"Hehe, no way, made in the Soviet Union, the quality is passable, nothing has happened. Yao Xinyu looked at Xia Xue and smiled, "Xiao Xia, this is the first time you have participated in the accident investigation, right?"

"It's my first time too. Zhang Yifu raised his hand.

Yao Xinyu replied: "I went to the scene of an accident with my mentor before, and I am considered to have a little experience. In principle, personnel factors and equipment problems are the focus of investigation, personnel matters are more intuitive, so generally consider whether the operation is non-compliant, whether it is accidentally touched by any equipment or wiring, after all, the probability of equipment explosion is relatively low, especially this kind of large-scale popular application of Soviet equipment. In addition, the process of inspecting the equipment is too complex and requires special professional instruments and experts in this field to conduct a detailed analysis, which cannot be concluded in a day or two. ”

Zhang Yifu pointed to the switch in front of him and said: "This No. 2 outgoing switch was also in the open state at that time?"

"No, it was originally planned that after Line 1 was closed, Line 2 would be opened for maintenance, but there was an accident later, and the operation and maintenance must be suspended. Yao Xinyu shook his head helplessly, "In short, all other switches are operating normally now." ”

"Hmm......" Zhang Yifu held his chin and fell into deep thought.

The switches of these two lines are the same brand, the same model and the same batch, and they are also running in the same environment, in fact, if you want to rule out equipment problems, you can directly repeat the opening and closing operation on Line 2 in the same way, or open and check it, but for some reason, no one mentioned this matter, even Miao Delin himself did not mention it.

Zhang Yifu pondered. After all, it is Russian equipment, and the quality should be guaranteed, even if it is really a equipment failure. It must also be a small probability event, but the No. 1 outlet switch is unlucky, the sad thing is that the No. 1 outlet switch has been rotten, and it can't be studied if you want to, so it is very difficult to rely on equipment failure.

But now it's on the wrong side. Equally far-fetched.

What a hassle.

It is conceivable that there will be a battle between backing and pushing the pot. Zhang Yifu himself is still young in the industry, and he doesn't have his own team, so don't talk nonsense in the process, hide his merit and fame.

Zhang Yifu knows the severity. Not necessarily for someone.

"It's all like this, what's so good, just tune in to the waves. Xia Xue muttered on the side, "Take a look at the recording pictures before and after the accident, maybe you can find out the problem." ”

"That's all there is to it. Yao Xinyu sighed.

People may lie, and they will lie on the spot, but this thing will never lie. Every power plant will have one or several microcomputers that are responsible for recording waves, and they tirelessly record the electrical parameters at every moment, whether it is voltage, frequency, current, power, or phase angle, etc., they will not escape their eyes.

Analyze the recordings. Maybe it's the only way now.

The leaders next to them obviously thought of this, and after taking pictures and surveying on the spot, Nangang began to lead everyone to the duty room. It's a place where a qiē operation takes place, and maybe something can be seen.

Zhang Yifu and the three of them followed far behind the large army, and the leaders gave more consideration to the issue of "backstabbing", while they were more interested in facts and truths, and after some conversations, they became familiar with each other.

"The three of us really have our own division of labor. Yao Xinyu said with a smile as he walked. "My side mainly studies electrical motors, and Xiaoxia focuses on power grid dispatching. Shaw specializes in power plant management. ”

Zhang Yifu just wanted to curse when he heard it, what is the fucking management of a power plant, leading the workers to engage in class struggle?

However, Yao Xinyu didn't have any brains to say this, and there was no praise or disparagement, this graduate student at Tsinghua University was quite approachable, at least much more approachable than Xia Xue.

The group chatted like this, and in the blink of an eye, they squeezed into the electrical duty room.

The configuration of this duty room is slightly more luxurious than that of the Jibei Power Plant, with a few more electronic screens, but in fact, it is of little significance. At this moment, the team on duty at that time had been waiting for a long time, and when the investigation team arrived, they stood up as soon as possible. At the same time, copies of the operating records before and after the accident were distributed to everyone.

Zhang Yifu carefully looked at the operation record, there is really no problem, the opening and closing are also scheduled, and it is a waste of time to look at the operation record more than once.

Sure enough, Xia Xue also finished reading it quickly, and only shook her head: "I don't see the problem." ”

"Yes, it doesn't involve the operation of the busbar, and the motors are running normally, so I can't fault it. Zhang Yifu also said.

"Who talked to you?" Xia Xue glared at Zhang Yifu, obviously still angry.

Yao Xinyu looked at the virtue of the two, although he should be sad from the standpoint, he still couldn't help laughing: "You two are really funny, what kind of hatred do you have?"

The two of them each shook their heads, only breathing, not speaking.

Soon, the leaders over there spoke.

"Is this all the records? Did you miss anything, were there any other operations at the time, were there any experiments, did you check the line, and so on. Nangang said this to the squad leader on duty.

"No, absolutely not. The squad leader said categorically, "Since before the standard assessment, our factory has fully implemented the operation record specifications, and every small operation will not be missed." ”

Nangang was noncommittal, and turned to look at the two people beside him: "Director Zhao, Director Ou, what do you think?"

Zhao Wenyuan took the lead in nodding and said, "There is no problem, the duty records are in line with the norms." ”

However, Ou Wei, the director of the production department next to him, paused, and then said: "Isn't there a step to close at the same time?"

Zhao Wenyuan was stunned for a moment, and then said: "Director Ou, this kind of operation, you don't have to be at the same time, right?"

Ou Wei pursed his lips, then shook his head and said: "This is usually the case, but accidents always stem from instant paralysis, maybe there was some special reason at that time?"

The so-called simultaneous closing, is an additional operation when carrying out the closing operation, because the various parameters of the power grid line are changing in real time, it may seem that the voltage frequency is not much different, but the angle of the alternating current is very different, which involves a relatively deep knowledge of the power system, it is difficult for ordinary people to have research, but as the duty officer of the closing must know that in the Fengzhou power plant with limited automation process, it is necessary to close at the same time to ensure the harmony of the parameters at both ends of the closing switch. It's like playing the red and white game "Circus", where you have to watch your surroundings for every jump and make sure that one hits the ground safely, or you will be burned by the ring of fire.

Because it takes 5o-1oo milliseconds from pressing the switch operation button to the real contact of the switch contact, it is necessary to play an appropriate amount of advance, and in the past, to complete this operation, the attendant needs to have extremely rich experience. Observe the complex parameters of each instrument panel by the naked eye and memory, seize the fleeting moment, and predict the completion of the closing in advance. If you want to complete the simultaneous closing, you only need to go to the equipment room next to the duty room to enable the simultaneous device, and at the same time adjust the control loop wiring that requires the synchronous switch, and then complete the operation.

Although it is easier than the human brain to pinch the second, it is still a troublesome matter, and the wiring of the control loop must be adjusted every time it is operated, so the general power plant will only call the same period in a few operations.

At the same time, the requirements for closing are not so strict, and they are mainly for motor units, and the specifications have been very vague for the closing at the outlet. But now that there is no problem, it is necessary to find a problem, and Ou Wei, who is experienced and quick to move, was stunned to find this one.

At this time, Miao Delin was already sweating profusely, wiped his forehead and said, "Director Ou, this operation ...... There is no big problem with the different periods. ”

"The problem is not a big deal, when the Fengzhou Power Plant met the standard, I was also a member of the assessment and acceptance team. If I'm not mistaken, in the operating procedures of the Toyosu Power Plant, in order to ensure absolute safety, it is stipulated that every closing operation must be closed at the same time, am I not mistaken?"

Ou Wei is not tall, his appearance is not good, and he doesn't speak very quickly, but he slowly and leisurely hits the point.

Miao Delin was dumbfounded for a while, and hurriedly looked at the squad leader on duty.

The squad leader clenched his fists, gritted his teeth and replied, "Indeed...... There is indeed a rule. ”

"Regarding the same period, outside the operation of the motor unit, outside of some contact lines, there is indeed no uniform explicit regulation in the ministry. Ou Wei said, picked up the operation record, and still said slowly, "In order to meet the standard, Fengzhou Power Plant has to raise the standard by itself, and now the sign that meets the standard is also given to you, so it is lax?

After being questioned, no one could say half a word.

Miao Delin himself only thought about digging a pit and burying himself.

In order to meet these strict requirements, in the end, it hurt himself.

Zhang Yifu watched from the sidelines, in addition to sympathy, can only sympathize, fortunately he did not add this to the safety norms, every time the closing is carried out at the same time, not tired of the attendant?

In the follow-up popularization of automation and the progress of devices in the same period, in fact, every closing will be automatic at the same time, and the hard work is done by the computer.

It can be seen that in order to meet the standard, Lao Miao also raised the requirements of Fengzhou to the era of automation, and used manpower to complete those huge and difficult operations. Of course, it is impossible to stick to everything, and after a long time to reach the standard, some dispensable things will be silently ignored, and it is not good for Lao Miao not to let them ignore it.

As a result, a flaw was revealed at this time. (To be continued)

Tips: The new domain name "biquge.info" has been launched by Biquge, and the original domain name is about to be discontinued. Please tell each other, thank you!