Title :
Device for overvoltage control in live line working
Author :
Udod, E. ; Molchanov, V. ; Taloverya, V. ; Brjesitsky, B.A. ; Gela, G.
Author_Institution :
Ukraine Power Res. Inst., Ukraine
Abstract :
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.
Keywords :
air gaps; maintenance engineering; overvoltage protection; power overhead lines; resistors; safety; voltage control; Ukraine; ZnO; highly nonlinear ZnO resistor; in-service validation tests; live line working; overvoltage control; overvoltages limitation; peak phase-to-earth maximum nominal system voltage; rod air gap; safety; sparkover voltage; Air gaps; Dielectrics and electrical insulation; Poles and towers; Protection; Resistors; Samarium; Testing; USA Councils; Voltage control; Zinc oxide;
Conference_Titel :
Transmission & Distribution Construction, Operation & Live-Line Maintenance Proceedings, 1998. ESMO '98. 1998 IEEE 8th International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-4883-4
DOI :
10.1109/TDCLLM.1998.668382
