Damping Low-Frequency Oscillations in Power Systems Using Grid-Forming Converters

Rodriguez-Amenedo, José Luis; Arnaltes, Santiago

doi:10.1109/access.2021.3130333

Cited by 24 publications

(9 citation statements)

References 33 publications

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“…The active and reactive power controllers are described by ( 1), ( 2), (11), and ( 12), and they implement proportional-integral controls. In the case of the active power controller, the reference power p re f is given by (10), including the additional synthetic inertia control. The derivative-based control is modelled with ( 5), (8), and ( 9), adopting a filtered derivative implementation.…”

Section: Electromechanical Oscillations In Converter-dominated Power ...mentioning

confidence: 99%

“…These two control concepts and the related stability challenges have been studied in several works [3][4][5][6][7][8][9][10][11][12][13][14]. The work in [3] stresses that the controller settings of converter-based resources significantly impact the stability properties of the system.…”

Section: Introductionmentioning

confidence: 99%

“…The small-signal analysis shows that grid-forming converters exhibit worse damping than grid-following, especially for local oscillatory modes. Other works [9][10][11] remark that proper modifications applied to the converter's control structure can enhance the dynamic characteristics offered to the system, both in the case of grid-following and grid-forming control. Few studies address the impact of non-synchronous generation sources on the power-frequency oscillations of the system [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

Musca

González-Longatt

Sánchez³

2022

Energies

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The oscillatory behaviour of the power system is an aspect that is significantly affected by the increasing integration of converter-based generation sources. Several works address the impact of non-synchronous generation on the operation of the system from different points of view, but only a few studies focus on power-frequency oscillations with a prevalence of generation sources interfaced through power electronics. A lack of research can be found in particular in the comparative analysis of the two main control strategies for power converters, namely grid-following and grid-forming. The article aims to contribute to this direction, starting from a theoretical analysis of the two control structures and then examining the case study of an existing transmission system. The research provides a specific insight into the fundamental aspects related to synchronisation mechanism and inertial capabilities of both grid-following with synthetic inertia and grid-forming controls. The difference in the relationship between synchronisation unit and inertial capability is recognised as the fundamental aspect determining the different impacts on the oscillatory characteristics of the system. The observation derived in the theoretical analysis is then applied to an actual power system with a high predominance of converter-based generation, considering the Colombian interconnected national system as a case study.

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Section: Electromechanical Oscillations In Converter-dominated Power ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

Musca

González-Longatt

Sánchez³

2022

Energies

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“…The droop-based control provides grid-forming functionalities through droop controls on active and reactive power, whereas the virtual synchronous machine is generally based on the emulation of the dynamics of the synchronous machines. The damping characteristics of power systems with high shares of gridforming converters have been studied in different works [20]- [22]. However, the participation of grid-forming converters in the wide-area control of interconnected power systems has not been either proposed nor investigated yet.…”

Section: Introductionmentioning

confidence: 99%

Wide-Synchronization Control for Power Systems With Grid-Forming Converters

Musca,

Sanseverino,

Zizzo

et al. 2024

IEEE Trans. Power Syst.

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The article presents a novel wide-area control for power systems with grid-forming converters. The concept of the proposed wide-synchronization control is first introduced, and a theoretical proof is offered. A simple yet effective methodology for the tuning of the control is also derived. The concept of wide-synchronization control is then applied to the actual case of the European power system, taken into examination with an appropriate large-scale dynamic model. The results of the analysis indicate that the proposed wide-synchronization control leads to a considerable improvement of the dynamic characteristics of the system. The aspects related to latencies and energetic requirements are also investigated. A roadmap for further developments of the concept is finally discussed.

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“…Low-frequency oscillation (LFO) is one of the most typical small-signal stability problems in modern power systems [1]. The most popular analysis methods for the problem are modal analysis method [2]- [6] and damping torque analysis method [7]- [14]. The former provides eigenvalues, eigenvectors, by which the information such as frequency, damping ratio, participation level, etc., can be obtained.…”

Section: Introductionmentioning

confidence: 99%

A Method for Evaluating the Impact of Controllers and Wind Turbine Generators on Low-Frequency Oscillation

et al. 2023

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Based on the celebrated Generalized Nyquist Criterion, this paper presents a new frequencydomain method to analyze the impact of governor-turbine systems (GTSs), power system stabilizers (PSSs) and wind turbine generators (WTGs) on small disturbance stability in power systems. Compared with other common analysis method, the new method can avoid the calculations of eigenvalues, eigenvectors and residues, and the impact of multiple controllers or WTGs can be obtained using simple matrix operations. In addition, the method is intuitive for users since the stability analysis results can be displayed in the complex plane directly. The new method indicates that the impact of controllers and WTGs on power system is determined by the phase of certain elements in the transfer function matrices of controllers, WTGs and synchronous grid. Based on the information provided by the afore-mentioned transfer function matrices, the parameters of controllers can be optimized properly. The proposed method has been tested using the data of a four-machine two-area system and a regional power grid in China. The results demonstrate that the effect of controllers and WTGs can be conveniently identified, and the effectiveness of parameter tuning for controllers is verified.INDEX TERMS Frequency response, governor-turbine systems (GTS), low-frequency oscillation (LFO), power system stabilizers (PSS), wind turbine generator (WTG).

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Damping Low-Frequency Oscillations in Power Systems Using Grid-Forming Converters

Cited by 24 publications

References 33 publications

Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

Wide-Synchronization Control for Power Systems With Grid-Forming Converters

A Method for Evaluating the Impact of Controllers and Wind Turbine Generators on Low-Frequency Oscillation

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