Technical Investigation for Power System Flexibility

Eltohamy, Mohammed Saber; Moteleb, Mohammed Said Abdel; Talaat, H.; Mekhemer, S.Fouad; Omran, Walid A.

doi:10.1109/accs-peit48329.2019.9062862

Cited by 8 publications

(4 citation statements)

References 22 publications

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“…The time interval (Δt) used to identify the ramp in minutes/hours is determined by the user. Given the differences in capacity and available flexibility with which these events are handled across various power systems, no standard definition for the ramp event has been agreed upon to date [65] [66]. Because the power signals for load/net-load are more stable than those for wind/PV, lower threshold values are given to load/net-load ramp events than to wind/PV ramp events.…”

Section: Characteristics Of Power Rampsmentioning

confidence: 99%

Characterization of Short-Term Wind Power Variations and Estimation of Reserve Requirements for High Wind Generation Shares

Eltohamy,

Abdel Moteleb,

Talaat

et al. 2023

IJEEI

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The need to deal with variability in wind power output is one of the greatest challenges connected with adopting a considerable amount of wind power into power grids. Power system operators need to acquire more information on this variability, which can be utilized in the mitigation of high ramping events, especially when these events synchronize with a large error in the prediction, ensuring flexibility and reliability in the power system besides the economic considerations. The paper analyses short-term variability in output power using actual data obtained from aggregated wind farms from 2015 to 2020, where power ramping characteristics are described using a variety of measurements. The use of the standard deviation of short-term wind power variation as a reserve measure will be investigated in detail since there is no consensus about the ideal confidence level value as a multiplier of σ, which ranges from 3 to 6 times σ. The paper addresses how large this confidence level should be, as well as developing a data-driven approach for estimating this reserve with increasing wind shares and evaluating the proper distribution of short-term wind variation. The results illustrate that the stochastic variations in wind power can retain many of their characteristics from year to year, even when the share of wind capacity is raised.

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Section: Characteristics Of Power Rampsmentioning

confidence: 99%

Characterization of Short-Term Wind Power Variations and Estimation of Reserve Requirements for High Wind Generation Shares

Eltohamy,

Abdel Moteleb,

Talaat

et al. 2023

IJEEI

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“…The landscape of global power systems is undergoing a transformative shift from traditional, centralized electricity generation to a far more complex, distributed, and diverse arrangement. The transition is powered by the integration of renewable energy sources, the advancement of energy storage technology, and the digitalization prevalence of the power grid [1]. The transition has also created a new set of challenges in terms of grid stability, among other concerns.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Quantitative Assessment Techniques for Supply-Regulation Capability in Multi-Scenario New-Type Power Systems

Liu,

Wang,

Xin

et al. 2024

EAI Endorsed Trans Energy Web

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This paper offers an in-depth investigation into various quantitative assessment methods used to quantify the supply regulation capacity in new types of power systems under different conditions. As new forms of energy, including renewables, are increasingly becoming the predominant sources of power systems, the traditional systems are undergoing transformative modifications to efficiently address the issue of power generation and consumption fluctuations. In this regard, this paper proposes an original framework that combines advanced statistical methods and machine learning. The primary purpose of the framework is to identify the level of resilience and flexible adaptability of new power systems. The paper presents the results of the simulations and real-world applications of the proposed measurement methods in enhancing power supply reliability and efficiency in all conditions. The implications based on the results will be beneficial to policymakers and other specialists who are making decisions involving designing and optimizing modern power systems. Furthermore, the paper aims to contribute to the existing discussion by providing further insights into the effectiveness of the proposed methods of measurement.

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“…It is possible to increase the utilization rate of renewable energy if uncertainties associated with the generation of renewable energy can be properly incorporated into day-ahead scheduling. To address uncertainties in power systems [17][18][19], flexibility has been proposed. In [20], an optimal scheduling model for flexible resources was presented from both the generation and load sides.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimal Scheduling for Multi-Renewable Energy Power System Considering Flexibility Constraints

Yang

Huang

Guo³

et al. 2022

Processes

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As renewable energy penetration increases, the lack of flexibility in a multi-renewable power system can seriously affect its own economics and reliability. To address this issue, three objectives are considered in this study: power fluctuations on tie-line, operating cost, and curtailment rate of renewable energy. Presented also is an optimal day-ahead scheduling model based on the MREPS for distributed generations with flexibility constraints. The multi-objective particle swarm optimization (MOPSO) algorithm can be applied to obtain a set of Pareto non-dominated solutions for the day-ahead scheduling strategy with the proposed model. By using fuzzy comprehensive evaluation, the optimal compromise solution is determined in the set. The presented method sacrifices a small amount of economy and power fluctuation, but it can reduce the deviation between forecast and realized power fluctuations on the tie-line, while improving the utilization of renewable energy.

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Technical Investigation for Power System Flexibility

Cited by 8 publications

References 22 publications

Characterization of Short-Term Wind Power Variations and Estimation of Reserve Requirements for High Wind Generation Shares

Characterization of Short-Term Wind Power Variations and Estimation of Reserve Requirements for High Wind Generation Shares

Investigation of Quantitative Assessment Techniques for Supply-Regulation Capability in Multi-Scenario New-Type Power Systems

Multi-Objective Optimal Scheduling for Multi-Renewable Energy Power System Considering Flexibility Constraints

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