DOI QR코드

DOI QR Code

Effects of sheds and cemented joints on seismic modelling of cylindrical porcelain electrical equipment in substations

  • Li, Sheng (China Electric Power Research Institute) ;
  • Tsang, Hing-Ho (Department of Civil and Construction Engineering, Swinburne University of Technology) ;
  • Cheng, Yongfeng (China Electric Power Research Institute) ;
  • Lu, Zhicheng (China Electric Power Research Institute)
  • 투고 : 2015.07.07
  • 심사 : 2016.11.07
  • 발행 : 2017.01.25

초록

Earthquake resilience of substations is essential for reliable and sustainable service of electrical grids. The majority of substation equipment consists of cylindrical porcelain components, which are vulnerable to earthquake shakings due to the brittleness of porcelain material. Failure of porcelain equipment has been repeatedly observed in recent earthquakes. Hence, proper seismic modelling of porcelain equipment is important for various limit state checks in both product manufacturing stage and detailed substation design stage. Sheds on porcelain core and cemented joint between porcelain component and metal cap have significant effects on the dynamic properties of the equipment, however, such effects have not been adequately parameterized in existing design guidelines. This paper addresses this critical issue by developing a method for taking these two effects into account in seismic modelling based on numerical and analytical approaches. Equations for estimating the effects of sheds and cemented joint on flexural stiffness are derived, respectively, by regression analyses based on the results of 12 pieces of full-scale equipment in 500kV class or higher. The proposed modelling technique has further been validated by shaking table tests.

키워드

과제정보

연구 과제 주관 기관 : State Grid Corporation of China

참고문헌

  1. Dastous, J.B. (2007), "Guidelines for seismic design of flexible buswork between substation equipment", Earthq. Eng. Struct. Dyn., 36(2), 191-208. https://doi.org/10.1002/eqe.619
  2. Dastous, J.B., Filiatrault, A. and Pierre J.R. (2004), "Estimation of displacement at Interconnection points of substation equipment subjected to earthquakes", IEEE T. Power Deliver., 19(2), 618-627. https://doi.org/10.1109/TPWRD.2003.823203
  3. Fahad, M. (2013), "Seismic evaluation and qualification of transformer bushings", Ph.D. dissertation, The State University of New York at Buffalo, Buffalo.
  4. Filiatrault, A. and Matt, H. (2005), "Experimental seismic response of high-voltage transformer-bushing systems", Earthq. Spectra, 21(4), 1009-1025. https://doi.org/10.1193/1.2044820
  5. Filiatrault, A. and Stearns, C. (2002), "Electrical substation equipment interaction-experimental flexible conductor studies", University of California, San Diego, Structural Systems Research Project, Report No. SSRP-2002/09.
  6. Filiatrault, A. and Stearns, C. (2003), "An experimental study on the seismic response of electrical substation equipment interconnected by flexible conductors", Advancing Mitigation Technologies and Disaster Response for Lifeline Systems, 667-676. California, August.
  7. GB50556 (2010), Code for aseismic design of electrical facilities in industrial plants, Beijing. (in Chinese)
  8. GB50260 (2013), Code for design of seismic of electrical installations, Beijing. (in Chinese)
  9. Gilani, A.S.J. (2000), "Seismic evaluation and analysis of 230 kV disconnect switches", PEER Report 2000/06.
  10. Gilani, A.S., Whittaker, A.S., Fenves, G.L. and Fujisaki, E. (1999), "Seismic evaluation of 550 kV porcelain transformer bearings", PEER Report 1999/05.
  11. IEEE Standard 693 (2005), IEEE Recommended Practice for Seismic Design of Substations, New York.
  12. IEEE Standard 1527 (2006), IEEE Recommended Practice for the Design of Flexible Bus work Located in Seismically Active Areas, New York.
  13. JEAG5003 (2010), Guidelines for Seismic Design of Electrical Equipment in Substation, Tokyo. (in Japanese)
  14. Kiureghian, A.D., Sackman, J.L. and Hong, K.J. (2001), "Seismic interaction in linearly connected electrical substation equipment", Earthq. Eng. Struct. Dyn., 30(3), 327-347. https://doi.org/10.1002/eqe.9
  15. Kiureghian, A.D., Hong, K.J. and Sackman, J.L.(2000), "Further studies on seismic interaction in interconnected electrical substation squipment", PEER Report 2000/01.
  16. Kong, D. (2010), "Evaluation and protection of high voltage electrical equipment against severe shock and vibrations", Ph.D. dissertation, The State University of New York at Buffalo, Buffalo.
  17. Liu R., Zhang M., Wu Y., Liu Y., Lin J. and Guo E. (2010), "Damage and failure study of Sicuan electric power grid in Wenchuan Earthquake", J. Basic Sci. Eng., 18, 200-211. (in Chinese)
  18. Mohammadi, R.K., Akrami, V. and Nikfar, F. (2012), "Dynamic properties of substation support structures", J. Constr. Steel Res., 78, 173-182. https://doi.org/10.1016/j.jcsr.2012.06.016
  19. Mohammadi, R.K. (2013), "An improvement to seismic design of substation support structures", Struct. Eng. Mech., 45(6), 821-835. https://doi.org/10.12989/sem.2013.45.6.821
  20. Paolacci, F. and Giannini, R. (2009), "Seismic reliability assessment of a high-voltage disconnect switch using an effective fragility analysis", J. Earthq. Eng., 13(2), 217-235. https://doi.org/10.1080/13632460802347448
  21. Song, J., Kiureghian, A.D. and Sackman, J.L. (2007), "Seismic interaction in electrical substation equipment connected by non-linear rigid bus conductors", Earthq. Eng. Struct. Dyn., 36(2), 167-190. https://doi.org/10.1002/eqe.620
  22. Takhirov, S.M., Fenves, G.L. and Fujisaki, E. (2004), "Seismic qualification and fragility testing of line break 550-kV disconnect switches", PEER Report 2004/08.
  23. Whittaker, A.S., Fenves, G.L. and Gilani, A.S.J. (2007), "Seismic evaluation and analysis of high-voltage substation disconnect switches", Eng. Struct., 29(12), 3538-3549. https://doi.org/10.1016/j.engstruct.2007.07.028
  24. Whittaker, A.S., Fenves, G.L. and Gilani, A.S.J. (2004), "Earthquake performance of porcelain transformer bushings", Earthq. Spectra, 20(1), 205-223. https://doi.org/10.1193/1.1647578
  25. Xie, Q. (2013), "Field Investigation on Damage of Substation Equipment in Wenchuan Earthquake, May 12, 2008", Workshop on Electric System Earthquake Engineering, California, Berkeley.
  26. You, H. and Zhao, F. (2013), "M7.0 Earthquake in Lushan and Damage Cause Analysis of Power Facilities", Electric Power Construction, 34(8), 100-104. (in Chinese)
  27. Yu, Y., Li, G. and Li, P. (2008), "Investigation and analysis of electric equipment damage in sichuan power grid caused by Wenchuan earthquake", Power Syst. Technol., 32(11), 1-6. (in Chinese)

피인용 문헌

  1. Considering seismic interaction effects in designing steel supporting structure for surge arrester vol.132, 2017, https://doi.org/10.1016/j.jcsr.2017.01.012
  2. Study on Seismic Performance of Porcelain Pillar Electrical Equipment Based on Nonlinear Dynamic Theory vol.2021, pp.None, 2017, https://doi.org/10.1155/2021/8816322
  3. Research on Seismic Performance of Switches with Different Types of Supporting Structure vol.719, pp.4, 2021, https://doi.org/10.1088/1755-1315/719/4/042012