NOVEL HIGH VOLTAGE VACUUM SURFACE FLASHOVER INSULATOR TECHNOLOGY

1993 ◽  
Author(s):  
J.M. Elizondo
Keyword(s):  
High Voltage ◽  
Surface Flashover

A multi-functional high voltage experiment apparatus for vacuum surface flashover switch research

2015 ◽  
Vol 86 (4) ◽  
pp. 043302 ◽  
Author(s):  
Bo Zeng ◽  
Jian-cang Su ◽  
Jie Cheng ◽  
Xiao-long Wu ◽  
Rui Li ◽  
...  
Keyword(s):  
High Voltage ◽  
Surface Flashover

Research on Experimental Methods of Evaluating Deterioration Performance of High-Voltage Insulators

2014 ◽  
Vol 538 ◽  
pp. 243-246
Author(s):  
Jiang Zhou Cheng ◽  
Si Ying Wang
Keyword(s):  
Environmental Factors ◽  
Power System ◽  
High Voltage ◽  
Experimental Methods ◽  
Surface Discharge ◽  
Surface Flashover ◽  
System A ◽  
High Voltage Insulator ◽  
Voltage Insulator ◽  
Timely Treatment

High-voltage insulator is a kind of common and important device in the grid, in the processing of its function, effections of various environmental factors will make its insulation to deterioration and decline, without timely treatment, the accumulated deterioration may lead to surface discharge, and even surface flashover, which will damage the insulation and greatly endanger the safety of power system. A method by accurately testing the ultraviolet intensity of insulators which is under the conditions of different deterioration and filthy is proposed on this basis, and depend on which we can provide evidences for finding early deterioration of insulators.

scholarly journals Influence of Field Spacer Geometry on the Performance of a High Voltage Coaxial Type Transmission Line with Solid Dielectric Spacer in Vacuum

2017 ◽  
Vol 7 (3) ◽  
pp. 1605-1610
Author(s):  
A. P. Anagha ◽  
K. Sunitha
Keyword(s):  
Power Systems ◽  
Transmission Line ◽  
High Voltage ◽  
Electrical Breakdown ◽  
Pulsed Power ◽  
Peak Voltage ◽  
Surface Flashover ◽  
Pulse Distortion ◽  
Positive Angle ◽  
Microwave Sources

With the development of more powerful high power electromagnetic sources, the transmission of high voltage power particularly between pulsed power systems to huge power rated microwave sources in absence of electrical breakdown and pulse distortion has begun to become a vital issue. A high voltage coaxial type transmission line with 500 kV peak voltage in vacuum is proposed. A novel proposal of configuration bearing a positive angle of 45o with socket-type filed shaper is being discussed in this paper in a manner to improve surface flashover properties and also to decrease the distortion seen in the pulse shape. This type of transmission line provides high capability of hold off voltage. The electric field distribution of the coaxial geometry with different field shaper configurations and different spacer parameters are also investigated using COMSOL software.

scholarly journals Effect of High Voltage Impulses on Surface Discharge Characteristics of Polyethylene

2017 ◽  
Author(s):  
Roya Nikjoo ◽  
Nathaniel Taylor ◽  
Hans Edin
Keyword(s):  
High Voltage ◽  
Similar Case ◽  
Surface Discharge ◽  
Discharge Characteristics ◽  
Surface Flashover ◽  
Subsequent Application ◽  
Surface Discharges ◽  
Transient Voltages ◽  
Number Of Discharges

<p>This paper investigates the influence of high voltage impulses on the surface discharge characteristics of polyethylene (PE) during subsequent application of 50 Hz AC voltage. The investigation is done on two types of PE to examine the generality of the phenomena. The effect of impulses on the surface discharge features of PE are studied for both cases of having either a streamer or flashover. For each case, the consecutive surface discharges behave differently when the insulation has been exposed to the transient voltages. <br />The effect of impulses on surface discharge of PE is shown by the change of PD numbers and phase-resolved PD patterns. The results show a prompt change in the total number of discharges which decays with the time. After a surface flashover has occurred due to the impulse, the PD behaves quite differently compared to the similar case without flashover.</p>

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