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Article

Probabilistic Reliability Enhancement Strategies of Hydro Dominant Power Systems under Energy Uncertainty

Power System Research Group, University of Saskatchewan, Saskatoon, SK S7N5A9, Canada
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Sustainability 2020, 12(9), 3663; https://doi.org/10.3390/su12093663
Received: 3 April 2020 / Revised: 25 April 2020 / Accepted: 27 April 2020 / Published: 1 May 2020
Climatic hydrological changes cause considerable seasonal and yearly energy variation in hydro dominant electric power systems. Extreme weather events are becoming more frequent in recent years causing dramatic impacts on energy availability in such systems. A significant amount of energy is often wasted due to reservoir overflow during wet seasons. By contrast, the scarcity of water in dry seasons results in inadequate power generation to meet the system demand, and therefore degrades overall system reliability. The high risks associated with an extreme dry hydrological condition should not be ignored in long term system adequacy planning of hydro dominant utilities. This paper presents a probabilistic method to incorporate diurnal, seasonal and yearly energy management strategies in run-of-river and storage type hydropower plant planning and operation in order to minimize the adverse impact of energy uncertainty and maintain long-term system adequacy. The impacts of reservoir capacity and demand side management on water utilization and system reliability are investigated with case studies illustrated using the IEEE Reliability Test System modified to create a hydro dominant system. The achieved benefits of reliability enhancement strategies are analyzed and compared in this paper. View Full-Text
Keywords: power system reliability; generation planning; hydropower; energy uncertainty; demand-side management power system reliability; generation planning; hydropower; energy uncertainty; demand-side management
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MDPI and ACS Style

Fang, F.; Karki, R.; Piya, P. Probabilistic Reliability Enhancement Strategies of Hydro Dominant Power Systems under Energy Uncertainty. Sustainability 2020, 12, 3663. https://doi.org/10.3390/su12093663

AMA Style

Fang F, Karki R, Piya P. Probabilistic Reliability Enhancement Strategies of Hydro Dominant Power Systems under Energy Uncertainty. Sustainability. 2020; 12(9):3663. https://doi.org/10.3390/su12093663

Chicago/Turabian Style

Fang, Fang, Rajesh Karki, and Prasanna Piya. 2020. "Probabilistic Reliability Enhancement Strategies of Hydro Dominant Power Systems under Energy Uncertainty" Sustainability 12, no. 9: 3663. https://doi.org/10.3390/su12093663

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