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Many voltage stability indicators have been proposed in the past for the voltage collapse assessment. Almost all of them are determined through quite complex analytical tools; therefore, it is difficult for system operators to give them a physical meaning. In order to perform a simple and reliable evaluation of the security margins, it is necessary to make a synthesis of the information given by the...
In the last years electric systems, all around the world, experienced voltage stability problems, basically related to their exploitation, near to the limits, caused by market opportunities and progressive growth of loads with low power factor (air-conditioning, electronic devices, etc.). In this paper it is investigated the problem of modeling some specific components of the electric power system,...
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