It should be noted that series compensation is used for AC power transmission and has nothing to do with DC power transmission. Moreover, there is no DC power transmission project in the country that can be founded at this time. Large-scale ultra-high voltage DC power transmission projects will be built for the future Sanxi power transmission.

Although everyone is familiar with communication and DC, before Zhang Yifu entered the electric hospital, he asked himself like many people-

What exactly is AC power? Why not use DC power that looks very direct?

This is actually no wonder that others are. It is just blame for the power generation principle of most of our generators. The impeller constantly rotates and cuts the magnetic inductor wire to generate electricity. Such electricity is destined to be transformed. During the power generation process, as the magnetic field rotates, the angle, size, and even positive and negative, they are transformed at an inherent frequency with a sinusoidal frequency. The peaks and troughs are like giant breasts and squids. This is AC power. my country's standard is 50hz, which means that such transformations are 50 times a second. The power generation and substation equipment and transmission networks are based on this standard.

Therefore, this has prompted that most of the relevant electrical equipment are now manufactured according to AC power standards, and DC power is completely another system.

Moreover, this situation is difficult to shake because the generator principle is so unshakable. Of course, there are also DC generators that are "playful". In principle, this is still the same set. It is just by adding some links and means to make the exported DC power. It is of little significance to the power generation industry from the perspective of cost and efficiency.

So in this environment, almost everything around us is AC, and every household appliance is designed according to 220v and 50hz, and the principle determines the application.

It is precisely because of the principle of alternating current that during long-distance transmission, as the current in the line continues to change, a transformed magnetic field is generated in reverse. The relationship between electricity and magnetism is always so subtle. Love and kill each other.

Is it over? Of course it's not over. Electromagnetic induction has just begun. This magnetic field will also generate induced current to suppress the current in the line. Although this part of the current is insignificant compared to the mainstream transmission, it still sacrifices some electricity. The longer the line, the more sacrifices it will be, the lower the efficiency will be.

This is the biggest culprit that hinders AC power transmission.

Of course, the inherent resistance of copper wires in transmission lines will also cause power loss, but copper is the most scientific and efficient choice. In the current scope of materials science, there is no room for making a living.

But in the field of electromagnetics, we still have room.

The obstacle caused by this inductance is called inductive reactance. It is the same as alternating current. Its angle and size are constantly changing, with sine changes, and breasts and buttocks.

So around 60 years ago, a big brother thought of another disgusting obstacle in the power transmission process with this damn feature. Capacitors and capacitors are actually the basic principles of batteries, two boards. An electric field is generated in the middle, which is another complex concept. Although I have talked about physics in high school, maybe the physics teacher has not fully understood it.

Abandoning the complex electromagnetic knowledge in the middle, if capacitors are added to the transmission line, something that hinders the transmission of electrical energy, is also called capacitive resistance.

Inductive resistor + capacitive resistor + copper wire resistance, the three brothers gather together, and the culprits that hinder the transmission of electricity will be the same.

After introducing the capacitor, the guy 60 years ago couldn't help but open his mind. Assuming that the capacitance reactance caused by the capacitor is in the opposite state to the inductor caused by the inductor, everyone is negative and negative. Will they be honest? The two of them are both defeated, so do they have no time to hinder power transmission?

The big brother, who had a big brain, thought of an amazing fact without any experiments. As a little genius in physics, he immediately thought of the capacitance voltage lag current 90° and the inductance voltage leading current 90°. A simple sin and cos differential based on basic electrical principles reveals all this.

This is simply a sacred gift from the Creator. One exceeds 90° and the other falls 90°. The addition is exactly 180°, which is completely opposite! People almost don’t need to add any complicated technical means, and these two brothers can be eliminated by nature!

It can be imagined that when the inductor voltage is at its peak, the capacitance voltage is just in the trough, and 50 round trips in a second are always so coordinated that the Creator helps you control everything.

In addition, adding capacitors to the line is such a breeze and cheap thing! It will hardly affect the transmission! Connect it in series to compensate for that damn inductor!

Therefore, the term [Series Compensation] is born. Series Compensation is also called reactive compensation, because the whole process does not do work, and is a kind of compensation based on the principle of electromagnetic electric field, which is equivalent to [Inductor] saying I punched you, [Capacitor] saying I returned you, and then everyone left satisfied. Although no one hits anyone, this matter was solved. On the other hand, if there is no [Capacitor] accepting this punch verbally, no one will talk about [Inductor], and this punch will be really hit, and the power transmission will cause loss.

Academic masters also have spring, and they can save the world by relying on theoretical physics!

If it is still too abstract, we can give an inappropriate but intuitive example. Everyone knows that the ocean has tidal phenomena, that is, waves. This phenomenon is caused by the gravity of the moon. The satellite on our heads has insignificant gravity for every drop of sea water during the continuous rotation. When they gather together, tides form. Because the rotation of the moon is regular, the tides are also regular and have regular fluctuations.

So is there a silly way to curb the tide without blowing up the moon or hurting Sister Chang'e?

The theory tells us that of course there is, that is, to recreate a moon, on the same orbit as the current moon, moving along the same orbit at the same speed and period, with only a little difference. They are always one side of the sky. Assuming that the rotating orbit is a circle, they must be at a point that is always opposite.

In this way, their influence on every drop of water in the ocean is in the opposite direction forever.

When the mass of this artificial moon is exactly the same as the standard moon, there will be no tides in theory.

I'm afraid only the Creator can do this.

Interestingly, in the electromagnetic world, the Creator is quite generous. Although he has made inductors disgusting people, he also gave you a chance. If you can discover the most interesting part of it, it will be a wealth.
Chapter completed!