Integrated Busbar Contact Layout for Medium-Voltage Disconnectors
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Solution Overview
Problem
Current medium voltage switchgear disconnector systems require additional materials and space due to separate contacts and conducting parts, leading to higher costs and inefficiencies, particularly in configurations with overlapping busbars or additional connection bars.
Innovation Solution
The integration of a contact as a part of the busbar itself, allowing the disconnector moveable part to connect and disconnect through linear movements, eliminating the need for additional contact components and optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional conducting parts and materials are used on the busbar to connect switchgear panels, then the connection reliability is improved, but the cost and space usage increase
Solution Approach 1:
The contact is merged with the busbar into a single integrated component. The busbar now includes a contact portion that directly forms the electrical contact, eliminating the need for separate contact components. This integration maintains connection reliability while reducing device complexity and material usage.
Solution Approach 2:
The busbar is designed to serve multiple functions: it acts as both the current-carrying conductor and the electrical contact element. The contact portion of the busbar can directly connect with the disconnector moveable part, making the busbar a multi-functional component that eliminates the need for additional specialized parts.
2Adaptability or versatility
If a double level of busbar system with overlapping busbars is used, then the connection flexibility is improved, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The busbar is segmented into distinct functional portions: a current-carrying portion and a contact portion. This segmentation allows the busbar to provide connection flexibility through its contact portion while maintaining manufacturing simplicity, as each portion can be designed and manufactured independently before integration.
Solution Approach 2:
Instead of using overlapping busbars in multiple levels (vertical dimension), the invention utilizes the linear dimension of the busbar by extending it with a contact portion that protrudes or extends to reach the disconnector moveable part. This dimensional change simplifies the structure while maintaining connection flexibility.
3Adaptability or versatility
If an additional connection bar is used to connect two panels, then the connection versatility is improved, but the material usage and cost increase
Solution Approach 1:
The connection functionality is merged into the busbar itself through the contact portion. The contact portion of the busbar directly connects with the disconnector moveable part, eliminating the need for separate connection bars. This merging reduces material usage while maintaining connection versatility.
Solution Approach 2:
The busbar with its contact portion serves as both the current distribution element and the connection element. This multi-functionality eliminates the need for additional specialized connection components, reducing material usage while maintaining connection versatility across different panel configurations.
Data Source
Figure 1
Figure 2~3
Figure 4(a)~5
AI summary
The present invention relates to a medium voltage switchgear busbar disconnector system, comprising: - a busbar (1); and - a disconnector moveable part (4); wherein the busbar comprises a contact (3); wherein in a connected state the disconnector moveable part is configured to be connected to the contact; and wherein in a disconnected state the disconnector moveable part is configured to be disconnected from the contact.