Circuit for triggering backup power source in traction substation to operate

Abstract

The invention discloses a circuit for triggering a backup power source in a traction substation to operate. The circuit includes a resistor R1, a comparator A1, a comparator A2, a diode D1, a variable resistor R6, an NE555 time-base integrated circuit, a delay circuit and a power source; one end of the resistor R1 is connected with the anti-phase input end of the comparator A1; the comparator A1 is connected with an anti-phase amplifier; the in-phase input end of the comparator A1 is grounded; the anti-phase input end of the comparator A1 is connected with the in-phase input end of the comparator A2; a resistor R2 is connected between the anti-phase input end and output end of the comparator A1; the delay circuit includes a resistor R5 and an electrolytic capacitor C2; the first pin of the NE555 time-base integrated circuit is grounded; the second pin of the NE555 time-base integrated circuit is connected with the sixth pin of the NE555 time-base integrated circuit; and the joint of the negative pole of the diode D1 and the NE555 time-base integrated circuit is located between a line between the second pin and sixth pin of the NE555 time-base integrated circuit. The circuit for triggering the backup power source in the traction substation to operate of the invention is used for acquiring the output signals of a main power source and generating triggering signals when the main power source outputs power outage signals, so as to control the backup power source to operate.

Description

technical field [0001] The invention relates to an electrified railway traction substation, in particular to a circuit for triggering backup power supply operation in the traction substation. Background technique [0002] Electrified railway traction substations undertake the important task of providing uninterrupted power supply for electric locomotives, and are in a very important position in the safe transportation and production of railways. Therefore, traction substations are required to have dual power sources and dual main transformers for fixed backup. Today, the switching of the main and standby power sources is done manually. The operation process is cumbersome, time-consuming and labor-intensive, and often affects the normal use of the traction substation due to untimely operation. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a circuit for triggering the operation of the bac...

AI Technical Summary

Problems solved by technology

Today, the switching of the main and standby power sources is done manually. The operation process is cumbersome, time-consuming and laborious, and often affects the normal use of the traction substation due to untimely operation.

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