CN204594589U - Based on photovoltaic module and the header box real-time temperature test sytem of large-sized photovoltaic generating - Google Patents

Abstract

The utility model relates to a real-time monitoring system for the temperature of a photovoltaic module and a combiner box based on large-scale photovoltaic power generation, including a PT100 platinum resistor, a photovoltaic panel, a transmitter, a 24V DC converter, a data acquisition communication module, a computer, a combiner box, and a PT100 platinum The resistor is pasted on the back of the photovoltaic panel and the inner surface of the combiner box. The temperature data of the platinum resistor is sent to the data acquisition communication module through the transmitter. The 24V DC converter supplies power to the data acquisition communication module, and the data acquisition communication module transmits the collected data to Computer, the computer displays temperature information in real time. Monitor the temperature of photovoltaic modules and combiner boxes, keep abreast of the operating temperature of photovoltaic modules and combiner boxes, and take certain cooling and other measures to ensure that the operating temperature of the system is in the best state.

Description

Photovoltaic module and combiner box temperature real-time monitoring system based on large-scale photovoltaic power generation

technical field

The utility model relates to a monitoring system, in particular to a real-time monitoring system for the temperature of photovoltaic components and combiner boxes based on large-scale photovoltaic power generation.

Background technique

The temperature collection of photovoltaic power generation system is very important for system power generation, but the current photovoltaic power generation system rarely collects the temperature of photovoltaic modules and combiner boxes. Temperature has a great impact on silicon solar cells, and the peak power of solar cells will vary with temperature. rise and fall. Photovoltaic panels are generally located on the roof, and the ambient temperature is high under direct sunlight at noon in summer, and the temperature of the components is even higher than the ambient temperature. The temperature measurement of the photovoltaic components can be used to understand the working conditions of the components in real time. If the temperature is too high, appropriate cooling measures can be taken , to reduce the surface temperature of the components, and large-scale photovoltaic power generation systems, the number of photovoltaic panels is thousands to tens of thousands, it is impossible to monitor the temperature of each group of photovoltaic panels, and select representative photovoltaic panels for monitoring. The combiner box is generally exposed outdoors, and the meteorological conditions on the outdoor roof change greatly. If the temperature is too high, it may cause the spontaneous combustion of the combiner box. It is necessary to monitor the temperature of the combiner box.

Contents of the invention

The utility model is aimed at the problem that the meteorological conditions on the outdoor roof change greatly, and the high temperature may cause the spontaneous combustion of the combiner box. Check the temperature of the box, keep abreast of the working temperature of the photovoltaic modules and the combiner box, and take certain cooling and other measures to ensure that the working temperature of the system is in the best state.

The technical solution of the utility model is: a real-time temperature monitoring system for photovoltaic modules and confluence boxes based on large-scale photovoltaic power generation, including PT100 platinum resistors, photovoltaic panels, transmitters, 24V DC converters, data acquisition communication modules, computers, confluence The PT100 platinum resistor is pasted on the back of the photovoltaic panel and the inner surface of the combiner box. The temperature data of the platinum resistor is sent to the data acquisition communication module through the transmitter, and the 24V DC converter supplies power to the data acquisition communication module. The data acquisition communication module will collect The data is transmitted to the computer, and the computer displays the temperature information in real time.

The platinum resistance is pasted on the back of the photovoltaic panel and the inner surface of the combiner box, and the surface in contact with the platinum resistance is uniformly coated with thermal silica gel, and heat-resistant insulation cotton is attached to the platinum resistance.

The transmitter is placed in a waterproof box.

The photovoltaic module and combiner box temperature real-time monitoring system based on large-scale photovoltaic power generation also includes an alarm device, the computer sets the alarm temperature, and the computer output is connected to the temperature overheating alarm device.

Multiple groups of photovoltaic panels are randomly selected, and PT100 platinum is pasted on the back. The temperature data collected by PT100 platinum is sent to the data acquisition communication module through the transmitter. The data acquisition communication module collects multiple signals in real time, and then transmits the signal to the computer through the 485 protocol.

The beneficial effects of the utility model are: the utility model is based on a large-scale photovoltaic power generation photovoltaic module and a real-time monitoring system for the temperature of the combiner box. By monitoring the temperature of the photovoltaic panel of the photovoltaic system, the working temperature of the roof photovoltaic panel can be grasped in real time, and which temperatures can be roughly understood. If there is an abnormality, the situation can be eliminated in time, eliminating the need to manually measure the temperature of the photovoltaic panel. For the case of excessive temperature, the problem can be found in time and cooling measures can be taken. Carry out remote temperature monitoring on the combiner box. In the case of extreme heat, check the temperature in time and take corresponding measures to avoid spontaneous combustion due to excessive temperature in the box.

Description of drawings

Fig. 1 is a schematic structural diagram of a real-time temperature monitoring system for photovoltaic modules and combiner boxes based on large-scale photovoltaic power generation of the present invention.

Detailed ways

As shown in Figure 1, the real-time temperature monitoring system of photovoltaic modules and combiner boxes based on large-scale photovoltaic power generation is a schematic structural diagram, including PT100 platinum resistance 1, photovoltaic panels 2, transmitters 3, 24V DC converters 4, data acquisition communication modules 5, and computers 6. Combiner box 7, PT100 platinum resistor 1 is arranged at the center of the back of the photovoltaic panel 2, and the surface in contact with the platinum resistor is evenly coated with thermal silica gel, and heat-resistant insulation cotton is attached, and the platinum resistor is attached to the inner surface of the combiner box 7. Apply hot silicone evenly, and attach heat-resistant insulation cotton to make temperature measurement more accurate. The PT100 platinum resistor 1 is connected to the transmitter 3 so that the signal can be transmitted to the data acquisition communication module 5 after being attenuated over a long distance, and the transmitter is placed in a waterproof box. The data acquisition communication module 5 can collect multiple signals in real time. The data acquisition communication module 5 has a 485 communication interface, and transmits signals to the computer 6 through the 485 protocol. The 24V DC converter supplies power to the data acquisition communication module 5 . The 6 terminals of the computer can display the temperature in real time. When the temperature is too high, it will prompt and alarm, or the computer output will be connected to the alarm device, prompting to take effective measures such as cooling in time to facilitate maintenance.

Considering the cost of large-scale photovoltaic power generation, it is impossible to monitor the temperature of each group of photovoltaic panels. Specifically, the photovoltaic panels with the highest temperature can be selected according to the construction site for monitoring, which can represent the temperature in the photovoltaic matrix area.

Photovoltaic panels and combiner boxes are generally placed on the roof, and the meteorological parameters are variable. In summer high temperature weather, the temperature of photovoltaic panels and combiner boxes is generally higher than the ambient temperature. When the temperature of photovoltaic panels or combiner boxes is higher than the normal operating temperature , the system can alarm in time and remind to take measures.

Claims (5)

1. the photovoltaic module based on large-sized photovoltaic generating and header box real-time temperature test sytem, it is characterized in that, comprise PT100 platinum resistance, photovoltaic panel, transmitter, 24V direct current converter, data acquisition communication module, computing machine, header box, PT100 platinum resistance is affixed on the back side and the header box inside surface of photovoltaic panel, the temperature data of platinum resistance sends into data acquisition communication module by transmitter, 24V direct current converter is powered to data acquisition communication module, data acquisition communication module imports the data of collection into computing machine, Real time vision temperature information.

2. according to claim 1 based on photovoltaic module and the header box real-time temperature test sytem of large-sized photovoltaic generating, it is characterized in that, described platinum resistance is affixed on the back side and the header box inside surface of photovoltaic panel, the surface that platinum resistance contacts with it is the hot silica gel of uniform application all, platinum resistance is enclosed heat insulation cotton.

3., according to claim 1 based on photovoltaic module and the header box real-time temperature test sytem of large-sized photovoltaic generating, it is characterized in that, described transmitter is put in compartment.

4., according to claim 1 based on photovoltaic module and the header box real-time temperature test sytem of large-sized photovoltaic generating, it is characterized in that, also comprise warning device, computer settings alarm temperature, computer export jointing temp temperature alarm.

5. according to claim 1 based on photovoltaic module and the header box real-time temperature test sytem of large-sized photovoltaic generating, it is characterized in that, described photovoltaic panel Stochastic choice many groups, PT100 platinum is pasted at the back side, the temperature data of PT100 platinum collection send data acquisition communication module by transmitter, data acquisition communication module real-time collecting multiple signals, then by 485 protocol transmission signals to computing machine.