Device for overvoltage control in live line working

Device for overvoltage control in live line working

A new device for control of overvoltages during live work has been developed in Ukraine. The device provides improved limitation of overvoltages at the worksite in comparison with the traditional portable protective gap that has been in use for several decades. The new device consist of a rod air ga...

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Bibliographische Detailangaben
Hauptverfasser: Udod, E., Molchanov, V., Taloverya, V., Brjesitsky, B.A., Gela, G.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Air gaps
Dielectrics and electrical insulation
Poles and towers
Protection
Resistors
Samarium
Testing
USA Councils
Voltage control
Zinc oxide
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Beschreibung
Zusammenfassung:A new device for control of overvoltages during live work has been developed in Ukraine. The device provides improved limitation of overvoltages at the worksite in comparison with the traditional portable protective gap that has been in use for several decades. The new device consist of a rod air gap connected in series with a highly nonlinear ZnO resistor. The sparkover voltage of the device is 1.5 to 1.7 times the peak phase-to-earth maximum nominal system voltage. The new device has been tested extensively in the laboratory and is now undergoing in-service validation tests.
DOI:10.1109/TDCLLM.1998.668382