The speed of the high-speed rail reaches 350 kilometers per hour. How to supply power while driving? What happens if the power fails suddenly during the high-speed rail operation?
In order to promote the construction of domestic transportation infrastructure, Chinese engineers have built the high-speed rail system with the longest operating mileage in the world, with a total mileage of 40,000 kilometers. Due to the advanced technology, China's high-speed rail operates at a speed of 350 kilometers per hour, so many People may have a question: how does it supply power during operation? Is it carrying a battery to power it?
The picture is the high-speed rail
In fact, it is provided by a special power supply network. The Chinese approach impresses foreigners, so how much electricity does it consume per hour? The answer is 9600 degrees per hour, which is equivalent to consuming the electricity used by a family for four or five years. The role played by the power supply network cannot be underestimated. China's high-speed rail refers to the high-speed railway built and used in China. transport infrastructure.
The picture is the high-speed rail
The electricity used by the high-speed rail is not carried by the high-speed rail itself. When we take the high-speed rail, we will all see that there is a power supply on the top of the high-speed rail carriage. There are many dense routes on the high-speed rail, that is, the high-speed rail receives electricity. The bow rubs against the wire to supply power to the high-speed train. The pantograph is an electrical device that obtains electrical energy from the catenary of the electric traction locomotive. It is installed on the roof of the locomotive or motor train. Once the wire is not touched, the entire high-speed rail will be powered off, and it may also be brought It is a safety hazard, so why does the wire and the pantograph often contact and rub against each other and not break?
The picture shows the high-speed rail
The material of this kind of wire is very wear-resistant, and the friction time with the wire is not long. Although the pantograph is rubbing at any time, in order to avoid loss, the part where the pantograph and the contact net are in contact with each other (skateboard) must be Made of high hardness wear-resistant and conductive material. So the material of this wire is very durable.
The picture is the high-speed rail
The pantograph is always being worn out. The pantograph is rubbing against the wire parallel to the direction in which the wire extends. However, the wire will become finer and thinner, but it will not break suddenly. Therefore, when using wear-resistant materials , a wire can also be used for a long time.
The picture is the high-speed rail
The friction of each wire is very short, and the pantograph is always rubbing to protect the pantograph. The first is the material problem. The high-speed rail pantograph is made of a smooth and wear-resistant graphite plate. Considering the graphite It has good electrical conductivity and good lubrication performance, and each graphite plate will have a certain thickness, so as to ensure that the pantograph will last longer, but it will also be regularly checked and replaced.
For better uniform friction, the wires are not straight and parallel to the railway, because it prevents the situation that one side has been worn out during the friction process, and the other parts have not been ground, so the wires and pantographs of the high-speed rail are not as we imagined. It's that simple.
The picture shows the high-speed rail
In order to operate more safely, there will be no trains for the high-speed rail in the early morning, because they will have professionals to overhaul it during this time. The high-speed rail runs very fast, and accidents may occur if there is a problem, so it runs every day After the completion, there will be professionals to overhaul, and the first high-speed rail every day does not carry passengers. The purpose is to detect whether there is a fault with the high-speed rail and the railway. Once a problem is found, it will be dealt with in time to ensure travel safety.