CN211741889U - Photovoltaic module monitoring system - Google Patents
Photovoltaic module monitoring system Download PDFInfo
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- CN211741889U CN211741889U CN202020782507.8U CN202020782507U CN211741889U CN 211741889 U CN211741889 U CN 211741889U CN 202020782507 U CN202020782507 U CN 202020782507U CN 211741889 U CN211741889 U CN 211741889U
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Abstract
The utility model discloses a photovoltaic module monitoring system, which comprises a monitoring system upper computer, a monitoring system lower computer and a module detection platform; the monitoring system upper computer is used for issuing commands to acquire data of the corresponding components; the monitoring system lower computer is used for receiving commands issued by the monitoring system upper computer and sending the commands to each corresponding component detection platform; the component detection platform is used for collecting data corresponding to the photovoltaic components. Through the hierarchical control thought of site control center, reduced the requirement of many control systems to host computer performance to adopt ethernet communication can realize the remote transmission of data and transmission speed is fast, and data is difficult for losing, and the staff of being convenient for can real time monitoring photovoltaic module's running state, maintains the management.
Description
Technical Field
The utility model belongs to the technical field of photovoltaic power generation, concretely relates to photovoltaic module monitored control system.
Background
Along with the explosive growth of a photovoltaic power generation system, a user also puts higher requirements on the power generation performance of a photovoltaic assembly, at present, the performance test of the photovoltaic assembly is mainly realized by simulating specific environmental parameters such as temperature, irradiance and the like in a laboratory, but the photovoltaic assembly is often exposed to sunlight, gravels and wind and rain, is far more complicated than the experimental environment, is more in remote areas, roofs and the like, and is less exposed to outdoor open areas, so that management personnel are inconvenient to observe and record relevant data, working personnel are also inconvenient to obtain the operating condition of the photovoltaic assembly in real time, and the operating maintenance is carried out in time to avoid the reduction of the power generation efficiency caused by the failure of the photovoltaic assembly and even fire disasters; at present, no more perfect monitoring system specially aiming at the photovoltaic module exists in the market like a photovoltaic array.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to provide a photovoltaic module monitored control system to solve the problem that can not carry out real time monitoring that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a photovoltaic module monitoring system comprises a monitoring system upper computer, a monitoring system lower computer and a module detection platform;
the monitoring system upper computer is used for issuing commands to acquire data of the corresponding components; the monitoring system lower computer is used for receiving commands issued by the monitoring system upper computer and sending the commands to each corresponding component detection platform; the component detection platform is used for collecting data corresponding to the photovoltaic components.
Furthermore, the upper computer of the monitoring system is in communication connection with the lower computer of the monitoring system through the Ethernet.
Furthermore, the monitoring system lower computer is connected with the component detection platform through an RS485 bus.
Further, the system also comprises a temperature sensor and an irradiator which are arranged on the photovoltaic module; and the temperature sensor, the irradiator and the component detection platform are in communication connection.
Further, the monitoring system lower computer comprises an STM32 microcontroller.
Furthermore, the STM32 microcontroller is simultaneously connected with an Ethernet module, an RS485 module, a power module, an SD card module, a buzzer, a JTAG interface and an LED display module.
Compared with the prior art, the utility model has the advantages of it is following:
compared with the prior art, the invention firstly carries out data acquisition on the component detection platform through the lower computer of the monitoring system, and then the lower computer of the monitoring system transmits the data back to the upper computer after the acquisition is finished, and the hierarchical control idea reduces the requirements of the multi-control system on the performance of the upper computer; and because the distance between the upper computer of the monitoring system and the test platform is far, data acquisition is firstly carried out on site through the lower computer of the monitoring system, and then data transmission is carried out through an Ethernet TCP/IP protocol, the transmission speed is high, the real-time performance of data transmission is ensured, and the Ethernet has far data transmission capability and a fault-tolerant mechanism, so that the data can be ensured not to be lost, and the reliability of data transmission is ensured.
Drawings
Fig. 1 is a schematic view of an overall structure of a photovoltaic module monitoring system according to an embodiment of the present invention;
fig. 2 is an overall structure schematic diagram of a lower computer (field control center) of a photovoltaic module monitoring system provided by the embodiment of the utility model.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, which is an overall structural schematic diagram of a photovoltaic module monitoring system of the present invention, the monitoring system mainly includes a monitoring system upper computer, a monitoring system lower computer and a module detection platform; the monitoring system upper computer is used for issuing commands to acquire data of the corresponding components, displaying, storing and having a historical data query function; and the monitoring system lower computer (field control center) is used for receiving the command issued by the monitoring system upper computer and sending the command to each corresponding component detection platform.
The upper computer of the monitoring system and the lower computer of the monitoring system communicate with each other through an Ethernet communication mode and a TCP/IP protocol; the monitoring system lower computer is communicated with the component detection platform through an RS485 bus and a ModuleBus protocol; the component detection platform is communicated with the photovoltaic component, the temperature sensor and the irradiator which are arranged on the photovoltaic component through an RS485 bus and a ModulBus communication protocol, and parameters such as an IV characteristic curve (current-voltage), the temperature of a backboard of the component, irradiance and the like are acquired.
As shown in fig. 2, the monitoring system lower computer mainly adopts a minimum STM32 microcontroller system as a main control unit, and its peripheral circuit is composed of an ethernet module, an RS485 module, a power supply module, an SD card module, a buzzer, a JTAG interface, an LED display module, and the like.
The power module mainly adopts a switching power supply to convert 220V alternating current into 5V direct current to be input into the lower computer, and then selects an AMS1117-3.3 forward low-voltage-drop voltage stabilizer to convert the +5V direct current into +3.3V direct current to provide a +3.3V stabilized direct current power supply for the lower computer of the monitoring system. The JTAG interface is mainly used for programming programs and online debugging programs. The SD card module is mainly used for locally storing data collected by the monitoring system from the component detection platform. The buzzer is mainly used for sending out an alarm signal when the monitoring system breaks down, and reminding field workers of maintaining the monitoring system in time. The key module is used for manually selecting and acquiring data of the appointed assembly by the lower computer through keys when the upper computer stops sending the instruction. The LED display module can display information such as the label and time of the current component under test.
The monitoring system upper computer comprises a monitoring system login interface, a monitoring system homepage, a monitoring system component parameter setting interface, a monitoring system IV curve drawing function, data export Excel, historical data query and other functions; the monitoring system homepage comprises a system parameter setting module, a component parameter setting module, a first component testing module, a second component testing module, a service connecting module, a historical data query module, a historical data analysis module and a derivation function module, wherein the modules are realized by corresponding Button controls, when a corresponding Button is clicked, the monitoring system homepage can jump to a corresponding sub-window or complete a corresponding function, and a chart of the monitoring system homepage can draw and display parameters such as an IV characteristic curve of a component, irradiance of the component, temperature and the like.
The historical data analysis module can read the historical data stored in the Excel table, the detected date, time and component name and the corresponding I-V characteristic curve current and voltage data are drawn, and the corresponding current and voltage parameters are drawn into the corresponding I-V characteristic curve to be displayed in the interface.
The component parameter setting module is mainly used for configuring the components under STC, namely irradiance G =1000
，T=25
Maximum power point power of lower assembly
Maximum power point voltage
Maximum power point current
Open circuit voltage
Short circuit current
Temperature coefficient at open circuit voltage
And the parameters are equal, five parameters of the single diode model can be obtained through the component parameters under STC, the single diode model can be used for simulating to obtain IV characteristic curves under different irradiance temperatures and comparing and analyzing with actually measured IV characteristic curves, and the method can be used for photovoltaic array state evaluation and fault diagnosis.
The system comprises a service connection module, a PC (personal computer) end (TCP server end) of an upper computer of a photovoltaic component monitoring system, and a field control center (TCP client end) of a lower computer of the photovoltaic component monitoring system, wherein the service connection module and the PC end are connected through a network cable, IP addresses of the service connection module and the TCP client end are configured under the same gateway, and have the same port number, and communication data transmission of the service connection module and the TCP client end is realized through socket programming; the historical data query function can read the historical data stored in the Excel table, display the detected date, time, component name and corresponding I-V characteristic curve current, voltage data in the DataGridView1 control, and then draw the corresponding current and voltage parameters into the corresponding I-V characteristic curve.
The utility model discloses can realize that remote control is in outdoor photovoltaic module environmental parameter and corresponding I-V characteristic curve under the different environment, carry out the analysis and in time maintain to the actual working property of subassembly through the data that acquire, save the cost of fortune dimension.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (6)
1. A photovoltaic module monitoring system is characterized by comprising a monitoring system upper computer, a monitoring system lower computer and a module detection platform;
the monitoring system upper computer is used for issuing commands to acquire data of the corresponding components; the monitoring system lower computer is used for receiving commands issued by the monitoring system upper computer and sending the commands to each corresponding component detection platform; the component detection platform is used for collecting data corresponding to the photovoltaic components.
2. The photovoltaic module monitoring system according to claim 1, wherein the monitoring system upper computer and the monitoring system lower computer are in communication connection through an ethernet.
3. The photovoltaic module monitoring system according to claim 1, wherein the monitoring system lower computer is connected with the module detection platform through an RS485 bus.
4. The photovoltaic module monitoring system of claim 1, further comprising a temperature sensor and an irradiator mounted on the photovoltaic module; and the temperature sensor, the irradiator and the component detection platform are in communication connection.
5. The photovoltaic module monitoring system according to claim 1, wherein the monitoring system slave computer comprises an STM32 microcontroller.
6. The photovoltaic module monitoring system according to claim 5, wherein the STM32 microcontroller is connected with an Ethernet module, an RS485 module, a power module, an SD card module, a buzzer, a JTAG interface and an LED display module at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020782507.8U CN211741889U (en) | 2020-05-13 | 2020-05-13 | Photovoltaic module monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020782507.8U CN211741889U (en) | 2020-05-13 | 2020-05-13 | Photovoltaic module monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN211741889U true CN211741889U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020782507.8U Active CN211741889U (en) | 2020-05-13 | 2020-05-13 | Photovoltaic module monitoring system |
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| CN (1) | CN211741889U (en) |
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2020
- 2020-05-13 CN CN202020782507.8U patent/CN211741889U/en active Active
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