Analysis of Long-and Medium-Term Power System Voltage Stability Based on Semi-Tensor Product and Quasi-Steady-State Time Domain Simulation
2011
A method to judge medium-and long-term voltage stability,which integrates the non-linear dynamic stability margin index based on semi-tensor product with quasi-steady state(QSS) time domain simulation,is proposed and a medium-and long-term voltage stability analysis model is built.The built model turns the short-term dynamic balance equations into algebraic equations,thus the complexity of computation of Jacobian matrix and Hessian matrix during solving stability margin index can be reduced.On this basis,the medium-and long-term voltage stability index based on semi-tensor product is used to analyze medium-and long-term voltage stability.The effectiveness of the proposed method is verified by simulation results of New England 10-machine 39-bus system.
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