Study On The Integrated Insulation-detecting Device Of Electric Equipment Based On Virtual Instrument

The safe and reliability of electric equipment, to a great degree, determines the quality of its insulation. In this thesis, characteristic parameters which can reflect insulating status for electric appliances, such as, partial discharge,dielectric loss tangent and so on, is studied theoretically. The paper makes research on each algorithms of insulation characteristic. A software measuring system for the multi-function insulation detecting device based on LabVIEW platform is developed. Then, the current sensor and the analogy signal preprocessing unit for the insulation detecting device is developed, it can realize the function of programmable amplifying, programmable filtering. Finally, a database that can save, retrieve data are designed. Through practical measurement, the design of the detecting system obtains anticipated purpose. The work performed in this thesis will be of some value in terms of theory and practice for the multi-function insulation detecting of electric equipment.