On a new approach for the simulation of transients in power systems

Mahseredjian, Jean; Dennetière, Sébastien; Dube, Lucky; Khodabakhchian, B.; Gérin-Lajoie, L.

doi:10.1016/j.epsr.2006.08.027

Cited by 373 publications

(138 citation statements)

References 10 publications

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“…In order to verify the correctness of the solution provided by (16), we have first compared the objective function defined by (16) with an error function inferred from the differences between the voltage/current waveforms obtained for various values of G s and reference ones obtained using the ideal-switch model. Such an error function includes time-domain switch voltage and current waveforms subsequent to switch state transitions (in particular, subsequent to pairs of 'on'-'off' transitions).…”

Section: Methods Verification Toward Error and Losses Functionsmentioning

confidence: 99%

“…As it will be clarified next, the validation of the proposed method has been done using the EMTP-RV simulation environment [15,16] where the backward Euler integration method was used. In this respect, it is worth observing that the proposed approach is independent from the adopted numerical integration technique.…”

Section: Discrete-time Representation Of Electrical Systemsmentioning

confidence: 99%

See 1 more Smart Citation

A method for the assessment of the optimal parameter of discrete-time switch model

Razzaghi¹,

Foti²,

Paolone³

et al. 2014

Electric Power Systems Research

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a b s t r a c tThis paper proposes a novel method for the optimal parameter selection of the discrete-time switch model used in circuit solvers that adopt the fixed admittance matrix nodal method (FAMNM) approach. As known, FAMNM-based circuit solvers allow to reach efficient computation times, in particular for realtime simulation applications, since they do not need the inversion of the circuit nodal admittance matrix. However, these solvers need to optimally tune the so-called discrete switch conductance, since this parameter might largely affect the simulations accuracy. Within this context, we propose a method for the determination of the discrete-time switch conductance which is obtained by minimizing the distance between the eigenvalues of the original circuit's nodal admittance matrix with those associated with the circuit including the discrete-time switches. The method is proven to provide values of the discrete-time switch conductance that maximize the simulation accuracy and minimize the losses on this artificially introduced parameter. Additionally, the proposed method avoids the use of trial-and-error process typically required when discrete-time switch conductances need to be addressed in FAMNM approach. The performances of the proposed method are demonstrated for circuits with single and multiple switches in which passive RLC elements and transmission lines are both considered.

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Section: Methods Verification Toward Error and Losses Functionsmentioning

confidence: 99%

Section: Discrete-time Representation Of Electrical Systemsmentioning

confidence: 99%

A method for the assessment of the optimal parameter of discrete-time switch model

Razzaghi¹,

Foti²,

Paolone³

et al. 2014

Electric Power Systems Research

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show abstract

“…The overhead line and the cable lengths are 9 km and 3 km, respectively and the network is simulated in EMTP-RV [19], [20] The line and the cable ends are terminated to power transformers represented, as discussed in [15], by high impedances. All the fault transients are recorded at the three observation points (OP1, OP2, OP3) corresponding to the three conductors of the line (left terminal).…”

Section: A Inhomogeneous Network Composed Of An Overhead Line and Anmentioning

confidence: 99%

Assessment of the influence of losses on the performance of the electromagnetic time reversal fault location method

Razzaghi

Lugrin

Rachidi

et al. 2017

2017 IEEE Manchester PowerTech

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Abstract-Electromagnetic time reversal (EMTR) has beenshown to be an efficient method for locating faults in AC and DC power grids. In the available literature, the back-propagation medium has been considered to have identical losses as the directtime medium. However, the telegrapher's equations describing the travelling wave propagation are time-reversal invariant if and only if inverted losses are considered in the back propagation phase. This paper presents an analysis of the impact of losses on the performance of the EMTR-based fault location method for power networks. In this respect, three back-propagation models are proposed, analyzed and compared. It is shown that a lossy back-propagation model, for which the wave equations are not rigorously time-reversal invariant, results in accurate fault locations. Finally, an EMTR fault location system based on the lossy back-propagation model and a fast electromagnetic transient simulation platform is developed and its performances validated.

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“…The main system of symmetric equations for an n node system is given by formulation as introduced in [9] and improved in [10] and [11]. In MANA formulation, …”

Section: Power System Network Equations In Emtp-type Programsmentioning

confidence: 99%

“…This will continue until (j+k) th operating segment if it The accuracy of the dq0 model can be improved through an optional iterative scheme with the MNE before advancing to the next time point. The TE is updated for voltage convergence through an iterative process [10], [43] that includes all other nonlinear devices and machines connected through the main network. This approach also eliminates the accumulation of prediction errors and provides desired model stability.…”

Section: Discrete-time Dq0 Modelmentioning

confidence: 99%

Synchronous machine modeling precision and efficiency in electromagnetic transients

Karaagac

Mahseredjian

Saad

et al. 2011

2011 IEEE Power and Energy Society General Meeting

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On a new approach for the simulation of transients in power systems

Cited by 373 publications

References 10 publications

A method for the assessment of the optimal parameter of discrete-time switch model

A method for the assessment of the optimal parameter of discrete-time switch model

Assessment of the influence of losses on the performance of the electromagnetic time reversal fault location method

Synchronous machine modeling precision and efficiency in electromagnetic transients

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