Mathematical modelling of a tidal power station with diesel and wind units

Baykov, A. V.; Dar’enkov, Andrey; Kurkin, A. A.; Sosnina, Elena

doi:10.1016/j.jksus.2019.01.009

Cited by 6 publications

(5 citation statements)

References 21 publications

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“…The reactive power fluctuated to about zero (1.865 × 10 −7 VAR), whereas the active power was 2.5 MW. Between t = 0 and t = 0.3 s, the active power signal overshoots were 14.557%, while between t = 0.3 and t = 0.4 s, the value fell short by approximately 1.998% at time t = 0.6 s according to Equation (18) presented in Energies Standard 2021, volume 14 (page 688). Figure 15 shows the phase-to-ground voltage wave, which had a total harmonic tortion of 141.38%, and the phase current signal had a total harmonic distortion of 13.5 The total harmonic distortions for current and voltage illustrated in Figure 15a,b creased by 0.07% and 0.12%, respectively.…”

Section: Case Studiesmentioning

confidence: 99%

“…The modelling of tidal power plant components is the subject of numerous scholarly articles. However, extensive research has not been conducted on the use of filters in tidal generation systems [18]. Several filter design methodologies and applications have also been described in the literature, although only for grid-connected inverters for wind and solar systems [19].…”

Section: Introductionmentioning

confidence: 99%

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Modelling and Performance Analysis of a Tidal Current Turbine Connected to the Grid Using an Inductance (LCL) Filter

Kangaji,

Tartibu,

Bokoro

2023

Energies

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Nowadays, integrating renewable energy sources, such as tidal power, into the existing power grids of turbines is crucial for sustainable energy generation. However, tidal turbine energy transforms the potential energy of moving water into electrical energy. When both nonlinear load and dynamic load harmonics are present, the tide speed variance causes serious power quality issues such as low power factor, unstable voltage, harmonic distortions, frequency fluctuations, and voltage sags. The integration of an LCL-filter-based connection scheme can address these challenges by improving power quality and the overall performance of the tidal current turbine grid system. This study shifts LCL filter research from its conventional wind energy emphasis to the emerging field of tidal stream generation systems. The LCL filter analysed in this paper is modelled to exhibit adequate mechanical, electrical, and hydrodynamic characteristics. This model accounts for tidal current variations, turbine speed control, and power extraction dynamics. The LCL filter is evaluated for its effectiveness in reducing harmonic distortions, voltage fluctuations, and reactive power fluctuations. This system is composed of a 1.5 MW/C, a 1.2 MW three-level inverter with a nominal voltage of 600 V, and an inductance (LCL) filter. The results show that the inverter produces a harmonic distortion of less than 0.5%, which demonstrates the effectiveness of the filter in improving total harmonic distortion, reactive power consumption, and voltage control.

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Section: Case Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling and Performance Analysis of a Tidal Current Turbine Connected to the Grid Using an Inductance (LCL) Filter

Kangaji,

Tartibu,

Bokoro

2023

Energies

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“…Studies [15,16] suggest a method of forecasting and managing a ship's power plant using a model of this plant with a permanent model structure. However, when the power plant's operational mode changes, the structure of the system changes as well, which affects the system model and modeling results.…”

Section: An Improvement Of the Control System Implied The Integration Of A Modeling Unit And A Decision Support Unit Into Its Structure Tmentioning

confidence: 99%

Improving the ship's power plant automatic control system by using a model-oriented decision support system in order to reduce accident rate under the transitional and dynamic modes of operation

Voytetsky

Voytetskaya

Vyshnevskyi

et al. 2021

EEJET

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This paper proposes a method to improve the performance of a ship's power plant by reducing accidents within it under transitional operating modes. The method is based on decreasing the number of service personnel errors by using a model-oriented decision support system. In order to implement the proposed method, the structure of the system of automatic control of the ship's power plant has been improved. Such an improvement of the control system implied the integration of a modeling unit and a decision support unit into its structure. The modeling unit makes it possible to predict values of the controlled parameters under a transition mode of operation before they actually appear in the system as a result of the operator's actions. A mathematical model of the automatic control system under transitional operating modes has been built for this unit. In order to implement the decision support unit, a method has been devised to formalize the task of managing the power plant under transitional operating modes. The method essentially involves modeling a transitional operating regime, followed by an evaluation of the results based on regulatory requirements and an empirical criterion for assessing the quality of enabling the diesel generators to work in parallel. In addition, a method has been developed for the decision support unit to reduce the accident rate and improve performance with the help of a mathematical apparatus of fuzzy inference, fuzzy logic, and fuzzy sets. Transitional operating regimes resulting from actual erroneous operator actions during ship flights were investigated. As a result of using the proposed system, the power plant performance increases

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“…However, the inherent randomness and intermittence of offshore wind energy inevitably lead to large power fluctuations in the terminal power system, resulting in increased maintenance and balance costs [11][12][13]. To address this challenge, various multi-energy complementary power generation schemes have been proposed that integrate offshore wind energy with other ocean energy sources [14][15][16][17][18][19]. Among these, the combined wave-wind power generation system is considered to be the best option due to its economic efficiency and technical feasibility [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

The Energy Conversion and Coupling Technologies of Hybrid Wind–Wave Power Generation Systems: A Technological Review

Wang,

Sun,

Zhao

et al. 2024

Energies

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Based on the mutual compensation of offshore wind energy and wave energy, a hybrid wind–wave power generation system can provide a highly cost-effective solution to the increasing demands for offshore power. To provide comprehensive guidance for future research, this study reviews the energy conversion and coupling technologies of existing hybrid Wind–wave power generation systems which have not been reported in previous publications. The working principles of various wind and wave energy conversion technologies are summarised in detail. In addition, existing energy coupling technologies are specifically classified and described. All aforementioned technologies are comprehensively compared and discussed. Technological gaps are highlighted, and future development forecasts are proposed. It is found that the integration of hydraulic wind turbines and oscillating wave energy converters is the most promising choice for hybrid wind–wave power extraction. DC and hydraulic coupling are expected to become mainstream energy coupling schemes in the future. Currently, the main technological gaps include short their operating life, low energy production, limited economic viability, and the scarcity of theoretical research and experimental tests. The field offers significant opportunities for expansion and innovation.

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Mathematical modelling of a tidal power station with diesel and wind units

Cited by 6 publications

References 21 publications

Modelling and Performance Analysis of a Tidal Current Turbine Connected to the Grid Using an Inductance (LCL) Filter

Modelling and Performance Analysis of a Tidal Current Turbine Connected to the Grid Using an Inductance (LCL) Filter

Improving the ship's power plant automatic control system by using a model-oriented decision support system in order to reduce accident rate under the transitional and dynamic modes of operation

The Energy Conversion and Coupling Technologies of Hybrid Wind–Wave Power Generation Systems: A Technological Review

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