Optimal operation of the Western Link embedded HVDC connection

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The Western Link is a new point-to-point embedded HVDC connection due to be commissioned in Great Britain in 2018. This paper investigates the optimal loading of the Western Link with respect to the wider transmission system. The work modelled a representation of behaviour of the wholesale market and system operator actions using mathematical optimisation in the form of an economic dispatch followed by an AC optimal power flow. A range of different system cases was studied using: a representative high voltage transmission network of Great Britain; system planned outages on AC circuits in parallel with the Western Link; system contingencies; and two possible post-contingency Western Link loading rules. It was concluded from the cases studied that the optimal dispatch of power on the Western Link is an affine function of power flow in the parallel AC circuits, modulated by system planned outages and the thermal rating of the Western Link.
Original languageEnglish
Number of pages9
Publication statusPublished - 30 Aug 2018
Event20th Power Systems Computation Conference - University College Dublin, Dublin, Ireland
Duration: 11 Jun 201815 Jun 2018
Conference number: XX


Conference20th Power Systems Computation Conference
Abbreviated titlePSCC
Internet address


  • HVDC
  • OPF
  • system security and operation

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