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

54 Electricity problems in factories (plus 2)
Zheng Yang patted Xu Damao on the shoulder: “Projectionist, it’s alright, I’m under Squad Leader Jiang, and of course I’ll help Squad Leader Jiang well. Of course I’ll watch the movie, and we’ll find you later!”
Tao Aihua also smiled. The meal was quite harmonious. I don’t know how Xu Damao and Killing Pigs clashed, but after getting in touch, Xu Damao is a person with all sides, and apart from bragging, it should be unlikely that he would clash with others.
After eating, Jiang Hao returned to the maintenance department. When Director Chen saw Jiang Hao coming back, he waved at Jiang Hao, and Jiang Hao walked over with a smile.
Director Chen poured a cup of tea for Jiang Hao and put it on the coffee table: “Sit down, Xiao Jiang! Drink some tea first.” Nowadays, most people can’t drink tea, and there are quotas. Jiang Hao blew, took a sip, um, it feels okay, anyway, he can’t taste anything. In the original world, Jiang Hao drank tea to refresh his mind, usually only one or two hundred yuan per pound, such as Biluochun. He occasionally drank black tea, even if his customers sent a lot of tea, he basically gave them away.
Director Chen asked, “Xiao Jiang, I turned around in the morning. Have you basically finished reading it?”
Jiang Hao nodded and said, “Well, I took a look at it. We took a look at our main drop station and each distribution station, and the production line in the workshop also changed a bit.”
“Is there any problem?” Director Chen is very concerned about this aspect, and also wants to know how much Jiang Hao knows about electricity.
“Well, there is no big problem, but there are still some general problems. The first is that our voltage seems to fluctuate a lot and is not very stable; the second is our line, the power supply capacity is 20000KVA, and They are all equipment with relatively low power factors such as electric welding and machine tools. Our current power distribution design does not have high-voltage and low-voltage capacitor compensation. In this regard, our power consumption loss is relatively large. I think it is necessary to improve it. The power grid and power quality of the factory are also very good. The third is that our current busbars are all aluminum bars, so the places where our aluminum bars and aluminum bars, aluminum bars and copper blocks overlap must be treated with conductive paste to prevent The galvanic action causes the contact resistance to increase, the lap joint burns out, or the loop resistance is too large.”
Director Chen nodded and said: “The third question is just fine if you look at it and deal with it. As for the voltage problem, our rolling mill is fine. The residents nearby often suffer from power outages, and there is not enough electricity in the capital. Our power construction started late and basically It’s all 50 years ago. So voltage fluctuations can’t be helped. Do you have any solutions to these two problems?”
“There is a solution, but it needs basic electrical components to realize it. I don’t know if there are high and low voltage capacitors produced in Xianyang in China. Our secondary voltage is 6KV, so we need 6KV power capacitors and 0.4KV capacitors. , to improve the power factor, it is necessary to calculate the specific capacity of the capacitor. As for the 6KV, about 15% is enough for us.Electricity is lost.
The voltage is unstable. If we have the conditions, we will convert the two mains into transformers with automatic voltage regulation, but it is not known whether there is an automatic voltage regulation device in China. If not, then we will install a voltage stabilizer transformer in front of the equipment that is more sensitive to electricity voltage, so as to avoid voltage instability, damage to the electrical equipment, and cause equipment damage and personal accidents. Of course, we can also suggest that electric power companies or electric power research institutes study automatic voltage regulation equipment. In fact, for them, they should not have much technical content. If it is a dry-type transformer in the future, the requirements for the voltage regulating device will be higher. We now have oil-immersed transformers, which are not that complicated. ”
Director Chen continued to ask, “Do you have any other suggestions?”
“Well! It’s nothing, the first is to strengthen the training of electric safety knowledge, not only for our electric power team, but also for the employees of the whole factory.
The second is to strengthen the use and maintenance of electrical equipment. You can set a maintenance cycle to regularly remove dust and mechanical lubrication of electrical equipment.
The third is to conduct preventive tests on the insulation performance of power equipment every one to two years, so as to eliminate hidden dangers of insulation in advance and reduce the accident rate of power equipment.
The fourth is to regularly perform maintenance and sensitivity tests on our relay protection devices, and calculate and check the setting of the protection figures.
Fifth, that is the future, which is our low-voltage grounding method. This is a common design problem involving the national power grid. Our current low-voltage side is TT grounding method. If considering the safety of electrical equipment and life safety, Still need TNC grounding method or TNCS grounding method, that is, three-phase four-wire system and three-phase five-wire system. ”
The two continued to talk a lot about the management of the factory’s electricity consumption. Jiang Hao shared some of his later experience with Director Chen. Originally, Director Chen also graduated from a school majoring in electric power, so he is quite proficient in this aspect. , but in addition to being more familiar with some of the current equipment than Jiang Hao, others are not as good as Jiang Hao. After all, after reading so many electric power papers, national standards, and Ministry of Electric Power standards in later generations, it is not for nothing, and Jiang Hao himself is not only responsible for the complete power design of the factory, but also responsible for the power supply and distribution or power transformation and distribution design of 35KV and below, and even 110KV and 220KV are slightly involved.
It was almost time to get off work, and Jiang Hao and Director Chen said hello again. As for his electric power team, everyone waited to get off work and went outside to have a meal. As for those who stayed on duty, Jiang Hao also told them that after dinner Then pack a copy and let Zheng Yang come back and bring it to them.
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