Hydropower Plants Frequency Regulation Depending on Upper Reservoir Water Level

Platero, Carlos A.; Sánchez, Javier Solana; Nicolet, Christophe; Allenbach, P.

doi:10.3390/en12091637

Cited by 9 publications

(8 citation statements)

References 26 publications

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“…Therefore, there are two different problems in this strategy. The first one is increasing or decreasing, in a fast way, the non-wind generated power in cases of wind generation decreasing below the load [22,23]. The second is increasing or decreasing, also in a fast way, the pumping power demanded [24].…”

Section: Non-restricted Windmentioning

confidence: 99%

Evaluation of the Operating Efficiency of a Hybrid Wind–Hydro Powerplant

et al. 2020

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This paper analyzes the operating efficiency of a hybrid wind–hydro power plant located in El Hierro Island. This plant combines a wind farm (11.48 MW) and a pumped storage power plant (11.32 MW). It was built with the aim of supplying the island demand from renewable energy instead of using existing diesel units. The paper discusses several operational strategies and proposes an efficiency metric. Using 10 min data, the operation of this power plant has been simulated. From these simulations (more than 50,000 for a year), the operating efficiency and the percentage of demand covered from renewable energy is obtained. The difference between the worst and the best strategy is a twofold increase in efficiency. Moreover, the results of the simulations are compared with the system operational history since June 2015 (when the wind–hydro power plant started operation) until 2018. These comparisons show a reasonable agreement between simulations and operational history.

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Section: Non-restricted Windmentioning

confidence: 99%

Evaluation of the Operating Efficiency of a Hybrid Wind–Hydro Powerplant

et al. 2020

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“…Firstly, calculate the total energy storage ES t of the cascade system by Formula (2). Secondly, get an output from ESOC by ES t , suppose its TL t,chart , and calculate the total output of cascade system by natural inflow, suppose its TL t,inflow .…”

Section: Drawing and Simulation Of Esocmentioning

confidence: 99%

“…As a renewable and clean energy [1,2], hydropower energy is a kind of high quality and efficient energy which is being vigorously developed all over the world [3]. Its development and utilization is mainly through the construction of reservoirs to concentrate and raise water head, so that the water energy can be efficiently converted into electricity.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Energy Storage Operation Chart of Cascade Reservoirs with Multi-Year Regulating Reservoir

et al. 2019

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In view of the problems that have not been solved or studied in the previous studies of cascade Energy Storage Operation Chart (ESOC), based on a brief description of the composition, principle, drawing methods, and simulation methods of ESOC, the following innovative work has been done in this paper. Firstly, considering the inconsistency of inflow frequency of upstream and downstream watershed in selecting the typical dry years, a novel optimization model for selecting the overall inflow process considering the integrity of watershed was proposed, which aimed at minimizing the sum of squares of inflow frequency differences. Secondly, aiming at the influence of output coefficients (including number and values) on the results of ESOC, this paper proposed a new method to construct the initial solution of output coefficients and established an optimization model of output coefficients based on progressive optimality algorithms. Thirdly, to the optimization of ESOC with multi-year regulating reservoir, a discrete optimization model of drawdown level was constructed based on the idea of ergodic optimization. On these bases, taking the seven reservoirs in the Yalong River basin of China as an example, the typical dry years considering the inflow frequency inconsistency, the optimal output coefficients of ESOC and the optimal end-of-year drawdown level of a multi-year regulating reservoir (Lianghekou) were obtained, and compared with the previous research results, the ESOC optimized in this paper can increase the total power generation of the cascade system by 9% under the condition that the guaranteed rate did not change much. Furthermore, the difference of the optimal end-of-year drawdown levels between the cascade joint operation and single reservoir operation was discussed for the Lianghekou reservoir at the end of the case study. The obtained results were of great significance for guiding the actual operation of cascade reservoirs.

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“…Large hydro turbine generator sets can balance power instantaneously at peak hours and off-hours, thus having the ability to stabilize network frequency and perform phase angle compensation [1]. This stabilization and compensation ability renders them crucial in power networks [2,3]. With increasing power demands, the replacement of these generator sets poses a unique design challenge with limitations imposed by prior installations [4].…”

Section: Introductionmentioning

confidence: 99%

Robust and eﬀicient EBG-backed wearable antenna for ISM applications

Saeed¹,

Ejaz²,

Shahid³

et al. 2021

Turk J Elec Eng & Comp Sci

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Hydro generator design is a significant issue in terms of safety, efficiency, and energy production sustainability.One of the most crucial issues about design criteria is to satisfy the needs of the project's critical speed. In this work, the critical speed calculation of an 11 MW Hydro Power Plant was investigated with several design steps. Numerical solution methodologies were implemented using ARMD™. A generator design was developed, and the implementation of the rotor was carried out in Antalya, Turkey. Vibration and displacements of the hydro generator are adequate. The generator unit is active for 3 years and had never encountered runaway speeds. No critical speed or resonance speed is anticipated for the designed hydro generator unit.

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Hydropower Plants Frequency Regulation Depending on Upper Reservoir Water Level

Cited by 9 publications

References 26 publications

Evaluation of the Operating Efficiency of a Hybrid Wind–Hydro Powerplant

Evaluation of the Operating Efficiency of a Hybrid Wind–Hydro Powerplant

Optimization of Energy Storage Operation Chart of Cascade Reservoirs with Multi-Year Regulating Reservoir

Robust and eﬀicient EBG-backed wearable antenna for ISM applications

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