Control Strategy of BESS for Providing Both Virtual Inertia and Primary Frequency Response in the Korean Power System

Choi, Woo Yeong; Kook, Kyung Soo; Yu, Ga Ram

doi:10.3390/en12214060

Cited by 18 publications

(12 citation statements)

References 16 publications

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“…Since virtual inertia control can mitigate the system frequency variation, virtual inertia control is effective as the frequency is deviating from the nominal frequency. 16 However, in the phase of frequency recovery, the virtual inertia control can hinder the system frequency from recovery. Thus, the virtual negative inertia control can be used during the phase of frequency recovery to speed up the recovery process.…”

Section: Virtual Negative Inertia Controlmentioning

confidence: 99%

Comprehensive control method of energy storage system to participate in primary frequency regulation with adaptive state of charge recovery

Zhu

2021

Int Trans Electr Energ Syst

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This paper proposed a comprehensive control method for energy storage system (ESS) participating in primary frequency regulation (PFR). The integrated control strategy consists of PFR stage and "stage of charge" (SOC) recovery stage. In the PFR stage, the virtual droop control and virtual inertia control are combined and applied in the frequency deterioration phase to reduce the frequency deviation. The virtual negative inertia control coupled with virtual droop control is used in the frequency recovery phase to accelerate frequency recovery. In the SOC recovery stage, an adaptive SOC recovery control method is proposed. The SOC recovery control is performed while the frequency is within the dead zone, and the recovery power of ESS is based on the SOC to avoid overcharging and over-discharging. The proposed SOC recovery control can restore the SOC to a proper range which ensures the potential for ESS to participate in the next PFR process. It also reduces the number of SOC recovery starts compared with the fixed target SOC method and is beneficial to prolong the cycle life of ESS. Simulation outcomes demonstrate that the proposed comprehensive control method can efficiently enhance the frequency regulation performance and restore the SOC to the target range.

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Section: Virtual Negative Inertia Controlmentioning

confidence: 99%

Comprehensive control method of energy storage system to participate in primary frequency regulation with adaptive state of charge recovery

Zhu

2021

Int Trans Electr Energ Syst

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“…BESS is considered being a significant catalyst for integrating RE into the grid globally [1]. BESS offers several technical features that can provide adequate support to the grid to handle the variability of wind and solar energy sources, such as energy time-shifting, voltage ramp up or load following, frequency regulation and peak shaving [1,2,[28][29][30][31]. In [30], the authors recognise 13 services that can be offered by BESSs.…”

Section: Battery Energy Storage System (Bess) For Integrating Renewabmentioning

confidence: 99%

Electric Rickshaw Charging Stations as Distributed Energy Storages for Integrating Intermittent Renewable Energy Sources: A Case of Bangladesh

Hasan

2020

Energies

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This exploratory research outlines an opportunity for increasing renewable energy share in Bangladesh by using electric rickshaws (e-rickshaws) as a catalyst. The overall objective of this research is to show how to utilise an existing opportunity, such as e-rickshaws, as energy storage options for integrating renewable energy sources. It proposes a grid-connected local energy system considering a battery swapping and charging station (BSCS) for e-rickshaws as a community battery energy storage (CBESS). This system was simulated using the HOMER Pro software. The simulation results show that such systems can help communities significantly reduce their dependency on the national grid by integrating solar PV locally. The proposed BSCS also shows an opportunity for battery demand reduction and circular battery management for electric rickshaws. The research also discusses the economies of scale of the proposed method in Bangladesh, and pathways for implementing microgrids and smart energy systems. The innovative concepts presented in this research will start a policy-level dialogue in Bangladesh for utilising local opportunities to find an alternative energy storage solution and provide momentum to the researchers for further studies.

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“…To solve these problems, studies have improved WPPs operation by using energy storage systems (ESSs). These system elements provide ancillary services to enhance the power quality and the power system stability [23][24][25]. The operation of ESS is composed of charging and discharging features.…”

Section: Introductionmentioning

confidence: 99%

A Study on Frequency Stability and Primary Frequency Response of the Korean Electric Power System Considering the High Penetration of Wind Power

et al. 2022

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The high penetration of wind power decreases the system inertia and primary frequency reserve while replacing the conventional synchronous generators (SGs). Therefore, if the system operator does not take appropriate action on the remaining generation units (GUs) operation, high penetration of wind power will aggravate the frequency stability. To solve this problem, wind power plants (WPPs) may provide the inertial response and primary frequency response (PFR) to support the frequency stability. However, due to the variability of renewable energy, WPPs may not provide adequate frequency response whenever it is required. This paper proposes an algorithm to determine the operation of GUs to provide appropriate PFR for a power system with high penetration of wind power. Through the proposed algorithm, it calculates the required PFR to restore the decreased frequency stability caused by the high penetration of wind power. Then, while considering the available PFR from WPPs, it redetermines the droop coefficient of SGs governor to provide the sufficient PFR to recover the frequency stability. Finally, the effectiveness of the proposed algorithm is verified on the practical Korean electric power system.

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Control Strategy of BESS for Providing Both Virtual Inertia and Primary Frequency Response in the Korean Power System

Cited by 18 publications

References 16 publications

Comprehensive control method of energy storage system to participate in primary frequency regulation with adaptive state of charge recovery

Comprehensive control method of energy storage system to participate in primary frequency regulation with adaptive state of charge recovery

Electric Rickshaw Charging Stations as Distributed Energy Storages for Integrating Intermittent Renewable Energy Sources: A Case of Bangladesh

A Study on Frequency Stability and Primary Frequency Response of the Korean Electric Power System Considering the High Penetration of Wind Power

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