Change the direction of the wind and destroy the dragon's veins.
1. As the old saying goes: clouds follow the dragon and wind follows the tiger. Wind power generation is a way to change the direction of the wind in the dragon's veins.
2. A wind power station is designed between the top of the mountain, and the iron nails of each motor must be driven down at least 100 meters. It can also be said that you can clearly see the progress of the dragon vein by looking for the location of the wind power station.
Where does Weihui Windmill generate electricity?
The wind turbine looks like a large windmill, it is silver gray. Each of these large windmills is about forty or fifty meters high, and it would take five or six people to hug them together. On top of the wind turbine is a rotating impeller with three blades. The impeller does not rotate very fast, and even if it rotates, the three blades can be seen clearly. The center of the impeller is the generator, and the wind turbine is wrapped inside, so we can't see it. When we looked, there were almost no large windmills that were not spinning. Even though the wind was very light, they were still spinning. When the windmill rotates, the whole windmill makes a sound. Listening next to the big windmill, my ears were almost numb.
What is the power of a large wind turbine?
On May 20, the Weihuidong Shuanma 48 MW wind farm in Xinxiang, Henan, built by Hebei Engineering Company, was connected to the grid.
Henan Xinxiang Weihui East Shuanma Wind Farm Project is located in Weihui City, Xinxiang, Henan Province, bordering the northern part of the Yellow River to the south and Taihang to the west. The total installed capacity of the project is 48 MW, with a new 110 kV booster station and a supporting 110 kV transmission line. Hebei Engineering Company undertakes construction projects such as road civil construction in wind farms, construction and installation projects of wind power generators and box transformers, and construction and installation of 35 kV collector lines.
Since the project started on May 1, 2017, the project department has scientifically organized and carefully deployed, taking construction technical specifications and measures as the starting point, and implemented safety and quality at every step. We rationally deployed personnel and machinery and went all out to complete various tasks, overcoming the impact of the protection of the ancient Great Wall ruins, successfully completing the construction tasks, and successfully realizing the owner's node plan.
The wind turbine foundation pouring was completed on October 31, 2018, the collector line construction was completed on December 31, 2018, the wind turbine hoisting was completed on January 26, 2019, and the production acceptance was passed on May 14, 2019. On May 19, 2019, the two collector lines and all box-type transformers were successfully connected to the grid for power generation, and the first unit was connected to the grid for power generation. The employees continued their efforts and achieved the goal of all units for grid connection and power generation on May 20.
Liangshan: Why are there a few small black spots? Behind the "dragon swinging tail" of the big windmill
The largest one is 5MW, one in Denmark and one in China. Generally, 2MW, 1.5MW, or smaller 0.8MW are used in China.
Electrical power calculation formula: P=W/t =UI.
In a purely resistive circuit, according to Ohm's law U=IR and substituted into P=UI, we can also get: P=I2R=(U2)/R.
In Dynamics:Power calculation formula: P=W/t (average power); P=FV; P=Fvcosα (instantaneous power).
Extended information
When the wind turbine generates electricity, it must ensure that the output frequency is constant. This is very necessary for both wind turbine grid-connected power generation and wind-solar hybrid power generation. ?
To ensure that the frequency of wind power is constant, one way is to ensure a constant speed of the generator, that is, a constant speed and constant frequency operation mode. Because the generator is driven by the wind turbine through the transmission device, this This method undoubtedly requires constant speed of the wind turbine, which will affect the conversion efficiency of wind energy.
Another way is to change the generator speed with the wind speed and ensure the frequency of the output electric energy to be constant through other means, that is, variable speed constant frequency operation. The wind energy utilization coefficient of the wind turbine is related to the blade tip speed ratio (the ratio of the linear speed of the impeller tip to the wind speed). There is a certain blade tip speed ratio that makes Cp reach the maximum value.
Baidu Encyclopedia - Wind Turbine
Not long ago, a video of a giant wind turbine blade bending over a cliff went viral. Netizens called it a "dragon wagging its tail" and said "I dare not breathe". "At first glance I thought it was an animation special effect!" The "little black dot" of "wave step"? who are they? What to do? At noon on March 5, the main station's integrated media program "Two Sessions You, Me and Him" was launched again. In the program, Zhuang Shengchun of CCTV News "Relativity" found one of the "little black spots".
Luo Tao, the person in charge of the Sichuan Jinyang Wind Power Project in 2021. He recalled that when transporting wind turbine blades from Xichang to the construction site, almost all of them were mountain roads, steep cliffs, and hundreds of bends. "At first, the driver said that no matter how much money he was given, he was not willing to do it." What should I do? Enter the person in charge. The CEO of the transportation company drove the car, and Luo Tao and his colleagues followed the car to look after and direct him. The road was not wide enough, so the workers hung safety ropes to dig.
From October to November, landslides often occur in the mountains, and Luo Tao is so stressed that he often wakes up from nightmares. In fact, the "silky smooth" cornering we saw in the video was accelerated by about 10 times, and it was after multiple transportations. The actual situation of transportation is that it can only cover four or five kilometers in most of the day, and it takes half a month to go there. "Fortunately, we can still return to the project department. At least we have a bed. The drivers have food and accommodation in the car," Luo Tao said.
Constructed in the same year, completed in the same year. Today, Luo Tao and some colleagues are still at the Jinyang Wind Farm with an average altitude of 3,500 meters, responsible for daily maintenance. He once took his daughter to see the big windmills here, the blue sky, green grass, and herds of cattle and sheep. "But I didn't dare to take her to see the road we walked."