Distributed Module-Level Photovoltaic Solar Power Generation Monitoring and Control System using Decentralised Wireless Mesh Network

摘要

The present invention relates to a distributed module-level solar power generation monitoring and control system based on a centralized wireless mesh network, and more particularly, to a voltage and current detection unit for measuring the voltage and current generated by individual solar module panels, and An arc fault detector for detecting a DC arc fault occurring between the photovoltaic module panel itself or the photovoltaic module panel, and the voltage and current values measured by the voltage detecting section and the current detecting section are less than or exceeding a preset reference value, or the arc fault detecting section An on/off switch that opens and closes the power generation output of a corresponding individual photovoltaic module panel according to occurrence or release of an abnormal condition in which a DC arc fault is detected, and a control processing unit for controlling the on/off switch according to occurrence or release of the abnormal condition And, when the on/off switch is turned off and the power generation output of the individual solar module panel is cut off, a bypass circuit part configured as a bypass circuit to bypass the individual solar module panel, and adjacent individual solar module panels A module-level monitoring and control device comprising a wireless communication unit constituting a Bluetooth wireless mesh network to configure a short-range network or a large-scale long-distance network for relaying messages or to communicate with a gateway device is provided in each individual solar module panel to provide a central control type Based on this distributed wireless mesh network, individual photovoltaic module panels are configured to autonomously detect abnormalities, switch on/off, and bypass, so that photovoltaic power generation continues with normal efficiency and operation. It relates to a distributed module-level solar power generation monitoring and control system based on a wireless mesh network.