Title :
Design criteria for SF6 gas insulated power transformers up to 2500 kVA
Author_Institution :
Dept. of Electr. Eng., Tech. Univ. of Yildiz, Istanbul, Turkey
Abstract :
When installing transformers, protection of the environment, operational reliability, maintenance and fire risks are important considerations. This applies in particular to distribution transformers up to 2500 kVA which are often installed close to load centers. Conventional liquid-insulated or dry-type transformers do not always fully meet today´s requirements. In this paper, the present state of development of gas-insulated transformers is discussed. The fact that they are totally enclosed (safe to touch), their neutral gas filling, and the extremely small quantity of insulating material required, are described in detail
Keywords :
SF6 insulation; partial discharges; power system reliability; power transformer insulation; transformer windings; 2500 kVA; SF6; cooling ducts; design criteria; distribution transformers; electrical stresses; gas insulated power transformers; neutral gas filling; partial discharge inception voltage; reliability; windings; Cooling; Filling; Fires; Gas insulation; Insulators; Power transformer insulation; Power transformers; Protection; Sulfur hexafluoride; Transformer cores;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-5414-1
DOI :
10.1109/CEIDP.1999.804654
