OLTC Flywheel Drive Layout for Compact Energy Release
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Solution Overview
Problem
Existing OLTC designs face challenges in accumulating and synchronously releasing energy efficiently without damaging components, particularly due to the limitations of flywheel size and shape, which affect construction space and dielectric field distribution.
Innovation Solution
A driving system for OLTCs featuring a vacuum interrupter mechanism, energy accumulation mechanism, and concentrically arranged annular flywheel, coupled with a primary driving unit, which allows controlled energy accumulation and release, optimizing inertial mass distribution and dielectric field distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a large flywheel is used to accumulate sufficient energy for OLTC operation, then the energy accumulation capability is improved, but the construction space required increases and the dielectric field distribution is severely impacted
Solution Approach 1:
The patent places the flywheel mechanism inside the oil tank of the OLTC, nesting the energy accumulation component within the existing structural boundary. This allows the flywheel to occupy space that would otherwise be unused or partially used, thereby improving energy accumulation capability without proportionally increasing the overall construction space
Solution Approach 2:
The patent optimizes the flywheel's physical parameters including its diameter, width, and mass distribution to achieve the required moment of inertia for sufficient energy accumulation. By carefully selecting these parameters, the system achieves adequate energy storage while minimizing the flywheel's spatial footprint and its impact on the dielectric field distribution in the oil tank
2Power
If a large flywheel is used to generate sufficient inertia for driving mechanism operation, then the driving performance is improved, but the construction space and impact on dielectric field distribution worsen
Solution Approach 1:
The flywheel is nested within the oil tank structure, positioning it in a location where its physical presence has minimal disruption to the dielectric field. The oil tank's geometry and the flywheel's placement are coordinated to reduce field distortion while maintaining the flywheel's inertial properties for adequate driving performance
Solution Approach 2:
The patent optimizes the flywheel's mass distribution and dimensional parameters to achieve the required moment of inertia for reliable driving performance. By adjusting these parameters, the system achieves sufficient driving capability while minimizing the flywheel's electromagnetic interference and impact on dielectric field distribution
3Reliability
If the energy accumulation mechanism releases more energy to ensure normal OLTC operation, then the operational reliability is improved, but the risk of component damage increases
Solution Approach 1:
The patent incorporates a control mechanism that monitors the energy release from the flywheel and the operational state of the OLTC. This feedback system allows the drive to adjust the energy transfer in real-time, ensuring sufficient energy is released for reliable operation while preventing excessive energy release that could damage components. The control system modulates the coupling between the flywheel and the driving mechanism based on actual operational needs
Solution Approach 2:
The patent employs a dynamic coupling mechanism between the flywheel and the OLTC driving mechanism, allowing the energy transfer to be continuously adjusted during operation. This dynamic control enables the system to release adequate energy for reliable switching operations while automatically limiting the energy transfer to prevent component damage, thereby resolving the contradiction between reliability and component strength
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
The system provides stable and reliable operation with compact size, ensuring efficient energy transfer to OLTC components while preventing component damage, enhancing dielectric field distribution and reducing construction space.
Implementation Method 1
The flywheel mechanism comprises a flywheel. The energy accumulation mechanism is mechanically coupled with a primary driving unit. The energy accumulation mechanism is configured to accumulate and release energy for combined motion of the vacuum interrupter driving mechanism and the flywheel mechanism.
Implementation Method 2
The driving mechanism of an OLTC commonly comprises an energy accumulation mechanism and a flywheel. For the driving mechanism in the majority of cases the possible amount of energy directly correlates with two main parameters—the amount of energy released from the energy accumulation mechanism and the generated inertia from the flywheel.
Implementation Method 3
The vacuum interrupter driving mechanism is configured to drive a vacuum interrupter of the OLTC. The vacuum interrupter driving mechanism and the flywheel mechanism are arranged along a main driving axis and the flywheel is concentrically arranged around the main driving axis.
Data Source
AI summary
The present disclosure relates to a driving system for an on-load tap changer, comprising a vacuum interrupter driving mechanism configured to drive a vacuum interrupter of the on-load tap changer, an energy accumulation mechanism mechanically coupled with the vacuum interrupter driving mechanism, and a flywheel mechanism mechanically coupled with the vacuum interrupter driving mechanism. The flywheel mechanism comprises a flywheel. The energy accumulation mechanism is mechanically coupled with a primary driving unit and is configured to accumulate and release energy for combined motion of the vacuum interrupter driving mechanism and the flywheel mechanism. The vacuum interrupter driving mechanism and the flywheel mechanism are arranged along a main driving axis and the flywheel is concentrically arranged around the main driving axis.