ULTRA-SAFE AND RELIABLE M.V. G.I.S. FOR PRIMARY SUBSTATIONS

摘要

The electrical network consists of a complex system where one of the most important points is the Primary Substation (HV/MV or MV/MV). They work as essential nodes of the system to transform the voltage, distribute and ensure the continuity of service. These goals are common not only for the utilities in their distribution networks but also for those primary substations involved in distributed generation (windmill plants, hydro power plants, etc.) and for MV users such us industries (petrochemical or mining plants) or large infrastructures such us airports or railways. MV switchgears for primary substations should fulfill every electrical requirements offering at the same time the maximum safety level for operators, reliability (to ensure continuity of service) and minimum maintenance (reducing costs and avoiding power outages). It should integrate every parameter in the SCADA system to make the diagnosis of the switchgear and operate remotely if necessary. This paper describes the most advanced Medium Voltage Gas Insulated Switchgear (G.I.S.) for Primary Substations. The architecture and design consider the latest experiences o f the utilities in this field whose main goal and purpose is to have a modern and safe MV switchgear that guarantees the maximum continuity of service.