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The uncertainties and intermittent nature of the wind generation poses certain operational challengers for the transmission grid including traditional energy generation. This paper presents a new viewpoint that the steady security risk assessment should consider uncertainties of wind power, correlation between random variables and fault contingency from periodic planning and real time operation. In...
This paper presents a technique framework to evaluate the nonlinear a.c. probabilistic load flow using Monte Carlo simulation with data mining off-line. It provides the whole process of Monte Carlo simulation with data mining technique from which the probability-density curves of the injected reactive powers, voltages, angles, active and reactive power flows can be made. The indices to evaluate the...
We give a proof of the isoperimetric inequality for quermassintegrals of non-convex starshaped domains, using a result of Gerhardt [C. Gerhardt, Flow of nonconvex hypersurfaces into spheres, J. Differential Geometry 32 (1990) 299–314] and Urbas [J. Urbas, On the expansion of starshaped hypersurfaces by symmetric functions of their principal curvatures, Math. Z. 205 (1990) 355–372] on an expanding...
This paper presents an approach based on energy control for thermal generating unit economical dispatch considering transmission safety, energy and emission constraints. With integration of safety or emission constraints, many algorithms are varied with years. This paper converts a multi-objective model to a single object model with emission using nonlinear model. The framework include: unit economic...
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