When the experiment started in the morning, the two foreigners were very happy to see Zhang Yifu coming, and immediately started chatting and completely left Okamoto and Oda Kei. The reason was quite simple. The two of them always came over to Hei Hengdian with deep grudges, which made people uncomfortable, let alone the nonsense of doing the two experts.

Zhang Yifu is much more funny. He talks about the customs and cultures of Beijing, which is easier and casual. Moreover, he is very happy to share the current situation of China's power industry and even willing to introduce relevant cadres to them to know. This is simply wonderful.

This is obviously a win-win situation. Whether it is AES' investment in power production in China or introducing Siemens' turbine technology, it is an inevitable trend. Zhang Yifu is sharing his knowledge on the surface, but invisibly obtaining the information from the two of them. Whether it is Siemens' comprehensive electrical equipment production management theory or AES' investment in power plants around the world, he also benefited a lot.

This freehand chat lasted until the end of lunch and returned to the test room. Just when everyone was sleepy, Hu Haitao sent a report from the morning. Since both products were excellent, the test progress was very smooth. The passing of the water was just slightly different in the action response time, and they both met the standards. Sometimes you will be higher, sometimes I will be like this, and the two products are still the same.

"If you continue like this, it can only prove that both sides are excellent." Thomas was quite satisfied with the result. He could finish the task early and go to provinces and cities in China that may require electricity investment.

"Well, the most important difficulties have been passed, and there should be no big problems later." Schroeder also expressed his affirmation, "I didn't expect that China's microcomputer protection level is really so high."

Seeing this, Hu Haitao expressed his demands with Zhang Yifu's translation. Anyway, he was rich in time. They hoped to conduct additional tests and evaluations according to Chinese standards. The two international experts naturally had no problem, but when asked about Okamoto and Odagiri, they encountered serious opposition.

The same thing is said. Mitsubishi suffered a loss in Beimo and was determined to be unable to accept the standards specified by the Chinese. The water here is too deep.

"One thing comes from one thing." Okamoto said to everyone without any permission, "This time it is an evaluation of international standards. If it is an evaluation of Chinese standards, it will be conducted separately and we will participate voluntarily."

Thomas shook his head helplessly at Hu Haitao.

Hu Haitao also explained helplessly that it is rare to gather so many people and go through a lot of effort to evaluate the products. The products are to be used on the Chinese power grid, and it is a pity not to follow the actual demand standards. Besides, the main purpose of this experiment is to evaluate which product is better and whether there is technical plagiarism. The current results are not enough to draw conclusions.

But no matter what he said, the Japanese just refused to agree. You can continue to do further experiments. You can do it yourself. The two experts will give the Hang Telephone reviews separately. It has nothing to do with us.

After persuading both sides, Schroeder had a sudden idea and revealed a plan that both sides could accept.

The current situation is smooth and it is really hard to tell the difference, so both sides naturally don’t like it very much. In such an almost undifferentiated result, on the one hand, Hengdian cannot prove that it has not copied it, and Mitsubishi cannot prove that its products are better.

After all, both sides are too high in their level. Such standards cannot meet their requirements for the test, just like two top students taking a simple set of test questions. Both scored 100 points are boring.

Then the easiest way is to come up with a set of super difficult questions.

Schroeder took advantage of the situation and proposed that I am discussing the feasibility of a set of future standards. The requirements of this set of standards have exceeded the current technical level of microcomputer protection. It has put forward higher requirements to adapt to the overall safety and stability of the power grid. This set of standards will be launched in the future. But I don’t know if it will be three years or five years later. If both parties accept it, you can try it according to that set of standards. Aren’t you two top students so proud? Let’s take the doctoral students’ questions.

Hearing this, Okamoto nodded immediately. He was absolutely confident. Hang Dian plagiarism is a fact, but it would never be able to copy our Yamato Soul. If we raise the standards, we will definitely reveal our true colors.

Zhang Yifu even agreed, "Little girl, stop calling me." Grandpa felt a headache when he heard this. It should have been like this long ago, so you should know what the gap is.

However, Chen Yanrui secretly pulled Zhang Yifu and expressed his concerns.

"Yifu, is it really going to be like this? We don't know what the standard situation is..." Chen Yanrui took a steady route after all, and now he is incompatible with Mitsubishi. If he adds things to his feet, he will be troublesome.

"It's interesting to know if you don't know. The treatment of various extremely complex situations is the advantage of our products."

"After all, they have accumulated more than ten years of experience... We have only been running this year, and it is the third version so far."

"Then it's not embarrassing to lose!"

“…”

With the recognition of both parties, Schroeder consulted the IE headquarters and faxed the new standard and then took a look at it after copying it.

Everyone was shocked now. The existing standards are equivalent to requiring you to do your job well. Junior high school students are quadratic equations, and plane geometry is enough. This new set of standards allows you to solve many problems and difficulties that cannot be required at present.

In the field of microcomputer protection, there are many conceptual theories that have not been implemented at all during the research stage. This set of standards assumes that microcomputer protection should reach the level after all these are realized.

After seeing it, Okamoto was surprised and then secretly happy. In terms of product design, he always strives for excellence and perfect details. The way he deals with these problems will undoubtedly be more stable. Moreover, it has been more than a year since Zhang Yifu visited Japan. Their current products have been upgraded several versions, and he cannot copy new things.

Zhang Yifu remained calm and his heart remained unmoved. He had a look at Hu Haitao, which was so funny.

This standard has many similarities with the first draft of the China Microcomputer Protection Procedure Standard that Hu Haitao just obtained, and all requirements are more detailed. Some situations that were not considered mismoving are clearly stated here that export trips are not allowed, and they are further ahead in various parameters, putting forward higher requirements.

After both sides recognized this experiment of doctoral students was launched again. This time everyone took it seriously, Schroeder and Thomas had no intention of continuing to make soy sauce, paying great attention to the performance of existing products under this standard.

"Thanks to the most advanced testing equipment here." Schroeder only now lamented the advanced nature of the large-scale dynamic mold testing system. "If you want to test this set of standards, you must introduce such equipment."

The current grid simulation test system is indeed much more complex than the general one. According to the needs, up to 8 tested microcomputers can be connected at the same time to simulate various points in a huge power grid.

Hu Haitao and others adjusted the wiring and built the environment according to the requirements in the new standards.

The first item to be tested is very difficult.

Line distance protection instantaneously cut off the fault range. Traditional line distance protection does not rely on communication to receive information from the opposite end. If it is only judged by a single end, it can only be instantaneously cut off the fault within 60%-70% of the distance of the line. The reason is very simple. Considering the actual junction of the power grid, on-site measurement errors, etc., it is difficult to accurately determine whether the fault near the end of the line is from this line or from an adjacent line. If the distance exceeds 70%, it is inconvenient to determine whether it is within the range of this protection. Therefore, the full line protection requires communication between the two ends, because one

If the end exceeds 70% of the distance, the other end must be within 30% of the distance. Then, through the information handshake, the two ends will be a fault within the area and trip. If the fault exceeds 100%, it will definitely not be within the range of the opposite end. Once the information of the two ends meets, it is an out-of-region fault, and tripping is a mess. It is just to determine whether the line is faulty through the communication channel and then take action. This will undoubtedly affect the protection operation time. Quickly cutting off the fault is a safety requirement for the power grid, so quickness is the most important indicator of relay protection.

Simply put, in traditional standards, if the line length is 100km and the fault occurs within the range of 70km, it requires instantaneous action tripping. Outside 70km, it takes a certain amount of time to wait for the comprehensive judgment of the peer information. If it is at 100km, it is my responsibility. If it is at 101km, it is the next line and I will not move.

The errors of traditional protection products are here. At this distance near the junction of the two lines, protection will inevitably have errors in judgment, specifically the distance between 95km and 105km.

I was focusing on the new standard proposed in this area. Originally, it was enough to ensure rapid action within 70%. Now it is proposed to reach 95%, which is based on the more accurate working current of the microcomputer and more accurate logic algorithms, or in other words, it puts forward a standard that is temporarily difficult to meet for algorithms and logic.

Faced with this standard, Okamoto was ready to go. Just kidding, Japan's relay protection and signal components must be the most accurate, and the accuracy of distance calculation is perfect. Unless the Hang Electric products steal these things from a Japanese factory, they cannot be better.

Mitsubishi took the lead in conducting tests, conducting four sample tests at four within-line distances of 85%, 90%, 95%, and 99%, and then conducting four tests at 101%, 105%, 110%, 115%, and off-line distances.

In the result, Oda Choi's confidence was also fully confirmed.
Chapter completed!