Wind power is a typical representative of green energy, but in China, but never a “green energy” quickly evolved into a near “junk energy”, from a technical point of view a large-scale wind power and network technology can not meet the actual needs is the key reason. However, with the world’s scientists and technical personnel in this area, efforts to explore large-scale wind power has matured technically, as long as the cost of investment income and other economic problems are resolved, wind turbine generators bid farewell to “junk energy” of the times to be far away.
In China, can make use of wind power density over 200 W / m “high-energy” area are concentrated in the northern Inner Mongolia, northern Xinjiang, Heilongjiang, eastern, north-central Tibet, and the individual regions along the coast. This directly led to the million-kilowatt wind farm will appear, and on this scale wind farm in Europe and other places is very rare.

A large-scale wind farm to the negative impact of wind generators system increasingly evident, due to intermittent wind power and other reasons, leading to wind farms to the power grid harmonic pollution, voltage fluctuations and flicker problems. In addition, the random nature of widmill power generation and also the development of operating plans to bring many difficulties. In addition to random variation of the natural properties of the wind, the fan itself and the regulatory function of the grid is also lagging behind the needs of practical applications.

The classic example of practical application are: the wind and the grid load hours, wind power transmission grid frequency does not go out will lead to more than 50 Hz, if the dispatching lack of capacity, it can only be cut out of wind, fans should an emergency brake, due to inertia , gear box, transmission, brakes, leaves, etc. will be a huge impact load. The Wind mini-grid load is heavy, wind power generating enough power grid frequency below 50 Hz, the net pressure becomes very low, such as weak will be dispatching a large area power outage.

From a technical point of view, you can present the shortcomings of windmill  power roughly divided into three areas, which is the key breakthroughs in scientific research and technical personnel areas: energy storage technologies, wind forecasting techniques and power electronics applications, from the fans themselves, wind systems, and wind weather forecast levels of wind power grid to solve the problem.

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