No abstract

Air insulated switchgears (AIS) are particularly sensitive to environmental conditions of the substation where they are installed. In order to establish the relationship between the state of switchgears and service conditions in substations, it is important to assess the actual service conditions. The three most important parameters influencing the lifetime of switchgears are relative humidity, condensation generated by the temperature instability as well as the pollution level. The aim of this paper is to give some indication based on a return of 30 years of field in typical Utility environment, in order to assess the expected and remaining lifetime of switchgear installed in DSO's substations.

No abstract

This paper gives the results of partial discharge measurements in the context of a joint project with the Belgian DNO's. The objective of this project was to gather experience with on-line PD "monitoring" in secondary substations to evaluate its suitability (compared to on-line "spot" PD measurements) for condition assessment of the selected enclosed MV switchgear.

No abstract