Through the relay to protect the power equipment, this is the role of relay protection, although everyone is trying their best to avoid accidents, but accidents will always happen, through the automatic judgment, in the shortest possible time to take a series of measures, to selectively cut off the fault of the cut-off, to protect the power equipment, this is a link in the power industry can not be ignored. It's like an insurance, whether it's a priceless power generation equipment or an ultra-high voltage power grid, in the event of an accident, the relay device is their initial and final insurance to avoid total paralysis and serial explosions.

Zhang Yifu patted Chang Siping and said with a smile: "I turned around, and this direction is more appropriate." ”

"You say Hengdian?" Chang Siping quickly shook his head, "I don't know much about Jibao, Chang Jiang still knows a little." ”

"It's not that complicated, you'll understand it as soon as I say it. Zhang Yifu pointed to a small box and said, "This is a judgment circuit, you know binary, right?"

"Yes. ”

"Well, this screen cabinet is a series of binary judgments, you see. Zhang Yifu gestured along that vein, "You imagine that these boxes are not boxes, but on behalf of '0' or '1', more than a dozen boxes on this wall, after receiving the power parameters, judge 0 or 1, and finally export, give 0 or 1, '0' is normal, do not operate, '1' is a problem, to trip, this is the relay protection." ”

"That's it?"

"That's all. Zhang Yifu added, "This screen cabinet is a relay of power equipment, sitting 0 or 1 judgment at all times, once the power signal fluctuates, they will judge whether there is a problem with the equipment, not the problem of the equipment will not operate, it is the problem of the equipment to pull the equipment." There are many such relay devices. It forms the relay protection of a power plant, and if there is a problem at any point, that point will immediately alarm and trip, and the rest of the place will operate normally. ”

"Got it. Chang Siping nodded in contemplation, then pointed to the small box and said, "This is inside." Knowledgeable, isn't he?"

"It's not that deep, he's a transistor type, and inside the box is a set of logical judgments. Zhang Yifu nodded his head as he spoke, "I probably know the logical judgment part, and I have studied all kinds of algorithms." ”

"I see what you mean. Chang Siping frowned and said, "Do you do this, in the direction behind the economizer?"

"You can give it a try. ”

"This is a new direction for Hengdian, and my personal understanding is limited. ”

"Is it a bypass!" Zhang Yifu said with a smile, "This matter can just be connected with the projects of Chang Jiang and Chen Yanrui later, because it is the basic hardware." You can't do it. ”

"How is it connected to automation?" Chang Siping was confused.

While chatting, Oda saw that the two of them had stayed in front of the relay device for a long time, and also came over: "Two, this is the previous generation of transistor relay protection, if you are interested, you can take a look at the integrated circuit protection next to it, as well as the most advanced microcomputer protection." ”

Oda Kiri said, leading the two to the booth next to them.

Integrated circuit relay protection. It is a newer generation than transistors, and it looks smaller. The number of display lights and pressure plates is more, to put it bluntly, the multiple boxes on the screen cabinet are concentrated, and the circuit is used to replace the transistors of the dozen boxes to judge 0 or 1.

As for the price, the two are comparable, but they are certainly more advanced.

Oda didn't stop, and pulled the two of them to a modern-looking screen cabinet. Embedded in the screen cabinet is not so much a box, but a small box placed horizontally, about the size of a computer host, and a small display screen.

"This is an all-digital, automated microcomputer protection device that we have just developed. Oda Kiri, who proudly explains, "It's different from the traditional way of judging. Microcomputer protection can convert power parameters into digital signals, and the most accurate calculations can be made through the computer to respond, whether it is reliability, selectivity, speed or sensitivity, it has cross-era significance. ”

"You see, it has something to do with automation. Zhang Yifu smiled at Chang Siping.

Chang Siping also immediately understood that power plant automation, to put it simply, is undoubtedly to convert all kinds of electrical, pressure, temperature, speed and other parameters into numbers, unified into the computer system for management, there are too many difficulties, and it needs to be developed for a long time, while microcomputer relay protection is relatively specific, only need to analyze a small number of jù, the most basic response.

Think about it one more step, in the era of transistors, the main difference between domestic equipment and imported equipment is in reliability, because of the gap in the level of manufacturing technology, domestic equipment is inferior to imported equipment in terms of sensitivity and response accuracy, for example, the environment is humid in summer, which may cause domestic equipment to malfunction when it should not act, and when there is a real problem, domestic equipment may be rejected because of low reliability.

However, in the era of microcomputers, a qiē is converted into a digital signal, and the computer decides whether to act or not, and the main consideration is the algorithm and software programming, and having a more advanced and accurate algorithm will be the core of competitiveness.

And this algorithm is an important direction of automation, and it is also Changjiang's professional direction.

In the face of this qiē, Chang Siping is still thinking, how long will it take for Chang Jiang to make a little sign of such a high-tech thing?

In fact, he was completely thinking in the wrong direction, and the real algorithm expert, the programmer ape, was standing beside him.

The microcomputer protection algorithm in front of him is completely an antique of the last century for Zhang Yifu, and in the future development, future generations have already summed up more sophisticated and complex algorithms and logic that make people's heads blow up.

"Xiao Tian Che, what is the market price of such a set of microcomputer protection devices?" asked Zhang Yifu, hiding the greed in his heart.

"It's hard to give an exact figure, and I can only say roughly if it is decided based on the size of the purchase and the exchange rate. Oda Kiri, after a moment's thought, said, "According to the yuan, it should be less than one million." ”

Zhang Yifu almost wanted to laugh when he heard it, now this thing is absolutely sophisticated, and it is reasonable to sell for millions, but in the future, this thing will be the price of a cabbage. 100,000 done.

This gap is not simply ten times, counting currency depreciation, inflation and so on, the profit gap has reached an unbelievable level.

Maybe the topic of power plant and grid automation is still too big for the current Hengdian, but microcomputer protection is definitely a reliable direction, and he is very clear. Twenty years later, 100% of the relay protection devices used in power plants and power grids are microcomputer protection.

Think about it a little more, this economizer, maybe the technical principle is simpler, others play some tricks, and they can still copy it, microcomputer protection, he is useless to play with his life, and it is really crushed by automation technology.

Gadgets, low cost. Isn't it the only one with a large profit and a unique company that Hengdian needs?

Zhang Yifu himself did not expect that the long-troubled development direction would be answered in Mitsubishi Electric's exhibition hall, and Oda Kiri next to him was still carefully advocating products, and Zhang Yifu just wrote down these lines for future promotional slogans.

To talk about such a behemoth as a supercritical unit. Maybe there is still a long way to go, but microcomputer protection. Once you master the most advanced scientific algorithms, it may not take long to stand on top of the world.

When Xiao Tian Che was tired of selling and went to accompany others, Chang Siping turned around and said: "Yifu, this direction can indeed be tried, but I really can't help too much." The difference in majors is too big, and Changjiang is more suitable. ”

"Don't, the key to this is that you are old!" Zhang Yifu laughed excitedly.

"What do you say?"

Zhang Yifu asked: "Let me ask you, if we make a microcomputer protection device that is exactly the same as Mitsubishi, can we immediately sell it on the market for money?"

"How is this possible? Such a critical piece of equipment. It has to be inspected for safe operation, otherwise who will buy it?" Chang Siping shook his head and said, "Mitsubishi's product can be sold only if it has a reason to take out the previous operation number." ”

"So, we also need to operate safely, how?"

"Take it to power plants and substations for experiments!"

"How do you take it, why did the power plant agree? I will send it over or send it to Xiaofei. ”

"You don't have this qualification, you have to contact the students!" Chang Siping said with a beautiful smile.

Speaking of this, he was stunned for a moment, but instantly understood, pointed at Zhang Yifu and scolded with a smile: "Okay! Dig such a big hole!"

"Haha, so, you have to have your support in this matter. Zhang Yifu also laughed and said, "Many of your students are in important positions in provincial bureaus and power plants. ”

"Easy to do, easy to do. Chang Siping said, "But I am responsible, and I will never promote unreliable products for personal interests, this idea is very good, but I am ugly to say that the quality is not good, and the power research institute is not inspected, I can't recommend it." ”

"Of course, of course! That's why I said at the beginning, do I want you to check it!"

"Okay!" Chang Siping was really speechless, and shook his head helplessly, "Being a cadre is different, it's all calculations!

Chang Siping's words are also a pun, and what he said may not be just about microcomputer protection.

Chang Siping and Chen Yanrui settled in Hengdian, bringing reputation and prestige at the same time, the innate advantage of its protégés all over the world is more practical, the vast majority of equipment in the power system, must go through the inspection of safety production before there will be a market, especially the new and expensive thing of microcomputer protection, which is absolutely good enough, but no one dares to use it first.

Okay, let's let Chang Lao Chen come forward and contact the former students to do a favor in the trial operation of your power plant?

This is by no means a breach of discipline, but rather a state-sponsored thing. Zhang Yifu is right, in order to prosper the system, the national level is very encouraging such innovation and experimentation, and very much hopes to make a breakthrough in technology and products, but after this matter reaches the grassroots level, due to the thankless effort, if you want to implement it, you will undoubtedly have to do enough work in the power plant and the provincial bureau.

But now I often go here for a pestle, and I don't need any work anymore, and I'm done with a phone call.

Step by step to catch up with the world's first-class, let's start here. (To be continued......)