Reliability evaluation of power grid including Aqua Buoy
Subject Areas :
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Keywords: Reliability, wave power plant, Aqua Buoy, analytical approach,
Abstract :
In recent years, ocean energy has been used as a renewable energy source that has various types such as wave energy, tidal energy and ocean thermal energy to produce electrical energy in many countries. Among the reasons for this are the sudden increase in oil prices at the end of the 1970s, environmental problems caused by fossil fuels such as climate change and global warming, and efforts to achieve sustainable and inexhaustible energy sources. Due to the high density of wave energy, various technologies have been developed in the world to convert this energy into electrical energy. Unfortunately, the growth of wave energy converters has been less compared to other renewable energy sources such as wind turbines and photovoltaic systems, and this is due to the high cost of generating electricity by these converters. Studies that have been conducted so far in the field of wave energy have focused more on the principles of operation of these technologies and their cost, and other aspects of these converters have not been considered. On the other hand, reliability in today's power grids has become one of the most important factors, and one of the demands of consumers of electrical energy from electricity producers and distributors is that the electricity provided to them should have the least uncertainty while meeting the necessary standards in the field of power quality. Accordingly, this paper has been defined in order to fill the gap created in the field of studying the reliability of wave energy converter based on Buoy technology. In the first stage, it is necessary to develop a reliability model for these converters by understanding the principles of operation, components and their power generation relationships in terms of important wave parameters, including wave height and wave period, which are effective in determining the amount of wave energy. In developing this model, both the failure of the constituent elements and the changes in the output power of these power plants, which are caused by large changes in wave height and wave period, must be taken into account. In the following, the technique for studying the reliability of the power system with the presence of these power plants is introduced and the important reliability indices of the power system with the presence of these power plants are calculated. In order to examine the proposed method, the reliability models obtained for these converters are used in the reliability assessment of the RBTS and IEEE-RTS standard test systems, and the effect of these power plants on improving the reliability indices of the power system is examined and the superior technologies in terms of improving the reliability indices of the power network are determinedIn order to examine the proposed method, the reliability models obtained for these converters are used in the reliability assessment of the RBTS and IEEE-RTS standard test systems, and the effect of these power plants on improving the reliability indices of the power system is examined and the superior technologies in terms of improving the reliability indices of the power network are determined.
[1] D. Magagna, A. Uihlein, “2014 JRC Ocean Energy Status Report”, European Commission Joint Research Centre, 2015.
[2] N. Ebuchi, Y. Toba, H. Kawamura, “Statistical study on the local equilibrium between wind and wind waves by using data from ocean data buoy stations”, J. Oceanogr., vol. 48, no. 1, pp. 77–92, 1992.
[3] M. Stålberg et al., “Full-Scale Testing of PM Linear Generator for Point Absorber WEC”, presented at the 6th EWTEC Conference, Glasgow, Aug. 28–Sep. 3, 2005.
[4] R. Waters et al., “Ocean wave energy absorption in response to wave period and amplitude–offshore experiments on a wave energy converter”, IET Renewable Power Generation, vol. 5, no. 6, pp. 465–469, 2011.
[5] "Home Page”, Oregon Wave Energy Trust, [Online]. Available: http://www.oregonwave.org/. Accessed on: Sep. 1, 2025.
[6] R. E. Harris, L. Johanning, J. Wolfram, “Mooring systems for wave energy converters: A review of design issues and choices”, presented at the Marec2004 Conf., 2004.
[7] P. Meisen, A. Loiseau, “Ocean energy technologies for renewable energy generation”, Global Energy Network Institute, 2009.
[8] G. Bevilacqua, B. Zanuttigh, “Overtopping Wave Energy Converters: general aspects and stage of development”, 2011.
[9] A. Ghaedi et al., “Reliability modeling of wave energy converters based on pelamis technology”, Elect. Power Syst. Res., vol. 227, p. 109977, 2024.
[10] A. Ghaedi, H. Gorginpour, “Reliability assessment of composite power systems containing sea wave slot‐coned generators”, IET Renewable Power Generation, vol. 14, no. 16, pp. 3172–3180, 2020.
[11] A. Ghaedi, R. Sedaghati, M. Mahmoudian, “Reliability modeling of different wave energy conversion technologies”, Elect. Eng., pp. 1–25, 2024.
[12] R. Billinton, R. N. Allan, Reliability Evaluation of Power Systems, 2nd ed. New York and London: Plenum Press, 1994.
[13] R. L. Cannon, V. D. Jitendra, J. C. Bezdek, “Efficient Implementation of the Fuzzy c-Means Clustering Algorithms”, IEEE Trans. Pattern Anal. Mach. Intell., vol. PAMI-8, no. 2, pp. 248-255, Mar. 1986.
[14] D. Silva, E. Rusu, C. Guedes Soares, “Evaluation of various technologies for wave energy conversion in the Portuguese nearshore”, Energies, vol. 6, no. 3, pp. 1344–1364, 2013