Development of a PSS/E tool for power-flow calculation and dynamic simulation of VSC-HVDC multi-terminal systems

Renedo, Javier; Cerrada, Aurelio García; Rodríguez, Luis Rouco; Sigrist, Lukas; Cortés, I.; Verdugo, Silvia Sanz

doi:10.1049/cp.2017.0060

Cited by 15 publications

(34 citation statements)

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“…Figure 1 shows a hybrid AC/DC system with an embedded VSC-MTDC system while Figure 2 illustrates the dynamic model of a VSC station connected to an AC grid and to a DC grid, following the guidelines of [42,43] for electro-mechanical simulation. The guidelines of the modelling approach used are provided in this section, while details are available in [44].…”

Section: Vsc-hvdc Multi-terminal Systemsmentioning

confidence: 99%

“…Every VSC station has two degrees of freedom for the outer loop: (a) the converter can control either the active-power injection into the AC grid (p s,i ) or the DC voltage (u dc,i ) with the d-axis current; and (b) the converter can control either the reactive-power injection into the AC grid (q s,i ) or the magnitude of the AC voltage at the connection point (u s,i ) with the q-axis current. Operating limits of the converters can be easily implemented in the model [44].…”

Section: Vsc Stationsmentioning

confidence: 99%

“…The initial operating point is obtained solving a sequential AC/DC power flow, as proposed in [51]. Details of the PSS/E implementation used for this work and its validation can be found in [44]. Figure 3 shows a general diagram for P and Q control in a VSC station.…”

Section: Model Implementationmentioning

confidence: 99%

“…Data are detailed in Appendix A. Converter stations were operated with DC-voltage droop control and reactive-power control. Simulations were carried out in PSS/E software [46], with the VSC-MTDC model presented in [44]. The initial operating point of the VSC-MTDC system was calculated running an AC/DC power flow, with the following specified variables:…”

Section: Case Study 1: Kundur's Two-area Test System With An Embeddedmentioning

confidence: 99%

“…Data are detailed in Appendix B. Converter stations were operated with DC-voltage droop control and reactive-power control. Simulations were carried out in PSS/E software [46], with the VSC-MTDC model presented in [44].…”

Section: Case Study 2: Cigré Nordic32a Test System With An Embedded Vmentioning

confidence: 99%

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Coordinated Control in VSC-HVDC Multi-Terminal Systems to Improve Transient Stability: The Impact of Communication Latency

et al. 2019

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Power transmission is the main purpose of high voltage direct current systems based on voltage source converters (VSC-HVDC). Nevertheless, this type of system can also help to improve transient stability by implementing suitable supplementary controllers. Previous work proposed active- (P) and reactive-power (Q) control strategies in VSC-HVDC multi-terminal systems (VSC-MTDC, for short) to improve transient stability, producing significant improvements. In those strategies, each VSC station of the MTDC system compares its frequency measurement with the average of the frequencies measured by all converter stations of the MTDC system (weighted-average frequency, WAF) in order to modulate its own P and Q injections. Hence, a communication system is required. This paper presents a detailed analysis of the impact of communication latency on the performance of those control strategies. The communication delays have been modelled using a Padé’s approximation and their impact on the performance of the control strategies have been assessed by means of time-domain simulation in PSS/E. The effect of the control strategies on transient stability has been quantified with the critical clearing time (CCT) of a set of faults. Results show that the control strategies analysed present good results for realistic values of communication delays.

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Section: Vsc-hvdc Multi-terminal Systemsmentioning

confidence: 99%

Section: Vsc Stationsmentioning

confidence: 99%

Section: Model Implementationmentioning

confidence: 99%

Section: Case Study 1: Kundur's Two-area Test System With An Embeddedmentioning

confidence: 99%

Section: Case Study 2: Cigré Nordic32a Test System With An Embedded Vmentioning

confidence: 99%

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Coordinated Control in VSC-HVDC Multi-Terminal Systems to Improve Transient Stability: The Impact of Communication Latency

et al. 2019

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Hybrid AC/DC Electrical Power Grids in Active Buildings: A Power Electronics Perspective

Monteiro

Oliveira

Coelho

et al. 2022

Green Energy and Technology

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Transient stability versus damping of electromechanical oscillations in power systems with embedded multi‐terminal VSC‐HVDC systems

Renedo

Rouco

García-Cerrada

et al. 2023

IET Generation Trans & Dist

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Multi‐terminal high‐voltage direct current technology based on voltage‐source converter stations (VSC‐MTDC) is expected to be one of the most important contributors to the future of electric power systems. In fact, among other features, it has already been shown how this technology can contribute to improve transient stability in power systems by the use of supplementary controllers. Along this line, this paper will investigate in detail how these supplementary controllers affect electromechanical oscillations, by means of small‐signal stability analysis. The paper analyses two control strategies based on the modulation of active‐power injections (P‐WAF) and reactive‐power injections (Q‐WAF) in the VSC stations which were presented in previous work. Both control strategies use global signals of the frequencies of the VSC‐MTDC system and they presented significant improvements on transient stability. The paper will provide guidelines for the design of these type of controllers to improve both large‐ and small‐disturbance angle stability. Small‐signal stability analysis (in Matlab) has been compared with non‐linear time domain simulation (in PSS/E) to confirm the results using CIGRE Nordic32A benchmark test system with a VSC‐MTDC system. The paper analyses the impact of the controller gains and communication latency on electromechanical‐oscillation damping. The main conclusion of the paper is that transient‐stability‐tailored supplementary controllers in VSC‐MTDC systems can be tuned to damp inter‐area oscillations too, maintaining their effectiveness.

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Development of a PSS/E tool for power-flow calculation and dynamic simulation of VSC-HVDC multi-terminal systems

Cited by 15 publications

References 0 publications

Coordinated Control in VSC-HVDC Multi-Terminal Systems to Improve Transient Stability: The Impact of Communication Latency

Coordinated Control in VSC-HVDC Multi-Terminal Systems to Improve Transient Stability: The Impact of Communication Latency

Hybrid AC/DC Electrical Power Grids in Active Buildings: A Power Electronics Perspective

Transient stability versus damping of electromechanical oscillations in power systems with embedded multi‐terminal VSC‐HVDC systems

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