Small-Signal analysis of an isolated power system controlled by a virtual synchronous machine

DaArco, Salvatore; Suul, Jon Are

doi:10.1109/epepemc.2016.7752041

Cited by 8 publications

(4 citation statements)

References 22 publications

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“…The modeling of the electrical power system is mapped to the VSG reference frame [74,75]. This has important features in the system modeling because it helps to avoid multiple reference frame transformations between the global sequence reference frame (used for modeling electrical systems in a convention converter phase-locked loop reference frame) and the local SRF (used for the VSG implementation of the controller) [68,76,77]. The voltage vector in the VSG-orientated sequence reference frame VVSG g is determined in Equation (22) when the voltage at the point of interconnect to the grid ( Vg ) is known.…”

Section: Reference Frame Orientation Of Vsgmentioning

confidence: 99%

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Overview of Virtual Synchronous Generators: Existing Projects, Challenges, and Future Trends

2022

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The rapid growth in renewable energy-based distributed generation has raised serious concerns about the grid’s stability. Due to the intrinsic rotor inertia and damping feature and the voltage (reactive power) control ability, traditional bulk power plants, which are dominated by synchronous generators (SG), can readily sustain system instability. However, converter-based renewable energy sources possess unique properties, such as stochastic real and reactive power output response, low output impedance, and little or no inertia and damping properties, leading to frequency and voltage disturbance in the grid. To overcome these issues, the concept of virtual synchronous generators (VSG) is introduced, which aims to replicate some of the characteristics of the traditional synchronous generators using a converter control technique to supply more inertia virtually. This paper reviews the fundamentals, different topologies, and a detailed VSG structure. Moreover, a VSG-based frequency control scheme is emphasized, and the paper focuses on the different topologies of VSGs in the microgrid frequency regulation task. Then, the characteristics of the control systems and applications of the virtual synchronous generators are described. Finally, the relevant critical issues and technical research challenges are presented, and future trends related to this subject are highlighted.

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Section: Reference Frame Orientation Of Vsgmentioning

confidence: 99%

“…The phase angle difference between PLL-orientated SRF V PLL 0 and VSG will be determined using the swing equation [68,78]. This can be actualized by Equation (23) [76].…”

Section: Reference Frame Orientation Of Vsgmentioning

confidence: 99%

Overview of Virtual Synchronous Generators: Existing Projects, Challenges, and Future Trends

2022

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“…In [10], a barrier function approach is taken to provide the safety conditions of the parameters in the microgrid. Recently, the small signal model of DERs with virtual inertia control has been derived in [11]. In this work, we intend to model the virtual inertia contribution of grid-forming and grid-following DERs with that of the synchronous machine model to analyze the impact.…”

Section: State-of-artmentioning

confidence: 99%

Impact of the Interaction of Synchronous Machines and Virtual Inertia Provisions on the Small Signal Stability of Microgrids

Subramanian¹,

Goundiam²,

Debusschere³

et al. 2021

CIRED 2021 - The 26th International Conference and Exhibition on Electricity Distribution

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With the increasing number of inverter-based resources in the distribution system, there is a growing possibility for the development of self-consuming energy communities. In the context of this transition, this work aims to study the interaction of synchronous and virtual inertia in low inertia microgrids, where the inertia is emulated synthetically by controlling the inverterbased resources to respond to the system frequency. The effect of the interaction of the grid-forming and grid-following inverter controls with synchronous machines on the oscillatory stability of the system has been explored.

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“…However, all the above SSS analysis has been made on droop controlled microgrids. Recently, the small signal model of DERs with virtual inertia control has been derived in [139,140].…”

Section: Sss Conditions On Frequency Response Parametersmentioning

confidence: 99%

Stability enhancement of inverter dominated power systems using virtual inertia control

Subramanian¹

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I have worked on the development of the proposed control strategies, their simulation/ validation and analysis in the different topics. The other notable contributions to the thesis are as follows:• Dr. Ujjal Manandhar guided me in setting up the testbench at the CERL, NTU, which was used for the droop control validation in Chapter 5.• Mr. Cedric Boudinet and Mr. William Norris helped me modify the connections at the FLIRT real-time testing facility at G2Elab.• Mr. Antoine Labonne and I had worked on setting up a power hardware-in-theloop experiment at the PREDIS, PDE facility, which could not be continued later due to the COVID 19 outbreak.• Assoc. Prof. Vincent Debusschere helped me frame the objectives of the respective researches, provided technical inputs, supervised my research, and proofread the manuscripts.

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Small-Signal analysis of an isolated power system controlled by a virtual synchronous machine

Cited by 8 publications

References 22 publications

Overview of Virtual Synchronous Generators: Existing Projects, Challenges, and Future Trends

Overview of Virtual Synchronous Generators: Existing Projects, Challenges, and Future Trends

Impact of the Interaction of Synchronous Machines and Virtual Inertia Provisions on the Small Signal Stability of Microgrids

Stability enhancement of inverter dominated power systems using virtual inertia control

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