An Investigation on Seismic Behavior of Three Interconnected Pieces of Substation Equipment

High-voltage electrical substations are used to distribute power between residential, industrial, commercial, and agricultural regions. Previous earthquakes have shown that electrical substations are seismically vulnerable. Although equipment of these substations had been designed individually accor...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2014-08, Vol.29 (4), p.1613-1620
Main Authors: Karami Mohammadi, R., Pourkashani Tehrani, A.
Format: Article
Language:English
Subjects:
Applied sciences
Conductor slack
Conductors
Dynamic tests
Dynamics
earthquake
Earthquakes
Electric power generation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electricity distribution
Exact sciences and technology
Failure
failure probability
incremental dynamic analysis (IDA)
Insulators
interaction
Load modeling
Numerical models
Power networks and lines
Power system dynamics
Seismic phenomena
Seismic response
Substations
Various equipment and components
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Summary:High-voltage electrical substations are used to distribute power between residential, industrial, commercial, and agricultural regions. Previous earthquakes have shown that electrical substations are seismically vulnerable. Although equipment of these substations had been designed individually according to the electrical and seismic requirements, they have shown poor seismic performance resulting from interaction problems. In recent decades, some research has been done on the effects of interaction between substation equipment items, which are connected by flexible or rigid conductors. Although more than two items are usually connected to each other, only two items are assumed in most studies. In this paper, the effects of interaction between three interconnected items are investigated using incremental dynamic analyses. Two failure modes are considered, including failure of insulators and disconnection of conductors. The results are presented in terms of maximum sustainable ground motion acceleration and failure probability, and discussions are made to choose the best pair of interconnected items.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2013.2289365