Multi-Layer Anti-Theft Cable with Isolated Conductors
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Solution Overview
Problem
Energy distribution companies face significant financial losses due to unauthorized tapping of electrical power from distribution network cables, as the diverted power is not systematically billed.
Innovation Solution
The development of an anti-power theft cable with a coaxial structure comprising multiple conductor layers and insulation layers, where each conductor layer is electrically isolated from the others, preventing unauthorized access and diversion of power. The cable uses aluminum or aluminum alloy conductors for strength and reduced weight, facilitating effective overhead installation and preventing power theft by ensuring that any attempted unauthorized tapping results in a short circuit or detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional single-layer power cables are used, then installation is simple, but they are vulnerable to unauthorized tapping and power theft
Solution Approach 1:
The cable is divided into multiple concentric layers (first conductor layer, first insulation layer, second conductor layer, second insulation layer, third conductor layer, third insulation layer), each performing specific functions. This segmentation allows the cable to prevent unauthorized tapping while maintaining manageable complexity through modular design
Solution Approach 2:
The cable employs a nested concentric structure where conductor layers and insulation layers are arranged one inside another around a central core. Each layer is contained within the next outer layer, creating a compact anti-theft structure that prevents unauthorized access to conductors
2Weight of moving object
If aluminum or aluminum alloy conductors are used, then weight is reduced and strength is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies aluminum or aluminum alloy materials for conductors, changing the material parameter to reduce weight while maintaining electrical conductivity. The multi-layer insulation structure compensates for any dimensional tolerances, allowing standard manufacturing precision to achieve the required positioning accuracy
3Reliability
If multiple conductor layers with insulation are used, then power theft prevention is enhanced, but manufacturing complexity increases
Solution Approach 1:
The cable manufacturing process is segmented into discrete steps for forming each conductor layer and insulation layer sequentially. This segmentation allows standard manufacturing equipment and processes to be used for each layer, simplifying the overall manufacturing complexity despite the multi-layer structure
Solution Approach 2:
The insulation layers serve multiple functions: electrical isolation between conductor layers, mechanical support structure, and protection against unauthorized tapping. This multi-functionality reduces the need for additional components, simplifying manufacturing while enhancing power theft prevention
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The anti-power theft cable effectively prevents power diversion by ensuring that any unauthorized tapping results in a short circuit or detection, thereby reducing financial losses for energy distribution companies and simplifying manufacturing and installation processes.
Implementation Method 1
The at least two dielectric insulators are configured to electrically isolate the first arc from the second arc
Implementation Method 2
The first insulation layer contacts and circumferentially surrounds the first conductor layer
Data Source
AI summary
A cable includes a core and a plurality of layers surrounding the core. In one embodiment, at least one of the layers surrounding the core includes multiple sets of phase conductors. The respective sets of phase conductors are electrically isolated from one another. Other cables are also provided.