Overhead Ground Wire Lightning Protection

Instead of a standard ground wire two ground wires placed at the top of separate external towers located at both sides of the protected line are used.

Overhead ground wire lightning protection.

For strokes to wires or the ground plane. That is the lightning will bypass the overhead ground wire and strike the phase wire. Overhead shield wire provides lightning protection and distributed grounding important for safe operation of power lines. The static wire shall be grounded at every pole except manually operated group air break switch poles.

Abstract in this paper a new kind of overhead transmission line ohl lightning protection system based on external ground wires is analyzed. Protection zone of ground wire is a cone with apex at the location of ground wire and surface generated by line passing through the outermost phase conductor. The overhead earth wire or ground wire is the form of lightning protection using a conductor or conductors. Conex cable s aluminum clad steel as wire overhead shield wires also referred to as ground wire provide the best protection for these vital electrical power lines.

Protecting things like lighting standards or trees can provide some area protection based on the zone model. Commonly used for overhead shield wire in high corrosion areas such as industrial seashore and desert environments. In special circumstances where lightning cannot be allowed to penetrate the use of tall masts and overhead ground wires used in a reduced zone model can provide additional protection. By means of a formed copper wire grounding electrode at each pole.

2 1 1 installation of static wire the preferred method of lightning protection of overhead sub trans mission circuits is through use of an overhead static wire. For a free material quote and a designed catenary lightning protection system please contact us with your specifications and drawings. Opgw of which has aluminum clad steel as a component is also used for overhead shield wire. Listed items are common parts for catenary systems.

The earth wire intercepts the direct lightning strikes which would strike the phase conductors. Lightning protection of. It is attached from support to support above the transmission line and well grounded at regular interval. Performance of electric power overhead distribution lines ieee std 1410 2011 iec 62305 protection against lightning 2013 nfpa 780.

Standard for the installation of lightning protection systems 2014 standards 20. Transmission and distribution lines carrying large blocks of power must be permanently protected from lightning strikes and the occasional fault.