Wind Power Plant Voltage Stability Evaluation: Preprint
In this section, we show how to perform power-voltage (PV) and voltage–reactive power (VQ) power system stability analysis on a WPP. We use a single-turbine representation of a WPP.
Wind power has no effect on base load. However, since base load providers can not be ramped down, if wind turbines produce power when there is no or little peak load, the extra electricity has to be dumped (e.g., into the ground) or the wind turbines turned off (”curtailment”). How does wind power affect peak load?
Another factor in WPPs is that the size of a WPP can be very large, as such that the farthest wind turbine generator from the substation cannot provide reactive power as effective as the turbine closest to the substation.
As demand slows, the supply must be decreased. Because wind turbines respond to the wind rather than the grid dispatchers, they must be treated like variable demand rather than reliable supply. The grid has to adjust supply in response to the fluctuations of wind power as well as those of demand.
Most modern wind turbines, and also solar power plants and battery storage, are connected through power electronics and will not naturally provide an inertial response. of their rotating blades, possess a large stored rotational energy.
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