Prefluxing Technique to Mitigate Inrush Current of trasformer
Romit R. Nandha
, Prof. Sachin Rajani
Controlled switching, Inrush current, MATLAB, Prefluxing, transformer, transient, point on wave switch
At the time of transformer energization, a high current will be drawn by the transformer. This current is called transient inrush current and it may rise to ten times the nominal full load current of transformer during operation. Energization transient can produce mechan-ical stress in the transformer causes protection system mal-function. This current often affects the power system quality and may disrupt the operation of sensitive electrical loads such as computer and medical equipment connected to the system. Reduction and the way to control ener-gization transient currents have become important concerns to the power industry. Conventionally, controlled switching or point on wave switching was the method being used to counter the problem, but this method requires the knowledge of residual fluxes of transformer before energization, which was quite tedious to get. Hence, this paper proposes a technique to mitigate inrush current in three phase transformers which involves injecting some amount of DC flux in the primary of transformer, the process known as prefluxing. After setting the initial fluxes of the transformer it is energized by conventional controlled switching. To verify the efficientness of the proposed prefluxing method to miti-gate inrush current for power transformer, a MATLAB simulation model is designed and developed. The results are verified using the sample in which transformer is connect with a supply source, which have conformed the efficient inrush current control.
" Prefluxing Technique to Mitigate Inrush Current of trasformer ", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.1, Issue 5, page no.356 - 360, May-2016, Available :https://ijsdr.org/papers/IJSDR1605069.pdf
Volume 1
Issue 5,
May-2016
Pages : 356 - 360
Paper Reg. ID: IJSDR_160330
Published Paper Id: IJSDR1605069
Downloads: 000347068
Research Area: Engineering
Country: rajkot, gujarat, India
ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
Publisher: IJSDR(IJ Publication) Janvi Wave
