Evaluation of Different Francis Turbine Modelling Techniques for Real Time Digital Simulator Applications

Akbari, Hasan; Schürhuber, Robert; Pérez‐Díaz, Juan I.; Sarasúa, José-Ignacio

doi:10.1109/smart55236.2022.9990493

Cited by 1 publication

(8 citation statements)

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“…The authors in [20] evaluated three different methodologies for modelling Francis a pump-turbine for RTDS applications. In this paper, the three main methods for modelling a Francis pump-turbine, including the proposed IEEE model [21], the linearized model around the operating point [22], and the hill chart-based interpolation model [23] were modeled, simulated, tested, and discussed.…”

Section: Introductionmentioning

confidence: 99%

“…where θ is the polar angle of the operation point with the unit flow of q11 and unit speed of n11, Wh(θ) is the parameter for the dynamic pressure head of the turbine, and Wt(θ) is the parameter used to calculate the output torque of the turbine in the operation point. The authors in [20] studied the RTDS results for different turbine modeling techniques. The sample power system for this study is depicted in Figure 4 and the details of the system are presented in [20].…”

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confidence: 99%

“…The authors in [20] studied the RTDS results for different turbine modeling techniques. The sample power system for this study is depicted in Figure 4 and the details of the system are presented in [20]. Here, some of the results are reproduced in Figures 5-7.…”

mentioning

confidence: 99%

“…Here, some of the results are reproduced in Figures 5-7. The authors in [20] studied the RTDS results for different turbine modeling techniques. The sample power system for this study is depicted in Figure 4 and the details of the system are presented in [20].…”

mentioning

confidence: 99%

“…Here, some of the results are reproduced in Figures 5-7. According to the results of [20], the most accurate model to represent the transient and steady state behaviors of the Francis pump-turbine is the hill chart-based model; however, it has the highest calculation burden in the RTDS and the experimental hill chart data for the turbine are not always available. The IEEE model is able to show the steady state behavior if the efficiency factor is updated for every new operation point; however, the IEEE and linearized models are not suitable for presenting the transient behavior of a turbine.…”

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confidence: 99%

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Implementation and Evaluation of a Complex Pumped-Storage Hydropower Plant with Four Units, Common Penstock, and Surge Tank in a Real-Time Digital Simulator

et al. 2023

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The demand for energy storage systems is rising together with the proportion of renewable energy sources (RES) in power systems. The highest capacity among the various energy storage systems in power systems is provided by pumped-storage hydropower (PSH). In this paper, the ability of the real-time digital simulator (RTDS), e.g., dSpace–SCALEXIO, to emulate a complex pumped-storage hydropower plant with four units, two common penstocks, a surge tank, and a long headrace tunnel is investigated. The RTDS is the smart brain of an advanced lab setup called power hardware in the loop (PHIL), which is an extremely safe and useful lab system for electrical power system research and testing hardware and methods under various conditions. In this research, the capability of an RTDS to emulate the behavior of a pumped-storage hydropower plant including four Francis pump-turbines, four short penstocks, two common penstocks, a surge tank, and a long headrace tunnel is evaluated. Francis pump-turbines are modelled based on the hill chart-based interpolation and waterways including penstocks and headrace tunnel are modelled based on the polynomial approximation of a hyperbolic function. Finally, the results from the RTDS are presented and discussed. According to the results of the paper, we confirm that the RTDS can accurately emulate the hydraulic, mechanical, and electrical transients of a pumped-storage hydropower plant with a complex configuration.

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