A Three-Phase Cable Model Based On Lumped Parameters For Transient Calculations In The Time Domain

In this paper, a three phase cable model to simulate transient phenomena in power systems is introduced. The model is based on lumped parameters and represented with cascaded developed pi-sections. A modal transformation technique has been used in the proposed model. The frequency dependent elements of the related modal transformation matrices have been fitted with rational functions. This strategy allows using an efficient recursive convolution for realizing the simulation in the time domain. In pi-sections the frequency dependence of cable parameters is reproduced by means of vector fitting algorithm and implemented through a RLC-network. The results of the proposed model has been validated using measured data. The results of proposed 3P-pi-Model and previously developed 1P-pi-Model compared with measured data verifies that 3P-pi-Model gives better match, which in turn supports the approach used in developing of this cable model.