RC Voltage Divider Integration in GIS Common Gas Compartment
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Solution Overview
Problem
The assembly and cost of gas insulated switchgear (GIS) with an RC voltage divider are complicated due to the need for a hermetically sealed and tested gas compartment, which requires separate housing and equipment for the RC voltage divider, increasing complexity and expense.
Innovation Solution
A method where the RC voltage divider is mounted to the GIS such that the terminal cover plate and switchgear housing form a hermetically sealed common gas compartment, eliminating the need for a resin barrier and separate SF6-filled housing, allowing for direct assembly and testing at the GIS site without standard SF6 equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hermetically sealed housing with resin barrier is used for the RC voltage divider, then the gas compartment is hermetically sealed and protected, but the device complexity and manufacturing cost increase
Solution Approach 1:
The invention extracts and eliminates the resin barrier from the RC voltage divider design. By removing this intermediate sealing component, the active part is directly exposed to the GIS gas compartment, simplifying the housing structure while maintaining hermetic sealing through the direct integration with the GIS gas-tight enclosure.
Solution Approach 2:
The invention merges the RC voltage divider housing with the GIS gas compartment housing. Instead of using a separate hermetically sealed housing for the RC voltage divider, the design integrates it directly into the GIS gas-tight enclosure, eliminating redundant sealing structures and reducing overall device complexity.
2Reliability
If a separate hermetically sealed housing is used for the RC voltage divider, then the gas compartment is protected, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The invention extracts the separate hermetically sealed housing requirement from the RC voltage divider design. By eliminating this separate housing, the assembly process is simplified to direct mounting within the GIS gas compartment, reducing manufacturing steps and costs while maintaining protection through the GIS gas-tight enclosure.
Solution Approach 2:
The GIS gas compartment housing serves multiple functions: it protects the switchgear components and simultaneously provides the hermetic sealing for the RC voltage divider. This multi-functionality eliminates the need for a separate protective housing, simplifying both manufacturing and assembly.
3Reliability
If a resin barrier is used in the RC voltage divider, then the active part is protected from gas exposure, but the overall cost and structural complexity increase
Solution Approach 1:
The invention extracts and removes the resin barrier component from the RC voltage divider design. By eliminating this intermediate protective layer, the design achieves direct exposure of the active part to the GIS gas compartment, simplifying the support insulator structure while relying on the GIS gas-tight enclosure for protection.
4Reliability
If pretested conventional gas insulated instrument transformer is delivered, then testing is completed beforehand, but separate SF6 equipment and hermetical sealing are required increasing cost
Solution Approach 1:
The invention merges the RC voltage divider into the GIS gas compartment structure, allowing pretested components to be directly integrated without requiring separate hermetical sealing housings. This integration eliminates the need for separate SF6 equipment while maintaining the benefits of pretesting.
Data Source
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AI summary
Arrangement (10), comprising a gas insulated switchgear (3) and a RC voltage divider (1), wherein the gas insulated switchgear (3) comprises a switchgear compartment (13) and a voltage divider compartment (11); and wherein the RC voltage divider (1) and the gas insulated switchgear (3) form together at least partially a hermetically sealed common gas compartment (5).