STRUCTURE IMPROVMENT OF THE DC REACTOR (DCR) BASED ON FAULT CURRENT LIMITER BY USING PERMANENT MAGNET IN CORE STRUCTURE (PDCR) AND MAGNETIC FIELDS INVESTIGATION OF PDCR CORE UNDER DIFFERENT NETWORK CONDITIONS, Ankara, Türkiye, 18 - 20 Ekim 2019, ss.948, (Özet Bildiri)