Modeling and analysis approaches for small‐signal stability assessment of power‐electronic‐dominated systems

Cheah-Mañé, Marc; Egea‐Àlvarez, Agustí; Prieto‐Araujo, Eduardo; Mehrjerdi, Hasan; Gomis‐Bellmunt, Oriol; Xu, Lie

doi:10.1002/wene.453

Cited by 7 publications

(5 citation statements)

References 80 publications

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“…In practice, SSSA has been mostly used for detecting insufficient damping of power oscillations, which are mitigated through power systems stabilizers (PSS) but has also found applications in voltage stability and subsynchronous resonance analysis. In recent years, applications of SSSA have been extended to power-electronic-dominated systems [7], being adapted into frequency-domain and impedance-based methods, and being employed in model order reduction techniques [59].…”

Section: Small Signal Stability Analysismentioning

confidence: 99%

Slow-Interaction Converter-Driven Stability in the Distribution Grid: Small-Signal Stability Analysis With Grid-Following and Grid-Forming Inverters

Singh,

Debusschere,

Hadjsaid

et al. 2024

IEEE Trans. Power Syst.

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Inverter-based resources (IBRs) are changing the dynamics of medium-voltage distribution grids (MVDGs), leading to concerns over slow-interaction converter-driven stability (SICDS). Although researchers have proposed numerous devicelevel solutions for IBR stability, culminating in the promotion of grid-forming (GFM) as opposed to grid-following (GFL) inverters, a system-level analysis from the point-of-view of the distribution system operator (DSO) is still lacking. As a first step toward standardization, this paper provides some guiding principles for DSOs to prevent SICDS issues in MVDGs, by performing small-signal stability analysis and selecting a set of key parameters from state-of-the-art GFL and GFM models. By imposing bounds for these key parameters, DSOs could manage small-signal interactions between IBRs, as exemplified in the last section of this paper over a 2-IBRs study case, later scaled to a multi-inverter configuration with five inverters in a CIGRE medium voltage distribution benchmark network.

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Section: Small Signal Stability Analysismentioning

confidence: 99%

Slow-Interaction Converter-Driven Stability in the Distribution Grid: Small-Signal Stability Analysis With Grid-Following and Grid-Forming Inverters

Singh,

Debusschere,

Hadjsaid

et al. 2024

IEEE Trans. Power Syst.

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“…The analytical method used may be conditioned by the control algorithm and the form of disturbances. Some of these techniques are: model reduction technique, coherency and aggregation (CA) technique [17]. CA technique is based on the inherent characteristics, such as network admittances, generator inertias, and loads to obtain reduced model in the form of non-linear power systems [18].…”

Section: Introductionmentioning

confidence: 99%

Small‐signal rotor angle stability of multi‐virtual synchronous machine (n‐VISMA) microgrid

Sanusi,

Beck

2024

IET Generation Trans & Dist

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Autonomous microgrid is known to lack appropriate inertia and damping for grid stabilization. Due to this, virtual synchronous machine (VISMA) has been introduced to provide necessary ancillary services through control of power converters. In a multi‐VISMA (n‐VISMA) microgrid, relative rotor angle stability of the power system is dependent on the active power balance after small perturbation. Thus, the use of relevant analytical models are essential issues for microgrid stability analysis. This paper presents a comprehensive small‐signal stability analysis to study inherent electromechanical oscillations in the virtual rotors. The subsystems of the microgrid consisting of VISMA, network, load and the outer power control were all modelled in Synchronous Reference Frame. The small‐signal model (SSM) was tested on IEEE‐9 bus system with VISMA replacing electromechanical synchronous machines on the network. To validate the developed numerical analytics, dynamic responses of the SSM are compared with those of the non‐linear (NL) system dynamics and the results reveal that the developed linearized SSM is sufficient to accurately characterize behaviour of the VISMA microgrid when operated in autonomous mode. Eigenvalues analysis and parameter sensitivities of the critical modes were investigated. Oscillatory participations of the VISMAs and steady state stability limit of the microgrid have also been investigated.

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“…Power-electronic-based devices are expected to have a relevant impact on power system stability [13], for smalldisturbance [14][15][16][17] and large-disturbance phenomena [18]. Although it is clear that the main aplication of VSC-HVDC systems is power transmission, they can also help to improve the operation of power systems by means of supplementary controllers [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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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Modeling and analysis approaches for small‐signal stability assessment of power‐electronic‐dominated systems

Cited by 7 publications

References 80 publications

Slow-Interaction Converter-Driven Stability in the Distribution Grid: Small-Signal Stability Analysis With Grid-Following and Grid-Forming Inverters

Slow-Interaction Converter-Driven Stability in the Distribution Grid: Small-Signal Stability Analysis With Grid-Following and Grid-Forming Inverters

Small‐signal rotor angle stability of multi‐virtual synchronous machine (n‐VISMA) microgrid

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

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