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679 Traveling waves

"It's really a traveling wave!" Schroeder clenched his fists excitedly, "This theory has been proposed very early, but there are too many shortcomings and has not been applied. Have you solved the difficulties of accuracy, sensitivity, and waveform correlation?"

"I dare not say that all the solutions are solved, I can only say that it is basic." Zhang Yifu sighed, "We have put a lot of effort into mathematics. In fact, we are using the mathematical achievements in recent years, not computer science. Of course, the upgrade of some related components is also essential."

"Yes, yes, in science, various fields sometimes move forward in parallel, sometimes one rises and another, and a breakthrough in a certain field may just solve the key technical problems in another field." Schroeder is ready to go, "If you use traveling waves, everything can be explained. Traditional algorithms require a long enough sampling time and then analyze each electrical quantity for calculation, but the traveling waves are not so complicated. The traveling wave head has unique characteristics. As long as this feature is captured, you can immediately make calculations and judgments."

What Schroeder said is good. The traditional method is like an old Chinese doctor who takes the pulse while asking questions. After combining various information, he tells the patient what is wrong with your heart, liver, kidney and spleen, and then prescribes the right medicine. Western medicine does not care about thirty-one. Once the x-ray is shining, the true shape of the internal organs will be revealed, and the lesions are directly given. Running waves is so unreasonable. You only need to find an abnormality and take it down in one hand.

Of course, from a scientific and technological perspective, we cannot use the vague statement of "taking the pulse" and "x-ray" to explain it. If we have to say, the characteristics captured by the traveling wave algorithm are more interesting. It analyzes the regular changes of the wave. Once these changes meet certain conditions, actions will occur.

This principle is not complicated. It was proposed as early as 40 years ago. There have always been people's idea of ​​traveling waves. However, traveling wave distance protection always has several fatal shortcomings, which will seriously affect the accuracy of judgment and make satisfactory results difficult to obtain in the experiment.

Once these points are overcome, the advantages of traveling wave distance protection will be extremely obvious.

Zhang Yifu did not fool Schneider. This overcome was not really in the field of computers or electromagnetics, but in mathematics.

Wavelet transformation does not sound very profound, but this transformation analysis algorithm that has emerged in recent years can be fully applied in traveling wave distance protection.

In fact, wavelet analysis has shined in application fields such as signal analysis and image processing, but the field of microcomputer protection is too biased, and the most professional and top talents in the world are not concentrated here. This is why such outstanding mathematical tools are placed and they were not expected to be used.

I have to say that in the reality of my previous life, it was indeed the Chinese who made breakthroughs in this regard, and China's microcomputer protection has indeed made leap forward progress. Whether it is traveling waves or wavelet transformation, it is a long and arduous process from learning to research and finally putting it into application.

"Stand on the shoulders of the giant." Zhang Yifu smiled and said to Schroeder countless times. Most of the time, everyone would think that he was humble, and only he knew how sincere he was. "Let me apologize, after all, we are the same. I really don't have the courage to say too much."

"Understand, understanding." Schroeder nodded, "This is exciting enough. It can be imagined that the future trend will be about to put into use in traveling wave technology, and microcomputer protection will reach a new level. Come, cheers!"

"cheers!"

After the cup, Schroeder asked again: "So can I publish this information? Only 866a uses the traveling wave algorithm, which is to this extent."

"Of course." Zhang Yifu said with a wicked smile, "It's epr-866a, it's better to mention another word about Constant Electric."

"Ha ha!"

The review ended perfectly. All the rumors were self-defeating. Schroeder returned to China the next day, with the intention of making some soy sauce. Don’t expect to gain such a great result. Thomas stayed for a few more days without any surprise and bought air tickets to other parts of China. Zhang Yifu introduced some people to him, and it depends on whether he could dig out the value.

A few days later, IEC issued a statement letter to clarify the previous doubts. Epr-866a used traveling wave technology, which was completely ahead of Mitsubishi's line protection in the experiment. The traveling wave technology is here, and there must be no plagiarism, everything is false.

Mitsubishi shot itself in the foot.

Just when Mitsubishi was still immersed in pain, the Ministry of Electric Power had issued regulations that all imported retention products, like domestic products, must be sent to the Institute of Electrical Science for testing, and can only be used on the Chinese power grid after passing the inspection. Note that the inspection standards are not IEC international standards, but China's standards. In addition, the first batch of inspection lists have been announced, with only 866a models. For products that have been put into production, they must be submitted to the inspection in a timely manner during the bidding or introduction process, otherwise they will not be put into production.

It was Okamoto who exploded before, and as soon as the news came, Oda Choe also exploded.

There are still some markets in China for Mitsubishi Microcomputer Protection. After all, after working hard for so many years, I have won orders from some provinces, cities and regions. The cooperation is in progress, and the ones that have just signed and have not yet been put into production, there are really a batch of more than a hundred and ten units. Considering the huge profits of microcomputer protection, this has directly affected Mitsubishi's sales of tens of millions of dollars in the Chinese market. Now this part of the cooperation has been stopped. Chinese users urge Mitsubishi to send inspections. If there is any problem, it is impossible to tear the orders.

After obtaining China's new standards, Okamoto and Oda Choy started to explode again. Many places in this new standard are similar to the IEC standard, and they put forward many requirements that they had not considered before. As the saying goes, children of poor people are long enough to be a family, and they can fight when they go out and cook when they go home. All imported products, including Mitsubishi, cannot meet these special requirements of China by considering optimistic about the power grid.

Okamoto has just suffered a heavy blow and is facing a series of technical improvement needs. It is almost impossible for a limited time. Maybe he will go with Fukuoka soon.

This is really a matter of stealing chickens and losing rice.

Things are relative. After the new standard was issued, many places had to face the possibility of disarming the protection. If they adopted microcomputer protection, Hengdian became the only choice because the foreigners had never considered China's new standards. Soon, a unit began to contact the North China Bureau to inquire about the application status. Hu Lingling and Lu Tao were naturally 10,000, which was more comfortable than imported products. Hengdian should have been brought to the door by business.
Chapter completed!
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