Nuggets' ten billion market for wind power reactive power compensation
reactive power compensation is another market after wind power low voltage ride through. However, due to insufficient attention from all parties, there are still some problems and differences in this market
in April, Wu Fei, the power director of cecep (Gansu) wind power Co., Ltd., was extremely busy. The reconstruction project of SVG reactive power compensation device for 201mw wind power project in Changma Township, Jiuquan, Gansu Province, which he was responsible for, started in April
according to the company's schedule, the reconstruction project needs to start on April 9 and 5 before June 1 The belt on the force measuring piston falls off or is too loose (so that the piston cannot run at a uniform speed). After completing the bidding for reactive power compensation devices, Wu Fei went into the work of the wind farm nonstop
in fact, similar to the recent bidding of cecep Changma wind farm, there are not a few wind farms that strive to complete the transformation project of reactive power compensation device before June. It is found that in a bidding, there have been dozens of bidding information related to reactive power compensation devices of wind farms since 2012
the reason why these wind farms choose this time point to transform the reactive power compensation device is mainly due to the impact of wind power and the upcoming implementation of the "new national standard" - Technical Regulations for wind farm access to power system on June 1. Now, the implementation of the new national standard has entered the countdown stage
it is understood that the standard was prepared by the national power regulatory Standardization Technical Committee in charge of the China Electricity Regulatory Commission, organized by the China Electric Power Academy (300215, Guba), the general electric power planning and Design Institute and other units, which stipulated the general technical requirements for wind farm consolidation, and jointly stipulated the relevant technical requirements for wind farm consolidation with the energy industry standard "technical code for large wind farm consolidation design"
this standard specifies the technical requirements for new or expanded wind farms connected to the power system through 110 (66) kV and above voltage level lines, modifies and improves the technical terms of active power control of wind farms, reactive power/voltage control based on the characteristics of PPS resin, active power prediction, wind farm testing, secondary part of wind farms, and adds the requirements for low voltage ride through capability of wind farms. Compared with the previous 2005 version of the standard and the exposure draft, the new national standard puts forward stricter standards for reactive power compensation of wind farms, which are equipment manufacturers of recycled plastic granulatorsThe large-scale fan disconnection accident in 2011 made the wind power industry realize the importance of low-voltage ride through technology of wind power. In August, 2011, the national energy administration examined and issued 18 important standards such as "technical specifications for the design of large wind farms", and the national wind power safety inspection mainly aimed at "low voltage ride through" by the Electricity Regulatory Commission was also launched in August. After more than half a year of transformation, all wind power manufacturers have successively announced that their own fans have completed the transformation of low voltage ride through
compared with the high attention caused by the low-voltage ride through transformation, the public's attention to the reactive power compensation transformation of wind farms is relatively small. However, some equipment enterprises have shifted their future market focus to reactive power compensation
Beijing fengjuneng is a wholly-owned subsidiary of Spanish wind to power system (w2ps). W2ps company accounts for 40% of the market share of low-voltage ride through transformation of wind turbines in Spain, and Beijing fengjuneng's main business in China is also to provide solutions for low-voltage ride through transformation
"but the next development focus of the company in China will be the transformation of reactive power compensation in wind farms." Wang Xianfeng, general manager of Beijing fengjuneng, said to
in his view, at present, domestic wind farms mostly focus on the low-voltage ride through transformation of wind turbines, while the transformation of reactive power compensation devices in wind farms has not attracted enough attention. Although some wind farms have been preliminarily transformed, with the current development speed of wind power installed capacity, they will still not meet the requirements of consolidation in the futureThe role of reactive power compensation device in the power supply system is to improve the power factor of electricity, reduce the loss of power supply transformer and transmission line, and improve the efficiency of power supply. For wind power, because in some cases, the output change of wind power is opposite to the load change of power, the reasonable setting of reactive power compensation device has greater significance for power regulation
in fact, at the beginning of the construction of the wind farm, certain reactive power compensation devices were installed. "But our wind farm uses the reactive power compensation device of old-fashioned capacitors. Now the technology of SVG reactive power compensation device is relatively mature. In order to meet the new requirements of merging, we have transformed this piece." Wu Fei told
it is understood that the more advanced reactive power compensation device in China is SVG (STATCOM static synchronous compensator). Compared with the old-fashioned capacitor, its compensation time is reduced from hundreds of milliseconds to 5-30 milliseconds, and the compensation accuracy is higher, the service life is long, and its own loss is small. It is particularly suitable for wind farms with large change frequency
on the other hand, the industry has always called for the establishment of "electric friendly wind farms", which in addition to having low voltage ride through capability and wind power prediction system, one of the important indicators is to have a control system that centrally optimizes the configuration of active power and reactive power
according to a "2011 wind power reactive power compensation Market Research Report", the growth rate of the wind power dynamic reactive power compensation equipment market will be higher than that of the wind power market. The report predicts that in the context of building strong smart power, the market space for dynamic compensation will reach 10.95 billion yuan from 2011 to 2020, and the compound annual growth rate of wind power dynamic compensation equipment in the next 10 years will reach about 9.7%
Li Qionghui, director of the New Energy Research Institute of the National Institute of power and energy, said that there is indeed a market demand for wind power reactive power compensation, but it will not be as large as low-voltage through the market, Because low voltage ride through is unique to wind power
although he values this market, Wang Xianfeng believes that there are still many problems to be solved in order to do a good job. It is understood that domestic wind power does not lack reactive power compensation equipment and technology, but how to centrally optimize the configuration of active power and reactive power control system, domestic wind farms are still lacking
"because the voltage level of the wind farm is relatively low and there are many other power projects, many people who really do system access and design are unwilling to do the reactive power compensation of the wind farm," said an industry insider who declined to be named, "Therefore, at present, the people who work in the wind farm to make this pc/abs alloy have good finishing and adhesive block market to the covering film are all non electric power design institute people, and there are indeed some projects that are relatively layman."
it is understood that although the state has issued some specifications for the overall system design of wind power reactive power compensation, there are no relevant standard instructions on how to operate and how to optimize the system
"a single fan is generally equipped with a reactive power compensation device, which has a certain reactive power compensation capacity. We are considering whether we can use the overall reactive power compensation capacity of the fan to meet the needs of a wind farm," Wang Xianfeng said. "At the same time, we are also worried that if the whole wind farm carries out centralized compensation, will the single capacity of the fan be invisible?"
in Wang Xianfeng's view, the reason why his company is optimistic about the domestic reactive power compensation market is precisely because it attaches importance to the current wind farm reactive power compensation system that is lack of optimization. The company he led is studying whether it can combine the comprehensive compensation system of fans and wind farms to optimize and coordinate the two technologies
at present, there are still some differences in the transformation of reactive power compensation. The transformation of reactive power compensation of single fan and the transformation of wind farm are often not coordinated, and manufacturers and operators often act independently. Wang Xianfeng is worried that in some old wind farms, even if the fans have reactive power compensation capacity, the wind farms cannot meet the current requirements
on the other hand, it is the cost of reactive power compensation device transformation. At present, the transformation of reactive power compensation in wind farms generally requires the demolition of old devices, civil engineering, and new equipment installation. According to Wu Fei, the amount of the 201mw wind power project he is responsible for alone the purchase of new equipment has reached about 8million, which can only be paid by the wind farm operator. If civil engineering and other costs are added, the cost will be as high as tens of millions. This undoubtedly adds a financial pressure to operators