The phase domain generator model for instantaneous value simulation was proposed and introduced into ATP-EMTP as type-58 model by authors. Numerical stability of the type-58 model is higher than type-59 generator model in conventional dq0-domain. However, previous type-58 model had a few problems.
(1) Magnetic saturation was not formulated.
(2) Initialization of generators was inconsistent with unbalanced three-phase network. (3) Computation time was longer than that of type-59 model.
In this paper, modified type-58 generator model is proposed to solve and improve the above problems.
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