Optimising the Operation of an Integrated DC Link within an AC System
National Grid Electricity System Operator
National Grid TO Innovation Team
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Innovation Funding Incentive
National Grid has a good history of operating the AC network and also utilising a
DC link as an interconnector. However NG has no experience in
operating an integrated HVDC link in conjunction with the AC system.
The first intra network HVDC line is planned to be operational from 2013 to
accommodate the significant increase in wind generation being installed in
Scotland. It will be the responsibility of the system operator to determine the
optimum power flow on this link by balancing the risks and flows between the
parallel AC and DC networks.
Determination of how the system should be operated with the introduction of
offshore HVDC lines to maximise the exploitation of renewable energy
resources, especially wind and the types and amounts of reserve that are likely
to be required.