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Passivity Enforcement Using an Infeasible-Interior-Point Primal-Dual Method

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4 Author(s)
Babak Porkar ; Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran ; Mehdi Vakilian ; Reza Iravani ; S. Mohammad Shahrtash

Application of the network equivalent concept for external system representation in electromagnetic transient studies is well known. However, the challenge in application of an equivalent model, approximated by rational functions, is to guarantee passivity of the corresponding model. Therefore, there is a need to enforce passivity of the equivalent model. In this paper, the passivity enforcement problem is first formulated as a quadratic programming (QP) problem, and then solved based on an efficient implementation, using an infeasible-interior-point primal-dual method. An application of this method for passivity enforcement of a six-port admittance model (with large passivity violations) demonstrates its effectiveness and computational efficiency.

Published in:

IEEE Transactions on Power Systems  (Volume:23 ,  Issue: 3 )