Series reactor :

installed in the capacitor loop, for control the impulse current when capacitor power-on, at the same time, form the harmonic loop with capacitor bank, to control the system harmonic increase and voltage waveform distortion.

Shunt reactor : in the super high voltage long distance power transmission system, shunt reactor is connected in the 3rd coil of the transformer. Used for capacitve charging current of compensation line, control the system voltage from increase and operation over voltage, to reduce fault current to permissive value, protect the connected equipment afterwards.

Current limit reactor :

connected in series in system, increase system impedance, control short circuit current when fault, make fault current to permissive value, protect the connected equipment afterwards.

Filter reactor :

connected in series in capacitor loop, form a harmonic circuit, to make it resonance at certain frequency, filtering certain high order harmonic current, to provide low impedance path for some order harmonic, prevent harmonic from into the system. At the same time to realize the power system reactive compensation and limit inrush current when capacitor connect into the system.

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