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18 August 2003 Performance analysis and visualization of electric power systems
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This paper describes a method of system performance evaluation for electric power network. The basic element that plays a crucial role here is the fragility information for transmission system equipment. The method utilizes the fragility information for evaluation of system performance degradation of LADWP's (Los Angeles Department of Water and Power's) power network damaged by a severe earthquake by comparing its performance before and after the earthquake event. One of the highlights of this paper is the use of computer code “PowerWorld” to visualize the state of power flow of the network, segment by segment. Similarly, the method can evaluate quantitatively the effect of various measures of rehabilitation or retrofit performed on equipment and/or facilities of the network. This is done by comparing the system performance with or without the rehabilitation. In this context, the results of experimental and analytical studies carried out by other researchers are used to determine the possible range of fragility enhancement associated with the rehabilitation of transformers in terms of base-isolation systems. In this analysis, 47 scenario earthquakes are used to develop the risk curves for the LADWP’s power transmission system. The risk curve can then be correlated to economic impact of the reduction in power supply due to earthquake. Recovery aspects of the damaged power system will be studied from this point of view in future.
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Xuejiang Dong and Masanobu Shinozuka "Performance analysis and visualization of electric power systems", Proc. SPIE 5057, Smart Structures and Materials 2003: Smart Systems and Nondestructive Evaluation for Civil Infrastructures, (18 August 2003);

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