Power cable modeling for PD pulse propagation and sensitivity

Wild, M.A.; Tenbohlen, Stefan; Gulski, Ε.; Jongen, Rogier

doi:10.1109/eic.2013.6554202

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…are used for detecting the PD. For detecting the electromagnetic waves propagating in shielded dielectric cables, normally a high-frequency current transformer (HFCT) and ultra high-frequency (UHF) sensor are used [18][19][20][21]. The HFCT is normally placed around the shielded cable or sometimes around the ground strip to collect the PD signals.…”

Section: Pd Pulse Sensormentioning

confidence: 99%

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Electromagnetic Waves Propagation and Detection in Shielded Dielectric Power Cables

Xu¹,

Liu²

2015

Advanced Electromagnetic Waves

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Section: Pd Pulse Sensormentioning

confidence: 99%

“…For processing the measured PD signals, different theories and algorithms have been proposed for optimizing PD testing results [18][19][20][21]. For partial discharge measurements, as stated in the above sections, the PD signals cannot be detected directly due to its nature as the PD is inside the insulation.…”

Section: Pd Pulse Sensormentioning

confidence: 99%

Electromagnetic Waves Propagation and Detection in Shielded Dielectric Power Cables

Xu¹,

Liu²

2015

Advanced Electromagnetic Waves

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“…The systematic error is removed via modelling and measuring the interface voltage with different terminal loads. After obtaining the voltages of two terminals of the cable, the frequency characteristics of the pulse can be obtained through fast Fourier transform (FFT) [31]. The attenuation and phase constant of the cable are estimated through the frequency characteristics of pulses obtained from the two terminals.…”

Section: Introductionmentioning

confidence: 99%

Development of the accurate localization of partial discharges in medium‐voltage XLPE cables based on pulse reconstruction

Yang

Zhao

Wang

et al. 2021

IET Generation Trans & Dist

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A method of reconstructing the original partial discharge (PD) signal to improve the accuracy of PD localization in cross-linked polyethylene (XLPE) cables is presented here. XLPE cables, extremely sensitive to PDs, are the most popular underground cables in urban grids. The conventional PD localization methods, based on evaluation of the arrival times of PD pulses in the time domain, are negatively affected by the dispersion and attenuation of PD signals propagating in the power cable. A method for the accurate localization of PDs realized through inverse frequency domain modelling (IFDM) is presented here. The method, eliminating the systematic localization error caused by the dispersion and attenuation, significantly improves the localization accuracy. The locations of the PD are identified by comparing peak values of the initial PD signals reconstructed from different extracted pulses. A method for evaluating the propagation constant of the cable is also presented. The efficiency of the accurate localization method was verified by laboratory experiments. Besides, the inherent limitations of the conventional PD localization method for longer cable tests are discussed. The inevitable location error in the conventional methods does not exist in the new method.

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Practical aspects of PD localization for long length power cables

Wild

Tenbohlen

Gulski³

et al. 2013

2013 IEEE Electrical Insulation Conference (EIC)

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The single sided PD measurement on power cable circuits is a common used technique for onsite PD detection and localization. Time domain reflectometry (TDR) of the measured pulses is generally implemented for locating the PD pulse origin. To get higher sensitivity in PD measurements and increased localization achievements a double sided measurement can be performed. Crucial for localization is the attenuation of the PD pulse amplitudes as a result of travelling along cable length. For this purpose some examples for classical one-sided TDR and double sided measurements are discussed.

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Power cable modeling for PD pulse propagation and sensitivity

Cited by 5 publications

References 2 publications

Electromagnetic Waves Propagation and Detection in Shielded Dielectric Power Cables

Electromagnetic Waves Propagation and Detection in Shielded Dielectric Power Cables

Development of the accurate localization of partial discharges in medium‐voltage XLPE cables based on pulse reconstruction

Practical aspects of PD localization for long length power cables

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