Railway signal power voltage stabilizing device

Abstract

The invention discloses a railway signal power voltage stabilizing device, and the device comprises an analog-to-digital conversion coding unit, a decoding gating unit, a delay protection unit, a trigger gating configuration unit, a trigger unit, an error detection and discrimination unit, a protection drive unit, and an auto-coupling compensation main circuit, wherein the auto-coupling compensation main circuit comprises a compensation transformer, an autotransformer, a thyristor switch group, and a relay protection switch. The analog-to-digital conversion coding unit samples an AC power supply voltage, and the output is decoded and delayed, and then is sent to a trigger gate configuration unit to output a trigger control signal to control the on and off of a thyristor in the thyristor switch group. The voltage stabilizing device can adjust the number of partitions of an input voltage range AC voltage, and changes the compensation mode and the compensation precision. While implementing the interlocking control, the error detection and discrimination unit and the protection drive unit start / stop the protection of the thyristor switch group to control the power supply of the triggerunit according to a condition of whether a trigger gate control value is valid or not, thereby effectively strengthening the protection of the voltage stabilizing device in the working process duringan abnormality.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a voltage stabilizing device for railway signal power supplies. Background technique [0002] The existing compensated AC voltage stabilizer or voltage stabilizing device has the advantages of a wide range of voltage regulation, almost no distortion of the waveform, high efficiency of the whole machine, 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 railway signal AC power supply used for signal lighting, turnou...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the AC voltage stabilizing device used in the existing railway signal power supply, the present invention provides a railway signal power supply voltage stabilizing device, which includes an auto-coupling compensation type main circuit, an analog-to-digital conversion coding unit, a decoding gating unit, Delay protection unit, trigger gating configuration unit, trigger unit, error detection and judgment unit, protection drive unit

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