Coordinated control strategy for a PV-storage grid-connected system based on a virtual synchronous generator

Zhang, Xing; Gao, Qian; Guo, Zixuan; Zhang, Haizheng; Li, Ming; Li, Fēi

doi:10.1016/j.gloei.2020.03.003

Cited by 20 publications

(16 citation statements)

References 5 publications

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“…In the case of PV generation, literature [60,61] presented a PV-VSG technology, which considers the dynamic features of PV power, allowing for many PV units to connect to the grid via VSG. It enables the connect-off-grid operation that is both flexible and reliable, and it is critical to enabling grid-friendly access distributed PV power generation.…”

Section: Application Of Vsgmentioning

confidence: 99%

Review on Virtual Inertia Control Topologies for Improving Frequency Stability of Microgrid

Idan

Mahdi

Wahhab

2022

ETJ

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 RESs connected with the inverter have no physical inertia compared with the synchronous generator.  VSG provides the required inertia under sudden disturbances in a microgrid.  VSG controller emulates droop controller to decrease the frequency deviation.Renewable energy sources (RESs), such as solar and wind power, offer new technologies for meeting the world's energy requirements . The distributed generator (DG) based on RESs has no rotational mass and damping effects compared to the traditional power system with synchronous generators (SG). However, the increasing penetration level of DG based on RESs causes low inertia, a dampening effect on the dynamic performance of the grid, and stability. A solution to improve the frequency stability of such a system is to provide virtual inertia by using virtual synchronous generators (VSG), which can be created by using short-term energy storage and a power inverter, and a suitable control mechanism. The VSG control mimics the dynamics of the rotation SG and enhances the power system's stability. This paper presents an overview of various topologies on virtual inertia, VSG concepts, control techniques, and VSG applications. Finally, the VSG challenges and future research will be discussed.

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Section: Application Of Vsgmentioning

confidence: 99%

Review on Virtual Inertia Control Topologies for Improving Frequency Stability of Microgrid

Idan

Mahdi

Wahhab

2022

ETJ

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“…China has also taken the use of renewable energy to cope with energy depletion and environmental problems as an important development strategy and put forward the "3060" dual carbon goal [1]. The large-scale access of new energy generation such as wind power and photovoltaic makes the grid gradually present characteristics of low inertia [2], which brings many challenges to the safe and stable operation of the power system [3]. For example, a series of sub-synchronous oscillation accidents occurred in Guyuan wind farm in Hebei from 2012 to 2015, the sub/super-synchronous oscillation accident caused by a wind farm occurred in Hami, Xinjiang in 2015 under a weak grid, and the sub-synchronous oscillation accident occurred in ERCOT in the United States in 2017.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the grid-connected inverter interface power supply is mainly divided into two basic control methods: currentsource inverter based on PLL and voltage-source inverter based on droop control [3].…”

Section: Introductionmentioning

confidence: 99%

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Stability analysis of voltage-source inverter under weak grid

Song,

Wang,

Zhao

et al. 2023

Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023)

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The large-scale access of new energy generation based on grid-connected inverters makes the grid have the characteristics of weak damping and low inertia, so the grid impedance is not negligible in most cases. As the power electronic interface between the new energy and the grid, the interaction between the inverter and the grid causes a series of oscillation problems. In this paper, the interaction between the voltage-source inverter (VSI) and the grid based on droop control is studied around the small-signal stability problem of the inverter after the new energy generation is connected to the weak grid. In this paper, the stability analysis of the VSI is carried out by establishing a state -space small-signal model, and the model is built in Matlab/simulink to verify the validity of the analysis results.

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“…In the literature, many techniques are proposed to achieve better performance of the PV-grid system. A coordinated control [14] is used to reduce the output variation. In [15], with a nonlinear command, the THD reaches 2.44%.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of meta-heuristic and conventional optimization techniques of grid connected photovoltaic system

Traoré

Ndiaye

Mbodji

2021

IJPEDS

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This paper presents the meta-heuristic and conventional optimizations techniques for the grid connected photovoltaic solar system. The perturb and observe (P&O) and particle swarm optimization (PSO) algorithms are proposed to track the maximum power point (MPP) of the photovoltaic solar system (PVSS). The regularization of the current supplied into the grid is ensured by the proportional integral (PI) corrector whose parameters are generated by the genetic algorithm (GA). The results of these two MPPT methods are compared and showed that the PSO is more efficient than the P&O. The use of GA algorithm to determine PI parameters allowed to obtain 0.89% of total distortion harmonic (THD).

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Coordinated control strategy for a PV-storage grid-connected system based on a virtual synchronous generator

Cited by 20 publications

References 5 publications

Review on Virtual Inertia Control Topologies for Improving Frequency Stability of Microgrid

Review on Virtual Inertia Control Topologies for Improving Frequency Stability of Microgrid

Stability analysis of voltage-source inverter under weak grid

A comparative study of meta-heuristic and conventional optimization techniques of grid connected photovoltaic system

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