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Wind energy has had in the last decade an exponential growth in the world. Although the most recent technology offers wind generators able to directly control the reactive power absorbed/injected from the distribution network, most of the currently installed wind turbines utilize inductor generators that do not perform voltage regulation and absorb reactive power from the utility grid. In this paper...
This paper presents the results of a feasibility study of a virtual power plant (VPP) in central Sweden designed to provide ancillary services to a 50-kV distribution network. The VPP consists of a wind park, hydro plant and reservoir as well as solar PVs and battery energy storage. The 50-kV subtransmission network was modeled in order to evaluate the ancillary services that could be provided by...
Presently, the active and reactive power limits of the power generation model implemented in the TSO's system security assessment tools do not respond to the grid's actual voltage. This model is only accurate as long as the voltage remains within narrow limits. This paper proposes to improve the accuracy of the system security assessment by implementing precise voltage dependent reactive power limits...
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