Cable Brace Assemblies for Power Distribution Stability
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Solution Overview
Problem
In power distribution systems, the close proximity of cables leads to movement and bending under strong electromagnetic forces during short circuit events, potentially causing phase-to-phase contact and arcing, necessitating improved cable bracing solutions to maintain cable stability without occupying excessive space.
Innovation Solution
The proposed solution involves a cable assembly with spaced braces and links formed from ropes, where ropes are wrapped around cables and each other to create a rigid or semi-rigid structure that maintains cables in fixed positions, preventing movement during high current events. This assembly includes multiple braces coupled together and to support structures, with links connecting the braces to maintain their positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If cables are placed in close proximity to minimize space, then the overall space envelope of the power distribution system is reduced, but the cables become susceptible to movement and bending under electromagnetic forces during short circuit events
Solution Approach 1:
The patent introduces braces as intermediary elements between the cables and the surrounding structure. These braces act as mediators that transfer electromagnetic forces from the cables to the rigid structure, preventing direct cable-to-cable contact and movement while allowing the cables to remain in close proximity for space efficiency.
Solution Approach 2:
The patent changes the mechanical parameters of the cable assembly by introducing bracing elements that modify the stiffness and support characteristics of the cable system. The braces transform the flexible cable arrangement into a more rigid composite structure that can withstand electromagnetic forces during short circuit events.
2Stability of the object's composition
If traditional cable bracing methods are used to prevent cable movement, then cable stability is improved, but the space envelope of the power distribution system increases
Solution Approach 1:
The patent divides the bracing function into multiple discrete brace elements rather than using a single bulky support structure. Each brace is a separate component that can be independently positioned and sized, allowing for optimized space utilization while providing distributed support along the cable length.
Solution Approach 2:
The patent employs thin, flexible brace elements that wrap around or attach to the cables rather than using rigid, bulky supports. These thin-film-like braces provide necessary mechanical support while occupying minimal space, thus maintaining a compact power distribution system envelope.
3Stability of the object's composition
If braces are added to prevent cable movement during short circuit events, then cable stability is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple bracing functions into a unified brace assembly that performs both mechanical support and spatial positioning simultaneously. The braces are integrated with the cable routing structure, merging the support function with the existing system architecture rather than adding separate, independent bracing systems.
Solution Approach 2:
The patent designs the braces to serve multiple functions: providing mechanical support during normal operation, preventing cable movement during short circuit events, and maintaining proper cable spacing. This multi-functionality reduces the need for additional specialized components, thereby limiting the increase in device complexity.
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 solution effectively prevents cable movement and contact issues during high current events, minimizing space usage and preventing damage from electromagnetic forces, thus enhancing the stability and safety of power distribution systems.
Implementation Method 1
A first rope is wrapped around the first cable and the second cable. A second rope is wrapped around the first rope in a space between the first cable and the second cable.
Implementation Method 2
A second rope is wrapped around the first rope in a space between the first cable and the second cable, creating normal force to maintain structural rigidity
Data Source
AI summary
A cable assembly includes a first cable and a second cable spaced from the first cable. A first brace is coupled between the first cable and the second cable. A second brace is coupled between the first cable and the second cable, wherein the second brace is spaced from the first brace. A link is coupled between the first brace and the second brace. Other cable assemblies, brace assemblies, and methods of bracing cables are disclosed.