Spacer Arm Corona Shield for Hinge Discharge Reduction
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Solution Overview
Problem
Suspended electrical cables experience corona discharge at the hinge of spacers, leading to energy loss, sound emission, and potential component damage.
Innovation Solution
A spacer design with a corona shield covering the hinge and clamp segments, made of high-resistance material, to mitigate corona discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hinge is used to connect clamp segments to permit relative movement, then the ease of operation is improved, but corona discharge occurs at the hinge causing energy loss and component damage
Solution Approach 1:
A corona shield is introduced as an intermediary component between the hinge and the external environment. The shield covers the hinge area where electrical stress concentrates, preventing corona discharge while allowing the hinge to maintain its pivotal movement function for ease of operation
2Ease of operation
If a hinge is used to connect clamp segments, then the ease of operation is improved, but reliability deteriorates due to corona discharge causing potential component damage
Solution Approach 1:
The corona shield serves as a protective intermediary that isolates the hinge from electrical stress. This prevents corona discharge that would otherwise cause component damage and reduce reliability, while the hinge continues to provide ease of operation
3Loss of energy
If a corona shield is added to cover the hinge, then corona discharge is reduced, but device complexity increases
Solution Approach 1:
The corona shield is implemented as a thin, flexible cover that conforms to the hinge area. This minimizes the added complexity while effectively covering the hinge to prevent corona discharge and reduce energy loss
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
Reduces corona discharge, minimizing energy loss and component damage while maintaining effective cable gripping.
Implementation Method 1
During transmission of electrical current within a cable, a corona discharge may occur. Such corona may be an issue at the end grip portion of the spacer. In particular, such corona may be an issue at the hinge of the spacer.
Implementation Method 2
A spacer design with a corona shield covering the hinge and clamp segments, made of high-resistance material, to mitigate corona discharge.
Data Source
AI summary
A spacer to hold an electrical cable is provided. The spacer includes a first clamp segment, a second clamp segment, and a hinge connecting the first clamp segment and the second clamp segment and permitting relative movement between the first clamp segment and the second clamp segment from an open position, wherein the first clamp segment and the second clamp segment do not hold the electrical cable, to a closed position, wherein the first clamp segment and the second clamp segment hold the electrical cable. The spacer also includes a corona shield extending from the first clamp segment to the second clamp segment and covering the hinge when the first clamp segment and the second clamp segment are in the open position and when the first clamp segment and the second clamp segment are in the closed position.