Detachable Plug Connections for Gas-Insulated Switchgear Modules
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Solution Overview
Problem
Existing gas-insulated high-voltage switchgear assemblies face challenges in achieving compactness and efficient connection of modules due to increased housing dimensions and labor-intensive assembly and disassembly processes, especially when handling high electrical powers and pressures.
Innovation Solution
The solution involves a gas-insulated high-voltage switchgear assembly with detachable plug connections and flange-like adapter sections that allow for hydraulic isolation between modules, enabling mechanical and electrical connections while maintaining compactness and facilitating easy module coupling and decoupling without gas evacuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw connections with flange pressing are used to connect GIS modules, then gas-tight sealing is achieved, but assembly and dismantling become labor-intensive
Solution Approach 1:
The connection system is divided into separate functional components: a plug connection element for electrical connection and a flange connection element for mechanical and gas-tight connection. This segmentation allows the electrical and gas-tight functions to be achieved through different mechanisms, with the plug connection enabling quick assembly/disassembly while the flange ensures gas-tight sealing when engaged
Solution Approach 2:
The plug connection element acts as an intermediary component that bridges the electrical connection needs between modules. It includes conductive elements that establish electrical contact while being integrated with the flange structure, allowing simultaneous achievement of electrical connectivity and gas-tight sealing through a coordinated two-part connection system
2Ease of operation
If dry plug contact connections are used for electrical connection between GIS modules, then assembly is simplified, but they can only be used for relatively low gas pressures
Solution Approach 1:
The invention merges the dry plug contact connection (for electrical connectivity) with the flange connection (for gas-tight sealing at high pressures) into a single integrated connection system. The plug connection element with its conductive components is combined with the flange structure, allowing the electrical connection to function reliably under high gas pressures while maintaining assembly simplicity
3Power
If increased electrical power is specified from GIS, then power transmission capability is improved, but housing diameter increases reducing compactness
Solution Approach 1:
The GIS system is segmented into modular units that can be connected in series or parallel configurations. This modular architecture allows high power transmission to be achieved by combining multiple smaller modules rather than requiring a single large housing, thereby maintaining compactness while meeting high power requirements
Solution Approach 2:
The standardized plug-and-flange connection system provides universal interfacing that enables flexible module configurations. Multiple modules can be connected to achieve required power levels through parallel or series arrangements, allowing the system to scale power capacity without increasing individual housing dimensions
Data Source
AI summary
A gas-insulated switchgear assembly having a first module and a second module, which each have a gas area, which is in the form of a pressure vessel, is filled with an insulating gas and has at least two phase conductors. The first module is connected to the second module such that the first gas area and the second gas area are hydraulically separated from one another by an insulating body, while the phase conductors in the first module are electrically connected to the phase conductors at the same electrical potential in the second module. The at least two phase conductors in the first module can be electrically connected to the at least two phase conductors at the same electrical potential in the second module, in each case via a detachable plug connection.