Abnormal Vibration Diagnostic Methods of Transformers Caused by Two Defects

doi:10.11930/j.issn.1004-9649.2014.6.55.5

Abstract

Abstract: Iron cores and windings are the key components of power transformers, which are also the causes of transformers vibrations. By loosing a fastening device to stimulate abnormal vibration and installing seven sensors in the internal and external of a transformer to research the differences between internal and external data, a 10 kV transformer defect model was established in a laboratory, which can obtain the best sensor arrangement for measuring transformer vibrations. By studying the vibration laws of cores windings respectively at different no-load voltages and load currents, eventually come the methods for the diagnosis of transformer core and winding looses.

Key words: transformer, core, winding, vibration test

CLC Number:

TM464

HAO Zhen, LONG Kai-hua, ZHAO Yan-kun, WU Yan-wei, LU Wei. Abnormal Vibration Diagnostic Methods of Transformers Caused by Two Defects[J]. Electric Power, 2014, 47(6): 55-60.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.6.55.5

https://www.electricpower.com.cn/EN/Y2014/V47/I6/55

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