Kincardine – GIS Building & Balance of Plant

Kincardine – 275KV GIS Building & Balance of Plant

Kincardine substation was identified as being at risk from flooding during a number of storm events, it was proposed the sub-station to be re-built to withstand such flooding events and additionally provide protection from the saline environment. The new 275kV Kincardine GIS substation is being built adjacent to the existing 275kV AIS Kincardine substation on an area previously utilised for the 132kV substation.

This element of the project involved the construction of a new steel-framed building to house the switchgear and other equipment along with associated external works to facilitate the new Kincardine building construction.

NRS Group is also responsible for carrying out all electrical works (including main plant installation, earthing, cable installation/termination and Protection & Control including commissioning works) associated with the Balance of Plant contract to facilitate the new GIS installation works at Kincardine 275kV substation.
The existing air insulated 275kV double busbar substation with bus section will be decommissioned in a staged manner. The AIS staged decommissioning will facilitate the erection of new towers to connect the existing overhead line circuits to the new line entry gantries in the new 275kV AIS/GIS compound.
The new 275kV GIS substation will be a double busbar substation with a bus section & coupler. The GIS building will be designed and constructed to ensure the structural slab on which the key equipment will be located is above the flood level (approx. 6.2m AOD). This required an open ground floor approximately 5m above the existing substation ground level.
This solution minimises the amount of land build up and therefore the cost.

The existing Air Insulated 275kV Double Busbar Substation (AIS) with bus section will be decommissioned in a staged manner. The AIS staged decommissioning will facilitate the erection of new towers to connect the existing overhead line circuits to the new line entry gantries in the 275kV GIS compound. 275kV line-entry gantries will be installed in the compound to facilitate the connection of the OHL circuits to the GIS switchgear via gas-insulated busbar.

The new 275kV GIS building substation is be a double busbar substation with a bus section. The GIS building will be designed and constructed to ensure the structural slab on which the key equipment will be located is above the flood level (approx. 6.2m AOD) as defined in the flood study report. This will require an open ground floor approximately 3.5m high. This solution minimises the amount of land build up and therefore the cost. The 275kV switchgear will consist of 8 bays plus one unpopulated bay to allow for a future bus section breaker on the main and reserve busbars.

The second package of works we were awarded for the site included carrying out all electrical works (including main plant installation, earthing, cable installation/ termination and Protection & Control including commissioning works) to facilitate the new GIS installation works at Kincardine 275kV substation.

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