IP Start-up Control for 300MW Turbine Unit with Bypass System

Based on the analysis of characters of 300MW unit IP start-up, an approach with bypass system about turbine control has been explored in this paper. Control model for IP start-up is given. The pre-warm control of IP start-up and the start-up mode switching are discussed in detail. Control logic for main valve, valve exchanging and bypass system are properly designed. The opening curve of IP regulation valve is given. The schedule is successfully applied in the IP start-up of #8 turbine system, Shalingzi power plant, China. The actually operation results shows that the control logic is right and reasonable. It's available for the system requirements.