|
| Remarkable Power Generation Benefit |
| The Three Gorges Hydropower Plant (TGHP) contains twenty-six turbine-generator units, each with installed capacity of 700MW, not including the six more 700MW units in the Right Bank Underground Powerhouse under construction. Its total installed capacity amounts to 18200MW, and its expected annual average power generation accounts up to 84.7 TWH, so the TGHP ranks the biggest one in the world with remarkable power generation benefit. At present, TGHP electricity is sent unceasingly to Central China, East China, Guangdong, and Chongqing with the maximum transmission range of 1000 Km. |
| |
| Major Parameters of the TGHP units and abroad power plants |
| Parameters |
Three Gorges Project
CHINA |
Grand Coulee
U.S.A. |
Itaipu
Brazil/Paraguay |
Guri
Venezuela |
Krasnoyarsk
Russia |
| Turbine |
|
|
|
|
|
| Maximum Head(m) |
113.0 |
108.2 |
126.7 |
146 |
100.5 |
| Rated Head(m) |
80.6 |
86.9 |
112.9 |
130 |
93 |
| Minimum Head(m) |
71.0(61.0) |
67.0 |
82.9 |
111 |
76 |
| Rated Output (MW) |
710 |
612/716 |
715 |
610 |
508 |
| Maximum Output(MW) |
852 |
827 |
740/808 |
730 |
508(505) |
| Rated Spinning Speed(r/min) |
75 |
85.7 |
90.9/92.3 |
112.5 |
93.8 |
| Runner Diameter(m) |
9.525(9.800) |
9.86/9.22 |
8.45 |
7.163 |
7.5 |
| Generator |
|
|
|
|
|
| Rated Capacity(MW) |
778 |
718 |
823.6/737.0 |
700 |
500 |
| Maximum Capacity(MW) |
840 |
710/825.6 |
823.6/766 |
805 |
|
| Frequency(Hz) |
50 |
60 |
50/60 |
60 |
50 |
| Cooling |
Water Cooling of Statar |
Water Cooling of Statar |
Water Cooling of Statar |
Air Cooling |
Water Cooling of Statar |
| Rated Voltage(KV) |
20 |
15 |
18±5% |
18 |
15.75 |
| Insulation Levels |
F |
B |
F |
B |
|
| Thrust Load(t) |
4,050(4,100) |
4,700 |
4,056&4,400 |
2,667 |
|
| Inner Diameter of Stator(m) |
18,500(18,800) |
18,790 |
16,000 |
13,650 |
16,100 |
|
|
Benefits 