Modelling of the Pacific Intertie 4-terminal HVDC scheme in EMTP

The authors present a complete and elaborate model for the 4-terminal HVDC transmission scheme of the Pacific Intertie in mono-pole and bi-pole configurations. All actual system main hardware components and principal control and protection functions are represented. The model is primarily used for transient simulations using the well known EMTP (electromagnetic transient program). It can, however, be used with other compatible software tools. All possible modes of operation and configurations of the HVDC scheme as well as all possible faults within and outside the HVDC Converter stations can be simulated. Numerous field tests made during the commissioning phase of the HVDC scheme have been used to verify the correctness and accuracy of the digital model