To solve a problem that, in a start-up method for starting a shaft by leading auxiliary steam into a high-pressure steam turbine, high-pressure and high-temperature auxiliary steam is necessary and, as a result, it is necessary to reduce the pressure and the temperature of the auxiliary steam in the case of using for other use and installation of a pressure reducing device and a temperature lowering device in the power plant invites a rise of the equipment cost and it is not profitable in economy.
In a method of steam-starting a single shaft combined cycle power plant by leading auxiliary steam, during a period from a time point when activation of a gas turbine 1 is started to a time point when the number of revolution of the gas turbine 1 reaches the number of revolution, at which self-operation by combustion gas is enabled, valve open degree of an auxiliary steam amount control valve 25 and valve open degree of a low-pressure main steam control valve 18 are respectively adjusted, and the auxiliary steam from a starting boiler 22 is supplied to a low-pressure turbine 3L through a low-pressure turbine steam supply system to generate driving force in the low-pressure steam gas turbine 3L, and the gas turbine, the high-pressure steam turbine, the low-pressure steam turbine and a generator are integrally controlled for speed-up.
TATEISHI MANABU
TOFUSA MASAYUKI
KITAGUCHI KOICHI
ITO MASAO
MATSUSHITA TAKEHIKO
TOSHIBA SYST TECH
| JPH08284615A | 1996-10-29 | |||
| JPH04159402A | 1992-06-02 | |||
| JPH07158407A | 1995-06-20 | |||
| JPH11336510A | 1999-12-07 | |||
| JPH08284615A | 1996-10-29 |
Hiroshi Shimura