Abstract:
It is the fact that oscillation phenomenon of furnace
pressure of a unit in a thermal power plant can negatively
affect the normal operation of the power station. If this
phenomenon is not damped fast enough, it may cause the
furnace shutdown. This paper presents a newly practical
control strategy regarding the design and improvement of
the control part of an oil burner system for a thermal power
plant in Vietnam. The control scheme aims to avoid the
shutdown of the furnace flame when the furnace pressure
oscillates. The control solution proposed in this paper
includes two parts: a decrease of the duration of oil burner
start sequence and an automatical start-up of the oil burner
when the furnace pressure oscillates. The solution has been
successfully and efficiently applied for a 330MW unit of the
thermal power station in Vietnam. Applying the proposed
control strategy, the stability, reliability and high efficiency
of the unit of the thermal power station can be guaranteed.
Practical results during the operation of the unit present
superior achievements of the proposed control solution over
those of an operating unit with gas and air control system in
manual control mode.
