Structural principle description
The phase-controlled arc suppression coil is also called “high short-circuit impedance type”, that is, the primary winding of the arc suppression coil in the complete device is connected to the neutral point of the distribution network as the working winding, and the secondary winding is used as the control winding by two reversely connected The thyristor is short-circuited, and the short-circuit current in the secondary winding is adjusted by adjusting the conduction angle of the thyristor, so as to realize the controllable adjustment of the reactance value. adjustable.
The conduction angle of the thyristor varies from 0 to 1800, so that the equivalent impedance of the thyristor varies from infinity to zero, and the output compensation current can be continuously adjusted steplessly between zero and the rated value.
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