Reactors are used in those equipment, and what is the function of reactors

The friends upstairs are too general, now I will tell you in detail, if you don't understand something, you can continue to ask questions.

A reactor is an electrical appliance that relies on the inductive resistance of the coil to block the change of current. According to the application, it is divided into the following types: current-limiting reactors.

It is connected in series in an electrical circuit to limit the value of the short-circuit current. Shunt reactor. Generally, it is connected between the end of the ultra-high voltage transmission line and the ground, and plays the role of reactive power compensation.

Communication reactors. Also known as a blocker. In series in a transmission line that doubles as a communication line, it is used to block the carrier signal and make it enter the receiving equipment.

Arc suppression reactor. Also known as arc suppression coil. It is connected between the neutral point and the ground of the three-phase transformer, and is used to supply inductive current when the one-phase ground of the three-phase power grid is connected to the ground, so as to compensate for the capacitive current flowing through the grounding point, so that the arc is not easy to ignite, so as to eliminate the overvoltage caused by multiple re-ignition of the arc.

Filter reactors. It is used to reduce the amplitude of ripple on the bamboo current in the rectifier circuit; It can also form a circuit with a capacitor that can resonate with a certain frequency to eliminate the voltage or current of a certain harmonic in the power circuit. Electric furnace reactor.

It is connected in series with the electric furnace transformer to limit its short-circuit current. Starter reactor. It is connected in series with the electric motor and its starting current is limited.

I don't know if you are satisfied with the above?

High-voltage transmission lines - shunt reactors;

Reactive power, filter compensation device - series reactor, shunt reactor, filter reactor;

Motor step-down start--starter reactor;

Certain electrical equipment - current-limiting reactors;

Intermediate frequency furnace, DC equipment - flat wave reactor;

Inverter - incoming reactor, output reactor.

Above and so on.

It's all confused, and now the people who are engaged in technology have regressed, the young people talk nonsense, the old men are stubborn and conservative, and technology still depends on practice and understanding.

Capacitive effects on light no-load or light-load lines to reduce power frequency transient overvoltages.

Reactors, also called inductors, are widely used in circuits, and because of the effect of electromagnetic induction in the circuit, there is a certain degree of inductance, which can play a role in preventing current changes. When a conductor is energized, a magnetic field is generated in a certain range of space it occupies, so all electrical conductors that can carry current are generally inductive.

However, the inductance of the energized long straight conductor is small, and the magnetic field generated is not strong, so the actual reactor is a solenoid form of wire winding, called a hollow reactor.

Sometimes, in order to make this solenoid have more inductance, an iron core is inserted into the solenoid, called an iron core reactor. Reactance is divided into inductive reactance and capacitive reactance, and the more scientific classification is inductive reactance.

The role of the reactor on the inverter:

In response to what you are talking about is the role of the input reactor;

It is used to limit the current impulse caused by the sudden change of grid voltage and operation overvoltage, smooth the spike pulse contained in the power supply voltage, or smooth the voltage defects generated during the commutation of the bridge rectifier circuit, effectively protect the inverter and improve the power factor, it can not only prevent the interference from the power grid, but also reduce the pollution of the power grid by the harmonic current generated by the rectifier unit.

The other two, the role of the output reactor:

The main function of the output reactor is to compensate for the influence of the long-line (50-200m) distributed capacitance, and can suppress the output harmonic current, improve the output high-frequency impedance, and effectively suppress the DV DTReduce high-frequency leakage current, protect the inverter, and reduce equipment noise. When the capacitor compensates the power, it is often affected by the harmonic voltage and harmonic current, resulting in the damage of the capacitor and the reduction of the power factor.

The role of a DC reactor:

The main purpose of the DC reactor is to limit the AC component superimposed on the DC current to a certain specified value, keep the rectifier current continuous, reduce the current pulse value, make the inverter link run more stable and improve the power factor of the inverter.

In layman's terms, the reactor Zao Mengling can suppress line interference clutter, absorb abnormal voltage shock wave energy, and smooth the output waveform. Theoretically, the use and definition of reactance carriers can be found in the encyclopedia "reactors".

The common reactors used in the power system are series reactors and shunt reactors. Series reactors are mainly used to limit short-circuit currents, and there are also higher harmonics that are connected in series or parallel with capacitors in filters to limit higher harmonics in the power grid. The reactor in the 220kv, 110kv, 35kv, and 10kv power grids is used to absorb the charging capacitance reactive power of the cable line.

The operating voltage can be adjusted by adjusting the number of shunt reactors. The ultra-high voltage shunt reactor has a variety of functions to improve the operation of the reactive power of the power system, mainly including: 1. The capacitive effect on the light no-load or light-load line to reduce the power frequency transient overvoltage; 2. Improve the voltage distribution on long transmission lines; 3. The reactive power in the line under light load is balanced as much as possible to prevent the unreasonable flow of reactive power and reduce the power loss on the line; 4. Reduce the power frequency steady-state voltage on the high-voltage bus when the large unit is parallel with the system, so as to facilitate the parallel of generators at the same time; 5. Prevent the self-excitation resonance phenomenon that may occur in the generator with long lines; 6. When the neutral point of the reactor is used through the small reactance grounding device, the small reactor can also be used to compensate the interphase and phase-to-ground capacitance of the line, so as to accelerate the automatic extinguishing of the latent power supply current, which is convenient for adoption.

The wiring of the reactor is divided into two ways: series connection and parallel connection. Series reactors usually play a current-limiting role, and shunt reactors are often used for reactive power compensation. 1. Half-core dry-type shunt reactor:

In ultra-high voltage long-distance transmission systems, it is connected to the tertiary coil of a transformer. It is used to compensate for the capacitive charging current of the line, limit the increase in system voltage and operating overvoltage, and ensure the reliable operation of the line. 2. Half-core dry series reactor:

Installed in the capacitor circuit, from the time the capacitor circuit is put into operation.

Why is a reactor connected to the circuit and what is its purpose? Today is a long time to see.

"6SN1111-1AA00-0CA0" is the order number of Siemens reactor, "28KW

65A" is the power and current parameters of this reactor.

The role of the reactor :

In the event of a short circuit, the voltage drop on the reactor is larger, so it also plays a role in maintaining the voltage level of the bus, so that the voltage fluctuation on the bus is small, and the stability of the operation of the user's electrical equipment on the non-fault line is ensured.

Extension of knowledge points:

A reactor, also called an inductor, is essentially an air-core coil without magnetic conductive material. Reactance is divided into inductive reactance and capacitive reactance.

Why is a reactor connected to the circuit and what is its purpose? Today is a long time to see.