Switchgear retrofit for London

UK Power Networks has engaged ABB to deliver a 20+ year lifetime extension for legacy switchgear installed at London distribution substations. The retrofit programme covers class QA/QF oil-filled circuit breakers, many of which are now unsupported by their original manufacturer.
Rather than complete replacement at considerable cost and requiring long network outages, UK Power Networks has appointed ABB to project manage the installation and commissioning of an innovative retrofit solution developed by its OEM partner, P&B Switchgear.

Much of the original switchboard equipment remains in good condition and installing new state-of-the-art circuit breakers will bring the switchboards up to modern safety and reliability standards. Not only will this extend the life of the assets by 20 years or more but it will minimise outages as there is no need to disturb or replace cabling. Plus, the retrofit solution will remain within the footprint of the original installation.
Like the refurbishment of National Grid’s shunt reaction in Willesden, the project will help UK Power Networks meet Ofgem’s RIIO model.

The retrofit will be completed within a one-week outage