Valhall re-development project, power from shore

A new platform will be built adjacent to the existing Valhall facilities in the North Sea between Norway and Scotland. The new platform, as well as all the existing equipment on the Valhall field, will be supplied with electric power from shore, PFS, through a HVDC (High Voltage Direct Current) transmission using the VSC (Voltage Source Converter) technology. This is the first time HVDC is used to supply an entire offshore ac system. This paper discusses the design, installation and testing of the VSC converters. The onshore converter is starting operation as an SVC to support the network during the time when the offshore converter module is being built.