久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

Chill wind blowing for turbine industry

By Liu Yiyu (China Daily)

2011-06-03 09:32

Government to impose stringent new standards after energy wastage

Chill wind blowing for turbine industry

A worker at a wind turbine in Xinjiang Uygur autonomous region. China increased its total wind power capacity to 41.8 gigawatts in 2010, up 62 percent from the previous year. [Photo / China Daily] 

BEIJING - Wind turbine manufacturers are feeling the industry performance pinch for the first time after five years of good times in China, the world's fastest-growing wind power market, said industry experts.

Following recent incidents where a total of 1,346 wind turbines were disconnected from the power grid on April 17 in Gansu and Hebei provinces, China is planning to issue stringent national standards for wind turbine manufacturers.

The incidents, which caused energy wastage, reduced electricity output to millions of customers.

The national standards, being drawn up by the government, are expected to set the tone in the industry, requiring that all installed wind turbines are equipped with low-voltage ride-through (LVRT) capability to ensure stability to the power grid.

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

"This will put considerable pressure on wind turbine makers and wind farm operators to upgrade China's 34,000 wind turbines," said Li Yinghua, deputy director of the security regulatory bureau under the State Electricity Regulatory Commission (SERC).

Compulsory national standards for wind-generated electricity are needed to regulate grid compliance and build a strong smart grid in the country, industry experts said.

At present, most of China's installed wind turbines do not have the LVRT capability and domestic manufacturers are upgrading their machines in the wake of the recent incidents in Gansu and Hebei provinces.

The State Grid, China's largest power distributor, issued the current standards in practice for wind power operators in 2009, but these were not enforced nationally.

It costs between 10,000 and 500,000 yuan to upgrade a single wind turbine by installing LVRT, depending on the turbine model, said experts from Denmark-based Vestas Wind Systems, a leading international wind turbine manufacturer.

Related readings:
Chill wind blowing for turbine industry Wind turbine makers see fresh breeze abroad
Chill wind blowing for turbine industry China plans 30gW offshore wind power by 2020
Chill wind blowing for turbine industry China fine-tunes wind turbine industry
Chill wind blowing for turbine industry 
China grids to connect 90 m kW of wind power by 2015

"Some turbine models merely need software upgrading, while others require much more than that," said Shi Haifeng, an expert with the Finland-based The Switch, a leading supplier of wind turbine components.

Wind turbine manufacturers are capable of installing the LVRT technology but some wind farm operators do not want the function partly due to cost concerns, an expert from a European wind turbine manufacturer said.

"LVRT capability is not the only reason for the system's failure," said Qin Haiyan, secretary-general of the China Wind Energy Association. "Even with the technology, such disruptions are still inevitable because the power grid is a system."

Meanwhile, the current standards also suggest wind farm operators to install the Static Var Compensator, which costs at least hundreds of thousands yuan and can maintain steady voltage and stabilize the power system.

According to the European company expert who declined to be named due to company policy, the wind farms in Gansu and Hebei, where the disconnection took place, did not have the Static Var Compensator, which could help to regulate voltage and regulate the power system.

China increased its total wind power capacity to 41.8 gigawatts in 2010, up 62 percent from the previous year.

However, for the first time since 2005, growth in wind power is slowing down, partly due to more controls from the government to prevent the industry from overheating. The industry had been experiencing triple-digit growth before 2009.

Paper kettle

An Italian designer, Andrea Ponti, designed a recycled paper-made water container for the Milano Expo 2015, according to yankodesign.com.

Bamboo treecycle

The Bamboo treecycle developed by MGT Engineering Ltd is on dispay at the 21th China Int'l Bicycle and Motor Fair.

Charger captures power from Wifi

A US electronics company invented a charger that draws its power from Wifi signals.

World Environment Day

World Environment Day is an annual event that is aimed at being the biggest and most widely celebrated global day for positive environmental action. The theme this year is Forests: Nature At Your Service.

China International Green Industry Expo 2010

The China International Green Industry Expo 2010 (CIGIE 2010) is an important international green industry exhibition hosted by the Chinese government and held at the Beijing Exhibition Center, Nov 24 to 27.

China Wind Power 2010 Conference&Exhibition

China Wind Power 2010 is the largest and most important international wind power conference and exhibition in China.

主站蜘蛛池模板: 亚洲午夜成激人情在线影院 | 毛片视频网站 | 国产精品偷伦费观看 | 国产欧美久久久精品 | 亚洲加勒比久久88色综合一区 | 久草网址| 中文字幕一区在线播放 | 欧美 日韩 国产 在线 | 日本三级香港三级妇三 | 国产成人3p视频免费观看 | 黄色美女网站免费 | 久久久久久亚洲精品中文字幕 | 国产va精品网站精品网站精品 | 一区二区三区国模大胆 | 亚洲欧美成人综合在线 | 国产50页| 香蕉视频一级片 | 国内亚州视频在线观看 | 日本69xxxxxxxxx69 日本a v 黄 日本aaaa级 日本aaaa级毛片在线看 | 美女一级片 | 亚洲国内精品自在线影视 | www.亚色| 日韩永久在线观看免费视频 | 国产97公开成人免费视频 | 国产一级成人毛片 | 2021国产精品系列一区二区 | 国产不卡视频在线观看 | 国产一级精品毛片 | 伊人五月天婷婷琪琪综合 | 国产看色免费 | 亚洲精品成人一区 | 久久国产精品-国产精品 | 欧美69xx | 波多野结衣3女同在线观看 波多野结衣aⅴ在线 | 久热久草 | 日韩精品一区二区三区高清 | 国产精品视频永久免费播放 | 92精品国产自产在线观看 | 精品久久久久久久高清 | 成人亚洲网站 | 九九色综合网 |