Anomaly Detection Technology for Gas-Insulated Switchgear

Gas-insulated switchgear (GIS) has been in service for around 50 years, and there is a need to both streamline maintenance and strengthen resilience. Accordingly, development of conditionmonitoring technologies is advancing. As the equipment continues to operate, maintenance information has steadily accumulated. Analysis of failure data collected after commissioning has clearly indicated that condition monitoring, covering aspects such as gas leakage, operating characteristics of opening/closing mechanisms, and partial discharge (PD) detection - is effective.