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《Journal of Electric Power Science and Technology》 2009-01
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Direct solution of optimal power flow considering small-signal stability constraints

CHEN Li-bin,TANG Fang-qi,ZHOU Ren-jun,HU Min(School of Electrical and Information Engineering,Changsha University of Science & Technology,Changsha 410004,China)  
In order to limit power system operation in the critical range of static stable stability,a group of small-signal stability constraints as inequality constraints in the traditional optimal power flow model are added,and the optimal power flow mathematical model considering small-signal stability constraints is established in this paper.The critical eigenvalues real value of the system matrix as small-signal stability index is applied to form a constraint function,then the small-signal stability constraints is transformed by Cayley transformation,spectral function and Smoothing Newton-Type Method.The large scale nonlinear system is thus convenienced to calculate with matrix eigenvalues directly.By using in a WSCC 3 machines 9 buses system,this method effectiveness are verified.
【Fund】: 国家自然科学基金(70601003)
【CateGory Index】: TM744
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