PROBABILISTIC TOTAL TRANSFER CAPABILITY BASED ON STATIC VOLTAGE STABILITY REGION ANALYSIS AND UNCERTAINTIES OF AGGREGATED FEEDER- LEVEL LOAD DATA

m odel the probability density functions (PDF) of the feeder-head load data through a Monte-Carlo simulation. At the transmission-level, in order to completely describe possible changes in the operational trajectory within the power injection space, we construct the original hyper-cone model which provides a close fit to the actual PDF model extracted from the feeder-head load data to replace the rough one presented in [1]. Through a similarity transformation, we obtain subhyper-cone model to determine possible changes in operational trajectories from the current operating point, and achieve a fast calculation (F.C.) method for TTC based on a smaller SVSR boundary area.