Impact of Extending Operational Lifetimes of Electromechanical Relays
National Grid Electricity System Operator
National Grid TO Innovation Team
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Innovation Funding Incentive
Gas Distribution Networks
By accurately determining the length of time for which electromechanical and
solid state protection relays can reliably remain in operation on the GB
Transmission system, the financial elements linked to the various replacement
options can be deferred to a later date – allowing greater flexibility in the asset
To ascertain through detailed scientific analysis and testing, the period of time
for which certain models of electromechanical and solid state protection relays
can remain in operation on the GB Transmission System.
To determine the effects (if any) that the operational lifetime of the
electromechanical and solid state protection relays has had on the reliability and
anticipated design life of the units.