Research on the online monitoring technique for transformer oil level based on ultrasonic sensors
Yongcan Zhu,
Kaiyang Bing,
Dongyang Liu
et al.
Abstract:In order to solve the problem of remote oil level measurement for unmanned transformers, this paper proposes an online monitoring technology for transformer oil level based on ultrasonic sensors. Subsequently, a finite element model and experimental testing platform were constructed to analyse and verify the influencing factors of the transformer oil level sensors. The results indicated that there is a lower measurement error at 140 kHz in the ultrasonic frequency range of 20–320 kHz, which can be selected as … Show more
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