Recently, keywords such as "grandfather", green train, diesel locomotive, high-speed rail lie nest have been widely discussed on the Internet, recently, Hunan, Hubei and other places suddenly encountered freezing rain and blizzard weather, and many trains were delayed or suspended because of such bad weather. Many netizens on the Internet posted that there are "sparks with lightning" special effects in the front of the train, so will this have any impact on the operation of our train?
There are also some netizens who took such a picture on the stalled high-speed rail train, that is, in such a bad ic, snow and freezing rain weather, there are green trains speeding by, and the momentum of the green trains speeding by is directly full, in addition, some netizens photographed the picture of the diesel locomotive pulling the high-speed rail in the ice and snow weather, and many netizens have jokingly called the "grandfather" of the train. So in such a bad snow, ice and freezing rain weather, does the green train have more advantages than the high-speed rail that relies on power output? Why don't the green-skinned diesel locomotives shoot the icy, snowy and freezing rain?
First of all, let's analyze the difference between diesel locomotives and high-speed rail. The green train, which is the general speed train we know, refers to the appearance of the dark green train, the running speed of the general speed train varies depending on the model, and the traction mode of the general speed train is mainly divided into two types, namely electric locomotive and diesel locomotive.
The high-speed rail train runs entirely on electricity, and the advantage of the high-speed rail train is that it is fast, and it runs on electricity, so it is relatively environmentally friendly. However, in the case of bad weather such as ice, snow and freezing rain, the freezing rain covered the railway catenary line with a thick layer of ice shell, which led to the contact between the catenary line and the top pantograph of the high-speed rail or the electric general-speed train caused insulation, which led to the spark effect, that is, the picture of "lightning with sparks" taken by netizens, this phenomenon is called arc, which will damage the power catenary of the railway and the pantograph on the train, and even affect the normal operation of the train if it is more serious.
Therefore, in the event of severe weather such as ice, snow and freezing rain, not only the high-speed rail will be affected, but also the general-speed green train that runs on the power output will also be affected. When the operation of high-speed rail is blocked in ice, snow and freezing rain, it is also possible to use the diesel locomotive as a temporary power**, for example, in the case of power failure, there is also a way to pull the train back to the station or maintenance place, so the power mode of high-speed rail using diesel locomotive must still exist. However, the use of diesel locomotive traction cannot reach the normal operating speed of high-speed rail.
The last question is why the train pulled by the diesel locomotive is not afraid of the bad weather of ice, snow and freezing rain, because the diesel locomotive uses the internal combustion engine as the driving force and drives the wheels through the transmission device, and does not rely on the power output of the power grid, and is relatively less affected by the ice and snow freezing rain during operation. At the same time, compared with the power system of high-speed rail, the structure of diesel locomotives is simpler, and it is easier to maintain and repair. Diesel locomotives have shown advantages when operating in difficult terrain and areas where power grids are not easily laid, for example, in the Qinghai-Tibet railway, because trains pulled by diesel locomotives run more reliably at high altitudes and in uninhabited areas.
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