Electromagnetic transient studies of large distribution systems using frequency domain modeling methods and network reduction techniques

Bilal, Ghassan; Gómez, Pablo; Salcedo, Reynaldo; Villanueva-Ramirez, Juan M.

doi:10.1016/j.ijepes.2019.02.043

Cited by 18 publications

(2 citation statements)

References 27 publications

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“…The straightforward solution of these expressions, usually in the form of voltages and/or currents, can then be converted into the time domain using a frequency-time transformation. From different options available, the numerical Laplace transform (NLT) is well-known for its accuracy, versatility and computational efficiency in the electromagnetic transient analysis of power components and systems [96]- [99]. The present paper demonstrates that the NLT can also be useful for electromagnetic transient stability studies, as shown in Section VI.C.…”

Section: Numerical Laplace Transform (Nlt)mentioning

confidence: 78%

Frequency Domain Methods for Accuracy Assessment of Wideband Models in Electromagnetic Transient Stability Studies

Segundo

Bayo-Salas

Esparza³

et al. 2020

IEEE Trans. Power Delivery

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Modern power systems face several problems at frequencies above the range of traditional stability studies due to the increasing penetration of power electronic devices. This phenomenon has been recently referred to as electromagnetic transient stability and is a growing issue in systems with power electronic converters at any power and voltage level, such as FACTS, HVDC, interfaces for grid connection of renewable energies, custom power devices for power quality enhancement, among others. The study of power systems stability is usually carried out by simulation tools that represent the power system through phasor models. However, due to the faster dynamics of modern systems, the harmonic interaction among the controllers, the converters, and the electric power components, recent research results suggest that some stability analysis should be conducted with models suitable for wider frequency ranges, e.g., electromagnetic transient models. This paper reviews the use of frequency domain methods to analyze the influence of the modeling approach of passive power components on the results of electromagnetic transient stability studies.

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Section: Numerical Laplace Transform (Nlt)mentioning

confidence: 78%

Frequency Domain Methods for Accuracy Assessment of Wideband Models in Electromagnetic Transient Stability Studies

Segundo

Bayo-Salas

Esparza³

et al. 2020

IEEE Trans. Power Delivery

Self Cite

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“…In the literature, the exact equivalent π-model is widely used for the analysis of transients in the frequency domain [3]. However, in [4] it is evident that in the time domain it is only possible to use it in a steady state, whereas the solution is obtained for a single frequency, both at the fundamental and harmonic frequencies.…”

Section: Introductionmentioning

confidence: 99%

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

2022

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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.

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The problem of the actual insulation coordination for 500 kV with overvoltage in substations and the needed for more surge arresters in high voltage grid

Velásquez

Lara

2023

Ain Shams Engineering Journal

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Electromagnetic transient studies of large distribution systems using frequency domain modeling methods and network reduction techniques

Cited by 18 publications

References 27 publications

Frequency Domain Methods for Accuracy Assessment of Wideband Models in Electromagnetic Transient Stability Studies

Frequency Domain Methods for Accuracy Assessment of Wideband Models in Electromagnetic Transient Stability Studies

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

The problem of the actual insulation coordination for 500 kV with overvoltage in substations and the needed for more surge arresters in high voltage grid

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