Electric power substation systems are critical facilities as lifeline systems for sustaining society from earthquake events. The composite hollow core electrical post insulators are important parts of the electrical substations equipment and their failure may have consequences to the local network and to the entire grid. In this study, a macroscopic analytical model is developed, which consists of gravity mass, two linear springs, viscous damping, and friction characteristics. The macroscopic model is formulated with high order differential equations derived with a state-space form solved by using Runge-Kutta method. Several prototype insulators have been tested at the University at Buffalo and the developed models are verified through comparing with the test results. The comparisons of acceleration and displacement responses are conducted and show good agreements.
Modeling combined friction-viscous damping in response of hollow core composite insulators / Cimellaro, GIAN PAOLO; Roh, H.; Fahad, M.; Reinhorn, A. M.; Shiff, A.. - (2010), pp. 2736-2747. (Intervento presentato al convegno Structures Congress 2010 tenutosi a Orlando, Florida (USA) nel May 12-15, 2010) [10.1061/41130(369)247].
Modeling combined friction-viscous damping in response of hollow core composite insulators
CIMELLARO, GIAN PAOLO;
2010
Abstract
Electric power substation systems are critical facilities as lifeline systems for sustaining society from earthquake events. The composite hollow core electrical post insulators are important parts of the electrical substations equipment and their failure may have consequences to the local network and to the entire grid. In this study, a macroscopic analytical model is developed, which consists of gravity mass, two linear springs, viscous damping, and friction characteristics. The macroscopic model is formulated with high order differential equations derived with a state-space form solved by using Runge-Kutta method. Several prototype insulators have been tested at the University at Buffalo and the developed models are verified through comparing with the test results. The comparisons of acceleration and displacement responses are conducted and show good agreements.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2291621
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