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Solar energy power generating system

A technology of power generation system and solar energy, applied in the field of solar power generation system, to achieve the effect of preventing falling and preventing wrong operation

Inactive Publication Date: 2005-12-14
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the current setting value needs to be determined according to the requirements of other loads, so it is dangerous to make arbitrarily large changes to this value, and it is also prohibited by electrical equipment standards.

Method used

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  • Solar energy power generating system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0143] As the first embodiment of the present invention, the configuration will be described Figure 15 The example of the solar power generation system shown here is grounded with the positive terminal of the solar battery pack.

[0144] Figure 15 Among them, 1501 is a solar cell group, 1502 is a series-parallel connection part, 1503 is a connection box, 1504 is a power conditioner with an insulating transformer, 1505 is a ground fault detection device, 1506 is a switchboard, 1507 is a system (power supply system), 1508 1509 is the load, 1509 is the ground wire, and 1510 is the leakage circuit breaker.

[0145] The solar battery pack of this embodiment is Figure 15The 4-parallel type shown is connected to a power conditioner 1504 having an isolation transformer, and is connected to a system (power supply system) 1507 . The constructed solar power generation system employs non-insulated solar cells as described above, and thus can be configured as an inexpensive system co...

Embodiment 2

[0186] As a second embodiment of the present invention, the configuration Figure 17 An example of a solar power generation system is shown. This embodiment 2 is an embodiment in which the ratio of the absolute value of the ground voltage of the positive terminal and the negative terminal of the solar battery group is approximately 2:1.

[0187] Figure 17 Among them, 1701 is a solar battery group, 1702 is a series-parallel connection part, 1703 is a connection box, 1704 is a power conditioner with an insulating transformer, 1705 is a ground fault detection device, 1706 is a switchboard, 1707 is a system (power supply system), 1708 is the load, 1709 is the ground wire, 1710 is the leakage circuit breaker,

[0188] In this embodiment, the solar cell group such as Figure 17 Shown in 4-parallel, connected to a system (power system) 1707 with a power conditioner 1704 having an isolation transformer. The completed solar power generation system employs non-insulated solar cells...

Embodiment 3

[0223] As a third embodiment of the present invention, the structure will be described Figure 18 An example of a solar power generation system is shown. Embodiment 3 is an embodiment in which the negative terminal of the solar cell group is grounded.

[0224] Figure 18 Among them, 1801 is a solar battery group, 1802 is a series-parallel connection part, 1803 is a connection box, 1804 is a power conditioner with an insulating transformer, 1805 is a ground fault detection device, 1086 is a switchboard, 1807 is a system (power supply system), 1808 1809 is the load, 1809 is the ground wire, and 1810 is the leakage circuit breaker.

[0225] In this embodiment, the grounding position of Embodiment 1 is taken as the negative terminal, and the rest are the same as those of Embodiment 1. Differences from Embodiment 1 will be described below.

[0226] Ground wire

[0227] Ground the copper strip between the solar cells with the stand on the negative side. This grounding is use...

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Abstract

Solar power generation system, in which the solar battery group with the electro-activated part exposed is connected to the power supply system through an insulating transformer, a leakage circuit breaker is provided between the solar battery group and the power supply, and a ground fault detection device is installed in the grounding circuit of the solar battery group . The current setting value cut off by the leakage circuit breaker is smaller than the current setting value when the ground fault detection device judges a fault, which can prevent the leakage current from causing the detection device to start repeatedly and stop the power generation system unnecessarily. By means of the above-mentioned insulating transformer, it is possible to prevent the leakage current from causing the circuit breaker to operate to interrupt the power supply to the load. This simplifies the environmental resistance and insulation covering, reducing system cost.

Description

technical field [0001] The present invention relates to a solar power system with an electro-active part. Background technique [0002] In recent years, environmental issues have been paid more and more attention around the world. Among them, the sense of crisis of global warming caused by the emission of CO2 is more profound. The demand for clean energy is more urgent. In such a background, solar cells hold great promise as clean energy due to their safety and easy handling. [0003] Solar cells have a photoelectric conversion layer that converts light into electricity inside. Typical materials include single crystal silicon semiconductors, amorphous silicon-based semiconductors, III-V compound semiconductors, II-VI compound semiconductors, and I-III- Group VI2 compound semiconductors, etc. [0004] A typical solar cell module is shown in FIGS. 6A and 6B , wherein FIG. 6A is an external view of a solar cell group 601 , and FIG. 6B is a cross-sectional view along line 6B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/04H01L31/042H01L31/048H02H3/33H02J7/35
CPCF24S25/11F24S2080/012H01L31/048H02H3/337H02J7/35Y02E10/47Y02E10/56Y10S136/291Y10S136/293Y10S323/906
Inventor 牧田英久高林明治三村敏彦松下正明向井隆昭糸山诚纪
Owner CANON KK