Optimized Design of Shed Parameters for Polluted Hollow Porcelain Insulators at High Altitude
IEEE Access, 2023 The pollution flashover problem of hollow insulators, one of the primary faults in substations, can be improved by optimizing the shed parameters. Combining the artificial pollution test and electric field simulation, this paper studies the optimal shed ...
Ziwei Qiu +9 more
doaj +1 more source
AIP Advances, 2022 The infrared thermal image detection method has unique advantages in the field of low zero value diagnosis of porcelain insulators. However, since the length of the extra–ultra-high voltage (EHV–UHV) porcelain insulator string can reach more than 10 m ...
Xiaopo Mao, Xueming Zhou
doaj +1 more source
Prediction Flashover Voltage on Polluted Porcelain Insulator Using ANN
Computers Materials & Continua, 2021 : This paper aims to assess the effect of dry band location of contaminated porcelain insulators under various flashover voltages due to humidity.
A. Salem +4 more
semanticscholar +1 more source
The application of terahertz technology in ultra high voltage large tonnage insulator detection
Energy Reports, 2023 Among major nondestructive testing technologies (NDT), such as X-ray and ultra-sound, Terahertz (THz) waves present significant transmission rate through most of nonconductive materials without the need of applying couplant while posing zero ionized ...
Shengzhe Yang +4 more
doaj +1 more source
Risk Probabilistic Characteristics for Contaminated Porcelain Insulator in the Egyptian Sinai Desert
Journal of Electrical and Computer Engineering, 2023 Transmission lines in the desert are exposed to the desert environment, which includes sandstorms as one of its hallmarks. A conductive layer develops with prolonged sand deposition and the presence of moisture, ambient humidity, and dew.
Mohammed El-Shahat +2 more
doaj +1 more source
Feasibility study on application of microwave radiometry to monitor contamination level on insulator materials [PDF]
, 2016 This paper introduces a novel method for monitoring contamination levels on high voltage insulators based on microwave radiometry. Present contamination monitoring solutions for high voltage insulators are only effective in predicting flashover risk when
Jiang, Y. +5 more
core +2 more sources
Monitoring contamination level on insulator materials under dry condition with a microwave reflectometer [PDF]
, 2016 Current techniques used for monitoring the levels of contamination on high voltage insulators, such as leakage current and infrared, are not effective in dry conditions since they require the surface of the insulator to be wetted by fog, rain or snow. If
Jiang, Y. +5 more
core +1 more source
Simulation of Contamination Deposition on Typical Shed Porcelain Insulators
Energies, 2017 The contamination deposition characteristics of insulators can be used in the development of antifouling work. Using COMSOL software, numerical simulations on the pollution-deposited performance of a porcelain three-umbrella insulator and porcelain bell ...
Yukun Lv +3 more
doaj +1 more source
Analysis of Thermal Sensitivity by High Voltage Insulator Materials
IEEE Access, 2020 Insulators serve bi-fold objectives of holding the conductor and electrical segregation from the grounded structure. For reliable operation of utility, electrical and mechanical strength of insulators are equally significant.
Taeyong Kim +5 more
doaj +1 more source
Influence of single and multiple dry bands on critical flashover voltage of silicone rubber outdoor insulators: simulation and experimental study [PDF]
, 2018 Dry band formation on the surface of outdoor insulators is one of the main reasons leading to flashover and power outages. In this paper, a dynamic arc model is proposed for single and multiple dry bands configuration to predict the critical flashover ...
Arshad, Arshad +4 more
core +4 more sources