Novel online RF technique for detection of water trees in underground powered distribution cables

Gonzalez, Abraham; Paprotny, Igor; White, Richard M.; Wright, Paul K.

doi:10.1109/eic.2011.5996175

2011 Electrical Insulation Conference (EIC). 2011

DOI: 10.1109/eic.2011.5996175

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Novel online RF technique for detection of water trees in underground powered distribution cables

Abraham Gonzalez

Igor Paprotny

Richard M. White

et al.

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“…Therefore, by the time the partial discharge equipment has detected anything, the cable will be minutes away from failure [3]. Some research is also looking into using radio frequency signals to measure dielectric loss and the change in permittivity of an energized cable's insulation under the presence of water trees [7], and should be noted as a method for online detection of water trees.…”

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Water Tree Detection in Underground Cables Using Time Domain Reflectometry

Burkes

Makram

Hadidi

2015

IEEE Power Energy Technol. Syst. J.

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This paper proposes to use time domain reflectometry (TDR) to detect water trees in underground residential distribution (URD) cables. Water trees are very dangerous to underground cables. They can grow for years without any change on the performance of the cable, and then can cause the cable to fault unexpectedly. Therefore, a method to detect water trees in URD cables is proposed in this paper. The method implements an optimal pulse generator placement algorithm on a distribution feeder for performing TDR. It can determine the exact location of a water tree in a cable, and it does not rely on the length of the cable or the type of cable used. The method can also detect multiple water trees on the same cable, and can be installed on existing systems, since it does not require data of the healthy system. It is a periodic monitoring system where pulses are sent throughout the year. The proposed method has been verified using multiple case studies on a real distribution feeder. Using TDR, optimal pulse generator placement, and subtraction of cables' measured signal in time domain with similar measured signals a critical distribution feeder's health has been monitored successfully.INDEX TERMS Time domain reflectometry (TDR), underground residential distribution (URD), water tree.

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Water Tree Detection in Underground Cables Using Time Domain Reflectometry

Burkes

Makram

Hadidi

2015

IEEE Power Energy Technol. Syst. J.

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A New Approach to the Analysis of Water Treeing Using Feature Extraction of Vented Type Water Tree Images

Karhan

Çakir

Ugur

2021

J. Electr. Eng. Technol.

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Novel online RF technique for detection of water trees in underground powered distribution cables

Cited by 2 publications

References 14 publications

Water Tree Detection in Underground Cables Using Time Domain Reflectometry

Water Tree Detection in Underground Cables Using Time Domain Reflectometry

A New Approach to the Analysis of Water Treeing Using Feature Extraction of Vented Type Water Tree Images

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