The Investigation of Insulation Performance Evaluation of the Large Electrical Rotating Machine in Frequency Domain

Authors

  • Nattawut Phloymuk Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand https://orcid.org/0000-0002-5085-0973
  • Masaaki Kando Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand
  • Norasage Pattanadech Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand https://orcid.org/0000-0002-3897-1895

DOI:

https://doi.org/10.13052/jmm1550-4646.1544

Keywords:

Condition monitoring, Polarization and depolarization current, Complex capacitance, Polarization losses, Frequency domain

Abstract

The insulation structure of winding in a large electrical rotating machine consists of epoxy resin and mica material. The insulation structure is composed of many junctions. The insulation problems generate different kinds of signals, such as electromagnetic waves, which may get released from the non-perfect characteristics of the enclosure. This signal may interfere with the functioning of other nearby electronic devices. Therefore, maintaining an excellent condition of the insulation system of the machine is very important. For a condition monitoring of this insulation as proposed in this research, it is taken into consideration the results of the polarization and depolarization current (PDC) measurement of the test sample, and the stator winding rated 13.8 kV was investigated. The experiments were conducted under different thermal stresses, i.e., 25°C (the room temperature) and 100°C (the operation temperature). The test samples were divided into three types: I. haft-overhang, II. overhang and III. full stator bar. From the PDC measurement data record, the complex capacitance and polarization losses (ion migration polarization, slow relaxation polarization and interfacial polarization) were calculated. It was found that the aging of the insulation related to the complex capacitance and polarization losses can be contributed for research in future wireless technology.

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Author Biographies

Nattawut Phloymuk, Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand

Natthawut Phloymuk was born June 7, 1985. He graduated electrical engineering from the King Mongkut’s University of Technology North Bangkok. His employment experience ABB company, General Electric Company (GE) and Siemens Company. His special field of large machinery (motor, generator, wind turbine and gas turbine system). He is interest in research field of high voltage insulation characteristics and condition monitoring of large rotating machine. Currently, he is Ph.D. student at the Electrical Engineering Department, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand.

Masaaki Kando, Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand

Masaaki Kando (Fellow IEEJ, Life member IEEE) graduated from the Tokai University, Japan with M.Eng. degree in 1973. He joined the academic staff as an assistant professor of the Department of Electrical Engineering, Tokai University in 1973, lecturer in 1978, associate professor in 1985 and professor in 1992. He was awarded the Doctor of Engineer degree by the Nagoya University in 1991. He received the title of professor emeritus from the Tokai University in 2011. He is also an IEEE Life Member, IEEJ Fellow and IEEJ Life Member in 2014. He supported Malaysia – Japan Higher Education Program as an expert and lecturer under Malaysia Government, and other Asian universities (Thailand, Cambodia and Laos) in high-voltage engineering. Currently, he is a visiting professor of the KMITL in Thailand.

Norasage Pattanadech, Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand

Norasage Pattanadech received his B.Eng and M.Eng degrees in electrical engineering from the King Mongkut’s Institute of Technology Ladkrabang in 1998 and Chulalongkom University, Thailand in 2002, respectively. He is also awarded a Ph.D. degree by the Institute of High Voltage Engineering and System Management, Graz University of Technology, Austria in 2013. Currently, he works as an associate professor at the King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand. His research activities have been mainly involved in partial discharge in insulating liquid, solid insulator characteristics and high-voltage testing.

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Published

2020-07-27

How to Cite

Phloymuk, N., Kando, M., & Pattanadech, N. (2020). The Investigation of Insulation Performance Evaluation of the Large Electrical Rotating Machine in Frequency Domain. Journal of Mobile Multimedia, 15(4), 339–356. https://doi.org/10.13052/jmm1550-4646.1544

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Section

Smart Innovative Technology for Future Industry and Multimedia Applications

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