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Article

A Segmented Preprocessing Method for the Vibration Signal of an On-Load Tap Changer

College of Information Science & Engineering, Huaqiao University, Xiamen 361021, China
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Author to whom correspondence should be addressed.
Electronics 2021, 10(2), 131; https://doi.org/10.3390/electronics10020131
Received: 8 December 2020 / Revised: 4 January 2021 / Accepted: 5 January 2021 / Published: 9 January 2021
The vibration signal of an on-load tap changer (OLTC) consists of a series of sharp vibration bursts, and its fault feature in certain periods is easily missed. This study considered that preprocessing the vibration signal of the OLTC in segments could effectively solve the aforementioned problem. First, the collection of the signal is discussed, the waveform characteristics of the vibration signal when the OLTC was in normal action was described, and the selection of the signal was analyzed. Second, the time domain characteristics and frequency spectrum analyses were carried out to demonstrate the necessity of segmented preprocessing. Further, the segmented preprocessing method for the vibration signal of the OLTC was presented. Finally, the main mechanical faults of the OLTC were simulated, and the vibration signals were collected to carry out the fault diagnosis experiment on the OLTC. The experimental results showed that the accuracy of the fault diagnosis increased from 94.30% of the nonsegmented preprocessing to 98.46% of the segmented preprocessing. The increase was greater, especially for contact wear faults. The method was successfully applied to the actual project. View Full-Text
Keywords: fault diagnosis; feature extraction; OLTC; segmented preprocessing; vibration fault diagnosis; feature extraction; OLTC; segmented preprocessing; vibration
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MDPI and ACS Style

Shang, R.; Peng, C.; Fang, R. A Segmented Preprocessing Method for the Vibration Signal of an On-Load Tap Changer. Electronics 2021, 10, 131. https://doi.org/10.3390/electronics10020131

AMA Style

Shang R, Peng C, Fang R. A Segmented Preprocessing Method for the Vibration Signal of an On-Load Tap Changer. Electronics. 2021; 10(2):131. https://doi.org/10.3390/electronics10020131

Chicago/Turabian Style

Shang, Rongyan, Changqing Peng, and Ruiming Fang. 2021. "A Segmented Preprocessing Method for the Vibration Signal of an On-Load Tap Changer" Electronics 10, no. 2: 131. https://doi.org/10.3390/electronics10020131

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