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Method and device for detecting temperature of solar power generation system

A temperature detection device and power generation system technology, applied in the energy field, can solve problems such as fire, safety hazards, solar module deviation, etc., and achieve the effects of reducing the probability of fire, improving safety, and high accuracy

Inactive Publication Date: 2018-11-23
BEIJING HANERGY PV TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the heat generated by the solar power generation system during the working process may cause a fire, there is a large safety hazard. Therefore, in practical applications, it is often necessary to detect the temperature of the solar power generation system
[0003] In the existing solar power generation system, the following two methods are mainly used for temperature detection: one is to install a temperature sensor on the control end component (inverter or junction box gateway, etc.) of the solar power generation system for high temperature detection. It is impossible to detect the temperature of the solar modules in the solar power generation system, and the solar modules are often prone to high temperature, which poses a great safety hazard; the other is to install a temperature sensor on the junction box of the solar module for temperature detection. In practical applications, the junction box is located on the back plate of the solar module, and there is a large deviation between the temperature of the junction box and the actual temperature of the solar module. That is to say, it is difficult to detect the actual temperature of the solar module in this way, and there is a large security risks

Method used

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  • Method and device for detecting temperature of solar power generation system

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Embodiment 2

[0078] refer to Figure 4 , shows a flow chart of steps of another method for detecting the temperature of a solar power generation system according to the present invention, which is applied to a solar power generation system.

[0079] In the embodiment of the present invention, the schematic block diagram of the solar power generation system can be represented by Figure 5 said that in figure 2 on the basis of Figure 5 The solar power generation system shown can also include: an inverter 203, one end of the inverter 203 is provided with a first input end 2031 and a second input end 2032, and the first input end 2031 and the second input end 2032 are respectively connected to the solar module The first output end 2012 and the second output end 2013 of the inverter 201 are connected, and the other end of the inverter 203 is connected to the junction box gateway 202 .

[0080] In the embodiment of the present invention, the inverter 203 can be used to convert the DC power ...

Embodiment 3

[0100] refer to Figure 6 , shows a flow chart of steps of still another temperature detection method for a solar power generation system of the present invention, which is applied to a solar power generation system.

[0101] In the embodiment of the present invention, the schematic block diagram of the solar power generation system can be represented by Figure 7 said that in Figure 5 on the basis of Figure 7 The solar power generation system shown can also include: a first switch 204, a second switch 205 and a capacitor 206; wherein, the first switch 204 is connected between the first output terminal 2012 of the solar module 201 and the inverter 203; The switch 205 and the capacitor 206 are sequentially connected between the first input terminal 2031 and the second input terminal 2032 of the inverter 203 .

[0102] In the embodiment of the present invention, the first switch 204 is connected between the first output end 2012 of the solar component 201 and the inverter 2...

Embodiment 4

[0120] refer to Figure 8 , shows a structural block diagram of a temperature detection device for a solar power generation system of the present invention, which is applied to a solar power generation system 810 .

[0121] The solar power generation system 810 may include: a solar module 811 and a junction box gateway 812; wherein, the solar module 811 may include: at least one solar component 8111, a first output terminal 8112 and a second output terminal 8113; each solar component 8111 is connected in series The rows are connected between the first output terminal 8112 and the second output terminal 8113 , each solar component 8111 is provided with a subcomponent junction box 8114 , and each subcomponent junction box 8114 is connected to the junction box gateway 812 .

[0122]The temperature detection device 820 of the solar power generation system may include:

[0123] The open-circuit voltage obtaining module 821 is configured to obtain the open-circuit voltage of each s...

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Abstract

The embodiment of the present invention provides a method and device for detecting the temperature of a solar power generation system. The method for detecting the temperature of the solar power generation system specifically includes: obtaining, by a junction box gateway, the open-circuit voltage of each solar sub component from each sub component junction box; determining the operating temperature of each solar sub component according to the open-circuit voltage; if the operating temperature of any one of the solar sub components in a solar module is greater than a preset value, performing an alarm operation. The method and device can detect the operating temperature of the solar module in the solar power generation system in real time, and achieve high accuracy, thereby reducing a fireprobability of each solar sub component in the solar module and improving the safety of the solar power generation system.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a temperature detection method and device for a solar power generation system. Background technique [0002] Solar power generation is increasing year by year, and has become an indispensable green energy in new energy. With the development of lightweight and miniaturized solar power generation systems, the application of building solar power generation systems such as roof solar power generation systems and building wall solar power generation systems is becoming more and more extensive. Since the heat generated by the solar power generation system during the working process may cause a fire, there is a greater safety hazard. Therefore, in practical applications, it is often necessary to detect the temperature of the solar power generation system. [0003] In the existing solar power generation system, the following two methods are mainly used for temperature detection: one is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K13/00G01K7/00H02S50/10
CPCG01K7/00G01K13/00H02S50/10Y02E10/50
Inventor 杨烨姜宪明
Owner BEIJING HANERGY PV TECH CO LTD
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