Large-section EPR insulated direct-current flexible cable for wind power and production process thereof

Abstract

The invention discloses a large-section EPR insulated direct-current flexible cable for wind power and a production process thereof. The large-section EPR insulated direct-current flexible cable for wind power sequentially comprises a central wire core, a main conductor, a main insulating layer and an outer sheath from inside to outside, wherein the central wire core sequentially comprises a central insulating filling strip, central conductors, a central wrapping tape and a central insulating layer from inside to outside; the main conductor comprises a plurality of branch conductors which arestranded and wrapped outside the central wire core, a semi-conductive belt wrapped outside the branch conductors and semi-conductive filling strips filled in external gaps of the adjacent branch conductors. According to the invention, a plurality of branch conductors are stranded and wrapped outside the central wire core, thereby not only ensuring a large sectional area of the cable, but also reducing the number of the conductors. The arrangement of the central wire core balances the electric field, so that the overall current-carrying capacity is large, and the safety is high.

Description

technical field

[0001] The invention relates to a large-section EPR insulated DC flexible cable for wind power and a production process thereof. Background technique

[0002] In recent years, major wind turbine manufacturers around the world have set their sights on the sea. Offshore wind power is an inexhaustible green and low-carbon renewable energy source. It has the advantages of good endowment, large reserves, high wind speed, stable dominant wind direction, and high wind power density. It is very suitable for Large-capacity unit operation. Moreover, offshore wind power does not occupy land, and it is close to the load center of economically developed coastal areas, with good transmission economy and high market acceptance. VESTAS, a foreign large-scale wind turbine manufacturer, entered the field of offshore wind power as early as 2000. Since the traditional 3MW model could no longer meet the development requirements of low-cost offshore wind power, VESTAS's largest u...

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