INSTRUMENT OF VOLTAGE RATIO AND CHECK OF PHASE DISPLACEMENT

Authors

  • Boonlert Suechoey Department of Electrical Engineering, Faculty of Engineering, Southeast Asia University.
  • Panya Maleewat Department of Electronics Engineering and Telecommunication, Faculty of Engineering, Southeast Asia University.
  • Vichai Saelee Department of Electrical Engineering, Faculty of Engineering, Southeast Asia University.

Keywords:

Voltage ratio, Vector group, 3 - Phase distribution transformer

Abstract

This paper presents an instrument for measuring voltage ratios and testing of phase displacement of 1-phase and 3-phase distribution transformers. Two tests of the measurement included the voltage ratio between the primary to the secondary windings and the connections of phase displacement (vector group) of the 3-phase distribution transformer, according to the PEA standard (vector group Dyn11). The first testing was conducted by measuring the voltage levels at the primary and secondary sides which were converted into AC/DC voltage signals and adjusted to maintain a desired level for a digital conversion. The obtained digital signal was sent to a microcontroller to process the voltage ratio levels between the primary and secondary sides. The second testing was carried out by converting the electrical phase signals between the primary and secondary sides into the digital signals. The output signals of each phase were sent to a microcontroller to process the phase difference of vector group signals. The results from the tests were shown on an LCD monitor, which were accurate in compliance with the manufacturing company and testing standards.

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References

Chawarat Kengthamkij. (2003). Optimal Cost Design of Distribution Transformers Using Genetic Algorithms. M.Eng. (Electrical Engineering). Graduate School, King Mongkut Institute of Technology Ladkrabang.

Vichai Saelee. (2009). Losses Prediction in the Three Phase Distribution Transformer Using Neural Networks. M.Eng. (Electrical Engineering). Faculty of Engineering, Rajamangala University of Technology Thanyaburi.

Vichai Saelee, Chirasak Sinsukudomchai, & Prapapan Khluabwannarat. (2012). Losses Prediction in the Distribution Transformer Using Hierarchy Neural Networks. Journal of International Council on Electrical Engineering, 2(3), 384-390.

Sawai Thanipanichkul. (2005). Transformer. Bangkok: Funny Publishing.

Thai Engineering Institute of Thailand Under H.M. The King’s Patronage. (2013). Electrical Installation Standards for Thailand. Bangkok.

Boonlert Suechoey. (2015). Design and Usability of Distribution Transformer. 5th ed. Bangkok: Saroj Printing.

Thai Industrial Standards Institute. (2000). TIS 384-2543 Transformer. Bangkok: Ministry of Industry.

International Electrotechnical Commission. (2006). IEC 60076-1 Power Transformer Part 1 : General. Geneva.

Provincial Electricity Authority Thailand (PEA). (2015). Three-PhaseTtransformer for 22 kV and 33 kV Distribution Systems with Ability to Withstand Short Circuit. Specification No. RTRN-035/2558.

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Published

2021-12-30

How to Cite

Suechoey, B. ., Maleewat, P. ., & Saelee, V. . (2021). INSTRUMENT OF VOLTAGE RATIO AND CHECK OF PHASE DISPLACEMENT. Srinakharinwirot University Journal of Sciences and Technology, 13(26, July-December), 48–59. Retrieved from https://ph02.tci-thaijo.org/index.php/swujournal/article/view/246228

Issue

Vol. 13 No. 26, July-December (2021): Srinakharinwirot University (Journal of Science and Technology)

Section

บทความวิจัย

License

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