Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

access icon free Partial discharge detection by extracting UHF signal from inner grading electrode of insulating spacer in GIS

In this study, a novel ultra-high frequency (UHF) sensor using an inner grading electrode inside an insulting spacer is employed to detect gas-insulated switchgear (GIS) partial discharge (PD). The simulation of the waveguide modes of the 252 kV GIS and the frequency response characteristics of this UHF sensor are performed by using the finite difference time domain (FDTD) method. Three kinds of typical defects are employed to investigate the PD detection characteristics of this UHF sensor. It is shown that the resonance frequencies of this sensor are extremely abundant below 3 GHz, and the major resonance frequencies around 0.5–1.2 and 2.2–3 GHz. The phase-resolved PD (PRPD) images accumulated by using this UHF sensor present the typical PRPD images of defects. The main frequency spectrum of the metal protrusion on a high-voltage conductor and floating potential defects are distributed below 1.5 GHz, which is consistent with waveguide mode simulation. A resonance frequency of a grading electrode UHF sensor appears at about 115 MHz, which is close to the simulation value of a resonance frequency at 140 MHz. The PD detection sensitivity of this sensor is much higher than that of an external sensor; however, it is a little lower than that of an internal sensor.

References

    1. 1)
      • 17. Reid, A.J., Stewart, M., Judd, M.D.: ‘FDTD modeling of UHF partial discharge sensor response’. Proc. Int. Conf. On Sustainable Power Generation and Supply, Nanjing, China, 2009, pp. 14.
    2. 2)
      • 16. Balanis, C.A.: ‘Antenna theory, analysis and design’ (Wiley Publication, 2005), pp. 231275.
    3. 3)
      • 6. Judd, M.D., Farish, O., Hampton, B.F.: ‘The excitation of UHF signal by partial discharge in GIS’, IEEE Trans. Dielectr. Electr. Insul., 1996, 3, (2), pp. 213228.
    4. 4)
      • 2. Kaneko, S., Okabe, S., Muto, H., et al: ‘Electromagnetic wave radiated from an insulating spacer in gas insulated switchgear with partial discharge detection’, IEEE Trans. Dielectr. Electr. Insul., 2009, 16, (1), pp. 6068.
    5. 5)
      • 8. Okabe, S., Yuasa, S., Kaneko, S., et al: ‘Simulation of propagation characteristics of higher order mode electromagnetic waves in GIS’, IEEE Trans. Dielectr. Electr. Insul., 2006, 13, (4), pp. 855861.
    6. 6)
      • 7. Judd, M.D., Farish, O., Coventry, P.F.: ‘UHF couplers for GIS - sensitivity and specification’. Proc. 10th Int. Symposium on High Voltage Engineering, Montreal, Canada, 1997.
    7. 7)
      • 19. Raizer, Y.P.: ‘Gas discharge physics’ (Springer-Verlag, Berlin, Heidelberg, 1991).
    8. 8)
      • 1. Hikita, M., Ohtsuka, S., Teshima, T., et al: ‘Examination of electromagnetic mode propagation characteristic in straight and L-section GIS model using FD-TD analysis’, IEEE Trans. Dielectr. Electr. Insul., 2007, 14, (6), pp. 30953102.
    9. 9)
      • 12. Hikita, M., Ohtsuka, S., Teshima, T., et al: ‘Electromagnetic (EM) wave characteristics in GIS and measuring the EM wave leakage at the spacer aperture for partial discharge diagnosis’, IEEE Trans. Dielectr. Electr. Insul., 2007, 14, (2), pp. 453460.
    10. 10)
      • 10. Kaneko, S., Okabe, S., Muto, H., et al: ‘Detecting characteristics of various type antennas on partial discharge electromagnetic wave radiating through insulating spacer in gas insulated switchgear’, IEEE Trans. Dielectr. Electr. Insul., 2009, 16, (5), pp. 14621472.
    11. 11)
      • 14. Reid, A.J., Judd, M.D., Stewart, B.G., et al: ‘Partial discharge current pulses in SF6 and the effect of superposition of their radiometric measurement’, J. Phys. D. Appl. Phys., 2012, 39, (19), pp. 41674177.
    12. 12)
      • 13. Neumann, C., Krampe, B., Feger, R., et al: ‘PD measurements on GIS of different designs by non-conventional UHF sensors’. Proc. Session 2000 of CIGRE, Paris, France, 2000, pp. 19.
    13. 13)
      • 18. Judd, M.D., Farish, O.: ‘A pulsed GTEM system for UHF sensor calibration’, IEEE Trans. Instrum. Meas., 1998, 47, (4), pp. 875880.
    14. 14)
      • 9. Hoshino, T., Kato, K., Hayakawa, N., et al: ‘Frequency characteristics of electromagnetic wave radiated from GIS apertures’, IEEE Trans. Power Deliv., 2001, 16, (4), pp. 552557.
    15. 15)
      • 5. Kawada, M.: ‘Fundamental study on locating partial discharge source using VHF-UHF radio interferometer system’, Electr. Eng. Jpn., 2003, 144, (1), pp. 3241.
    16. 16)
      • 11. Meijer, S., Smit, J.J.: ‘UHF defect evaluation in gas insulated equipment’, IEEE Trans. Dielectr. Electr. Insul., 2005, 12, (2), pp. 285296.
    17. 17)
      • 3. Onomoto, M., Kunitake, Y., Ohtsuka, S., et al: ‘Motion and size estimation of a free moving metallic particle in GIS based on propagation properties of acoustic waves’, Electr. Eng. Jpn., 2005, 150, (1), pp. 2633.
    18. 18)
      • 4. Lundgaard, L.E.: ‘Partial discharge-part XIV: acoustic partial discharge detection-practical application’, IEEE Electr. Insul. Mag., 1992, 8, (5), pp. 3443.
    19. 19)
      • 15. Taflove, A., Susan, C: ‘Computational electrodynamics: the finite-Difference time-domain method’ (Artech House Publishers, 2005), pp. 629630.
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-smt.2016.0419
Loading

Related content

content/journals/10.1049/iet-smt.2016.0419
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address