Katayama is still the same dedicated, politely introducing which computers control fuel delivery, which ones observe the parameters of the power grid, and which ones operate circuit breakers for transformers and lines.

A modern automated power plant is fully displayed in this small control room, for Katayama and even Oda Kiri, at this time it is really full of pride, they also have this proud capital, but arrogance is not to talk about, it is still polite.

As far as Ou Wei's level is concerned, he can't raise any quality questions now, or he hasn't talked about anything at all, and after thinking about it for a long time, he can't hold back a question-

"Do you manage three shifts here?"

Even Oda Kiri, who is half a layman, was a little embarrassed, but he still conveyed this question to the past, and the answer was quickly returned: "We have a total of 257 employees here, and the operation duty adopts the operation mode of four shifts and three shifts. ”

Well, at least Ou Wei asked one thing when he didn't know it, and that was that this world-class power plant had a manpower requirement of only 257 people.

In addition, the so-called four shifts and three shifts, also known as four shifts and three operations, is the time management method that the power plant has to choose as a last resort in this sleepless place, that is, 8 hours of shifts, and then 24 hours of rest, so as to go back and forth, and occasionally rest for an extra day. At the end of a week, it's a few hours less than the standard eight hours a day, which may not seem like a loss, but it's definitely going to be extremely difficult for you to date your girlfriend and have sex with your wife.

Power plants are risky, and you need to be cautious when entering the industry......

In addition, the workers working at the nuclear power plant will undoubtedly suffer a heavier baptism at the same time, and Zhang Yifu seems to suddenly know why the birth rate in Japan is so low, and why there is such a market for marriage, love, and wives.

Wait, the main purpose of this trip is not about people. Zhang Yifu quickly pulled his thinking back, briefly observed the automation interface, and asked, "Is the automation system here only the interaction between DCS and SIS?"

Oda Kiri was stunned for a moment after hearing the question, but he still forcibly translated the past, and Katayama, who was wearing the gray overalls of ordinary workers, also fell into a certain confusion.

Not only them, but most of the people on the trip were also confused.

In the previous national conventions and national competitions, as well as in the lessons of previous lives. Zhang Yifu has conducted a study on the automation system, if you have to say that the operation of the power plant, the improvement of the unit or something is not his specialty at all, automation is the main business, after all, when he was on duty in his previous life, he faced this thing all day long.

DCS, SIS and MIS are the three twisters that pop up on the table again, skipping the damn terms, but the concept of this dude is actually very simple.

DCS is the collection of tube information, and the lowest level is collected from the unit and the boiler, and it is presented.

SIS is the mid-level factory control system. Here the officers on duty are confronted with the SIS, where they can observe the number and carry out the necessary control and operations.

MIS is biased towards office management, what financial processes, what duty arrangements and so on.

Therefore, it is not so difficult to realize the interaction between DCS and SIS at this stage, and Jiutan has basically realized it, but it is a system made by the Americans. It does not meet the needs of the Chinese, so it is relatively lame to use.

Possession of DCS and SIS. It can be said that this power plant has basically completed the automation of monitoring, I can see how many degrees are inside the boiler, and I can easily press enter to open a brake.

In this environment where automation technology has begun to be popularized, whether it has a perfect MIS has gradually become an important indicator to measure the automation standard of a power plant, and whether it is a standard for complete automation and modern management. If the Kashima Power Plant also has MIS and makes full use of it, it can only be said that the gap is a bit big.

After Katayama and Oda Kiri's exchange of words, Oda Kiriri asked, "Katayama would like you to explain the specific meaning of the abbreviations SIS and DCS." ”

"Oh, forget it. This is still a matter of communication with the engineers at TEPCO's headquarters. Zhang Yifu waved his hand, it seemed that there was no more, and I was a little relieved, "Then let me change the question, this operation interface is purely Japanese, is it translated or self-developed?"

After a little communication, Oda immediately replied: "This automation system is purely developed by TEPCO, which has a subordinate power software company and has automation technology that is not inferior to that of Europe and the United States. ”

He added, "TEPCO's software is used all over Japan, and if you have a procurement need, we can help communicate, and TEPCO's software has been running safely and efficiently for a long time." ”

"Understood. Zhang Yifu really didn't know how to answer him, Japan's hardware is really strong, but no matter what, the software is just like that......

However, through this dialogue, Zhang Yifu has become quite interested in TEPCO itself.

TEPCO is in principle a privately owned joint-stock company, and now it seems that its business scope is not only power generation, but also the manufacture of power equipment, power engineering construction, and the software industry, and Zhang Yifu himself is very interested in delving into the operation of such a company, and the rise and fall of this world-class power giant.

Then the visit to the steam turbine plant, which should have been the highlight, was lackluster, because everyone had seen Japanese steam turbines, and the Japanese steam turbines in Japan and the Japanese steam turbines in China were basically the same, and the only difference this time was probably the word "supercritical". The No. 5 and No. 6 units of the Kashima Power Plant are all supercritical units, and the steam inlet parameters are 24.12MPa.

When it comes to this kind of unit, Oda Kiri immediately entered his sales rhythm, talking about the top of Japan's motor technology, and the advanced supercritical technology, which is indeed understandable, at this time China is just going to study this thing, but Japan has been widely used for many years, and their supercritical units can really stand the test.

The members of the Chinese delegation listened to him talk endlessly, and those who did not understand it nodded frequently.

Lao Chang couldn't hold back a little, and seized an opportunity to ask: "You said that the stator of this turbine generator uses water internal cooling, and the rotor uses hydrogen internal cooling, can you explain why these two kinds of internal cooling are adopted, and is there any condition to adopt double water cooling?"

As soon as Lao Chang exited, Oda Kiri was dumb, these were all advertised according to internal materials, and he didn't know what kind of bird thing water and hydrogen internal cold was, so he had to ask Katayama for advice in a hurry.

After thinking for a while, Katayama answered in Japanese, and Oda Kiri quickly translated: "Katayama probably means that this is more efficient. ”

Chang Siping shook his head and said: "Water cooling, hydrogen cooling, there is always a difference in efficiency, you say that double water cooling or double hydrogen cooling efficiency is high I can accept, but this kind of the same one, but it is hard for me to understand." ”

Oda Kiri was immediately embarrassed and consulted with Katayama again.

This question is indeed a bit difficult for the two of them, after all, it involves relatively deep professional knowledge, and except for Duan Youwei, the people on the Chinese side who are slightly more understanding, and the others are also confused.

But Chang Siping is definitely meaningful to ask this question, this time for the idle people and so on, it is to look at the design and management arrangements of the Japanese power plant, but for Chang Siping, an expert in motor dynamics, the only task is to figure out this supercritical steam turbine, to figure out whether he is so awesome, why is he so awesome, to ensure that the one we buy can also be so awesome, rather than just taking an eliminated stupid one as a bull, this is the responsibility of Lao Chang, and it is also everyone's responsibility, but only Chang Chang can carry it at this time, because he pays more attention to this thing than the beach.

The stator and the rotor sound mysterious, in fact, it is completely literally understood, the stator is the fixed part of the motor, and the rotor is the rotating part. The huge blades of the steam turbine rotate and drive the rotor to create a rotating magnetic field, which the stator cuts to generate electricity. The losses that occur during the conversion of mechanical energy into electrical energy generate heat, and we have to cool them somehow, otherwise the metal won't be able to carry it for long at high temperatures.

Air, hydrogen and water are the only options.

Among them, the cooling efficiency of hydrogen is slightly better than that of normal air, so for ultra-high-end generators, it is actually just a struggle between hydrogen cooling and water cooling.

Among them, according to the stupid basic thermodynamics, the heat capacity of water is extremely high, and the hydrogen efficiency should be slightly lower, after all, it is a gas, and the physical properties are placed here, and the water is cold when it goes in, and it is hot when it comes out. However, when it is placed in a generator and on a stator rotor, there are more theories, and more elaborate discussions about hydrogen cooling and water cooling.

There are experts where there are exquisite, and furthermore, Mitsubishi's 1 million kilowatt supercritical unit, why is the stator water cooled, rotor hydrogen cooling, why not to use, whether there is the ability to use double water cooling, it is always necessary to figure out and understand.

But judging from the expressions of Oda Kiri and Katayama, these two are completely unable to explain clearly, as soon as they talk about business, the problem is finally completely exposed, and the situation in front of them is equivalent to Chang Siping coming to northern Hebei to investigate, Niu Dameng to answer technical questions, Chang Siping would have been pumping Niu Dameng if he was at a high level. (To be continued......) R1292