Impact of continuous stochastic and spatially distributed perturbations on power system frequency stability

Farmer, Warren J.; Rix, Arnold J.

doi:10.1016/j.epsr.2021.107536

Cited by 9 publications

(4 citation statements)

References 20 publications

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“…Notably, the parameter matrices A f , B f , C f , and G f in Equation ( 1) are fixed constants that cannot be changed once the state space model is determined. Therefore, the control delay τ is decomposed or reconstructed to optimize the output feedback controller (8).…”

Section: Controller Optimization Based On the Padé Approximationmentioning

confidence: 99%

“…Therefore, the frequency dynamics in cases with uncertain fluctuations should be considered. The stochastic dynamics of system frequency in situations with spatially distributed disturbances were investigated in [8] using stochastic differential equations and the Fokker–Planck equations. The study showed that with increasing reactance distance, the probability of significant frequency dynamics occurring in modern power systems decreases.…”

Section: Introductionmentioning

confidence: 99%

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Frequency control of power systems under uncertain disturbances based on input‐output finite‐time stability

Zhu,

Yu,

2024

IET Generation Trans & Dist

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In modern power systems, the uncertainty and volatility of generation and loads greatly increase the balance discrepancy between the power supply and demand, creating major potential security hazards. To limit out‐of‐bound frequencies, an effective frequency control method for power systems with interval uncertain disturbances is proposed. Based on the state space model of the system frequency response with delays, linear matrix inequalities are constructed based on the input‒output finite‐time stability of the system frequency. By searching for the output feedback gain and altering the time delay with the Padé approximation, the feasibility of the linear matrix inequalities is improved, and a frequency controller is designed. The simulation results show that the proposed method can effectively control frequency deviations. When the closed‐loop system is disturbed by uncertain power fluctuations, its frequency will always remain within the allowable range to ensure the secure operation of the power system.

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Section: Controller Optimization Based On the Padé Approximationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Frequency control of power systems under uncertain disturbances based on input‐output finite‐time stability

Zhu,

Yu,

2024

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

“…Finally, the authors propose two optimization frameworks: optimize parameters for the piecewise function (find optimal values for threshold, load conditions and dead band values) and optimize parameters for SOC alpha values. For those optimization problems, two objective functions were defined: the root mean squared (rms) values for SOC in (15) and frequency deviation in (16).…”

Section: Frequency Controlmentioning

confidence: 99%

“…During the last decade, these challenges have been faced and extensive research has been published, allowing to find new operational structures, technical advantages, and also new questions to be answered. For example, multiple studies have shown how technically advantageous can be the implementation of DER in distribution networks in terms of power loss reduction, voltage regulation, network loadability, network capacity, system flexibility, frequency regulation, Demand Response, Curtailment, maximization of profit, or minimization of costs [10], [15] - [23]. However, analysis of DER in power systems is usually performed assuming certainty conditions (by means forecasts, study-cases, static behavior, or linearization), thus limiting the scope of obtained results, or by implementing variability compensation systems in the effort to increase the inertial response during electricity supply [24] or the stability [25], [26], for instance, using Battery Energy Storage Systems (BESS), flywheels or hydro-pumped storage [13].…”

Section: Introductionmentioning

confidence: 99%

Revisión de la optimización de Bess en sistemas de potencia

Osorio

2022

TecnoL.

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La creciente penetración de recursos distribuidos ha impuesto desafíos en el análisis y operación de sistemas de potencia, principalmente debido a incertidumbres en los recursos primarios. En la última década, la implementación de sistemas de almacenamiento por baterías en redes eléctricas ha captado el interés en la investigación, ya que los resultados han demostrado efectos positivos cuando se despliegan óptimamente. En este trabajo se presenta una revisión de la optimización de sistemas de almacenamiento por baterías en sistemas de potencia. Pare ello se procedió, primero, a mostrar el contexto en el cual se implementan los sistemas de baterías, su marco de operación, las tecnologías y las bases de optimización. Luego, fueron detallados la formulación y el marco de optimización de algunos de los problemas de optimización encontrados en literatura reciente. Posteriormente se presentó una revisión de las técnicas de optimización implementadas o propuestas recientemente y una explicación básica de las técnicas más recurrentes. Finalmente, se discutieron los resultados de la revisión. Se obtuvo como resultados que los problemas de optimización con sistemas de almacenamiento por baterías son un tema de tendencia para la investigación, en el que se han propuesto diversas formulaciones para el análisis en estado estacionario y transitorio, en problemas multiperiodo que incluyen la estocasticidad y formulaciones multiobjetivo. Adicionalmente, se encontró que el uso de técnicas metaheurísticas es dominante en el análisis de problemas complejos, multivariados y multiobjetivo, mientras que la implementación de relajaciones, simplificaciones, linealizaciones y la adaptación mono-objetivo ha permitido el uso de técnicas más eficientes y exactas. La hibridación de técnicas metaheurísticas ha sido un tema relevante para la investigación que ha mostrado mejorías en los resultados en términos de eficiencia y calidad de las soluciones.

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Resilience of the microgrid with a core substation with 100% hydrogen fuel cell combined cycle and a general substation with variable renewable energy

Obara

2022

Applied Energy

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Impact of continuous stochastic and spatially distributed perturbations on power system frequency stability

Cited by 9 publications

References 20 publications

Frequency control of power systems under uncertain disturbances based on input‐output finite‐time stability

Frequency control of power systems under uncertain disturbances based on input‐output finite‐time stability

Revisión de la optimización de Bess en sistemas de potencia

Resilience of the microgrid with a core substation with 100% hydrogen fuel cell combined cycle and a general substation with variable renewable energy

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