CN211718432U

CN211718432U - Novel cable external application fault monitoring system

Info

Publication number: CN211718432U
Application number: CN202020052792.8U
Authority: CN
Inventors: 王婧; 董军; 李凤先; 王帅; 张龙彪
Original assignee: Shuimu Yuanhua Electric Co ltd
Current assignee: Shuimu Yuanhua Electric Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-10-20
Anticipated expiration: 2030-01-10

Abstract

The utility model provides a novel cable external application fault monitoring system, which comprises a phase current acquisition module, a zero sequence current acquisition and data forwarding module, a collection module, a data center module and a cable external application signal generating device; the cable external signal generating device is electrically connected with the monitored cable; the phase current acquisition module comprises a measuring coil for detecting the phase current of the monitored cable and a power taking coil for taking power from the monitored cable; the phase current acquisition module is in communication connection with the zero sequence current acquisition and data forwarding module, the zero sequence current acquisition and data forwarding module is in communication connection with the collection module, and the collection module is in communication connection with the data center module. The phase current acquisition module of the utility model can not only get electricity and measure current, but also can be in two-way communication with the collection module; and the zero sequence current acquisition and data forwarding module is arranged, so that the connection of the communication of the collection module is simplified. And the battery capacity of the zero-sequence current acquisition and data forwarding module is reduced by arranging the power taking module.

Description

Novel cable external application fault monitoring system

Technical Field

The utility model relates to a cable run fault monitoring technology field especially indicates a novel cable fault monitoring system of executing outward.

Background

The cable fault monitoring system is used for correctly alarming and uploading alarm information to the data center module through the cable fault indicator when a cable line has a short-circuit fault, and the data center module processes and displays the fault; or when the cable line has single-phase earth fault, the fault is detected by the cable external signal generating device, the cable external signal generating device applies a specific waveform sequence on the cable line, the cable fault indicator of the line detects the characteristic waveform and then correctly alarms and uploads alarm information to the data center module, and the data center module processes and displays the fault.

The conventional cable external application fault monitoring system is shown in fig. 1 and comprises a power taking module, a phase current acquisition module, a collection module, a zero sequence current acquisition and data center module and a cable external application signal generation device; the phase current acquisition module and the collection module are generally communicated by single optical fibers, the phase current acquisition module is not provided with a power coil and cannot obtain power, the phase current can be measured only through a measuring coil of the phase current acquisition module, data only can flow in a single direction, and flexible parameter setting cannot be carried out; in addition, all the phase current acquisition modules are connected with the collection module, unidirectional communication is adopted, the number of connecting wires is large, problems are easy to occur, and the design of a communication part of a host is difficult.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a novel cable external application fault monitoring system to solve the problems that the phase current acquisition module of the existing cable external application fault monitoring system can not take electricity and the data can only flow in one direction; and all phase current acquisition modules are connected with the collection module, unidirectional communication is adopted, the number of connecting wires is large, problems are easy to occur, and the problem that the design of a communication part of a host is difficult is caused.

In order to solve the technical problem, the utility model provides a following technical scheme:

a novel cable applied fault monitoring system comprises a phase current acquisition module, a zero sequence current acquisition and data forwarding module, a collection module, a data center module and a cable applied signal generating device; wherein the content of the first and second substances,

the cable external signal generating device is electrically connected with the monitored cable;

the phase current acquisition module comprises a measuring coil for detecting the phase current of the monitored cable and a power taking coil for taking power from the monitored cable; the phase current acquisition module is in communication connection with the zero sequence current acquisition and data forwarding module, the zero sequence current acquisition and data forwarding module is in communication connection with the collection module, and the collection module is in communication connection with the data center module.

The phase current acquisition module comprises an A-phase current acquisition module, a B-phase current acquisition module and a C-phase current acquisition module; the phase-A current acquisition module, the phase-B current acquisition module and the phase-C current acquisition module are in communication connection with the zero-sequence current acquisition and data forwarding module;

the measuring coil and the power taking coil of the phase A current acquisition module are respectively sleeved on the phase A of the monitored cable; the measuring coil and the electricity taking coil of the phase B current acquisition module are respectively sleeved on the phase B of the monitored cable; and the measuring coil and the power taking coil of the C-phase current acquisition module are respectively sleeved on the C phase of the monitored cable.

Furthermore, the novel cable external application fault monitoring system also comprises a power taking module;

the input end of the electricity taking module is sleeved and pressed on any phase of the monitored cable, and the output end of the electricity taking module is electrically connected with the zero sequence current acquisition and data forwarding module and the collecting module respectively.

Optionally, the phase current acquisition module and the zero sequence current acquisition and data forwarding module are connected in a bidirectional communication manner through a dual optical fiber and/or a wireless communication manner.

Optionally, the zero-sequence current collecting and data forwarding module and the collecting module are connected in a bidirectional communication manner through a double optical fiber and/or a wireless communication manner.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

1. the phase current acquisition module of the utility model can not only get electricity and measure current, but also can be in two-way communication with the collection module, can realize flexible parameter setting, and increase the flexibility and the universality of the phase current acquisition module;

2. the zero sequence current acquisition and data forwarding module of the utility model can not only measure the zero sequence current, but also realize the data forwarding of the phase current acquisition module;

3. the utility model simplifies the connection line of the communication of the collection module and the circuit design of the collection module due to the arrangement of the zero sequence current acquisition and data forwarding module, thereby facilitating the realization of bidirectional data interaction;

4. the utility model discloses owing to be equipped with and get the electric module, zero sequence current gathers and the work of data forwarding module can obtain the guarantee, has reduced the battery capacity that zero sequence current gathered and data forwarding module.

Drawings

FIG. 1 is a system diagram of a conventional cable applied fault monitoring system;

fig. 2 is a system block diagram of the novel cable external fault monitoring system of the present invention;

fig. 3 is a system relationship diagram of the novel cable external fault monitoring system of the present invention.

[ main component symbol description ]

101. An A-phase current acquisition module; 102. a B-phase current acquisition module;

103. a C-phase current acquisition module; 104. a zero sequence current acquisition and data forwarding module;

105. a power taking module; 106. a cable external signal generating device; 107. a collection module;

108. and a data center module.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Referring to fig. 2 and fig. 3, the present embodiment provides a novel cable applied fault monitoring system, which includes a phase current acquisition module, a zero sequence current acquisition and data forwarding module 104, a collection module 107, a data center module 108, and a cable applied signal generation device 106; the cable external signal generating device 106 is electrically connected with a three-phase line of the monitored cable, and is used for applying a specific waveform sequence on the cable line when the monitored cable line has a ground fault;

the phase current acquisition module comprises a measuring coil for detecting the phase current of the monitored cable and a power taking coil for taking power from the monitored cable; the phase current acquisition module is in communication connection with the zero sequence current acquisition and data forwarding module 104 and is in bidirectional communication with the zero sequence current acquisition and data forwarding module 104, and the zero sequence current acquisition and data forwarding module 104 is in communication connection with the collection module 107 and is in bidirectional communication with the collection module 107; the aggregation module 107 is communicatively coupled to the data center module 108.

The phase current acquisition module comprises an A-phase current acquisition module 101, a B-phase current acquisition module 102 and a C-phase current acquisition module 103;

the phase-A current acquisition module 101, the phase-B current acquisition module 102 and the phase-C current acquisition module 103 are in communication connection with the zero-sequence current acquisition and data forwarding module 104; a measuring coil and a power taking coil of the A-phase current acquisition module 101 are respectively sleeved on the A phase of the monitored cable; a measuring coil and a power taking coil of the phase B current acquisition module 102 are respectively sleeved on a phase B of the monitored cable; the measuring coil and the power taking coil of the C-phase current acquisition module 103 are respectively sleeved on the C-phase of the monitored cable. Each phase current acquisition module transmits the acquired data to the zero sequence current acquisition and data forwarding module 104, and the zero sequence current acquisition and data forwarding module 104 forwards the data to the collecting module 107; a collection module 107 of this embodiment can monitor up to 8 cabling as shown in fig. 3.

Further, the novel cable external application fault monitoring system of the embodiment further comprises a power taking module 105; the input end of the power taking module 105 is pressed on any phase of the monitored cable, and the output end of the power taking module is electrically connected with the zero sequence current collecting and data forwarding module 104 and the collecting module 107 respectively, so that power is supplied to the power taking module.

Specifically, in this embodiment, the phase current collection module and the zero sequence current collection and data forwarding module 104 are connected in a bidirectional communication manner through a dual optical fiber and/or a wireless communication manner. The zero-sequence current collecting and data forwarding module 104 and the collecting module 107 are connected in a bidirectional communication manner through a double optical fiber and/or a wireless communication manner. It should be understood that, in this embodiment, the specific communication modes between the phase current acquisition module and the zero sequence current acquisition and data forwarding module 104 and between the zero sequence current acquisition and data forwarding module 104 and the collection module 107 are not limited, and only the modules need to be in bidirectional communication.

The phase current acquisition module of the embodiment can not only take electricity and measure current, but also can be in two-way communication with the collection module, so that flexible parameter setting can be realized, and the flexibility and the universality of the phase current acquisition module are improved; the zero-sequence current acquisition and data forwarding module 104 is arranged to realize data forwarding of the phase current acquisition module, simplify the connection line of the communication of the collection module 107, simplify the circuit design of the collection module 107 and facilitate realization of bidirectional data interaction; in addition, the power taking module 105 is equipped to supply power to the sequence current collecting and data forwarding module 104, so that the battery capacity of the zero sequence current collecting and data forwarding module 104 is reduced.

Further, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

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

Claims

1. A novel cable applied fault monitoring system is characterized by comprising a phase current acquisition module, a zero sequence current acquisition and data forwarding module, a collection module, a data center module and a cable applied signal generating device; wherein the content of the first and second substances,

2. The novel cable applied fault monitoring system of claim 1, wherein the phase current acquisition module comprises an a-phase current acquisition module, a B-phase current acquisition module and a C-phase current acquisition module; the phase-A current acquisition module, the phase-B current acquisition module and the phase-C current acquisition module are in communication connection with the zero-sequence current acquisition and data forwarding module;

3. The novel cable external application fault monitoring system of claim 1, further comprising a power taking module;

4. The system for monitoring the fault applied to the external cable according to claim 1, wherein the phase current acquisition module and the zero sequence current acquisition and data forwarding module are connected in a bidirectional communication manner through a dual optical fiber and/or a wireless communication manner.

5. The system for monitoring the fault applied to the external cable according to claim 1, wherein the zero-sequence current collection and data forwarding module and the collection module are connected in a bidirectional communication manner by using a dual optical fiber and/or a wireless communication manner.