日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Business

SERC inspecting wind farms after disconnections

By Liu Yiyu | China Daily | Updated: 2011-08-05 07:58

SERC inspecting wind farms after disconnections

A worker connects power cables to a wind farm in Laian, Anhui province. The authorities will inspect wind-power facilities this month after technical failures were reported. Xu Yong / for China Daily

BEIJING - The State Electricity Regulatory Commission (SERC) will conduct nationwide inspections this month of wind power facilities after a series of large-scale disconnections that threatened the stability of the power grid.

SERC said on Wednesday that the inspections, which will run all month, will include wind farm safety management, operations, grid connections and the actual wind turbines.

The move follows four massive incidents in Jiuquan, Gansu province, one of the most important wind power bases in China, in which a total of 2,978 turbines were disconnected from the grid.

According to SERC, 35 equipment failures were reported in Jiuquan alone so far this year.

The absence of Low Voltage Ride Through (LVRT) systems in the facilities involved was cited by SERC as the main factor in these failures.

LVRT systems allow wind turbines to maintain continuous operation during and after precipitous voltage dips, so the grid can adjust more quickly. The systems improve overall grid safety and stability.

LVRT systems are required under the standards of China's largest power distributor, the State Grid Corp, which is in charge of power integration. But State Grid lacks the power to enforce the rule for wind farms that want to sell their output to the grid.

Though China has the world's fastest-developing wind power sector and the largest installed wind capacity worldwide, it still lacks a national standard on grid integration of wind power.

National standards, which are being jointly drafted by the National Energy Administration, SERC and State Grid Corp, are expected to establish fundamental rules for the wind power industry, requiring that all turbines be equipped with LVRT systems to ensure grid stability.

Most of the 34,000 installed wind turbines in China don't have LVRT systems. It costs between 10,000 yuan ($1,538) and 500,000 yuan to upgrade a single wind turbine to be LVRT-compliant, depending on the turbine model, industry experts said.

Xinjiang Goldwind Science & Technology Co, a leading turbine producer, said it is upgrading its machines to meet the anticipated technical requirements of the national standards.

The absence of LVRT systems is not the only possible reason for the system failures, said Qin Haiyan, secretary-general of the China Wind Energy Association. With that possibility in mind, the SERC inspectors will also order wind farm operators to install static VAR compensators, which regulate voltage.

Other major issues including wind power wastage will also be reviewed during the inspection, SERC said.

China Daily

(China Daily 08/05/2011 page13)

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 青娱乐手机免费视频 | 爽爽影院在线看 | 色婷亚洲| 97av在线 | 久久国产精品久久久久久久久久 | 在线观看网 | 亚洲综合色婷婷 | 国产精品俺来也在线观看 | www.4hu影院 | 一级啪啪片 | 国产视频在线免费观看 | 国产高清视频在线 | 日本精品一二区 | 亚洲97 | 国产色产综合色产在线观看视频 | 欧美第一视频 | 龙珠z在线观看 | 精品国产成人在线 | 国产精品视频在线观看 | 久久综合一个色综合网 | 人人九九精品 | 亚洲电影免费观看高清完整版在线观 | 日韩精品 电影一区 亚洲 | 成人免费影 | jdav视频在线观看免费 | 啪啪小视频网站 | 全部免费国产潢色一级 | 亚洲第一区视频在线观看 | 一级黄色大片 | 99精品视频在线观看re | 日本一级特黄视频 | 美日韩一区二区三区 | 婷婷丁香色综合图亚洲 | 色屋视频 | 日韩在线免费视频 | 成人在线国产 | 久草在钱| 国产做a | 91国色| 久一久久 | 老司机精品视频个人在观看 |