Main and stand-by power source trigger device for traction substation
A traction substation, main and backup power supply technology, applied in the direction of circuit devices, emergency power supply arrangements, electrical components, etc., can solve the problems of time-consuming and laborious, affecting the normal use of traction substations, cumbersome operation process, etc., to achieve convenient operation, The effect of low cost and simple overall structure
Inactive Publication Date: 2017-02-15
袁云秀
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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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[0019] like figure 1 As shown, the main and standby power trigger device of the traction substation includes resistor R1, resistor R3, resistor R4, comparator A1, comparator A2, diode D2, variable resistor R5, NE555 time-base integrated circuit, rectifier filter circuit and power supply . Among them, comparator A1 and comparator A2 both adopt LM358 chip. One end of the resistor R1 is connected to the inverting input end of the comparator A1. The non-inverting input terminal of the comparator A1 is grounded, and a resistor R2 is connected between the inverting input terminal and the output terminal of the comparator A1, and the comparator A1 is connected as an inverting amplifier. The rectification and filtering circuit includes a diode D1 and an electrolytic capacitor C1. The anode of the diode D1 is connected to the output terminal of the comparator A1, and its cathode is connected to the non-inverting input terminal of the comparator A2. The anode of the electrolytic capa...
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The invention discloses a main and stand-by power source trigger device for a traction substation. The device is composed of a resistor R1, a comparator A1, a comparator A2, a diode D2, a variable resistor R5, an NE555 time-based integrated circuit, a rectifier filter circuit and a power supply. One end of the resistor R1 is connected with an inverting input terminal of the comparator A1; a non-inverting input terminal of the comparator A1 is grounded; and a resistor R2 is connected between the non-inverting input terminal and the output terminal. The comparator A1 is connected with an inverting amplifier. A first pin of the NE555 time-based integrated circuit is grounded and a second pin is connected with a sixth pin of the NE555 time-based integrated circuit. A connecting part of the negative electrode of the diode D2 and the NE555 time-based integrated circuit is arranged at the line between the second pin and the sixth pin of the NE555 time-based integrated circuit. During application, a trigger signal is generated when the main power source outputs an outage signal so as to control the stand-by power source for being put into practice, so that normal usage of the traction substation is guaranteed.
Description
technical field [0001] The invention relates to an electrified railway traction substation, in particular to a main and backup power trigger device for 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 trigger device for main and standby power supplies in traction...
Claims
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IPC IPC(8): H02J9/06
CPCH02J9/061Y02B70/30Y04S20/20
Inventor 袁云秀
Owner 袁云秀