Abstract:

According to the features of photovoltaic power station,we design a photovoltaic array monitoring system based on wireless sensor network and multisensor data fusion in order to improve the utilization efficiency of photovoltaic power station. Sensor nodes capture the instantaneous voltage,current and temperature of each photovoltaic array. Then the system is responsible for junior fusion of those data and transmitting junior data packets to the central node through wireless sensor network based on ZigBee.The central node is in charge of senior fusion of all junior data packets and transmitting senior data packets to the server through serial port.Through the data packet residual value parsing algorithm,the server analyzes each photovoltaic array state to determine whether photovoltaic array work correctly or not,providing the useful information for managing and maintaining photovoltaic power station.

Key words: photovoltaic array;multisensor data fusion;wireless sensor networks;residual value