Shulou(Shulou.com)06/02 Report--

This article mainly introduces what interface dc in refers to, which has certain reference value and can be used for reference by friends who need it. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

Dc in refers to power interface, that is, power plug connection; DC in interface is DC voltage input port, DC current is also known as "constant current", and constant current is a kind of DC current, which is DC with the same size and direction.

Dc in refers to the power interface, DC power interface.

DC-IN is a DC input line.

Direct current (Direct Current, referred to as DC), also known as "constant current", constant current is a kind of direct current, which is constant in size and direction. It was discovered by Edison.

In DC circuit, electrons are formed from cathode, negative pole and negative magnetic pole, and move to anode, positive pole and positive pole. However, physicists define direct current as the movement from the positive to the negative.

Extended data:

The advantages of direct current

The main results are as follows: 1. When transmitting the same power, the wire used in HVDC transmission is only 2pm, 3pm, 1ax 2 of AC transmission.

DC transmission adopts a two-wire system with earth or sea water as the return line. compared with the three-wire three-phase AC transmission, under the conditions of the same cross-sectional area and current density of the transmission line, the same electric power can be transmitted even without considering the skin effect, while the transmission lines and insulation materials can be saved by 1x3.

2. In the cable transmission line, there is no capacitive current in DC transmission line, but there is capacitive current in AC transmission line, which causes loss.

Because the coaxial capacitor is formed between the cable core wire and the earth, the power consumption of AC high voltage transmission line is 2.6 × 107kw/h per kilometer per year. In DC transmission, because the voltage fluctuation is very small, there is basically no capacitive current added to the cable.

3. In HVDC transmission, the AC systems on both sides do not need to operate synchronously, but AC transmission must operate synchronously.

In long-distance AC transmission, the phase of the current will produce a significant phase difference between the two ends of the AC transmission system; although the frequency of the AC current of each grid-connected system is unified as 50HZ, it often fluctuates.

These two factors cause the AC system to not run synchronously, which needs to be adjusted by a complex compensation system and highly comprehensive technology, otherwise a powerful circulating current may form in the equipment to damage the equipment, or cause a power outage of non-synchronous operation.

Thank you for reading this article carefully. I hope the editor can share what interface content dc in refers to is helpful to everyone. At the same time, I also hope you can support us, pay attention to the industry information channel, and find out if you have any problems. Detailed solutions are waiting for you to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.