Arriving on the second floor, before stepping into the real room, Zhang Yifu could feel countless "buzzing" fan sounds, this kind of unique sound in the computer room is not many opportunities to hear in this life, with a certain mood of anticipation, he pushed open the door of the real room.

Two rows of computers are arranged in the classroom-sized room in the shape of the Chinese character "two", and in the middle of the two horizontals, are several bare-metal motherboards of different sizes and closed instruments, in order to ensure heat dissipation, although it is winter, there are several electric fans on the ground, blowing those integrated 'hosts' that have not yet been formed, which is the main source of humming.

What is very different from such a humble environment is that the excitement and excitement in Chang Jiang's eyes, as well as Chen Yanrui's 100% seriousness, are difficult to see in the eyes of people at this time.

"Oops!It's coming!!" Chang Jiang raised his head excitedly, raised his hand and pushed his slightly messy hair back, "Come on, come on, come and see!!"

Chang Jiang is like a child who has done good deeds, and he can't wait to show his parents his great achievements.

Chen Yanrui was not much better, and beckoned to Zhang Yifu: "It's time to come!

Zhang Yifu walked over briskly and asked, "Just the two of you?"

"I asked them all to go back, it's inconvenient for you to come. Chen Yanrui picked up the towel on the table, wiped his face and then showed it to Zhang Yifu, "Look, the towels are all oil-stained, and my old face can still squeeze out so much oil." ”

Zhang Yifu smiled helplessly and walked between the two, both of whom are now sitting, Chang Jiang is operating a PC, and Chen Yanrui is guarding in front of a 20-inch TV-sized chassis.

There are several line outputs on this chassis, some of which are connected to Changjiang's computer. Others lead to the bare metal in the middle row.

"Is this our protective device?" Zhang Yifu bowed slightly, carefully looked at this "TV", the chassis is stone gray, the front is a large textbook-sized electronic screen, and there are a series of operation buttons next to it, as a microcomputer protection. His appearance is completely qualified, even beyond imagination.

"How is it possible, this is a Canadian digital simulation test instrument, used to simulate the current and voltage line parameters. Chang Jiang smiled and pointed to one of the bare metals in the middle, "That's our protection, now only the core has been completed, you see ......"

Chang Jiang pointed to this series of equipment, and told Zhang Yifu one by one, and made the equipment and wiring of this room clear first.

In simple terms. The current wiping environment is purely digital, and there is no intervention of the actual equipment fault current and voltage.

Through the Canadian digital simulation test instrument, a power system is simulated, and then the parameters of a specified line are output and communicated to the "bare metal version of the line protection device", which is incorporated into the software system for calculation and analysis, and the final results and operation reports are output on the PC operated by Changjiang.

This humble experimental environment may not even be comparable to the teaching environment of a junior college in ten years, but at this time. Perhaps the industry's top configuration for digital testing environments.

Xiang Xiaofei looked at these motherboards and wiring, as well as the buzzing fans. I only felt distressed: "Shaw, each of these things has cost a lot of money, not to mention anything else, this Canadian instrument has cost us 200,000." ”

"Is it just a simulation analysis calculation function?" asked Zhang Yifu, looking at the thing. Who would have thought that this gadget would be worth a house.

"Not only that, but it has the ability to output analog voltage and current. Chang Jiang hurriedly explained, "This simulation device is equipped with a power amplifier, which can convert the simulated digital quantity into a physical quantity and transmit it to the test prototype. In this way, for the test prototype, the actual electrical parameters are felt, including the parameters when the system is operating normally and the parameters when the equipment fails. ”

"Alright, alright...... The money that should be spent is always spent. Xiang Xiaofei was most afraid of Chang Jiang's tirade, so she only asked, "I don't understand one thing, let's take high-voltage transmission as an example, 220kv, how high is that voltage......"

She patted the instrument in front of Chen Yanrui as she spoke: "Does this thing want to release 220kV of voltage? In that case, won't this building be blown up?"

"Hehe, Xiaofei, your concern seems to be a layman. Chen Yanrui carefully explained, "Relay protection belongs to weak current equipment, at both ends of the actual transmission line, it must be equipped with a transmitter, such as 220kV AC voltage, through the guò voltage transmitter, it can be reduced to 100V AC voltage, and thousands of amperes of AC current, through the guò current transmitter can be reduced to 1 ampere or 5 amperes of current, so that it can be transmitted to the protection device." The ratio of these transmitters is called the ratio, which is remembered internally by the protective device and calculated. ”

"I see. Although Xiang Xiaofei didn't understand much, she was relieved enough, "I'm afraid that this laboratory will get high-voltage electricity, and one day I accidentally come over and turn into ashes as soon as I get close, how unjust it is." ”

"Hahaha. Several people laughed.

For Chen Yanrui and Chang Jiang, it will definitely be unhappy for an insider to be led by a layman, not to mention that this layman is a little girl in her 20s. But after the actual work, they found that this leader basically didn't have much energy, a qiē unimpeded, the little girl also respected and trusted them, giving them relatively free control of power and working environment, plus Xiang Xiaofei is really serious and willing to learn, don't put on a show, really work, after a long time, there is no problem between the two and Xiang Xiaofei, but I feel that such a boss is even better than Zhang Yifu in a certain way, no pressure after all.

"Shaw, let me tell you a few more points before we start the experiment. Chang Jiang took out a document from the table and handed it to Zhang Yifu, "The line protection design plan you gave, I simplified it a little with Mr. Chen." ”

"Of course you can, it says it can be simplified, it's too difficult to do it in one step. ”

"Mainly concentrated in the network information interaction module, as well as the DC transmission ......"

Chang Jiang said 1510, and Zhang Yifu nodded frequently, which can be regarded as recognition. The product design description he gave is indeed a little too comprehensive and tall, fully compatible with the future automation and interaction needs, and also compatible with the situation that DC transmission has not yet been popularized, appropriate simplification is a must, to put it bluntly, reduce the difficulty of technology and hardware;

Finally, when it comes to line protection, the reason why line protection is chosen as the first product is precisely because it is simpler than transformer protection and power generation protection. (To be continued......) R1292