(1) First, the dominant wind direction should be determined based on the prevailing wind direction, annual average wind speed and other conditions shown in the wind farm's wind direction rose diagram and wind energy density rose diagram. Wind turbines should be arranged perpendicular to the prevailing wind direction. For flat and open sites, wind turbines can be arranged in single row, double row or multi-row types. Multiple rows should be arranged in a "plum blossom" shape to minimize the impact of wakes between wind turbines.
(2) Calculations of various layout plans show that when the average wind speed of the wind farm is 6.0~7.0m/s, the row distance of single-row wind turbines is approximately 3D (D is the diameter of the wind turbine); The row spacing of the column layout is about 6D, and the column spacing is about 4.5D; the row spacing of the multi-column layout is about 7D. The greater the average wind speed in a wind farm, the smaller the spacing between wind turbines.
(3) Under complex terrain conditions, wind turbines must be positioned with special caution, and the design is also difficult. Generally, they should be selected on ridges facing the wind on all sides, or they can be arranged on windward slopes. At the same time, attention must be paid to Turbulence conditions that may exist under complex terrain conditions.
(4) Natural wind, after passing through the wind turbine runner, converts part of the kinetic energy into mechanical energy. The wind speed in the wake area is reduced by about 1/3, and the wake flow pattern is also disturbed, especially The blade tip has the greatest disturbance, so there should be a gap of more than 5D between the front and rear wind turbines. The surrounding free air can supplement the kinetic energy absorbed by the front wind turbines and restore a uniform flow field. In other words, if the wind turbine in the front row is an obstacle in the rear row, WAsP software or other methods can be used to calculate the mutual influence of wakes between wind turbines and optimize the layout plan.
(5) The optimal layout plan of wind turbines needs to be determined through economic comparison of multiple plans.
The fragrance of life will always leave a lingering fragrance when flowers fade and bloom; birds flying around will always leave footprints; books will always leave memories when they are opened and closed; time passes year by year. In the new year, how should we draw a wonderful and colorful life at this moment? The sky is more than blue, the clouds are more than white, the grass is more than green, and the flowers are more than colorful! Everyone who brings a perfect ending to his life must pay the price! "Some people are dead, but they are still alive; some people are still alive, but they are already dead!" Life is like this. How can a chrysalis spread its wings and fly in the sky without experiencing the pain of breaking out of its cocoon? How can the grass straighten up and look up at the earth without experiencing the pain of breaking the ground? How can a pencil write beautiful words without going through the difficulty of sharpening it? This reminds me of our Uncle Lei Feng. He is a servant of the people, a close friend of the children, and a model squad leader of the whole regiment. Returning to the station, regardless of the fatigue of the long drive, he was unfortunately hit in the head by a falling pole from Fang Lin while turning. Just like that, Uncle Lei Feng, who was only 22 years old, said goodbye to us forever! Didn't he bring a perfect end to his life? And our Edison. Lamp is a great invention for mankind to conquer the night. Before the 19th century, people used oil lamps, candles, etc. for lighting. Although this had broken through the night, it still could not completely free mankind from the restrictions of the night.Let it out. Therefore, Edison was particularly interested in electrical appliances. Since Faraday invented the motor, he was determined to create electric lights and bring light to mankind. He conducted experiments in two aspects: one was to classify and test more than 1,600 different heat-resistant materials; the other was to improve the evacuation equipment to make the bulb have a high vacuum. He also conducted research on new generators and circuit branching systems. He tested more than 1,600 heat-resistant luminescent materials one by one. Only platinum wire has good performance. However, platinum is extremely expensive and a more suitable material must be found to replace it. In 1879, after several experiments, Edison finally decided to use carbon filament as the filament. He sprinkled a piece of cotton silk with charcoal powder, bent it into a horseshoe shape, put it in a crucible, heated it, made it into a filament, put it in a light bulb, and then used an air extractor to remove the air from the light bulb. The light turned on and could be used continuously. 45 hours. In this way, the world's first carbon filament incandescent lamps came out. On New Year's Eve 1879, Lopack Street, where the Edison Electric Light Company was located, was brightly lit. He succeeded! ! ! He also left a lasting legacy in his life! Let us pursue a perfect life and leave our own footprints!