Pollution Measurement of External Insulation of Power Transmission and Transformation Equipment

2020 ◽  
Author(s):  
Wang Xin wei ◽  
Liu hong ◽  
Yu hua
Keyword(s):  
Power Transmission ◽  
External Insulation ◽  
Pollution Measurement

Factors Contributing to Haze and the Influence on External Insulation of Power Equipments

2014 ◽  
Vol 700 ◽  
pp. 631-636 ◽  
Author(s):  
Song Gao ◽  
Zhi Cheng Zhou ◽  
Lin Jun Yang ◽  
Yong Liu ◽  
Feng Bo Tao ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Power Transmission ◽  
Rapid Development ◽  
Temporal And Spatial Distribution ◽  
External Insulation ◽  
Weather Phenomenon ◽  
Haze Pollution ◽  
Power Load ◽  
Pollution Flashover ◽  
Temporal And Spatial

Haze-fog has been a severe pollution weather phenomenon in China due to a large number of emissions of pollutants with the rapid development of economy. The areas burst haze are usually coincidence with high density of electricity transmission line corridor or power load areas, and so the pollution flashover accidents happen frequently. In this paper the haze pollution situations and factors contributing to haze are introduced, and the mechanisms of haze inducing and aggravating the pollution flashover accidents are explained by analyzing the temporal and spatial distribution of PM2.5 and size characteristics of dust deposited transmission. Moreover, the influences of haze on power transmission and transformation equipment external insulation are discussed with combining the simulation pollution flashover experiments of high conductivity fog.

Lightning Impulse Voltage Correction of Power Transmission and Transformation Project Typical Gap

2014 ◽  
Vol 986-987 ◽  
pp. 345-348
Author(s):  
Ying Jie Peng ◽  
Yu Jian Ding ◽  
Fang Cheng Lü
Keyword(s):  
Power Transmission ◽  
Theoretical Aspect ◽  
Correction Factors ◽  
Atmospheric Conditions ◽  
Atmospheric Parameters ◽  
External Insulation ◽  
Lightning Impulse ◽  
Improvement Method ◽  
Main Factors ◽  
Power Project

External insulation design of UHV power project is important. The lightning impulse (LI) voltage is one of the main factors that determine the air gap distance. Based on existing LI voltage results of power project typical gap, impact of gap structure and distance on LI discharge correction is analyzed. And from a theoretical aspect, existing LI discharge correction methods are summarized. Furthermore, by the use of common correction methods, LI voltage correction factors of rod - plane were calculated and analyzed. Results show no significant impact of gap type or gap distance on LI voltage correction is found out. Average atmospheric conditions are effective when atmospheric parameters method is used for LI voltage correction. DL/T 620, IEC 60060-1 and IEC 60071-2 can be used for LI voltage correction at areas with altitudes of 1000-5000m. While GB311.3-improvement method can be used for LI voltage correction at areas with altitudes blow 4000m.

Using the ARTIST approach for diagnosing power transmission networks

1994 ◽  
Vol 3 (3) ◽  
pp. 125 ◽  
Author(s):  
R. Leitch ◽  
H. Freitag ◽  
A. Stefanini ◽  
G. Tornielli
Keyword(s):  
Power Transmission ◽  
Transmission Networks ◽  
Power Transmission Networks

METHOD OF SYNTHESIS OF CLOSED-LOOP SYSTEMS OF ACTIVE SHIELDING MAGNETIC FIELD OF POWER TRANSMISSION LINES

2016 ◽  
Vol 2016 (4) ◽  
pp. 8-10 ◽  
Author(s):  
B.I. Kuznetsov ◽  
◽  
A.N. Turenko ◽  
T.B. Nikitina ◽  
A.V. Voloshko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Transmission Lines ◽  
Closed Loop ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
Closed Loop Systems ◽  
Active Shielding
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