| 摘要 |
The present invention relates to a photovoltaic power generation system with a function extensible monitoring device of each photovoltaic power generation channel, comprising: a microcrack detection device (100) connected and installed in a junction box (20) side mounted in a solar cell module (10), and detecting a corresponding solar cell module including a solar cell where a microcrack occurs, through conduction of micro current; and a sub device (200) connected and installed in the junction box (20) side mounted in the solar cell module (10), comparing an output pattern represented by each solar cell module with a current value of an output line of the junction box (20) side to check a shadow, an abnormal output or a line cut state, and bypassing the solar cell module with lowered output when the output of each solar cell module is lowered. The microcrack detection device and the sub device are comprised independently or jointly. According to the present invention, since a microcrack detection function and/or a shadow monitoring function are included, a newly structured photovoltaic system to extend a function of a device to monitor each photovoltaic power generation channel is able to be constructed, and a high efficiency photovoltaic power generation capable of improving and maximizing power generation efficiency is able to be realized. |
