The Liujiaxia Hydropower Plant, located in Yongjing County, Gansu Province, on the upper reaches of the Yellow River, is the first million-kilowatt-class large-scale hydropower station in China that is completely designed, manufactured, installed and commissioned by itself, creating a precedent for China to radically control the water damage of the Yellow River and develop the Yellow River water conservancy.
In such a million-kilowatt-level large-scale hydropower plant, what is it like to be a doctor for the "heart" of a power plant weighing hundreds of tons? Recently, the reporter followed Diao Guofeng, the "second generation of the factory" who has worked here for more than 30 years, into the "heart" of the hydropower plant. Diao Guofeng said that for hydropower plants, the generator set is the core of the core, and in the face of such a behemoth, there are thousands of tasks when "consultation".
【During the same period】Diao Guofeng, head of the winding shift of the electrical branch of Liujiaxia Hydropower Plant
You look at this piece, this middle part is the rotor of our generator, this is our big shaft, this is a real part of the generator, that is, we have now entered the "heart".
It's the electricity I send, all of it is collected here, and then through here, it is transmitted to our booster equipment, and the electricity is transmitted. It's like the blood in our heart, like its arteries, beats the blood out.
【Commentary】Walking into the inner room of the "heart", the height of the upper and lower is only more than one meter, and the maintenance work can only be carried out by bending over and bowing the head and squatting halfway.
【During the same period】Diao Guofeng, head of the winding shift of the electrical branch of Liujiaxia Hydropower Plant
Why do we have to clean everything on our bodies after we come in, because metal is particularly afraid of this kind of hidden metal object, metal object comes in, because it is a strong magnetic field, metal object may be caused after it comes in, scrape my insulating rod, scrape it will produce discharge, will burn my generator, so this is very scary.
【Explanation】From the "blood" test entering the "heart" to the operation of the "capillaries" of power transmission, it is not only necessary to pass "inch by inch" with the naked eye based on experience, but also to test "one by one" with professional equipment.
【During the same period】Diao Guofeng, head of the winding shift of the electrical branch of Liujiaxia Hydropower Plant
Because we have the maintenance procedures of the generator, these insulation things of mine, it has binding ropes, fixtures, whether these things have abnormally come off, or sometimes its insulation gel is not damaged, or discoloration is overheated. You see, it's all insulation, because it's all current. Lashing, unwinding, cleaning in the trough, these jobs are done by people (workers), so this has to test our installer of the winding of his technical ability, and then his degree of care, especially when working on it, are kneeling inside.
Diao Guofeng said that nearly 50 people will participate in the "heart" examination during the maintenance period, and the construction period is nearly one month. Today, after more than <> years of vicissitudes, the Liujiaxia Hydropower Station is still solid and stable in operation, which is inseparable from the silent persistence of every "hydropower person".
Reporter Gao Ying reports from Lanzhou, Gansu
Responsible Editor: [Ji Xiang]