Development of Partial Discharge Diagnosis Method by Focusing on Ultrasonic Frequency

Mutakamihigashi, Tatsuya; Inoue, Shunsuke; Okada, Sho; Ueno, H.

doi:10.1007/978-3-030-31680-8_62

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2022

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“…Insulation deterioration caused by partial discharge in electrical equipment is one of the main causes of equipment failure, so it is important to monitor partial discharge in switchboard in real time. [1] [2] Ultrasound is generated during partial discharge. The method to determine the internal insulation of the equipment by the detected ultrasonic signal is called ultrasonic detection method, which has the advantage of easy on-line monitoring of electrical equipment.…”

Section: Introductionmentioning

confidence: 99%

Study on Partial Discharge Fault Diagnosis of High Voltage Switchboard Based on Ultrasound Detection

Liu

Qiu

2022

J. Phys.: Conf. Ser.

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In view of the problem that the partial discharge type of switchgear still needs to be judged by the staff according to the collected phase diagram and experience after the erection of ultrasonic sensor, this paper establishes four common partial discharge models in switchgear, analyzes the collected ultrasonic signals in time domain and frequency domain, extracts 8 characteristic parameters, and judges the fault according to the characteristic parameters by support vector machine, The results show that the recognition rate is high, which lays a foundation for the application of ultrasonic testing in automatic partial discharge diagnosis and fault recognition.

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Section: Introductionmentioning

confidence: 99%