CN214954013U - Railway power through cable line circulation monitoring device and system - Google Patents

Abstract

The utility model provides a railway electric power link up cable run-through loop current monitoring devices, include: the circulating current acquisition module is arranged at a grounding end on one side of the railway power through cable line; the background monitoring module is arranged in the monitoring room; the processing module is connected with the circulation collection module and the background monitoring module; and the time synchronization receiving module is respectively connected with the circulation collection module, the background monitoring module and the processing module. The utility model discloses to the ground current real-time supervision among the railway electric power link up cable run-through cable line, realize the comprehensive monitoring to cable state among the railway electric power link up cable run-through cable line, establish cable comprehensive fault early warning mechanism, the emergence of prevention cable short circuit, ground fault reduces the probability of occurence of failure.

Description

Railway power through cable line circulation monitoring device and system

Technical Field

The utility model belongs to the technical field of intelligent monitoring, concretely relates to railway electric power link up cable run-through monitoring devices and system.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The railway power supply system in China adopts a power supply mode of a power through line, and consists of a primary load power through line and a comprehensive load power through line, wherein the two power through lines adopt a single-core cable power supply mode. At present, the traditional manual mode is adopted on a high-speed rail to periodically carry out grounding circulation patrol, 2 box transformers are patrolled one day, a large amount of personnel are needed to go to site survey, the working strength of the personnel is high during the site survey, the time is tight, the task is heavy, the patrol is needed to be carried out at skylight points at night, the skylight point time is short, and therefore a large amount of manpower, material resources and time are needed to go to patrol and survey.

Based on the above, real-time monitoring of the circulation of the railway power through cable line is urgently needed, a comprehensive fault early warning mechanism of the cable line is established, and the probability of accidents is effectively reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a railway power link up cable run-through cable circuit circulation monitoring devices and system to the ground current real-time supervision among the railway power link up cable run-through cable circuit, realizes the comprehensive monitoring to cable state among the railway power link up cable run-through cable circuit, establishes cable comprehensive fault early warning mechanism, prevents cable short circuit, ground fault's emergence, reduces the probability that the occurence of failure.

According to some embodiments, the utility model discloses a first scheme provides a railway electric power link up cable run-through monitoring devices, adopts following technical scheme:

a railway power through cable line circulation monitoring device, comprising:

the circulation collection module is arranged at a grounding end on one side of the railway power through cable line and is used for collecting and recording the grounding circulation in the railway power through cable line;

the background monitoring module is arranged in the monitoring room and used for monitoring the slowly-varying numerical value of the grounding circulation in the railway power through cable line in real time and providing effective technical support for a railway power supply system;

the processing module is connected with the circulation acquisition module and the background monitoring module and is used for analyzing and processing the grounding circulation acquired by the circulation acquisition module;

and the time synchronization receiving module is respectively connected with the circulation acquisition module, the background monitoring module and the processing module and is used for keeping the time consistency of the circulation acquisition module and the background monitoring module.

As a further technical limitation, the other side of the railway power through cable line is connected with the ground wire through a sheath protecting device.

As a further technical limitation, the circulating current collection module adopts an A/D current collector.

As a further technical limitation, the processing module includes an a/D signal converter, a data processor, and a controller.

Further, the controller adopts a single chip microcomputer, a DSP, an FPGA or a PLC.

As a further technical limitation, the processing module is connected with the circulation collection module, the background monitoring module and the time-setting receiving module through wired communication or wireless communication.

Furthermore, the wired communication adopts optical fibers, a CAN bus or RS485, and the wireless communication adopts Wi-Fi, ZigBee, Bluetooth or RFID.

As a further technical limitation, the railway power through cable line circulation monitoring device further comprises an interface module connected with the background monitoring module, and the interface module is used for realizing the on-site data updating of the background monitoring module.

As a further technical limitation, the railway power through cable line circulation monitoring device further comprises a power module which is respectively connected with the processing module, the circulation acquisition module, the background monitoring module and the time synchronization receiving module and provides required electric energy for normal work of each module.

According to some embodiments, the utility model discloses a second aspect provides a railway electric power link up cable run-through monitoring system, has adopted the railway electric power link up cable run-through monitoring devices in the first aspect.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a ground current among the railway power link up cable run-through is gathered in real time to the circulation collection module, realizes the comprehensive monitoring to cable state among the railway power link up cable run-through under the effect of processing module and backstage monitoring module, establishes cable comprehensive fault early warning mechanism, prevents the emergence of cable short circuit, ground fault, reduces the probability that the accident takes place; and simultaneously the utility model discloses in added to the time tick receiving module, further guaranteed the uniformity of circulation collection module with backstage monitoring module time, improved the accuracy of monitoring result.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a schematic structural view of a railway power through cable line circulation monitoring device in the utility model;

fig. 2 is an installation schematic diagram of the railway power through cable line circulation monitoring device in the utility model.

The specific implementation mode is as follows:

the present invention will be further explained with reference to the accompanying drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present invention, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only the terms determined for convenience of describing the structural relationship of each component or element of the present invention, and are not specific to any component or element of the present invention, and are not to be construed as limiting the present invention.

In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and may be fixedly connected, or may be integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.

In the case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

Example one

The embodiment introduces a railway power through cable line circulation monitoring device.

The railway power through cable line circulation monitoring device shown in fig. 1 and 2 comprises a circulation acquisition module, a background monitoring module, a processing module, a time synchronization receiving module, an interface module and a power supply module. One side of the railway power through cable line is connected with a ground wire through a sheath protection device, and the other side is directly provided with the device in the embodiment at the grounding end, so that the gradual change numerical value of the sheath grounding circulation current is monitored.

When the sheath insulation sleeve of the metal sheath of the cable has a ground fault, a circulation is formed between a fault point and a direct grounding side and the ground, the grounding circulation value of the cable line sheath changes, and the conditions of the existence of multipoint grounding of the sheath, the aging degree of the cable, the size change of the core load and the like are reflected, so that an effective technical support is provided for the safe operation and the efficient operation and maintenance of the railway power supply system, and the automation and the intelligentization level of the operation and maintenance management of the railway power supply system are improved.

Specifically, in combination with the railway power through cable line circulation monitoring device in the embodiment, the processing module is started, an instruction for collecting the grounding circulation is sent to the circulation collection module, and the circulation waveform is recorded according to the preset circulation collection module. The time synchronization receiving module ensures the consistency of the background monitoring module and the circulation collection module in the device in time precision. And data of the circular current waveform is uploaded in real time under the action of communication among the modules. The interface module is connected with the background monitoring module, so that local data updating on the background monitoring module through an external computer is guaranteed. The power module supplies power to each module, and the power module can adopt an alternating current power supply or a direct current power supply.

In this embodiment, the interface module adopts a USB interface, and directly realizes data information transmission and exchange with the background monitoring module.

In the embodiment, the circulating current monitoring module adopts an A/D current collector.

In this embodiment, the time synchronization receiving module adopts a GPS time synchronization device.

By combining the structure introduced in the embodiment, the railway power through cable line circulation monitoring device can realize the following functions:

1. realizing the on-line real-time monitoring of the railway power through cable circuit circulation;

2. data acquisition and transmission are completed through an embedded hardware system;

3. the system has a clock synchronization function (a time synchronization receiving module), and when an external satellite time synchronization signal exists, the time synchronization error is less than 100 ns;

4. the processing module can realize transient overrun monitoring on the grounding current, latch and report the transient overrun monitoring, and provide a reference index for the operation condition of the cable;

5. the processing module is set to automatically alarm for standard exceeding or abnormal change;

6. the interval positioning function of the abnormal grounding point of the high-voltage cable metal sheath;

7. the system has a local data updating function (interface module).

The railway power through cable line circulation monitoring device in the embodiment realizes the fault monitoring function of the railway power through cable line and meets the requirement of analysis of fault reasons of the through cable, realizes real-time monitoring and multipoint ground fault early warning of the railway power through cable line ground circulation, replaces the conventional manual mode of regular ground circulation patrol, greatly lightens the labor intensity of field measurement, improves the system maintenance efficiency, reflects the conditions of existence of multipoint grounding of the sheath, cable aging degree, core load size change and the like through gradual change numerical monitoring of the sheath ground circulation, greatly improves the efficiency of analyzing and searching the through cable fault, and provides powerful guarantee for safe, reliable and stable operation of a railway power supply system.

It should be noted that the railway power through cable line circulation monitoring device in the present embodiment is only modified with respect to the composition and connection relationship of the hardware components, and does not involve modification of the computer program itself. Realize the real-time supervision of signal through processing module and belong to prior art, the utility model discloses only the signal real-time supervision function of having adopted prior art in monitoring function's realization. The present invention does not make any improvements in the software that implements this function, which should be known to those skilled in the art.

Example two

The embodiment introduces a railway power through cable line circulation monitoring system.

A railway power through cable line circulation monitoring system adopts the railway power through cable line circulation monitoring device introduced in the first embodiment. The specific structure of the railway power through cable line circulation monitoring device has been described in detail in the first embodiment, and is not described herein again to avoid repetition.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims (10)

1. Railway electric power link cable circuit circulation monitoring devices, its characterized in that includes:

the circulating current acquisition module is arranged at a grounding end on one side of the railway power through cable line;

the background monitoring module is arranged in the monitoring room;

the processing module is connected with the circulation collection module and the background monitoring module;

and the time synchronization receiving module is respectively connected with the circulation collection module, the background monitoring module and the processing module.

2. The railway power feedthrough cable loop current monitoring device of claim 1, wherein the other side of the railway power feedthrough cable is connected to ground through a sheath guard.

3. The railway power through cable line circulation monitoring device as claimed in claim 1, wherein the circulation collection module employs an a/D current collector.

4. The railroad power through-cable loop current monitoring device of claim 1, wherein the processing module comprises an a/D signal converter, a data processor, and a controller.

5. The apparatus for monitoring railway power through cable loop current as claimed in claim 4, wherein the controller is a single chip, DSP, FPGA or PLC.

6. The railway power through cable line circulation monitoring device as claimed in claim 1, wherein the processing module is connected with the circulation collection module, the background monitoring module and the time-setting receiving module through wired communication or wireless communication.

7. The railway power through-cable line circulation monitoring device as claimed in claim 6, wherein the wired communication employs optical fiber, CAN bus or RS485, and the wireless communication employs Wi-Fi, ZigBee, Bluetooth or RFID.

8. The railway power through-cable loop current monitoring device as claimed in claim 1, further comprising an interface module connected to the background monitoring module.

9. The railway power through cable line circulation monitoring device as claimed in claim 1, further comprising a power module respectively connected with the processing module, the circulation collection module, the background monitoring module and the time-setting receiving module.

10. Railway power through cable route circulation monitoring system, characterized in that a railway power through cable route circulation monitoring device according to any one of claims 1-9 is used.

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