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Готові списки джерел за темами / Cross-linked insulation / Статті в журналах

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Статті в журналах з теми "Cross-linked insulation"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 19 липня 2025

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1

Semenov, Vyacheslav, Sergey Kozlov, Alexey Zhukov, Karen Ter-Zakaryan, Ekaterina Zinovieva, and Ekaterina Fomina. "Insulation systems for buildings and structures based on expanded polyethylene." MATEC Web of Conferences 251 (2018): 01014. http://dx.doi.org/10.1051/matecconf/201825101014.

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Анотація:

Insulation systems for buildings and structures imply the use of efficient thermal insulation products based on mineral wool, expanded polystyrene, expanded polyurethane, etc. For a long time, products from non-cross-linked expanded polyethylene were used as insulation for pipelines, reflective insulation, protection against air infiltration, etc. Modern technologies and engineering solutions allowed widening the field of application of non-cross-linked expanded polyethylene (NXLPE) as a construction insulation material. In particular, we can consider a complex of insulation systems for walls,

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2

Oleksyuk, I. V. "Aging of Cross-Linked Polyethylene Insulation Cable Lines." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 64, no. 2 (2021): 121–29. http://dx.doi.org/10.21122/1029-7448-2021-64-2-121-129.

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Abstract. Preference is given to cable lines with cross-linked polyethylene insulation in electrical networks with a nominal voltage of 10 kV during reconstruction of existing and construction of new industrial enterprises. The standard service life of such cables is at least 30 years (subject to the conditions of storage, transportation, installation and operation), and the actual one is determined by the technical condition of the cable. The service life of a cable line depends on the state of its insulation, the aging of which occurs under the influence of several factors. Conventionally, a

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3

Hadi, Nabipour Afrouzi, Zulkurnain Abdul-Malek, Saeed Vahabi Mashak, and A. R. Naderipour. "Three-Dimensional Potential and Electric Field Distributions in HV Cable Insulation Containing Multiple Cavities." Advanced Materials Research 845 (December 2013): 372–77. http://dx.doi.org/10.4028/www.scientific.net/amr.845.372.

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Cross-linked polyethylene is widely used as electrical insulation because of its excellent electrical properties such as low dielectric constant, low dielectric loss and also due to its excellent chemical resistance and mechanical flexibility. Nevertheless, the most important reason for failure of high voltage equipment is due to its insulation failure. The electrical properties of an insulator are affected by the presence of cavities within the insulating material, in particular with regard to the electric field and potential distributions. In this paper, the electric field and potential dist

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4

Zolotarov, Volodymyr, Stanislav Antonets, Andrii Oboznyi, et al. "Research overload capability power cables medium voltage of XLPE insulation." Bulletin of the National Technical University "KhPI". Series: Energy: Reliability and Energy Efficiency, no. 2 (3) (December 30, 2021): 84–92. http://dx.doi.org/10.20998/2224-0349.2021.02.15.

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Анотація:

The modern normative approach to determining the load capacity of power cables with cross-linked polyethylene insulation is considered and the application of the model of determining the allowable current loads of a specific medium voltage cable with cross-linked polyethylene insulation to study its overload capacity in production conditions. Power cables with cross-linked polyethylene insulation have clear advantages over traditional oil-filled ones, which has led to their widespread use in all developed countries and a significant reduction in the use of other types of cable. The relevance o

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5

Li, Jin Mei, Jia Qing Zhang, Qiang Li, and Zi Dong Guo. "Thermal Aging Effects on Fire Performance of the Cross-Linked Polyethylene Insulated Cable." Materials Science Forum 898 (June 2017): 2399–404. http://dx.doi.org/10.4028/www.scientific.net/msf.898.2399.

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Анотація:

To evaluate the fire performance of the cable in service, the ignition time, heat release rate and insulation failure parameters of the accelerated thermal aging cable on stimulated fire condition were studied. The results show that, the extended ignition time and decreasing peak of heat release rate of the cable in the early stage of aging are the addictive including the lubricant, plasticizer and anti-oxygen. In the aggravating of thermal aging, labile materials with low heating value will be exhausted, while the thermal stability of insulation sheath material decreases, its corresponding ig

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6

Khouildi, Emna, Rabah Attia, and Rafik Cherni. "Investigating Thermal Effect on a Cross Linked Polyethylene Power Cable." Indonesian Journal of Electrical Engineering and Computer Science 5, no. 1 (2017): 33. http://dx.doi.org/10.11591/ijeecs.v5.i1.pp33-40.

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<p>One of the agents responsible of the degradation of power cables in electrical distribution network is the temperature. In this paper, numerical modelling of temperature effect on the cross linked polyethylene (XLPE) insulation of a medium voltage cable containing internal defects, which are air void cavity and water tree cavities, is developed by using the finite element method and simulated by COMSOL Multiphysics Software. The experimental investigation is conducted through studying parial discharge inception voltages in XLPE insulation before and after 23 heating cycles of a 7 mete

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7

Xi, Rui, Jiaxun He, Ya Zhang, et al. "Effect of Interfacial Protrusion Defects on the Electrical Strength of Cross-linked Polyethylene." Journal of Physics: Conference Series 2956, no. 1 (2025): 012007. https://doi.org/10.1088/1742-6596/2956/1/012007.

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Abstract Interfacial protrusion defects between the insulation layer and the semiconducting shield of cross-linked polyethylene cables can distort the electric field in nearby areas, posing risks to the safe and reliable operation of the cables. This study prepared specimens with various forms of interfacial protrusions under laboratory conditions using two types of insulating materials, including cross-linked polyethylene (XLPE) for medium-voltage and for high-voltage. The effects of these protrusion defects on the electrical strength and life index of XLPEs were evaluated through breakdown t

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8

Kucheriava, I. M. "ELECTRIC FIELD IN CROSS-LINKED POLYETHYLENE CABLE INSULATION WITH ECCENTRICITY AND SEMICONDUCTOR SCREEN DEFECT." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2024, no. 69 (2024): 65–71. https://doi.org/10.15407/publishing2024.69.065.

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Анотація:

The study of two-dimensional electric field in cross-linked polyethylene (XLPE) insulation with eccentricity and a protrusion of the insulation into the internal semiconducting screen of high-voltage cable is carried out by computer modeling. The non-uniformity of the distribution and the regularities of the change in the level of the electric field depending on the considered defects are analyzed. The dependence of the maximum electric field strength on insulation concentricity (within the range of 0–0.5) is presented. The need to prevent the eccentricity of the XLPE insulation system and its

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9

Bulsari, Abhay, and Markku Talja. "Nonlinear Models Speed Development of Cross-Linked Polyethylene Foam." AM&P Technical Articles 176, no. 7 (2018): 21–25. http://dx.doi.org/10.31399/asm.amp.2018-07.p021.

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Abstract Cross-linked low density polyethylene (LDPE) foams are used for applications such as packaging and thermal insulation. Relating composition, process, and dimensional variables with materials properties using nonlinear modeling provides a valuable tool for efficient LDPE materials and product development.

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10

Huang, Ping, Wenyao Yu, Chunhao Lu, et al. "Quantitative Evaluation of Thermal Ageing State of Cross-Linked Polyethylene Insulation Based on Polarization and Depolarization Current." Polymers 15, no. 5 (2023): 1272. http://dx.doi.org/10.3390/polym15051272.

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Анотація:

The widespread use of cross-linked polyethylene (XLPE) as insulation in cables may be attributed to its outstanding mechanical and dielectric properties. In order to quantitatively evaluate the insulation status of XLPE after thermal ageing, an accelerated thermal ageing experimental platform is established. Polarization and depolarization current (PDC) as well as elongation at break of XLPE insulation under different ageing durations are measured. XLPE insulation state is determined by the elongation at break retention rate (ER%). Based on the extended Debye model, the paper proposed the stab

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11

Yahyaoui, Hanen, Jerome Castellon, Serge Agnel, et al. "Behavior of XLPE for HVDC Cables under Thermo-Electrical Stress: Experimental Study and Ageing Kinetics Proposal." Energies 14, no. 21 (2021): 7344. http://dx.doi.org/10.3390/en14217344.

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Анотація:

The present work deals with the study of the electrical behavior of cross-linked polyethylene (XLPE) used for HVDC cable insulation. The aim is to better understand the influences of electrical and thermal stresses on the insulating material in order to provide useful information for designing HVDC cables. This study was carried out on Rogowski samples made of XLPE insulation with semiconductive electrodes, aged for more than 3 years (1220 days) at three different temperatures (70, 80 and 90 °C) under two DC electric fields (30 and 60 kV/mm). Dielectric loss factor, volume resistivity and spac

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12

Jia, Yizhuo, Pengrui Man, Xinyao Guo, Liang Deng, and Yang Li. "Effects of Overload on Thermal Decomposition Kinetics of Cross-Linked Polyethylene Copper Wires." Polymers 15, no. 19 (2023): 3954. http://dx.doi.org/10.3390/polym15193954.

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During an overload fault in an energized wire, the hot metal core modifies the structure of the insulation material. Therefore, understanding the thermal decomposition kinetics of the insulation materials of the overloaded wire is essential for fire prevention and control. This study investigates the thermal decomposition process of new and overloaded cross-linked polyethylene (XLPE) copper wires using thermogravimetry–Fourier-transform infrared spectroscopy and cone calorimetry. The thermal decomposition onset temperature and activation energy of the overloaded XLPE insulation materials were

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13

Du, Yang, Hui Zhang, Wei Han, et al. "The Network Construction of a New Byproduct-Free XLPE-Based Insulation Using a Click Chemistry-Type Reaction and a Theoretical Study of the Reaction Mechanism." Polymers 16, no. 24 (2024): 3536. https://doi.org/10.3390/polym16243536.

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Анотація:

Cross-linked polyethylene (XLPE) is applied in most advanced high-voltage direct-current (HVDC) power cable insulations, which are produced via dicumyl peroxide (DCP) technology. The electrical conductivity of insulation material can be increased by cross-linking byproducts from the DCP process. Hence, currently much attention is being paid to a new process to produce cross-linking byproduct-free XLPE. The cross-linking in situ between ethylene–glycidyl methacrylate copolymer and 1,5-disubtituted pentane via reactive compounding is a substitute for DCP. The reaction potential energy informatio

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14

Zhang, Wei, Zhi Wei Huang, Rong Xue, Long Zhang, Hong Jie Li, and Chong Xin Liu. "Characteristics of Partial Discharge in Cross-Linked Polyethylene Insulation Cable under Damped AC Voltage." Applied Mechanics and Materials 494-495 (February 2014): 1444–47. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.1444.

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Partial discharge (PD) diagnosis techniques are widely used in the insulation condition monitoring for power cables. In this paper, the damped AC (DAC) voltage method was used to study the PD characteristics in the heat-shrinkable cable accessories. Four different cases of artificial defects in cross-linked polyethylene (XLPE) cables were investigated, and these defects include termination without stress tube, incorrect use of insulation tape as the semi-conductive adhesive tape in the middle joint, void and metal particles on the surface of XLPE insulation. Furthermore, the PD inception volta

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15

Olasz, L., and P. Gudmundson. "Prediction of residual stresses in cross-linked polyethylene cable insulation." Polymer Engineering & Science 45, no. 8 (2005): 1132–39. http://dx.doi.org/10.1002/pen.20376.

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16

Ramani, A. N., A. M. Ariffin, Gobinath Vijian, and Ahmad Basri Abd Ghani. "The Effects of Nano Fillers on Space Charge Distribution in Cross-Linked Polyethylene." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 6 (2017): 3147. http://dx.doi.org/10.11591/ijece.v7i6.pp3147-3152.

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The performance of polymeric insulation will be distorted by the accumulation of space charge. This will lead to local electric field enhancement within the insulation material that can cause degradation and electrical breakdown. The introduction of nanofillers in the insulation material is expected to reduce the space charge effect. However, there is a need to analyze potential nanofillers to determine the best option. Therefore, the objective of this research work is to examine two types of nanofillers for Cross-Linked Polyethylene (XLPE); Zinc Oxide (ZnO) and Acrylic (PA40). The effects of

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17

A., N. Ramani, M. Ariffin A., Vijian Gobinath, and Basri Abd Ghani Ahmad. "The Effects of Nano Fillers on Space Charge Distribution in Cross-Linked Polyethylene." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 6 (2017): 3147–52. https://doi.org/10.11591/ijece.v7i6.pp3147-3152.

Повний текст джерела

Анотація:

The performance of polymeric insulation will be distorted by the accumulation of space charge. This will lead to local electric field enhancement within the insulation material that can cause degradation and electrical breakdown. The introduction of nanofillers in the insulation material is expected to reduce the space charge effect. However, there is a need to analyze potential nanofillers to determine the best option. Therefore, the objective of this research work is to examine two types of nanofillers for Cross-Linked Polyethylene (XLPE); Zinc Oxide (ZnO) and Acrylic (PA40). The effects of

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18

Florkowski, Marek. "Comparison of Effects of Partial Discharge Echo in Various High-Voltage Insulation Systems." Energies 17, no. 20 (2024): 5114. http://dx.doi.org/10.3390/en17205114.

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Анотація:

In this article, an extension of a conventional partial discharge (PD) approach called partial discharge echo (PDE), which is applied to different classes of electrical insulation systems of power devices, is presented. Currently, high-voltage (HV) electrical insulation is attributed not only to transmission and distribution grids but also to the industrial environment and emerging segments such as transportation electrification, i.e., electric vehicles, more-electric aircraft, and propulsion in maritime vehicles. This novel PDE methodology extends the conventional and established PD-based ass

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19

Abdul Bahari, Nur Syazwani Binti, Kuan Tze Mei, and Azrul Bin Mohd Ariffin. "A review: partial discharge in medium voltage cross-linked polyethylene XLPE cable." IOP Conference Series: Earth and Environmental Science 1281, no. 1 (2023): 012051. http://dx.doi.org/10.1088/1755-1315/1281/1/012051.

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Анотація:

Abstract Power cables are one of the equipment that plays a vital role in the power system network, either in High Voltage (HV) or Medium Voltage (MV) network. To ensure a reliable power supply and distribution, the integrity and the condition of the cable system must be ensured. Partial Discharge (PD) diagnosis is a valuable tool to analyse and evaluate the condition of the insulation. The purpose of this paper is to review how PD activity is being utilized to assess the condition of the XLPE (cross-linked polyethylene) cables specifically in MV level where a review of existing PD test method

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20

Li, Chang Ming, Guang Xiang Zhang, Chun Yang Li, and Bao Zhong Han. "Inhibition of Electrical Tree Initiation inside High-Voltage Cross-Linked Polyethylene Cable with Nonlinear Shielding Layer." Advanced Materials Research 873 (December 2013): 406–10. http://dx.doi.org/10.4028/www.scientific.net/amr.873.406.

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Анотація:

Electrical tree aging is one of the leading factors causing degradation and breakdown of insulation performance of high-voltage cross-linked polyethylene (XLPE) cable. A lot of attention has been paid to inhibiting electric tree initiation and propagation inside high-voltage cable. In this study, insulation composites with nonlinear electrical conductivity are prepared. Experimental results show that these composites are helpful for enhancing the apparent breakdown electric field strength of XLPE in the pole electrode system. A kind of high-voltage XLPE insulated cable with new structure is de

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21

Ter-Zakaryan, Karapet, Armen Grigoryan, Andrey Medvedev, Boris Efimov, and Aleksey Poserenin. "Snow insulation and conservation systems." E3S Web of Conferences 138 (2019): 01038. http://dx.doi.org/10.1051/e3sconf/201913801038.

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Анотація:

Various aspects of application of polyethylene foam implemented for roof thermal insulation within the frame of one of the sports venues and, closely, the realization of insulation systems for cold conservation on the territory of public sports facilities, particularly for snow storage conservation within ski resorts have been regarded in this article. Additional demands are placed on thermal insulating material for suchlike constructions. Apart from high thermo technical properties, the material should involve hermeticity, lightness, easy mounting and maintenance, durability, bacterial and fu

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22

Li, Zhi Wei, Ze Hua Pan, Cheng Lei Li, et al. "Research on Water Content and Physicochemical Properties of Insulating Materials for Water-Soaked XLPE Cable." Materials Science Forum 922 (May 2018): 192–97. http://dx.doi.org/10.4028/www.scientific.net/msf.922.192.

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The buried environment of cross-linked polyethylene (XPLE) cable is relatively severe, and some ones are even immersed in water directly. In this paper, an XLPE cable was soaked in foul water to simulate the cable’s actual water area environment, lasting for three years. The water content in the insulation layers of water-soaked cable was measured by infrared spectrometer and moisture analyzer, and the crystal morphology and physicochemical properties of the insulation layers were investigated by differential Scanning Calorimeter (DSC), scanning electron microscopy (SEM) and tensile testing te

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23

Nazatul, Shiema Moh Nazar, Syazwani Mansor Noor, Khayam Umar, et al. "Effect of silica nanofiller in cross-linked polyethylene as electrical tree growth inhibitor." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 3 (2022): 2256–63. https://doi.org/10.11591/ijece.v12i3.pp2256-2263.

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Анотація:

One of the main phenomena that contributes to the non-success of cable insulation made of cross-linked polyethylene (XLPE) is electrical treeing. To improve the XPLE cable insulation, the use of nanofiller has been introduced. Adding the nanofiller in the based composite offers better cable lifetime and resistance to deal with the cable failure. One of the potential nanofillers that can increase the insulation performance of XLPE cable is silica nanofiller. To this extent, the studies on silica nanofiller in XLPE are focusing on the impulse breakdown strength, dielectric loss, permittivity, sp

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24

Resner, Leszek, Pawel Lesiak, Iman Taraghi, et al. "Polymer Hybrid Nanocomposites Based on Homo and Copolymer Xlpe Containing Mineral Nanofillers with Improved Functional Properties Intended for Insulation of Submarine Cables." Polymers 14, no. 17 (2022): 3444. http://dx.doi.org/10.3390/polym14173444.

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Анотація:

Cross-linked polyethylene (XLPE) is one of the most popular insulation materials used in the production of medium and high voltage cables (MV, HV). This article presents the results of research carried out on two types of commercially used insulation materials, modified with the addition of organophilic phyllosilicate (CLOISITE C20A)and halloysite nanotubes (HNTs). The influence of fillers on the mechanical properties of insulating materials is discussed as a potential mechanism for increasing their resistance to the phenomenon of water-tree. SEM and XRD analyses were performed to investigate

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25

Kucheriava, I. M. "MONITORING SYSTEMS FOR MODERN POWER CABLE LINES." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2023, no. 66 (2023): 111–23. http://dx.doi.org/10.15407/publishing2023.66.111.

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Анотація:

The overview of fiber-optic technologies for real-time monitoring of the technical condition and operational characteristics of modern power cables with cross-linked polyethylene insulation and with the fiber-optic module integrated into their structure is presented. In particular, the new intelligent means for monitoring of the temperature, load current, deformation (mechanical damages), partial discharges in the insulation, moisture penetration inside the cables and control over sheath voltage limitation are described. The topicality of using and developing the technologies of smart diagnost

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26

Moh Nazar, Nazatul Shiema, Noor Syazwani Mansor, Umar Khayam, et al. "Effect of silica nanofiller in cross-linked polyethylene as electrical tree growth inhibitor." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 3 (2022): 2256. http://dx.doi.org/10.11591/ijece.v12i3.pp2256-2263.

Повний текст джерела

Анотація:

One of the main phenomena that contributes to the non-success of cable insulation made of cross-linked polyethylene (XLPE) is electrical treeing. To improve the XPLE cable insulation, the use of nanofiller has been introduced. Adding the nanofiller in the based composite offers better cable lifetime and resistance to deal with the cable failure. One of the potential nanofillers that can increase the insulation performance of XLPE cable is silica nanofiller. To this extent, the studies on silica nanofiller in XLPE are focusing on the impulse breakdown strength, dielectric loss, permittivity, sp

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27

Diban, Bassel, and Giovanni Mazzanti. "The Effect of Insulation Characteristics on Thermal Instability in HVDC Extruded Cables." Energies 14, no. 3 (2021): 550. http://dx.doi.org/10.3390/en14030550.

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Анотація:

This paper aims at studying the effect of cable characteristics on the thermal instability of 320 kV and 500 kV Cross-Linked Polyethylene XLPE-insulated high voltage direct-current (HVDC) cables buried in soil for different values of the applied voltages, by the means of sensitivity analysis of the insulation losses to the electrical conductivity coefficients of temperature and electric field, a and b. It also finds the value of dielectric loss coefficient βd for DC cables, which allows an analytical calculation of the temperature rise as a function of insulation losses and thermal resistances

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28

Ding, Man, Weifeng He, Jiahe Wang, and Jinpeng Wang. "Performance Evaluation of Cross-Linked Polyethylene Insulation of Operating 110 kV Power Cables." Polymers 14, no. 11 (2022): 2282. http://dx.doi.org/10.3390/polym14112282.

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Анотація:

The ageing characteristic of XLPE insulation of operating a 110 kV power cable with different service time is studied in this paper. The microscopic morphology of XLPE films from different cables were characterized by using Differential Scanning Calorimetry (DSC), X-ray Diffraction method (XRD), and Fourier Transform Infrared Spectroscopy (FTIR) methods, and the dielectric, mechanical, and electrical properties of XLPE were also measured. The relationship of several typical property parameters with the cable service time were established, and the ageing mechanism of XLPE insulation of the oper

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29

Qian, Haoran, Zhiqi Li, and Song He. "Cross-Linked Polyimide Aerogels with Excellent Thermal and Mechanical Properties." Gels 10, no. 10 (2024): 667. http://dx.doi.org/10.3390/gels10100667.

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Анотація:

With the increasing development of productivity, new materials that allow for the efficient use of energy are slowly becoming a sought-after goal, as well as a challenge that is currently being faced. For this reason, we have made aerogels as the target of our research and prepared different series (CLPI (1–5)) of cross-linked polyimide aerogels by mixing and cross-linking the heat-insulating cross-linking agent 1,3,5-tris(4-aminobenzylamino)benzene (TAB) with polyamic acid solution. We created a three-dimensional spatial organization by using vacuum freeze-drying and programmed high-temperatu

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30

Chang, Yuan-Shang, and Ali Mosleh. "Reliability of cable insulation under reaction- and diffusion-controlled thermal degradation." Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability 233, no. 4 (2018): 639–47. http://dx.doi.org/10.1177/1748006x18812212.

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Анотація:

Cables transmit signals and power in nuclear power plants. The primary material for the cable insulation is cross-linked polyethylene, which inevitably degrades due to thermal stress. The degradation can become a safety issue, since the brittleness of degraded cross-linked polyethylene may render the exposure of the metal core in a cable. Elongation at break is a widely accepted measurement, evaluating the degree of the brittleness of the insulation. Reaction- and diffusion-controlled kinetics are proposed in this article to quantitatively predict the decrease of the elongation at break as a f

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31

Sherif, Essawi, Nasrat Loai, Ismail Hanafy, and Asaad Jeannette. "Improvement of dielectric strength and properties of cross-linked polyethylene using nano filler." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 3 (2022): 2264–72. https://doi.org/10.11591/ijece.v12i3.pp2264-2272.

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Анотація:

Power cables insulated with cross-linked polyethylene (XLPE) have been utilized worldwide for distribution and transmission networks. There are several advantages for this type of insulation; it has better electrical, thermal, and mechanical properties compared to other types of insulation in medium and high voltage networks. Many studies aimed to improve the XLPE characteristics through introducing nano fillers to the XLPE matrix. Therefore, this paper investigates the AC (HV) breakdown voltage (dielectric strength) of XLPE after adding nano-sized zeolite (Z) fillers with various concentratio

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32

Rizani, Nur Alia, Norazrina Mat Jali, Nor Azwin Shukri, Norzaima Nordin, and Sri Rizki Putri Primandari. "Ageing Effects on the Properties of Radiation Cross-Linked PVC Cable." Journal of Advanced Research in Applied Mechanics 137, no. 1 (2025): 122–33. https://doi.org/10.37934/aram.137.1.122133.

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In this study, the impact of ageing on radiation cross-linked PVC cables, using electron beam irradiation within 0-100kGy radiation doses was investigated. Accelerated thermal ageing was performed in a vacuum oven to simulate real-time ageing and shelf life. Tensile test was then conducted using Universal Instron machine to evaluate the ultimate tensile strength (UTS) while electrical conductivity tests using impedance analyser was carried out to assess the insulation properties of the radiation crosslinked PVC. Results indicated that higher radiation doses generally increased UTS values, enha

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Li, Guowei, Siming Zeng, Qing Wang, and Zhenwei Zhang. "Distribution network cable detection based on terahertz pulse and imaging." Дефектоскопия, no. 3 (July 19, 2024): 47–55. http://dx.doi.org/10.31857/s0130308224020046.

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Moisture of high voltage distribution network cables will cause major safety hazard, but there is no effective means to detect and analyze the internal humidity state of the cables. Therefore, it is urgent to develop a new non-destructive detection method to evaluate the waterproof performance of distribution network cables and their connectors. The internal structure of the cable is a multi-layer structure composed of wires, cross-linked polyethylene insulation layer, and silicone rubber insulation sheath. We used the reflective terahertz pulse signal to detect the internal states of the cabl

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LARBA, Mohamed, and Abdallah MEDJDOUB. "Electric Field Effect on the Dielectric Properties of Insulating Materials Destined for Medium Voltage Cable Insulation." Electrotehnica, Electronica, Automatica 73, no. 1 (2025): 62–69. https://doi.org/10.46904/eea.25.73.1.1108006.

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The predominant use of cross-linked polyethylene (XLPE) in the insulation of medium and high voltage cables is attributed to its excellent electrical, thermal and mechanical properties. However, this insulation can undergo crucial damage under various constraints, including electrical stress. The main objective of this work is to analyze the influence of electrical aging on the dielectric characteristics, such as the relative permittivity, the dielectric loss factor and the loss index of the XLPE. Furthermore, an optical scanning electron microscope (SEM) is studied to visualize the surface co

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Grigoryan, Artak A., Karapet A. Ter-Zakaryan, Alexander I. Panchenko, Nadezhda A. Galceva, and Vladislav I. Krashchenko. "Heat- and cooling systems." Stroitel stvo nauka i obrazovanie [Construction Science and Education], no. 4 (December 31, 2019): 7. http://dx.doi.org/10.22227/2305-5502.2019.4.7.

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Introduction. The article discusses the various aspects of the use of foamed polyethylene, implemented at sports facilities in Armenia. Firstly, it is a roof insulation system. Secondly, the implementation of insulation systems to preserve the cold in the territory of open sports facilities, in particular, to preserve snow reserves in ski resorts. Additional requirements are imposed on the thermal insulation material for such structures. The material, in addition to high thermotechnical properties, must be airtight, lightweight, easy to install and maintain, durable, resistant to infection by

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Kucheriava, I. M. "UP-TO-DATE EXTRA-HIGH-VOLTAGE CABLES WITH CROSS-LINKED POLYETHYLENE INSULATION (FEATURES AND DEVELOPMENT TRENDS)." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2025, no. 70 (2025): 42–50. https://doi.org/10.15407/publishing2025.70.042.

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Анотація:

The paper presents and analyzes the basic advantages and trends in the development and application of extra-high-voltage cables with cross-linked polyethylene insulation. Due to their ability to support the integration with renewable energy sources and fiber-optic technologies, increase the network efficiency, reduce the transmission losses, as well as owing to the achievements and new technologies in designs and improvements in insulation materials, these cables play a significant role in the development of the world's energy industry and the creation of future energy infrastructure. Ref. 31,

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Zhu, Zhao, Han, et al. "Thermal Effect of Different Laying Modes on Cross-Linked Polyethylene (XLPE) Insulation and a New Estimation on Cable Ampacity." Energies 12, no. 15 (2019): 2994. http://dx.doi.org/10.3390/en12152994.

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This paper verifies the fluctuation on thermal parameters and ampacity of the high-voltage cross-linked polyethylene (XLPE) cables with different insulation conditions and describes the results of a thermal aging experiment on the XLPE insulation with different operating years in different laying modes guided by Comsol Multiphysics modeling software. The thermal parameters of the cables applied on the models are detected by thermal parameter detection control platform and differential scanning calorimetry (DSC) measurement to assure the effectivity of the simulation. Several diagnostic measure

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Back, In Jae, Su Cheol Gong, Hun Seoung Lim, et al. "Field Effect Transistor with ZnS Active Layer on ITO/Glass Substrate." Materials Science Forum 544-545 (May 2007): 753–56. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.753.

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The organic-inorganic field effect transistors (OIFETs) with ZnS active layer were fabricated on the ITO/glass substrate using cross-linked PVP (poly-4-vinylphenol) as a gate insulator. ZnS semiconductor films were prepared by the atomic layer deposition method. In the case of cross-linked PVP film, the leakage current and capacitance were about 1× 10-8 A and 12 nF/cm2, showing good gate insulation property. The carrier concentration and mobility of ZnS film deposited on SiO2/Si wafer was found to be -9.4×1015 cm-3 and 49.0 cm2/ V·sec, respectively. For the OIFET devices with ITO/PVP/ZnS/Ti:Au

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Shcherba, A. А., М. А. Shcherba, and Ju V. Peretyatko. "ELECTRO-PHYSICAL PROCESSES OF DEGRADATION OF CROSS-LINKED POLYETHYLENE INSULATION OF POWER CABLES AND SELF-CARRYING INSULATED WIRES UNDER NON-SINUSOIDAL VOLTAGES AND CURRENTS." Tekhnichna Elektrodynamika 2023, no. 1 (2023): 3–6. http://dx.doi.org/10.15407/techned2023.01.003.

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The features of electro-physical processes of degradation of cross-linked polyethylene (XLPE) insulation of power cables and self-carrying insulated wires (SIW) are studied, taking into account water microinclusions and dendrite branches that appear in such insulation during manufacture and operation. It is substantiated that the appearance of non-sinusoidal voltages and cur-rents in power transmission lines (TL) using modern power cables and SIW with solid XLPE insulation causes an increase in electro-physical factors aimed at increasing the pulsating electromechanical pressure on the surface

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Shcherba, A. A., O. D. Podoltsev, and I. M. Kucheriava. "ELECTRIC FIELD OF SEMICONDUCTING SCREEN IN POWER CABLE WITH POLYMER INSULATION TAKING INTO ACCOUNT STRUCTURAL INHOMOGENEITIES." Tekhnichna Elektrodynamika 2024, no. 5 (2024): 3–11. http://dx.doi.org/10.15407/techned2024.05.003.

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The non-homogeneous electric field distributions in the cross-linked polyethylene insulation of 330 kV power cable with multi-conductor core depending on the electrical conductivity and thickness of the semiconducting screen as well as at different frequency of applied voltage (from 50 to 104 Hz) are studied by finite-element analysis. As shown, taking into account the periodic structure of core surface, the electrical conductivity of the material of internal semiconducting screen should exceed 10–6 S/m and its thickness should be at least 1.5 mm in order to obtain the uniform electric field i

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Wan, Qingzhu, and Xianjuan Min. "ANSYS Simulation-based analysis of cable insulation faults." Journal of Physics: Conference Series 2835, no. 1 (2024): 012056. http://dx.doi.org/10.1088/1742-6596/2835/1/012056.

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Abstract Insulation degradation of cables is the core factor of its shortened life, and the current operation and inspection departments are unable to effectively analyse cable insulation defects from multiple perspectives. To address this problem, ANSYS simulation was used to extract the characterization of cable insulation faults. Firstly, the fundamentals of defective insulation in cables were introduced. Then, a finite element model of a 10kV Cross-Linked Polyethylene (XLPE) cable was established by using ANSYS simulation software. Finally, simulations and analyses of bubbles, bulges, and

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Ďurman, Vladimír, and Jaroslav Lelák. "Influence of Radiation on the Dielectric Properties of XLPE Based Insulation Systems." Journal of Electrical Engineering 61, no. 4 (2010): 229–34. http://dx.doi.org/10.2478/v10187-010-0032-5.

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Influence of Radiation on the Dielectric Properties of XLPE Based Insulation SystemsThe paper discusses the possibilities of acquiring and processing the dielectric data in the range of very low frequency (VLF) and also design and construction of an impedance analyzer for measurements in this frequency range. The impedance measurements in the VLF range were used for investigation of the influence of radiation on the cross-linked polyethylene cable dielectric. An expressive β-type relaxation process was found in this type of cable. Most of the dielectric response parameters of the process depen

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Jarvid, Markus, Anette Johansson, Villgot Englund, et al. "High electron affinity: a guiding criterion for voltage stabilizer design." Journal of Materials Chemistry A 3, no. 14 (2015): 7273–86. http://dx.doi.org/10.1039/c4ta04956j.

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A high electron affinity is found to correlate with the ability of voltage-stabilizer additives to improve the dielectric strength of cross-linked polyethylene, which is a highly desirable for high-voltage insulation materials.

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44

Zhang, Hui, Yan Shang, Mingxia Li, Hong Zhao, Xuan Wang, and Baozhong Han. "Theoretical study on the radical reaction mechanism in the cross-linking process of polyethylene." RSC Advances 5, no. 110 (2015): 90343–53. http://dx.doi.org/10.1039/c5ra16339k.

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The mechanism of the valerophenone voltage stabilizer for increasing the electrical breakdown strength of cross-linked polyethylene is expected to provide reliable information to prepare insulation material for high voltage cables up to 500 kV.

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Essawi, Sherif, Loai Nasrat, Hanafy Ismail, and Jeannette Asaad. "Improvement of dielectric strength and properties of cross-linked polyethylene using nano filler." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 3 (2022): 2264. http://dx.doi.org/10.11591/ijece.v12i3.pp2264-2272.

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Анотація:

Power cables insulated with cross-linked polyethylene (XLPE) have been utilized worldwide for distribution and transmission networks. There are several advantages for this type of insulation; it has better electrical, thermal, and mechanical properties compared to other types of insulation in medium and high voltage networks. Many studies aimed to improve the XLPE characteristics through introducing nano fillers to the XLPE matrix. Therefore, this paper investigates the AC (HV) breakdown voltage (dielectric strength) of XLPE after adding nano-sized zeolite (Z) fillers with various concentratio

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Chen, Xiangrong, Zelin Hong, Chao Dai, et al. "Voltage stabilizer and nanofiller in enhancement of insulation properties of cross‐linked polyethylene." Journal of Applied Polymer Science 139, no. 23 (2022): 52314. http://dx.doi.org/10.1002/app.52314.

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Zhang, Yuanyuan, Zongke Hou, Kangning Wu, Shihang Wang, Jianying Li, and Shengtao Li. "Influence of Oxygen Diffusion on Thermal Ageing of Cross-Linked Polyethylene Cable Insulation." Materials 13, no. 9 (2020): 2056. http://dx.doi.org/10.3390/ma13092056.

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Thermal ageing of cross-linked polyethylene (XLPE) cable insulation is an important issue threatening the safe operation of power cables. In this paper, thermal ageing of XLPE was carried out at 160 °C in air for 240 h. The influence of oxygen diffusion on thermal ageing of XLPE was investigated by Ultraviolet–visible spectrophotometer (UV–Vis), tensile testing, and Fourier transformed infrared spectroscopy (FTIR). It was observed that the degradation degree not only depended on ageing time but also on sample positions. The thermally aged samples were more oxidized in the surface region, prese

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Kim, Chonung, Pingkai Jiang, Fei Liu, et al. "Investigation on dielectric breakdown behavior of thermally aged cross-linked polyethylene cable insulation." Polymer Testing 80 (December 2019): 106045. http://dx.doi.org/10.1016/j.polymertesting.2019.106045.

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Chen Xiang-Rong, Xu Yang, Liu Ying, and Cao Xiao-Long. "Study on conducting characteristics of electrical trees in cross-linked polyethylene cable insulation." Acta Physica Sinica 61, no. 8 (2012): 087701. http://dx.doi.org/10.7498/aps.61.087701.

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Cheng, Zhi Wan, Hong Yu, Tao Dong, and Xian Ping Zhao. "Combined Diagnosis Study for Terminal Main Insulation Hole Defect in 10kV Cross-Linked Polyethylene Cable." Advanced Materials Research 681 (April 2013): 38–43. http://dx.doi.org/10.4028/www.scientific.net/amr.681.38.

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In order to study the main insulation of cable terminal hole defect, using visual detection, infrared imaging spectrometer, ultraviolet imaging instrument and pulse current method for the defects of various means such as joint detection. The experimental results show that several ways in which judge cable terminal hole defects that is feasibility, reliability and validity.

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