Study Of On-line Monitoring System For Detecting Multipoint Earthing Fault Of Transformer Core

To meet the needs of consider monitoring of iron core, this thesis puts forward this design proposal of on-line monitoring system for detecting multipoint earthing fault of transformer core based on establishing corresponding iron core mode , and completes the whole design. This system integrates signal acquisition, communication, analysis, storage together, and is designed based on multilayer system, serial communication and database technology after making an in-depth study on the monitoring method and basic theory. The system provides real-time waveform displaying, historical data inquiry, auto/manual switching current-resistance functions and so on, and makes use of database technology to manage primary data. Its practical application plays a good role in enhancing the existing level of on-line monitoring technology.