Switchgear Module Asymmetric Disconnector Spatial Arrangement
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Solution Overview
Problem
Gas-insulated high-voltage switchgear systems face challenges in achieving high power density and ease of maintenance, particularly in compact urban spaces, while maintaining effective electrical shielding and supporting high voltages.
Innovation Solution
A switchgear module design with a common gas space housing three busbar conductor sections and outgoing conductor sections, where disconnect switches are arranged to increase the distance between separation points, reducing electric fields and enhancing electrical shielding, and allowing for a compact, modular, and versatile design that combines single-phase and three-phase encapsulation advantages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If three-phase encapsulated routing is used, then compactness and power density are improved, but electrical shielding between conductors deteriorates
Solution Approach 1:
The disconnection points are arranged in the spatial dimension to be located on opposite sides of the outgoing normal plane, transforming a two-dimensional planar arrangement into a three-dimensional spatial configuration. This dimensional change increases the distance between disconnection points while maintaining the compact three-phase encapsulated structure, thereby reducing electric field intensity between conductors.
2Object-affected harmful factors
If single-phase encapsulated routing is used, then electrical shielding is improved, but compactness and power density deteriorate
Solution Approach 1:
The invention merges the advantages of both single-phase and three-phase encapsulation by using a common gas space housing for three-phase conductors (combining function) while arranging disconnection points on opposite sides of the outgoing normal plane (maintaining electrical shielding). This integration achieves compact three-phase routing with improved electrical shielding.
3Device complexity
If disconnection points are placed close together, then device complexity is reduced, but electrical shielding deteriorates due to high electric fields
Solution Approach 1:
The disconnection points are asymmetrically arranged on opposite sides of the outgoing normal plane rather than being symmetrically placed close together. This asymmetric spatial distribution increases the distance between disconnection points, reducing electric field intensity while maintaining a relatively simple common gas space housing structure.
Data Source
Figure 1a
Figure 1b~2b
Figure 3a~4b
AI summary
The invention relates to a switchgear module (2) for a switchgear having a housing (1) which forms a common gas chamber for receiving an isolating gas for the switchgear module. The switchgear module (2) comprises: a collection rail conductor assembly comprising three collection rail conductor sections (110, 120, 130) housed in the common gas chamber; an outgoing conductor connection group having three outgoing conductor openings (56, 66, 76) and having three outgoing conductor sections (156, 166, 176) extending from within the housing to one of the outgoing conductor openings (56, 66, 76); and three isolating switches (151, 161, 171), each of which connecting one of the collection rail conductor sections (110, 120, 130) to one of the outgoing conductor sections (156, 166, 176) via a parting point (152, 162, 172). An outgoing normal plane E4 is defined by the three outgoing conductor openings (56, 66, 76) which is parallel to the perpendicular bisectors of the outgoing conductor openings (56, 66, 76). The parting points (152, 162, 172) are spatially arranged so that at least the parting point (152, 162) of a first isolating switch (151, 161) is arranged on a first side of the outgoing normal plane E4 and the parting point (172) of a second isolating switch (171) is arranged on a second side of the outgoing normal plane E4 opposite the first side.