An alternative model for aerial multiconductor transmission lines excited by external electromagnetic fields based on the method of characteristics

Sánchez-Alegría, Avisaí; Moreno, P.; Loo‐Yau, J. R.; Ortega-Cisneros, S.

doi:10.1007/s00202-019-00819-4

Cited by 2 publications

(3 citation statements)

References 18 publications

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“…These equations consider the general behavior of the underground cables and transmission lines. Considering the case where the conductance matrix does not depend on the frequency, the term F in Equations ( 31) and (32) becomes zero, which turns the equations into (12) and (13). Additionally, the term η 1 becomes the unity matrix for the case neglecting the conductance matrix, as mentioned above; thus, the equations proposed in [11] are obtained.…”

Section: B Characteristics Methods For Cablesmentioning

confidence: 99%

“…A model based on the method of characteristics that does not require solutions at transmission line interior points and takes as the starting point the transmission line equations in the frequency domain is presented in [11]. Sánchez-Alegría et al developed an extension of the model for field-excited transmission lines in 2019 [12].…”

Section: Introductionmentioning

confidence: 99%

“…Equations (12) and (13) represent the dual Norton model of aerial multiconductor transmission lines, taking into account the conductance matrix. The equivalent circuit is shown in Fig.…”

mentioning

confidence: 99%

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Novelty Underground Cable Model for Power System Transient Simulation

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This paper presents an extension of the A-line model [11] for underground cables that takes into account the frequency dependence and includes the conductance matrix; the new cable model is named the U-Cable model. This paper also presents the mathematical development that supports the new U-Cable model; thus, following the methodology, it can be observed how the cable parameters are related to the construction of the final mathematical model. This model has the characteristic that the fitting is generated by real poles in a natural manner without forcing vector fitting to change to only real poles, which makes the developed model extremely stable from a numerical point of view. The numerical Laplace transform (NLT) and PSCAD software are used for comparison purposes. The reason for the use of the NLT is that, if it is properly programmed, it always yields a reliable solution. For the comparisons, a short-circuited line is simulated first, followed by a matched line and then an open line with a unit step. A second simulation is performed by changing the unit step to a three-phase sinusoidal source. A comparison of the results obtained from the proposed model with those of the NLT and PSCAD provides support and reliability to this model because the differences observed, in most cases, are barely perceptible. Thus, it can be concluded that the presented model is an additional option to the existing models.

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Section: B Characteristics Methods For Cablesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%