Detailed design of 400 kV 240MVA Mobile Substation Bay

Completed

Other Power and Storage Technologies(Electricity transmission and distribution)

Applied Research and Development

ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering)

Not Cross-cutting

Project Contact
National Grid Electricity Transmission

Network Innovation Allowance

Ofgem

01 September 2016

01 January 2017

6 months

£1,370,000

Power

London

Network Innovation Allowance

Project Contact, National Grid Electricity Transmission

The objective of this project is produce a fully workable detailed design, including functional specifications of a 400 kV mobile substation bay, including a 240MVA transformer and auxiliary supplies. The project will be deemed successful if National Grid Electricity Transmission is able to develop and procure a fully deployable mobile substation bay, at a reasonable cost, based on the detailed design produced.

National Grid currently installs sufficient transformer capacity to cater for an N-2 contingency (as detailed within the Security & Quality of Supply Standards (SQSS)), to manage supply security during a transformer fault whilst one transformer is offline for maintenance. The exposure to this risk is limited to planned transformer maintenance activity. Although we are aware that mobile substations have been deployed up to 500 kV, the concept of quickly interfacing a re-usable mobile transformer bay into an existing operational substation at 400 kV remains untried and untested. The method this project seeks to advance is the use of a fully self-contained mobile 400 kV substation bay, including a 240MVA transformer and auxiliary supplies. The project involves producing detailed designs for a 400 kV 240MVA mobile substation bay capable of being commissioned within 10 days.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above

09/08/18