Probabilistic AC/DC 3-phase load flow

The most adequate way to rake into account the uncertainties which affect the modelling of unbalanced 3-phase power systems including H.V.D. C. interconnections is to express the input data by random variables and to apply probabilistic techniques of analysis. In this paper a probabilistic 3-phase A.C./D.C. power flow is proposed able to take into account the interactions that arise under uncertainty between the H.V.D.C. transmission system converters and the unbalanced 3-phase A.C. system. Both Monte Carlo procedure and a linearised form are proposed. A numerical application to a test system is also discussed.