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Vol. 34, No. 8(3), S&M3042

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Vol. 32, No. 8(2), S&M2292

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Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 29, Number 8 (2017)
Copyright(C) MYU K.K.
pp. 1135-1146
S&M1406 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2017.1510
Published: August 16, 2017

Factors Affecting Pulse Injection from Measuring Electrode Based on the Pulsed Electroacoustic Technology for Coaxial Cables [PDF]

Wang Xia, Hao Jia-Qi, Xiong Jin-Zhou, Wu Kai, Fu Ming-Li, and Hou Shuai

(Received December 1, 2016; Accepted March 23, 2017)

Keywords: pulsed electroacoustic method, coaxial cable, coupled pulse, pulse injection, outer semiconductive layer

In the pulsed electroacoustic (PEA) space charge measurement system used for coaxial cables, the waveform of a coupled pulse will directly affect space charge profiles in cable insulation. In this paper, on the basis of the PEA measurement system with pulse injection from a measuring electrode, the original charge acoustic signals in a 35 kV cross-linked polyethylene (XLPE) cable were collected directly from the oscilloscope under different ground distances between the measuring point and the ground point along a cable’s semiconductive (SC) layer. At the same time, the effects of ground distance, cable specification, and cable length on the waveform of a coupled pulse were studied through a series of experiments and simulations. The results show that the amplitude of the coupled pulse is directly proportional to the ground distance but inversely proportional to the cable cross section or voltage class. Furthermore, the pulse coupling efficiency is almost the same only if the cables have the same diameter of the outer SC layer. Therefore, a constant pulse coupling efficiency can be obtained by adjusting the ground distance according to the diameter of the cable’s outer SC layer.

Corresponding author: Wang Xia


Cite this article
Wang Xia, Hao Jia-Qi, Xiong Jin-Zhou, Wu Kai, Fu Ming-Li, and Hou Shuai, Factors Affecting Pulse Injection from Measuring Electrode Based on the Pulsed Electroacoustic Technology for Coaxial Cables, Sens. Mater., Vol. 29, No. 8, 2017, p. 1135-1146.



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