Frequency regulation method with congestion management using renewable energy curtailment

Bae, Hyangryul; Tsuji, Takeshi; Oyama, Tsutomu; Uchida, Kenko

doi:10.1109/pesgm.2016.7741811

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…However, some generation technologies, such as solar and wind energy systems, are intermittent and do not supply constant power. To counteract the intermittent nature of these energy sources and to meet the goals of energy plans, a significant increase in frequency regulation of the energy grid is needed to keep the electrical grid stable [3].…”

Section: Introductionmentioning

confidence: 99%

Emissions Effects of Energy Storage for Frequency Regulation: Comparing Battery and Flywheel Storage to Natural Gas

Pareis

Hittinger

2021

Energies

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With an increase in renewable energy generation in the United States, there is a growing need for more frequency regulation to ensure the stability of the electric grid. Fast ramping natural gas plants are often used for frequency regulation, but this creates emissions associated with the burning of fossil fuels. Energy storage systems (ESSs), such as batteries and flywheels, provide an alternative frequency regulation service. However, the efficiency losses of charging and discharging a storage system cause additional electrical generation requirements and associated emissions. There is not a good understanding of these indirect emissions from charging and discharging ESSs in the literature, with most sources stating that ESSs for frequency regulation have lower emissions, without quantification of these emissions. We created a model to estimate three types of emissions (CO2, NOX, and SO2) from ESSs providing frequency regulation, and compare them to emissions from a natural gas plant providing the same service. When the natural gas plant is credited for the generated electricity, storage systems have 33% to 68% lower CO2 emissions than the gas turbine, depending on the US eGRID subregion, but higher NOX and SO2 emissions. However, different plausible assumptions about the framing of the analysis can make ESSs a worse choice so the true difference depends on the nature of the substitution between storage and natural gas generation.

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Section: Introductionmentioning

confidence: 99%

Emissions Effects of Energy Storage for Frequency Regulation: Comparing Battery and Flywheel Storage to Natural Gas

Pareis

Hittinger

2021

Energies

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“…A number of researches have investigated strategies to flatten the duck curve, which can be categorized into four types. The first one is to apply renewable generation curtailment as reported in [6][7][8]. This strategy is easy to implement with small adjustments to the controllers.…”

Section: Introductionmentioning

confidence: 99%

Game-Theory Based V2G Coordination Strategy for Providing Ramping Flexibility in Power Systems

et al. 2020

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Large-scale integration of renewable generation into power systems invariably affects the system ramping capability. However, the vehicle-to-grid (V2G) concept that allows for using electric vehicles (EVs) as energy storages with the capability of bidirectional energy transfer between the EVs and the grid, can be employed to mitigate the above adverse effect. This paper proposes a game-theory-based V2G coordination strategy that uses EV clusters to improve ramping flexibility in power systems. In the proposed strategy, the V2G concept, representing the interactions between the distribution system operator (DSO) and EV clusters, is formulated as a Stackelberg game. The DSO acts as a leader who decides the charging prices for the buses to which the EV clusters are connected, while the EV clusters simply serve as followers, scheduling their own charging and discharging. This bi-level model is further reduced to a single-level, mixed-integer second-order cone programming (MISOCP) problem based on the Karush-Kuhn-Tucker (KKT) conditions, the strong duality theorem and second-order cone (SOC) relaxation. The performance of the proposed V2G coordination strategy on a modified IEEE 33-bus system connecting EV clusters and PV generations is investigated through simulations, and the results demonstrate that the largest ramp of the system can be reduced by up to 39% when EV clusters are providing flexibility, while the EV clusters can also have greatly reduced charging costs.

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Frequency control in power system based on balancing market considering wind power forecasting error

Bae

Tsuji

Oyama

et al. 2017

2017 6th International Conference on Clean Electrical Power (ICCEP)

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Frequency regulation method with congestion management using renewable energy curtailment

Cited by 4 publications

References 4 publications

Emissions Effects of Energy Storage for Frequency Regulation: Comparing Battery and Flywheel Storage to Natural Gas

Emissions Effects of Energy Storage for Frequency Regulation: Comparing Battery and Flywheel Storage to Natural Gas

Game-Theory Based V2G Coordination Strategy for Providing Ramping Flexibility in Power Systems

Frequency control in power system based on balancing market considering wind power forecasting error

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