Abstract
An overvoltage online monitoring and data analysis device based on optical fiber voltage sensor is designed. The device adopts BGO crystal as sensing head, optical fiber as transmission medium. Four A/D converters with sampling rate of 20 MHz are equipped in Data acquisition unit to achieve four-channel concurrent high-speed data acquisition. Virtual instrument LabVIEW is used to complete data analysis and processing. Compared with other voltage monitoring device, it has good anti-interference performance and fast transient response. Physical simulation experiments prove that the system can meet the requirements of overvoltage monitoring. Its application provides accurate data for power system fault analysis and insulation coordination design.
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