DESIGN AND FABRICATION OF SYSTEM MEASURING DISSOLVED HYDROGEN GAS IN TRANSFORMER OIL

  • Nguyen Vu Thang Hung Yen University of Technology and Education
  • Nguyen Hoang Nam Hanoi University of Science and Technology
  • Hoang Van Phuoc Hanoi University of Science and Technology
  • Nguyen Van Dua Center for Microelectronics and Information Technology - Ministry of Science and Technology
  • Do Anh Tuan Hung Yen University of Technology and Education, HaNoi University of Technology
  • Hoang Si Hong Hung Yen University of Technology and Education
Keywords: dissolved hydrogen gas in transformer oil, model of dissolving system, main controller

Abstract

This paper works on system that monitors concentration of hydrogen dissolved in transformer oil. The system has a closed chamber that is used as a transformer oil container. Oil temperature in the chamber can be adjusted by controllable heater. Stirring motor and gas pressure part are also integrated to speed up the dissolution of hydrogen in oil and to observe gas pressure difference. In this research, group chooses voltage distribution method to determine the value of resistant of hydrogen sensor. Resistant value varies from hundreds of kΩ to 1MΩ. Micro control unit STM32 is utilized for collecting, processing measured data and transmitting to computer through RS232 port. The result shows that the system works stably. Consequently, experimenting sensors sensing hydrogen dissolved in transformer oil becomes less difficult because it is very hard to prepare experimental condition of real transformer.

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Published
2018-01-08
How to Cite
Nguyen Vu Thang, Nguyen Hoang Nam, Hoang Van Phuoc, Nguyen Van Dua, Do Anh Tuan, & Hoang Si Hong. (2018). DESIGN AND FABRICATION OF SYSTEM MEASURING DISSOLVED HYDROGEN GAS IN TRANSFORMER OIL. UTEHY Journal of Science and Technology, 16, 18-24. Retrieved from https://tapchi.utehy.edu.vn/index.php/jst/article/view/139