A comprehensive assessment of the state-of-the-art virtual synchronous generator models

Suvorov, Aleksey; Askarov, Alisher; Kievets, Аnton; Rudnik, Vladimir

doi:10.1016/j.epsr.2022.108054

Cited by 33 publications

(9 citation statements)

References 18 publications

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“…In power systems, the synchronous generator (SG) is represented by a third-order model, where the excitation power unit is represented by a first-order model 21 . Assuming that all turbines in a wind farm have the same type and operating conditions, turbine parameters can be approximated to the calculated parameters of a single turbine 22 . Thus, the equivalent model of a wind farm can be described by the set of dynamic characteristic equations of a DFIG, while the doubly-fed generator model is shown in the Appendix .…”

Section: Dynamic Modelingmentioning

confidence: 99%

Effect of DFIG control parameters on small signal stability in power systems

Liu

Wang

et al. 2023

Sci Rep

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The doubly-fed induction generator (DFIG) with virtual inertia control and reactive damping control gives a renewable energy generation system inertia and damping characteristics similar to those of a thermal power plant, and the parameters of the control strategy have a direct impact on the small-signal stability of the system. This paper firstly introduces the operating characteristics and control strategies of DFIG-based damping control and virtual inertia control, establishes a small-signal model of the control-based DFIG integrated interconnected system, and investigates the effects of virtual inertia and reactive damping values on the small-signal stability of the system; then, the maximum damping ratio of the interval oscillation mode in small disturbance analysis is taken as the optimization objective, and the control parameters are the optimization variables. An optimization method of inertia and damping parameters is established for improving the small disturbance stability of the system. The results show that the optimization procedure could improve the damping ratio of the interval oscillation mode while ensuring the system frequency. The effects of virtual inertia and reactive damping values on the small signal stability of the system are investigated, and an optimal allocation model and method for virtual inertia used to improve the small disturbance stability of the system is proposed.

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Section: Dynamic Modelingmentioning

confidence: 99%

Effect of DFIG control parameters on small signal stability in power systems

Liu

Wang

et al. 2023

Sci Rep

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“…The reformulation in Equation ( 30) is achieved using the well-known big-M technique. This reformu- 11), ( 13), (29), discretized{(30)}}…”

Section: Frequency Security Assessment Problem Formulationmentioning

confidence: 99%

“…In assessing frequency security during the load frequency control process, a slow dynamic procedure, IBR control typically emulates virtual synchronous generators (VSGs) [28]. For inertial response and primary high‐speed frequency regulation, specifically in load frequency control in this section, a second‐order model effectively represents VSG properties for gradual dynamic analysis [29].…”

Section: Load Frequency Control Of Power Systems With Inverter‐based ...mentioning

confidence: 99%

Optimal classification tree for frequency security assessment of power systems with inverter‐based resources reinforcement

Li,

Sun,

Dan

et al. 2023

IET Control Theory & Appl

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Frequency security is the premise of realizing the net‐zero transition. A novel assessment scheme is proposed to quantify the frequency security levels of transmission systems under different inverter‐based resources (IBRs) and their control parameter combinations. A novel system frequency dynamic model is proposed as a parametric optimization method, where the saturation of generators, energy storage systems, and renewable energy sources is incorporated as differential algebra equations. This problem is further reformulated as a mixed‐integer linear programming problem to generate a sufficient amount of data under different IBR integration and control parameters. The frequency security assessment problem is formulated as a data‐driven multivariate classification problem, which is solved by the optimal classification tree (OCT) algorithm with better interptretionability. Simulations are conducted on a transmission system. Numerical results indicate that the proposed system frequency dynamic model can capture the frequency dynamic under different IBR reinforcement plans and the OCT can realize accurate classification of the synthetic data regarding frequency security.

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“…Only when the values of the three are consistent, can the grid be stably connected. You can refer to the parameter requirements of reference [7,8].…”

Section: Introductionmentioning

confidence: 99%

Improved presynchronization control strategy based on virtual synchronous generator without PLL

Chen,

Bai,

Zhang

2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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Virtual synchronous generator (VSG) has similar external characteristics to traditional synchronous generator, which helps to overcome the phenomenon of inertia attenuation when the power is connected to the grid, but also has the phenomenon of large interference voltage and impulse current at the moment of grid connection. To solve this problem, a synchro model is constructed for the first time. According to the theory of phase-locked loop vector, An optimized pre-synchronization control strategy ignoring Phase Locked Loop is provided to simplify the pre-synchronization control process, reduce the instantaneous impact flow of grid-connected, thus reducing the change of grid-connected time, and achieve a smooth transition from off-grid to grid-connected state. Finally, an improved VSG control module is built in MATLAB/Simulink, and the simulation results prove the correctness and effectiveness of the improved control method.

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A comprehensive assessment of the state-of-the-art virtual synchronous generator models

Cited by 33 publications

References 18 publications

Effect of DFIG control parameters on small signal stability in power systems

Effect of DFIG control parameters on small signal stability in power systems

Optimal classification tree for frequency security assessment of power systems with inverter‐based resources reinforcement

Improved presynchronization control strategy based on virtual synchronous generator without PLL

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