Results 1 to 10 of about 63,572 (304)

Insulator detection in transmission line based on Log AdaBoost [PDF]

Scientific Reports
Insulator detection is an important task for safe and reliable operation of smart grid. Due to various background interferences in insulator images, most traditional image processing methods cannot achieve good performance.
Meijin Lin, Hao Chen, Haoyuan Luo
doaj   +2 more sources

Impact of increased temperature of lower end-fitting of a composite long rod insulator on its mechanical strength under variable loads [PDF]

Archives of Electrical Engineering, 2023
This paper describes results of tensile mechanical strength testing of two types of composite suspension line insulators from two manufacturers. In order to take into account the operation of composite insulators in overhead transmission lines with high ...
Jerzy Bielecki, Piotr Kotowski, Jacek Wańkowicz   +2 more
doaj   +1 more source

Full-Scale Testing and Theoretical Analysis of Influence of Tension Insulator Strings on the Sag of UHV Conductors

Zhongguo dianli, 2021
In order to study the influence of tension insulator string’s weight on the sags and tensions of ultra-high voltage (UHV) conductors, full-scale testing and theoretical analysis are carried out. The full-scale testing of sags of a three-span transmission
Gang SONG, Guohui SHEN, Yunan BAO, Fei TENG   +3 more
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Durability forecast of long rod composite insulators operating under variable mechanical loading conditions [PDF]

Archives of Electrical Engineering, 2022
Suspension line insulators are during their operation subject to static forces and variable loads, usually of a cyclic character. These variable loads have a significant impact on the mechanical durability of composite insulators.
Jerzy Bielecki, Jacek Wańkowicz
doaj   +1 more source

Analysis of partial discharges in supporting insulators [PDF]

Омский научный вестник, 2020
The diagnostics of overhead power lines is an important issue in the modern electric power industry. Sometimes supporting insulators are destroyed by external factors.
D. A. Polyakov, K. I. Nikitin, N. A. Tereshchenko, A. S. Novoselov, Ya. P. Bilevich   +4 more
doaj   +1 more source

Research on Zero Value Detection Technology of Porcelain Insulator [PDF]

E3S Web of Conferences, 2021
High-voltage insulators are one of the devices widely used in power systems, and their pros and cons are directly related to the safe and stable operation of the power system.
Mao Xiaopo, Zhou Xueming, Zhang Yaodong, Li Zijian, Huang Zeqi, Feng Zhiqiang, Ren Xiang, Fu Jianjin, Huang Junjie, Shi Tianru   +9 more
doaj   +1 more source

Surface charge accumulation and pre-flashover characteristics induced by metal particles on the insulator surfaces of 1100 kV GILs under AC voltage

High Voltage, 2020
With the increase in the voltage and capacitance of gas-insulated transmission lines (GILs), the insulation failure of GIL has attracted more and more attention.
Li Xing, Liu Weidong, Liu Weidong, Xu Yuan, Chen Weijiang, Bi Jiangang   +5 more
doaj   +1 more source

Analysis of the Ultrasonic Signal in Polymeric Contaminated Insulators Through Ensemble Learning Methods

IEEE Access, 2022
Outdoor insulators may experience stress due to severe environmental conditions, such as pollution and contamination. Through the identification of partial discharges by ultrasonic noise, it is possible to assess the possibility of a power grid failure ...
Stefano Frizzo Stefenon, Rafael Bruns, Andreza Sartori, Luiz Henrique Meyer, Raul Garcia Ovejero, Valderi Reis Quietinho Leithardt   +5 more
doaj   +1 more source

Comparative characterisation of conventional and textured 11 kV insulators using the rotating wheel dip test

High Voltage, 2020
Surface tracking and erosion is an irreversible degradation occurring on the insulator surface, and this can ultimately lead to failure of the insulator.
Adnan Krzma, Maurizio Albano, Abderrahmane Haddad   +2 more
doaj   +1 more source

Interfacial bonding enhancement of the RTV recoating with sandwiched contaminant by plasma jet

High Voltage, 2019
Room temperature vulcanised (RTV) silicone rubber is widely used in electrical power system, applied to the glass or porcelain insulator surface to enhance insulation.
Shanshan Wang, Shuang Li, Shuang Li, Jianjun Li, Jianjun Li, Ruobing Zhang, Hui Liu   +6 more
doaj   +1 more source