Seismic Response of Electrical Substation Equipment Interconnected by Flexible Conductors
Publication: Journal of Structural Engineering
Volume 130, Issue 5
Abstract
In this paper we investigate experimentally the dynamic interaction between components of electrical substation equipment interconnected by flexible (cable) conductors. Shake table tests were conducted on five different pairs of generic substation equipment specimens interconnected by three different flexible conductors with three different levels of slackness. No damage to any of the three flexible conductors was observed during any of the seismic tests conducted. Two different types of dynamic response were observed during the seismic tests. The first type involves low interaction between the interconnected equipment due to a large slack and/or low intensity ground motion. For this case, very different frequency contents among the relative displacement, absolute acceleration, and force response of each piece of equipment were observed. Also, large horizontal movement of the more flexible equipment was transferred almost entirely into vertical motion of the conductor with little transmission to the more rigid equipment. The second type of dynamic response involves high interaction between interconnected equipment due to a small slack and/or high intensity ground motion. For this case, large vertical acceleration pulses were observed at midspan of the conductor.
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References
Benuska, L., and technical ed. (1990). “Loma Prieta earthquake reconnaissance report.” Earthquake Spectra, Suppl., 6, 207–216.
Clough, R. W., and Penzien, J. (1993). Dynamics of structures, 2nd Ed., McGraw–Hill, New York.
Dastous, J. B. (2002). “Prediction of bound values on the expected relative displacement between substation equipment during an earthquake.” IREQ Rep. No. XXX, Hydro-Quebec/IREQ, Varennes, Que., Canada.
Dastous, J. P., and Pierre, J. R.(1996). “Experimental investigation of the dynamic behavior of flexible conductors between substation equipment during an earthquake.” IEEE Trans. Power Equip.,11(2), 801–807.
Der Kiureghian, A., Sackman, J. L., and Hong, K. J. (1999). “Interaction in interconnected electrical substation equipment subjected to earthquake ground motions.” Rep. No. PEER 1999/01, Pacific Earthquake Engineering Research Center, Univ. of California, Berkeley, Berkeley, Calif.
Experimental Dynamic Investigations. (1993). U2 & V2 manual, Vancouver, Canada.
Filiatrault, A., and Kremmidas, S.(2000). “Seismic interaction of interconnected electrical substation equipment.” J. Struct. Eng., 126(10), 1140–1149.
Filiatrault, A., and Stearns (2002). “Electrical substation equipment interaction—Experimental flexible conductor studies.” Structural Systems Res. Project Rep. No. SSRP-02/09, Dept. of Structural Engineering, Univ. of California, San Diego, La Jolla, Calif.
Filiatrault, A., Kremmidas, S., Elgamal, A., and Seible, F. (1999). “Substation equipment interaction—Rigid and flexible conductor studies.” Structural Systems Research Project Rep. No. SSRP-99/09, Dept. of Structural Engineering, Univ. of California, San Diego, La Jolla, Calif.
Filiatrault, A., Kremmidas, S., Seible, F., Clark, A. J., Nowak, R., and Thoen, B. K. (2000). “Upgrade of first generation uniaxial seismic simulation system with second generation real-time three-variable digital control system.” Proc., 12th World Conf. on Earthquake Engineering, New Zealand Society for Earthquake Engineering, Upper Hutt, New Zealand.
Ghalibafian, H. (2001). “An experimental study on the seismic interaction of flexible conductors with electrical substation equipment.” MS thesis, Dept. of Civil Engineering, Univ. of British Columbia, Vancouver, B.C., Canada.
Hall, J., and technical ed. (1995). “Northridge earthquake of January 17, 1994 Reconnaissance Report.” Earthquake Spectra, Suppl., 1, 188–214.
Institute of Electrical and Electronics Engineers (IEEE). (1997). “Recommended practices for seismic design of substations.” IEEE-693, IEEE Standards Dept., Piscataway, N.J.
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Copyright © 2004 American Society of Civil Engineers.
History
Received: Jan 7, 2003
Accepted: May 8, 2003
Published online: Apr 15, 2004
Published in print: May 2004
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