Abnormal Sound
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Loosening
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Core ungrounded
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Poor switch contact
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Electrical quantity anomalies such as voltageissues, harmonics, phase loss, secondary shortcircuit, etc.
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Bushing contamination
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Overload, etc.
Insulation Anomaly
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Transformer core multiple grounding
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Multiple grounding caused by clamping piece insulation damage
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Surface moisture
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Contamination
Overheating
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Local interlayer or interturn short circuit
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Internal looseness leading to high contact resistance
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Secondary circuit short circuit, etc.
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Long-term overload or accident overload circuit, etc.
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Deterioration of heat dissipation condi- tions
Transformer intelligent operation and maintenance is primarily a solution that integrates various sensing devices for transformer condition monitoring. By leveraging technologies such as edge computing, big data, the Internet of Things (loT), and data analysis, it achieves a series of intelligent functions for transformers, including self-perception, self-diagnosis, and self-assessment.
