Influence of current transformer layout and winding arrangement on protection action

Résumé fourni par la source

In the 3/2 connection of GIS/HGIS equipment, the installation of current transformers and the configuration of windings can lead to protection dead zones, causing protection to malfunction or fail to operate. This paper adopts a dual combination discrimination method of winding short circuit and circuit breaker fault. It proposes the logic for generating protection dead zones, analyzes the protection operation situations in various winding configuration methods under different voltage levels and 3/2 connection forms, and proposes an optimized configuration scheme for current transformers' windings, meeting the requirements for rapid protection operation in various short-circuit scenarios. The reliable operation of the intelligent substation project verifies the optimized configuration principle of current transformer windings, ensuring the stability and safety of the power grid.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.