NDLI: Study on arcless switching experiments of hybrid on-load tap changer in transformers

Content Provider	IEEE Xplore Digital Library
Author	Gao Fei Zhang Shuqi Yan Kuo Li Jinzhong Zheng Shirui Ding Benping
Copyright Year	2014
Abstract	The arc of traditional on-load tap changer in transformer during swithing period can significantly reduce contact's lifetime and accelerate the deterioration of transformer oil in switching process. In order to solve the above problems, this paper proposes a new principle of hybrid on-load tap changer, and the trial of the laboratory prototype model, using telescopic movement moving contacts to ensure switching sequence, mechanical components to achieve passive trigger of thyristor modules, assisting machinery with thyristor to achieve extinction in the process of switching. Establish a standard low-voltage switching test circuit, switching tests were under resistive load and inductive load conditions. Experimental results show that the process of switching thyristor in a trigger would be four times, twice during the current zero crossing off the natural, and twice turned off by bypass of mechanical switch. Experimental results validate shows the effectiveness of the hybrid arcless on-load tap switching method.
Starting Page	1287
Ending Page	1292
File Size	864623
Page Count	6
File Format	PDF
ISBN	9781479950324
DOI	10.1109/POWERCON.2014.6993583
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thyristors Switches Switching circuits Contacts Oil insulation Resistance Logic gates switching experiment on-load tap changer model prototype thyristor modules passive trigger circuit of Extinction
Content Type	Text
Resource Type	Article

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