Integrated Outdoor Switchgear for Automated Microgrid Isolation
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Solution Overview
Problem
Outdoor circuit breakers face challenges in difficult manual operations and complex processes due to harsh environments, making it hard to integrate outdoor jet type fuses with isolating switch mechanisms effectively.
Innovation Solution
A smart outdoor switchgear integrating a current transformer, isolating switch mechanism, electric isolating driving mechanism, and outdoor jet type fuse, allowing for automated operations and a compact, centralized design that combines these components into a single unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual closing and opening operations on the isolating switch are performed, then the isolating switch can be operated, but the operation process becomes complex and difficult requiring special work assistance
Solution Approach 1:
The patent replaces the manual mechanical operation system with an electric isolating driving mechanism. The driving mechanism includes a motor, transmission components (gears, crankshafts, connecting rods), and control circuits that automatically actuate the isolating switch, eliminating the need for complex manual operations and special work assistance.
2Ease of manufacture
If the outdoor jet type fuse and isolating switch mechanism are designed separately, then each component can be manufactured independently, but the lead structure form prevents integral installation
Solution Approach 1:
The patent merges the outdoor jet type fuse and isolating switch mechanism into an integrated assembly. The fuse is installed directly on the isolating switch mechanism, and the electric isolating driving mechanism is mounted on the bottom of the isolating switch mechanism, creating a unified structure that combines protection and isolation functions in one compact unit.
3Ease of repair
If multiple components (circuit breaker, isolating switch, fuse) are installed separately, then each component can be maintained independently, but the overall structure becomes dispersed and installation becomes inconvenient
Solution Approach 1:
The patent combines the outdoor circuit breaker, isolating switch mechanism with electric isolating driving mechanism, and outdoor jet type fuse into a single integrated switchgear assembly. This unified structure maintains operational independence of each component while providing convenient installation and centralized maintenance through the compact integrated design.
Data Source
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AI summary
Embodiments of the disclosure provides a smart outdoor switchgear for control and protection of connection and disconnection of a medium-voltage microgrid, which includes: a current transformer, an isolating switch mechanism, an outdoor circuit breaker, an electric isolating driving mechanism and an outdoor jet type fuse. The current transformer is installed on an outlet end of the outdoor circuit breaker. The isolating switch mechanism is connected to the current transformer, and the isolating switch mechanism is connected to the outlet end of the outdoor circuit breaker through the current transformer. A top of the isolating switch mechanism on a side away from the current transformer is connected to a top of the outdoor jet type fuse, and a bottom of the isolating switch mechanism on the side away from the current transformer is connected to a bottom of the outdoor jet type fuse. The electric isolating driving mechanism is installed on the bottom of the isolating switch mechanism.