High-Voltage Switching Arrangement with Direct Coating Insulator
Solution Overview
Problem
Existing high-voltage switching arrangements are mechanically complex, heavy, and environmentally costly due to the need for extensive insulating gas and additional housing, which complicates mechanical fastening and increases manufacturing costs.
Innovation Solution
A simplified arrangement with a single resistor stack where the housing is formed by a direct coating on the resistor stack and insulator, reducing the length of the insulator and eliminating an additional housing, allowing for reduced insulating gas usage and one-sided mechanical fastening, using silicone for the coating which is weather-proof and cost-effective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a housing is arranged between the resistor stack and the insulator with a gap filled with insulating gas, then electrical insulation is improved, but the weight, complexity, and quantity of insulating gas increase
Solution Approach 1:
The patent merges the housing function directly into the insulator by forming a coating on the insulator surface, eliminating the separate housing component and the gap between housing and insulator. This integration maintains electrical insulation while reducing structural complexity and insulating gas quantity.
Solution Approach 2:
The insulator is given multiple functions: it provides mechanical support, electrical insulation, and serves as the housing structure through its coating. This multi-functionality eliminates the need for separate housing components while maintaining all necessary functions.
2Stability of the object's composition
If the insulator is designed with large wall thickness over its entire length, then mechanical stability is improved, but the weight and cost increase
Solution Approach 1:
The patent applies different wall thicknesses to different regions of the insulator based on local mechanical requirements. The coating is applied selectively where needed for insulation and mechanical support, rather than uniformly across the entire insulator length, reducing overall weight while maintaining stability.
3Reliability
If the housing of the resistor stack is arranged at a spacing from the insulator, then electrical insulation is improved, but the quantity of insulating gas and manufacturing costs increase
Solution Approach 1:
The housing and insulator are merged into a single integrated structure where the coating on the insulator serves as the housing. This eliminates the gap between housing and insulator, significantly reducing the quantity of insulating gas required while maintaining electrical insulation through the coating material itself.
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
This configuration results in a lighter, cost-effective, and environmentally friendlier solution that maintains mechanical stability and supports high-voltage switching up to 1200 kV with reduced material usage and simplified mounting, while minimizing environmental impact.
Implementation Method 1
The housing will be or is formed by a direct coating on the resistor stack and the insulator
Implementation Method 2
A first and a second flange can be comprised by the inventive arrangement, between which the precisely one resistor stack and the switching device are arranged
Data Source
AI summary
An arrangement and a method have precisely one resistor stack for switching high voltages. The arrangement contains a switching device that has two contact devices, which are arranged in an insulator. The contact devices are separated from each other by a separation path, wherein the separation path can be bridged by a movable contact piece. One contact device is in contact with the resistor stack in a common housing. The common housing is formed by a direct coating of the resistor stack and the insulator.