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DC bus cable for heavy-current photovoltaic power station and installation and laying method of DC bus cable

A technology for photovoltaic power plants and direct current confluence, applied to power cables with shielding layers/conductive layers, power cables, equipment for connecting/terminating cables, etc., can solve problems such as high cost of use, achieve high production efficiency, and avoid causing damage , low-cost effect

Active Publication Date: 2017-08-22
FAR EAST CABLE +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the actual engineering application is ZC-YJV22-1kV AC cable, the specification is 50mm 2 ~95mm 2 Based on the actual demand of photovoltaic power generation projects, several or dozens of ZC-YJV22-1kV AC cables are used in parallel to realize high current transmission. The use cost of such cables is relatively high, so an alternative product is urgently needed to meet the needs of photovoltaic Increasingly fierce cost competition in the power station industry

Method used

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  • DC bus cable for heavy-current photovoltaic power station and installation and laying method of DC bus cable
  • DC bus cable for heavy-current photovoltaic power station and installation and laying method of DC bus cable
  • DC bus cable for heavy-current photovoltaic power station and installation and laying method of DC bus cable

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Embodiment 1

[0042] See Figure 1 to Figure 5 , the DC bus cable for high-current photovoltaic power station in this embodiment includes a main cable 1 , a branch cable 2 , a connection box 3 , a constant force fixing bolt 4 and a connection terminal 5 .

[0043] The backbone cable 1 includes a first conductor 11 , a first insulating layer 12 , an inner liner 13 , a first steel tape armor layer 14 and a first sheath layer 15 in sequence from inside to outside. The branch cable 2 includes a second conductor 21 , a second insulation layer 22 , a second steel tape armor layer 23 and a second sheath layer 24 in sequence from inside to outside. The backbone cable 1 is provided with a plurality of connection sections exposing the first conductor 11 and the first steel tape armor layer 14 . There are multiple branch cables 2, the second conductor 21 and the second steel tape armor layer 23 are exposed at the end of the branch cable 2, and the second conductor 21 at the end of each branch cable 2...

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Abstract

The invention discloses a DC bus cable for a heavy-current photovoltaic power station and an installation and laying method of the DC bus cable. The DC bus cable comprises a trunk cable, branch cables and connection boxes; the trunk is provided with connection segments out of which a first conductor and first steel-band armor layers are exposed; a second conductor and a second steel-band armor layer are exposed out of the end portion of each branch cable, and each second conductor in the end portion of the corresponding branch cable is electrically connected with the first conductor exposed out of the connection segments; positions where the trunk cable is connected with the branch cables are arranged in inner cavities of the connection boxes respectively; and the first steel-band armor layers at the two ends of the connection segment of the trunk cable are electrically and mechanically connected with the second steel-band armor layer in the end portion of the corresponding branch cable via the connection box. According to the invention, the economic benefit is high, the cost is low, the transmission capacity is large, installation and laying are convenient, and the design requirements for the power distributed bus cable of the photovoltaic power station are met.

Description

technical field [0001] The invention relates to a DC bus cable for a large-current photovoltaic power station and an installation and laying method thereof. Background technique [0002] The solar photovoltaic power generation system is mainly composed of four parts: solar panels (components), controllers, inverters, and connecting cables. The voltage provided by a single photovoltaic cell is very small and cannot be directly used as a power source. In practical engineering applications, multiple single cells are always connected in series or in parallel as required, and packaged to form an independent battery module unit. At present, the power of a single-chip photovoltaic module is 80-160Wp (peakwatt, peak power). Multiple photovoltaic modules are connected in series or in parallel, connected to the appropriate DC, and sent to the inverter through the DC bus line (cable) for conversion into AC, and then Boost and grid connection. Photovoltaic DC bus cables are mainly us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G3/08H02G1/14H01B9/02H01B9/00H01B7/22H01B7/08
CPCH01B7/0869H01B7/22H01B9/006H01B9/028H02G1/14H02G3/08
Inventor 汪传斌朱长彪徐静陆正荣程德东吴宏宽蔡光德焦晓雷
Owner FAR EAST CABLE
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