Development of failure prediction method for accessories of XLPE cable lines

Kurahashi, Kiyoshi; Asari, K. Vijayan; Yatsuka, K.; Watanabe, M.; Kishi, K.; Inoue, Hitoshi

doi:10.1109/icpadm.1991.172161

Cited by 3 publications

(2 citation statements)

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“…Similar to a standard bridge arrangement, two capacitive sensors are either placed longitudinally [lo, 11,15,21,35] or circumferential [16,21] at a joint as shown in Figure 4 or Figure 5, respectively. In both cases the PD signal is obtained by taking the difference between signals frQm electrode I and electrode 11.…”

Section: Differential Capacitive Measurementmentioning

confidence: 99%

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Discrimination between internal PD and other pulses using directional coupling sensors on HV cable systems

Pommerenke

Strehl

Heinrich

et al. 1999

IEEE Trans. Dielect. Electr. Insul.

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On-site partial discharge (PD) measurement is required to ensure proper installation of extra high voltage (EHV) cable systems accessories. To achieve high sensitivity and good localization, two problems have to be overcome. First, the strong high frequency attenuation in long XLPE cables requires that the sensors be located along the cable, preferably directly at the accessories. Secondly, the detection system must be able to distinguish internal PD from other pulses. This paper describes a solution based on directional coupling sensors and a data visualization system, which displays phase-amplitude diagrams for individual PD sources which are identified by the direction of pulse propagation. It has been applied to on-site measurements, type and routine testing of HV cable joints and stress cones. Due to the reliable discrimination between internal PD from the accessory measured and from other pulses, testing can be done in unshielded rooms even using terminations with internal PCI and corona. The method works independently well on line voltage, resonance sources, oscil1,ating voltages and 0.1 Hz. cosine-square voltage. It has been used to verify the cable accessories installed in the 6.3 km long 380 kV cable system in Berlin, Germany

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Section: Differential Capacitive Measurementmentioning

confidence: 99%

“…Usually the capacitive electrodes are placed above the semicon layers, but it is also possible to use the stress cones or the semicon layers around a joint as pick-up electrodes. A dual capacitive pick-up [lo, 15,21,34,35] allows discriminating noise from critical PD. This topology is analyzed further in this paper.…”

Section: Capacitive Couplingmentioning

confidence: 99%

Discrimination between internal PD and other pulses using directional coupling sensors on HV cable systems

Pommerenke

Strehl

Heinrich

et al. 1999

IEEE Trans. Dielect. Electr. Insul.

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On-site Applications of the VHF Partial Discharge Detection Method for the Underground Power Cable Terminations

Lim

Choi²,

Lee³

et al. 2018

2018 Condition Monitoring and Diagnosis (CMD)

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The study of partial discharge generated from defects in XLPE insulation

Kishi

Hatsukawa

Yatsuka

et al.

Proceedings of 1994 4th International Conference on Properties and Applications of Dielectric Materials (ICPADM)

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The authors have developed of partial discharge measurement techniques for underground transmission lines. However, confirmation of the occurrence of partial discharges still depends on the experience of the maintenance staff. The authors studied the characteristics of partial discharges caused by failures in exausion molded joints and investigated methods for distinguishing partial discharges from noises by evaluating the time, voltage and phase characteristics of the partial discharges. Tbe occurrence phase characteristics of partial discharges have been investigated and arc a useful index for distinguishing partial discharges from noises.

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Development of failure prediction method for accessories of XLPE cable lines

Cited by 3 publications

References 0 publications

Discrimination between internal PD and other pulses using directional coupling sensors on HV cable systems

Discrimination between internal PD and other pulses using directional coupling sensors on HV cable systems

On-site Applications of the VHF Partial Discharge Detection Method for the Underground Power Cable Terminations

The study of partial discharge generated from defects in XLPE insulation

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