Dry Transformer Taps Panel Sealed Compartment
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Solution Overview
Problem
Existing dry distribution transformers lack adequate protection for their taps panels, especially in moist or submerged environments, leading to potential electrical discharges and equipment failure, and existing solutions using liquid dielectric materials are complex and environmentally hazardous.
Innovation Solution
A hermetically sealed compartment with a removable solid resin insulation and electrostatic shielding for the taps panel, allowing for the use of dry transformers in submerged conditions without the risks associated with liquid dielectric materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the taps panel is left unprotected in dry distribution transformers, then the structure remains simple and accessible, but the transformer cannot be used in moist or submerged environments due to lack of insulation
Solution Approach 1:
A removable insulating cover made of solid resin material is applied to the taps panel. This cover acts as a protective shell that provides electrical insulation when the transformer is in submerged or moist environments, while allowing the taps to remain accessible when removed. The cover can be easily installed and removed without complex assembly procedures.
Solution Approach 2:
The insulating cover is designed as a separate, removable component rather than being permanently integrated into the transformer structure. This allows the cover to be taken off when tap adjustment is needed and reinstalled when environmental protection is required, providing flexibility without permanent structural modification.
2Reliability
If liquid dielectric materials are used to protect the taps panel, then insulation in submerged environments is achieved, but the solution becomes complex and environmentally hazardous
Solution Approach 1:
The invention changes the physical state of the dielectric material from liquid to solid. The solid resin cover provides the necessary electrical insulation properties without the handling, containment, and environmental disposal issues associated with liquid dielectric materials. This parameter change simplifies the overall system while maintaining insulation reliability.
Solution Approach 2:
The solid resin cover is a simple, replaceable component that can be manufactured at low cost. If damaged or contaminated, the entire cover can be removed and replaced without affecting the transformer's core components, providing a simple and economical protection solution.
3Reliability
If the taps panel is sealed in a hermetically closed compartment with solid resin insulation, then protection in submerged environments is achieved, but the taps become less accessible
Solution Approach 1:
The protection system is designed to be dynamic rather than static. The removable cover allows the taps panel to transition between two states: protected (cover installed) for normal operation in moist environments, and accessible (cover removed) for tap adjustment. This dynamic design resolves the contradiction between protection and accessibility.
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 solution provides reliable and safe operation in submerged environments by preventing moisture and water entry, reducing the risk of electrical discharges, and eliminating the need for hazardous liquid dielectric materials, while enhancing dielectric characteristics and reducing material usage.
Implementation Method 1
a hermetically sealed compartment with a removable solid resin insulation
Implementation Method 2
A hermetically sealed compartment with a removable solid resin insulation
Implementation Method 3
electrostatic shielding for the taps panel
Data Source
Figure 1~2
Figure 3~5
Figure 4
AI summary
The present invention relates to a dry distribution transformer comprising a housing (1'), a coil (200), a sealed compartment (100) and a taps panel (1 10) associated to the coil (200). The taps panel (110) has an electrostatic shield (107) and is positioned inside the sealed compartment (100), the sealed compartment (100) being filled with a solid dielectric material and protected by a cover (120). One also describes an electric insulation method for a taps panel of a dry distribution transformer and taps panel for a dry distribution transformer filled with removable insulating resin. The coil (200) has a grounded (115) electrostatic shield (107).