Insulating Tuned Mass Damper for High-Voltage Load Damping
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Solution Overview
Problem
Electrical equipment at transmission facilities experiences periodic lateral load demands from high winds and seismic activity, necessitating improved methods to manage these loads while maintaining electrical isolation.
Innovation Solution
A tuned mass damper system is employed, comprising an insulating pendulum with a tuned mass at a lower electrical potential, supported by an insulating support structure, to oscillate and dampen loads, with damping mechanisms at ground potential.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a tuned mass damper is used to reduce periodic lateral loads on electrical equipment, then the damping effectiveness is improved, but the electrical isolation requirements become more complex and costly
Solution Approach 1:
The system divides the damper into two electrically isolated segments: a primary mass connected to the electrical equipment at high potential, and a secondary mass suspended at ground potential through an insulating pendulum. This segmentation allows each segment to be electrically isolated appropriately, simplifying the overall electrical isolation requirements while maintaining damping effectiveness.
Solution Approach 2:
The insulating pendulum acts as an intermediary element between the high-potential primary mass and the ground-potential secondary mass. It provides both mechanical connection for damping functionality and electrical isolation, eliminating the need for complex high-potential damping mechanisms while maintaining both damping performance and electrical safety.
2Stability of the object's composition
If damping mechanisms are placed at high electrical potential to directly dampen loads on electrical components, then the damping effectiveness is improved, but the electrical isolation requirements and costs increase
Solution Approach 1:
The solution moves the secondary damping mass from the high-potential dimension to the ground-potential dimension through the insulating pendulum. This dimensional change in electrical potential allows the damping mechanism to operate at ground potential, eliminating the need for complex high-potential electrical isolation while maintaining damping effectiveness through the mechanical coupling of the pendulum system.
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
Reduces periodic loading on electrical components by oscillating a secondary mass at the same frequency, providing effective damping without the need for high-potential damping mechanisms, thus enhancing electrical isolation and reducing costs.
Implementation Method 1
A system includes an electrical component, an insulating support structure supporting the electrical component at a first electrical potential higher than an electrical ground potential, and an insulating pendulum having a proximal end attached to the electrical component and suspended away from the electrical component
Implementation Method 2
a tuned mass disposed at a distal end of the insulating pendulum at a second electrical potential less than the first electrical potential
Implementation Method 3
The system may also include a damping mechanism
Data Source
AI summary
A system includes an electrical component, an insulating support structure supporting the electrical component at a first electrical potential higher than an electrical ground potential, and an insulating pendulum having a proximal end attached to the electrical component and suspended away from the electrical component to at least partially span the first electrical potential, the insulating pendulum further includes a tuned mass disposed at a distal end of the pendulum at a second electrical potential less than the first electrical potential. The system may also include a damping mechanism.