A monitoring system and method for a photovoltaic power converter in an optical fiber power supply system

Abstract

The invention discloses a monitoring system and method for a photovoltaic power converter in an optical fiber power supply system, which belongs to the technical field of optical fiber power supply, and includes a control unit, a circuit parameter adjustment unit and a voltage acquisition unit; the control unit adjusts and acquires photovoltaic power through the circuit parameter adjustment unit The output current of the power converter, the output voltage of the photovoltaic power converter is obtained through the voltage acquisition unit, and then the current maximum output power of the photovoltaic power converter is obtained, and the actual input optical power of the photovoltaic power converter is converted to determine the light energy transmission chain Whether there is a fault in the road, so as to ensure the normal and stable operation of the system. The control unit judges the relationship between the rated current of the post-stage equipment and the current that the photovoltaic power converter can provide, and can predict whether the post-stage equipment will overload the photovoltaic power converter. If so, the photovoltaic power converter is not allowed to supply power to the post-stage equipment. Avoid greatly shortened service life or permanent damage of photovoltaic power converter.

Description

technical field [0001] The invention relates to the technical field of optical fiber power supply, in particular to a monitoring system and method for a photovoltaic power converter in an optical fiber power supply system. Background technique [0002] The optical fiber power supply system transmits the light energy generated by the high-power laser to the photovoltaic power converter through the optical fiber, and the photovoltaic power converter converts the light energy into electrical energy to supply power to the subsequent equipment. Since the optical fiber power supply system is often affected by the bending of the optical fiber or the good contact of the optical fiber connector, the optical power entering the photovoltaic power converter is easily insufficient, resulting in insufficient output power of the photovoltaic power converter. The device is overloaded. Secondly, optical fiber power supply systems are mostly used in high-voltage or complex and strong electro...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the optical energy transmission link between the photovoltaic power converter and the laser cannot be determined online in the prior art and provides a monitoring system and method for the photovoltaic power converter in the optical fiber power supply system. The actual input optical power of the photovoltaic power converter is obtained by online scanning and monitoring of the maximum output power of the photovoltaic power converter, and the optical power between the optical laser and the photovoltaic power converter is judged in combination with the rated output optical power of the photovoltaic power converter. Whether the transmission link is faulty, so as to protect the photovoltaic power converter

Images