马鞍山第二发电厂因煤质下降,锅炉燃烧不稳定,致使2004年发生非计划停运3次。因此实施了低汽温保护改造,锅炉MFT(除“汽包水位高高”或“2台空预器跳闸”之外)后,不联跳汽轮机,通过快速降负荷,利用锅炉余热,机组带少量负荷维持运行。锅炉吹扫完成后,重新点火,机组恢复正常运行,达到提高经济效益,降低非计划停运次数的目的。 Ma On Shan Second Power Plant due to declining coal, boiler combustion instability, resulting in unplanned outage in 2004 occurred 3 times. Therefore, the implementation of a low steam temperature protection transformation, the boiler MFT (except for the “drum high water level” or “two air preheater tripping”), the steam turbine is not linked, through rapid load shedding, the use of boiler waste heat, A small amount of load to maintain operation. After the completion of the boiler purge, re-ignition, the unit returned to normal operation, to improve economic efficiency and reduce the number of unplanned outage purposes.