SECURITY CONSTRAINED ECONOMIC-DISPATCH USING NONLINEAR DANTZIG-WOLFE DECOMPOSITION

This paper proposes a new approach to the Security Constrained Economi c Dispatch based on a nonlinear version of the Dantzig-Wolfe decomposi tion principle. The dispatch problem is formulated using truly nonline ar unit cost functions and a new, detailed representation of reserve c urves. The solutions obtained by the method have the equal lambda prop erty. The proposed decomposition scheme is more efficient as the numbe r of generating units in the problem is increased. Numerical results o btained on three test cases are presented.