Title :
A new on-load tap changing system with power electronic elements for power transformers
Author :
Xiaoming, Li ; Qingfen, Liao ; Xianggen, Yin ; Jianghui, Xie
Author_Institution :
Dept. of Electr. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
In order to avoid the disadvantages of conventional mechanical tap changing system and its influence on power system, a new on-load tap changing system with power electronic elements for power transformers is presented in this paper. The system is composed of main circuit, signal detection and triggering circuit design, choice of the thyristor switching, protecting transformer from overvoltage both in case of switching on and switching off no-load transformer. It possesses the inherent attributes of greater efficiency and less maintenance.
Keywords :
on load tap changers; overvoltage protection; power transformer protection; signal detection; switching; thyristor applications; voltage control; main circuit; no-load transformer switching off; no-load transformer switching on; on-load tap changing system; overvoltage protection; power electronic elements; power transformers; signal detection; thyristor switching; transformer protection; triggering circuit design; voltage control; Contacts; Oil insulation; Power electronics; Power system protection; Power systems; Power transformers; Switches; Switching circuits; Thyristors; Voltage control;
Conference_Titel :
Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference on
Print_ISBN :
0-7803-7459-2
DOI :
10.1109/ICPST.2002.1053604
