Cable links designing in HVAC and HVDC submarine power grids - selected issues

摘要

Submarine (offshore) HVAC and HVDC cable power grids are becoming more and more important. The establishment of submarine transmission interconnections between various national power systems and the development of offshore wind farms are main reasons for that. This paper presents the concept of offshore cable power grids, taking into account the issues of the injection of a power generated in offshore wind farms to onshore power grids and the intersystem power exchange. Some general power system requirements with regard to the rules, determining how a submarine cable link and an onshore power grid should cooperate, have been defined. The main subject of this paper is the designing process of HVAC and HVDC submarine cable links. Detailed guidelines on how to design both kinds of submarine cable links, also taking into account some major challenges and practical obstacles have been given. Last but not least, some final conclusions have been drawn and included.