The three of them, together with the old secretary, came all the way to the dispatching center on the eighth floor of the building, and the power grid wiring diagram on the analog screen kept flashing, and the alarms were concentrated in the western part of Jinxi.

The young dispatchers were anxious and kept answering the phone, and the dispatching director also knew that the news had just arrived, Lin Lizheng, with thick black hair, a big comb hair, and delicate glasses, which was also a rare leader in the ministry except for Qin Yong, but he was sharper than Qin Yong and less kind.

Zhang Yifu also pays more attention to him, after all, this is the place where Xia Xue once worked, he is also Xia Xue's first leader, he has always taken care of Xia Xue, Xia Xue wants to go to Sanxi, he will also release people generously, it is rare.

Lin Lizheng saw that the minister and his entourage were coming, and the surroundings hesitated. If he hadn't allowed irrelevant personnel to enter the dispatch room in the past, but now he didn't have time to say more, so he directly began to introduce the situation: "Minister, 10 minutes ago, the 500 kV Hugang line of Jinxi Power Grid phase A fault tripped, and the overlap was unsuccessful, and the three-phase direct trip of the 500 kV small kiln line just now did not coincide. Up to now, more than a dozen 220-500 kV lines of Jinxi power grid have tripped, several of which are power plant transmission lines, and all three power plants have been stopped. Whether it is an ice flash or something has not yet been determined, and the North China dispatch is waiting for us to make a decision. ”

Although the situation was a little chaotic, Lin Lizheng was quite steady when he spoke, and his mind was quite clear, and Huang Zhenghui was a little relieved: "How do you think it's appropriate?"

"It's got to be solved. The 500 kV Hugang line and the Xiaoyao line are the contact lines between the West Shanxi Power Grid and the North China Main Network, plus the lines that tripped before, and now there are only two 220 kV lines left between West Jin and North China, and it is very likely that oscillation will occur. Lin Lizheng immediately replied, "Freezing three feet is not a day's cold, and now it is considered an ice disaster." First solve the list to ensure the safety and stability of the large power grid, and then restore the problem after troubleshooting. ”

"But ......" Bagan scratched his head and said, "Jinxi will ......"

Lin Lizheng is talking about ease, but it is disgusting for Bagan, who was disgraced last year because of the accident in Fengzhou. The advanced ones that should be taken are gone, and this time it will be a big accident again! This year it will be in vain!

"Time is limited. Lin Lizheng said simply, "If you don't have any opinions, you will order it to be dissolved." ”

Huang Zhenghui looked at Zhang Yifu: "Do you have any opinions?"

Zhang Yifu shook his head: "Baoda Power Grid, Baojing Electric." ”

Huang Zhenghui nodded, and gave Lin Lizheng an affirmative look.

Bagan naturally lost his temper, so he could only scold Lao Tiankeng.

In the next few minutes, Lin Lizheng began to continuously instruct the dispatcher to give orders.

Before the delisting, the Jinxi power grid was a part of the North China power grid. Everyone is a whole, and the dissolution of the column is to cut off this connection, and Jinxi can be fried as much as he likes, don't interfere with North China.

Of course, the so-called solution is not a brake to finish, take the current accident as an example, cut off the connection with the North China power grid, the balance of the Jinxi power grid has been broken, and it has been maintained 50Hz is difficult to maintain. Just as water flows downward, electricity spontaneously seeks to rebalance. Because of the loss of several main power plants. With the change of load, the frequency may be reduced by at least 1Hz, don't make this 1Hz smaller, this is already a very dangerous change, the entire power system is designed to operate according to 50Hz, and the change of 1Hz has the risk of destruction for many equipment.

So in order to pull the frequency back to 50Hz. A series of "low-frequency load shedding actions" are required to cut off a part of the load to ensure the balance between power generation and consumption, and only the balance can make the frequency return to 50Hz, and the intermediate principle can be expressed by a set of complex formulas. However, there is a particularly crude explanation for doing so.

A bowl of water, it has to be flat.

Now the left side is crooked and about to overflow, so you have to adjust the angle and pull it back.

Lin Lizheng is undoubtedly a master of adjustment, and a series of clear instructions have been issued, so that the young dispatchers also have a bottom in their hearts. After the dissolution of the Jinxi power grid, the low-frequency load shedding cut some less important loads, and the immediate effect was immediate, and the Jinxi power grid quickly stabilized at the standard frequency.

For the first time, everyone felt how beautiful the number 50 was.

However, this beauty may only be temporary, and the power grid in western Shanxi is still precarious, like walking on thin ice, no, it is like carrying heavy ice. If the line continues to trip, either the power generation is cut off, or the electricity is cut off, then 50Hz still can't be saved.

"120MW has been cut, and it has stabilized for the time being. Lin Lizheng counted the number before he turned back and reported, "Now we have to race against time to investigate the problem and restore the power supply as much as possible." ”

"I'm going to urge it. Bagan wiped his sweat and picked up a phone in front of the dispatch desk to use it.

"Don't use this. Lin Lizheng immediately said, "This one is for scheduling, use the one on the far left." ”

"Good, good......" Bagan wolf passed by.

The accident was temporarily controlled, and Huang Zhenghui asked, "Why is it so strict?

"Minister Huang, we have taken it very seriously, five days ago we reminded the North China Bureau and the West Shanxi Bureau, they also said that they would do some measures, but Jinxi rarely encounters this situation, there is no experience, they hope to mobilize comrades in the south to assist in guidance, just now the matter is still being held. ”

"Okay!" Huang Zhenghui snorted in a deep voice, "Don't worry, you still need people, and you still have a meeting?"

"What you are criticizing is. Lin Lizheng generously carried this pot, "We are also not aware of safety enough, so we shouldn't be so procrastinating." ”

"It's not yours. Huang Zhenghui waved his hand, and really didn't let Lin Lizheng carry this pot.

Zhang Yifu asked, "How long has it lasted?"

"I don't know much about it, if I'm not mistaken, it's been about three weeks since the first snow. Lin Lizheng nodded, "We reminded us in writing in the second week, and they also made some measures, but the rain and snow lasted too long, and the Northern Power Grid lacked experience in this area, so it was not fully implemented." ”

Zhang Yifu felt a chill in his heart.

Sleet, three weeks on.

This should be a once-in-a-century occurrence in Jinxi.

Icing usually happens in the south, and it really rarely happens in western Jinxi, so it's too late to prepare.

Icing, one of the things that electric power people hate the most, especially those who are in charge of safety and maintenance, simply hate it to the core. To put it bluntly, icing means that transmission lines and towers are encased in ice, which can cause problems such as wire dancing, wire breakage, tower tilting, collapse and insulator flashover.

This process usually does not happen, and it mostly happens in the south, and even if it does, it is not necessarily very strict if it is local. However, day after day, year after year, the climate is constantly changing and adjusting, and as long as it lasts long enough, there will come a day when all the harsh conditions are met and real disasters fall from the sky. (To be continued......)