Series reactor is a kind of electrical equipment with certain reactance value, which is made of metal wire. It is connected to the electrical circuit in series and is mainly used to limit the short-circuit current. In the innovation of duhuidian analysis, the short-circuit capacity is limited by operating the series reactor, so that some relays with insufficient breaking capacity can be used continuously. It is generally used in the power system of 35kV and below.
In order to guarantee the quiet operation of shunt capacitors, the operating voltage of the capacitors must be controlled in a proper scale, and the harmonic current flowing into the capacitors must be limited. Adding a series reactor in the capacitor is to suppress the harmonic and switching inrush current, limit the operating overvoltage, reduce the impact of switching capacitor on the power grid, and limit the harmonic on the power grid to pass through the capacitor, shield capacitor and switching switch.
Series reactors are used in power plants, power stations, industrial and mining enterprises, user distribution stations and other power systems of 63kV and below. To suppress short circuit current. The main components of electrical circuit are resistance, capacitance and inductance. The inductor has the effect of suppressing the current transition, and can make the exchange phase shift. The assembly of wound static sense with inductive induction is called reactor.
The common reactors used in power system are series reactor and parallel reactor. The series reactor is mainly used to limit the short-circuit current. It can also be connected in series or parallel with the capacitor in the filter to limit the higher harmonics in the power grid.
The series reactor is generally used for high-voltage reactive power compensation assembly, filter compensation assembly, if furnace harmonic management, frequency converter harmonic management and other series reactors can also be used for capacitance compensation cabinet, which can protect capacitor induction, suppress harmonic amplification and other series reactors, also known as lkgd, are mainly used for equipment or power harmonic management that needs to stop power factor compensation.