油浸纸套管尾部受潮故障模拟及早期特征

doi:10.19595/j.cnki.1000-6753.tces.170542

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Abstract In order to study the diagnosis and detection methods of insulation moisure for oil-impregnated paper(OIP) bushing, an OIP model with transparent sheaths was designed and a microinjection device was adopted to put deionized water into OIP model along top inner wall. The partial discharge(PD), dissipate factor, capacitance and frequency domain spectroscopy were measured after tail moisture in OIP bushing. The results presented that the capacitance was increasing with the moisture time under rated voltage ,instead of no change of tanδ and PD.The tendency of tanδ at0.001 Hz had an increasing trend for tail moisture bushing. PD might occur under 1.5 times rate voltage after tail moisture in OIP. It has the possibility of misjudgment for the moisture deposition of bushing by traditional measurement.It is suggested that the both PD under 1.5 times rate voltage and FDS should be addedfor suspected moisture bushing in off-line test.And the mearsurement of capacitance in online test should be added in order to diagnose the tail mosture of bushing earily.

Key words： Oil-impregnated paper bushing early moisture partial discharge capacitance frequency domain spectroscopy fault diagnosis

Received: 26 April 2017 Published: 13 June 2018

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TM855

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	Dai Quanmin
	Qi Bo
	Li Chengrong
	Zhuo Ran
	Fu Mingli

Cite this article:

Dai Quanmin,Qi Bo,Li Chengrong等. Fault Simulation and Early Characteristics of Tail Moisture in Oil-Immigrated Paper Bushing[J]. Transactions of China Electrotechnical Society, 2018, 33(11): 2613-2619.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170542 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I11/2613

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