Online Over voltage Monitoring Method Based on Contactless Induction Technique

The operation experience and research shows that over voltage is the main factor which caused grid insulation damage in the power system, but also the main reference option of electrical equipment in insulation conditions selection. Research on system broadband transient current sensing technology based on advanced magnetic field sensors for non-contact measurement, research on system broadband over voltage sensing technology based on advanced optical electric field sensors for non-contact measurement, and development of new micro-sensing technology Distributed connection of non-contact sensing terminals, building a sensor network system for transparent sensing of transient information in substations, realizing passive and wireless communication design, realizing transparent sensing of incoming and outgoing transient information in the station, portable and easy to install, which is the transient information of the power grid Obtain analysis to provide solid data support, greatly improve the level of transient information monitoring in the substation, and improve the reliability of power grid operation. (paper)