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Robust ranking of loads by using sensitivity factors and limited number of points from a hyperspace of uncertain parameters

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3 Author(s)
Maslennikov, V.A. ; Dept. of Power Networks & Syst., St. Petersburg State Tech. Univ., Russia ; Milanovic, J.V. ; Ustinov, S.M.

The problem of load ranking in power system is revisited and a new robust method for revealing loads having the biggest influence on power system small disturbance stability is described. The problem of a large number of combinations of uncertain load parameters needed for trustworthy results of the analysis is solved by using uniformly distributed sequences in hyperspace of load parameters. This approach leads to robust results and requires a small computation time. The method further allows us to evaluate the range of power system damping uncertainty and to obtain a maximum increment of system model accuracy using limited number of field tests and such reducing overall costs associated with system field measurements.

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Power Systems, IEEE Transactions on  (Volume:17 ,  Issue: 3 )