Investigation for 600 MW Supercritical Boiler´s Main Steam Temperature Control

This paper describes the 600 MW Supercritical Boiler´s Main Steam Temperature Control method and analysis the characteristic of the method. Operation information show that the main steam temperature overheating appears commonly in actual operation process. In this paper, 600MW super-critical boiler´s flue gas tube wall temperature was tested by setting probes in the furnace. The experimental results shown that the tube wall temperature changes swiftly with the load variation. There is significant temperature bias between testing cells at same super-heater stage. On this basis, a new control strategy was derived for 600 MW Supercritical Boiler´s Main Steam.