Active standard | Published: 02/09/2026

IEEE P998

IEEE Approved Draft Guide for Direct Lightning Stroke Shielding of Substations

Available languages: English

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Detail information

Designation: IEEE P998

Publication date: 02/09/2026

Pages: 0

Country: International technical standard

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Anotation

Revision Standard - Active - Draft.
Design information for the methods historically and typically applied by substation designers to reduce direct lightning strokes to equipment and buswork within substations is provided. Two approaches, the classical empirical method and the electro-geometric model, are presented in detail. A third approach, which involves the use of non-conventional lightning terminals and related design methods, is also reviewed.

ISBN: 979-8-8557-3254-2, 979-8-8557-3254-2
Number of Pages: 190
Product Code: STDUD28723, STDAPE28723
Keywords: collection volume method (CVM), direct stroke shielding, electro-geometric model (EGM), field intensification factor method (FIFM), fixed angle, IEEE Std 998™, leader inception theory (LIT), leader progression model (LPM), lightning stroke protection, self-consistent leader inception and propagation model (SLIM), substations empirical curves
Category: Substation
Draft Number: P998/D26-1, Feb 2026 - UNAPPROVED DRAFT, P998/D26-1, Feb 2026 - APPROVED DRAFT

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