High-voltage switchgear with downward single-phase flanges
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Solution Overview
Problem
High-voltage switchgear requires significant space due to empty spaces between components, and existing designs complicate maintenance access to isolators and earth electrodes.
Innovation Solution
A three-phase encapsulated busbar housing with a busbar splitting module and an outgoing feeder splitting module, featuring single-phase and three-phase connection flanges, reduces space requirements and improves maintenance accessibility by positioning components for easier access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If single-phase encapsulated circuit breakers and busbars are arranged horizontally in separate housings, then each component has its own encapsulation housing, but the switchgear requires a relatively large amount of space with unusable empty space between components
Solution Approach 1:
The patent combines multiple single-phase busbars into a common three-phase encapsulated busbar housing, merging previously separate components into a single integrated structure. This eliminates the unusable empty space between individual busbar housings while maintaining separate encapsulation protection, directly resolving the space efficiency problem.
2Area of stationary object
If the busbar splitting module is surrounded by busbar housings and circuit breakers, then space is reduced, but mechanically movable elements requiring maintenance are difficult to access
Solution Approach 1:
The patent extracts the mechanically movable isolators and earth electrodes from the compact busbar splitting module and relocates them to the busbar housing. This extraction allows maintenance personnel to access these elements easily through the busbar housing while keeping the busbar splitting module in its space-efficient position surrounded by other components.
Data Source
AI summary
The invention relates to a metal-enclosed, gas-insulated high-voltage switchgear comprising at least one busbar and at least three phase-segregated circuit breakers (11, 12, 13) that are arranged in a horizontal direction. The at least one busbar is disposed in a three-phase enclosed busbar housing (51), while a busbar subdividing module (31, 33, 110) which is fitted with at least one three-phase connecting flange (61) and three single-phase connecting flanges (41, 42, 43) is provided for connecting the circuit breakers (11, 12, 13) to the busbar housing (51). A feeder subdividing module (32) which has at least one three-phase flange (65, 68) and three single-phase connecting flanges (44, 45, 46) is provided for connecting the circuit breakers (11, 12, 13) to a three-phase enclosed feeder housing (71). The busbar subdividing module (31, 33, 110) and the feeder subdividing module (32) are arranged such that the single-phase connecting flanges (41, 42, 43, 44, 45, 46) face downward.