A Feasibility Analysis of Controlling a Hybrid Power System over Short Time Intervals

Tianyao Zhang, Diyi Chen, Jing Liu, Beibei Xu and Venkateshkumar M
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Tianyao Zhang: Institute of Water Resources and Hydropower Research, Northwest A&F University, Yangling 712100, China
Diyi Chen: Institute of Water Resources and Hydropower Research, Northwest A&F University, Yangling 712100, China
Jing Liu: Institute of Water Resources and Hydropower Research, Northwest A&F University, Yangling 712100, China
Beibei Xu: Institute of Water Resources and Hydropower Research, Northwest A&F University, Yangling 712100, China
Venkateshkumar M: Department of Electrical and Electronics Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Chennai 601103, India

Energies, 2020, vol. 13, issue 21, 1-21

Abstract: Literature about the importance of renewable energy resources, including wind and solar energy, is becoming increasingly important; however, these energy sources are unstable and volatile in nature, and are usually integrated with conventional energy sources, such as hydropower, forming hybrid power generation systems that maintain a stable grid. Short-term changes in wind speed or solar radiation intensity have a great impact on the stability of hybrid systems, and have been reported in the literature. However, reliable models to manage such systems are lacking, and previous studies have regarded the hour scale as the minimum baseline for systematic change. In this article, hybrid power systems are proposed that are controlled on very short time intervals. The results of a feasibility analysis of the proposed model indicate the viability of complementary hybrid systems in controlling and maintaining the stability, which are subjected to short durations of fluctuations in wind or solar radiation. The simulation results indicate that the influence of the shutdown of the wind turbine, with the regulation effect of the hydro power, is 3–5 times greater than that of the short-term wind turbulence fluctuation. When the hydro turbine is adopted to adjust the short-term fluctuation of solar radiation, the effect on the system was suppressed to 0.02–0.2 times of the former.

Keywords: hybrid system; wind speed fluctuation; solar radiation fluctuation; short time interval; hydro regulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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