Courtyard: The opening game robbed Lou Xiao'e into the small world

52 Power supply and distribution of rolling mills
“Xiao Jiang, you are the monitor now, and the electrician class is under your control. You can see the arrangement! I don’t care!” Director Chen left the room of the electrician class after explaining.
Jiang Hao, led by another electrician named Zheng Yang and another named Tao Aihua, inspected the high-voltage power distribution room of the factory. The factory’s general voltage drop station is a single building in the northwest corner of the factory.
On both sides are the transformer rooms, and in the middle are the 35KV high-voltage power distribution room and the 6KV secondary high-voltage power distribution room. The capacity of the transformers is two 10,000KVA capacity. Jiang Hao feels a little incredible. You must know that any steel plant in the future is powered by 110KV or even 220KV, and the total power supply capacity is at least 100MW. In a private steel mill in Hebei Province that Jiang Hao came into contact with, there were four 35KV high-grade rooms in the factory. It is no wonder that the highest voltage of power supply in this era has reached 110KV, and there are not many 35KV substations in the country.
Jiang Hao asked two electricians to open the door of the high-level distribution room. There was a light switch at the door. Zheng Yang turned on the light, and the distribution room was instantly lit up. In the middle of the gate is a 35KV high-voltage power distribution room. It is powered by two 35KV external lines. It is said to be a high-voltage power distribution room. In fact, there are many separate intervals inside, all of which are built with brick walls. The 35KV switch is obviously an oil-less circuit breaker. The isolating switch is installed on the wall, and the busbar is supported by porcelain bottle-type wall bushings and insulators, and it is not a copper busbar of later generations. The incoming line compartment is an isolating switch, the second and third compartments are metering compartments, which are equipped with current transformers and voltage transformers respectively, the fourth compartment is the PT arrester compartment, and the fifth compartment is the SN Series of oil-less circuit breaker compartments, the sixth compartment is the isolation switch outlet compartment. There are walls on both sides of each compartment, and the front is separated by barbed wire, and the protection level is IP2X standard.
The power distribution room below 6KV is the power distribution cabinet. The old-fashioned cabinet is similar to the GG1A, but the volume is obviously larger than that of the GG1A. The main reason is that the volume of the components is too large, which is limited by the insulating materials and technological capabilities.
There are ten power distribution rooms in the workshop, which are distributed in each workshop. The low-voltage outlets are 380V and 220V, but the wiring method is three-phase four-wire system. Moreover, the cabinet type is not as good as the old-fashioned PGL. A contactor with dozens of amps is actually comparable to the frame circuit breaker of later generations.
However, it seems that domestic vacuum tubes have already started research this year, and it will take ten years to produce results. Emperor M seems to have been officially put into operation in the past two years. The outlet of vacuum tubes, vacuum circuit breakers and contactors can provide the basis for the take-off of the power system. Now there are few power plants in the country, and the power shortage is severe. Fortunately, the electrical equipment for household electricity consumption is only a light bulb, and many people even have electric light bulbs. Reluctant to open.
Although Jiang Hao is slightly proficient in power system, he does not understand vacuumHow to strengthen the vacuum breaker, and do not know how to improve the material of the vacuum fracture and contacts. In the future, the breaking capacity of the vacuum breaking capacity is at least 25KA. Now it is very difficult to achieve 3KA in ten years. I don’t know if the system will provide this in the future. aspects of technical solutions.
The production line of Hongxing Steel Rolling Plant is relatively complete. There are workshops for blast furnace, ironmaking, steelmaking, and finished product processing and manufacturing, but the degree of automation is almost non-existent. Unlike later generations, mining and refining are automatically controlled by PLC.
The first three types of workshops are high-temperature workshops, which are the most laborious. The latter workshops are better, just some mechanical equipment. Liu Haizhong, Yi Zhonghai, and Jia Dongxu in the courtyard are all processing and manufacturing workshops.
Jiang Hao intends to get familiar with it for a while, and then arrange for someone to learn the insulation test to check whether there are some defects in the running line. As for the improvement problem, that is a later matter.
Along the way, Jiang Hao, Zheng Yang, and Tao Aihua asked a lot of questions about electricity, as well as the distribution of electricity in the existing factory area, power cable specifications, switch matching, protection selection methods and control methods. . Zheng Yang and Tao Aihua felt that their young monitor was unfathomable.
At noon, Jiang Hao was going to eat with everyone in the cafeteria. Zheng Yang smiled and said to Jiang Hao, “Squad leader, have you brought your lunch box? Now it’s time to eat. Let’s go to the office to get the lunch box and tickets and call them. Let’s eat.”
“Yeah! I brought it in my bag, so let’s go back now!” Jiang Hao raised his hand to check the time, it turned out that it was half past eleven.
Jiang Hao admired these two people very much and asked Tao Aihua, “How do you know it’s almost time for dinner, it’s half past eleven, you guys are really amazing!”
Tao Aihua laughed and said, “We either watch the sun, or we just rely on our feelings. After decades, it doesn’t feel much worse. You don’t have to wait for the factory’s bell for dinner. If we go, we don’t know when our team will queue up.”
Jiang Hao continued to ask, “Did anyone queue up in the cafeteria ahead of time?”
Zheng Yang nodded and said, “Of course there are, and there are a lot of them. You saw one of the workshop clocks just now. Some people set the clocks forward by five to ten minutes. , when we go there on time, the day lily is also cold.”
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