Accuracy enhancement of the JMarti model by using real poles through vector fitting

Bañuelos-Cabral, E.S.; Gutierrez-Robles, José Alberto; García-Sánchez, Jorge Luis; Sotelo-Castañón, J.; Galván-Sánchez, V. A.

doi:10.1007/s00202-019-00807-8

Cited by 11 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It uses Bode's asymptotic method to approximate the characteristic impedance and propagation function of the TL as a sum of minimum phase rational functions. One issue with this method is that it incurs errors because it generates numerous poles and zeros [21], [22].…”

Section: The Jmarti Modelmentioning

confidence: 99%

“…This is because the proposed approach can be implemented in any circuit solver using basic circuit elements. For instance, we combine the extended JMarti model [21], [22] and the proposed arrangement of transformers to simulate a TL whose parameters consider the frequency dependence of the soil resistivity and permittivity. We compare the results obtained to those obtained using built-in TL parameters calculation tools.…”

Section: E Customization Of the Tl Model And Tl Parametersmentioning

confidence: 99%

“…Since the GUI used to receive the data from the user does not receive other arguments or equations, the TL parameters can only be calculated assuming a relative permittivity of the soil of one (Carson's equations). To overcome this limitation, we adapt the extended JMarti model proposed in [21], [22]. Here, we include the frequency dependence of the line parameters using Sunde's equations and decouple the TL using Clarke's matrix [23].…”

Section: E Customization Of the Tl Model And Tl Parametersmentioning

confidence: 99%

See 2 more Smart Citations

Implementation of Modal Domain Transmission Line Models in the ATP Software

et al. 2022

View full text Add to dashboard Cite

Electromagnetic Transients Program make extensive use of transmission line models for the simulation of electromagnetic transients. This paper proposes a circuit representation of the modal transformation, more specifically Clarke's matrix. The arrangement of ideal transformers we propose allows modal transformation to be directly implemented in software such as Alternative Transient Program -Electromagnetic Transients Program. We combined the proposed circuit with single-phase transmission line models that consider frequency independent and frequency dependent parameters to represent transposed three-phase transmission lines. The main advantage of the proposed approach is that it allows the implementation of new transmission line models without depending on models provided in applications. To show this capability, we included the frequency dependence of soil parameters in the simulations. Results show that the proposed model is accurate both in the frequency domain and in the time domain.

show abstract

Section: The Jmarti Modelmentioning

confidence: 99%

Section: E Customization Of the Tl Model And Tl Parametersmentioning

confidence: 99%

Section: E Customization Of the Tl Model And Tl Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Implementation of Modal Domain Transmission Line Models in the ATP Software

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In general, a rational approximation can be conducted using the Bode method, as described in [24], and it is similar to the approach taken in ATP software. Alternatively, it can be accomplished using the vector fitting technique, as proposed in [25,26], or via techniques based on Green's functions, as suggested in [27]. To perform the rational approximation of H, J. Marti's model, one must associate a time delay τ to the H function; this refers to the wave propagation time, and it is also used in Bergeron's and ULM models.…”

Section: Introductionmentioning

confidence: 99%

Using the Exact Equivalent π-Circuit Model for Representing Three-Phase Transmission Lines Directly in the Time Domain

Robles Balestero,

Leon Colqui,

Kurokawa

2023

Energies

View full text Add to dashboard Cite

This paper presents a novel three-phase transmission line model for electromagnetic transient simulations that are executed directly within the time domain. This model relies on distributed and frequency-dependent parameters, as well as employs modal transformation for its implementation. The single-phase model of the exact equivalent π-circuit is utilized for each propagation mode. This model combines discrete components, such as resistors, inductors, and capacitors, to accurately emulate the transmission line behavior via linear circuit elements. This model can be seamlessly integrated into various electrical circuit simulation software, thus allowing easy utilization and incorporating time-varying elements to analyze transmission lines. The JMarti model, which comes by default in the Alternative Transient Program, and the numerical Laplace transform method implemented in MATLAB were utilized to validate the proposed solution across various scenarios. An advantage of this model is its independence from the prior calculation of travel time and its exemption from convolutions, inverse Laplace transforms, and Fourier transforms, thus streamlining the simulation process.

show abstract

“…JMarti's model is implemented in Electromagnetic Transient (EMT) programs, such as the ATP-EMTP software, where Y c and H are approximated by rational functions using Bode's method. In [20], the authors present a proposal to improve the accuracy of the model, replacing Bode's method with the vector fitting technique [21]. The ULM circumvents some limitations of JMarti's model because the solution is directly in the phase domain.…”

Section: Introductionmentioning

confidence: 99%

Using the Exact Equivalent π-Circuit of Transmission Lines for Electromagnetic Transient Simulations in the Time Domain

2022

View full text Add to dashboard Cite

This work presents a transmission line model for simulating electromagnetic transients directly in the time domain. For this purpose, the exact equivalent π-circuit is used, which represents the line taking into account its distributed and frequency-dependent parameters. The admittances that constitute the exact equivalent π-circuit are approximated by rational functions using the vector fitting technique. Then, for each admittance, an electrical circuit is synthesized, consisting of an association of discrete elements (resistors, inductors, and capacitors) aiming at modeling the transmission line, thus allowing its use in any circuit simulation software and the eventual connection of nonlinear elements. From the simulation results, it is reasonable to state that the proposed model is a feasible representation, which aggregates the same features of the exact equivalent π-circuit directly in the time domain, not only in steady state, but mainly during transients and also without the need for using convolutions, as well as inverse Laplace or Fourier transforms.INDEX TERMS Electromagnetic transients, Transmission line model, Time-domain analysis, Vector Fitting.

show abstract

Accuracy enhancement of the JMarti model by using real poles through vector fitting

Cited by 11 publications

References 14 publications

Implementation of Modal Domain Transmission Line Models in the ATP Software

Implementation of Modal Domain Transmission Line Models in the ATP Software

Using the Exact Equivalent π-Circuit Model for Representing Three-Phase Transmission Lines Directly in the Time Domain

Using the Exact Equivalent π-Circuit of Transmission Lines for Electromagnetic Transient Simulations in the Time Domain

Contact Info

Product

Resources

About