On the morning of July 3, the Shanghai International Offshore Wind Power and Wind Power Industry Chain Conference held a seminar on "China and Global Offshore Wind Power Planning and Project Progress". President Fang Tao of the New Energy Engineering Design Institute introduced the progress of offshore wind power projects in Jiangsu and Zhejiang provinces. Case. The contents of the North Star Wind Power Network finishing site are as follows:

 

[Fang Tao]: Distinguished guests, distinguished guests, ladies and gentlemen, good morning, the topic of my speech today is the progress of offshore wind power projects in Jiangsu and Zhejiang provinces.

 

The speech is divided into three parts, the first part is the development of offshore wind power at home and abroad, the second part is the progress of offshore wind power projects in Jiangsu Province, and the third part is the progress of offshore wind power projects in Zhejiang Province.

 

By the end of 2013, the cumulative production of wind power in the world was 70.5 million kW, of which Europe accounted for 53%, or about 6.56 million kW. In Europe, the United Kingdom, Denmark, Belgium, and Germany are the leading countries, accounting for a larger share. Germany will have a relatively large and sustainable development in the next few years. So far, China's offshore wind power has been completed and put into production to reach 400,000 kW, currently ranking fifth in the world. We also expect that in the next few years, especially starting from 2015, China's offshore wind power production capacity may reach 2 million kW or more, that is to say, by 2020, China will definitely build more than 10 million kW.

 

From 1991 to 2000 to 2013, the offshore wind power distance in Europe has ranged from 1 to 3 kilometers, to the next dozen kilometers, and now 20 kilometers or more. The water depth is also from 2 to 4 meters, to more than ten meters, to more than 20 meters, and the single-machine capacity is also increasing, which is a development trend.

 

The total investment cost of offshore wind power abroad has also gone through three periods. In the initial stage of development, its cost is relatively high. Now it is about 38,000 per kilowatt at the current exchange rate of EUR/RMB, which is an approximate figure. Later, due to the investment in technology, the cost is also reduced, about 18,000 per kilowatt. Later, with the increase of wind power plants, some problems of wind power projects gradually appeared. In order to control risks, the current unit cost of offshore wind power in Europe is about RMB 30,000 per kilowatt, which is an approximate figure. my country's current offshore wind power investment units are between 16,000 to 21,000 or 22,000.

 

In terms of the composition of the entire investment project, we have also made a comparison. The foreign statistics are about 7% of the foreign statistics. The supply of fan equipment, including tower barrels is 42% abroad, about 40% in China, 4% in foreign countries for basic construction, and 6% to 8% in our domestic statistics, as well as the cost of basic works. Almost 15%. The overseas statistics of electrical appliances are a little higher, 23%; the domestic statistics are slightly lower. I understand that because the current domestically built offshore wind power, including research, is basically a little closer to the shore, and many offshore wind farm booster stations are onshore. Therefore, the demand for this piece of submarine cable, including equipment, will be lower, which is an approximate figure.

 

China's offshore wind power has begun to take off. The domestic offshore wind power planning started in 2007. First, Jiangsu Province began to plan the offshore kilowatt-based wind farm along the coast of Jiangsu. By 2009, based on the offshore wind power in Jiangsu Province, a work outline for offshore wind power was formulated, and the planning of offshore wind power in coastal provinces and cities was launched. At present, the offshore wind power plans in Shanghai, Jiangsu, Shandong, Hebei, Guangdong, Liaoning and Dalian have been approved by the state. Zhejiang, Fujian and Hainan are in the process of examination and approval, and Guangxi is in the process of preparation.

 

At present, the total installed capacity of offshore wind power has been built nationwide is 400,000 kW (including prototype). Deducting some prototypes, because the statistics of the prototypes are not necessarily comprehensive or correct, the deducted prototypes are already 5 projects, and the total installed capacity is 35.4 kilowatts. Among them, the first phase of Shanghai Donghai Bridge is 100,000 yuan, and the remaining 4 projects are all in Jiangsu Province. There are currently about 6 offshore wind power plants under construction, with a total of 780,000 kilowatts. At present, 6 projects to be built have been approved, with a total of 1.35 million kilowatts. These projects are mainly concentrated in Jiangsu and Shanghai, and others that have been approved for construction, or those that have not been approved yet, are also to be constructed, mainly in Zhejiang, Fujian, Hebei, Guangdong and other provinces.

 

On June 5, the National Development and Reform Commission issued the offshore wind power price policy, which is a hot topic now. The introduction of this policy: First, this electricity price is for projects that were put into operation before 2013, which means that they must be put into operation in 2016 to enjoy this price. Offshore 0.85 yuan, intertidal zone 0.78 yuan. This document continues to encourage the acquisition of offshore wind power project development rights in the form of concessions. Of course, the winning bid price cannot be higher than the on-grid electricity price stipulated by the state. After 2017, this electricity price will be studied separately according to the situation. This is the main meaning of this question.

 

We understand this electricity price document. First, the country should emphasize the steady development of offshore wind power, instead of rushing on it and making steady progress without getting ready.

 

Second, in general, wind power prices for offshore wind power are still relatively low. According to the current price, because our East China Institute has also made a lot of statistics, basically many projects in many provinces across the country have undergone some statistical calculations. According to the current price, the projects that can be put into production in 2016 are estimated to be about 2 million to 2 million yuan. 3 million or so. Then it is also calculated according to the current current price and the current price level. According to the current price calculation, it is estimated that the projects that meet this price are about 3 million to 5 million.

 

Third, after 2017, the determined electricity price will generally not be higher than the electricity price released this time. This is mainly due to the further development of offshore wind power technology and the further reduction of offshore construction costs.

 

Fourth, some provinces with poor resource conditions and engineering construction conditions, such as Zhejiang Province and Guangdong Province, have not very good resources, and construction conditions including typhoons are relatively serious. Therefore, such electricity prices are relatively tight for these two provinces, and it is more difficult to do these projects. Whether or not there will be additional subsidy policies in these regions is also a consideration. Shanghai has issued a subsidy one month after the introduction of this electricity price policy, with a subsidy of 1 cents on land and 2 cents at sea.

 

After this electricity price policy came out, within ten days, the National Energy Administration issued a notification from the Department of New Letter No. 2014 (45). This notice requires the legal development and reform commissions of coastal provinces and municipalities to submit five, energy bureaus to submit the recent offshore wind power, development and construction of alternative projects. These projects are required to be put into operation by the end of 2016, and the price is 0.85 yuan.

 

The project reported this time has several requirements. First, there should be no restrictive factors for grid access; second, it must require more than one year of contact wind measurement in the long run; third, the project has completed a pre-feasible project. . That is to say, these projects have been reported to the National Energy Administration on June 24.

 

I will introduce the second part, the progress of offshore wind power projects in Jiangsu Province.

 

According to the plan, Jiangsu Province has formed three relatively concentrated million kilowatt bases. The three bases are Lianyungang and northern Yancheng, including 2.57 million kilowatts. The million-kilowatt base in southern Yancheng is 540 kilowatts, and the Nantong base is 4.58 million kilowatts.

 

This is the Rudong intertidal zone experimental wind farm that has been built in Jiangsu Province. This wind farm was built in November 2009 with 320,000 MW. The wind farm includes 8 wind turbine manufacturers, including 9 types of wind turbine manufacturers, including United Power, Guangdong Mingyang, Envision Energy, Sany Electric, Shanghai Electric, Chongqing Haizhuang, Goldwind Technology, and Sinovel, with a single-machine energy from 1.5 MW to 3 MW. The form of foundation includes low pile cap, 5 pile jacket, 6 pile jacket, 7 pile jacket, single pile foundation and so on.

 

These are several major wind areas for the expansion of the test wind farm, including the first large-capacity offshore wind power jacket foundation in China, which is a 5 MW wind turbine installed in the sea, using 6-piled jackets, each steel pipe diameter of 1.5 meters, and a It is the first large-capacity offshore wind-level monopile foundation, using a 4 megawatt wind turbine in the vision, and its monopile diameter is 4.5 meters to 5.6 meters.

 

This is the test wind level of the experimental wind field in Xiangshui Sea, Jiangsu Province. It was in 2009. This was done as a test project in conjunction with the scientific research plan of the 11th Five-Year Plan of the Ministry of Science and Technology. This fan is based on high pile caps. The project has completed a large number of field experiments, including the progress test of the installation, the foundation vibration of the fan, the deformation of the structural system, and the detection of the state. A large number of first-hand data have been established.

 

This is a photo of the construction site of this project, which is also hoisted by a semi-shallow wind body. This is a 150-megawatt offshore demonstration project built in Rudong. It uses 17 Sinovel 3MW, 21 Siemens and 20 Goldwind.

 

The following is an introduction to the CGN Rudong Offshore Wind Power Plant. This project uses 38 sets of 4 MW wind turbines, with a total installed capacity of 152 MW, and most of the water depth is about 15 meters. Geological conditions The surface layer is mud and clay, and the lower part is silty soil. The technical form adopts a monopile structure with a diameter of 5.8 to 6.7 meters. The local machine position is not a transition section, but the transition section adopts two methods of grouting and connection. A 110-sea booster station is used, the dynamic investment is 2.845 billion yuan, the unit kilowatt is 18,700 yuan, and the electricity price is 0.85 yuan. This project has completed the bidding of wind turbines last year, which is 4 MW of Siemens. The trial installation experiment was completed last year, and the construction is expected to start in the second half of this year. Next year, the first batch of units will generate electricity, and the project will generate all electricity in 2016.

 

This is the schematic diagram of the project, this is the wind turbine part, the submarine cable of the offshore wind power booster station, 28 kilometers offshore. The project has several characteristics. Seabed erosion and stasis in the site area are actively evolving, which poses new challenges to the protection of submarine cables and the erosion of foundations.

 

Second, the monopile structure used in the foundation and booster station has a capacity of 4MW and the water depth is 15 meters. Below 15 meters, there are 12 to 30 meters of silt layer, which is also relatively soft. In this case, the difficulty of a single pile is also relatively high. The implementation of the project will greatly enhance the capability of domestic offshore wind power foundation design and construction. This project is the first to carry out serial load and load optimization work with European wind turbine manufacturers, which also puts forward new requirements for our domestic wind measurement and marine hydrology observations. Because some standards are different, European and domestic ones need to be run-in and integrated now. It may also put forward new requirements for some foreign fan manufacturers to adapt to China's specific market environment conditions in the future. If this project is fully put into operation in 16 years, it will become the first domestic project with an offshore booster station and long-distance submarine cable transmission. This is a field trial of the project.

 

Let's introduce the Xiangshui Offshore Project in Jiangsu Province. The project is located in Xiangshui County, Jiangsu Province, with a distance of 4 kilometers offshore and a water depth of 6-12 meters. According to 67 sets of fans with a single energy of 3 megawatts, the total installed capacity is 200,000 kilowatts. The project also used a 2.0-sea booster station and a 12-kilometer submarine cable. The project was approved in June last year, and is also actively preparing for construction this year, and is expected to start construction in the second half of the year. This is the offshore booster station of the project, which adopts an integrally installed offshore booster station, and the preliminary design has been completed.

 

Let's introduce the 200,000 yuan expansion of Longyuan Rudong. The project is 200,000 yuan, using 50 4MW wind turbines, and the maximum water depth reaches 16 meters. This project is a combination of near intertidal zone and offshore. The project has started in the first half of this year, and now the hoisting of the two units has been completed, and it is expected that all of them will be completed and put into operation by the end of next year. This is the project using 25 Vision 4MW and 25 Siemens 4MW wind turbines. The foundation used is a new monopile foundation without filter section and a large jacket. Among them, there are a total of 36 monopile foundations and 14 jacket foundations.

 

This is also the two projects of Longyuan Gale with 200,000 yuan. This is the first phase of the project, and this is the second phase of the project. Two projects used a 220 booster station, which was concentrated here and sent to shore. This distance is about 30 kilometers. The Gale Booster Station adopts a modular structure. Each module is installed and debugged on land, and each module is connected on site under 500 tons. Why use modules? Because the water depth of this factory area is relatively shallow in some places. Large construction ships cannot go in, so they are modular. A living platform is set up next to the booster station, which is used for the life of the operation and maintenance personnel during the operation period. In terms of offshore booster stations, a lot of research has been done on equipment reliability and durability, ventilation, heat dissipation, including platform fire protection, including platform structure, overall structure manufacturing and installation, and has been applied to our The project also adopts a micro-pressurized ventilation system and a water-absorbing mist system.

 

Combined with the practice of several offshore wind power projects in Jiangsu and Zhejiang, according to different environmental conditions such as water depth, ocean currents, and geology, the overall and modular offshore wind power station layout has been studied and obtained a number of patents. In the State Grid Corporation of China, the Ministry of Science and Technology, etc., conducted research on electrical reliability, mechanical reliability, economy, dynamic reactive power compensation, equipment status monitoring, and smart grid. For the structural characteristics of the high-voltage submarine cable, the current carrying capacity of the landing section, the sea piles, etc., combined with the special topography of Jiangsu Province, and the current situation that the water depth varies greatly, the underwater construction measures, as well as the selection and radiation of submarine cables, etc. are studied. .

 

The third part introduces the planning of offshore wind power projects in Zhejiang Province.

 

We have set up more than a dozen offshore wind towers in the waters of Zhejiang Province. According to this situation, the height of 100 meters is generally 7.2 meters in the Hangzhou Bay area to 7.8 meters in Mimibo, and about 7.6 meters in Taizhou. At present, the Zhejiang Shengputuo No. 6 offshore wind power project has been approved. This is the layout of Putuo No. 6. Outside Putuo Island, this is the sea booster station, and the 11-kilometer submarine cable goes ashore. This is his location. This project uses 62 sets of 4 MW wind power generators, arranged in 2 sets, with a row spacing of 2.5 kilometers. The substation is 11 kilometers offshore and the water depth is 12 to 16 meters. The mud layer is covered deeply, because the foundation of the wind turbine adopts the high pile cap foundation with high rigidity. The offshore booster station adopts the foundation of 4-leg jacket erection. Supporting the construction of 220 offshore booster stations. The feasibility study of this project was carried out in 2011, the road was obtained in 2012, and it was approved at the end of 2013. Construction has already started in the second half of this year.

 

This is the No. 1 offshore wind power plant in Jiaxing, Zhejiang. I measured it in the waters of Pinghu, Jiaxing City, in Hangzhou Bay, with an installed capacity of 30 megawatts. At present, the project has completed all the work before the project pre-development according to the requirements of the Provincial Energy Bureau, and passed the acceptance. Feasibility studies and related work for project approval have been carried out. The project is located in Hangzhou Bay, and the marine hydrological conditions are complex, especially the tidal flow velocity is large, because it is a bell mouth of Hangzhou Bay, and the flow velocity of the tidal current is very large. This is a topic to be researched by a project. Install 60 wind turbines of 5 MW and set up 220 booster stations offshore. The total construction period is 40 months. It is planned to be approved and started in 2015, and it will be fully put into production in 2018.

 

My introduction is over, thank you.