"The first line was the first line. A differential protection device erroneously operated due to internal components, causing the switches of the substations at both ends of the line to trip, which directly triggered the second line protection device to make a judgment of "overload action". You know the principle. The action is very fast and affects each other. This action quickly causes the switches of the substations at both ends of the line to trip. ︾,"

Zhang Yifu frowned and pondered: "Wait, the first line tripped and powered out, and the second line protection device detected an overload. Is the 'overload protection action' directly tripped? Shouldn't it be called an alarm?"

"Well, this is a key point. According to regulations, in the face of overload, it should have been set to 'alarm' rather than 'tripping'. This is the mistake of the relay and maintenance personnel, but this is not the most important thing."

Zhang Yifu quickly asked again: "Where is the safety and stability device? Is there no action?"

The power grid is a huge group with many nodes on it. Each node is densely covered with many protection devices, and some nodes are also equipped with safety and stability devices. In addition to gathering and evacuating power, the function of the substation node is to lift and lower voltages and connect various local power grids with different voltages. If there is a problem with the power grid, the safety and stability devices of the substation will respond correctly in a timely manner to make up for this deficit and will not cause a major disaster. The accident can be resolved on its own in the power grid.

"The safety and stability device refuses to move." Zhang Guodong said the result directly. Refusing to move means that there is no action when it is time to move, just like a soldier who refuses to shoot when facing an attacking enemy, as hateful as a soldier who does not shoot randomly without enemies.

"This is such a coincidence." Zhang Yifu leaned directly on the back of the chair. Two, oh no, three coincidences were put together and they couldn't talk.

Zhang Guodong waved his hand helplessly: "A major power accident is just a coincidence? Multiplying one low probability by another low probability, as Murphy's law says, bad things will always happen. Our power grid is always running, and can prepare for bad things for a long time."

"This..." Zhang Yifu was really surprised, "Murphy's Law, isn't it the evil theory of capitalism in our definition?"

Zhang Guodong smiled and shook his head: "When I was studying this accident, I used all methods, which is an explanation."

"Okay." Zhang Yifu nodded, "That seems to me that this is obviously a problem with the protection device, and the dispatching office is not that responsible."

"It's not over yet. The chain reaction caused by tripping of these two lines has just begun. The power is shifting across a large range, the load of other lines has increased sharply, and the voltage and frequency have begun to become unstable. Fortunately, we were at work at the time. We were in a meeting and when we heard the news, we rushed to the dispatch room immediately. The situation was difficult to clean up. My first reaction was to pull down a large part of the units at the power grid at the terminal, and pull down some loads at the terminal. Regarding safety, I have always made the most pessimistic estimates. The accident has occurred. In order to avoid further impact, there should be a spirit of a hero breaking his arm. I ordered the pull down half of the units at the terminal."

"So many..." Zhang Yifu touched his chest and exclaimed, "Has he overreacted?"

However, he quickly shook his head and said, "It's not too much, but the scheduling experience was not that good at that time, so everyone may not accept it when they suddenly mentioned it."

"I said, I will always make the most pessimistic estimates, and I will give up half of them to protect Jijing in order to avoid large-scale power outages." Zhang Guodong sighed, as if he remembered the scene back then, "And it turns out that I should be right."

"So it's half pulled?"

"No." Zhang Guodong shook his head again. "The director and Bagan were both present at that time. They reacted to you, thinking that half of the reaction was too much. "What people who are engaged in production are most afraid of is a large power outage, and they are also afraid that the production task is not completed. They think that it is enough to pull a little to a low limit. I still insist on pulling half of it, but it is a waste of time to argue like this. An accident only takes a few minutes to produce a bigger chain reaction. Bagan insisted clearly at that time, and he said he was responsible for something. I knew that I didn't have time to fight again, so I compromised temporarily, and only pulled a small part of the unit and load, and then urgently reported to the dispatch center of the Power Department."

"It seems, it's useless..."

"Yes, those grids made of seemingly solid, transformers, towers, and lines are not worth mentioning in the face of the laws of physics." Zhang Guodong waved his arm and gestured, "The accident was not controlled at all, the voltage was becoming increasingly unstable. I said this slowly, but in fact, these were things within a few dozen seconds. I told them again that I must pull a lot now, except Jijing, all of them must pull it."

Zhang Yifu was silent. At this time, who has the courage to give this instruction?

"They didn't say anything, and they were a little scared. I asked the dispatcher to order. Seeing that the director and Bagan had no explanation, the dispatcher did not dare to move. When I finally picked up the phone, the current and voltage of the power grid in the two areas had fluctuated periodically, and the voltage dropped sharply."

Zhang Yifu swallowed and spitted: "Observation, it's beginning."

A large-scale power grid oscillation, a terrible disaster.

"Yes, now, I don't need to give orders. Wherever I call, I'll trip there." Zhang Guodong sighed, "I was completely panicked at that time, and I didn't know what I should have ordered to pull all the electricity around Jijing and keep it in the city. But I thought it was too late to do this."

"What's the last one?" Zhang Yifu also felt a sense of panic.

"The North China Power Grid is violently oscillating, and the Ministry of Power Dispatching Center ordered the delisting of the order." Zhang Guodong said in a deep voice.

"It's a good idea." Zhang Yifu was also empty. If he didn't want to break his arm, it's not that the hero cut off his arm, but that the gecko abandoned his tail. If you exist in the whole world, it will affect the entire network. You must give up on you, "Where is the power supply situation?"

"Civil and industrial use have basically stopped." Zhang Guodong said calmly, "In the summary of the accident, the party and government organs, radio stations, railways, hospitals, etc. said that they were not affected, but some of them were stopped. It was just that the leaders did the work and did not report it. Everyone tacitly laid this layer of fig leaf."

"Wait..." Zhang Yifu suddenly realized something, "You wanted to pull half of it at that time. Didn't Bagan say he should pull less? Was he responsible?"

"hehe."

“…”

When a person says "I'm responsible" at a critical moment, don't believe him. Maybe he has the determination at that time. But once he is held accountable afterwards, he will change his mind when faced with substantial gains and losses.

"Let's talk about the final accident report." Zhang Guodong was unwilling to talk more, "The direct reason was that the relay insurance was incorrectly acted, and the reason for expansion was that another relay insurance mistakenly set up an overload action trip, and the reason for further expansion was that the substation safety and stability device refused to move."

"Is it all a question of rescuing insurance?" Zhang Yifu sighed.

"Yes. The responsibility operation is under the scheduling management." Zhang Guodong pointed to himself, "So no matter what happened in the middle, my responsibility cannot be shirked."

"I understand, I understand, but are others not responsible? Shouldn't the quality of this batch of relay devices be investigated? The procurement equipment is the responsibility of the production department. They blocked your order in the dispatching room. Shouldn't they feel ashamed when they hold you accountable? Take a step back and say that even if you are responsible, you won't be the result? Give me a punishment and a bonus. Wouldn't it be enough to reflect for a year or two?"

Zhang Guodong didn't explain anymore, but just took a sip of wine: "Anyway, it's my full responsibility. I can do whatever the organization handles. Those dispatchers, those regional power grid leaders, those municipal bureaus and provincial bureaus should not be punished. What I can do in the end is to protect others."

Zhang Yifu really wants to curse.

You are not great!

You are stupid dad!

Look at today!

These so-called people you keep!

Who has ever pulled you even if you have one!

As for the person you take care of the most!

The one who is responsible for the slap in the chest at a critical moment!

Has grown into such a behemoth evil!

Protect him?! This is a sin!

But no matter how turbulent the heart was, Zhang Yifu wanted to shut up.

This is the style of the father. His father's beliefs and persistence, and bringing these thoughts at this time will only make him feel disappointed, regretful, and unwilling to accept it. The past cannot be changed.

He could have thought of what happened next.

Bagan disappeared immediately, and no one mentioned his so-called responsibility.

Several people met secretly and tacitly launched a willing scapegoat.

As for whether Bagan did Zhang Guodong's work, or did he promise such words as "we two brothers must live at least one of them." I don't know. Zhang Yifu only knows that Zhang Guodong is obviously not so fond of his leaders at work. This time, he can take advantage of the problem, and Zhang Guodong is so willing.

"What about the problem with the protection device? What about the component problem of the initiator? Isn't it held accountable?" Zhang Yifu could not ask anything else. Just this sentence, he couldn't help it. It was a problem of protection from beginning to end.

"Later, the protection of that manufacturer was discontinued for a while."

"Where is there any in-depth investigation?"

"The accident investigation team has no intention of going deeper." Zhang Guodong wanted to say something, but finally he held it back.

Ning Lan in the distance suddenly put down her sweater and pointed at Zhang Guodong.

"Isn't it because Bagan collects money? What can you say?"

"Ning Lan, shut up! They just have a good relationship. How could Bagan make such a discipline mistake!" A vein on Zhang Guodong's forehead swelled, "Besides, it is my responsibility, and relay protection operation and management is the dispatcher, and it is my responsibility!"

"I won't tell you, I'll tell my son." Ning Lan looked at Zhang Yifu, "Yifu, remember, that Bagan is not a thing. After something happened, our family knelt on the ground and begged your father. Don't pull him in, look at it now!"

Now?

Zhang Yifu knows it’s too good now.

Bagan's history of making a fortune is obvious to all. He just didn't expect that there was a pitiful character of his old Zhang family in the middle.

"Dad, mom, don't mention this matter. I know, you don't want to mention it." Zhang Yifu immediately stopped the topic and looked at his parents, "I shouldn't have caused this incident at the dinner table."

Zhang Guodong was still resentful, so he filled his wine and drank it all in one go.

You say he is great and he doesn't hate anyone, it's impossible.

At least, he should regret that he had once believed in someone wrongly.

If he had let him know what Bakan said to Zhang Yifu in the end, he would probably be dizzy.

For the first time, Zhang Yifu discovered that there was such an indescribable disaster hidden in this family. The parents just now were different from the previous ones, and they were really quarrels.

For more than ten years, I have probably argued a lot about this matter, all of whom are going to be when Zhang Yifu is asleep or not present.

Which man can withstand the accusation of "smallness" and "silly"?

Which woman wants to blame her man like this?

At least Zhang Yifu is sure that no son can endure this matter any longer.

Things that have been covered for a long time have come to the forefront again.

Zhang Yifu understood his father and his mother, and they were all right.

For him, there was no longer a contradiction with Bagan, but hatred.
Chapter completed!