Performance Analysis of Thermocline Energy Storage Proposed for the 1 MW Saguaro Solar Trough Plant

Solar Energy ◽  
2006 ◽  
Author(s):  
Gregory J. Kolb ◽  
Vahab Hassani
Keyword(s):  
Energy Storage ◽  
Power Plants ◽  
Storage System ◽  
Cost Effective ◽  
Energy Storage System ◽  
Simulation System ◽  
Department Of Energy ◽  
Time Dependent ◽  
Parabolic Trough ◽  
Storage Technology

The 1 MW Saguaro solar parabolic trough power plant began operation in December 2005. The plant will initially operate without an energy storage system. However, recent studies predict a thermocline-type storage should be the most cost-effective storage concept for solar parabolic troughs power plants. If such a system can be successfully demonstrated at Saguaro, future trough plants will likely adopt this storage technology. A thermocline storage system for Saguaro has been proposed by Department of Energy (DOE) laboratories and the solar industry. In this paper, the time-dependent performance of the proposed storage system was evaluated with a new model of the plant based on the TRNSYS simulation system. Results indicate that the proposed system should work well at Saguaro. The paper describes the TRNSYS model and the engineering insights gleaned from annual performance simulations of the plant.

Conceptual Design of a 2× Trough for Use Within Salt and Oil-Based Parabolic Trough Power Plants

2010 ◽  
Vol 132 (4) ◽  
Author(s):  
Gregory J. Kolb ◽  
Richard B. Diver
Keyword(s):  
Power Plants ◽  
Storage System ◽  
Cost Effective ◽  
Energy Storage System ◽  
The United States ◽  
Parabolic Trough ◽  
High Concentration ◽  
Current Technology ◽  
Technical Advances ◽  
Solar Field

Recent studies in the United States suggest that parabolic trough levelized energy costs (LECs) can be reduced 10–15% through integration of a large salt energy storage system coupled with the direct heating of molten salt in the solar field. While noteworthy, this relatively small predicted improvement may not justify the increased technical risks. Examples of potential issues include increased design complexity, higher maintenance costs, and salt freezing in the solar field. To make a compelling argument for development of this new system, we believe that additional technical advances beyond that previously reported will be required to achieve significant LEC reduction, greater than 25%. The new technical advances described include the development of a high-concentration trough that has double aperture and optical concentration of current technology. This trough is predicted to be more cost-effective than current technology because its cost ($/m2) and thermal losses (W/m2) are significantly lower. Recent trough optical performance improvements, such as more accurate facets and better alignment techniques, suggest a 2× trough is possible. Combining this new trough with a new low-melting point salt now under development suggests that a LEC cost reduction of ∼25% is possible for a 50 MW, 2× salt plant relative to a conventional (1×) 50 MW oil plant. However, the 2× trough will also benefit plants that use synthetic oil in the field. A LEC comparison of 2× plants at sizes ≥200 MW shows only a 6% advantage of salt over oil.

scholarly journals Battery Storage-Based Frequency Containment Reserves in Large Wind Penetrated Scenarios: A Practical Approach to Sizing

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3065 ◽  
Author(s):  
Monika Sandelic ◽  
Daniel-Ioan Stroe ◽  
Florin Iov
Keyword(s):  
Energy Storage ◽  
Wind Power ◽  
Power Plants ◽  
Storage System ◽  
Economic Assessment ◽  
Energy Storage System ◽  
Battery Energy Storage System ◽  
Battery Energy Storage ◽  
Battery Energy ◽  
Large Wind

This paper focuses on the sizing of a battery energy storage system providing frequency containment reserves in a power system with a large wind power penetration level. A three-stage sizing methodology including the different aspect of battery energy storage system performance is proposed. The first stage includes time-domain simulations, investigating battery energy storage system dynamic response and its capability of providing frequency reserves. The second stage involves lifetime investigation. An economic assessment of the battery unit is carried out by performing the last stage. The main outcome of the proposed methodology is to choose the suitable battery energy storage system size for providing frequency containment reserve from augmented wind power plants while fulfilling relevant evaluation criteria imposed for each stage.

Energy Storage Using Low-Pressure Feedwater

1985 ◽  
Vol 107 (3) ◽  
pp. 569-573 ◽  
Author(s):  
C. M. Harman ◽  
S. Loesch
Keyword(s):  
Energy Storage ◽  
Power Plants ◽  
Storage System ◽  
Energy Storage System ◽  
Low Pressure ◽  
Steam Power ◽  
Low Pressure Turbine ◽  
Availability Analysis ◽  
Steam Power Plants ◽  
And Storage

A method for increasing the peak output of steam power plants through use of a low-pressure feedwater storage system is presented. The generalized availability analysis involves only the low-pressure turbine, low-pressure feedwater heaters, and the storage system. With daily cycling and storage charging at near base load conditions, the turnaround efficiency of the energy storage system was found to approach 100 percent. Storage system turnaround efficiency is decreased when the energy is stored during plant part-load operation.

scholarly journals Design Considerations for the Liquid Air Energy Storage System Integrated to Nuclear Steam Cycle

2021 ◽  
Vol 11 (18) ◽  
pp. 8484
Author(s):  
Seok-Ho Song ◽  
Jin-Young Heo ◽  
Jeong-Ik Lee
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Power Sources

A nuclear power plant is one of the power sources that shares a large portion of base-load. However, as the proportion of renewable energy increases, nuclear power plants will be required to generate power more flexibly due to the intermittency of the renewable energy sources. This paper reviews a layout thermally integrating the liquid air energy storage system with a nuclear power plant. To evaluate the performance realistically while optimizing the layout, operating nuclear power plant conditions are used. After revisiting the analysis, the optimized performance of the proposed system is predicted to achieve 59.96% of the round-trip efficiency. However, it is further shown that external environmental conditions could deteriorate the performance. For the design of liquid air energy storage-nuclear power plant integrated systems, both the steam properties of the linked plants and external factors should be considered.

Energy Storage System and Its Power Electronic Interface

2020 ◽  
pp. 309-321
Author(s):  
Baseem Khan ◽  
Samuel Degarege ◽  
Fsaha Mebrahtu ◽  
Hassan Alhelou
Keyword(s):  
Energy Storage ◽  
Electronic Device ◽  
Performance Indicator ◽  
Power Grid ◽  
Supply And Demand ◽  
Storage System ◽  
Cost Effective ◽  
Energy Storage System ◽  
Power Electronic ◽  
System Energy

This chapter examines the modeling and simulation of energy storage (battery, flywheel, etc.) systems interfaced to the power grid by using power electronic device, like chopper module, Rectifier module, and filter circuits, which are essential to the load balance between supply and demand, and to eliminate harmonics and to ensure efficient, cost effective, and reliable operations. Energy storage system in power grid is the same as memory in computer system. Energy efficiency is a key performance indicator for energy storage system. The energy storage system is the most promising component to enhance the system reliability and flexibility.

Energy Storage System and Its Power Electronic Interface

2022 ◽  
pp. 183-195
Author(s):  
Baseem Khan ◽  
Samuel Degarege ◽  
Fsaha Mebrahtu ◽  
Hassan Alhelou
Keyword(s):  
Energy Storage ◽  
Electronic Device ◽  
Performance Indicator ◽  
Power Grid ◽  
Supply And Demand ◽  
Storage System ◽  
Cost Effective ◽  
Energy Storage System ◽  
Power Electronic ◽  
System Energy

This chapter examines the modeling and simulation of energy storage (battery, flywheel, etc.) systems interfaced to the power grid by using power electronic device, like chopper module, Rectifier module, and filter circuits, which are essential to the load balance between supply and demand, and to eliminate harmonics and to ensure efficient, cost effective, and reliable operations. Energy storage system in power grid is the same as memory in computer system. Energy efficiency is a key performance indicator for energy storage system. The energy storage system is the most promising component to enhance the system reliability and flexibility.

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