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Deterioration of xlpe insulation in high voltage cable systems and testing of quality by applying pulses of high voltage

Authors: Kostiukov, Ivan Aleksandrovich;

Deterioration of xlpe insulation in high voltage cable systems and testing of quality by applying pulses of high voltage

Abstract

The wide spreading of energy distribution power cable lines made by means of applying cables with insulation made of cross-linked polyethylene usually is associated with a significant number of advantages in terms of better technical performance that such cables have in comparison with traditional cables with paper-impregnated insulation. Nevertheless, the necessity to ensure a sufficient level of production quality, as well as the requirements for increasing the operating time of power cable lines, make it urgent to develop insulation quality control methods, including control methods which imply applying of testing impulses that simulate overvoltages that occur in power systems due to lightning strikes. The other aspect of this problemis the necessity of the elaboration of physical models for the description of deterioration of XLPE insulation of power cables under the impact of various external factors. For recent years the problem of testing XLPE insulation by high voltage pulses, similarly to the problem of elaboration of physical models for the description of deterioration of XLPE insulation, have been considered by many authors. This paper gives a brief review of some main recent research that have been focused on the problem of endurance and aging of XLPE insulation due to overvoltage caused by various reasons. The main scope was focused on the problem of testing the endurance of XLPE insulation to the voltage pulses that imitate overvoltage due to lightning strikes. Some of the theories of aging of dielectric materials under the impact of impulse and alternating electrical fields and the influence of these factors on lifetime of dielectric materials have also been discussed. Проведено стислий огляд основних наукових досліджень, в яких розглядається проблема стійкості ізоляції із зшитого поліетилену до дії перенапруг, що викликані різними причинами, а також проблема старіння ізоляції вказаного типу під дією перенапруг різного характеру. Основна увага приділена проведенню випробувань стійності поліетиленової ізоляції до сформованих імпульсів, що імітують перенапруги які виникають внаслідок ударів блискавки. Проведено огляд деяких теорій старіння діелектричних матеріалів під дією змінних та імпульсних електричних полів та вплив цих факторів на ресурс ізоляції.

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Keywords

pulse overvoltage, space charge, импульсные перенапряжения; старение изоляции из сшитого полиэтилена; объемный заряд; водные триинги, імпульсні перенапруги, pulse overvoltage; deterioration of XLPE insulation; space charge; water tree channels, water tree channels, об’ємний заряд, імпульсні перенапруги; старіння ізоляції із зшитого поліетилену; об’ємний заряд; водні тріінги, cross-linked polyethylene

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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