In view of the increase of shutdown time and the increasing frequency of startup of coal-fired units

combining with the structural characteristics and startup mode of 600 MW supercritical coal-fired units

the research and application practice were carried out from the aspects of shutdown maintenance

equipment renovation and optimization of the operation mode of key auxiliary engines

and obvious results were obtained. It reduces the power consumption

coal consumption and water consumption when the unit starts up

improves the economy

and improves the comprehensive competitiveness of the unit in the power market environment.