A cost-effective two-stage optimization model for microgrid planning and scheduling with compressed air energy storage and preventive maintenance

Author(s):  
J. Gao ◽  
J.J. Chen ◽  
B.X. Qi ◽  
Y.L. Zhao ◽  
K. Peng ◽  
...  
Author(s):  
Robert Schainker ◽  
Michael Nakhamkin ◽  
John R. Stange ◽  
Louis F. Giannuzzi

Results of engineering and optimization of 25 MW and 50 MW turbomachinery trains for compressed air energy storage (CAES) power plant application are presented. Submitted by equipment suppliers, proposals are based on the commercially available equipment. Performance data and budget prices indicate that the CAES power plant is one of the most cost effective sources of providing peaking power and load management.


Author(s):  
M. Nakhamkin ◽  
M. Patel ◽  
L. Andersson ◽  
P. Abitante ◽  
A. Cohn

This paper presents the results of a project targeted at developing cost effective power plant concept with integrated Coal Gasification System (CGS) and with Compressed Air Energy Storage (CAES) plant. The developed concepts, denoted as CGS/CAES, provide for continuous operation of CGS and the reheat turboexpander train which are high temperature components, thus improving their operation and extending life resource. A parametric thermodynamic analysis is performed for several CGS/CAES concepts differentiated by their turbomachinery parameters, CGS arrangements, operating cycles, and hours of daily generation. A qualitative cost estimate is made using a variety of sources including published EPRI reports and extensive in-house cost data. A technical and cost comparison is made to the Integrated Gasification Combined Cycle (IGCC) plant.


Author(s):  
B. R. Clausen ◽  
M. Nakhamkin ◽  
E. C. Swensen

This paper presents preliminary engineering results for a 50 MW Compressed Air Energy Storage (CAES) plant for the Alabama Electric Cooperative, Inc. (AEC). The CAES plant would improve AEC’s power generation mix in two ways: (a) it would provide needed peaking/intermediate power (otherwise purchased) and (b) it would increase the load factor of economical baseload units. The paper presents the following: a. Comparative trade-off analysis of various conceptual arrangements with underground storage depths ranging between 1000 feet and 4000 feet. (The most economical concept is selected based on the consideration of economics of the overall plant including underground storage). b. Engineering and cost data, performance data, construction schedule and environmental data for the selected CAES plant concept. The results of this preliminary engineering effort prove that a CAES plant is a cost effective addition to AEC’s installed power generation plants.


Author(s):  
M. Nakhamkin ◽  
E. Swensen ◽  
R. B. Schainker ◽  
R. Pollak

A number of analyses concluded that in order to be cost effective a compressed air energy storage (CAES) plant should have a recuperator, which recovers the low pressure (LP) expander’s exhaust gas heat for preheating the cold cavern air before it enters the high pressure (HP) combustor(s). The use of a recuperator reduces heat rate, and accordingly fuel consumption, by as much as 20–25%. Therefore all feasibility studies on CAES performed for various utilities included a recuperator, and the first CAES plant to be built in the U.S., the 110 MW CAES plant for the Alabama Electric Cooperative (AEC) will utilize a recuperator with a 75% effectiveness.


Author(s):  
M. Nakhamkin ◽  
F. D. Hutchinson ◽  
J. R. Stange ◽  
R. B. Schainker ◽  
F. Canova

Results of engineering and optimization of 25 MW and 50 MW turbomachinery trains for compressed air energy storage (CAES) power plant application are presented. Proposals submitted by equipment suppliers are based on commercially available equipment. Performance data and budget prices indicate that the CAES power plant is one of the most cost effective sources of providing peaking/intermediate power and load management. The paper addresses CAES power plant integration procedure and the specifics of turbomachinery design.


Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3265
Author(s):  
Kristóf Kummer ◽  
Attila R. Imre

The time-range of applicability of various energy-storage technologies are limited by self-discharge and other inevitable losses. While batteries and hydrogen are useful for storage in a time-span ranging from hours to several days or even weeks, for seasonal or multi-seasonal storage, only some traditional and quite costly methods can be used (like pumped-storage plants, Compressed Air Energy Storage or energy tower). In this paper, we aim to show that while the efficiency of energy recovery of Power-to-Methane technology is lower than for several other methods, due to the low self-discharge and negligible standby losses, it can be a suitable and cost-effective solution for seasonal and multi-seasonal energy storage.


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