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Improved dynamic security assessment for AC/DC power systems using energy functions

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2 Author(s)
N. Fernandopulle ; IMO, Toronto, Ont., Canada ; R. T. H. Alden

A method is presented to integrate the dynamics of DC power flow into calculations of transient energy functions of AC/DC power systems. This method treats the generator input power as a function of the parameters and the input, output variables of the DC damping power controller. By using this transient energy function, the accuracy of the stability prediction of AC/DC power systems is improved. The new transient energy function is validated using 12-bus and 30-bus test systems by comparing the stability results with those obtained from time simulation. The new transient energy function is used in a number of studies to establish its effectiveness.

Published in:

IEEE Transactions on Power Systems  (Volume:18 ,  Issue: 4 )