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In this paper we report on the preliminary results of a collaborative investigation effort between researchers in North America and Europe aiming to baseline the electromechanical modes and mode shapes of the Nordic system from synchronized phasor measurement data. We provide an overview on the Danish power grid and its interconnections, and describe the features of an experimental phasor measurement...
In large interconnected electric power systems, inter-area electromechanical oscillations may occur due to weak links among power systems. These oscillations involve power exchanges but also voltage and current oscillations that may cause tripping of lines or generators and thus lead to severe disturbances. Such oscillations have been (rarely) observed in the synchronous interconnected system of Continental...
This paper discusses aspects related to a wavelet transform and random decrement technique based method developed for estimating power system electromechanical oscillation damping from ambient-excited oscillations. The main focus of this paper is in finding the optimal wavelet functions for the damping estimation method. General selection criteria for the wavelet functions are defined, the selection...
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