Selecting the Parameters of The Diagnosis of Frame Insulation Condition in Electrical Machines of Locomotives

  • Authors

    • Michail Kapitsa
    • Vasiliy Laguta
    • Yuriy Kozik
    2018-09-15
    https://doi.org/10.14419/ijet.v7i4.3.19718
  • Absorption Current, Electrical Machine, Frame Insulation, Insulation Ageing, Return Voltage.

  • The purpose of this study is to determine the signs displaying the insulation ageing process and allow predicting the change in its technical condition under operation of traction motors in locomotives. In order to choose the indicators of the insulation condition, the methods of linear electrical circuits were used to analyze the equivalent scheme of frame insulation. In the equivalent scheme, the dielectric micro- and macro-heterogeneities were taken into account. The most informative parameters of the frame insulation ageing process are those related to absorption and resorption processes over time. The return voltage has been selected as the main characteristic to determine the indicators of insulation condition. The analytical dependences for determining the frame insulation condition indicators have been obtained different from those currently used in the diagnosis of electrical machines. The choice of indicators will allow predicting changes in the technical condition of frame insulation in operation. The studies will allow us to change the regular preventive maintenance technology to the maintenance based on the facility condition.

     

     

  • References

    1. [1] Rusu-Zagar C, Notingher PV, Stancu C, “Ageing and degradation of electrical machines insulationâ€, Journal of International Scientific Publications: Materials, Methods and Technologies, Vol. 8, (2014). pp. 526-546, available onine: http://www.scientific-publications.net, last visit: 20.11.2017

      [2] Rusu-Zagar, C, Notingher, PV, Navrapescu V, Mares G, Rusu-Zagar G, Setnescu T & Setnescu R, “Method for Estimating the Duration of Life Insulation of Electric Motorsâ€, Proceedings of 8th International Symposium on Advanced Topics in Electrical Engineering, Vol. 3, (2013), pp. 1-6.

      [3] IEC 60505 Ed. 4.0 b:2011. Evaluation and qualification of electrical insulation systems. International Electrotechnical Commission. pp. 9-31.

      [4] Kapitsa MI, “Development of scientific base for improving the systems of traction rolling stock operationâ€, Thesis for a degree of Dr. Sci. in Engineering, Dnipropetrovsk, (2010), pp. 168-224

      [5] Privalov EE, Diagnostics of external insulation of electrical equipment: tutorial, Direct Media, (2015), pp. 32-40

      [6] Lachin VI, Solomentsev KYu, Chi NQ, “Influence of absorption currents on the measurement of insulation resistanceâ€, Proceedings of XIII International Scientific and Practical Conference, Novocherkassk, April 23, (2013), pp. 31-33

      [7] Patsch R, Kamenka D, Menzel J, “Return voltage measurements. Diagnostic interpretations based on the dielectric time constantsâ€, Materials Science-Poland, Vol.27, No.4, (2009), p.1157-1169.

      [8] Kapitsa MI, Laguta VV, “Application of mathematical modeling to the estimation of the residual resource of electrical machine insulationâ€, Proceedings of International Scientific and Engineering Conference, Sevastopol, September 8–14, Vol. 3, (2003), pp: 279‑283

      [9] Gavrilă DE et al., "Applying the Recovery Voltage Method (RVM) to Study the Degradation of High Power Transformer Insulation", Advanced Materials Research, (2014), Vol. 911, pp. 260-265

      [10] Lachin VI, Solomentsev KYu, Chi NQ, “The influence of the absorption current on the process of measuring the insulation resistanceâ€, News of Higher Educational Institutions. North Caucasian Region. Engineering Sciences, No. 6, (2013), pp. 32-35

      [11] Sonel SA, Measurement of electrical insulation quality parameters. http://www.sonel.ru/ru/biblio/article/isolation/. Revised March 2012. Accessed June 26, 2018.

  • Downloads

  • How to Cite

    Kapitsa, M., Laguta, V., & Kozik, Y. (2018). Selecting the Parameters of The Diagnosis of Frame Insulation Condition in Electrical Machines of Locomotives. International Journal of Engineering & Technology, 7(4.3), 110-114. https://doi.org/10.14419/ijet.v7i4.3.19718