Effective Lightning Protection Design System For Outdoor And Indoor Substations
Direct lightning strikes to transmission lines or substations may damage the electrical equipment and threaten any nearby personnel. More over a lightning strike on a transformer can cause a major explosion due to the amount of extra voltage injected into it. Lightning bolts can contain up to 120 million volts – depending on the length and size. When a transformer blows, it can knock out power for hundreds to thousands of people. In addition, collateral damages can occur because any line connected with the blown transformer, is now live and could be carrying thousands of volts. Blown transformers can also set its surroundings on fire, especially in dry environments. Because substations should operate reliably and because they are susceptible to lightning strikes, it is common practice to provide a Lightning Protection Design System for both outdoor and indoor substations. LEC lightning protection is based on some very basic principles: Don’t attract lightning, eliminate it If some s