Estimation of Outage Probability of Schemes of Switchgears for 110kV Substations

Abstract

The paper gives overview of methodology for calculations of reliability and outage probability of switchgears. The parameters of reliability for some types of 110kV substations` switchgears are calculated at the work. There are also compared switchgear schemes with different types of isolation – Air Insulated Switchgears (called AIS) and Gas Insulated Switchgears (called GIS). The calculations approved that two-busbar switchgear has higher reliability comparing to other schemes of switchgears. Calculations performed in the paper can help in making decision about usage of particular switchgear for each specific substation