Analysis on natural contamination characteristics of UHV AC post porcelain insulator

2016 ◽  
Author(s):  
Rui Zhang ◽  
Guangya Wu ◽  
Tian Yuan
Keyword(s):  
Porcelain Insulator ◽  
Natural Contamination

scholarly journals Fabrication of electrical porcelain insulator from ceramic raw materials of Oromia region, Ethiopia

Heliyon ◽  
2019 ◽  
Vol 5 (8) ◽  
pp. e02327 ◽  
Author(s):  
Andualem Merga ◽  
H.C.Ananda Murthy ◽  
Enyew Amare ◽  
Kalid Ahmed ◽  
Eshetu Bekele
Keyword(s):  
Raw Materials ◽  
Electrical Porcelain ◽  
Porcelain Insulator

The effect of fluxing agent MnO2 on alumina silicate porcelain insulator properties

2016 ◽  
Author(s):  
Dharmender Dudi ◽  
M. S. Shekhawat ◽  
G. P. Singh
Keyword(s):  
Porcelain Insulator ◽  
Fluxing Agent

Water decolorization using UV radiation and hydrogen peroxide: A kinetic study

2001 ◽  
Vol 44 (5) ◽  
pp. 53-60 ◽  
Author(s):  
C.A. Martín ◽  
O.M. Alfano ◽  
A.E. Cassano
Keyword(s):  
Hydrogen Peroxide ◽  
Uv Radiation ◽  
Absorption Rate ◽  
Fulvic Acids ◽  
Photon Absorption ◽  
Contaminant Concentration ◽  
Organic Substances ◽  
Mechanistic Approach ◽  
Natural Contamination ◽  
Kinetics Of

Sometimes, provision of water for domiciliary consumption faces the problem of natural contamination originated by the presence of organic substances such as humic or fulvic acids. Very often, after conventional sanitary treatments this water exhibits a persistent yellowish coloration that affects its use. Moreover, these substances may act as precursors of tri-halomethanes formation during pre-desinfection with chlorine. This paper presents, with a simplified mechanistic approach, the intrinsic reaction kinetics of natural water decolorization employing UV radiation and hydrogen peroxide. The main variables for the model are: contaminant concentration expressed as TOC, hydrogen peroxide concentration and the photon absorption rate.

Analysis of natural contamination components and sources of insulators on ±800 kV DC lines

2019 ◽  
Vol 167 ◽  
pp. 192-198
Author(s):  
Zhenghao He ◽  
Feng Gao ◽  
Zhifei Tu ◽  
Yuchan Zhang ◽  
Hui Chen
Keyword(s):  
Natural Contamination

The Research on Deposition Saturation of Disc Suspension Porcelain Insulator

2014 ◽  
Vol 986-987 ◽  
pp. 1881-1883
Author(s):  
Tian Shu Hai ◽  
Qing Hao Wang ◽  
Chang Xin Ge ◽  
Shao Yong Wu ◽  
Peng Fei Cheng ◽  
...  
Keyword(s):  
Lower Surface ◽  
Comparison Method ◽  
Experimental Results ◽  
Salt Deposit ◽  
Porcelain Insulator ◽  
Saturation Time ◽  
Insulator Surface ◽  
Suspension Insulator ◽  
Actual Operation ◽  
Deposit Density

The equivalent salt deposit density (ESDD) is an important characteristic of our country which is used to measure insulator deposition level. The contamination of the insulator would reach saturation after a period of time.In order to increase the specific creepage distance, disc suspension porcelain insulator lower surface inward concave, which makes the rain washing the upper surface difficult, that cause the saturation time of lower surface longer than upper surface .For studying the operation insulator contamination saturation time and reflecting the ESDD of the actual operation line accurately,this paper adopts a comparison method between empty hanging insulator surface and operation insulator surface to measure the ESDD , the field experimental results further verify that the saturated time of disc suspension insulator lower surface is longer, so as to lay the foundation for the ESDD measurement.

Mineral barriers against natural contamination from excavated rocks

2012 ◽  
pp. 924-929
Author(s):  
Angelica Naka ◽  
Takeshi Katsumi ◽  
Giancarlo Flores ◽  
Toru Inui ◽  
Atsushi Takai ◽  
...  
Keyword(s):  
Natural Contamination

scholarly journals Effectiveness of immobilizing agent used as a sorption layer against natural contamination

2015 ◽  
Vol 1 (4) ◽  
pp. 19-24 ◽  
Author(s):  
Jialin Mo ◽  
Toru Inui ◽  
Takeshi Katsumi ◽  
Kenji Kuninishi ◽  
Hayashi Shintaro
Keyword(s):  
Sorption Layer ◽  
Natural Contamination

Effect of ZrO2 on the sintering behavior, strength and high-frequency dielectric properties of electrical ceramic porcelain insulator

2018 ◽  
Vol 5 (1) ◽  
pp. 015202 ◽  
Author(s):  
Niraj Singh Mehta ◽  
Praveen Kumar Sahu ◽  
Md Ershad ◽  
Vipul Saxena ◽  
Ram Pyare ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
High Frequency ◽  
Sintering Behavior ◽  
Porcelain Insulator ◽  
Electrical Ceramic ◽  
Behavior Strength
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