Title :
Safety performance evaluation of fence grounding configurations in high voltage installations
Author :
Datsios, Zacharias G. ; Mikropoulos, P. ; Teneketzoglou, Andreas ; Tzikas, Dimitrios
Author_Institution :
High Voltage Lab., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece
Abstract :
The design of the grounding configuration for the metal fence of a high voltage installation is important as the outside perimeter of the fence is accessible to the general public. In this work the safety provided by several fence grounding techniques commonly used in high voltage installations is evaluated for a 150/20 kV air insulated substation, a 400 kV step-up GIS substation and a large scale photovoltaic power station with the aid of grounding analysis software. A safe and cost-efficient fence grounding design depends on ground fault characteristics, soil conditions, installation area, distance between the fence and grounding grid as well as on the size and geometry of the latter.
Keywords :
air insulation; earthing; electric fences; electrical installation; electrical safety; gas insulated substations; photovoltaic power systems; soil; air insulated substation; fence grounding configurations; fence grounding techniques; ground fault characteristics; grounding analysis software; high voltage installations; installation area; large scale photovoltaic power station; metal fence; safety performance evaluation; soil conditions; step-up GIS substation; voltage 400 kV; Electric potential; Electrodes; Grounding; Materials; Power generation; Safety; Substations; fence grounding; photovoltaic power stations; safety; substations; touch and step voltages;
Conference_Titel :
Power Engineering Conference (UPEC), 2014 49th International Universities
Conference_Location :
Cluj-Napoca
Print_ISBN :
978-1-4799-6556-4
DOI :
10.1109/UPEC.2014.6934650
