High Voltage Disconnecting Switch Control via Dynamic Speed Adjustment
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Solution Overview
Problem
High voltage switches used in transmission lines experience harmful electric arcs during disconnection, which damage the switch and connected equipment due to the difficulty in moving the switch arm at high speeds without causing damage.
Innovation Solution
A system that dynamically adjusts the speed of the connect/disconnect arm using an optical position sensor and control module to minimize arc duration, comprising actuating means, an optical position sensor, and a control module that adjusts the arm's speed based on its position to reduce arc formation and duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the switch arm is moved at very high speed to reduce arc duration, then the arc harm is reduced, but the switch arm may be damaged
Solution Approach 1:
The system dynamically adjusts the speed of the switch arm during operation. The control module varies the speed according to the real-time position of the switch arm, using optical position sensors to detect position and adjust motor speed accordingly. This allows high speed during critical arc periods while maintaining control to prevent damage
Solution Approach 2:
The system employs optical position sensors to continuously monitor the switch arm position and feeds this information back to the control module. The control module uses this feedback to adjust the motor speed in real-time, creating a closed-loop control system that optimizes speed while preventing switch arm damage
2Object-affected harmful factors
If a substantial length moving arm is used in the switch, then the switch can handle high voltage lines, but it becomes difficult to move the arm at high speed without damage
Solution Approach 1:
The system transforms the static, constant-speed operation into dynamic, variable-speed operation. The control module adjusts the motor speed based on the switch arm position, allowing the substantial length arm to move quickly when needed while being controlled to prevent damage during critical phases of operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively reduces electric arcs and harmonics, protecting the switch and connected equipment by optimizing the speed of the connect/disconnect arm during operation, allowing for retrofitted implementation in existing systems without structural changes.
Implementation Method 1
an optical position sensor for determining a position of the at least one connect/disconnect arm
Data Source
AI summary
A system for controlling a high voltage switch having at least one connect/disconnect arm, the system comprising: actuating means for displacing the at least one connect/disconnect arm; an optical position sensor for determining a position of the at least one connect/disconnect arm; and a control module operatively connected to the actuating means and adapted to dynamically adjust a speed of motion of the at least one connect/disconnect arm as a function of the position of the at least one connect/disconnect arm.