Suppression of High-Frequency Interference in Signal Loop

Guan Qun Zhao; Ze Zhong Wang; Bo Dong; Li Li Zhao; Ke Wang

doi:10.4028/www.scientific.net/AMM.713-715.1081

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 713-715Suppression of High-Frequency Interference in...

Suppression of High-Frequency Interference in Signal Loop

Abstract:

With the deep and promotion of unattended work in substations, the correct rate of remote signal becomes an important index in automation scheduling system. For remote signal false caused by high-frequency interferences in substation, we propose the use of Ni-Zn ferrite ring to suppress high-frequency interferences. The frequency-impedance characteristics of ferrite ring with different turns are tested. And the inhibitory effect of ferrite ring on interferences below and above 100MHz is measured separately. We installed ferrite rings in remote signal loops, and compared the voltage waveforms before and after installation. Experimental results provide some references to suppress high-frequency interferences by Ni-Zn ferrite ring.

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Periodical:

Applied Mechanics and Materials (Volumes 713-715)

Pages:

1081-1085

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.713-715.1081

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Online since:

January 2015

Authors:

Guan Qun Zhao*, Ze Zhong Wang, Bo Dong, Li Li Zhao, Ke Wang

Keywords:

Ferrite Ring, High-Frequency Interference, Interference Suppression, Remote Signal

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