Transformer Internal Defect Detection Apparatus
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Solution Overview
Problem
Current methods for detecting internal defects in transformers are limited by high external noise interference, low sensor sensitivity, and inability to detect thermal faults, with existing solutions either unsuitable for online monitoring or failing to account for complex internal structures affecting electromagnetic wave propagation.
Innovation Solution
An apparatus with a metal member and multiple electrodes, arranged in parallel with varying lengths and areas, and a gas sensor integrated to minimize signal interference, allowing for simultaneous detection of electrical and thermal defects within transformers while reducing reflection loss and optimizing sensor placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a gas sensor is provided at the drain valve to detect thermal faults, then thermal fault detection capability is improved, but the electromagnetic wave detection performance is affected by the complex internal structure
Solution Approach 1:
The detection system is segmented into thermal fault detection (gas sensor on drain valve) and electrical fault detection (electromagnetic wave sensors positioned separately). This allows the gas sensor to provide thermal fault detection capability while electromagnetic wave sensors maintain optimal detection performance by being positioned away from the complex internal structure of the drain valve.
2Adaptability or versatility
If an integrated sensor system is used to detect both electrical and thermal faults, then detection versatility is improved, but device complexity increases affecting sensor performance
Solution Approach 1:
The patent extracts the thermal fault detection function into a separate gas sensor system mounted on the drain valve, while electrical fault detection is handled by electromagnetic wave sensors positioned separately. This extraction achieves detection versatility for both thermal and electrical faults while avoiding the performance degradation that would result from integrating all sensors into a single complex assembly.
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
Enables reliable detection of both electrical and thermal defects inside transformers, improving detection accuracy and reducing reflection loss, allowing for effective online monitoring without affecting electromagnetic wave detection performance.
Implementation Method 1
a plurality of electrodes provided around the metal member to detect electric signals generated due to the internal defects of the transformer
Implementation Method 2
The second electrodes each may generate resonance different from the metal member
Data Source
AI summary
An apparatus for detecting internal defects in a transformer is provided. The apparatus detecting internal defects that arise in the interior by integrating an electrode for electrically detecting defects and a sensor for detecting internal gas into a single body and inserting same into the interior. The apparatus for detecting internal defects in a transformer according to the present invention comprises: a metal member of a set length; a plurality of electrodes, disposed around the metal member, for detecting electrical signals generated due to internal defects of the transformer; an insulating member formed so as to contain the metal member and plurality of electrodes; and a gas sensor, installed at the end of the metal member, for detecting gas inside the transformer.