"Haha, there is no way, it's made in the Soviet Union, and the quality has passed, nothing happened." Yao Xinyu looked at Xia Xue and smiled, "Xiao Xia, is this the first time you are involved in the accident investigation?"

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

Yao Xinyu replied: "I went to the accident site with my mentor before, and I have some experience. In principle, personnel factors and equipment problems are both key investigation directions, and personnel matters are more intuitive, so we generally consider whether the operation is non-compliant and whether it is touched by mistake or wiring. After all, the probability of failures such as equipment explosion is relatively low, especially for such Soviet equipment that are widely used on a large scale. Furthermore, the process of checking equipment is too complicated and requires special professional instruments and experts in this field to conduct detailed analysis. It is not possible to draw conclusions in one or two days."

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

"No, I originally planned to open the gate after Line 1 is closed, Line 2 will be repaired, but something happened later. The operation will definitely be suspended." Yao Xinyu shook his head helplessly, "In short, all other switches are now operating normally."

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

The switches of these two lines are the same brand, model and batch, and are also operated in the same environment. In fact, if you want to eliminate equipment problems, you can just do it and repeat the closing operation on Line 2 as usual, or open it and check it. But for some reason, no one mentioned this, and even Miao Delin himself has not mentioned it.

Zhang Yifu thought. After all, it is Russian equipment, and the quality should be guaranteed. Even if it is a equipment failure, it must be a low-probability event. It is just that the No. 1 mail switch is in trouble. The sad thing is that the No. 1 mail switch has been rotten and cannot be studied. Therefore, it is very difficult to rely on the device failure. I believe that Miao Delin knew this and did not dare to speak nonsense.

But now it is equally far-fetched to rely on operational errors.

It's really a troublesome thing.

It can be imagined that there will be a battle to take the blame and push the blame later. Zhang Yifu himself is still in the industry and does not have his own team yet. It is better not to talk nonsense in this process and hide his merits and fame.

Zhang Yifu knows the importance of others. It’s not certain if someone is.

"What else is there to look good when you're like this? Just click on the wave map." Xia Xue muttered, "Looking at the wave map before and after the accident may help you find out the problem."

"That's all, right?" Yao Xinyu sighed.

Maybe people will lie, and they will lie on the scene, but the wave recording thing will never lie. Every power plant will have one or several microcomputers specifically responsible for wave recording. They tirelessly record the electrical parameters at every moment, whether it is voltage, frequency, current, power, or phase angle, it will not escape their eyes.

Analyzing the recording of wave charts. Perhaps the only way now.

The leaders next to them obviously thought of this, took photos on the spot and surveyed them enough. Nangang began to lead everyone to the duty room. There was a place where all operations were carried out, and maybe something could be discovered.

Zhang Yifu and the other three followed the large army far behind. The leaders considered the issue of "take the blame". They were more interested in facts and truth. After some discussion, they became more familiar with each other.

"The three of us really have their own division of labor." Yao Xinyu smiled as he walked. "I mainly study motors and electrical, while Xiaoxia focuses on power grid scheduling. Yifu is good at power plant management."

Zhang Yifu just wanted to scold people, what is the fucking power plant management? Is it a class struggle for the workers?

But I think Yao Xinyu has no idea what to say, and he has no meaning of praise or criticism. This Tsinghua graduate student is quite approachable, at least much more approachable than Xia Xueping.

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

The configuration of this duty room is slightly more luxurious than that of the Jibei Power Plant. It has a few more electronic screens, but it is actually not very meaningful. At this moment, the team on duty had been waiting for a long time and stood up as soon as the investigation team arrived. At the same time, a copy of the operation records before and after the power plant accident was also distributed to everyone.

Zhang Yifu looked at the operation records carefully. There was no problem. He asked for instructions to open and close the operation records. It was a waste of time to take a look at the operation records.

Sure enough, Xia Xue finished watching it quickly and shook her head: "I can't see the problem."

"Yes, the generator is running normally without involving the busbar operation, and there is no problem with it." Zhang Yifu also said.

"Who talked to you?" Xia Xue glared at Zhang Yifu, obviously the gas was still not gone.

Yao Xinyu looked at the two of them with such virtues. Although he should be sad from the perspective, he still couldn't help laughing: "You two are so funny, what's the grudge?"

The two waved their heads, only breathing and not talking.

Soon, the leaders over there spoke.

"Is this all the records? Did anything be missed? Did there be any other operations at that time, whether there were any tests or line checking behaviors?" Nan Gang said this to the duty monitor.

"No, absolutely not." The squad leader said firmly, "Since the standard assessment, our factory has fully implemented the operation record specifications and will not miss every small operation."

Nangang ignored it and turned to the two people around him: "Director Zhao, Director Ou, what do you think?"

Zhao Wenyuan nodded first and said, "No problem, the duty records meet the standards."

However, the director of the production department next to him, Ou Wei paused and said, "Is there no step to close the switch at the same time?"

Zhao Wenyuan was stunned and then said, "Director Ou, this kind of operation does not need to be the same period, right?"

Ou Wei pursed his lips, then shook his head and said, "It's usually the case, but the accident always comes from instant paralysis. Maybe there was something special about it at that time?"

The so-called concurrent closing is an additional operation when performing a closing operation. Since the various parameters of the power grid line are changing in real time, the voltage and frequency may not seem to be different, but there are great differences in the angle of the alternating current. This involves deeper knowledge of the power system, which is difficult for ordinary people to study. However, as a duty officer for closing, you must know that in Fengzhou Power Plant, you must close the switch at the same time to ensure the harmony of all parameters at both ends of the closing switch. This is like playing the red and white machine game "circus". Every time you jump, you must observe the surrounding situation to ensure that the jump lands safely, otherwise you will be burned by the fire ring.

Because it takes 50-100 milliseconds from pressing the switch operation button to the actual contact of the switch contact, it takes 50-100 milliseconds to be made, so an appropriate advance amount is needed. In the past, to complete this operation, the duty officer needs to have extremely rich experience. Observe the complex parameters of each instrument panel from the naked eye and memory, seize the fleeting moment, and predict the closing in advance. Now the situation has improved a little, and a device called "simultaneous device" has begun to become popular. If you want to complete the closing in the same period, you only need to go to the equipment next to the duty room to enable the same period device, and at the same time adjust the control loop wiring of the switch that requires the same period, and then perform the operation to complete it.

Although it is easier than the human brain to pinch it in seconds, it is still a troublesome thing. The control loop wiring must be adjusted every time the operation is used, so generally the power plants will only call the same period in a few operations.

The requirements for closing at the same time are not so strict, and it is mainly for generator sets. The specifications for closing at the outgoing line have always been very vague. But now it is in the stage where there is no problem and there is no problem. Ou Wei, who is experienced and quick-witted, found this one.

At this time, Miao Delin was already sweating profusely, wiped his forehead and said, "Director Ou, this operation... is not a big problem in different periods."

"Is there a big problem to talk about. When Fengzhou Power Plant meets the standards, I am also a member of the assessment and acceptance team. If I remember correctly, in the operating procedures of Fengzhou Power Plant, in order to ensure absolute safety, it is stipulated that every closing operation must be closed at the same time. I remember correctly, right?"

Ou Wei is not tall and has a good appearance. He doesn't speak very quickly, but he slowly hits the key point.

Miao Delin was stunned for a moment and hurriedly looked at the squad leader on duty.

The squad leader clenched his fists and gritted his teeth and replied, "Yes... there is indeed this regulation."

"About the same period, in addition to the operation of the generator set and some contact lines, there are indeed no unified clear regulations in the department." Ou Wei said, picking up the operation record, and still said slowly, "In order to meet the standards, Fengzhou Power Plant has to improve the standards by itself. Now that the signs that meet the standards are also given to you, I'm relaxed? There are obviously regulations that require the closing of the gate at the same time, why can't I see the word "simultaneous" in the operation record?"

After asking, no one could say a word.

Miao Delin himself just wanted to dig a hole and bury it for himself.

These strict requirements in order to meet the standards have ended up hurting myself.

Zhang Yifu watched from the side. In addition to sympathy, he could only sympathize. Fortunately, he did not add this to the safety specifications. Every time he closed the switch, he would be in the same period, so he would not exhaust the duty officer. Besides, not every duty officer had this level. It would be enough to ensure that the key generator and busbar were at the same period. Other closings were in different periods, and it was unlikely that problems would occur.

, After the subsequent popularization of automation and the improvement of the equipment during the same period, in fact, every time the switch is closed, it will be automatically closed at the same period, and the hard work will be manufactured by computer OEM.

It can be seen that in order to meet the standards, Lao Miao also raised the requirements of Fengzhou to the era of automation, and used manpower to complete those huge and arduous operations. Of course, it is impossible to stick to every item. After meeting the standards for a long time, some unnecessary things will be ignored silently, and Lao Miao is not good enough to let them ignore them.
Chapter completed!