Partitioning auto-compensation alternating current voltage stabilization control method

Abstract

The invention discloses a partitioning auto-compensation alternating current voltage stabilization control method. The method is realized by an alternating current voltage stabilizer comprising a auto-compensation type main circuit, a sampling comparison unit, a time delay protection unit, a trigger gating control unit, a trigger unit, an error detection and judgment unit and a protection drivingunit; the auto-compensation type main circuit comprises a compensation transformer, an auto-transformer, a thyristor switch group and a relay protection switch; the sampling comparison unit performs voltage sampling on an alternating current power supply voltage and outputs a trigger gating control value; the trigger gating control unit outputs a trigger control signal according to the delayed trigger gating control value; and the trigger unit controls on / off of thyristors in the thyristor switch group. According to the alternating current voltage stabilization control method, while interlocking control is realized, the protection on the thyristor switch group is started / stopped according to whether the trigger gating control value is effective or not by the error detection and judgment unit and the protection driving unit; a power supply of the trigger unit is controlled; and the protection for the abnormal working process is effectively enhanced.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a method for controlling AC voltage stabilization with partition auto-coupling compensation. Background technique [0002] The existing compensated AC voltage stabilizer has the advantages of wide voltage stabilization range, almost no waveform distortion, high overall efficiency and strong load adaptability. The principle is to automatically control the switching of different winding coils of the primary winding on the compensation transformer according to the level of the input voltage, using the ratio relationship between the primary side working winding and the secondary winding, or by adjusting the voltage applied to the primary winding , providing bidirectional and multi-level voltage compensation, so as to achieve the purpose of voltage regulation and stabilization. [0003] The disadvantage of the existing compensated AC voltage stabilizer is that when the motor i...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the existing compensating AC voltage stabilizer, the present invention provides a method for controlling AC voltage stabilization with partition auto-coupling compensation, including:

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