"Yes...... Schroeder scratched his head vigorously, but couldn't help but be curious, "I may not be able to explain it a little......"

Zhang Yifu sighed, and after looking at Chang Jiang and Chen Yanrui, he said: "Then I will give the most basic explanation, in fact, this explanation has also revealed our key technology, Schroeder, I explained it completely for you." ”

Zhang Yifu patted Schroeder as he spoke, which made him a little embarrassed: "Actually, it doesn't have to be ......."

Zhang Yifu quickly said: "We have a special method to directly and instantaneously determine whether the fault point is within the protection range, and eliminate the influence of transition resistance, branching coefficient and so on. ”

"Oh!!" Schroeder's eyes lit up, and he was also a professional, and immediately had many associations.

The fault is communicated to the microcomputer protection device along the line in the form of sudden changes in current and voltage.

So is there one of these electrical parameters, a subtle parameter that can express whether the fault point is within the range, and is there a way to decide the fault without a lot of logical calculations and time sampling?

In traditional microcomputer protection, it is necessary to sample for a long enough period and analyze enough electrical quantity to determine the fault, which is the biggest difficulty in limiting the response time of microcomputer protection.

The standard has been raised from 20 ms to 30 ms, which seems to be only 10 milliseconds, but every 1 millisecond shortening in the meantime has required a huge effort, and Hengdian seems to have bypassed these efforts and captured a unique and interesting way.

It must be yes, electricity travels at the speed of light, if there are one or several parameters that can accurately judge the fault distance, the protection will definitely be able to capture it in the first time, no need to sample the power frequency for half a cycle, only a small feature. Hengdian must have mastered such technologies and algorithms...... Only in this way can the current results be explained.

But after all his thoughts, he still couldn't imagine what kind of characteristic parameters there were for the electrical quantity inside and outside the line. Is it judged by the two ends of the communication? That will definitely not reach the 20ms action, and besides, this top-notch test is only single-ended, and there is no communication channel......

But what kind of technology is this? A technology that improves both the speed and selectivity of protection!

Schroeder's eyes suddenly lit up, and he opened his mouth to pop out a professional term at Zhang Yifu's side. But I still held back. Seeing this, Zhang Yifu only smiled slightly: "You should have guessed correctly, let's talk after the test." ”

Schroeder nodded excitedly: "I can't think of it! I can't imagine that it is the Chinese who have perfected this technology!"

At this moment, the evaluators, including Hu Haitao, are all enthusiastic, and what they can't imagine has really happened?

The presence of IEC experts confirmed this, which is so exciting.

Everyone suppressed their excitement and began to carry out more high-standard tests, more severe faults in the transfer area outside the area, failures in adjacent lines one after another, and failures in the oscillation process. After three in a row, Okamoto's face almost turned dark purple, and his belief in excellence was almost destroyed, and in the face of all kinds of extreme, complex, and unexpected situations, Hengdian's response was always so accurate and fast, like divine help. Although Mitsubishi is also doing well, it is almost the highest point of the existing state of technology. But in the face of the unexplained future warriors, the only way to bow is to bow down.

Faced with this result. Schroeder's expression became more and more excited, these complex and extreme situations are not something that can be accurately solved by these current molding algorithms, it must be yes, Zhang Yifu must have crossed that deep trench!

Although Thomas is not a major in microcomputer protection, he has been working in the power system for many years. finally had some understanding, and when the test was almost over, he patted Zhang Yifu in embarrassment: "Can you explain a little, otherwise this guy will be distressed for a few years." ”

Zhang Yifu smiled awkwardly, looking at Schroeder's eyes and Okamoto's curse. After thinking about it, he said: "China is very big, the southern typhoon landfalls, and the northern thunderstorm season will encounter multiple lines in a row of faults and tripping, so the problem we consider will be more complicated." It has to be said that our power grid is much weaker than virtue at this stage, and in our words, the children of the poor are in charge early. ”

The children of the poor are in charge of the family at an early age...... This obviously could not satisfy them, and Zhang Yifu had to reveal a little bit: "First of all, we have adopted the cosine algorithm and the improved half-wave Fu algorithm in many places, so as to eliminate many of the original problems. ”

"How did the cosine algorithm work?" Schroeder's eyes lit up, "How did the Fourier algorithm overcome its filtering shortcomings? In addition, can these two alone overcome such a series of difficulties? Isn't the most critical technology here?"

"Hey......" Thomas coughed, "it's rude to ask." ”

"Whew......" Schroeder scratched his head anxiously, "this is amazing...... I can only say now that I hope that 866A will be certified by IEC as soon as possible, so that more people will know about this product, and Zhang Yifu should indeed share and exchange some technical details, which is an industry-wide thing!"

"Finally......" Schroeder looked at Okamoto and shook his head firmly, "Your previous words are really slanderous, Hengdian does not need to learn any point from any product at all, at least this 866A is already completely at the level of the next generation of products." ”

Okamoto waited for a long time in front of the gallows, and finally ushered in the final moment of ashes, he looked at Schroeder blankly, in his heart, ten thousand evaluation teams who did not believe in China, but the words that came out of the mouth of this German IEC professional committee member were enough to shock him.

Oda Kiri hurriedly blocked Okamoto, who didn't know how to express it, and smiled awkwardly: "I'm sorry, I'm sorry......"

Zhang Yifu squinted his eyes and snorted, he had already seen through Xiao Tian's face: "Don't always be sorry, can you write a letter of apology publicly, tell the world, and express your apologies?"

"I have to ask the head office for this......" Oda Kiri is still the same appearance of no pain, no itching and no beating, which translates to the impossibility of this.

"You see, you were so resolute and quick when you issued a notice slandering us, and when you were asked to admit your mistake and take it back, you dragged it out so much. Zhang Yifu had no intention of arguing with Oda Che again, so he simply grabbed Schroeder: "If necessary, it is no problem for me to exchange some technologies, but before that, can IEC help clarify and introduce our products, and publicly and officially show that it is ahead of Mitsubishi's, and there is no reference at all." ”

"It's not a problem at all, and Thomas is witnessing it. Schroeder excitedly shook Zhang Yifu's hand, "I will do this when I go back, and please accept the invitation to our meeting later, and share a little, I think everyone will be very happy." As you said, the power grid in Europe and the United States is very strong, which also allows us to ignore the development of relay protection to a certain extent, and the struggle and hard work of Chinese counterparts on the current situation of the power grid make us very admired!"

"No problem. "Zhang Yifu and Schroeder hit it off, each takes what they need, IEC issued a statement that it is 0 cost, Zhang Yifu in order to gain this reputation, but also naturally to reveal a little bit of technology, it is worth it.

Schroeder's attitude has revealed everything, and Hu Haitao, Chen Yanrui, Chang Jiang and others are even more passionate.

They have never been so compared before, and they have no self-confidence to compare with capital at all.

Now that we have been framed by Mitsubishi out of nothing, we didn't expect the gap to be so big!

Hu Haitao is the happiest one, in this way, the power research institute will test imported products in the future, it is simply too logical, our technology has begun to lead, you want to come to our field to mix, you must let us nod!

This is where the over-standard test comes to an end, and the rest of the final test is no longer of much concern, and in the end Schroeder and Thomas sign it almost without looking at it.

At the end of the analysis meeting, Okamoto had already taken the lead in leaving the venue regardless of the minimum politeness, leaving only Oda Kiri to play soy sauce here. IEC experts lamented the breakthrough technology of China's microcomputer protection, and very much hoped that China would also participate in the international microcomputer protection exchanges, and they had too much work to do and too much information to share after they returned.

When the news reached the Hengdian Laboratory, the engineers were also stunned.

IEC experts personally confirmed excitedly that Hengdian's microcomputer protection products are super-level, Mitsubishi is only first-class, and Hengdian is already super-first-class.

Although this is only a small product in the microcomputer protection industry, the results are exciting enough, after all, they have personally experienced and personally created a small catch up with the Premier League in the United States and Japan.

It's a small step, and it's a big step!

The automation project is still in full swing. Only now, the eyes of the engineers are filled with something called self-confidence, and any skepticism is washed away, just to win the bid!

At the dinner, Oda Kiri simply retired. Zhang Yifu, Hu Haitao and two IEC experts at the same table, on the prospects of the world's power industry talk, the two lamented the speed of development of China's power technology, now even in the international power grid, China's national committee has a pivotal position, once the microcomputer protection results are released, will inevitably cause a sensation.

But no matter how much he talked, Schroeder always held a question in his heart and wanted to get the answer from Zhang Yifu's mouth.

With the help of the others toasting and chatting, Schroeder grabbed Zhang Yifu and cast a serious inquiring look.

Zhang Yifu also couldn't avoid it and sighed.

Looking at each other, the two said the same words.

“Travelling-Wave。 (Traveling waves) (To be continued......)