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

A production process and large cross-section technology, applied in the direction of insulated cables, insulated conductors, organic insulators, etc., can solve problems such as inability to meet high-power transmission, and achieve excellent tear resistance, large carrying capacity, and safe laying and use.

Pending Publication Date: 2019-11-15
FAR EAST CABLE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the power of wind turbines continues to increase, simply relying on increasing the number of wind turbines to meet the transmission capacity requirements will bring greater risks to laying and operation. The traditional low-voltage transmission system can no longer meet the requirements of high-power transmission. Large-section EPR insulation is used for wind power. DC flexible cable transmission system is introduced to high-power fan units

Method used

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

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Embodiment 1

[0035] See figure 1 , The large-section EPR insulated DC flexible cable for wind power in this embodiment includes a central core 1, a main conductor 2, a main insulating layer 3 and an outer sheath 4 from the inside to the outside.

[0036] The central core 1 includes a central insulating filling bar 1-1, a central conductor 1-2, a central wrapping tape 1-3 and a central insulating layer 1-4 from inside to outside. The center wrapping belt 1-3 adopts semi-conductive nylon belt. The central conductor 1-2 is a soft structural aluminum conductor. The covering rate of the center wrapping tape 1-3 is 40%-50%.

[0037] The main conductor 2 includes a plurality of sub-item conductors 2-1 twisted and wrapped around the center line core 1, semi-conductive strips 2-2 wrapped around the outside of the sub-item conductors 2-1, and filled in adjacent sub-item conductors 2 -1 Semi-conductive filler strips 2-3 in the external gap. Subitem conductor 2-1 is a soft structural aluminum cond...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/18H01B7/02H01B7/24H01B7/295H01B3/28
CPCH01B7/1895H01B7/1875H01B7/0208H01B7/24H01B7/295H01B3/28
Inventor 邹鹏飞陈静王亮刘学王东元杨尚荣余俊王射林
Owner FAR EAST CABLE
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