The height of the wind turbine generally refers to the vertical distance between the fan axis line and the ground. The height of a wind turbine has an important effect on its power generation efficiency and stability. Here are some facts about the height of wind turbines: First of all, the height of the wind turbine is usually about 80 meters to 160 meters. With the continuous progress of technology, the height of some new wind turbines can even reach more than 200 meters. The higher the height of the fan, in general, the greater the power generated. Secondly, the height selection of wind turbines is affected by a variety of factors. One of the main factors is the wind speed at ground level. In general, the lower the wind speed at the ground level, the higher the fan needs to be in order to obtain a larger wind energy resource. In addition, it is also necessary to consider many factors such as terrain, climate conditions, and the surrounding environment. In addition, with the development of wind power generation technology, the fan lifting system is also constantly improving. By increasing the height of the tower, increasing the length of the blade and improving the blade design, the height of the fan is increased, and the power generation efficiency is improved. In addition, the height of the wind turbine will also have a certain impact on the surrounding environment and ecosystem. Therefore, when choosing the height of the fan, it is also necessary to carry out a careful environmental impact assessment and ecological protection measures. In general, the height of wind turbines is a complex system engineering problem that requires comprehensive consideration of many factors. With the continuous progress and innovation of technology, it is believed that the height of wind turbines will continue to increase in the future and make greater contributions to the development of clean energy.

Firstly，How to choose a household wind turbine. Household wind turbines are devices that can generate electricity by utilizing wind energy. When choosing a home wind turbine, the following factors need to be considered : 1.Economic cost: The purchase and installation costs of household wind turbines need to be considered, generally not suitable for households with low electricity consumption. 2.Geographical environment: Household wind turbines need to be placed in sufficiently spacious and exposed areas to the wind, and it doesn't cause noise pollution to neighbors. 3.Daily electricity demand: When choosing a domestic wind turbine, it is necessary to consider the daily electricity demand of the household and the resulting electricity consumption. Secondly，Wattage requirements for household wind turbines Different households have different needs for electricity. Generally speaking, household wind turbines below 2000 watts can meet the daily electricity needs of most households. But if there are many household appliances used or if high-power appliances are frequently needed, then you need to consider buying more powerful household wind turbines. When considering the wattage demand of household wind turbines, we also need to pay attention to the following aspects: 1.Wind energy source: The output power of wind turbines is directly related to wind speed,The appropriate equipment needs to be selected according to the full degree of wind energy in the location. 2.Time: Wind energy has a time limit,so when choosing a household wind turbine,It is necessary to consider the average wind speed and household electricity time in the location to consider how much power to buy wind turbines. 3.Seasonal variation: Seasonal variations can also affect the output of wind turbines. To sum up，The wattage demand of household wind turbines is related to various factorssuch as the actual electricity demand of the household and the wind energy adequacy of the location.But what specific power of household wind turbines do you need to purchase,It also needs to be considered in light of the actual situation.

Wind energy and solar energy as pure renewable green energy, more and more people pay attention to, the complementarities of the two in time and region make the wind-solar complementary power generation system has a good match in resources, wind-solar complementary power generation system is an independent power system with good resource conditions, and wind-solar complementary street light is a significant application of wind-solar complementary power generation system. The wind-solar complementary street light system is to change the grid power supply of traditional street lights into a wind-solar complementary power generation system that converts wind and solar energy into electricity. The system structure block diagram is shown in the figure. The system consists of wind generator set, solar photovoltaic array, rectifier circuit, voltage regulator circuit, unloader and energy-saving street lamp.The overall working principle of the system is as follows: the three-phase AC from the wind generator set is rectified after the DC and the DC from the photovoltaic array is charged after the voltage regulation circuit, and the battery supplies power to energy-saving street lights. From the perspective of power generation and consumption, the system mainly consists of four parts: power generation, power transformation control, power storage and power consumption. The power transfer is shown in the figure.
With the continuous improvement of China's road traffic network, some remote areas have also built roads, but the use of ordinary street lights in these areas requires the laying of special lines, which will consume a lot of manpower and material resources, so the characteristics of independent power supply of wind and solar complementary street lights are very suitable for use in these areas. The power supply of mobile communication base stations, the electricity consumption of remote mountain villages and the electricity consumption of border posts can all be solved by wind-solar complementary power generation technology, so the study of wind-solar complementary street lamps has wide significance.