Power allocation method of battery energy storage system considering state balance in smoothing photovoltaic power fluctuations

Zhang, Jing; Hou, Lei; Diao, Xiaohong; Yang, Xin; Tang, Panpan; Cao, Xiaohong

doi:10.3389/fenrg.2022.965812

Cited by 3 publications

(2 citation statements)

References 41 publications

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“…Many smooth measures have been developed to smooth PV power fluctuation, which are necessary for grid-connected PV [6]. The battery energy storage system (BESS) has been reported to smooth the fluctuation of PV power [7], and obtain grid-connected PV power by improving the swing gate trend algorithm through the Aquila optimizer. Moreover, the dynamic grouping principle, considering the state of health (SOH) and state of charge (SOC) of the battery, is designed to effectively smooth the power fluctuation of PV and balance SOH and SOC more quickly and accurately.…”

Section: Introductionmentioning

confidence: 99%

Capacity Optimal Allocation Method and Frequency Division Energy Management for Hybrid Energy Storage System Considering Grid-Connected Requirements in Photovoltaic System

Jin

et al. 2023

Energies

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The coordination between a hybrid energy storage system (HESS) and photovoltaic (PV) power station can significantly reduce grid-connected PV power fluctuations. This study proposes a HESS capacity optimal allocation method considering the grid-connected PV requirements. Firstly, based on the power fluctuation requirements in the PV power station grid-connected regulations, the maximum power point tracking working point switching control is performed for the PV power station, from which the grid-connected PV power and HESS power are obtained. Then, a capacity optimal allocation method and frequency division energy management strategy (EMS) for HESS is proposed to find the energy response and power response of each energy storage source. Furthermore, a multi-objective optimization function with HESS cutoff frequency as the independent variable is constructed, and the input cost of HESS and the life loss of the lithium battery are optimized. Finally, the overall strategy is compared and analyzed under the scenarios of three typical PV power fluctuations. Simulation results show that the control strategy has a good smoothing effect on PV power fluctuations. From the perspective of the annual comprehensive input cost, HESS realizes the optimal capacity allocation when the cutoff frequency is 0.0066 Hz.

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Section: Introductionmentioning

confidence: 99%

Capacity Optimal Allocation Method and Frequency Division Energy Management for Hybrid Energy Storage System Considering Grid-Connected Requirements in Photovoltaic System

Jin

et al. 2023

Energies

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“…In order to better play the value of the energy storage device, it is necessary to optimize the location and capacity of the energy storage device. Literature [1] introduced the capacity optimization allocation method of energy storage power station, but did not analyze the installation position of energy storage power station. Literature [2] conducted a comprehensive evaluation from the technical perspective of energy storage, but did not conduct an evaluation and analysis from the economic perspective.…”

Section: Introduction *mentioning

confidence: 99%

Comprehensive Benefit Evaluation Analysis And Application Research of Energy Storage

Shi,

Li,

Zhao

et al. 2023

E3S Web Conf.

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In recent years, the penetration rate of renewable energy in the power system has increased year by year, and the allocation of energy storage is an important development trend to improve the operation stability of the grid-connected power system containing renewable energy. This paper first analyzes the basic concept and operation principle of energy storage devices, and then explains the costs and benefits of energy storage devices. Finally, the industrial park and energy storage power station are used as practical application scenarios to verify the correctness of the proposed method. The example results show that energy storage should be installed in a place where the system network loss is minimal and the reliability of power supply can be maximized, and the capacity of the energy storage system should match the load capacity of the bus bar of the installation site, so as to achieve the greatest comprehensive benefits.

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Identification model for weak areas of transient energy balance in EESs based on dynamic grid partitioning

et al. 2023

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In response to the high uncertainty of large-scale new energy output in the electrical energy system (EES) and the weak controllability of energy output at multiple time scales, this paper proposes a weak grid identification model for transient energy balance in EESs based on grid partitioning, which has an increasingly complex impact on the weak areas of transient energy balance in the sending-end network. First, the accumulation of port energy during transient faults and the propagation mechanism of port energy in the sending-end system were studied, and an EES transient energy propagation mechanism model was established. Then, considering the energy balance support requirements of nodes, an EES grid partitioning model was established. Afterward, based on the characteristics of transient energy propagation and a grid partitioning model, an identification model for weak areas of transient energy balance in EESs was constructed. Finally, based on actual operating data, numerical simulations were conducted, and the results showed that the proposed weak grid identification model for transient energy balance can meet the requirements for transient stability analysis and transient energy balance characteristic analysis during actual operation of power grids.

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Power allocation method of battery energy storage system considering state balance in smoothing photovoltaic power fluctuations

Cited by 3 publications

References 41 publications

Capacity Optimal Allocation Method and Frequency Division Energy Management for Hybrid Energy Storage System Considering Grid-Connected Requirements in Photovoltaic System

Capacity Optimal Allocation Method and Frequency Division Energy Management for Hybrid Energy Storage System Considering Grid-Connected Requirements in Photovoltaic System

Comprehensive Benefit Evaluation Analysis And Application Research of Energy Storage

Identification model for weak areas of transient energy balance in EESs based on dynamic grid partitioning

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