Electrical Transmission and Substation Structures 2018
Evolution of Electrical Grid Seismic Resiliency
Publication: Electrical Transmission and Substation Structures 2018: Dedicated to Strengthening our Critical Infrastructure
ABSTRACT
This paper describes chronological mitigation efforts (before, during, and after) to the Southern California Edison (SCE) electrical grid (transmission, substation, and distribution system) after major earthquakes in Southern California. “Before the earthquake” describes the seismic standard and designs at that time. “During the earthquake” describes real time mitigation efforts to continue emergency power flow of the electrical grid even in the midst of chaos, and documents how the grid can operate during an emergency situation and help guide future methods of operation during emergency. “After the earthquake” illustrates how SCE and the industry changed seismic standards for the electrical grid, in the interest of increasing seismic resiliency, and summarizes actual mitigation. The history behind a lot of today’s (2018) utility specific seismic design practices for the electric grid are not typically published in the literature. This paper provides a historical perspective of how real-world earthquakes help shape industry codes, company standards, and emergency protocol.
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REFERENCES
Eidinger, J., Ostrom. D. (1994). “Earthquake Loss Estimation Methods, Electric Power Utilities.” Prepared for the National Institute of Building Sciences, <http://www.geengineeringsystems.com/ewExternalFiles/Electric_Power_Fragility.pdf> (June 1994).
Anagnos, T. (2001). “Development of an Electrical Substation Equipment Performance Database for Evaluation of Equipment Fragilities.” Pacific Earthquake Engineering Center, Report No. 2001-06 <http://www.engr.sjsu.edu/tanagnos/Substation/index.htm>.
Moran, D. F. (1971). Damage to Energy and Communication Systems. United States Government Printing Office, Washington, D.C.
IEEE (The Institute of Electrical and Electronics Engineers, Inc.). (1997) IEEE Recommended Practices for Seismic Design of Substations, IEEE Standard 693TM-1997. IEEE, New York, NY.
IEEE (The Institute of Electrical and Electronics Engineers, Inc.). (2005) IEEE Recommended Practices for Seismic Design of Substations, IEEE Standard 693TM-2005. IEEE, New York, NY.
IEEE (The Institute of Electrical and Electronics Engineers, Inc.). (2006) IEEE Recommended Practice for the Design of Flexible Buswork Located in Seismically Active Areas, IEEE Standard 1527TM-2006. IEEE, New York, NY.
Information & Authors
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Published In
Electrical Transmission and Substation Structures 2018: Dedicated to Strengthening our Critical Infrastructure
Pages: 209 - 218
Editor: Michael Miller, SAE Towers
ISBN (Online): 978-0-7844-8183-7
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Nov 1, 2018
Published in print: Nov 1, 2018
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