| 词条 | Longyangxia Dam |
| 释义 |
| name =Longyangxia Dam | name_official = | image = Longyangxia oli 2017005 lrg.jpg | image_size = | image_caption = Satellite picture of the Longyangxia Dam reservoir and solar power park | image_alt = | location_map = China | location_map_size = | location_map_caption = | coordinates = {{coord|36|07|20|N|100|55|06|E|type:landmark|display=inline,title}} | country =China | location = Gonghe County, Qinghai Province | status =In use | construction_began =1976 | opening =1992 | cost = | owner = | dam_type = Arch gravity dam | dam_length ={{Convert|396|m|ft|0}} | dam_height ={{Convert|178|m|ft|0}} | dam_width_crest ={{Convert|18.5|m|ft|0}} | dam_width_base ={{Convert|80|m|ft|0}} | dam_volume = | dam_crosses =Yellow River | spillway_count = | spillway_type =Service, gate-controlled on crest | spillway_capacity = | res_name = Longyangxia Reservoir | res_capacity_total ={{Convert|24.7|e9m3|acre.ft}} | res_catchment = {{Convert|752443|km2|sqmi|0}} | res_surface ={{Convert|383|km2|sqmi|0}} | res_max_depth = | res_tidal_range = | plant_operator = | plant_commission = | plant_decommission = | plant_type = | plant_hydraulic_head ={{Convert|122|m|ft|0}} (design) | plant_turbines = 4 x 320 MW | plant_capacity = 1,280 MW 1,400 MW (max. planned) | plant_annual_gen = 6 TWh | website = | extra = }}{{Infobox power station | name = Longyangxia Dam Solar Park | name_official = | image = | image_size = | image_caption = | image_alt = | location_map = | location_map_size = | location_map_caption = | location_map_alt = | coordinates = | country = | location = | status = | construction_began = | commissioned = 2014 | decommissioned = | cost = {{CNY|6}} billion[1] | owner = | operator = | solar_type = | solar_csp_technology = | solar_concentration = | solar_collectors = | solar_collectors_area = | solar_aperture_area = | solar_site_area = | solar_site_resource = | ps_units_operational = | ps_units_manu_model = | ps_units_uc = | ps_units_planned = | ps_units_cancelled = | ps_units_decommissioned= | ps_thermal_capacity = | ps_electrical_capacity = 850 MW | ps_electrical_cap_fac = | ps_storage_hours = | ps_annual_generation = | ps_annual_gen_year = | website = | extra = }} The Longyangxia Dam is a concrete arch-gravity dam at the entrance of the Longyangxia canyon on the Yellow River in Gonghe County, Qinghai Province, China. The dam is {{Convert|178|m|ft|0}} tall and was built for the purposes of hydroelectric power generation, irrigation, ice control and flood control. The dam supports a 1,280 MW power station with 4 x 320 MW generators that can operate at a maximum capacity of 1400 MW. Controlling ice, the dam controls downstream releases to reservoirs lower in the river, allowing them to generate more power instead of mitigating ice. Water in the dam's 24.7 billion m3 reservoir provides irrigation water for up to {{Convert|1000000|ha|acre|0}} of land.[2] The dam is composed of its main body and a gravity pier and secondary dam on both its left and right flank. The dam's service spillway contains two {{Convert|12|m|ft|0}} wide gates that discharge water into two {{Convert|260|m|ft|0}} and {{Convert|280|m|ft|0}} long chutes. Downstream discharges are also controlled by a similar single-chute middle outlet and the lower outlet works.[2] Photovoltaic power stationIn 2013 a solar photovoltaic station was built with a nameplate capacity of 320 MWp (Phase I), covering {{convert|9|km2}}.[3] An additional 530 MWp (Phase II) was completed in 2015,[4] covering further {{convert|14|km2}},[5] making Longyangxia Dam Solar Park, with 850 MWp capacity, one of the largest photovoltaic power stations in the world. The solar power station is integrated with the hydroelectric power station. The park is coupled to one of the hydroelectric turbines, which automatically regulate the output to balance the variable generation from solar before dispatching power to the grid. This limits the problems connected to variable solar generation while helping to conserve water.[4] See also{{stack|{{Portal|China|Water|Renewable energy}}}}
References1. ^[https://www.theguardian.com/environment/2017/jan/19/china-builds-worlds-biggest-solar-farm-in-journey-to-become-green-superpower "China builds world's biggest solar farm in journey to become green superpower"], The Guardian. 19 January 2017 {{Yellow River dams}}2. ^1 {{cite web|title=Longyangxia Hydropower Project|url=http://www.chincold.org.cn/dams/rootfiles/2010/07/20/1279253974093926-1279253974095162.pdf|publisher=Chinese National Committee on Large Dams|accessdate=7 January 2011}} 3. ^{{cite web|url=http://www.hydropower.org/blog/case-study-solar-pv%E2%80%93hydro-hybrid-system-at-longyangxia-china|archiveurl=https://web.archive.org/web/20160417014109/http://www.hydropower.org/blog/case-study-solar-pv%E2%80%93hydro-hybrid-system-at-longyangxia-china|title=Case study: solar PV–hydro hybrid system at Longyangxia, China|archivedate=17 April 2016|publisher=}} 4. ^1 {{cite web|url=http://www.esi-africa.com/features/global-hydropower-market-shows-promise-for-future/|title=Global hydropower market shows promise for future|date=10 March 2016|publisher=ESI-Africa.com|accessdate=12 May 2016}} 5. ^{{Cite news|url=http://www.scmp.com/news/china/society/article/2073747/powerful-images-worlds-largest-solar-energy-farms-are-china|title=China’s world-beating solar farm is almost as big as Macau|last=Ye|first=Josh|date=2017-02-24|work=South China Morning Post|access-date=2017-06-27|archive-url=|archive-date=|dead-url=|language=en}} 8 : Hydroelectric power stations in Qinghai|Dams in China|Dams on the Yellow River|Arch-gravity dams|Dams completed in 1992|Photovoltaic power stations in China|1992 establishments in China|Hainan Tibetan Autonomous Prefecture |
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