A Detecting Method of Electric Shock Signal Based on Chaotic Theory

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Abstract:

It is difficult to detect and judge a weak electric shock signals in the leakage current accurate in the low-voltage power grid .A novel chaotic detection of the electric shock current and Lyapunov exponent is introduced in this paper .Electric shock current component is extracted according to the characteristics that chaotic system’s bifurcation action from chaotic state is sensitive to the weak signals and immune to noise .The largest Lyapunov exponent is proposed as the judgment criterion of phase transition of chaotic system. It can automatically recognize the critical state before and after electric shock.

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630-634

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January 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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[1] BRENNAN P V. Residual current device with high immunity to nuisance tripping [J]. IEE. Proceedings on Circuits Devices and Systems, 1993, 140(2): 140-144.

DOI: 10.1049/ip-g-2.1993.0022

Google Scholar

[2] KENDALL D. Development of high permeability cores for earth leakage protection devices[C]. UK. IEE, stevenage, United Kingdom, 1997, 435: 34-36.

Google Scholar

[3] LUIS M, RYSZARD R, FRANJO C. Design of a magneto residual current device using aqueous ferrofluid as the sensing material[C]. Institute of Electrical and Electronics Engineers Inc., 2004, 2: 804-807.

Google Scholar

[4] Zhou Hao, Li Yansong, Liu Jun etc. Simulation and analysis of weak signal detection in Oct. Power system protection and control, 2009, 37.

Google Scholar

[5] Mou Longhua , Meng Qinghai, Hu Tianlu. Selective leakage protection based on fault component of the active power[J]. Journal of China University of Mining & Technology. 2002, 31 (4): 380-383.

Google Scholar

[6] Yuan Zhenhai, Shen Xiangyun, Wang Xianfeng etc. Study of Selective Leakage Protection Principle Based on Zero Sequence Directive Current[J]. Transactions of China Electrotechnical Society, 2005, 20(4): 102-106.

Google Scholar

[7] Zhou Shuibin Tian Zhiguo Zhao Yingbing etc. Substation clock server meeting IEC61850[J]. Power system protection and control, 2010, 38(7) : 56-58.

Google Scholar

[8] Zheng Zhaoxin, Zhang Jun. Several Calculation Methods of Maximum Lyapunov Exponent[J]. Acta Seismologica Sinica,1994, 18(4): 86-89.

Google Scholar