IGCC (Integrated Gasification Combined Cycle) is an environmentally friendly and highly efficient energy source; however, it has high construction and maintenance costs, as well as operational complexity, leading to lower reliability. Since its comple...
IGCC (Integrated Gasification Combined Cycle) is an environmentally friendly and highly efficient energy source; however, it has high construction and maintenance costs, as well as operational complexity, leading to lower reliability. Since its completion in 2016, IGCC has improved its utilization rate to around 78% through efforts to stabilize its facilities. However, in order to achieve the target utilization rate of 85% set for IGCC, it is necessary to eliminate potential failure factors and minimize sudden shutdowns of the power plant. Currently, the potential issue with IGCC lies in the instability of gasifier load tracking, which is caused by the unstable oxygen supply pressure in ASU(Air Separation Unit), and it can lead to combustion instability, refractory material damage, and shortened equipment lifespan. Therefore, in order to address these problems, the causes of pressure instability and the drawbacks of existing control methods have been analyzed, and improvement measures have been proposed. These measures have been applied to the actual control system to validate their stabilization effects.