Although our country has insufficient experience in fields such as chips and aircraft engines, it will be choked by foreign countries. But in the field of ultra-high voltage transmission , my country has technology that is unique in the world.
First of all, what is UHV?
UHV is a type of voltage. Voltage can be understood as electrical pressure. According to regulations, voltage can be divided into four levels: low, high, ultra-high, and UHV.
Although there are only 4 levels literally, these 4 levels have stumped most countries in the world. The difficulty with UHV technology lies in the ultra-strong voltage of UHV.
makes a simple analogy. Voltage is similar to water pressure. From a technical point of view, it is easy for us to make the voltage very high, but the difficulty is that voltage also has pressure. When the voltage reaches a certain level, extremely dangerous things will happen. phenomenon, that is discharge! For example, in thunderstorms and lightning in the air, we all know that air is non-conductive, but in thunderstorms, when the voltage in the clouds is strong enough, lightning will form throughout the sky.
In fact, not only lightning, when the voltage reaches a certain level, all originally insulating objects will become conductive objects. High-voltage electricity is very dangerous if it is released outside.
Therefore, the difficulty in UHV power transmission is to build a safe container to store or "transmit" these UHV electricity.
It is not easy to conduct electricity, that is, the material with the best insulation performance is ceramic. An ordinary piece of ceramic can isolate a current of 50kV. However, the minimum UHV current is 800kV DC voltage , or 1150kV AC voltage. These two voltages are far outside the insulation range of ceramics.
The American solution to this problem is to create ceramics with better performance. As a result, with the help of American engineers, it was actually made. However, the weight of this equipment is 7000 tons+.
How much does 7000 tons weigh? 1 elephant = 10 tons, 7,000 tons is equivalent to 700 elephants. Moreover, elephants are not easy to transport? How to transport 700 elephants at one time?
Therefore, although the Americans developed a transformer that could withstand ultra-high voltage, they gave up because they had no way to transport it. Therefore, many places in the United States now use the previous generation of power grid technology. Although there are power losses, the power grid is old, and various places are not interconnected, at least it can be used and can last for a long time.
However, although the United States can use ultra-high voltage, China cannot. China needs ultra-high voltage power transmission. Because China has its own special conditions. For example, the distribution of resources in our country is uneven. Take electricity as an example: the coal required for thermal power generation is mostly located in Shanxi, Shanxi, and Inner Mongolia; the rapid rivers for hydropower generation are mostly located in Southwest China; the 16 central and eastern provinces that account for 70% of the country's electricity consumption do not have abundant power resources themselves.
These resources are mines and large rivers cannot be moved away. To transport the electricity across more than half of China to the central and eastern provinces, a high enough voltage is needed. Because the distance is thousands of miles, if the voltage is not enough, the electricity cannot be sent at all. Therefore, UHV power transmission is imperative.
And we have to study the ceramic transformer made by the Americans, which is a big problem, because one transformer alone weighs more than 7,000 tons, and the United States itself has no use for this thing. Moreover, if we want to use such a thing, we will need more than 1,000 of them, which is definitely a big problem.
For this reason, after exploration, our country has developed paper insulators. Although this kind of paper is paper, it is not ordinary paper, but paper that can isolate ultra-high voltage. How awesome is this paper? It reduces the weight of the transformer dozens of times, from 7,000 tons to 500 tons. It is not an exaggeration to say that it is a creation of heaven.
Moreover, paper can be made into this shape and made into various required parts and components, but ceramics cannot achieve this effect. It is said that there are 250,000 pieces of various paper parts in the UHV equipment, and the precision is far beyond that of handicrafts. Of course, what exactly this paper is and how it is made is a secret and I don’t know.
This special insulating paper is a unique technology of our country. Although the United States has strong scientific research strength, in this regard, our country's basic research is obviously superior. Our country is not lagging behind in all basic science fields, and we also have our own pride.
In addition to the special insulating paper, we also spent a lot of effort to transport the 500 tons of equipment. After all, 500 tons of stuff cannot be dismantled and can only be transported in its entirety. This equipment is transported by a domestically produced transport vehicle in my country. This is a unique transport vehicle in my country because this vehicle is 85 meters long and has 256 wheels. With this kind of transportation equipment, you can transport 500 tons of things without any stress. Moreover, this kind of car is unique to our country and is only available for rent but not for sale.
Of course, the transportation process is not smooth. Before transportation, you need to plan the route in advance, such as the load-bearing capacity, width, etc. of bridges and roads. Wherever it can be circumvented, it should be circumvented; where it cannot be circumvented, it should be widened and strengthened.
Finally, after the UHV equipment is delivered, high-voltage lines can be erected.
Many people will ask, why do we need UHV?
Actually, what we do is not UHV, but a promise. A promise to provide every village with access to electricity, so that every Chinese can live a good life and live a modern life. The country is rich and the people are strong, and the people are rich and the country is strong. The two are complementary to each other.
What we do is not UHV, but a commitment to people. Similarly, as long as people are willing to do it, what can't be done? The two are essentially the same thing.
In addition, our construction of ultra-high voltage power lines has not only completed the goal of sending electricity from the west to the east, but also promoted the development of the west, developed its resources, and strengthened the connection between the east and the west. If the Belt and Road Initiative wants to export electricity, it will also have to rely on UHV technology.
When China's power technology slowly becomes the world's standard and is used by all countries, it can be said that the country will be truly prosperous and the people will be strong.
