A Data-Driven Under Frequency Load Shedding Scheme in Power Systems

Golpîra, Hêmin; Bevrani, Hassan; Messina, A.R.; Bertucci, François

doi:10.1109/tpwrs.2022.3172279

Cited by 20 publications

(3 citation statements)

References 71 publications

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“…However, adopting PMUs improves the estimate and monitoring rate accuracy, offering a more effective solution for UFLS in MPN. In addition, in [48], a method is suggested to address measurement errors, communication failure, and time delays. The above factors are incorporated into the problem formulation to make the results more accurate and reflective of real-world scenarios.…”

Section: Synchro-phasor-based Load Sheddingmentioning

confidence: 99%

Real-Time Grid Monitoring and Protection: A Comprehensive Survey on the Advantages of Phasor Measurement Units

et al. 2023

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The emerging smart-grid and microgrid concept implementation into the conventional power system brings complexity due to the incorporation of various renewable energy sources and non-linear inverter-based devices. The occurrence of frequent power outages may have a significant negative impact on a nation’s economic, societal, and fiscal standing. As a result, it is essential to employ sophisticated monitoring and measuring technology. Implementing phasor measurement units (PMUs) in modern power systems brings about substantial improvement and beneficial solutions, mainly to protection issues and challenges. PMU-assisted state estimation, phase angle monitoring, power oscillation monitoring, voltage stability monitoring, fault detection, and cyberattack identification are a few prominent applications. Although substantial research has been carried out on the aspects of PMU applications to power system protection, it can be evolved from its current infancy stage and become an open domain of research to achieve further improvements and novel approaches. The three principal objectives are emphasized in this review. The first objective is to present all the methods on the synchro-phasor-based PMU application to estimate the power system states and dynamic phenomena in frequent time intervals to observe centrally, which helps to make appropriate decisions for better protection. The second is to discuss and analyze the post-disturbance scenarios adopted through better protection schemes based on accurate and synchronized measurements through GPS synchronization. Thirdly, this review summarizes current research on PMU applications for power system protection, showcasing innovative breakthroughs, addressing existing challenges, and highlighting areas for future research to enhance system resilience against catastrophic events.

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Section: Synchro-phasor-based Load Sheddingmentioning

confidence: 99%

Real-Time Grid Monitoring and Protection: A Comprehensive Survey on the Advantages of Phasor Measurement Units

et al. 2023

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“…Finally, the amount of load shedding is distributed depending on the voltage dips at the load buses. In [87] they propose a new data-driven approach to estimate the nadir frequency from a rolling first-degree polynomial function, considering time delays and measurements uncertainty. For the estimation of the imbalance they use an approach associated with the swing equation; however, within the formulation they perform a comparison between a system database and the current conditions of the system under study and, in addition, they introduce the frequency estimation stage in this calculation.…”

Section: ) Adaptive Uflsmentioning

confidence: 99%

Toward Adaptive Load Shedding Remedial Action Schemes in Modern Electrical Power Systems

Toro-Mendoza,

Segundo-Ramírez,

Esparza-Gurrola

et al. 2023

IEEE Access

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Modern power grids are becoming more stressed, more complex, and beginning to have a significant integration of energy sources based on power electronics devices, which significantly changes the dynamics of power grids affecting the design and operation of Remedial Action Schemes such as UVLS and UFLS, where the conventional operation philosophy of these schemes is based in operating parameters such as thresholds, amount, and location of the load shedding fixed regardless of the event. Therefore, they are not adaptable to the various conditions of the modern power grids, causing their misoperation. In recent years, a wide variety of adaptive schemes around the world have been proposed as a solid solution with good performance, since its main characteristic is its ability to consider the magnitude of the event in its load shedding, turning them into more selective and with flexibility in their operating parameters. The aim of this article is to review the development of adaptive schemes in UVLS and UFLS over the years, identifying how to approach the design of such adaptable schemes, which operating parameters tend to give them greater flexibility and which have been less explored. Then broken down the methods used to give flexibility to the operating parameters of UVLS and UFLS, and also that other devices such as FACTS and ESS can enhance its operation, with the aim of provide a broad vision of how to give them flexibility to these parameters and which of them are identified as an opportunity to improve the performance of the adaptive schemes. Finally, the review includes some RAS with adaptive approach implemented in real systems which some of them includes load shedding, to show how these schemes have reconfigured their design and operation by giving flexibility to some operating parameters, it is possible to show the need of modern power grids to have adaptive RAS.

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“…Ref. [17] presents a measurement‐based under frequency load shedding scheme that considers time delays, measurement uncertainties, and communication network faults. The frequency nadir is estimated by a moving first‐degree polynomial function, and the systematic approach for load selection is developed.…”

Section: Introductionmentioning

confidence: 99%

Analytical prediction method of power system frequency deviation under uncertain power fluctuations

Zhu

2023

IET Generation Trans & Dist

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In modern power systems, the impact of random power sources and loads on power systems is increasing, resulting in threatened system frequency security. However, traditional methods are often not comprehensive in modelling randomness, and there is no analytical method to assess the frequency response of power systems under uncertain power fluctuations. Here, the power fluctuation in a power system is regarded as an interval random quantity. An analytical prediction method of the power system frequency deviation under uncertain power fluctuation is proposed. Through further deduction, the allowable range of power fluctuation under the premise of secure frequency deviation can also be defined, which provides a reference for frequency security and accident prevention in power systems. Numerical simulations with the model of the East China Power Grid demonstrate that the proposed analytical method can delimit the response interval of system frequency deviation well, and the backstepping calculation can also delimit the allowable range of power fluctuation to ensure the secure operation of the system.

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A Data-Driven Under Frequency Load Shedding Scheme in Power Systems

Cited by 20 publications

References 71 publications

Real-Time Grid Monitoring and Protection: A Comprehensive Survey on the Advantages of Phasor Measurement Units

Real-Time Grid Monitoring and Protection: A Comprehensive Survey on the Advantages of Phasor Measurement Units

Toward Adaptive Load Shedding Remedial Action Schemes in Modern Electrical Power Systems

Analytical prediction method of power system frequency deviation under uncertain power fluctuations

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