Interlink Arrangement for Independent Grounding Switch Stroke
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Solution Overview
Problem
In wind power generation systems, wind turbines often fail to detect ground faults, leading to uncontrolled voltage increases due to the lack of independent stroke adjustment between circuit breakers and grounding switches, resulting in increased operational costs.
Innovation Solution
A switching device with a pole assembly featuring an interlink arrangement that allows independent stroke adjustment of a circuit breaker and a grounding switch using a drive connection rod and spacer plates or a rotatable stroke adjusting member, ensuring that the stroke of the grounding switch can be set independently without affecting the circuit breaker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single drive connection rod is used to control both circuit breaker and grounding switch, then the device complexity is reduced, but independent stroke adjustment becomes impossible
Solution Approach 1:
The drive connection rod is segmented into multiple independent adjustment mechanisms: a first stroke adjusting mechanism for the circuit breaker and a second stroke adjusting mechanism for the grounding switch. Each mechanism can independently adjust the stroke of its respective interrupter unit without affecting the other, thus maintaining simple overall structure while enabling independent adjustment capability.
Solution Approach 2:
Stroke adjusting members are introduced as intermediary elements between the drive connection rod and the interrupter units. These members include adjustable linkages,偏心 (eccentric) mechanisms, or threaded adjustment components that mediate the motion transmission, allowing independent stroke control for each interrupter unit while using a single drive connection rod.
2Adaptability or versatility
If separate drive connection rods are used for circuit breaker and grounding switch, then independent stroke adjustment is enabled, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent merges the drive control of circuit breaker and grounding switch into a single drive connection rod, reducing the number of drive components. However, it combines this unified drive with segmented stroke adjustment mechanisms that allow independent control, thus achieving independent adjustment without the complexity of completely separate drive systems.
Solution Approach 2:
The single drive connection rod is designed to serve multiple functions: controlling both the circuit breaker and grounding switch. Through the incorporation of adjustable linkages or偏心 mechanisms, this universal drive component can independently adjust the stroke of each interrupter unit, eliminating the need for separate drive rods while maintaining adjustment independence.
3Ease of operation
If stroke adjustment is made through drive connection rod, then ease of operation is improved, but adaptability for independent adjustment of both interrupters is lost
Solution Approach 1:
The stroke adjustment mechanism incorporates dynamic, adjustable elements such as threaded rods with lock nuts,偏心 eccentrics, or telescopic linkages with pins. These dynamic components allow the stroke of each interrupter unit to be adjusted independently during installation or maintenance while maintaining ease of operation through simple manual adjustment without requiring complex disassembly.
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A pole assembly (200) of a switching device (106) and a method of operating the switching device (106) are provided. The pole assembly (200) including a first interrupter unit (202) providing a path for current flow therethrough in a closed state and interrupting the current flow in an open state, a second interrupter unit (203) operably connected to the first interrupter unit (202) allowing the current flow through the first interrupter unit (202) in an open state and grounding the switching device (106) in a closed state, and an interlink arrangement (201) operably connected to a moveable member (202A) of the first interrupter unit (202) and a moveable member (203A) of the second interrupter unit (203) for setting stroke of the second interrupter unit (203) independent of the stroke of the first interrupter unit (202) .