Working Group Details
WGG5 - Direct Lightning Stroke Shielding of Substations
|Working Group Chair||
|IEEE Program Manager|
This guide describes the general nature of lightning and discusses design methods for placement of masts and shield wires to provide direct stroke shielding of outdoor substations.Tables, formulas, and examples are provided to calculate effective shielding from direct lightning strokes. This guide specifically does not include: 1) every shielding design method that may have been developed 2) protection from surges entering a substation over power or communication lines 3) personnel safety issues
Design information for the methods historically and typically applied by substation designers to minimize direct lightning strokes to equipment and buswork within substations is provided. Two approaches, the classical empirical method and the electrogeometric model, are presented in detail. A third approach involving the use of active lightning terminals is also briefly reviewed.