Multirate and Mixed Solver Based Cosimulation of Combined Transient Stability, Shifted-Frequency Phasor, and Electromagnetic Models: A Practical LCC HVDC Simulation Study

Shu, Dewu; Ouyang, Ziqiang; Yan, Zheng

doi:10.1109/tie.2020.2988228

Cited by 7 publications

(6 citation statements)

References 23 publications

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“…Finally, considering the expressions of the impedance in (10) the generated current (i load ) for each phase is shown in (11).…”

Section: Auxiliary Systemmentioning

confidence: 99%

Hardware-in-the-Loop Platform for Virtual Certification of Traction Systems for Railway

Herrero,

Mendez,

Caballo

et al. 2024

IEEE Access

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The railway industry is continuously evolving, necessitating the development of more intricate and dependable software algorithms. To meet these requirements, the creation of new validation tools has become increasingly crucial, with a specific focus on Hardware-In-the-Loop (HIL) simulations. HIL simulations are invaluable during the product development process as they improve system resilience, performance, and overall product value. This study details the design of a HIL platform that can validate the software created for the Traction Control Unit (TCU) of a complex traction system. By producing real interfaces in real-time, this platform offers a practical simulation environment for examining the TCU software. The HIL platform built in this research provides comprehensive test coverage of the TCU software, a feat that is often unattainable through on-train testing. Moreover, the platform provides greater tuning and debugging capabilities, allowing for a virtual certification of the TCU software, which can offer greater security and assurances of success when encountering official tests. Thus, this paper demonstrates how profitable a HIL platform that models the whole traction system can be in order to debug and certificate its TCU software.

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“…Finally, considering the expressions of the impedance in (10) the generated current (i load ) for each phase is shown in (11).…”

Section: Auxiliary Systemmentioning

confidence: 99%

Hardware-in-the-Loop Platform for Virtual Certification of Traction Systems for Railway

Herrero,

Mendez,

Caballo

et al. 2024

IEEE Access

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“…Recently, to address issues with this interaction, a numerically stable and accurate simulation method was proposed in [93] by combining DP-based shifted frequency phasors, TS, and EMT solvers,where DP is used to model the buffer-zone between the EMT and TS models to reduce the frequency bandwidth difference. This was further extended in [94] to capture the high-frequency dynamics between AC/DC grids. A multi-rate and mixed solver with a practical case study was also presented in [94].…”

Section: B Dynamic Phasor -Electromagnetic Transients Co-simulationmentioning

confidence: 99%

“…This was further extended in [94] to capture the high-frequency dynamics between AC/DC grids. A multi-rate and mixed solver with a practical case study was also presented in [94].…”

Section: B Dynamic Phasor -Electromagnetic Transients Co-simulationmentioning

confidence: 99%

Review of Methods to Accelerate Electromagnetic Transient Simulation of Power Systems

et al. 2021

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Converter-based generators are increasingly replacing classical synchronous generation, resulting in significant challenges to the operation and planning of modern power systems. Power electronics (PE)-based equipment, along with non-linear PE-driven loads, introduce time-varying characteristics and fast switching behavior that increases the complexity of the power system model. Faster control actions are needed to overcome the fast switching dynamics to ensure the reliability and stability of future power systems. Thus, this requires advanced and detailed simulation methods and tools with highly accurate equivalent models to embody the relatively slower electromechanical to faster electromagnetic transient (EMT) phenomena. Conventional transient stability analysis using positive-sequence simulators has become inadequate for representing converter-dominated power systems, while EMT simulators suffer from the high computational burden. This review paper presents accelerated EMT simulation methods and tools that are categorized and discussed in three topics: system equivalents, simulation methods, and accelerating tools. Dynamic system equivalent techniques are discussed to model small to large interconnected external systems of the grid network. Moreover, a systematic review is made for existing EMT simulation methods, along with advanced co-simulation methods, for addressing simulation speed and accuracy issues in large power system networks. Emerging hardware-based simulation tools are reviewed that reduce the computational burden and increase the simulation efficiency of the power system model. Challenges and trends in EMT simulation are also presented and concluded by providing perspectives on this research topic.

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“…At present, the methods used to study the transient power angle stability of AC/DC inter-connected system mainly include time domain simulation method, artificial intelligence method and transient energy function method [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Reference [14] proposed a faster‐than‐real‐time dynamic simulation method of AC/DC interconnected power grid based on FPGA reconfigurable parallel hardware structure and proposed a fine‐grained relaxation algorithm (FGRA) to more effectively solve the nonlinear differential‐algebraic equations of the interconnected system model to achieve the lowest delay and the lowest utilization of hardware resources. Reference [15] proposed a joint simulation method based on a multi‐rate hybrid solver combining transient stability (TS), shifted‐frequency phasor (SFP), and electromagnetic transient (EMT) models. The system's efficiency is guaranteed by the natural partitioning strategy, decoupled manner‐based communication structure, and the overall realization of time sequence.…”

Section: Introductionmentioning

confidence: 99%

Calculation of the transient stability boundary of AC/DC inter‐connected system based on the stability margin of dynamic energy

Zhang

Shao

et al. 2021

IET Generation Trans & Dist

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Concerning the transient power angle stability problem in AC/DC inter‐connected system caused by DC line grounding fault, a transient stability analysis method based on the stability margin of dynamic energy is proposed. First, the analytical expressions of the dynamic energy function before alpha retard, during alpha retard and after alpha retard are derived. According to the topologies of system and the integration intervals of energy function in different stages, the expressions of the acceleration energy, position energy and margin energy are obtained, which, respectively, reflect the rotating speed of system, the swing range of power angle and the system's ability of resisting in stability. Then, the surplus energy in the system is calculated by subtracting the sum of the acceleration energy and position energy from the margin energy, and the stability margin of the system is obtained. And then, the stability boundary of the system is derived. It is revealed that, if the stability margin is exactly right 0 at the end moment of alpha retard, the system is critical stable. Finally, hardware‐in‐the‐loop tests are conducted in RT‐LAB platform. The simulation results verify that, the stability margin reaches the minimal value at the end moment of alpha retard, and this value can clearly reflect the stability of system. Besides, the earlier the alpha retard starts or the longer the distance between the fault point and the rectifier outlet is, the better it is for the stability of system.

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Multirate and Mixed Solver Based Cosimulation of Combined Transient Stability, Shifted-Frequency Phasor, and Electromagnetic Models: A Practical LCC HVDC Simulation Study

Cited by 7 publications

References 23 publications

Hardware-in-the-Loop Platform for Virtual Certification of Traction Systems for Railway

Hardware-in-the-Loop Platform for Virtual Certification of Traction Systems for Railway

Review of Methods to Accelerate Electromagnetic Transient Simulation of Power Systems

Calculation of the transient stability boundary of AC/DC inter‐connected system based on the stability margin of dynamic energy

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