Time domain analysis of partial discharges envelope in medium voltage XLPE cables

Granado, J.; Álvarez-Arroyo, César; Torralba, A.; Macías, José Luis Salcini; Chávez, J.; Payán, Manuel Burgos

doi:10.1016/j.epsr.2015.04.009

Cited by 20 publications

(11 citation statements)

References 10 publications

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“…Of these, XLPE-insulated cables have become the dominant power cable variety. In recent years, they have been widely used in power transmission and distribution grid systems, because of the relatively simple manufacturing process and their excellent mechanical, electrical, and thermal performance [1,2]. During use, cables are affected by electricity, heat, moisture, and other factors that result from aging and electrical performance degradation.…”

Section: Introductionmentioning

confidence: 99%

Research on Mechanical, Physicochemical and Electrical Properties of XLPE-Insulated Cables under Electrical-Thermal Aging

Zhang

et al. 2020

Journal of Nanomaterials

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The stabilization of cross-linked polyethylene (XLPE) cables is crucial to the safe working of power systems. In order to investigate the aging characteristics of cable insulation in the process of operation, 10 kV XLPE cables were electrically-thermally aged at an AC voltage of 26.1 kV and three temperatures: 103°C, 114°C, and 135°C. Cable samples at five aging stages were cut into slices and tested to determine their mechanical, physicochemical properties and dielectric strength. The changes in these properties were analyzed in terms of aging time. The mechanical strength and oxidation induction time have the same changing trend of decrease, because the chemical bonds of the cable insulation material are fractured when the XLPE cable is aged. The AC space charge presented a trend of gradual accumulation with aging time. The breakdown field strength after AC voltage application decreases monotonically with aging time, which could be a characteristic index to evaluate the degradation degree of the cable insulation. This research contributes to the comprehension of degradation mechanism and discovery of aging assessment criteria, which is of great significance in assessments of insulation properties and fault detection on power cables.

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Section: Introductionmentioning

confidence: 99%

Research on Mechanical, Physicochemical and Electrical Properties of XLPE-Insulated Cables under Electrical-Thermal Aging

Zhang

et al. 2020

Journal of Nanomaterials

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“…Cross-linked polyethylene (XLPE) insulated cables form a pivotal part of power generation, transmission, and distribution networks [1][2][3]. The integrity of XLPE cable insulation is directly associated with the reliability of power systems.…”

Section: Introductionmentioning

confidence: 99%

On‐site partial discharge detection of power cables using a novel DAC technique supplied by a capacitor bank

Deng

et al. 2019

IET Generation, Transmission & Distribution

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“…It is well-known that dispersion has a significant effect on the pulse shape [8], as well as negative implications for PD location using techniques such as Time Domain Reflectometry (TDR) [3]. Dispersion has also negative effect on PD pattern classification and recognition [9].…”

Section: Introductionmentioning

confidence: 99%

Modeling dispersion of partial discharges due to propagation velocity variation in power cables

Granado

Torralba

Álvarez-Arroyo

2016

Electric Power Systems Research

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Time domain analysis of partial discharges envelope in medium voltage XLPE cables

Cited by 20 publications

References 10 publications

Research on Mechanical, Physicochemical and Electrical Properties of XLPE-Insulated Cables under Electrical-Thermal Aging

Research on Mechanical, Physicochemical and Electrical Properties of XLPE-Insulated Cables under Electrical-Thermal Aging

On‐site partial discharge detection of power cables using a novel DAC technique supplied by a capacitor bank

Modeling dispersion of partial discharges due to propagation velocity variation in power cables

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