Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Aerial cable

A kind of overhead cable, aluminum stranded wire technology

Inactive Publication Date: 2011-05-18
NINGBO WANBO INNOVATIVE MATERIAL & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The harmonics in the power grid system, the harmonics generated by the power transmission and distribution system, and the harmonics generated by the electrical equipment cause the AC resistance of the cable conductor to increase, so that the allowable current of the cable decreases, and at the same time, the weak current system equipment , low-voltage switchgear, communication equipment, etc. are very harmful, and harmonics increase the copper loss of the transformer, including resistance loss, eddy current loss in the conductor, and stray loss caused by leakage flux outside the conductor. wasting the capacity of the grid

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aerial cable
  • Aerial cable
  • Aerial cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: An overhead cable, including a reinforcing core 1 and an aluminum stranded wire layer 2, the aluminum stranded wire layer 2 is divided into an outer aluminum stranded wire layer 21 and an inner aluminum stranded wire layer 22, an outer aluminum stranded wire layer 21 and an inner aluminum stranded wire layer 22 The twisted wire layer 22 is formed by twisting a plurality of aluminum wires 3 respectively, and a single aluminum wire 3 is coated with an insulating layer 4 . The insulating layer 4 is an insulating paint layer or a nylon layer. A copper layer 5 is provided between the insulating layer 4 and the aluminum wire 3 . A waterproof layer 6 is arranged outside the insulating layer 4 . The waterproof layer 6 is a fluorine-containing resin layer, and the thickness of the fluorine-containing resin layer is 0.02 mm. The inner aluminum strand layer 22 is a plurality of aluminum wires 3 that are twisted clockwise around the reinforcement core 1 (right-hande...

Embodiment 2

[0030] Embodiment 2: An overhead cable, including a reinforcing core 1 and an aluminum stranded wire layer 2, the aluminum stranded wire layer 2 is divided into an outer aluminum stranded wire layer 21 and an inner aluminum stranded wire layer 22, an outer aluminum stranded wire layer 21 and an inner aluminum stranded wire layer 22 The twisted wire layer 22 is formed by twisting a plurality of aluminum wires 3 respectively, and a single aluminum wire 3 is coated with an insulating layer 4 . The insulating layer 4 is an insulating paint layer or a nylon layer. A copper layer 5 is provided between the insulating layer 4 and the aluminum wire 3 . A waterproof layer 6 is arranged outside the insulating layer 4 . The waterproof layer 6 is a fluorine-containing organic coating layer, and the thickness of the fluorine-containing organic coating layer is 0.08mm. The inner aluminum strand layer 22 is a plurality of aluminum wires 3 that are twisted clockwise around the reinforcement ...

Embodiment 3

[0031] Embodiment 3: An overhead cable, including a reinforcing core 1 and an aluminum stranded wire layer 2, the aluminum stranded wire layer 2 is divided into an outer aluminum stranded wire layer 21 and an inner aluminum stranded wire layer 22, an outer aluminum stranded wire layer 21 and an inner aluminum stranded wire layer 22 The twisted wire layer 22 is formed by twisting a plurality of aluminum wires 3 respectively, and a single aluminum wire 3 is coated with an insulating layer 4 . The insulating layer 4 is an insulating paint layer or a nylon layer. A copper layer 5 is provided between the insulating layer 4 and the aluminum wire 3 . A waterproof layer 6 is arranged outside the insulating layer 4 . The waterproof layer 6 is a polytetrafluoroethylene layer or the first fluorine-containing plastic layer, and the thickness of the polytetrafluoroethylene layer or the first fluorine-containing plastic layer is 0.6 mm. The inner aluminum strand layer 22 is a plurality of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an aerial cable which comprises a reinforced core and an aluminum stranded wire layer, wherein, the aluminum stranded wire layer is divided into an outer aluminum stranded wire layer and an inner aluminum stranded wire layer which are respectively formed by the twisting of a plurality of aluminum wires; each single aluminum wire is coated by an insulation layer; the aerialcable has the advantages that each single aluminum wire is coated or covered by the insulation layer; therefore, currents do not influence each other due to magnetic fields produced by adjacent wiresduring the transmission process of an alternating current (adjacency effect refers to the phenomenon that wires get close to each other, and the current density in each wire is not even any more) so as to eliminate AC resistance caused by the said 'crowded current' and cause the current transmission to be distributed on each wire, thereby greatly increasing the effective area of a cable conductorand reducing the impedance of the conductor and electric power consumption.

Description

technical field [0001] The invention relates to a cable, in particular to an overhead cable. Background technique [0002] The overhead cable is used to transmit alternating current. The overhead cable includes a strengthening core and an aluminum strand layer, and the strengthening core is arranged at the center of the aluminum strand layer. Usually the aluminum stranded wire layer is divided into an outer aluminum stranded wire layer and an inner aluminum stranded wire layer. A bare aluminum wire is twisted clockwise around the reinforcing core. When the alternating current passes through the aluminum strand layer of the overhead cable, the current distribution on the cross section of the aluminum strand layer is uneven due to induction, and the closer the surface of the aluminum strand layer is, the greater the current density is. This phenomenon is called "skin effect". The skin effect increases the effective resistance of overhead cables and consumes power in transmis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/02H01B7/282H01B7/18
CPCY02A30/14
Inventor 郑凯平
Owner NINGBO WANBO INNOVATIVE MATERIAL & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com