Arriving on the second floor, before entering the laboratory, Zhang Yifu could feel countless "buzzing" fans. This unique sound in the computer room has not many opportunities to hear in his life. With some expectation, he pushed open the door to the laboratory.

Two rows of computers are arranged in the classroom-sized laboratory, like the Chinese character "two". In the middle of the two horizontally are several bare metal motherboards of different sizes and closed instruments. In order to ensure heat dissipation, although it is winter, several electric fans are placed on the ground, blowing those unformed integrated "hosts", which is the main source of the buzzing sound.

What is very different from such a simple experimental environment is that Chang Jiang's eyes were filled with excitement and excitement, and Chen Yanrui's seriousness that was 100% devoted to, were difficult to see in people's eyes at this moment.

"Oh! It's really here!" Chang Jiang raised his head excitedly, raised his hand and pushed his slightly messy hair back hard, "Come on, come on, come on, come on and take a look!"

Chang Jiang is like a child who has done good deeds, unable to wait to show his great achievements to his parents.

Chen Yanrui was not much better either, so he waved to Zhang Yifu: "It's time to come! The debugging has just been completed and everything is ready!"

Zhang Yifu walked over quickly and asked, "You two?"

"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 covered with oil stains. My old face can still squeeze out so much oil."

Zhang Yifu smiled helplessly and walked between the two. Both of them were sitting now. Chang Jiang was operating a PC machine, while Chen Yanrui was staying in front of a 20-inch TV-sized chassis.

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

"Is this our protective device?" Zhang Yifu bowed slightly and looked at the "TV" carefully. The chassis was grey. On the front was a large textbook-sized electronic screen with a series of operation buttons next to it. As a microcomputer protection, its appearance was completely qualified, even beyond imagination.

"How is this possible? This is a Canadian digital simulation test instrument used to simulate current and voltage line parameters." Chang Jiang smiled and pointed to one of the bare metals in the middle, "That is our protection. Now we have only completed the core, you see..."

Chang Jiang pointed to this series of equipment and told Zhang Yifu one by one, and carefully understood the wiring of the equipment in this room.

Simply put, the current swab inspection environment is purely digital and there is no intervention of 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 to convey to the "bare-metal version of line protection device". These parameters are included in the software system for calculation and analysis, and the final results and operation reports are output on the PC machine operated by Changjiang.

This simple experimental environment may not be as good as the teaching environment of a junior college in ten years, but at this time, it may be the top configuration of the industry's digital experimental environment.

Xiang Xiaofei looked at the motherboards, wiring, and buzzing fans, and felt distressed: "Yifu. Each of these things costs a lot of money. Not to mention anything else, this Canadian instrument cost us 200,000 yuan."

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

"More than that, it has the ability to output analog voltage and current." Chang Jiang quickly explained, "This simulation simulation device is equipped with a power amplifier, which can convert the simulated digital quantity into physical quantity and transmit it to the test prototype. For the test prototype, what you feel is the actual electrical parameters, including the parameters during normal operation of the system and the parameters during equipment failure."

"Okay, okay... the money you should spend will always be spent." Xiang Xiaofei was most afraid of Chang Jiang's long speech. He only asked, "I don't understand at all. Let's take high-voltage transmission as an example. 220kv, how high the voltage is..."

She said and patted the instrument in front of Chen Yanrui: "Does this thing release a voltage of 220kv? In that case, this building will explode?"

"Haha, Xiaofei, your concern is a layman." Chen Yanrui explained carefully. "Relay protection is a weak current device. At both ends of the actual transmission line, it must be equipped with a transmitter. For example, a 220kv AC voltage can be reduced to 100v AC voltage through the voltage transmitter. The alternating current of several thousand amperes can be reduced to 1 ampere or 5 ampere through the current transmitter, so that it can be transmitted to the protection device. The proportion of these transmitters is called the ratio of the variable ratio. The protection device will remember this ratio internally and restore the real electrical quantity when calculating."

"So that's it." Although Xiang Xiaofei didn't understand much, she felt relieved enough. "I'm afraid that this laboratory will produce high voltage electricity. One day I accidentally came over and turned into ashes when I got closer. How unfair it would be."

"Hahaha." The few people laughed.

For Chen Yanrui and Chang Jiang, it is definitely unhappy for an expert to be a layman, not to mention that this layman is a young girl in her 20s. But after actual work, they found that this leader basically does not exist very much, everything is unimpeded, and the girl respects and trusts them, giving them relatively free power and work environment. In addition, Xiang Xiaofei is indeed serious and willing to learn, not pretending to be airs, and really works. Over time, there is no grudge between the two and Xiang Xiaofei. Instead, they think that such a boss is even better than Zhang Yifu to a certain extent. Is there no pressure after all?

"Yifu, I'll tell you a few more points before starting the experiment." Chang Jiang took out a piece of information from the table and handed it to Zhang Yifu. "I simplified the line protection design you gave me a little."

"Of course, it's simplified as stated above, and it's too difficult to get it done in one step."

"It is mainly concentrated on network information interaction modules and DC power transmission..."

Chang Jiang said 111 times, and Zhang Yifu nodded frequently, which was considered acknowledgement. The product design instructions he gave were indeed a bit too comprehensive and high-end, fully compatible with future automation interaction needs, and compatible with DC transmission and other unpopular conditions. Appropriate simplification is necessary. To be honest, it is necessary to reduce the difficulty of technology and hardware; to be stolen, our protection is only a little bit stronger than the protection of other brands, and we can slowly upgrade and update and sell it slowly! How can we collect tickets when we directly put the Heavenly Court on the South Heaven Gate? How can we directly abolish the Jade Emperor, and how can Erlang Shen earn the appearance fee!
Chapter completed!