<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          Wind power on the rise

          Updated: 2011-11-28 09:39

          By Liu Yiyu (China Daily)

            Comments() Print Mail Large Medium  Small 分享按鈕 0

          Lagging grid development may hamper burgeoning industry

          HOHHOT - It only takes 60 minutes to fly from Beijing to Hohhot, the capital of the Inner Mongolia autonomous region in North China. However, Hohhot still enjoys an unlimited supply of electricity, while many places in China are facing their most severe power shortages for years.

          Wind power on the rise

          Workers deploying wind turbines at a wind farm in Jiujiang, Jiangxi province. China's installed wind-power capacity has doubled every year since 2005. [Photo/China Daily]

          The resource-rich region of Inner Mongolia is China's powerhouse and produces more electricity than it can consume. This vast region is famous for its abundant resources: It is the country's largest producer of coal and is home to the world's largest rare-earth mine.

          Now, it is rapidly becoming known as the wind-power center of China.

          Vowing to become the country's upland Three Gorges - the site of a massive hydroelectric dam - the province has set a target of installing 33 gigawatts (gW) of wind capacity by 2015, equal to 20 percent of the region's total power generation.

          By the end of June 2011, Inner Mongolia's grid-connected wind capacity had reached 12 gW, or 10 percent of the region's power generation, while the national average in China is 0.7 percent, according to the National Energy Administration (NEA).

          This has put the province on a par with the world's leading wind-power countries such as Denmark and Spain.

          Chifeng city, 600 kilometers (km) from Hohhot, is an ancient settlement in the east of the region. It is gradually becoming recognized as the world's largest wind-power cluster.

          The Dongshan wind plant forms part of a 670-megawatt (mW) wind farm operated by China Datang Corp Renewable Power Co, one of many State-owned wind-power developers.

          Dongshan has an installed capacity of 250 mW and has erected 158 wind turbines, each with a capacity of 2 mW, produced by Vestas Wind Systems AS, a leading Danish turbine manufacturer.

          The plant generates approximately 650 gigawatt hours (gWh) of power annually. That energy is sold to Northeast China Grid Co Ltd - one of five subsidiaries of the State Grid Corporation of China -through three dedicated transmission lines and a series of substations.

          Five years ago, the project was at an impasse. Its developers - the State-owned China Datang Corp, Kyushu Electric Power Co and Sumitomo Corp of Japan - had secured site-development rights, but banks were unwilling to take a risk on the project. The bankers were concerned about the high level of upfront capital expenditure for what was then a relatively new technology in China, and also by the absence of any long-term power-purchasing agreements.

          Lured by the huge market potential, Kyushu Electric entered into partnership with Datang to build part of the plant, even though the investment return from wind projects is much lower than that from coal-fired plants, according to the Japanese company.

          As one of the few foreign players in China's wind-power market, Kyushu Electric has witnessed the sector's development almost from scratch.

          Almost non-existent until a few decades ago, China's installed wind-power capacity has doubled every year since 2005. It increased more than 10-fold from 28 mW in 1996 to 42 gW by the end of 2010, although the share of wind power in the national energy resource is still small.

          "Our concern now is that better placed wind sites have been taken by developers, leaving those with relatively poor resources for the later arrivals, which gives investors less return on investment," said Aoyagi Tetsuji, the Japanese head of the joint project.

          The Dongshan plant is China's first and only model wind farm - that is, one deemed "grid-connection friendly" - to have met the technical requirements for grid compliance, according to the director, surnamed Bao.

          The farm has installed an advanced wind-power forecast system, which can predict potential disruptions and fluctuations in the amount of power available as far ahead as 48 hours.

          The other reason that the plant is so "grid-connection friendly" is that all the turbines have a Low Voltage Ride Through (LVRT) capability, a function absent from most wind turbines in China until two major malfunctions earlier this year caused 1,346 turbines to become disconnected from the grid.

          LVRT refers to the capability of turbines to maintain continuous operation during and after precipitous dips in voltage, allowing the power grid to be adjusted quickly and improves overall safety and stability.

          Efficient operation of the grid requires that a balance between generation and consumption must be constantly maintained to avert the possibility of disturbances in the quality and supply of power.

          Major mismatches or interruptions could lead to a system breakdown and power blackouts.

             Previous Page 1 2 Next Page  

          主站蜘蛛池模板: 久久精品国产亚洲av大全相关| 无遮挡1000部拍拍拍免费| 中文字幕在线无码一区二区三区 | 久久综合亚洲色一区二区三区| 色婷婷亚洲婷婷7月| 激情综合网激情五月俺也想| 久久久无码精品国产一区| 丰满人妻熟妇乱又仑精品| 亚洲精品天堂成人片AV在线播放| 久久96热在精品国产高清| 国产精品久久久久AV福利动漫 | 久久高清超碰AV热热久久| 亚洲欧美激情在线一区| 免费观看的av毛片的网站| 国产成人av电影在线观看第一页 | 国产羞羞的视频一区二区| 欧美人与zoxxxx另类| 午夜精品区| 好男人视频在线播放| 97精品国产91久久久久久久| 超碰人人超碰人人| 久久久国产精华液| 综合激情亚洲丁香社区| 中文字幕国产日韩精品| 欧美大胆老熟妇乱子伦视频| 国产免费午夜福利757| 国产超碰无码最新上传| 自拍日韩亚洲一区在线| 亚洲国产成人久久一区久久| 亚洲欧美日韩精品久久| 国产亚洲精品AA片在线播放天| 成年女人喷潮免费视频| 国产美女在线观看大长腿| 国产精品一区在线蜜臀| 视频日本一区二区三区| 97欧美精品系列一区二区| 国产在线自在拍91精品黑人| 欧美成人免费看片一区| 激情综合网五月激情五月| 任我爽精品视频在线播放| 亚洲午夜理论片在线观看|