Results 71 to 80 of about 114,124 (166)

Study on Thermal/Moisture Expansion Stress of a Drop-Out Fuse Insulator

Journal of Applied Science and Engineering
Drop-out fuses are widely used electrical devices, and their reliability directly affects the safety of power supply systems. Porcelain insulators, as a critical component, are prone to cracking, which significantly disrupts the order of power production.
Jun Li, Suhui Zhang, Jinpeng Xie, Fei Jiang, Zhaoyu Zhang, Guangru Zhang   +5 more
doaj   +1 more source

Comparison of Eight Month Coastal Polluted Porcelain and Epoxy Resin Outdoor Insulators [PDF]

ITB Journal of Engineering Science, 2008
This study presents the experimental results of eight months naturally coastal polluted outdoor porcelain and epoxy resin insulators. The experiments were leakage current and applied high voltage measurements used a two-channel storage digital ...
Waluyo,, Ngapuli I. Sinisuka,, Parouli M. Pakpahan,, Suwarno &, Maman A. Djauhari   +4 more
doaj  

Diagnosis of High Voltage Insulators Made of Ceramic Using Spectrophotometry

Journal of Spectroscopy, 2016
The paper presents results of comparative analysis of optical signals emitted by partial discharges occurring on three types of high voltage insulators made of porcelain.
Paweł Frącz, Ireneusz Urbaniec, Tomasz Turba, Sławomir Krzewiński   +3 more
doaj   +1 more source

The Influence of Natural Contamination on Pollution Flashover Voltage Waveform of Porcelain Insulators in Heavily Polluted Area

IEEE Access, 2019
It is significant to reveal the characteristics of voltage waveform of porcelain insulator with heavy industry pollution in flashover test. In this study, the contamination of insulator samples came from heavy industry pollution areas was measured.
Lei Lan, Gongda Zhang, Yu Wang, Xishan Wen, Wei Wang, Huan Pei   +5 more
doaj   +1 more source

Analysis of lightning impulse rain flash characteristics and performance enhancement of 35 kV insulator string with zero-value unit

电力工程技术
Lightning weather is frequently accompanied by heavy rainfall, resulting in the bridging of the insulator umbrella skirt of the transmission line by rain columns. Under the impact of lightning, the "bridging effect" may occur.
Bingbing DONG, Xia YAO, Yu QIAO, Jinbo ZHAO   +3 more
doaj   +1 more source

Prediction of pollution flashover voltages of ceramic string insulators under uniform and non-uniform pollution conditions

Journal of Electrical Systems and Information Technology, 2016
Present paper emphasizes on the development of a new mathematical model to estimate the contamination flashover voltages of ceramic string insulators under varying uniform and non-uniform pollution conditions subjected to AC voltages.
Chandrashekhar Badachi, Pradipkumar Dixit   +1 more
doaj   +1 more source

Leakage Current Analysis of Glass, Porcelain, and Silicone Insulators Under Icing Conditions Using Spectrogram-Based Deep Convolutional Neural Networks

Sensors
Insulators are essential for the secure and uninterrupted functioning of high-voltage transmission lines. However, since insulators are exposed to the outdoor environment, they are inevitably affected by environmental conditions such as icing ...
Muhammed Buğracan Özküçük, Ömer Faruk Alçin, Muhsin Tunay Gençoğlu   +2 more
doaj   +1 more source

DC Flashover Performance of Various Types of Ice-Covered Insulator Strings under Low Air Pressure

Energies, 2012
In this study, icing flashover performance tests of typical DC porcelain, glass, and composite insulators are systematically carried out in a multifunction artificial climate chamber.
Lichun Shu, Xingliang Jiang, Daibo Xiao, Jianlin Hu, Caixin Sun, Zhijin Zhang   +5 more
doaj   +1 more source

A degraded cantilever model for post insulators under cyclic loading

Scientific Reports
Support-type tubular busbar structures widely used in substations are inherently vulnerable to earthquake-induced damage. This study experimentally characterizes the load-resisting behavior and deformation mechanisms of post insulators under quasi-static
Qilin Sun, Guanglin Yuan, Xinghui Wu
doaj   +1 more source

Structural Performance of Porcelain Insulators in Overhead Railway Power Systems: Experimental Evaluations and Findings

Infrastructures
This paper addresses the critical knowledge gap in the structural performance of porcelain insulators in overhead railway power systems through experimental evaluations. The focus is on porcelain insulators as part of a contact wire registration assembly
Pablo Agüero-Barrantes, Alexandra Hain
doaj   +1 more source