Title :
Fast response GTO assisted novel tap changer
Author :
Jiang, Hao ; Shuttleworth, Roger ; Al Zahawi, Bashar A T ; Tian, Xiaolin ; Power, Andrew
Author_Institution :
Singapore Polytech., Singapore
fDate :
1/1/2001 12:00:00 AM
Abstract :
A new type of GTO thyristor assisted tap changer is outlined which addresses the problems of traditional schemes. The scheme minimizes conduction losses in the solid state devices and also permits a fast response speed through the adoption of fast actuator driven vacuum switches. This paper describes a prototype tap changer for a low voltage 300 kVA transformer using the new method of tap changing. The prototype operates at current levels similar to those at which a full scale tap changer would work. Test results are presented
Keywords :
electric actuators; losses; power transformers; thyristor applications; vacuum switches; 300 kVA; GTO thyristor assisted tap changer; conduction losses minimisation; fast actuator driven vacuum switches; fast response GTO assisted tap changer; solid state devices; transformer; Actuators; Circuit testing; Low voltage; Oil insulation; Petroleum; Power semiconductor switches; Power transformer insulation; Programmable control; Prototypes; Thyristors;
Journal_Title :
Power Delivery, IEEE Transactions on
