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Voltage control in distribution networks with windpower

Olof Samuelsson, Lund University

Abstract:

Frequency dynamics, fault clearing and voltage control practically all build on the traditional situation with synchronous generators located in the meshed (sub)transmission network. Large-scale introduction of windpower is a step away from this situation which has consequences for planning and control of power systems. This presentation will focus on voltage control in distribution networks where windpower challenges the basic design assumption of infeed of power at a single point. Generating units can be used for controlling voltage and the power electronic network interface of most wind turbine generators are well suited for this, but this may be neither the only nor the optimum solution. A new source of voltage measurements are the new electricity meters and it is shown how these can be employed in a voltage control scheme that permits integration of considerably more windpower than the usual scheme allows. Results are quantified using data from a real distribution network.

Presentation Slides