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Research of Flashover of Power Line Insulators Due to High-Voltage Pulses With Power ON and Power OFF

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4 Author(s)
Parfenov, Y.V. ; Joint Inst. for High Temps., Moscow, Russia ; Zdoukhov, L.N. ; Shurupov, A.V. ; Kozlov, A.V.

This paper includes the results of an investigation of high-voltage pulse effects on insulators of a 10-kV power line. Experiments have been performed by means of equipment that simulates the simultaneous effect of a pulse disturbance and a power line operating voltage. Critical levels of insulator flashover have been determined. These levels are dependent on the pulse disturbance duration, and a number of other effects. The electric characteristics of insulators degrade when high-voltage pulses are injected on an insulator with power ON. As a result, some insulators have been destroyed. The possible reason of destruction is the presence of latent defects.

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:55 ,  Issue: 3 )