A Self-Adaptive Inertia and Damping Combination Control of VSG to Support Frequency Stability

Li, Dongdong; Zhu, Qian; Lin, Shunfu; Bian, Xiaoyan

doi:10.1109/tec.2016.2623982

Cited by 408 publications

(205 citation statements)

References 4 publications

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“…In [6], a stability region of the VSG and the energy capacity of the ESS have been analyzed based on the swing equation. In [9][10][11] with continuously varying parameters have been proposed. In [12], a VSG controlled by fuzzy logic has been proposed.…”

Section: Introductionmentioning

confidence: 99%

A novel VSG model suitable for the analyses of static/transient stability and rated power/energy capacity of energy storage system

Koiwa

Inoo

Liu

et al. 2019

IEEJ Transactions Elec Engng

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This paper proposes a novel model for the analysis and design of a virtual synchronous generator (VSGs). To enhance the stability in power systems with distributed generators, the concept of VSG has been proposed. The VSG is designed based on the swing equation of a synchronous generator ignoring the dynamics of current flowing through an interconnection reactor. However, responses obtained with actual system are different from those calculated from the model. It implies that the VSG cannot be correctly analyzed and designed by using the conventional model. This paper constructs an accurate VSG model considering the dynamics of current. Moreover, we address the stability analysis of the VSG and reveal a relation between the parameters of VSG controller and the rated power/energy capacity of energy storage systems equipped with the VSG based on the proposed model.

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Section: Introductionmentioning

confidence: 99%

A novel VSG model suitable for the analyses of static/transient stability and rated power/energy capacity of energy storage system

Koiwa

Inoo

Liu

et al. 2019

IEEJ Transactions Elec Engng

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show abstract

“…A step-by-step method based on the small-signal model is proposed in [8], which provides a good reference to design the parameters of VSG. Literature [6,[19][20][21][22] pointed out that VSG control has an advantage in that its swing equation parameters can be adopted in real time to obtain a faster and more stable operation. However, the references above focused on improvement of transient performance.…”

Section: Introductionmentioning

confidence: 99%

Transient Stability Analysis of Islanded AC Microgrids with a Significant Share of Virtual Synchronous Generators

et al. 2018

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Abstract:As an advanced control method that could bring extra inertia and damping characteristics to inverter-based distributed generators, the virtual synchronous generator (VSG) has recently drawn considerable attention. VSGs are expected to enhance the frequency regulation capability of the local power grid, especially the AC microgrid in island mode. However, the cost of that performance promotion is potential instability. In this paper, the unstable phenomena of the islanded microgrid dominated by SGs and distributed generators (DSs) are addressed after mathematical modeling and detailed eigenvalue analyses respectively. The influence of VSG key parameters, e.g., virtual inertia, damping factor, and droop coefficient on system stability is investigated, and the corresponding mathematical calculation method of unstable region is obtained. The theoretical analysis is well supported by time domain simulation results. The predicted frequency oscillation suggests the consideration of stability constrain during the VSG parameters design procedure.

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“…However, these strategies can not be applied to VSG directly, due to the difference between VSG and traditional control strategies. Some research about the oscillation damping by VSG are presented in [22][23][24][25][26][27][28], and one of the main methods of suppressing oscillation by VSG is to dynamically adjust the control parameters during the transient process in existing research [22][23][24][25]. A self-tuning virtual synchronous machine (VSM) is proposed in [22].…”

Section: Introductionmentioning

confidence: 99%

“…In [23], a new control equation of VSG and a damping control approach based on linear control theory is proposed to solve the output power oscillation of VSG. The self-adaptive parameter control is also used in VSG to realize the power system stabilization [24,25]. However, the above research lacks the detailed theoretical analysis of the influence of the VSG on the damping characteristics of the system.…”

Section: Introductionmentioning

confidence: 99%

Virtual Synchronous Generator Based Auxiliary Damping Control Design for the Power System with Renewable Generation

Gao

Xia

Chen³

et al. 2017

Energies

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Abstract:Aiming for large-scale renewable energy sources (RES) integrated to power systems with power electronic devices, the technology of virtual synchronous generator (VSG) has been developed and studied in recent years. It is necessary to analyze the damping characteristics of the power system with RES generation based on VSG and develop its corresponding damping controller to suppress the possible low frequency oscillation. Firstly, the mathematical model of VSG in a per unit (p.u) system is presented. Based on the single-machine infinite bus system integrated with an RES power plant, the influence of VSG on the damping characteristics of the power system is studied qualitatively by damping torque analysis. Furthermore, the small-signal model of the considered system is established and the damping ratio of the system is studied quantitatively by eigenvalue analysis, which concluded that adjusting the key control parameters has limited impacts on the damping ratio of the system. Consequently, referring to the configuration of traditional power system stabilizer (PSS), an auxiliary damping controller (ADC) for VSG is designed to suppress the low frequency oscillation of the power system. Finally, simulations were performed to verify the validity of theoretical analysis and the effectiveness of designed ADC.

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A Self-Adaptive Inertia and Damping Combination Control of VSG to Support Frequency Stability

Cited by 408 publications

References 4 publications

A novel VSG model suitable for the analyses of static/transient stability and rated power/energy capacity of energy storage system

A novel VSG model suitable for the analyses of static/transient stability and rated power/energy capacity of energy storage system

Transient Stability Analysis of Islanded AC Microgrids with a Significant Share of Virtual Synchronous Generators

Virtual Synchronous Generator Based Auxiliary Damping Control Design for the Power System with Renewable Generation

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