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Journal articles on the topic 'Insulation characteristic'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Wang, Zhi Hui, Lin Gou, and Xin Ming Wang. "Partial Discharge Characteristics of GIS." Applied Mechanics and Materials 513-517 (February 2014): 3532–35. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.3532.

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Gas insulated switchgears (GIS) occupy an important position in the power system. Insulating spacers surface discharge is an important factor to the safe operation of GIS. The authors set up different insulation defect models in insulator surface and use the UV camera to observe the surface discharge phenomena, we have obtained the following conclusions: (1) the photon numbers increase with increasing length of the models, however, there are many repetitive experiments show that it has saturation characteristic ;(2) When the same kind of simulation insulation fault in different position, the i

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2

Xia, Rong. "Characteristic Analysis and Measurement of Dielectric Loss in Non-Linear Insulating Materials." Advanced Materials Research 986-987 (July 2014): 1471–76. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1471.

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Non-linear insulating material is widely used in the insulations of XLPE cable terminations and stator windings insulation of electric machines, and has obvious capability to improve the distribution of electric field. Actually, the dielectric loss factor of non-linear insulating materials is not equal to the tanδ describing linear insulating materials, and depends on applied voltage and their structures. This paper firstly discusses the difference between ac loss characteristic of non-linear dielectrics and linear dielectrics and presents a kind model of non-linear composite material. Based o

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3

Yamamoto, Osamu. "EXPERIENCES IN NUMERICAL ANALYSES OF SURFACE CHARGE ON INSULATORS EXPOSED TO HIGH VOLTAGE IN VACUUM." ASEAN Engineering Journal 5, no. 1 (2015): 9–21. http://dx.doi.org/10.11113/aej.v5.15452.

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This paper deals with the electrical insulation of a gap bridged by a solid dielectric between a pair of electrodes in a vacuum, where the dielectric is a model of an insulating spacer holding electrodes in various vacuum devices. Such gap configuration is typical as a model for studying physical mechanisms of an electrical breakdown or a flashover in a vacuum, in which the insulation ability is considerably lower than a gap without any insulating spacers. Many researchers have long investigated the mechanisms of flashover, and it is believed that the charging of the insulator surface is the p

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Kersh, Volodimir, Andriy Kolesnikov, Mikola Hlitsov, and Sergіi Gedulyan. "Thermal and Acoustic Insulating Gypsum Composite Material with Improved Water Resistance." Tehnički glasnik 14, no. 2 (2020): 89–93. http://dx.doi.org/10.31803/tg-20181024091245.

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The article discusses methods for obtaining building heat and sound insulating composite material based on gypsum with high resistance to water. An additional characteristic is considered - the water resistance index, in which the role of material strength in the wet state is enhanced. The proposed characteristic is used to optimize the heat and sound insulating composition based on gypsum. The material contains matrix gypsum-cement-ash binder and a mixture of aggregates. The result of the planned experiment shows that the water resistance index more adequately reflects the strength of the com

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Nugroho, Setyo Adi, and Setyo Aji Priambodo. "Breakdown Voltage Characteristic Of Mineral Oil In Power Transformer 16 Mva Updl Semarang." Techno (Jurnal Fakultas Teknik, Universitas Muhammadiyah Purwokerto) 21, no. 2 (2020): 119. http://dx.doi.org/10.30595/techno.v21i2.7957.

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The transformer is one of the most important equipment in the electric power system, which is to distribute power from power plants to the load centers by step-up or step down the voltage. Transformer is expect to have a high level of reliability. One of the causes of damage to the power transformer is its insulation system. Mineral oil is an insulator that is widely used in power transformers. One of the important parameters in oil type insulation is the breakdown voltage value, the greater breakdown voltage value, as better the insulation quality. In this research, a breakdown voltage test i

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Leonov, A. P., and A. Supueva. "PROVIDING A MINIMUM DEFECTIVENESS OF INTER-TURN INSULATION AT THE MANUFACTURING STAGE AND DURING THE EXPLOITATION." Resource-Efficient Technologies, no. 1 (October 12, 2022): 1–9. http://dx.doi.org/10.18799/24056529/2022/1/320.

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The reliability of a low-voltage asynchronous electric motor is primarily determined by the reliability of the stator winding insulation. Common reasons for the failure of the insulation system are the unsatisfactory quality of the enameled wires and electrical insulating materials used for imperfection and violation of the technological process of winding and insulating work, and the discrepancy between operating modes. In the vast majority of cases, failures occur due to damage to the inter-turn insulation as the weakest element. This causes the need to study the insulation system resistance

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І.N. Babiy, L.V. Kucherenko, Yu.S Sokolan, А.S. Zalogina, and Sławomir Rabczak. "COMPARATIVE CHARACTERISTICS OF MODERN THERMAL INSULATION TECHNOLOGIES OF BUILDINGS." Journal of Civil Engineering, Environment and Architecture 38, no. 68 (2021): 17–25. http://dx.doi.org/10.7862/rb.2021.2a.

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Thermal insulation materials and technologies for thermal insulation of houses were investigated. The widespread use of such materials is due to the saving of fuel and energy resources, in particular, during the operation of buildings and structures. The subject of the analyzed stage of the research is the use of modern thermal insulation materials in construction, comparative characteristics of materials and processes associated with thermal insulation technologies. A list in the form of a table of the most used on the Ukrainian thermal insulation materials with comparative characterist

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Zaripov, D. K., R. A. Nasibullin, D. F. Zakirov, and A. V. Zakharov. "Study of operation of a polymer insulator under uniform and non-uniform contamination." Power engineering: research, equipment, technology 25, no. 5 (2024): 20–29. http://dx.doi.org/10.30724/1998-9903-2023-25-5-20-29.

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RELEVANCE. Suspended insulators, the technical condition of which largely determines the reliability of power supply to consumers of different categories, are one of the most damaged elements of overhead power transmission lines [1-2]. This is primarily due to the fact that during their operation, insulators are exposed to various climatic conditions that have a direct impact on their insulating properties. Moreover, precipitation, such as rain, fog or dew, has the greatest impact precisely in combination with various solid, liquid and gaseous particles deposited on the insulator surface from

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Zhao, Hai Qian, and Zhong Hua Wang. "Study on Novel Thermal Insulation Structure of Thermal Recovery Boiler." Advanced Materials Research 512-515 (May 2012): 1311–14. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1311.

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Based on the existing problem of thermal insulation structure of thermal recovery boiler , a novel thermal insulation structure of thermal recovery boiler is designed. The novel thermal insulation structure was used on a boiler in field test, and its thermal insulation characteristics were tested. According to the test data, thermal conductivities of the novel and the conventional thermal insulation structure were calculated. Contrast analyses indicated that thermal insulation characteristic of the novel thermal insulation structure for thermal recovery boiler was better than that of the conve

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Gao, Wei, and Zhong Tang. "Characteristic Analysis of the Insulation State of Single-Core XLPE Cables." Advanced Materials Research 805-806 (September 2013): 902–5. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.902.

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This paper investigates the state of insulation characteristic of single-core underground cable. The distributed model of single-core cable was built, which involved the insulation resistance and the leakage current. Based on the distributed model, sheath voltage and ground current on metallic sheath was examined under several kinds of insulation ageing such as various degree of insulation ageing occur in the main insulation, or in the sheath insulation, or partial insulation ageing. The results show that the voltage and current on metallic sheath indicate the degree and position of the ageing

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11

W. Ren, L., M. S. Abd Rahman, and A. Mohd Ariffin. "Classification of Partial Discharge Sources using Statistical Approach." Indonesian Journal of Electrical Engineering and Computer Science 6, no. 3 (2017): 537. http://dx.doi.org/10.11591/ijeecs.v6.i3.pp537-543.

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<p>In high-voltage (HV) power equipment, degradation of insulation has been main concern for protection of equipment. This is due to occurrence of partial discharges (PD) activity within HV insulating systems which can be initiated from different types of local internal or external defects. Thus, partial discharge (PD) identification and classification are important for diagnostic insulation systems problems in order to ensure maintenance process can be carried out effectively and hence improve reliability and durable operation of HV equipment. In this work, the relation of the observabl

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12

Huang, Qingdan, Huihong Huang, Jing Liu, Yuqing Chen, and Haoyong Song. "Scaled experimental study on the initial oil thickness effect on the combustion characteristic of the typical transformer insulating oil." Journal of Physics: Conference Series 2614, no. 1 (2023): 012014. http://dx.doi.org/10.1088/1742-6596/2614/1/012014.

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Abstract Compared with mineral oil, plant insulation oil has a higher flash point, excellent natural degradation ability, and higher electrical insulation. It is expected to become the main component of transformer insulation oil, but the fire safety of this oil needs to be further analyzed and improved. In this paper, a cone calorimeter was used to test the combustion of typical plant insulating oil (camellia seed oil, soybean oil) and mineral oil (25# mineral oil) under different radiant heat flows and initial oil thickness. The combustion parameters such as ignition time, heat release rate,

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Diantari, Retno Aita, Rachmawati, Umar Khayam, and Suwarno. "Gum Rosin Characteristics as Alternative Coating Material to Improve High Voltage Outdoor Insulator Performance." Emerging Science Journal 9, no. 3 (2025): 1477–92. https://doi.org/10.28991/esj-2025-09-03-018.

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Numerous attempts have been made to enhance the performance of ceramic insulators, including insulators' design modification, surface coating application, and regular maintenance improvement. Room Temperature Vulcanized (RTV) silicone rubber, frequently employed as a coating for outdoor ceramic insulators, may deteriorate due to continuous exposure to ozone and ultraviolet (UV) light, resulting in a loss of insulating properties and potential surface cracking. This research aims to investigate the characteristics of new materials intended as additional coating materials for high voltage insula

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14

Zhu, Guangya, Shiyu Ma, Shuai Yang, Yue Zhang, Bingyan Wang, and Kai Zhou. "Identification of Dielectric Response Parameters of Pumped Storage Generator-Motor Stator Winding Insulation Based on Sparsity-Enhanced Dynamic Decomposition of Depolarization Current." Energies 18, no. 13 (2025): 3382. https://doi.org/10.3390/en18133382.

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Accurate diagnosis of the insulation condition of stator windings in pumped storage generator-motor units is crucial for ensuring the safe and stable operation of power systems. Time domain dielectric response testing is an effective method for rapidly diagnosing the insulation condition of capacitive devices, such as those in pumped storage generator-motors. To precisely identify the conductivity and relaxation process parameters of the insulating medium and accurately diagnose the insulation condition of the stator windings, this paper proposes a method for identifying the insulation dielect

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15

Crnoja, Andelko, Vladimir Kersh, Oleg Popov, and Alina Dovhulia. "Laboratory Studies of the Heat-Insulating Properties of the Panels that Made of Recycled Rubber." Key Engineering Materials 864 (September 2020): 66–72. http://dx.doi.org/10.4028/www.scientific.net/kem.864.66.

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This study examines the thermal insulation properties of panels made from recycled rubber. The reasons, in addition to the use in construction, are environmental protection, sustainable development, energy conservation. The thermal conductivity coefficient λ is the main characteristic, on the basis of which a decision is made on the choice of material as a heat insulator. Materials with λ <0.2 W / (m · K) are heat-insulating. Tested 3 composition of the material of different particle size distribution. It is shown that the key parameters that determine the heat-shielding properties of a mat

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16

Qian, Yi Hua, Hong Hong Hu, and Zhi Li. "Analysis and Countermeasure of Transformer Faults Caused by Corrosive Sulfur." Applied Mechanics and Materials 71-78 (July 2011): 3958–62. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3958.

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Based on electrical and chemical analysis in oils of some fault transformers in Shenzhen, it indicates that the corrosive sulfur contained in insulating oils may cause faults. Corrosive sulfur would react to copper wire and engender Cu2S during the operation of transformer. Because of the electric characteristic of Cu2S, this substance will penetrate and pollute insulating paper of the wire, and then weaken the insulation intensity. At last it would wear out coil insulation. Experiments indicate that adding passivator to insulating oil is an effective method to solve the problem. Passivator ca

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17

Luo, Chuan, Chuan Li, Xiaorong Wan, and Zhengang Zhao. "Convective Heat Transfer Coefficient of Insulation Paper–Oil Contact Surface of Transformer Vertical Oil Channel." Coatings 13, no. 1 (2023): 81. http://dx.doi.org/10.3390/coatings13010081.

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Insulation paper is the primary inter-turn insulation material for transformer windings. However, insulation paper is a poor conductor of heat and seriously impacts the natural convective heat dissipation in the winding oil channels. In order to study the convective heat transfer performance of the transformer vertical oil channel, the heat transfer characteristics of the two-dimensional boundary layer of the insulation paper–oil contact surface were analysed, and a characteristic number equation with a roughness correction factor was established. Based on the similarity principle and modellin

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18

Zhang, Daning, Wenrui Tian, Xuan Li, et al. "Temperature correction method for dielectric response of high moisture content and aging degree oil impregnated paper based on segmented activation energy." AIP Advances 13, no. 4 (2023): 045212. http://dx.doi.org/10.1063/5.0143717.

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Frequency Domain Spectroscopy (FDS) is widely used to estimate oil–paper insulation. The high moisture and long aging change the FDS characteristics of the insulating oil–paper, so normalization processing is required. Still, the choice of single activation energy needs further research. This paper studies the FDS characteristic of oil–paper insulation samples with different moisture and aging degrees and improves the traditional temperature correction method. The enhanced Arrhenius model uses the segmented activation energy to make the normalized FDS curve coincide better with the target curv

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19

Zach, Jiri, Jitka Peterková, and Martin Sedlmajer. "Hygrothermal Behavior of Thermal Insulating Material Based on Technical Hemp and its Application in Construction." Advanced Materials Research 860-863 (December 2013): 1223–26. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1223.

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Natural insulation materials have great potential of development given the contemporary requirements of the society in terms of reducing the energy demands of the production of building materials and the reduction of CO2emissions. Natural fibers are characteristic by their high moisture absorption and combustibility. The paper describes the results of research in the field of heat and moisture transfer within the structure of insulating materials based on natural fibers (hemp). The results of the experiments provided input data for computational simulations of hygrothermal behavior of hemp bas

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20

Alderucci, Tiziana, Luigi Patrono, Piercosimo Rametta, and Placido Munafo. "The effectiveness of an internet of things-aware smart ventilated insulation system." Thermal Science 22, Suppl. 3 (2018): 909–19. http://dx.doi.org/10.2298/tsci170906024a.

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The considerable thicknesses of common insulation systems, applied to the internal or external building envelope, can be inappropriate in the Mediterranean climates for improving buildings? energy efficiency and their internal comfort at the same time; in fact, the high thicknesses of insulating material provided by legislation standards can be cause of environments? over-heating and formation of condensation. In this framework, the S-MUnSTa system is an innovative dynamic ventilated insulation system able to overcome condensation and overheating phenomena, also exploiting Internet of Things t

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Kušnerová, Milena, Marta Harničárová, Jan Valíček, et al. "Measurement of the Thermal Properties of Innovative Highly-Insulating Non-Structural Concretes." Defect and Diffusion Forum 390 (January 2019): 41–52. http://dx.doi.org/10.4028/www.scientific.net/ddf.390.41.

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Thermal characteristic of insulation concretes is one of the key components in materials selection especially in civil constructions. In this article, non–tabulated material parameters of some innovative highly-insulating non-structural concretes are presented. The specific volumetric heat capacity, specific heat capacity, parameter of temperature diffusivity and thermal mass parameter of the innovative highly-insulating cementitious composites were determined. The experiments were conducted using a prototype automated calorimetric chamber. The measurement results are compared with those obtai

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22

Lian, Xiao, Shengsheng Wang, Maolin Liu, et al. "Study on low frequency sound insulation characteristic of thin acoustic black hole." Modern Physics Letters B 35, no. 12 (2021): 2150198. http://dx.doi.org/10.1142/s0217984921501980.

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We use numerical and experimental methods to investigate the low frequency sound insulation characteristic of designed thin acoustic black hole (ABH). The numerical results show that the sound energy focusing effect plays a leading role in low frequency sound insulation of designed ABH, and the reflection at the edge of ABH is the main reason of sound insulation in medium and high frequencies. Experimental results display that the Sound Transmission Loss (STL) of the designed ABH is higher than 30 dB below 700 Hz, which shows that the isolated acoustic waves are more than 95%. The low frequenc

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Liang, Xiao, Zhuo Zhou, and Jiu Hui Wu. "The experimental study on low frequency sound transmission characteristics of the acoustic black hole." Modern Physics Letters B 33, no. 36 (2019): 1950458. http://dx.doi.org/10.1142/s021798491950458x.

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The acoustic black hole has good sound insulation performance in low frequency range. The transmission and insulation characteristics of acoustic black hole is investigated by experiments. First, we study the transmission and insulation characteristics of the acoustic black hole by numerical simulation. Second, we studied the sound transmission characteristic of multi-level acoustic black hole. Finally, the sound transmission and insulation characteristics of the acoustic black hole are studied by experiments. The influence of the acoustic black hole tip’s diameter on sound insulation coeffici

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Zhang, Zhaoyun, Hefan Chen, and Shihong Huang. "Detection of Missing Insulator Caps Based on Machine Learning and Morphological Detection." Sensors 23, no. 3 (2023): 1557. http://dx.doi.org/10.3390/s23031557.

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Missing insulator caps are the key focus of transmission line inspection work. Insulators with a missing cap will experience decreased insulation and mechanical strength and cause transmission line safety accidents. As missing insulator caps often occur in glass and porcelain insulators, this paper proposes a detection method for missing insulator caps in these materials. First, according to the grayscale and color characteristics of these insulators, similar characteristic regions of the insulators are extracted from inspection images, and candidate boxes are generated based on these characte

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Ji, Ru, Xi Dong Wang, Zuo Tai Zhang, and Li Li Liu. "Performance Test and Research of Ceramic Fiberboard." Applied Mechanics and Materials 488-489 (January 2014): 36–39. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.36.

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Ceramic fiber has great refractory and insulating ability. The coefficient of thermal conductivity is a significant characteristic of the fiber insulation materials, and shows the material thermal capacity. This paper not only research basic properties of ceramic fiberboard, but also focus on the influence factors of the effective thermal conductivity which include bulk density, temperature and moisture content.

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He Jialong, 何佳龙, 彭宇飞 Peng Yufei, 陈思富 Chen Sifu, 王丽萍 Wang Liping, 谷战军 Gu Zhanjun, and 叶毅 Ye Yi. "Characteristic of insulation material under multiple pulses." High Power Laser and Particle Beams 22, no. 4 (2010): 927–30. http://dx.doi.org/10.3788/hplpb20102204.0927.

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Salleh, Nor Izzati Mohd, Nor Akmal Mohd Jamail, Nishanti Suntharasakan, et al. "Analysis of HVDC breakdown characteristic of LLDPEnatural rubber added with biofiller as high voltage insulating material." Indonesian Journal of Electrical Engineering and Computer Science 20, no. 3 (2020): 1203–9. https://doi.org/10.11591/ijeecs.v20.i3.pp1203-1209.

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The influence of solid insulation has been investigated by few researchers. The mechanism of solid breakdown is important in insulation studies. In this research, testing on linear-low density polythylene (LLDPE) with natural rubber (NR) and different weight concentration of biofiller are conducted under high voltage direct voltage (HVDC) by using needle and sphere types of electrode arrangements. Oil palm empty fruit bunch (OPEFB) and pineapple leaf fiber (PALF) are the biofillers used for the samples development. The LLDPE-NR samples consists of different weight percentages of biofiller whic

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Dong Gyu Yang, Seungyong Hahn, Youngjae Kim, et al. "Characteristic Resistance of No-Insulation and Partial-Insulation Coils With Nonuniform Current Distribution." IEEE Transactions on Applied Superconductivity 24, no. 3 (2014): 1–5. http://dx.doi.org/10.1109/tasc.2013.2285103.

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Yang, Dong Gyu, Seungyong Hahn, Youngjae Kim, Yoon Hyuck Choi, Hyun-Jin Shin, and Haigun Lee. "Numerical Analysis on Characteristic Resistance of No-Insulation and Partial-Insulation NbTi Solenoids." IEEE Transactions on Applied Superconductivity 25, no. 3 (2015): 1–5. http://dx.doi.org/10.1109/tasc.2014.2375952.

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MUMINIYON, Alisher A., Yuri K. NAGANOVSKY, Vladimir M. ROITMAN, Boris B. SERKOV, Andrey B. SIVENKOV, and Ilya O. FEDOTOV. "Impact of long-term natural ageing of heat-insulating mineral wool materials on physicochemical and thermal transformations." Fire and Emergencies: prevention, elimination 3 (2024): 131–41. http://dx.doi.org/10.25257/fe.2024.3.131-141.

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Purpose. The article studies physico-chemical and thermal transformations of mineral wool thermal insulation of natural ageing. The subject of the study is thermal insulation materials of natural ageing, and the object of the study is their physicochemical and thermal characteristics. The aim of the work is to establish physicochemical and thermal transformations of mineral thermal insulation of natural ageing. The research is aimed at identifying features of physico-chemical and thermal transformations of thermal insulation based on mineral fibers and organic binders in the ageing process. Me

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Yuan, Liting, Zhiyi Wang, Yanyan Huang, and Xiaolong Wang. "Comparative Analysis on Load Characteristic of Intermittently Conditioned Buildings for Different Wall Insulation Forms." Energies 13, no. 18 (2020): 4974. http://dx.doi.org/10.3390/en13184974.

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The Air-conditioning System (ACS), used in office buildings in the hot summer and cold winter zone of China, are always operate intermittently. The dynamic thermal behaviors of building walls with real climate conditions may be different from those with only the representative day’s climate conditions, due to the time varying nature of the climate, which will lead to the variation of the ACS loads. A numerical calculation was performed to analyze the effects of insulation form on heat behavior of external walls and ACS loads. The results indicate that cooling transmission load with inside insu

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Gong, Yu Long, Jin Xi Guo, and Hong Fu Guo. "Feature Extraction Based on the Multiple Harmonic Analysis of 2-Dimensional Pattern of Partial Discharge." Applied Mechanics and Materials 303-306 (February 2013): 478–81. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.478.

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Partial discharge will cause deterioration of insulation of high-voltage electrical equipment, resulting in insulation breakdown and short circuit accident. In order to ensure the normal operation of the high-voltage equipment, it is necessary to detect partial discharge online. By using Ultra High Frequency (UHF) defection method, statistical 2-dimensional (2D) patterns of partial discharge are obtained. Extracting the envelopes of the 2D patterns, we do the harmonic analysis for patterns’ envelopes, and the harmonic components are used as a characteristic parameter for defect type’s recognit

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Zhu, Xiao Hui, Min Nie, and Hai Ming Bai. "Influence of Insulating Compounds Addition on Magnetic Properties of FeSi Cores." Applied Mechanics and Materials 320 (May 2013): 7–10. http://dx.doi.org/10.4028/www.scientific.net/amm.320.7.

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The process of preparation of Fe-Si cores is studied, and the influence of different amounts of insulating compounds addition on magnetic properties of the cores is discussed. The results show that the effective permeability is 71.4 when the amount of insulation is 0.5 wt%. When the content is increased to 2.5 wt%, the DC Bias characteristic becomes the best. When the insulating compounds addition is 2.5 wt%, the sample has the lowest power loss, which is 308.4 mW/cm3 at f=50 kHz and B=50 mT.

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Lou, Fengfei, Sujun Dong, Keyong Zhu, Xiaona Chen, and Yinwei Ma. "Thermal Insulation Performance of Aerogel Nano-Porous Materials: Characterization and Test Methods." Gels 9, no. 3 (2023): 220. http://dx.doi.org/10.3390/gels9030220.

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Due to the extremely high porosity and extremely low density of nano-porous thermal insulation materials, the characteristic size of the pores inside the materials and the characteristic size of the solid skeleton structure are on the nanometer scale, which leads to the obvious nanoscale effect of the heat transfer law inside the aerogel materials. Therefore, the nanoscale heat transfer characteristics inside the aerogel materials and the existing mathematical models for calculating the thermal conductivity of various heat transfer modes at the nanoscale need to be summarized in detail. Moreov

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Li, Lei, Xian Min Ma, and Wei Guo. "Evaluation Model of Cable Insulation Life Based on Improved Fuzzy Analytic Hierarchy Process." Mathematical Problems in Engineering 2021 (May 22, 2021): 1–11. http://dx.doi.org/10.1155/2021/6638258.

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Since the human society entered the electrification era, people’s work, life, and even the production and development of various industries in society are inseparable from the supply of electricity. The purpose of this paper is to establish a cable insulation life evaluation model based on the improved fuzzy analytic hierarchy process to test the current insulation characteristics and life of various types of cables, so as to ensure the quality of power supply and safe production of power. This paper first understands the cable insulation characteristics test process and electrical power-relat

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Zhang Xingyi, Yang Shuai, Shang Shuxiang, Wu Shaobo, Wang Hang, and Xiao Jixiong. "Calculation of Elastic Cross-sections of Gas Molecules and its Correlation with Insulation Strength Based on R-matrix Method." Acta Physica Sinica 73, no. 24 (2024): 0. http://dx.doi.org/10.7498/aps.73.20241355.

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The elastic collision cross-section is a key parameter in the study of inter-particle interactions, which helps to reveal the microscopic mechanism of gas insulation. For this reason, the elastic collision cross-sections of 24 gas molecules at 0-15 eV are calculated based on the R-matrix theory, and cross-section characteristic parameters of the lowest resonance state energy and its peak are extracted. Then the calculated and experimental values of SF<sub>6</sub>, CF<sub>2</sub>Cl<sub>2</sub>, and i-C<sub>3</sub>F<sub>7</sub>CN cross-

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You, Yi, Zhushi Yang, Puzhi Zhao, and Cheng He. "Directional motion behavior of metallic conductive particles in GIS." Journal of Physics: Conference Series 2797, no. 1 (2024): 012035. http://dx.doi.org/10.1088/1742-6596/2797/1/012035.

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Abstract Currently, metallic conductive particles constitute a significant risk to GIS insulation, and the motion of the particle is the direct cause of GIS insulation failure. The motion characteristic of particles is the key to conducting the study about the mechanism of particle-induced GIS insulation failure and the technology of particle suppression. However, current research lacks an analysis of the axial motion of particles, which should not be ignored. In this paper, the intensity and direction of the axial Coulomb force in the vicinity of the basin insulator are analyzed. Based on thi

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Xu, Yi Hua, Chun Bo Hu, Zhuo Xiong Zeng, and Yu Xin Yang. "Research on Mechanical Model of EPDM Insulation Charring Layer." Applied Mechanics and Materials 152-154 (January 2012): 57–63. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.57.

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The coupling effect of physics, chemistry and mechanics is through charring layer in the process of ablation of the insulation material. Description of the structure and mechanical properties of charring layer is the critical factor to numerical computation for foretelling the ablation of insulation material. The characteristic of charring layer structure of EPDM insulation at sorts of ablating condition were analyzed, and based on characteristic of porous medium of charring layer, the mechanical model with porosity as parameter was modeled by using theory of solid porous medium. According to

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Despotović, Željko. "Characteristic example of insulation coordination in power converters." Zbornik radova Elektrotehnicki institut Nikola Tesla 31, no. 31 (2021): 57–84. http://dx.doi.org/10.5937/zeint31-34667.

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Power electronics devices and modules that are most often used in power supply systems when compared to the passive components usually exhibit a very poor ability to withstand surge voltages. These surge voltages can be of different origins, and in most cases are transient surges. The recorded surge voltages even at low levels can lead to a damage of the mentioned power electronics devices or power converter components. Consequently, it is very important to implement a number of measures to increase the insulation level of the entire system. In this paper the two representative examples of ins

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Han, Tao, Wenhao Li, Zeping Zheng, Yanqing Li, Jia Chu, and Chunlin Hao. "Insulation Aging Evaluation Method of High Voltage Cable Based on Dielectric Loss Characteristics." Energies 18, no. 5 (2025): 1267. https://doi.org/10.3390/en18051267.

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Health assessments of high-voltage power cables are important for stable operations of power grids; however, most current health assessment model parameters lack whole cable test data, making them unable to effectively characterize the insulation aging state of whole cables. In this paper, a dielectric loss measurement device for high-voltage cables is developed. Using a high-voltage amplifier and high-precision dielectric loss measurement algorithm, the dielectric loss values of whole cables at different aging stages are measured, and the physicochemical and electrical characteristics of XLPE

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Plakhotnikov, Kyrylo, Dmitry Bondarenko, Elena Dedenyova, Medeia Saliia, and Tatiana Kostuk. "Heat-insulating materials in modern building industry." MATEC Web of Conferences 230 (2018): 02024. http://dx.doi.org/10.1051/matecconf/201823002024.

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The characteristic feature of the modern construction industry is the broad appliance of contemporary design and technology solutions, which require new constructive, water-proof, finishing and heat-insulating materials. Implementation of new energy saving norms for the residential sector and increasing requirements for thermal protection of buildings have sharpened an issue how to develop new thermal insulation materials. Although the thick-layered heat insulation is known for a while, the heat insulation made of thin layers requires additional studies. This group of constructive materials is

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Liu, Bowen, Fangcheng Lv, Xiaozhou Fan, Yueyi Sui, Jiaxue Wang, and Shengdong Yin. "Preparation and Performance Analysis of Transformer Aramid Nanopaper-Based Insulating Material Based on Deep Learning." Computational Intelligence and Neuroscience 2022 (August 11, 2022): 1–11. http://dx.doi.org/10.1155/2022/2282870.

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Transformers are an essential part of power production. Insulating paper began to be widely used in transformers in the 1990s. The superior aramid nanofiber as the matrix gives the aramid nano-insulating paper excellent mechanical properties, insulation performance, temperature resistance, and flexibility. At first, the heat resistance and service life of insulating paper should be satisfied for use in electrical equipment. With the continuous development of power equipment, people have put forward higher requirements on the properties of insulating paper, especially heat resistance and electr

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Zhang, Zhijin, Yuanpeng Zhang, Wei Xiao, Yong Sun, and Xingliang Jiang. "Research on Insulation Configuration of 220 kV Bushing in High-Altitude Polluted Areas." Energies 17, no. 7 (2024): 1645. http://dx.doi.org/10.3390/en17071645.

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The external insulation strength of the power equipment sleeve in the substation and converter station will be reduced with the increase in altitude and atmosphere pollution. The weakness of external insulation seriously threatens the safe operation of electrical equipment. At present, there are few studies and conclusions that focus on the flashover characteristics of power equipment bushing in high-altitude polluted areas. Therefore, this paper takes the 220 kV voltage level bushing as the research object and studies the Alternating Current (AC) pollution flashover characteristics and lightn

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Aulia, Putra Waldi Eka, Darwison, et al. "The effect of silica content to partial discharge characteristic of low-density polyethene and natural rubber blend as the electrical insulator." TELKOMNIKA Telecommunication, Computing, Electronics and Control 19, no. 2 (2021): pp. 631~637. https://doi.org/10.12928/TELKOMNIKA.v19i2.16417.

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The dielectric properties of low-density polyethylene natural rubber (LDPENR) biopolymeric insulating materials can be improved by adding the silica nanoparticles in a certain percentage of weight (w%). In the present study, four types of bio-nano polymeric samples were prepared. To each sample, the nanosilica particles with wt% 1.5%, 3%, 4.5% and 6%. As one characteristic of dielectric, the partial discharge (PD) characteristics, each sample has been tested for 1 hour under AC high voltage field, and the pulses were counted for each sample and grouped into positive and negative pulses. The PD

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Wang, Yu Li, Jian Kang Zhao, and Rong Xia. "Research on Characteristics of Partial Discharge in Typical Defects of High-Voltage XLPE Cable." Advanced Materials Research 986-987 (July 2014): 459–64. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.459.

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Six models of typical insulation defects are designed and lab-simulated system used for partial discharge (PD) detection of cables and accessories has been constructed to study PD characteristics of internal insulation defects in 110 kV XLPE cable system. By employing CPDM, a kind of on-line PD detector, test data of various models including related PD diagrams are obtained for our research. Based on these characteristic parameters, discharge characteristic analyses of a single PD pulse are presented and statistical operators can be obtained by numerical calculation. The experimental results s

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Hu, Ming, Hongliang Zhang, Xufei Ge, et al. "Effect of Crosslinking Temperature on the Insulation Performance of XLPE Secondary Crosslinking Insulation Interface Layer." Polymers 17, no. 7 (2025): 936. https://doi.org/10.3390/polym17070936.

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To investigate the impact of temperature variations during the secondary crosslinking of cross-linked polyethylene (XLPE) on the insulation performance of the interface layer, commercial XLPE cable pellets were subjected to flat hot pressing at 140 °C, 160 °C, 180 °C, and 200 °C. XLPE insulation interface layers were prepared at different secondary crosslinking temperatures. The samples were characterized by gel content, differential scanning calorimetry (DSC), thermal elongation test, power frequency breakdown voltage, and scanning electron microscope (SEM). Key parameters, including crosslin

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Liu, Shaohui, Nianbai Liang, Jiayang Chen, et al. "Insulation State Assessment of Cable Intermediate Joint based on the Combination of Variable Weight and TOPSIS." Journal of Physics: Conference Series 2424, no. 1 (2023): 012002. http://dx.doi.org/10.1088/1742-6596/2424/1/012002.

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Abstract In order to understand the insulation operation state of cable joint in real time, an evaluation method of cable joint insulation state based on improved TOPSIS with variable weight is proposed. Taking the partial discharge(PD) data monitored online as an example, the representative PD characteristic parameters is selected. Furthermore, Sen + Mann-Kendall test method is used to quantitatively calculate the trend change of corresponding PD characteristic parameters. Then the deterioration degree is introduced to normalize the PD characteristic parameters. Considering the change of weig

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Lv, Yuhui, Xiong Yang, Xianjun Shao, Yitong Yao, Xiaoxin Chen, and Haibao Mu. "Research on flashover characteristics of typical interconnect structures on printed circuit board and influential factors under DC voltage." AIP Advances 12, no. 8 (2022): 085009. http://dx.doi.org/10.1063/5.0100668.

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With the development of high-density and highly integrated electronic devices, the insulation characteristics between the interconnects of printed circuit boards (PCBs) are the key issues to be considered in their design and production. Most of the existing studies on insulation characteristics are based on parallel interconnect structures; however, the possibility of flashover or breakdown on PCB at parallel interconnects is relatively low compared to other irregular structures. The flashover characteristics of PCB interconnects need to be more comprehensively presented. In this paper, the co

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Saithanu, Thanyakon, and Amnart Suksri. "A Study on Coconut Shell Powder Filled in Epoxy Resin: A Remedy for Electrical Tree Growth Inhibition." Key Engineering Materials 718 (November 2016): 36–39. http://dx.doi.org/10.4028/www.scientific.net/kem.718.36.

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Electrical tree phenomenon is a long term degradation and can be found in solid insulator material. Its phenomenon will degrade the characteristic of insulator and may lead to breakdown. The use of filler in the process of manufacturing for the insulation is very popular method. This paper presents the use of coconut shell powder (CSP) filler in epoxy resin for inhibition of electrical tree growth. The CSP is filled with in ratio of 0.1, 0.3, 0.5, 0.8 and 1.0% by weight. The electrical tree was tested by AC voltage of 15kV and conducted for 30 minutes in this experiment. Experimental results s

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Tian, Yi, Haotian Niu, Shuai Wang, and Guixin Zhu. "Research on Online Monitoring of Partial Discharge of Insulation Defects in Air Switchgear Based on Characteristic Gases." Applied Sciences 15, no. 5 (2025): 2538. https://doi.org/10.3390/app15052538.

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Air switchgear is an important power equipment in the transmission, transformation, and distribution process of the power system. Insulation defects can lead to partial discharge, which is one of the primary causes of air switchgear failure. Current monitoring methods primarily rely on detecting ultra-high frequency or ultrasonic signals generated by partial discharge to identify insulation defects. However, these methods are prone to external signal interference, resulting in substantial detection errors. Based on gas discharge theory and engineering practice, this paper uses three typical de

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