Abstract: The working principle and structure of plasma igniting burner were introduced, and the configuration of its auxiliary system was described. When the plasma ignition system is applied in tangentially fired boiler, the FSSS control logic needs some modification, and this modification was analyzed. The plasma ignition operating procedure was described; the matters needing attention while plasma ignition burner is putting into operation and the problems existing in its operation were pointed out. Aiming at great amount of oil consumption in unit startup and shutdown process, the plasma ignition technology was adopted in a 600MW unit of Inner Mongolia Huadian Baotou Power Generation Corporation Limited; and the unit cold start and hot start, the unit shutdown with variable parameters, the repairs of induced draft fan, forced draft fan, primary air fan and air preheater were realized without oil consumption, and good economical effects were obtained.

Key words: plasma device, working principle, auxiliary system, control logic, ignition control, practical application