On-line monitoring system for electrical performance of multi-channel photovoltaic module

Abstract

The invention provides an on-line monitoring system for the electrical performance of multi-channel photovoltaic modules, and the on-line monitoring system at least comprises three sub-loop systems: apower supply loop system which is provided through an internal DC wide-voltage power supply system and enables the input of a plurality of photovoltaic modules to meet the energy supply of the operation of a monitoring loop system, a monitoring loop system which at least comprises a monitoring element used for acquiring electrical data of a plurality of photovoltaic modules in real time, and an internal control system used for analyzing the acquired electrical data, and ae communication loop system which comprises a monitoring loop system internal communication loop and an external communication loop for monitoring internal and external communication of the loop system. The system monitors the voltage, the current, the power and the temperature of the photovoltaic module in real time, andprovides reliable data support for operation and maintenance of a power station; the overall power consumption is low, power generation of a photovoltaic power station is not affected, and the real-time state of the assembly is truly reflected; and long-time digital on-line monitoring is realized, effectiveness and correctness of all parameters are ensured, and detection errors are small.

Description

technical field [0001] The invention relates to a monitoring system, in particular to a digital on-line monitoring system for the electrical performance of photovoltaic components (crystalline silicon). Background technique [0002] Photovoltaic modules (commonly known as solar panels) are usually composed of solar cells or solar cells of different specifications cut by a laser machine. By absorbing sunlight, the solar radiation can be directly or indirectly converted through the photoelectric effect or photochemical effect. into electrical energy. Photovoltaic modules are widely used, and the electrical performance monitoring of photovoltaic modules has become an indispensable procedure. The existing methods for monitoring the electrical performance of the on-site photovoltaic modules in photovoltaic power plants lack efficient monitoring methods. At present, string monitoring is basically the main method. However, in the actual operation process, due to the lack of monit...

AI Technical Summary

Problems solved by technology

However, in the actual operation process, due to the lack of monitoring based on the module level, the photovoltaic power station cannot accurately locate the performance defects and system defects of the components.

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