Coordinated operation of a battery energy storage system and thermal generators for supply–demand balance maintenance and efficient use of photovoltaic energy

Kobayashi, Daiki; Masuta, Taisuke; Ohtake, Hideaki

doi:10.1002/eej.23209

Cited by 10 publications

References 5 publications

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Real‐time supply‐demand schedule update and operation for generators and battery energy storage system based on forecasted and actual photovoltaic power outputs

Yoshioka

Nishio

Takahashi

et al. 2023

Electrical Engineering Japan

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The photovoltaic (PV) power output might be frequently curtailed to maintain electricity supply‐demand balance in future power systems. In our previous study, we proposed a new method for updating the battery energy storage system (BESS) charge/discharge and the generator unit commitment (UC) schedules based on the forecasted and actual PV power outputs. The forecast dataset was updated every 3 h (eight times a day). Although the simulation results showed that the proposed method could reduce the supply‐demand imbalances, it was not clear whether the forecasted or actual values made contributions. Therefore, in this study, we propose and evaluate a real‐time scheduling and operation method using the forecasted and actual PV power outputs assuming that the forecasted dataset is updated only once a day. Numerical simulations of supply‐demand operations are conducted on the power system model of the Kanto area of Japan for one year. The results show that the previous study method has a slight advantage over proposed method in terms of curtailed PV energy and operational cost of thermal generators reduction, but the difference is very small, indicating that the contribution of the actual PV power outputs is greater than that of the forecasted PV power outputs.

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Real‐time supply‐demand schedule update and operation for generators and battery energy storage system based on forecasted and actual photovoltaic power outputs

Yoshioka

Nishio

Takahashi

et al. 2023

Electrical Engineering Japan

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Design of three-stage start-up optimal strategy based on fuzzy fractional-order proportion integration differentiation controller of pumped storage unit under low water head

Zhao

2022

Journal of Energy Storage

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Research on balance control strategy of lithium-ion battery energy storage system

Xu¹,

Sun²

2022

International Journal of Low-Carbon Technologies

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Lithium-ion batteries are widely used in grid energy storage, electric vehicles and other occasions because of their excellent performance. Passive equalization is widely used because of its high performance, but traditional passive equalization control strategies do not perform well. This paper proposes a new control strategy, which divides the battery pack into three state of charge (SOC) ranges according to the different SOC of the battery pack and different performance requirements. When the SOC of the battery pack is high, the maximum rechargeable capacity needs to be considered, the battery balancing should be realized in advance, and when the SOC of the battery is low, the maximum discharge capacity needs to be considered, the battery balancing should be delayed, and in other areas, it is the same as the traditional balancing control strategy. Moreover, the balance control strategy proposed in this paper keeps the high-performance battery at a lower voltage and the low-performance battery at a higher voltage, and the low-performance battery works with more favorable conditions, so that the battery pack is in a more balanced state. The experimental results show that the battery pack consisting of 4 cells in series can be almost fully charged, and the battery pack voltage is about 16.788V, during the discharge process, the equalization system hardly operates to ensure its maximum discharge capacity. The strategy proposed in this paper is simple and easy to implement and has better performance.

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Coordinated operation of a battery energy storage system and thermal generators for supply–demand balance maintenance and efficient use of photovoltaic energy

Cited by 10 publications

References 5 publications

Real‐time supply‐demand schedule update and operation for generators and battery energy storage system based on forecasted and actual photovoltaic power outputs

Real‐time supply‐demand schedule update and operation for generators and battery energy storage system based on forecasted and actual photovoltaic power outputs

Design of three-stage start-up optimal strategy based on fuzzy fractional-order proportion integration differentiation controller of pumped storage unit under low water head

Research on balance control strategy of lithium-ion battery energy storage system

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