In recent years, the wind power industry has developed rapidly in China. On the one hand, wind farms are blindly built. On the other hand, due to the unsmooth transmission of power, there are widespread phenomena of abandoned wind and electricity. This phenomenon mainly occurs in the northeast, northwest and north China where wind resources are concentrated. How can the wind power industry get out of this dead end? "The relationship between the power supply and the power grid is like the relationship between the car and the road. If the road is not repaired well, it will cause 'congestion'." Zheng Taiyi, head of the dispatching communications center of Jilin Electric Power Co., Ltd., said that the wind power station in Jilin Province is located in a wide area. Lean, weak power grid, the maximum load is only about 900,000 kilowatts, and the current installed capacity of wind power is close to 2 million kilowatts, when the wind power is large, transmission lines often close to full load, had to take measures to abandon wind.
Disadvantages are unfortunate, but the main reason behind this is blind construction. Zhang Zhengling, spokesperson of the State Grid, said that the seriousness of the northeastern abandonment of wind is caused by the large-scale development of wind power to cause overcapacity. For example, the volume of Jilin wind power development does not match its own economic volume. Because the local thermal power units are mostly combined heat and power, When the winter heating, the minimum load of the thermal power unit can only be reduced to 90%, and wind power can only make concessions.
As China's wind power-rich region is far from the power load center, and the rate of increase in power generated by economic development speed is difficult to quickly increase in a short period of time, some people in the industry have proposed that we should speed up the use of ventilation and export channels to increase smart grid construction. Solve problems such as wind blowing. In addition, wind power planning should avoid blind expansion and fully consider the patency of power transmission channels.
Experts pointed out that the development of wind power can not only look at wind resources, must take into account the consumption and transmission costs of the power grid. China's wind power development plan focuses on resource planning and lacks specific plans for wind power transmission and wind power consumption. Relevant state departments should study the subsidy policy, direct more wind power investment to the correct and efficient places, and guide areas that can be connected to the network and can be eliminated, and solve grid connection problems at the source.
The so-called mini projector is also called pico projector, TRT-Lcos Portable Projector. Mainly through the 3M LCOS RGB three-color projector and 720P film decoding technology, the traditional huge projector is refined, portable, miniaturized, entertaining and practical, making the projection technology closer to life and entertainment.
Usually the projector has certain regulations on 2 aspects:
a). Size: Usually the size is the size of a mobile phone.
b). Battery life: It is required to have at least 1-2 hours or more of battery life when it is not connected to power.
In addition, its general weight will not exceed 0.2Kg, and some do not even need fan cooling or ultra-small silent fan cooling. It can be carried with you (it can be put into your pocket), and the screen can be projected to 40-50 inches or more.
Advantage:
1. Completely replace the MP5 player, video, listening to songs, playing games, e-books, picture browsing, etc. MP5 video is affected by physical performance, the screen can not be bigger, and the screen of this thing is at least 20 inches.
2. Instead of the TV function, the machine can have a built-in CMMB function, or it can be directly connected to the set-top box to play the TV, and it can be used as a 21-inch TV during the day.
Look, it can be used as a 60-100-inch TV at night to achieve the effect of home theater; it is convenient to move and break through the traditional film and television space. Even if you are on the mountain, you can also share today's TV series, movies, and MTV with your lover.
3. Business office: instead of large projectors, it is used for company meetings; the price of large projectors is 4,000 to 14,000, and the lamp life is more than 1,000 hours, which is not convenient to carry. 30,000 hours, no need to change the bulb for 3 years, easy to carry, the salesman only needs to bring a micro projector to demonstrate the new product, which can achieve the demonstration effect.
4. Teaching: training meetings, classroom teaching; traditional projectors are not easy to carry. In school classrooms, due to the naughty students, projectors are not safe to place in the classroom and are easily damaged by students. The portability of micro projectors makes up for the teaching vacancies. In the future, teachers only need to store the materials in the projector and show them to students for teaching, saving the trouble of textbooks and handwriting with pens and chalks.
In addition, the micro-projection has no radiation, which can fully protect pregnant women and people with myopia. Its low power consumption function is 1/1,000,000 of the power consumption of color TVs. One day of electricity has completely impacted the indicators of safety, environmental protection, health, etc., and has made amazing contributions to future social development, standing at the peak of the green world as a leader.
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