Shanghai Electric 1 million units (Siemens technology)
l Total hydrogen charging volume: 100 m3
l Nominal hydrogen pressure: 0.5 MPa
l Highest hydrogen Pressure: 0.52 MPa
l Humidity inside the machine: -25～-5℃
l Purity minimum: 95%
l Cold hydrogen temperature: ≯46 ℃ (Chiller water design temperature is 39°C)
l Hydrogen leak hydrogen: ≤12 m3/d (under standard conditions)
Harbin generator 1 million units (Toshiba Technology)
Total hydrogen charge volume: 125 m3
Nominal hydrogen pressure: 0.5 MPa
Maximum hydrogen pressure: 0.52 MPa
lInternal humidity: - 25～ -5℃
lMinimum purity: 95%
lHydrogen temperature: ≯46℃ (chiller design water temperature 39℃)
lLeakage quantity d hydrogen: ≤ 10 m3/d (under standard conditions)
Hydrogen consumption: ≤23 m3/d (under standard conditions)ons standard)
Dongfang Electric 1 million units (Hitachi Technology)
l Total hydrogen charging volume: 143 m3
l Rated pressure d hydrogen: 0.5 MPa
l Maximum hydrogen pressure: 0.52 MPa
l Humidity inside the machine: - 25～-5℃
l Minimum purity: 95%
l Cold hydrogen temperature: ≯48℃ (colder design water temperature 39℃)
l Hydrogen leak: ≤12 m3/d (under standard conditions)
Hydrogen replacement during start-up generally requires two to three times the amount of hydrogen
QF - Turbine Generator, S - water cooling (if it is SN, it is in water, indicating that the generator cooling method is water, hydrogen and hydrogen), 140 - is the rated power of the generator, in MW, 2 - the number of magnetic poles of the generator number.
In fact, generator cooling methods can be divided inton air cooling, hydrogen cooling (there are two methods of external cooling and internal cooling) and water cooling (internal cooling). Different combinations can also be formed, such as: water-hydrogen-hydrogen, i.e. stator winding is water cooled, rotor winding is hydrogen cooled, stator core is cooled by hydrogen, water-water-hydrogen, i.e. the stator winding and the rotor winding are water cooled and the stator core is water cooled 'hydrogen.