Host: The Japan Society of Mechanical Engineers
Name : International Conference on Power Engineering-2021(ICOPE-2021)
Date : October 17, 2021 - October 21, 2021
Although renewable energy has been introduced widely to reduce carbon dioxide emissions, it is difficult to meet the power demand because the output depends on the weather. In order to stabilize power grid systems, thermal power generation systems, especially gas turbine systems, are used frequently to regulate the electric power demand. One of functions required for electric power generators as load following is to improve in the load changing rate. However, most existing gas turbine systems have an issue that is the so-called “a booting-up congestion owing to the high temperature exhaust gas”. In this study, we propose an overground compressed air energy storage (CAES) system to solve the issue. The operation method of an existing medium-capacity gas turbine applying the overground CAES is presented to improve the load changing rate. It is shown that the time to reach the rated power output from the partial load can be reduced to 1/3 of the normal operation of the existing turbine system by increasing the air supply from the CAES.
