Delta-Configured Transmission Line Braced Post Assembly

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Solution Overview

Problem

Conventional three-phase transmission line supports are costly, susceptible to wind and lightning, and generate high magnetic fields, posing health and safety risks and requiring a more efficient and cost-effective solution.

Innovation Solution

A delta-configured three-phase transmission line braced post assembly with a compact design, utilizing a triangular configuration of conductors supported by post and suspension insulators, reduces magnetic fields and susceptibility to wind and lightning, while allowing for live-line maintenance and reduced manufacturing and erection costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional three-phase transmission line supports are used with tall structures and long steel davit arms, then the transmission lines can be supported, but the manufacturing and erection costs increase

Engineering Contradiction:

Improvetransmission line support capabilityVSAvoidmanufacturing and erection cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent changes the structural parameters by using a braced post assembly with specific geometric configuration (triangular arrangement of conductors, braced post design) instead of conventional tall structures with long davit arms. This parameter change achieves both support capability and cost reduction through simplified construction

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs a design that uses shorter, simpler post structures with bracing elements rather than expensive long steel davit arms. The braced post assembly represents a more economical substitute that maintains functional requirements while reducing material costs and erection complexity

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If conventional three-phase transmission line supports with tall structures are used, then transmission lines can be supported, but susceptibility to wind and lightning increases

Engineering Contradiction:

Improvetransmission line support capabilityVSAvoidsusceptibility to wind and lightning

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent reduces the height parameter of the support structure by using braced posts instead of tall structures. This parameter change directly reduces the surface area exposed to wind forces and lowers the structure's exposure to lightning strikes, thereby reducing susceptibility to these harmful factors while maintaining support capability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs an asymmetric braced post configuration with triangular conductor arrangement rather than symmetric tall structures. This asymmetric design optimizes structural stability against wind loads and reduces the effective target area for lightning strikes

Inventive Principle:

Principle #4Asymmetry

3Reliability

If conventional three-phase transmission line supports are used, then transmission lines can be supported, but magnetic fields increase causing health and safety risks

Engineering Contradiction:

Improvetransmission line support capabilityVSAvoidmagnetic field strength

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the spatial configuration parameter by arranging conductors in a triangular configuration on braced posts rather than using conventional tall structures. This configuration change reduces the loop area and optimizes phase spacing, thereby reducing magnetic field strength and associated health and safety risks

Inventive Principle:

Principle #35Parameter changes

4Ease of manufacture

If compact braced post assembly is used, then manufacturing and erection costs are reduced, but structural stability may be compromised

Engineering Contradiction:

Improvemanufacturing and erection costVSAvoidstructural stability

Core Design Contradiction:

Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The patent segments the support structure into braced posts with triangular conductor arrangements rather than using monolithic tall structures. This segmentation allows for simpler, more economical construction while the triangular bracing configuration provides structural stability through geometric rigidity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces bracing elements that add dimensional stability to the compact post assembly. The triangular configuration in multiple dimensions provides structural rigidity and stability, compensating for the reduced height and simplified construction

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10476249B2Three-phase transmission line braced post assembly and circuit tower including the same

Publication Date: 2019.11.12 LINDSEY MANUFACTURING CO

AI summary

A three-phase transmission line braced post assembly and a circuit tower including the same are provided. A three-phase transmission line braced post assembly includes: a pair of first post insulators; a pair of suspension insulators; a first connector connecting one of the first post insulators to one of the first suspension insulators; a second connector connecting the other of the first post insulators to the other of the first suspension insulators; a second post insulator connected to the second connector; a second suspension insulator connected to the first connector; and a third connector connecting the second post insulator to the second suspension insulator, the first connector, the second connector, and the third connector being configured to respectively support a first conductor, a second conductor, and a third conductor to have a triangular configuration.