Partial discharge diagnostics for mixed-technology switchgear (MTS) in outdoor substations

摘要

It has been more than 10 years since the first use of mixedtechnology switchgear (MTS) in HV substations. Mixed-technology switchgear (also known as hybrid switchgear) is now used worldwide and offers another substation technology option alongside gas-insulated switchgear (GIS) and air-insulated switchgear equipment. The terms ??mixed technology?? and ??hybrid?? refer to a combination of traditional air-insulated switchgear and newer SF₆ metal-clad GIS. Mixed-technology switchgear technology provides metal-enclosed switchgear modules similar to those used in GIS substations but connected by conventional outdoor air-insulated busbars. The MTS module is a self-contained switching module suitable for use in outdoor substations and uses proven GIS components.