Bureau of the sources of energy was released in December 2021 " wind electric field is transformed upgrade and retire administrative measure " seek an opinion. The ability that is old old unit changes upgrade offerred clear but the policy of abide is propped up. Because the technical level of group of inchoate wind electric machinery is restricted, the utilization rate of wind resource did not develop old standard, as wind n price roll out in the round, speed of iteration of technology of wind report lamina is accelerated, the blade ability that is aimed at group of electric machinery of old old wind changes upgrade enter industry line of vision, derive include pneumatic function to transform, blade lengthens the function that waits for many types to promote a service, make the popular task that domain of current wind report studies. In recent years, length of lamina of made of baked clay class of million of onshore wind report comes from 50-60 rice growth 80-90 rice. Professional orgnaization is calculated show, inchoate 70 meters lamina is lengthened control to 80 meters, corresponding electricenergy production promotes data to be able to amount to 4-5% . But from cogent in light of has carried out project experience, blade is lengthened return existence rife problem and flaw, involve risk of intellectual property, security, construction safety and evaluate the many respects such as the effect. Spread out will tell, the lamina of brand of the property right of aircrew of orphan of a few blame, inchoate abroad designs a material, these blueprint, file includes later period transform a design to all need normal accredit to just can be used, the most ability on current market changes a service, accredit respect changes to still be put in very big uncertainty in blade. On security, of blade alter involve load security, advocate control a process safety of intensity of main body of newer, lamina, to changing the influence of paddle system and transmission system also wants a consideration inside. Especially blade main body and stick the security issue that receives a share, assure to lengthen a section to secure do not fall off, still do not have perfect solution. Blade ability changes to pull one hair and move ability of systemic “ lamina to change to it may be said pulls one hair and use the whole body. So owner just should be had discriminate ability certainly, the supplier that forms pair of blade ability to change is chosen, early days design is evaluated, metaphase safety is supervised, and the capability that later period effect evaluates. Professional personage reminds inside ” course of study point out. Nevertheless, compare with photograph of above problem hidden trouble, blade lengthens the effect to be not an industry beforehand of appraise so remarkable, just be this type of role is vital. Not merely an expert that is engaged in dimension of wind electricity use expresses: “ lamina ability changes more finite to electricenergy production of group of promotion wind electric machinery, just perfect to the small effect matter of aircrew itself. ”Sheet lengthens for, ever ability changes to disclose to the author from trade public figure: “ promotes demand in the light of electricenergy production and character, blade lengthens processing the effect is not distinct, but relatively at changing the major investment of blade, lengthening is ‘ really a kind of kind that authority of two benefit photograph takes his to weigh ’ . He expresses ” , change blade is to promoting the effect of electricenergy production between 10-20% , because unit is individual difference and wind resource circumstance, the promotion space of actual electricenergy production is far apart. In the meantime, capital pay back period also is the horizontal stroke changes a bank before in blade ability. Generally speaking, blade ability changes investment pay back period to be 4-5 about year, long even 7-8 year. According to CWEA data, install machine 1.0MW the following aircrew to occupy up to report of wind of the our country end 2020 3.1% , 1.5-1.9MW (it is 1.5MW aircrew entirely almost) occupy 31.1% . That is to say, 1.5MW and the following aircrew are occupied than be close to 35% , and major concentration was installed 2010 machine. the 1.5MW that controls to moving more than 10 years and the following aircrew, whether to still have is what lengthen or change necessary? Ningxia releases " about beginning Ningxia “ of electric field of old old wind updates pilot announcement with big acting small ” " in, 1.5MW and the following, undivided much annual interest count low aircrew with Xiaoshi, be encouraged to regard as preferential develop pilot target. Once 1.5MW is the following of aircrew with large generation small form a trend, lengthen in the light of blade kind no matter business comes up from feasibility or economy saying is not particularly dominant. The expert expresses, be in current inside this empty schedule for showing motion pictures in a theater, aircrew lamina is lengthened wait for ability to change a service to still may have 2-3 year market time. Be inferior to first focusing if difficult problem of this individual character counts saying blade is lengthened is not promotion of promotion electricenergy production to need option, so blade Fu ice is to cause key of electricenergy production losing absolutely, and it is the ” of difficult problem of sex of a “ that perplexes industry. Group of wind electric machinery is in 0 times and when zero moves, encounter mist of humid cold cold air, ice and snow, rainwater, salt, when encountering cooling water especially, can produce freeze phenomenon. The meeting after blade Fu is put on the ice produces very great harm, to year the loss of electricenergy production amounts to 1%-10% less, abominable area achieves 20%-50% . The research that “ defends deice technology inside course of study at present is roughly heat deice, mechanical deice and coating deice 3 technologies direction. But the program with no matter be power development company, lamina,produce the enterprise, tripartite enterprise such as scientific research to all do not have integrated effect better currently, also do not have relative standard standard. ” has professional personage respecting. Air heats and report heats the deice effect of two kinds of plan is better, but early days capital throws bigger, construction complex and time is longer, still need to solve the problem that prevents thunder; Mechanical deice no more than namely artificial deice, application is wider but artificial operation take time is arduous, need to stop machine bear electricenergy production loss. Come down quite, coating deice is scanty water coating more, it is current the prevent and kill off of wind report lamina with simple, low also cost puts construction on the ice plan. At present home has had the applied project of a few small lot. “ but go up in the application of a few projects, scanty water coating also is put in proper corrupt practice, remarkable is the frozen phenomenon that cannot put an end to the surface completely, cannot abiding the ice that prevent Fu, after putting a loop on the ice through a few rounds of frozen, be in harmony especially, its fight frozen ability to drop apparently. Afore-mentioned professional personages point out ” . The frozen problem that how solves wind report lamina is difficult problem of technology of a sex, also lack corresponding technical standard and method of test and verify, it is ability of wind report lamina changes, the difficult problem that level of promotion electricenergy production needs to capture mainly. Current, potential of the market after wind report is tremendous, but the carry dimension ability that is aimed at blade changes those who reach industry of technical innovation far from to be experienced so hopeful, this also is one of reasons that this profession did not form a competitive company. Retire before eye premise especially, go up to press small development current to fall greatly, blade ability corrects the development situation that facing opposite awkwardness.