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Client
Magnox Electric
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Business need
New Grid connection to allow decommissioning of the nuclear power station to proceed.
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Why Frazer-Nash?
Frazer-Nash has considerable experience of electrical power systems in nuclear power stations and their connection to the grid, as well as the analysis and design of structures.
Problem
Prior to Dungeness A power station being taken offline at the end of 2006, the 275kV grid connections had to be modified to receive rather than supply power during the decommissioning work. We were asked to carry out a study into possible options and then to provide a concept design for the most cost effective solution.
Solution
We carried out the initial optioneering and were able to show that the use of a single 275kV circuit was appropriate for the new decommissioning arrangements, rather than a separate two-circuit 33kV connection to the grid system. Once the concept was agreed with the client, detailed layouts were produced to establish that sufficient space was available within the substation, and that cable routes were appropriate.
Structural calculations were carried out and drawings were produced as the new design required the fitting of three new 275kV bushings into the west wall of the switch house to connect to a new 275/11kV transformer, situated adjacent to the wall.
