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This paper presents a new methodology for on-line voltage stability assessment, consisting of two steps. Firstly, the time evolution of the power system operating state is modeled with the help of a forecasting-aided state estimator; secondly the voltage collapse point is determined through an extrapolation technique based on tangent vector behavior. Tests(More)
This paper describes the upgraded portable test bench for the Tile Calorimeter of the ATLAS experiment at CERN. The previous version of the portable test bench was extensively used for certification and qualification of the front-end electronics during the commissioning phase as well as during the short maintenance periods of 2010 and 2011. The new version(More)
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