A relaxation scheme to combine phasor-mode and electromagnetic transients simulations

Plumier, Frédéric; Aristidou, Petros; Geuzaine, Christophe; Cutsem, Thierry Van

doi:10.1109/pscc.2014.7038484

Cited by 18 publications

(9 citation statements)

References 12 publications

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“…One issue tackled in this paper is the proper choice and update of the multi-port equivalent attached to those interface buses. This is an extension of the authors' previous work reported in [9], [10].…”

Section: Introductionsupporting

confidence: 85%

“…It must be noted that the choice between Norton and Thévenin is arbitrary, as for each one there is an equivalent model in the other representation. This approach can be already found in [13], while further investigations have been reported in [7], [9], [10]. Nevertheless, the above references report on results with a single boundary bus, and on small test systems.…”

Section: A Short Review Of Boundary Conditionsmentioning

confidence: 99%

“…Main steps and information exchange relaxation process for cosimulation [10] (resp. L pm ) is the corresponding resistance (resp.…”

Section: A Relaxation Processmentioning

confidence: 99%

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Co-Simulation of Electromagnetic Transients and Phasor Models: A Relaxation Approach

Plumier

Aristidou

Geuzaine

et al. 2016

IEEE Trans. Power Delivery

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Abstract-Co-simulation opens new opportunities to combine mature ElectroMagnetic Transients (EMT) and Phasor-Mode (PM) solvers, and take advantage of their respective high accuracy and execution speed. In this paper, a relaxation approach is presented, iterating between an EMT and a PM solver. This entails interpolating over time the phasors of the PM simulation, extracting phasors from the time evolutions of the EMT simulation, and representing each sub-system by a proper multiport equivalent when simulating the other sub-system. Various equivalents are reviewed and compared in terms of convergence of the PM-EMT iterations. The paper also considers the update with frequency of the Thévenin impedances involved in the EMT simulation, the possibility to compute the EMT solution only once per time step, and the acceleration of convergence through a prediction over time of the boundary variables. Results are presented on a 74-bus, 23-machine test system, split into one EMT and one PM sub-system with several interface buses.

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Section: Introductionsupporting

confidence: 85%

Section: A Short Review Of Boundary Conditionsmentioning

confidence: 99%

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Co-Simulation of Electromagnetic Transients and Phasor Models: A Relaxation Approach

Plumier

Aristidou

Geuzaine

et al. 2016

IEEE Trans. Power Delivery

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show abstract

“…This is because the system basically reaches steady state at t = 12 s, and the EMT model and the TSA model of the same sub-network at steady state are equivalent. Through analyzing the simulation results, it can be seen that, although a serious three-phase short-circuit fault occurs at the boundary of the area of interest, the average difference [31] of the voltages at the fault points and the average difference of rotor speed are all within 0.05 pu. It is proven that the proposed method can ensure that the area of EMT simulation is flexibly changed and meets the requirements of simulation accuracy.…”

Section: B Case Twomentioning

confidence: 99%

Electromagnetic Transient-Transient Stability Analysis Hybrid Real-Time Simulation Method of Variable Area of Interest

2018

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To make the object of electromagnetic transient (EMT) simulation flexible to change, the authors propose using the method of electromagnetic transient-transient stability analysis (TSA) hybrid real-time simulation of the variable area of interest. The area where the fault is to be set, or where the operation takes place, is defined as the area of interest. The simulation object is divided into multiple sub-networks. The EMT simulation range is determined according to the voltage drop depth at the boundary of the adjacent sub-network caused by the three-phase short-circuit fault at the boundary of an area of interest. The Norton equivalent is obtained by using the sub-network as a basic unit. The electromagnetic sub-network forms its own Norton equivalent on the TSA side by means of the Norton equivalent admittance of its TSA model. Based on this, the overall framework of hybrid real-time simulation of the variable area of interest is constructed. The fundamental phasor prediction and Norton equivalent current source prediction are adopted to reduce the interface error. The performance of the proposed method in terms of feasibility, flexibility, and effectiveness have been verified by the simulation studies on the IEEE 118-bus system.

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“…Previous researches on EMT and transient stability co‐simulation were mainly focused on interfacing techniques [8–10], interaction protocols [10, 11], and development of co‐simulation programs [11–13]. The external network equivalents used in these researches were developed based on positive‐sequence network models, which would undermine the merits of co‐simulation.…”

Section: Introductionmentioning

confidence: 99%

Open‐source framework for power system transmission and distribution dynamics co‐simulation

Huang

Fan

Daily

et al. 2017

IET Generation, Transmission & Distribution

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A relaxation scheme to combine phasor-mode and electromagnetic transients simulations

Cited by 18 publications

References 12 publications

Co-Simulation of Electromagnetic Transients and Phasor Models: A Relaxation Approach

Co-Simulation of Electromagnetic Transients and Phasor Models: A Relaxation Approach

Electromagnetic Transient-Transient Stability Analysis Hybrid Real-Time Simulation Method of Variable Area of Interest

Open‐source framework for power system transmission and distribution dynamics co‐simulation

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