SP Energy Networks
SP Energy Networks Innovation
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Innovation Funding Incentive
The 'Y' type network in Cheshire requires the LV network to be manually
managed/switched during 11kV fault isolation and restoration. The LV network has
to be disconnected in order that there will be no backfeeds onto the fault while
isolationg. It is then reconnected after the 11kV restoration. Care has to be taken
so that any stage in the process does not overload the LV network This may involve
closing 11kV breakers simultaneously at each end of the fault. Lynx is an
electromechanical device that will automatically during the fault conditions.
This project will develop a system that will allow the 11kV network to be
sectionalised as on a radial system with the LV network automatically opening and
closing depending on the 11kV status thus allowing engineers to focus solely on
isolation/restoration. This in turn will improve CML performance.