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600 MW generators
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| res_max_depth =
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| plant_operator =
| plant_operator =
| plant_turbines = 8 × 550 [[Megawatt|MW]] [[Francis-type]]
| plant_turbines = 8 × 600 [[Megawatt|MW]] [[Francis-type]]
| plant_capacity = 4,400 MW
| plant_capacity = 4,800 MW
| max_capacity =
| max_capacity =
| plant_annual_gen =
| plant_annual_gen =
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}}
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The '''Jinping-II Dam''' ({{zh|s=锦屏二级水电站|t=錦屏二級水電站|p=Jǐnpíng Èrjí Shuǐdiàn Zhàn}}), also known as the '''Jinping-II Hydropower Station''', is a [[gravity dam]] on the "Jinping Bend" of the [[Yalong River]] (Yalong Jiang) in [[Sichuan]], China. Construction on the project began in 2007 and it was complete in 2014. It's [[hydroelectric]] power station has a 4,400 MW installed capacity.
The '''Jinping-II Dam''' ({{zh|s=锦屏二级水电站|t=錦屏二級水電站|p=Jǐnpíng Èrjí Shuǐdiàn Zhàn}}), also known as the '''Jinping-II Hydropower Station''', is a [[gravity dam]] on the "Jinping Bend" of the [[Yalong River]] (Yalong Jiang) in [[Sichuan]], China. Construction on the project began in 2007 and it was complete in 2014. It's [[hydroelectric]] power station has a 4,800 MW installed capacity.


While [[Jinping-I Dam|Jinping-I]] relies on a conventional tall dam and large reservoir to supply water, Jinping-II uses a much smaller dam, located 7.5 km downstream of Jinping-I, to divert water into four 16.6 km long headrace tunnels. These tunnels connect to a later point on the same river where the water level is much lower, providing a large head of water without flooding a large area of land.
While [[Jinping-I Dam|Jinping-I]] relies on a conventional tall dam and large reservoir to supply water, Jinping-II uses a much smaller dam, located 7.5 km downstream of Jinping-I, to divert water into four 16.6 km long headrace tunnels. These tunnels connect to a later point on the same river where the water level is much lower, providing a large head of water without flooding a large area of land.
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== Characteristics ==
== Characteristics ==
A 37&nbsp;m tall, 162&nbsp;m long [[sluice gate|sluice]] dam on the west-side of the Jinping bend diverts water into four 16.6&nbsp;km long headrace tunnels towards the power station. At the power station, the water turns eight 550&nbsp;MW [[Francis turbine]]s with a total capacity of 4400&nbsp;MW before being discharged back into the river. The dam will is made of 3.4&nbsp;million m<sup>3</sup> of material.<ref name=CHINCOLD>{{cite web|title=Jingping|url=http://www.chincold.org.cn/news/li080321-12-Jinping-1.pdf|publisher=Chinese Committee on Large Dams|accessdate=12 June 2013}}</ref>
A 37&nbsp;m tall, 162&nbsp;m long [[sluice gate|sluice]] dam on the west-side of the Jinping bend diverts water into four 16.6&nbsp;km long headrace tunnels towards the power station. At the power station, the water turns eight 600&nbsp;MW [[Francis turbine]]s with a total capacity of 4400&nbsp;MW before being discharged back into the river. The dam will is made of 3.4&nbsp;million m<sup>3</sup> of material.<ref name=CHINCOLD>{{cite web|title=Jingping|url=http://www.chincold.org.cn/news/li080321-12-Jinping-1.pdf|publisher=Chinese Committee on Large Dams|accessdate=12 June 2013}}</ref>


About 30% of the power from the Jinping dams is used locally, and 70% will be set to eastern China via ±800&nbsp;kV bipolar [[HVDC]] transmission lines.<ref name=Shiyong09>{{Citation |title=Jinping hydropower project: main technical issues on engineering geology and rock mechanics |url=http://www.chincold.org.cn/chincold/rootfiles/2011/05/20/1304576729397814-1305874580933872.pdf |first1=Wu |last1=Shiyong |first2=Shen |last2=Manbin |first3=Wang |last3=Jian |doi=10.1007/s10064-010-0272-4 |journal=Bulletin of Engineering Geology and The Environment |date=30 March 2010<!--August 2010 issue--> |volume=69 |issue=3 |pages=325–332 }}</ref>
About 30% of the power from the Jinping dams is used locally, and 70% will be set to eastern China via ±800&nbsp;kV bipolar [[HVDC]] transmission lines.<ref name=Shiyong09>{{Citation |title=Jinping hydropower project: main technical issues on engineering geology and rock mechanics |url=http://www.chincold.org.cn/chincold/rootfiles/2011/05/20/1304576729397814-1305874580933872.pdf |first1=Wu |last1=Shiyong |first2=Shen |last2=Manbin |first3=Wang |last3=Jian |doi=10.1007/s10064-010-0272-4 |journal=Bulletin of Engineering Geology and The Environment |date=30 March 2010<!--August 2010 issue--> |volume=69 |issue=3 |pages=325–332 }}</ref>

Revision as of 19:26, 7 January 2015

Jinping-II Dam
Jinping-II Dam is located in China
Jinping-II Dam
Location of Jinping-II Dam in China
Official nameJinping-II Hydropower Station
LocationSichuan, China
PurposePower
StatusOperational
Construction began2007
Opening date2014
Owner(s)Ertan Hydropower Development Company, Ltd.
Dam and spillways
ImpoundsYalong River
Height37 m (121 ft)
Length162 m (531 ft)
Reservoir
CreatesJinping-II Reservoir
Total capacity14,280,000 m3 (11,580 acre⋅ft)
Active capacity5,020,000 m3 (4,070 acre⋅ft)
Catchment area102,663 km2 (39,638 sq mi)
Jinping-II Hydropower Station
Commission date2012–2014
Turbines8 × 600 MW Francis-type
Installed capacity4,800 MW

The Jinping-II Dam (simplified Chinese: 锦屏二级水电站; traditional Chinese: 錦屏二級水電站; pinyin: Jǐnpíng Èrjí Shuǐdiàn Zhàn), also known as the Jinping-II Hydropower Station, is a gravity dam on the "Jinping Bend" of the Yalong River (Yalong Jiang) in Sichuan, China. Construction on the project began in 2007 and it was complete in 2014. It's hydroelectric power station has a 4,800 MW installed capacity.

While Jinping-I relies on a conventional tall dam and large reservoir to supply water, Jinping-II uses a much smaller dam, located 7.5 km downstream of Jinping-I, to divert water into four 16.6 km long headrace tunnels. These tunnels connect to a later point on the same river where the water level is much lower, providing a large head of water without flooding a large area of land.

History

Harnessing hydropower on the Jinping bend of the Yalong River has been in planning for decades. The length of the bend is 150 km, but the downstream part of the river on the opposite side of the mountain is separated by only 16 km. In that distance, there is an elevation drop of 310 m, creating an excellent situation for hydroelectricity production. Two projects were planned for the bend, the Jinping I and Jinping II with a combined capacity of 8,400 MW. Planning for the projects began in the 1960s under the former Sichuan and Shanghai design institutes along with the Ministry of Water Resources and Electric Power. They produced the "Reinvestigation Report on The Yalong River bend (Jinping)". In July 1965, the Jinping Hydropower Engineering Headquarters was set up and designs for the Jinping 1 and Jinping 2 would progress with the East China Investigation and Design Instititute .[1]

Construction on the Jinping-II started on January 30, 2007.[2] The dam's first generator was commissioned in December 2012, the second in January 2013.[3] The fifth generator went online in May 2014 and the seventh in October 2014.[4][5] The eighth and final generator was commissioned on 26 November 2014.[6]

Characteristics

A 37 m tall, 162 m long sluice dam on the west-side of the Jinping bend diverts water into four 16.6 km long headrace tunnels towards the power station. At the power station, the water turns eight 600 MW Francis turbines with a total capacity of 4400 MW before being discharged back into the river. The dam will is made of 3.4 million m3 of material.[7]

About 30% of the power from the Jinping dams is used locally, and 70% will be set to eastern China via ±800 kV bipolar HVDC transmission lines.[8]

See also

References

  1. ^ The Big River Bend and The "Jinping Dream"
  2. ^ 雅砻江最大水电站锦屏二级水电站30日正式开工 (in Chinese). Xinhua. January 30, 2007. {{cite web}}: Unknown parameter |trans_title= ignored (|trans-title= suggested) (help)
  3. ^ 光伏再获重大政策扶持 12股迎重大拐点 (in Chinese). 591hx. May 3, 2013. Retrieved May 6, 2013.
  4. ^ 国投电力：锦屏二级水电站5号机组已经投产，为何不见公告？ (in Chinese). Caixin Media. May 15, 2014. Retrieved May 28, 2014. {{cite web}}: Unknown parameter |trans_title= ignored (|trans-title= suggested) (help)
  5. ^ [公司]国投电力锦屏二级电站7号机组投产 (in Chinese). Sina Finance. October 31, 2014. Retrieved November 19, 2014. {{cite web}}: Unknown parameter |trans_title= ignored (|trans-title= suggested) (help)
  6. ^ ""West to East" backbone project Jinping Power All units put into operation" (in Chinese). 26 November 2014. Retrieved January 7, 2015.
  7. ^ "Jingping" (PDF). Chinese Committee on Large Dams. Retrieved June 12, 2013.
  8. ^ Shiyong, Wu; Manbin, Shen; Jian, Wang (March 30, 2010), "Jinping hydropower project: main technical issues on engineering geology and rock mechanics" (PDF), Bulletin of Engineering Geology and The Environment, 69 (3): 325–332, doi:10.1007/s10064-010-0272-4
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