This article designs an intelligent monitoring device for photovoltaic combiner boxes,which adopts modular design and supports multiple communication methods;Communication data can be transmitted through existing photovoltaic cables without the need for additional communication lines;Supports standard MODBUS-RTU protocol,allows for online program upgrades,and facilitates data monitoring with various monitoring backend systems;The accuracy of the test data meets the measurement standards and can achieve current measurement,analog measurement,and alarm functions.
power line carrierphotovoltaic monitoringMODBUS-RTU protocolsolar photovoltaic
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