Long Term Dynamic Behavior Analysis for Power System Including Wind Farms

The increasing capacities of wind power bring a great influence on power system stability because wind power can produce in stochastic behaviors due to special fluctuant characteristics of natural wind. There is lack of research on long-term dynamic behavior simulation for power system including wind farms. This paper adopts mathematic dynamic model of induction wind generating set, and makes use of flexible self-adjustment method to analyze long term dynamic behavior for power system including wind farms under different wind condition and operating mode. Numerical example shows that flexible self-adjustment method is suitable for long term dynamic simulation of power system including wind farms, and also shows that random variations of wind power bring extra fluctuation to power system voltage, frequency and tie-line power.