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Hybrid HVDC for supply of power to offshore oil platforms

Andersen, B. and Xu, L. and Cartwright, P. (2004) Hybrid HVDC for supply of power to offshore oil platforms. In: 40th Cigre Session 2004, 2004-01-01.

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A HVDC hybrid system, comprising a line commutated thyristor HVDC converter and a STATCOM, is proposed in this paper for supplying power to offshore oil platforms that do not have their own generation. The proposed system combines the robust performance, low capital cost and low power loss of a line commutated HVDC converter, with the fast dynamic performance of an equivalent VSC Transmission system. The paper describes the principles and control strategies of the proposed system. PSCAD/EMTDC simulations are presented to demonstrate the robust performance of the system using case studies of various operating conditions such as black-start, load perturbations, AC fault conditions and disturbance caused by the starting of large local induction machines.