基于Duffing混沌振子的电缆绝缘劣化监测方法研究

doi:10.3976/j.issn.1002-4026.2015.03.019

SHANDONG SCIENCE ›› 2015, Vol. 28 ›› Issue (3): 104-109.doi: 10.3976/j.issn.1002-4026.2015.03.019

• Other Research Article • Previous Articles Next Articles

Duffing chaotic oscillator based cable insulation degradation monitoring method

HE Yongnan1, LI Dahai2, REN Hongxiang2*

1.Shaanxi Baoji Beimafang Coal Co. Ltd., Baoji 721500, China; 2.School of Information and Electrical Engineering,China University of Mining and Technology, Xuzhou 221008, China

Received:2014-10-11 Published:2015-06-20 Online:2015-06-20

Abstract

Abstract: Insulation performance of XLPE power cable is closely related to the formation and development of its water trees. We employ AC voltage superimposition approach to monitor its insulation status. We also establish a Duffing chaotic oscillator with 1 Hz periodic driving force to accurately measure 1 Hz characteristic current by means of its characteristic that it is sensitive to the signal whose frequency is identical with the periodic signal, but suppressive to noise.Simulation results show that its detection precision is 10 nA.

Key words: XLPE power cable, online monitoring, AC superposition, Duffing chaotic oscillator

CLC Number:

TM247

HE Yongnan, LI Dahai, REN Hongxiang. Duffing chaotic oscillator based cable insulation degradation monitoring method[J].SHANDONG SCIENCE, 2015, 28(3): 104-109.

References

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Duffing chaotic oscillator based cable insulation degradation monitoring method

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