Dispatch Optimization, System Design and Cost Benefit Analysis of a Nuclear Reactor with Molten Salt Thermal Storage

被引:7
|
作者
Soto, Gabriel J. [1 ]
Lindley, Ben [1 ]
Neises, Ty [2 ]
Stansbury, Cory [3 ]
Wagner, Michael J. [4 ]
机构
[1] Univ Wisconsin Madison, Dept Engn Phys, 1500 Engn Dr, Madison, WI 53706 USA
[2] Natl Renewable Energy Lab, Thermal Syst Grp, 15013 Denver West Pkwy, Golden, CO 80401 USA
[3] Westinghouse Elect Co, Lead Fast Reactor Syst Dev, 1000 Westinghouse Dr, Cranberry Township, PA 16066 USA
[4] Univ Wisconsin, Dept Mech Engn, 1415 Engn Dr, Madison, WI 53706 USA
关键词
advanced nuclear; lead-cooled fast reactor; molten salt; thermal energy storage; dispatch optimization; System Advisor Model;
D O I
10.3390/en15103599
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Variable renewable energy availability has increased the volatility in energy prices in most markets. Nuclear power plants, with a large ratio of capital to variable costs, have historically operated as base load energy suppliers but the need for more flexible operation is increasing. We simulate the techno-economic performance of a 950 MWt nuclear power plant, based on the Westinghouse lead-cooled fast reactor, coupled with molten salt thermal storage as a method for flexible energy dispatch. We use the System Advisor Model to model the nuclear reactor thermal power input and power cycle operating modes. We combine this robust engineering model with a mixed-integer linear program model for optimized dispatch scheduling. We then simulate the coupled nuclear and thermal storage system under different market scenarios with varying price volatility. We find that the coupled plant outperforms the base plant under markets where energy price peaks fluctuate by a factor of two or more about the mean price. We show that a calculated power purchase agreement price for the plant improves by up to 10% when operating under California energy market conditions. Sensitivity analysis on the thermal storage cost shows that the optimal design remains unchanged even when doubling costs.
引用
收藏
页数:23
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