Abstract: For the startup and shutdown process of turbine No.1 and No.2 in Urumqi Thermal Power Plant of Huadian Xinjiang Power Generation Company Limited, the electrically driven feed pump was adopted for boiler water feeding, its feed ability is 30% rated capacity of the boiler. When the units load reached 100MW, the unit load up had to be stopped for rolling the turbofeed pump, this would not only delay the units load up, but also increase the house service consumption rate. Application of an improved scheme, in which the turbofeed pump rolled by a standby steam source is used to feed the boiler instead of the electrically driven feed pump, solved the problem of load up limitation and saved the house service consumption rate, favorable economical benefits have been obtained.

Key words: electrically driven feed pump, turbo-feed pump, auxiliary steam header, water feeding, improved scheme