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Wind power equipment manufacturing industry because of security problems deceleration

       At the recent National Development and Reform Commission issued the "Guiding Catalogue of Industrial Structure Adjustment (2011 Edition)" in comparison with the 2005 edition of the directory, "during" infinite beauty of wind power is low-key.

    2.5 MW wind turbine is no longer subject to the following policies to encourage

    Encouraged in the new Catalogue for the Guidance of new energy categories, involving solar, wind, biomass,ratchet tie dowm ocean and tidal energy, and many other content, and by contrast is not difficult to find in the categories of solar energy and biomass The ink can be much higher than with the wind.

    In the 10 sub-items,booster cables the reference biomass are five, there are four solar mentioned mentioned in ocean energy and geothermal energy are one, while wind power only in the "complementarity of wind power and photovoltaic power generation system technology development and application of "the child was in passing, revealed the policy implications behind the thought-provoking.

    The industry believes that the installed capacity of wind power, policy support and technology development, battery clip and many other far exceeds that of other new forms of energy, in the current grid units, and other problems with the elimination of backward unresolved cases, the policy is lagging behind the development of more more inclined solar and biomass, is also reasonable.

    tow rope also mentioned some of the obvious contradiction between industry overcapacity, which is only related to new energy sources wind power.

    National Development and Reform Commission on the interpretation of the Catalogue, said: "such as wind power and other overheated investment in some of the emerging energy industry, mainly due to strict regulation in the countries 'two high a capital' investment in fixed assets, etc. Under the circumstances, capital influx into the new equipment manufacturing industry, mainly due to. if not to be regulated, not only will allow businesses to fall into difficulties in production and operation, will also affect industrial innovation and the pace of structural adjustment. "

    Last year, the Ministry of Industry has issued a "wind power equipment manufacturing industry access standards" (draft). In this paper, for the first time that the new wind turbine manufacturing company must have a production capacity of 2.5 megawatts or more single unit capacity, and in the National Development and Reform Commission issued the Guiding Catalogue of Article XIV of mechanical categories, the first time explicitly incentives for more than 2.5 megawatts of wind power equipment machine and more than 2.0 MW wind power plant control systems, converters and other key components.

    The industry believes that this means that countries in the wind power industry policy adjustments have been through this directory implement the guidance, the future does not meet the policies of wind power machine or spare parts manufacturing companies, the policy will not be further encouraged.

    Recently, the China Electricity Regulatory Commission informed the Jiuquan large-scale wind turbine power wind blows off the net a few incidents, the main reason is related to the grid does not have the low voltage across the fan capacity. In addition to unit capacity limits, the policy implication of the backward even further out of the wind turbine. This good form has been the leading position in the industry related to listed companies.

    Frequency of large-scale wind turbine it off Wangshi

    According to recent communications, such as wind farms near Jiuquan, Gansu Province have occurred in 3 of large-scale wind turbine off Wangshi it.

    February 24, 2011, Gansu Jiuquan Wind Power Wind Power Company Limited 35B west of the first switching interval of the first C-phase cable fault insulation breakdown, resulting in three-phase short circuit, causing the first wind farm including the west, including The 10 wind turbines in the 274 because of the typhoon does not have low voltage ride through capability, the system voltage drops off the network. Large wind turbine off-grid, the result of wind farm reactive power compensation device capacitors do not have the automatic switching function, the excess reactive power, voltage increased rapidly, causing six of 300 wind turbines due to the typhoon-voltage protection action off-grid. In addition, there are 24 accidents during the typhoon frequency power unit due to the more limited protection action offline. The accident off-grid wind turbine to reach 598 units, loss of output 840.43MW, accounted for before the accident in Jiuquan wind power output of 54.4%, resulting in the main network frequency by the Northwest Power Grid's 50.034Hz before the accident to a minimum 49.854Hz.

    April 17, 2011, Gansu Guazhou synergy of dry mouth of the West Wind Power Co., Ltd. The second wind farm 35C2-09 high-pressure side of the cable box changes the first breakdown, 35D2-10 three-phase junction box transformer cable breakdown, 35C2 , 35D2 two feeder trip, the removal of 25 typhoon motor group. Subsequently, 35kV power distribution room 35D Bus PT Cabinet on fire, 3502 switch trip, the removal of 97 typhoon motor group. While the other 12 accidents resulting in 536 wind turbines because of the typhoon does not have low voltage ride through capability, the system voltage drops off the network. Large wind turbine off-grid, the result of part of the wind farm reactive power compensation capacitors do not have the automatic switching function, the excess reactive power, voltage increased rapidly, causing 44 of Block 2 in the typhoon wind turbines for voltage protection Action off the network. Off-grid wind turbine to reach 702 units, loss of output 1006.223MW, accounted for before the accident in Jiuquan wind power output of 54.17%, resulting in the main network frequency by the Northwest Power Grid's 50.036Hz before the accident to a minimum 49.815Hz.

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