Innovative Solutions for Partial Discharge Measurements

  • Sergey A. GOLUBTSOV
  • Roberto CANDELA
Keywords: partial discharges, insulation damage, monitoring, broadband sensor, cable line, pulse, portable device, sensor-antenna, predictive diagnostics, spherical monopole, non-destructive test

Abstract

The article discusses systems developed using an innovative approach to measuring partial discharges, their advantages over traditional methods of monitoring cable lines and electrical equipment, as well as the principles of their operation. The design of the systems is based on a special broadband sensor-antenna which provides remote recording of both partial discharge pulses and the phase of alternating current flowing in the object of measurement without taking the equipment under test out of operation. Due to the wireless nature and system compact dimensions, partial discharge measurements can perform in previously inaccessible conditions, significantly expanding the capabilities of this diagnostic method. The partial discharge measurements are an up-to-date method for predictive diagnostics of cable systems and are necessary for the condition-based maintenance.

Author Biographies

Sergey A. GOLUBTSOV

(Prysmian Electronics Srl, Milan, Italy) – Technical sales manager, MSc. Applied Mechanics. Sergey Golubtsov graduated from the Faculty of Physics and Technology of Tomsk State University. In 2013 he joined the Prysmian Group in Russia. He worked in the departments of production, sales and R&D. He currently works in the technical sales division of Prysmian Electronics in Italy.

Roberto CANDELA

(Prysmian Electronics Srl, Palermo, Italy) – CEO, Dr. Sci. (Eng). Roberto Candela (1970) received the Doctor’s degree in Electrical Engineering from the University of Palermo, Italy, in 1996. In 2006 he develops and patents a new sensor for measuring partial discharges in wireless mode that is on the base of Pry-Cam product range. Starting from 2012 he is CEO of Prysmian Electronics, a company of Prysmian group, responsible worldwide for energy asset management systems.

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#
1. Vdoviko V. Partial discharges in diagnostics of high-voltage equipment. Novosibirsk: Nauka, 2007, 155 p.
2. Power transformers. Reference book / Under ed. S.D. Lizunov, A.K. Lokhanin. M.: Energoizdat, 2004, 616 p.
3. IEС 60270:2000 High-voltage test techniques – Partial discharge measurements, 2000.
4. Smit J.J., Gulski E., Wester F.J. Economical and technical aspects of advanced PD diagnostics to support condition-based maintenance of HV assets. – Transmission and Distribution Conference and Exhibition 2002, Asia Pacific, 2002, vol. 2, pp. 1110–1115, DOI:10.1109/TDC.2002.1177633.
5. Gulski E. Digital Analysis of Partial Discharges. – IEEE Transactions on Dielectrics and Electrical Insulation, 1995, vol. 2, No. 5, pp. 822–837.
6. Montanari G.C. Diagnostics of electrical systems: expectations and answers. – 2007 International Conference on Solid Dielectrics, Winchester, UK, 2007, DOI:10.1109/ICSD.2007.4290868.
7. Zhenquan S., et al. Measurements, diagnostics and monitoring of partial discharges on high-voltage equipment on-line and off-line. – 4th IEEE Conference on Industrial Electronics and Applications, 2009, pp. 1521–1526.
8. Moronis A.X., et al. Electronic phenomena in solid dielectrics under high electric fields. – Proceedings of the IEEE International Symposium on Industrial Electronics, 1995, vol. 2, pp. 919–923.
9. Lopez-Roldan J., Tang T., Gaskin M. Optimization of a sensor for onsite detection of partial discharges in power transformers by the UHF method. – IEEE Transactions on Dielectrics and Electrical Insulation, 2008, vol. 15, iss. 6, pp. 1634–1639.
10. Lopez-Roldan J., Tang T., Gaskin M. Design and testing of UHF sensors for partial discharge detection in transformers. – International Conference on Condition Monitoring and Diagnosis, 2008, pp. 1052–1055, DOI:10.1109/CMD.2008.4580463.
11. Petchphung P., et al. The study of disc monopole antenna for partial discharge measurement. – International Power Engineering Conference, 2007, pp. 1292–1296.
12. Pat. EP2297589 / WO2009150627. Portable Partial Discharge Detection Device / A. Di Stefano, et al., 2009.
13. Candela R., et al. A Novel Partial Discharge Detection System Based on Wireless Technology. – AEIT Annual Conference, 2013, DOI:10.1109/AEIT.2013.6666803.
14. Candela R., Di Stefano A., Valentini M. PD measurements with Pry-Cam Portable, 2014, 18 p.
15. IEC 62067. Power cables with extruded insulation and accessories for operating voltages above 150 kV (Um = 170 kV) up to 500 kV (Um = 550 kV) – Test methods and requirements, 2011-11.
16. IEC 60840. Power cables with extruded insulation and accessories for operating voltages above 30 kV (Um = 36 kV) up to 150 kV (Um = 170 kV) – Test methods and requirements, 2004-04.
17. Candela R., Di Stefano A., Valentini M. Pry-Cam Grids Partial Discharge Monitoring – general description, July 08, 2014, pp. 7–15.
18. Cost of Hourly Downtime Soars: 81% of Enterprises Say it Exceeds $300K оn Average [Electron. Resource], URL: https://itic-corp.com (Date of Appeal: 02.08.2021).
19. Maintaining Virtual System Uptime in Today's Transforming IT Infrastructure [Electron. Resource], URL: https://www.aberdeen.com (Date of Appeal: 02.08.2021).
20. The Impact of Digital on Unplanned Downtime [Electron. Resource], URL: https://www.ge.com (Date of Appeal: 02.08.2021).
Published
2021-06-23
Section
Article