Challenges of planning for high renewable futures: Experience in the U.S. midcontinent electricity market

Tsai, Chen-Hao; Figueroa-Acevedo, Armando L.; Boese, Maire; Li, Yifan; Mohan, Nihal; Okullo, James; Heath, Brandon; Bakke, Jordan

doi:10.1016/j.rser.2020.109992

Cited by 22 publications

(10 citation statements)

References 37 publications

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“…The targets contain the improvement of power safety guarantee capability, promotion of structural reform on power supply side, development of the traditional power generators, and the improvement of overall power system efficiency [1]. In the areas with poor water resources, the high penetration of wind power access to the power grid will cause difficulty in the power balance control, owing to the difficulty in wind power consumption during peak hours [2].…”

Section: Inductionmentioning

confidence: 99%

Time-Interval-Varying Optimal Power Dispatch Strategy Based on Net Load Time-Series Characteristics

Gao

et al. 2022

Energies

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In China, with the increasing permeability of wind power, the power supply capacity is enough overall, but has shortage in partial-time. During peak hours, the capability of wind power consumption is poor and the power balance becomes more difficult. In order to maximize the utilization of wind power, the net loads are chosen as the response objectives, which contain significant uncertainties and have no probabilistic distribution characteristics. Under the traditional day-ahead power dispatch mode with fixed length time intervals and in the regions with insufficient hydroelectricity, the thermal generators take charge of the peak-load shaving. The frequent adjustments of thermal power output affect the system operation safety, economic benefits, and environmental benefits. Thus, a time-interval-varying optimal power dispatch strategy based on net load time-series characteristics is proposed in this paper. The net loads respond differently to intervals. The length of each time interval is determined based on the net load time-series characteristics analyzed by random matrix theory. The dispatch mode in each time interval is determined according to the characteristic quantification index calculated by the empirical modal decomposition and sample entropy. The proposed strategy and method can extend the continuous and stable operation time of the thermal generators, reduce the coal consumption caused by the ramping operation, and improve the safety, stability, and economy of the system. Furthermore, the proposed dispatch mode is environmentally friendly with reduced environmental cost and increased carbon credits. An actual provincial power grid in northeast China is taken as the example to verify the rationality and effectiveness of the proposed method and strategy.

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Section: Inductionmentioning

confidence: 99%

Time-Interval-Varying Optimal Power Dispatch Strategy Based on Net Load Time-Series Characteristics

Gao

et al. 2022

Energies

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“…This is more of an economic problem than a reliability concern, as curtailment, demand response, and storage (among other flexibility options) solves the issue. These periods also lead to lower levels of system inertia (Tsai et al 2020) which could cause frequency stability problems, leading to reliability concerns. However, this may not be particularly concerning for large integrated interconnections such as the EI and WI, while smaller systems, such as the TI, may be able to rely on inverter technology to provide fast frequency response, replacing the need for inertia (Denholm et al 2020).…”

Section: High Variable Renewable Energy Resource With Low Demandmentioning

confidence: 99%

The Evolving Role of Extreme Weather Events in the U.S. Power System with High Levels of Variable Renewable Energy

Novacheck¹,

Sharp²,

Schwarz³

et al. 2021

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“…With distributed energy developing rapidly, the higher penetration of renewable energy is a double-edged sword for energy system reliability [1] and energy supply flexibility [2], and in this context, with the Integrated Energy Microgrid (IEM) flourishing, the traditional units [3] and the auxiliary service energy market is experienced a great change within their footprint [4]. Therefore, in this context, the energy dispatching optimization in IEM considering the market mechanism of customer reliability auxiliary services can not only effectively explore the potential benefits of reliability in energy dispatching, but also allocate the reliability resources fairly and reasonably according to the differentiated market demand; thus, it can further improve the economic benefits of energy use for the whole of society, and promote energy structure transformation.…”

Section: Introductionmentioning

confidence: 99%

An Optimal Dispatching Model for Integrated Energy Microgrid Considering the Reliability Principal–Agent Contract

Chen

Zhu

et al. 2022

Sustainability

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As the increasing penetration of sustainable energy brings risks and opportunities for energy system reliability, at the same time, considering the multi-dimensional differentiation of users’ reliability demands can further explore the potential value of reliability resources in Integrated Energy Microgrid (IEM). To activate the reliability resources in a market-oriented perspective and flexibly optimize the operational reservation in dispatch, an optimal dispatching model in IEM considering reliability principal–agent contracts is proposed. We establish the reliability principal–agent mechanism and propose a cooperative gaming model of Integrated Energy Operator (IEO) and Integrated Energy User (IEU) based on the optimal dispatching model. At the upper level, the economic dispatching model of IEO is established to optimize the operation reservation, and the reliability principal–agent contract from users in the lower level would influence reliability improvement. Each IEU in the lower level maximizes its energy utilization and gives the corresponding reliability principal–agent incentives according to the reliability improvement degree and its actual demand. The bi-level model is solved by the KKT condition and strong duality theorem. A case study verifies the effectiveness of the proposed model in reducing the energy dispatch cost, improving the economic benefits of each participant, realizing the optimal allocation of reliability resources and optimizing the IEM energy structure, and the sensitivity analysis of dispatch cost with the user’s energy-using benefits is discussed.

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Challenges of planning for high renewable futures: Experience in the U.S. midcontinent electricity market

Cited by 22 publications

References 37 publications

Time-Interval-Varying Optimal Power Dispatch Strategy Based on Net Load Time-Series Characteristics

Time-Interval-Varying Optimal Power Dispatch Strategy Based on Net Load Time-Series Characteristics

The Evolving Role of Extreme Weather Events in the U.S. Power System with High Levels of Variable Renewable Energy

An Optimal Dispatching Model for Integrated Energy Microgrid Considering the Reliability Principal–Agent Contract

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