Abstract
As an important solution to issues regarding peak load and renewable energy resources on grids, large-scale compressed air energy storage (CAES) power generation technology has recently become a popular research topic in the area of large-scale industrial energy storage. At present, the combination of high-expansion ratio turbines with advanced gas turbine technology is an important breakthrough in energy storage technology. In this study, a new gas turbine power generation system is coupled with current CAES technology. Moreover, a thermodynamic cycle system is optimized by calculating for the parameters of a thermodynamic system. Results show that the thermal efficiency of the new system increases by at least 5% over that of the existing system.
Highlights
The problem of electric power supply shortages has recently been alleviated somewhat with the accelerated pace of global power construction
The analysis results regarding the influence of PH and PI on the efficiency of the improved system suggest that the maximum system efficiency ranges between 140–150 bar
The conclusions drawn from the analysis and calculations are as follows: (1) The efficiency of the improved compressed air energy storage (CAES) system increased by 9% with the adoption of a high-pressure gas turbine that includes a reheat process and the utilization of heat energy in the inter-cooling process based on the second-generation CAES system
Summary
The problem of electric power supply shortages has recently been alleviated somewhat with the accelerated pace of global power construction. This shortage has restricted economic development and long-term residential electricity use levels. A peak-valley difference in electricity is observed on the Energies 2015, 8 user side of a power grid, which requires the power supply to change with electricity load. The peak load capacity on the power generation side cannot meet cities’ increasing electricity load demands. The pressure of regulating the peak of the main power grid has increased with the growth of the proportion of residential electricity consumption, as well as the increased use of air conditioners and popular household appliances [1]
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