Protecting power equipment through relays is the role of relay protection. Although everyone is trying their best to avoid accidents, accidents always happen. Through automatic judgment and taking a series of measures in the shortest time to selectively cut off the fault that should be cut off and protecting power equipment is a link that cannot be ignored in the power industry... This is like an insurance. Whether it is a priceless power generation equipment or an ultra-high voltage power grid, once an accident occurs, the relay device is their initial and final insurance, to avoid all paralysis and avoid serial explosions.

Zhang Yifu patted Chang Siping and smiled: "I turned around and this direction is more appropriate."

"You said "Hangdang?" Chang Siping quickly shook his head, "I don't know much about the resignation insurance, and Chang Jiang still understands a little."

"The principle is not that complicated. You will understand as soon as I say it." Zhang Yifu pointed to one of the small boxes and gestured, "This is a judgment circuit. Do you know the binary?"

"Know."

"Okay, this screen cabinet is a series of binary judgments, you see." Zhang Yifu gestured along the vein, "Just imagine that these boxes are not boxes, but represent ‘0’ or ‘1’. There are more than a dozen boxes on this wall. After receiving the power parameters, they judge 0 or 1, and finally exit and give 0 or 1. The ‘0’ is normal. If you don’t operate, there is a problem. You have to trip, and this is rescuing."

"that's all?"

"That's it." Zhang Yifu added, "This screen cabinet is a relay for power equipment. It sits at 0 or 1 every moment. Once the power signal fluctuates, they will determine whether there is a problem with the equipment. If it is not a problem with the equipment, it will not operate. If it is a problem with the equipment, it will pull the equipment. Many such relay devices form a relay protection for a power plant. If there is a problem with any point, that point will immediately call the alarm and trip, and other places will operate normally."

"I roughly understand." Chang Siping nodded and pondered, then pointed to the small box and said, "Is it very knowledgeable here?"

"It's not that deep. He is a transistor-type, and there is a set of logical judgments in the box." Zhang Yifu said and pointed his head. "I probably have a clear understanding of the logical judgment part, and I have studied all kinds of algorithms."

"I understand what you mean." Chang Siping frowned, "Why do this? The direction behind the economizer?"

"You can try it."

"This is a completely new direction for Hengdian, and I have limited personal understanding."

"Does it be understood by other things?" Zhang Yifu smiled, "This matter can be connected with the projects of Chang Jiang and Chen Yanrui later, because it is basic hardware. You must check it."

"Relay protection? How to connect it with automation?" Chang Siping was confused.

While chatting, Oda Choi saw the two of them staying in front of the relay device for a long time, and followed them up: "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 and the most advanced microcomputer protection."

Oda Choi said, leading the two to the booth next to him.

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

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

Oda Choe didn't stop and pulled the two to a modern-looking screen cabinet. The screen cabinet was embedded in it rather than a box, which was placed horizontally, about the size of a computer host, and a small display screen.

"This is a fully digital and automated microcomputer protection device we just developed." Oda Choi proudly introduced, "It is different from the traditional judgment method. Microcomputer protection can transform power parameters into digital signals, and perform the most accurate calculations through the computer to respond. Whether it is reliability, selectivity, speed or sensitivity, it has cross-generational significance."

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

Chang Siping immediately understood that power plant automation, to put it simply, it is undoubtedly to convert various original electrical, pressure, temperature, speed and other parameters into numbers and incorporate them into computer systems for management. There are too many difficulties here and it requires a long-term development. Microcomputer relay protection is relatively special, only a small amount of data is required to analyze and provide the most basic response.

Think more. In the transistor era, the main difference between domestic equipment and imported equipment is reliability. Due to the gap in manufacturing process level, domestic equipment is inferior to imported equipment in terms of sensitivity and response accuracy. For example, if the environment is a little wet in summer, it may cause domestic equipment to move incorrectly when it should not be operated. When there is a real problem, domestic equipment may refuse to move when it should be operated because its reliability is too low.

But when entering the microcomputer era, everything is turned into a digital signal, and the computer decides whether it should be done or not. The main consideration is algorithm and software programming problems. Having more advanced and accurate algorithms will be the core of competitiveness.

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

Faced with all this, Chang Siping was still thinking, how long will it take for Chang Jiang to create some signs of such a high-end and sophisticated thing?

In fact, he was completely thinking the wrong direction. The real algorithm expert, the programmer, was standing next to him.

The microcomputer protection algorithm in front of you is completely an antique from the last century for Zhang Yifu. In the future great development, future generations have long summarized more precise and complex algorithms and logics.

"Jodaki, what is the market price of such a microcomputer protection device?" Zhang Yifu asked, covering up the greed in his heart.

"It's hard to give an accurate number. Decided based on the procurement scale and exchange rate, I can only say it roughly." Oda Kei thought about it and said, "In terms of RMB, it's within a million."

Zhang Yifu was so excited that he wanted to laugh. Now this thing is definitely high-end and so it is reasonable to sell for one million yuan, but in the future this thing will be a bargain price and can be handled with a hundred thousand yuan.

This gap is not simply ten times. Including currency depreciation, inflation and other things, the profit gap has reached an incredible level.

Perhaps the topic of power plants and grid automation is too big for the current constant voltage, 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 may have a simple technical principle. Others can copy it by using some tricks. It is useless to protect it if it is not a good thing. It is a real automation technology to crush it.

The gadget has low cost and high profits. It is not what Hang Electric needs?

Zhang Yifu himself did not expect that the development direction that had been troubled for a long time actually came to an answer in the exhibition hall of Mitsubishi Electric. Odagiri was still advocating the products seriously. Zhang Yifu happened to write down all these lines and use them for future slogans.

If you want to talk about a behemoth like a supercritical unit, there may be a long way to go, but once you master the most advanced scientific algorithms, it may not take long to stand at the top of the world.

When Oda Chee was tired of selling, he went to accompany others. Chang Siping turned around and said, "Yao, you can really try this direction, but I really can't help too much. The difference in professionalism is too big, and Chang Jiang is more suitable."

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

"I? What do you say?"

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

"How is this possible? Such a critical equipment must be tested for safe operation, otherwise who would buy it?" Chang Siping shook his head and said, "This product of Mitsubishi can be used to take out previous operating data and be sold with reasonable evidence."

"So, we also need safe operation inspection, how to check?"

"Take it to the power plant and substation for testing!"

"How to get it? Why should the power plant agree? I will send it to Xiaofei."

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

Speaking of this, he was stunned and understood instantly. He pointed at Zhang Yifu and laughed and scolded: "Okay! Digging such a big hole!"

"Haha! So, this matter must be supported by your old age." Zhang Yifu also laughed, "Many of your students are in provincial bureaus and power plants who are responsible for important positions. If you speak up, this matter is easy to deal with."

"It's easy to handle." Chang Siping changed his mind, "But I have to be responsible and I will never promote unreliable products for personal interests. This idea is very good, but I said that the quality is not as good as before, and the Academy of Electrical Sciences does not have a test, so I can't recommend it."

"Of course! So I said from the beginning, do you want to check it?"

"Okay!" Chang Siping was speechless and shook his head helplessly, "It's different to be a cadre, it's all a calculating! He plotted on me at a young age!"

Chang Siping's words were a pun. What he said might not be just about microcomputer protection.

Chang Siping and Chen Yanrui joined Hengdian, bringing reputation and reputation, while his disciples' innate advantages are more practical. Most of the equipment in the power system must be tested for production safety before they can have a market, especially the fresh and expensive thing like microcomputer protection, which is definitely good enough, but no one dares to use it first.

Well, let Lao Chang and Chen come forward to contact the former students and help you test the operation in your power plant?

This is by no means a matter of destruction, but rather a matter of support from the state. Zhang Yifu said that, in order to achieve system prosperity and strength, such innovation and experiments are highly encouraged at the national level, and he hopes to make breakthroughs in technology and products. However, after this matter reaches the grassroots level, due to the thankless efforts, if you want to implement it, you will undoubtedly have to do enough work in the power plant and provincial bureau.

But now I often go here and I don’t need any work anymore. I’ll finish a phone call.
Chapter completed!