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It only takes 60 minutes to fly from Beijing to Hohhot, thecapital 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 powershortages for years. The resource-rich region of Inner Mongolia is China'spowerhouse and produces more electricity than it can consume. Thisvast region is famous for its abundant resources: It is thecountry's largest producer of coal and is home to the world'slargest rare-earth mine. Now, it is rapidly becoming known as the wind-power center ofChina. Vowing to become the country's upland Three Gorges - the siteof a massive hydroelectric dam - the province has set a target ofinstalling 33 gigawatts (GW) of wind capacity by 2015, equal to 20percent of the region's total power generation. By the end of June 2011, Inner Mongolia's grid-connected windcapacity had reached 12 GW, or 10 percent of the region's powergeneration, 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 leadingwind-power countries such as Denmark and Spain. Chifeng city, 600 kilometers (km) from Hohhot, is an ancientsettlement in the east of the region. It is gradually becomingrecognized as the world's largest wind-power cluster. The Dongshan wind plant forms part of a 670-megawatt (MW) windfarm operated by China Datang Corp Renewable Power Co, one of manyState-owned wind-power developers. Dongshan has an installed capacity of 250 mW and has erected158 wind turbines, each with a capacity of 2 mW, produced by VestasWind Systems AS, a leading Danish turbine manufacturer. The plant generates approximately 650 gigawatt hours (GWh) ofpower 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 ofsubstations. Five years ago, the project was at an impasse. Its developers -the State-owned China Datang Corp, Kyushu Electric Power Co andSumitomo Corp of Japan - had secured site-development rights, butbanks were unwilling to take a risk on the project. The bankerswere concerned about the high level of upfront capital expenditurefor what was then a relatively new technology in China, and also bythe absence of any long-term power-purchasing agreements. Lured by the huge market potential, Kyushu Electric enteredinto partnership with Datang to build part of the plant, eventhough the investment return from wind projects is much lower thanthat 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 fromscratch. Almost non-existent until a few decades ago, China's installedwind-power capacity has doubled every year since 2005. It increasedmore 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 isstill small. "Our concern now is that better placed wind sites have beentaken by developers, leaving those with relatively poor resourcesfor the later arrivals, which gives investors less return oninvestment," said Aoyagi Tetsuji, the Japanese head of the jointproject. The Dongshan plant is China's first and only model wind farm -that is, one deemed "grid-connection friendly" - to have met thetechnical requirements for grid compliance, according to thedirector, surnamed Bao. The farm has installed an advanced wind-power forecast system,which can predict potential disruptions and fluctuations in theamount of power available as far ahead as 48 hours. The other reason that the plant is so "grid-connectionfriendly" is that all the turbines have a Low Voltage Ride Through(LVRT) capability, a function absent from most wind turbines inChina until two major malfunctions earlier this year caused 1,346turbines to become disconnected from the grid. LVRT refers to the capability of turbines to maintaincontinuous operation during and after precipitous dips in voltage,allowing the power grid to be adjusted quickly and improves overallsafety and stability. Efficient operation of the grid requires that a balance betweengeneration and consumption must be constantly maintained to avertthe possibility of disturbances in the quality and supply of power. Major mismatches or interruptions could lead to a systembreakdown and power blackouts. Source:China Daily Date:2011-11-28. We are high quality suppliers, our products such as Free Standing Kiosk Manufacturer , China Bill Payment Kiosk for oversee buyer. To know more, please visits Interactive Information Kiosk.
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