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A railway power transmission device

A technology of power transmission and relay protection devices, applied in emergency protection circuit devices, electrical components, indicating the existence of current/voltage, etc., can solve the problems of high cost of small current signal detection, inconvenient sensitivity adjustment, etc., and achieve low cost , easy to adjust, cost-saving effect

Active Publication Date: 2022-07-12
济宁华源热电有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a railway power transmission device, which mainly solves the problems of high detection cost of small current signals and inconvenient sensitivity adjustment in existing railway power transmission

Method used

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  • A railway power transmission device

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Embodiment

[0025] like figure 1 As shown, a railway power transmission device disclosed in the present invention includes a feeder circuit breaker 1 arranged in a traction substation for railway power supply, a relay protection device 2 connected with the feeder circuit breaker 1, and a transmission line 3, The power take-off coil 4 that takes power from the transmission line through the power supply arm of the traction network, the protection circuit 5, the rectifier circuit 6, the voltage conversion circuit 7 and the power output circuit 8 connected to the power take-off coil 4 in sequence, and the protection circuit 5 is connected. Small current signal generation detection circuit. When supplying power to the electric locomotive, the transmission line takes electricity from the traction substation, and protects the output end of the traction substation through the feeder circuit breaker and the relay protection device. The power transmitted by the transmission line is rectified and c...

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Abstract

The invention discloses a railway power transmission device, which mainly solves the problems of high detection cost and inconvenient sensitivity adjustment of small current signals in the existing railway power transmission. The device includes a feeder circuit breaker arranged in a traction substation for railway power supply, a relay protection device and a transmission line connected with the feeder circuit breaker, a power take-off coil for taking power from the transmission line through a traction network power supply arm, A protection circuit, a rectifier circuit, a voltage conversion circuit and a power output circuit are sequentially connected with the power taking coil, and a small current signal generation detection circuit is connected with the protection circuit. Through the above design, the present invention judges the power transmission state of the power transmission device by analyzing the small current signal, ensures that the power transmission device is in a safe working state, and can easily adjust the detection sensitivity of the small current signal generation detection circuit by adjusting the potentiometer. Therefore, it is suitable for promotion and application.

Description

technical field [0001] The invention relates to the technical field of railway power facilities, in particular to a railway power transmission device. Background technique [0002] The electrified railway is currently the first choice for railway construction in the world. At present, my country's electrified railway construction mileage is at the forefront of the world. With the development of the national economy and support for the western region, the development of electrified railways in remote areas such as Qinghai, Tibet, Xinjiang and Inner Mongolia has become more and more obvious. An important infrastructure for electrified railways is power transmission. [0003] In power transmission, the effective safety monitoring and protection of power transmission devices is an important guarantee for the safe operation of railways. At present, the protection principle of electric railway traction network in my country is mostly based on the difference between load current a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26G01R19/15
CPCH02H7/26H02H1/0007G01R19/15
Inventor 姜召星王贞波景运动李冠一
Owner 济宁华源热电有限公司
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