Results 251 to 260 of about 711,979 (342)

Insulator Contamination Diagnosis Method Based on Deep Learning Convolutional Neural Network

2021 3rd Asia Energy and Electrical Engineering Symposium (AEEES), 2021
Insulators are one of the most used electrical equipment in the power system. Long-term exposure to the air environment can easily cause pollution flashovers and have a serious impact on the safe operation of the power transmission system. In this paper,
Yunpeng Liu, Tingyu Lai, Jiashuo Liu, Yonglin Li, Shaotong Pei, Jiajun Yang   +5 more
semanticscholar   +1 more source

Characterization of Hygroscopic Insulator Contamination via Laser-Induced Breakdown Spectroscopy

IEEE Transactions on Plasma Science, 2021
Flashovers seriously affect the safe operation of high-voltage transmission lines. The influence of different pollutants on the flashover of insulators differs greatly.
X. Qin, Fuzeng Zhang, Shaojie Chen, Tingting Wang, X. Hong, Xilin Wang, Z. Jia   +6 more
semanticscholar   +1 more source

Accurate Sensing of Insulator Surface Contamination Using Customized Convolutional Neural Network

IEEE Sensors Letters, 2023
Accurate sensing of contamination on the insulator surface is vital for the reliable operation of transmission lines. Hence, the present work aims to develop a deep learning framework for remote and accurate contamination sensing on the surface of ...
Sayanjit Singha Roy, A. Paramane, Jiwanjot Singh, S. Chatterjee, A. K. Das   +4 more
semanticscholar   +1 more source

Electrical-insulation contaminants

Electrical Engineering, 1949
SERVICE EXPERIENCE with electric apparatus has indicated that in many cases the presence of “contaminants” has contributed to the failure of electrical insulation. In the category of contaminants are included moisture, salt, oil, carbonaceous materials, and dust.
K. N. Mathes, L. E. Sieffert, H. P. Walker, R. H. Lindsey   +3 more
openaire   +1 more source

Investigation of the Insulation Condition of Contaminated Solid Epoxy Insulators

2020 IEEE 1st International Conference for Convergence in Engineering (ICCE), 2020
This paper reports the assessment of impurities of solid Epoxy insulator by sensing Polarizing and Depolarizing Current under high voltage excitation. Several impure Epoxy samples were created carefully by contaminating different level of carbon dust particles within it.
Sandipan Kumar Paul, Subrata Biswas, Tridibesh Nag, Sovan Dalai   +3 more
openaire   +1 more source

Assessment of Insulator Pollution Degree Based on Contamination Moisture With Temperature Change

IEEE Sensors Journal, 2022
For the safe operation of the power grid, online monitoring of insulator pollution degree is of great significance to the power system. Considering that the insulator contamination mostly is accumulated in the dry season with little rain, it is very ...
Bin Cao, Yuhao Liu, Zong Li, Shuhang Shen, Liming Wang, Zhongdong Wang   +5 more
semanticscholar   +1 more source

The insulator contamination problem

Electrical Engineering, 1958
POWER COMPANIES operating in areas subjected to air-borne contamination have, for many years, been faced with a difficult operating problem. Maintenance of satisfactory operation has required that insulators be cleaned periodically by hand wiping or periodic washing (energized or de-energized).
J. E. Conner, A. D. Lantz
openaire   +1 more source

Pole Fires Due to Insulator Contamination

Transactions of the American Institute of Electrical Engineers, 1948
WOOD POLES and crossarms of overhead electric lines may become ignited and damaged when the surface of the insulators and wooden parts are contaminated by industrial dirt and exposed to fog or light drizzle. A few pole fires have occurred in the Chicago area under circumstances which gave a basis for further laboratory study.
W. H. Wickham, H. A. Adler, M. S. Oldacre   +2 more
openaire   +1 more source

Insulation characteristics of contaminated vacuum

Conference Record of the 1988 IEEE International Symposium on Electrical Insulation, 2003
Results are presented relating to the outgassed products from three common insulating polymers under vacuum at elevated temperatures up to 400 degrees C. Nylon-6, polymethylmethacrylate and polytetrafluoroethylene (PTFE) have been studied. PTFE is the most stable, while nylon-6 outgasses large quantities of water vapor.
I.D. Chalmers, G.R. Sankey, R. Mahmood
openaire   +1 more source

Mathematical Morphology aided Random Forest Classifier based High Voltage Porcelain Insulator Contamination level Classification

2020 IEEE Region 10 Symposium (TENSYMP), 2020
In the present work, the influence of different surface contaminations on the performance of a porcelain insulator is investigated. The measurement of the Leakage current on different classes of the contaminated porcelain insulators is performed with the
Kaushik Sit, Abhinaba Chakraborty, S. Dalai, B. Chatterjee, A. Pradhan   +4 more
semanticscholar   +1 more source