A Study on the Influence of SiO2 Nano Particles on the Failure of XLPE Underground Cables due to Electrical Treeing

Kalaivanan, C.; Chandrasekar, S.

doi:10.1007/s42835-019-00286-8

Cited by 7 publications

(4 citation statements)

References 17 publications

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“…Base material used in the present study is the silane grafted XLPE compound [19]. Silica nano fillers of size < 80 nm with a high purity (> 99%) was used for preparing XLPE nanocomposites.…”

Section: Preparation Of Nano-sio 2 Xlpe Compositementioning

confidence: 99%

“…XLPE granules and nanofillers were mixed thoroughly using brabender mixer and then poured into the plastic extruder machine at 200 °C. Hydraulic press was used to prepare the XLPE nanocomposite samples as explained in [19]. Filler concentration was varied as 1, 3, 5 and 10 wt% and the corresponding sample acronym used in the present work is reported in Table 1.…”

Section: Preparation Of Nano-sio 2 Xlpe Compositementioning

confidence: 99%

“…The prepared specimen is transparent enough in order to view the tree structure inside the sample. for understanding the electrical tree growth phenomena of XLPE nanocomposites [19].…”

Section: Preparation Of Nano-sio 2 Xlpe Compositementioning

confidence: 99%

“…Needle electrode is connected with HV AC source of 100 kV, 10 kVA transformer. Stereomicroscope equipped with CCD Camera and interfaced with PC was used to take the tree images as explained in [19]. PD signals were captured using high frequency current transformer (50 MHz bandwidth) connected in the ground lead and interfaced with a PD detector of 100 MSa/s acquisition rate and 1 mV input sensitivity.…”

Section: Electrical Treeing and Pd Measuring Setupmentioning

confidence: 99%

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Investigation of Electrical Tree Growth of XLPE Nano Composites using Time–Frequency Map and Clustering Analysis of PD Signals

Purushotham¹,

Chandrasekar²,

Montanari

2020

J. Electr. Eng. Technol.

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Failure of underground cables due to electrical treeing phenomena, i.e. formation of electrical discharges in the imperfections of cable insulation, is a major problem faced by electrical utilities. Many research works on nanocomposites are being carried out to improve the electrical treeing resistance of the XLPE cable insulation material. Technological advancements in communication and data analytic systems have shown the way for implementing online continuous partial discharge (PD) monitoring systems for high voltage apparatus. Hence collection of PD database of XLPE nanocomposites in the laboratory during entire electrical tree growth process is important for implementing efficient condition monitoring systems and relatively little work has been published in this area. In this work, PD characteristics of XLPE nanocomposites with 1, 3, 5 and 10 wt% silica were investigated. Electrical tree growth and corresponding phase resolved PD (PRPD) pattern were analysed with respect to time. Cluster analysis of equivalent time-frequency mapping of PD signals was carried out with respect to tree growth time period. Statistical analysis was performed for the entire set of PD data. Results show that cluster analysis of T-F map of PD data is useful in estimating early failure of insulating material due to treeing. Addition of silica nano fillers in the range of 3-5 wt% concentration significantly improves the PD resistance and breakdown time of XLPE material.

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Section: Preparation Of Nano-sio 2 Xlpe Compositementioning

confidence: 99%

Section: Preparation Of Nano-sio 2 Xlpe Compositementioning

confidence: 99%

“…The prepared specimen is transparent enough in order to view the tree structure inside the sample. for understanding the electrical tree growth phenomena of XLPE nanocomposites [19].…”

Section: Preparation Of Nano-sio 2 Xlpe Compositementioning

confidence: 99%

Section: Electrical Treeing and Pd Measuring Setupmentioning

confidence: 99%

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