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Flexible pull type port shore-based variable frequency cable

A variable frequency cable and dragging technology, which is applied in the direction of insulated cables, power cables with shielding layers/conductive layers, cables, etc., can solve the problems of poor harmonic suppression effect and harmonic pollution to the power system, and reduce operating costs. Failure, satisfying the effect of towing use

Inactive Publication Date: 2014-02-19
WUXI MINGZHU CABLE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the system is powered by mobile frequency conversion, it has high requirements on the cables, which must not only have properties such as resistance to dragging and winding, but also have the function of suppressing harmonics. At present, the cables generally used in this system are mostly ordinary coils. Drum cables, although they have certain performances such as resistance to dragging and winding, they are not effective in suppressing harmonics, which makes the harmonics pollute the power system

Method used

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  • Flexible pull type port shore-based variable frequency cable

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Embodiment Construction

[0014] like figure 1 As shown, a kind of flexible trailing port-based frequency conversion cable according to the present invention includes a cable core, and the cable core is formed by twisting several power cords 1; It also serves as the center line layer 4 and the outer sheath 5, and the tension element 2 is also filled in the gap of the cable core.

[0015] The power cord 1 is braided by metal-plated or non-metal-plated copper wires as phase-separated shielding, and its braiding density is not less than 80%.

[0016] The tension element 2 is extruded galvanized steel wire rope made of semi-conductive material.

[0017] The overall shielding and neutral line 4 is bundled or braided with metal-plated or non-metal-plated copper wires, the coverage rate is not less than 80%, and contains non-metallic fiber materials.

[0018] Each unit performance of the present invention and effect are as follows:

[0019] 1. Power cord (phase-separated shielding) - power transmission, th...

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Abstract

The invention discloses a flexible pull type port shore-based variable frequency cable which comprises a cable core formed by twisting a plurality of power lines. An inner sheath, a main shielding and neutral line and an outer sheath sequentially wrap the cable core, and a gap of the cable core is further filled with a tension element. The flexible pull type port shore-based variable frequency cable not only can meet the requirement for system power transmission, but also can meet the requirement for pulling use better. In addition, due to the fact that split-phase shielding and main shielding are applied, harmonic waves can be effectively inhibited, interference to an outer line is avoided, operation faults are reduced, and the flexible pull type port shore-based variable frequency cable is applied to a port machinery power transmission and distribution system.

Description

[0001] technical field [0002] The invention relates to a power transmission and distribution system of a port machine, in particular to a flexible dragging port shore-based frequency conversion cable. Background technique [0003] With the rapid development of China's economy and the acceleration of the construction of major shipping centers in domestic ports, more and more ships are calling at the port. These arriving ships need to burn a large amount of heavy oil (or diesel) to generate electricity when they are docked at the port, and the "chimney" flows everywhere. , the contradiction between pollution and urban environmental protection has become more and more prominent. Port cities generate an average of 25% more waste gas pollution than other cities due to berthing ships for oil power generation. Therefore, the situation of energy conservation and emission reduction in international port center cities is even more severe. Shore power technology is a technology tha...

Claims

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Application Information

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IPC IPC(8): H01B9/02H01B7/22
Inventor 程斌
Owner WUXI MINGZHU CABLE