What is the power supply voltage of the common current receiving system in China?

Under normal conditions, if the voltage is 35 thousand volts and above for customers, the allowable deviation value of the power supply voltage supplied by the power supply enterprise to the user's receiving end is the sum of the absolute value of the positive and negative deviation of the voltage shall not exceed 10 of the rated value; The voltage is 10 thousand volts and below three-phase power supply customers, the power supply enterprise to the user power supply end of the power supply voltage allowable deviation is 7 of the rated value; The voltage is 220 volt single-phase power supply customers, the power supply enterprise to the user power supply terminal power supply voltage allowable deviation is +7, -10 of the rated value.

Introduction]: The power supply voltage refers to the line voltage or phase voltage at the power supply point.

Chinese name: power supply voltage.

Product Name: supply voltage

Definition: The line voltage or phase voltage at the point of supply.

Applied disciplines: electric power (first-level discipline), power system (second-level discipline).

If you see the power supply voltage of your animal building system, it should be greater than 25, because the home is reduced by 220 volts.

The voltage of domestic civil electricity is 220 volts. You need to go to the power supply station to ask the staff to know what the power supply voltage is.

In fact, the circuit in daily life is not just series and parallel, most of them are mixed, your lamp is dark and voltage and current are related, you can look at the rated voltage and current written on the bulb, any one can not reach that value is the situation that the landlord said.

What is the supply voltage of a common current receiving system? This is a problem of the power supply department, and the problem of the power supply department should be rigorous.

I'm a polytechnic.

I also studied electrical.

Cables are like what I said downstairs, but I would like to add that Tsinghua also has a cable major.

The cable industry is mainly concentrated in Zhejiang, Jiangsu, and many of them are private enterprises and private enterprises, foreign enterprises, so the wage difference is relatively large, basically foreign companies give 3000-3500

Everything else is 2000+ and I'm talking before tax!

Polytechnic Cable is not worried about finding a job every year, because there are too many employers, but the treatment is average.

Here are two recommended places One is Shanghai Siyuan, which is a cable terminal, and when I recruited last year, I said that I could get 4w in the first year

After becoming a regular employee, the annual salary is 6-8w, and it is a joint-stock enterprise, and the shareholders are all state-owned enterprises. There's also an IEWC in Suzhou, which is an American company, a sales company in China, and they mainly do sales, and my classmates have been there, and it's relatively good!

High voltage is a national first-class discipline There are academicians The most famous generally graduate to the power system power grid transformer factory (TBEA) All kinds of high and low voltage switchgear factories (such as ABB in Xiamen I have classmates), the average salary is higher than that of cable, but every year there are many more people who learn high voltage than cables, so the competition will be very fierce!

In fact, the cables in our school are interconnected with high-voltage, and many things are the same, in fact, to put it bluntly, they are all insulation technology, so when looking for a job, there is not much difference.

If you don't understand something, you can add me as a friend.

I'm working at Harbin Electric right next to our school, hehe.

The cable major is very easy to find a job, but the salary is relatively low, because the country has Xi'an Jiaotong University and Harbin Institute of Technology. Everyone in the cable factory knows it.

There are still many schools with high-voltage majors, but science and engineering are also quite strong. So it's okay to find a job, and the salary seems to be higher.

But things are not absolute!

If you don't have data, you will know if you have experienced it.

I was admitted to Changli this year, so I'll tell you about the situation this year:

There are a lot of people to brush in the power system, 98 people were interviewed, and 46 were originally planned to be recruited (except for 4 people who were submitted). Another: Circuits and Systems (Electrical Institute) plans to recruit 20-25 people, but this year the recruitment of friends has been reduced, and 5 of the 16 interviews have been brushed, with a maximum score of nearly 310, and those who have been brushed off have been sent to other schools or the school's project for a master's degree.

There are nearly 40 interviews in the school of power system automation, and the school has test papers and teachers to draw the scope of the re-examination professional textbooks, which is basically no problem by relying on more than 80, and more than 40 points across majors in other schools, which is not advantageous.

This year's science and technology power system automation major should be the most difficult year in the past 8 years, more than 300, 122 online, 98 interviews, 46 originally planned, at least 20 places in the school (the school's initial examination score is low through the re-examination of the professional course to pull the score back), the other schools this year do not have more than 325 points of hope (the premise is that people with about 325 points in the re-examination professional course to ensure more than 70 points and above, the average of the school's power system analysis is about 80).

I don't know what the situation will be next year, if it is as hot as this year, then there will be little chance of spine lz adjustment.

The professional number is OK, not Changsha Institute of Technology in general, it is not recommended to apply for the first voluntary report, as you said yourself, you can apply for a better school first, and you can consider adjusting if you can't pass the exam. For example, 34 schools, there is still a lot of hope. As long as you have about the same score.

There is no absolute judgment in looking for a job, even if you Tsinghua University and Peking University are ready to change, you may not be able to find a job, the key is to look at yourself, it is not a problem to study hard and work hard, and the re-examination teacher is generally not so difficult for students, what are the benefits of blacking you, hehe.

Harbin Institute of Technology is stronger in this direction. Harbin Institute of Technology is one of the 88 national key universities, 985 engineering colleges and 211 engineering colleges. Harbin Institute of Technology, formerly known as Harbin Institute of Electrical Engineering and Harbin University of Science and Technology, is just an ordinary institution.

It must be the University of Technology What is the use of being strong, when looking for a job, I recognized 211 and 985, the University of Science and Technology is nothing, you are admitted to the brother, and my brother regrets it, my classmate was admitted last year, but he didn't go, continue to do it haha It is recommended that the University of Technology, just look at the employment of the University of Technology.

If you can go to the University of Technology, it is recommended to go to the University of Technology.

The high voltage of Harbin Institute of Technology is very good, but the school is not 211 and 985, and the teachers of the current University of Technology are basically from Harbin Institute of Technology, so it is about the same, but the University of Technology is better than the University of Technology.

No matter what others think, it's still good for Harbin Institute of Technology.

The strength of this major science and technology (Harbin Institute of Electrical Engineering) can be on an equal footing with the University of Technology, but the score is lower than that of the University of Technology because of the ...... brand

So they all chose something else.

But it's still good to be able to go to the University of Technology or because of the brand, and there are 211 985. It's all a bargaining chip for future applications.

Science and Technology is a merger of three schools, three schools are Harbin Institute of Electrical Engineering, Harbin University of Science and Technology, and what school, the most awesome of these three schools is Harbin Institute of Electrical Engineering, two days ago just immortal Wang Daheng is the original dean of the Institute of Electrical Engineering, electrical appliances are the main major of Harbin Institute of Technology, and now the only academician Lei Qingquan is a major in electrical appliances, which is by studying high voltage and insulation technology.

If you can go to the University of Technology, you can go to the University of Technology.,You don't know what kind of advantage 211 and 985 are without personal feelings.,Hey。。。

If you want to enter the power system in the Northeast in the future, then I recommend another school to you, Northeast Electric Power University, although the strength of high voltage is not as good as that of science and technology and the University of Technology, but TEPCO's network advantage within the Northeast Bureau is incomparable to that of science and technology, and sometimes even the University of Technology can't, look at the resume of the director of the Northeast from the provincial bureau to the municipal bureau You can see the strong presence of TEPCO in the Northeast network. I don't know what LZ is going to test, recently the high voltage of the University of Technology is recruiting doctors, to be honest, the high voltage of the University of Technology is not a strong point, the electrical strength of the University of Technology is in the motor, and the power electronics are also OK. However, after all, the University of Technology has a 211+985 brand, which is used throughout the country and is recognized by the power grid system.

Node 1: (v1-v4-12) 1 + v1 +i = 0 (1 + 1 - v4 = 12 - i.)

3v1 - v4 = 12 - i, supplementary equation: v1 = u.

Node 1: (v1-12) 1 + v1-v2) + i = 0(1 + 1 -v2 = 12 - i3v1 - 2v2 = 12 - i, supplementary equation: v1-v2=u.

Current i=u (r1+r2+..rn), for a single resistor, the voltage across the two ends is equal to the current flowing through it multiplied by the resistance.

That is, UI=URI (r1+r2+..rn), where i is the subscript.

Good employment, this is Harry's first trump card major, most of them are in power companies, and it is difficult to enter the power system. The employment rate is around 92%, and the wage level is acceptable. This major in this school has been used as its own two guaranteed majors, and it is about 43 points in the country.

In the Northeast two books are also passable, and Shenyang University of Technology Changchun University of Science and Technology is equivalent to electricity, and the best in the Northeast two electricity from the Northeast is Northeast Electric Power University, its electrical self major in the country is higher than a 30 or so, since the fortunate entry