Base Stations Rf Emf Exposure Assessment Methods

How to protect power stations and substations from lightning strikes?

1. Protection of Power Stations and Substations from Direct Lightning Strokes: Power stations are usually indoor while substations may be indoor or outdoor. For protection of a structure from direct strokes there are three requirements which are to be fulfilled. These requirements are interception, conduction and dissipation.

What is a lightning protection system?

An advanced lightning protection solution offering a state-of-the-art ground audit system that delivers precise results, even on energized systems.

How to protect transmission lines from direct lightning strikes?

(i) Protection of Overhead Transmission Lines from Direct Lightning Strokes by Ground Wires: A ground wire is a form of lightning protection employing a conductor or conductors, well-grounded at regular intervals, preferably at each support (pole or tower), and attached from support to support above the transmission line conductors.

What is effective lightning protection?

Effective lightning protection requires proactive measures that go beyond addressing direct strikes to also mitigate the broader range of lightning-related hazards, including induced surges and ground potential rise.

How should a lightning protection System (RBS) be formed?

The earthing network of an RBS should be formed by a ring loop surrounding the tower, equipment room and fence, at a minimum. The mean radius re of this ring loop should be not less than l1, as indicated in Figure 1 and this value depends on the lightning protection system (LPS) class and on the soil resistivity.

How do you protect a radio station from a lightning attack?

Shielding of the station and the incoming lines (about 0.8 km out from the station) to restrict the severity of the waves that can enter the station through the lines is a desirable supplement, particularly in the case of hv lines (66 kV and above) to the lightning arrester located in the station [Fig. 9.10 (b)].