Gas Insulated Substations and Lines
Project 37.108
For Gas-Insulated Substations (GIS) and Gas-Insulated Lines (GIL) users, the EPRI research focus in this project is on GIS and GIL condition monitoring. There are various existing and emerging techniques including ultra-high frequency (UHF), Acoustic Emission and SF6 gas analysis. Each have their unique merits in defect detection. To better assess each approach, EPRI has built and commissioned a full-scale GIS laboratory. The facility is allowing EPRI introduce a range of defects into GIS components and explore the performance of each approach. The effectiveness of each technology to reject external noise will also be quantified. The results will guide the industry on specification and interpretation
