalized wireless programmed water supply system | |
| CN202813573U (en) | Wall-hanging stove water heating system with automatic water replenishing function | |
| CN103197624A (en) | Central heating system controller based on digital signal processor (DSP) | |
| CN203588061U (en) | PLC-based automatic control system for waterworks | |
| CN207032376U (en) | A kind of intelligent lift pumping station system | |
| CN204677437U (en) | Based on the water ring vaccum pump energy-saving control device that PLC realizes | |
| CN203925967U (en) | A kind of two grid-connected intelligent controller of electric water pump and double pump building water supply system | |
| CN202734152U (en) | Energy-saving control device of split-type air conditioner | |
| CN202196292U (en) | Hydropower station technical water supply intelligent control system | |
| CN104678758A (en) | Redundant control system for water supply | |
| CN209728500U (en) | A kind of controller used for oil extractor | |
| CN109306951B (en) | Energy-saving device for air pump | |
| CN202711045U (en) | Digital communication card of weighing controller | |
| CN210889286U (en) | Electromechanical device for automatic drainage under coal mine | |
| CN208796116U (en) | A kind of sun light tracking controller | |
| CN202040064U (en) | Parameter detection control extension for emulsion pump station | |
| CN101392546B (en) | Frequency conversion voltage transformation water supply installation according to period of time | |
| CN201032519Y (en) | Intelligent energy-saving controller for oil pumping unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |