DocumentCode :
2520241
Title :
The influence of square voltage waveforms on transformer insulation break down voltage
Author :
Koltunowicz, Tomasz ; Cavallini, Andrea ; Djairam, Dhiradj ; Montanari, Gian Carlo ; Smit, Johan
Author_Institution :
High Voltage Technol. & Manage., Delft Univ. of Technol., Delft, Netherlands
fYear :
2011
fDate :
16-19 Oct. 2011
Firstpage :
48
Lastpage :
51
Abstract :
The use of Voltage Source Converters (VSCs) in HVDC transmission and, more generally, in flexible AC transmission systems (FACTS), raises concerns over the endurance of turn/turn insulation of grid/converter interface transformers. In this paper, tests performed on oil-impregnated paper specimens are discussed. The results indicate clearly that shorter rise times and higher repetition frequencies have a strong impact on both partial discharge inception voltage and breakdown voltage. These results suggest that deeper investigation might be important to understand the long term behavior of these insulation systems.
Keywords :
HVDC power transmission; flexible AC transmission systems; power transformer insulation; FACTS; HVDC transmission; breakdown voltage; flexible AC transmission systems; grid/converter interface transformers; insulation systems; oil-impregnated paper specimens; partial discharge inception voltage; square voltage waveforms; transformer insulation break down voltage; turn/turn insulation; voltage source converters; Oil insulation; Partial discharges; Power transformer insulation; Surges; Time frequency analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena (CEIDP), 2011 Annual Report Conference on
Conference_Location :
Cancun
ISSN :
0084-9162
Print_ISBN :
978-1-4577-0985-2
Type :
conf
DOI :
10.1109/CEIDP.2011.6232593
Filename :
6232593
Link To Document :
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