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High-speed EM interaction between components
A common expectation about a `smart grid' is the use of many quickly controllable devices such as reactive power sources and line-flow control. New generation sources such as photovoltaics, high-speed turbines, and some wind-power use power electronic converters to interface to the ac grid.
As soon as there are multiple components on a power grid, each with some sort of feedback between terminal voltage and current, there is a chance of interactions that lead to oscillations or other undesired behaviour. Some such interactions, for example between large generators and motors, or control devices such as SVCs (reactive compensation), are much known and studied. A difference with the newer devices in smart grids is their greater proximity and their generally greater speed of response. This could give rise to interactions at frequencies corresponding more to the speed of EM transients, much faster than the ac cycle. The situation is then quite different from what has traditionally been studied in the power systems area, where it is common to use a sinusoidal steady-state approximation and to view the network as `an algebraic constraint'.
This MSc project will investigate potential fast interactions between components in a grid. It will involve becoming familiar with a range of widespread and new components and their suitable models, along with EM transients simulation.
Informationen om uppsatsförslag är hämtad från Nationella Exjobb-poolen.