Abstract

Over the last few years, many high-voltage direct-current links have been studied, commissioned, and built. Among the constraints, one of the most important is the corrosion risk for surrounding submerged/buried metallic structures. When the coastal area is rich of metallic structures, corrosion risk may be unacceptable, requiring the relocation of the electrode at a significant distance offshore. Since the seafloor at the selected location may be considerably deep, relevant issues about installation and maintenance must be addressed in the design phase. A modular electrode design, able to cope efficiently with all such requirements and minimizing the overall cost has been developed.

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