A novel thyristor-assisted tap changer scheme

• Published in: 14th International Conference and Exhibition on Electricity Distribution (CIRED 1997 - Distributing Power for the Millennium) pp. 1.28.1 - 1.28.5
• Main Authors: Shuttleworth, R, Power, A.J, Tian, X, Jiang, H, Al Zahaei, B.A.T
• Format: Conference Proceeding
• Language: English
• Published: London IEE 1997
• Subjects: Applied sciences; Electrical engineering. Electrical power engineering; Exact sciences and technology; Power convertors and power supplies to apparatus; Switchgear; Transformers and inductors; Transformers and reactors; voltage maintenance; snubbers; load changes; power transformers; power system; divertors; switchgear; on-load tap-changing power transformers; thyristor applications; thyristor-assisted tap changing scheme; Power thyristor; On load tap changer; Static switch; Power transformer
• ISBN: 9780852966747; 0852966741
• ISSN: 0537-9989
• DOI: 10.1049/cp:19970467

On-load tap-changing power transformers are an essential part of any modern power system, since they allow voltages to be maintained at desired levels despite load changes. This paper describes a new thyristor-assisted tap changing scheme which has selector and divertor units, as in a traditional tap changer, but these need not be in separate compartments. The scheme is shown and its operation is explained in detail. The constituent parts of the tap changer are also described. (5 pages)