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In Germany, the Renewable Energy Act obliges power grid operators to connect renewable generation units to their grids, even when the transfer capacity is temporarily insufficient. During times of excessive renewable energy generation, the grid operator often has to reduce the feed-in of renewable generation units to preserve a secure system state. This paper assesses the potential of topology measures...
In this paper the problem of finding optimal topological configurations of a power transmission system is considered with the aim of maximizing the renewable energy injection. A realistic modeling strategy for bus couplers in multiple-busbar stations is proposed. The solution of the resulting mixed-integer nonlinear programming problem (MINLP) is carried out by a novel binary variant of the Particle...
Harmonic distortion is a growing problem in power systems due to the increasing use of power electronic devices and loads. A possibilistic methodology for harmonic load-flow calculations based on fuzzy numbers has recently been proposed by the authors as an alternative to probabilistic approaches for modeling uncertainties in linear and nonlinear loads. This paper presents a methodology to aggregate...
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