High Voltage Disconnector Horizontal Pantograph Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-voltage electrical substations above 1100 kV require disconnectors with an opening distance of 10 to 12 meters, which existing vertical displacement type disconnectors cannot achieve without risking buckling due to the large and heavy mobile elements, and solutions like mounting two disconnectors in series increase size and reduce voltage distribution performance.
Innovation Solution
A horizontal displacement type disconnector with two articulated members forming a non-flat angle in the closed position, allowing for a reduced bulk and increased stability, comprising half pantographs that pivotally mount on insulating supports, facilitating the movement of large elements and enhancing resistance to weather conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If vertical displacement type disconnectors are used for 1100 kV voltage, then the opening distance of 10 to 12 meters can be achieved, but the mobile elements would have dimensions and masses causing buckling risk
Solution Approach 1:
The patent employs a horizontal displacement mechanism where the mobile element translates horizontally rather than vertically, dynamically changing the motion direction to avoid compressive buckling while achieving the required 10-12 meter opening distance at 1100 kV voltage level
Solution Approach 2:
The invention transitions from vertical displacement (one dimension) to horizontal displacement (another dimension), using lateral movement to achieve the necessary electrode separation without subjecting the mobile element to compressive loads that cause buckling
2Stability of the object's composition
If the pantograph is stiffened to avoid buckling, then the stability improves, but the mass and size of mobile elements increase
Solution Approach 1:
By changing the motion from vertical to horizontal, the patent eliminates the need for excessive stiffening, allowing the mobile element to maintain low mass while achieving adequate stability through the nature of horizontal translation rather than vertical compression
3Length of stationary object
If two state-of-the-art vertical displacement disconnectors are mounted in series, then the opening distance of 10 to 12 meters is achieved, but the total size increases and voltage distribution performance deteriorates
Solution Approach 1:
The patent uses a single mobile element with a segmented or articulated structure that can horizontally translate the full 10-12 meter distance, avoiding the need for two separate disconnectors in series and thereby reducing overall device complexity and size
Solution Approach 2:
The single mobile element performs multiple functions: it achieves the full opening distance, maintains proper voltage distribution, and avoids the complexity of series configuration, making the disconnector more universal and efficient for 1100 kV applications
Data Source
Figure 1
Figure 2~3
Figure 4A~4F
AI summary
The disconnector has articulated moving elements (2, 4) forming semi-pantographs and symmetric with respect to vertical plane. The elements have two set of arms (14, 114, 16, 116) articulated one with respect to another. The arms (14, 114) are respectively mounted on insulating supports (8, 10) via a longitudinal end (14.1). The arms (16, 116) come in contact with one another via another longitudinal end (14.2). The arms form a non level angle of about 135 and 150 degrees between them to form bend in a closed position of the disconnector. The arms (16, 116) are aligned in horizontal position.