CN218240277U

CN218240277U - Cable state detection device

Info

Publication number: CN218240277U
Application number: CN202220910792.6U
Authority: CN
Inventors: 康升扬; 陈实; 陈福锋; 薛明军; 李玉平
Original assignee: Nanjing SAC Automation Co Ltd
Current assignee: Nanjing SAC Automation Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2023-01-06
Anticipated expiration: 2032-04-20

Abstract

The utility model provides a cable state detection device, which comprises a switchboard module and a plurality of groups of detection modules connected in parallel; the receiving end of the switchboard module is respectively connected with each detection module; each detection module comprises a switch state module, a current sensor, an optical fiber transceiver, a micro-processing module and a dial switch; the output end of the optical fiber transceiver is connected with the switchboard module, the input end of the optical fiber transceiver is connected with the micro-processing module, the micro-processing module is in communication connection with the dial switch, the pin of the dial switch is connected with the micro-processing module, and the receiving end of the micro-processing module is respectively connected with the switch state module and the current sensor; the switching state module receives a switching value state signal of a branch where a target cable is located; the current sensor receives a current signal of a branch where the target cable is located. The utility model has strong anti-interference performance, not only can detect the state signals of a plurality of cables simultaneously, but also can realize remote monitoring; the utility model discloses simple structure, it is convenient to install, is suitable for extensive using widely.

Description

Cable state detection device

Technical Field

The utility model relates to a cable state detection device belongs to data acquisition equipment technical field.

Background

The direct current power supply and the secondary cable for the substation are a cardiovascular system of the secondary equipment of the whole substation, when the secondary cable is damaged, the function of the secondary system of the substation fails, even the safe operation of the whole power grid is threatened, and therefore, the accurate detection of the health state of the secondary cable is particularly important.

However, at the present stage, the field construction environment is severe, and the anti-interference performance is poor when the cable signals are transmitted, so that more than one slave machine needs to be configured in each screen to collect the state signals of the corresponding cables and transmit the state signals to the host machine. Not only consumes a large amount of operation expenses, but also is inconvenient to overhaul and replace the module.

Therefore, the present application provides a cable status detecting device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a cable state detection device not only can detect the status signal of multichannel cable simultaneously, can also realize remote monitoring.

For solving the technical problem, the utility model discloses a following technical scheme:

the embodiment provides a cable state detection device, which comprises a switchboard module and a plurality of groups of detection modules connected in parallel;

the receiving end of the switchboard module is respectively connected with each detection module;

each detection module comprises a switch state module, a current sensor, an optical fiber transceiver, a micro-processing module and a dial switch;

the output end of the optical fiber transceiver is connected with the switchboard module, the input end of the optical fiber transceiver is connected with the micro-processing module, the micro-processing module is in communication connection with the dial switch, and the receiving end of the micro-processing module is respectively connected with the switch state module and the current sensor;

the switching state module receives a switching value state signal of a branch where a target cable is located;

the current sensor receives a current signal of a branch where the target cable is located.

Further, the detection module comprises a power module and a communication module;

the power modules of the adjacent detection modules are connected with each other;

and the communication modules of the adjacent detection modules are connected with each other.

Further, the microprocessor module comprises a microprocessor unit and a filtering protection loop;

and the receiving end of the micro-processing unit is connected with the switch state module through a filtering protection circuit.

Further, the microprocessor module comprises a microprocessor unit and an AD circuit;

and the receiving end of the micro-processing unit is connected with the current sensor through an AD circuit.

Further, the detection module comprises a shell, and a current sensor is arranged on the shell.

Further, the current sensor is a non-invasive current sensor.

Further, the power module is externally connected with a 24V direct current power supply.

Further, the communication module comprises a CAN communication interface for connecting an external communication device in a communication manner.

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

the utility model can not only detect the state signals of the multi-path cable at the same time, but also realize remote monitoring; when the state signal of cable appears unusually, can accurate definite cable that needs the maintenance, and when the detection module that arbitrary way cable corresponds was damaged, the detection module of other cables was not influenced, can normally accomplish and detect.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the cable state detection device of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of the present invention in which the detecting modules are connected in parallel;

in the figure: 1. switchboard module, 2, detection module, 21, fiber transceiver, 22, on-off state module, 23, current sensor, 24, power module, 25, communication module, 31, microprocessing unit, 32, filtering protection loop, 33, AD circuit.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

The embodiment provides a cable state detection device, which comprises a switchboard module 1 and a plurality of groups of detection modules 2 connected in parallel, wherein in application, the receiving end of the switchboard module is respectively connected with each detection module 2. Each detection module detects the status signal of a way cable to transmit to switchboard module 1, switchboard module 1 gathers the status signal of each way cable of processing.

Referring to fig. 1, each detection module 2 includes a switch state module 22, a current sensor 23, an optical fiber transceiver 21, a microprocessor module, and a dial switch. The output end of the optical fiber transceiver is connected with the switchboard module 1, the input end of the optical fiber transceiver is connected with the micro-processing module, and the receiving end of the micro-processing module is respectively connected with the switch state module 22 and the current sensor 23.

The micro-processing module can receive the switching value state signal and the current signal of the corresponding cable, and the switching value state signal and the current signal are digital signals. The optical fiber transceiver can convert digital signals into optical signals, and transmits the optical signals to the switchboard module 1 through optical fibers so as to enhance the anti-interference performance of the switchboard module and realize the long-distance transmission of state signals of all paths of cables.

In application, the detection module 2 further comprises a shell, the shells with different shapes are arranged according to the actual field installation environment, and the shell is provided with a current sensor 23, when the detection module is actually applied in the embodiment, the current sensor 23 is a non-invasive current sensor which is installed at the starting end of a target branch, namely the starting end of the branch where the target cable is located, so that the current signal of the branch where the target cable is located can be received under the condition that the normal operation of the cable is not interfered; the switch state module 22 is connected to the auxiliary circuit reflecting the switch state in the branch where the target cable is located, so as to receive the switching value state signal of the branch where the target cable is located.

In addition, the dial switch pin is in communication connection with the micro-processing module and used for allocating a corresponding address to the detection module 2. When the state signal of the branch where a certain target cable is located appears abnormally, the switchboard module 1 can overhaul the corresponding branch where the target cable is located in time through the address, and the working efficiency is improved.

Example 2

On the basis of embodiment 1, this embodiment describes in detail the way in which the micro-processing module and the detection modules are connected in parallel.

Referring to fig. 1, the microprocessor block includes a microprocessor unit 31, a filter protection loop 32, and an AD circuit 33.

In application, the receiving end of the micro-processing unit is connected to the switch state module 22 through the filter protection circuit 32. The filter protection circuit 32 can prevent the microprocessor unit 31 from being damaged by an overcurrent or a voltage generated in a switch displacement process in a branch where the target cable is located, so as to protect the microprocessor unit 31.

In application, the receiving end of the microprocessor unit is connected with the current sensor 23 through the AD circuit 33. The AD circuit 33 can convert an analog signal output from the current sensor into a digital signal and transmit the digital signal to the micro processing unit 31 through the SPI bus.

Referring to fig. 2, the detection module 2 includes a power module 24 and a communication module 25.

In application, the power module 24 is externally connected with a 24V direct-current power supply to supply power for the cable state detection device; the communication module 25 includes a CAN communication interface to communicatively couple with an external communication device.

In application, one side of the detection module is provided with a power interface of the power module, and the other side of the detection module is provided with a CAN communication interface of the communication module, so that communication signals and power signals of the detection modules are not interfered with each other. The power interfaces of the adjacent detection modules are connected with each other; the CAN communication interfaces of the adjacent detection modules are connected with each other, so that the element of any detection module is damaged, and other detection modules CAN normally operate.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. A cable state detection device is characterized by comprising a switchboard module (1) and a plurality of groups of detection modules (2) connected in parallel;

the receiving end of the switchboard module is respectively connected with each detection module (2);

each detection module (2) comprises a switch state module (22), a current sensor (23), an optical fiber transceiver (21), a micro-processing module and a dial switch;

the output end of the optical fiber transceiver is connected with the switchboard module (1), the input end of the optical fiber transceiver is connected with the micro-processing module, the micro-processing module is in communication connection with the dial switch, and the receiving end of the micro-processing module is respectively connected with the switch state module (22) and the current sensor (23);

the switching state module (22) receives a switching value state signal of a branch where the target cable is located;

the current sensor (23) receives a current signal of a branch where the target cable is located.

2. The cable status detection device according to claim 1, wherein the detection module (2) comprises a power module (24) and a communication module (25);

the power modules (24) of adjacent detection modules are connected with each other;

the communication modules (25) of adjacent detection modules are connected with each other.

3. The cable condition detection device according to claim 1, wherein the microprocessor module comprises a microprocessor unit (31) and a filter protection circuit (32);

the receiving end of the micro-processing unit is connected with the switch state module (22) through a filtering protection loop (32).

4. The cable status detection device according to claim 1, wherein the microprocessor module includes a microprocessor unit (31) and an AD circuit (33);

the receiving end of the micro-processing unit is connected with a current sensor (23) through an AD circuit (33).

5. The cable condition detection device according to claim 1, wherein the detection module (2) comprises a housing on which a current sensor (23) is provided.

6. The cable status detection device according to claim 1, wherein the current sensor (23) is a non-invasive current sensor.

7. The cable status detection device according to claim 2, wherein the power module (24) is externally connected to a 24V dc power supply.

8. The cable status detection device according to claim 2, wherein the communication module (25) includes a CAN communication interface to communicatively connect an external communication device.