CN214895608U - Distributed fault recording system for low-voltage distribution network - Google Patents
Distributed fault recording system for low-voltage distribution network Download PDFInfo
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- CN214895608U CN214895608U CN202120412573.0U CN202120412573U CN214895608U CN 214895608 U CN214895608 U CN 214895608U CN 202120412573 U CN202120412573 U CN 202120412573U CN 214895608 U CN214895608 U CN 214895608U
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Abstract
The utility model discloses a distributed fault recording system for a low-voltage distribution network, which comprises a plurality of stages of fault recording mechanisms which are connected in sequence, wherein each stage of the fault recording mechanism comprises a signal acquisition module, a fault recorder, a photoelectric coupler, a first Ethernet interface and a second Ethernet interface, a three-phase conductive cable in the low-voltage distribution network is connected with the signal acquisition module, the signal acquisition module is connected with the fault recorder, the fault recorder is connected with the photoelectric coupler, the photoelectric coupler is respectively connected with the first Ethernet interface and the second Ethernet interface, the first Ethernet interface in each stage of fault recording mechanism is connected with the second Ethernet interface in the last stage of fault recording mechanism, a second Ethernet interface in the last stage of fault recording mechanism is connected with the industrial personal computer through a switch; the utility model discloses can realize the trouble record ripples, and through the mounting means of distributing type, simplify the difficult problem of wiring, the cost is reduced.
Description
Technical Field
The utility model relates to a trouble record ripples technical field, especially a distributed fault record ripples system for low voltage distribution network.
Background
The rise of the intelligent power grid technology integrates an information processing technology, a wired/wireless communication technology, an advanced electronic sensing technology and the like, and the popularization of novel digital fault indicators, FTU/DTU and other power distribution network automation equipment partially relieves the economic and social pressure caused by power failure of a power distribution network. However, if a more basic original fault waveform database containing complete information of current, voltage and electric field of the distribution network line is not established in advance, it is still difficult to improve the accuracy of fault diagnosis under the condition that various fault diagnosis and positioning methods can still be designed only by means of data obtained by electromagnetic software simulation; and traditional trouble record ripples system is difficult to realize concentrating unified installation, and distribution system trouble record ripples wiring is difficult, with high costs.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the prior art, the utility model aims at providing a distributed trouble record ripples system for low voltage distribution network, the utility model discloses can realize the trouble record ripples, and through the mounting means of distributing type, simplify the difficult problem of wiring, the cost is reduced.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a distributed trouble record ripples system for low voltage distribution network, includes the multistage trouble record ripples mechanism that connects gradually, each level trouble record ripples mechanism include signal acquisition module, trouble record ripples ware, optoelectronic coupler and first ethernet interface and second ethernet interface, the three-phase in the low voltage distribution network electrically conducts the cable with signal acquisition module connects, signal acquisition module with the trouble record ripples ware is connected, the trouble record ripples ware with optoelectronic coupler connects, optoelectronic coupler respectively with first ethernet interface and second ethernet interface connection, the first ethernet interface in the trouble record ripples mechanism of each level and the second ethernet interface connection in the trouble record ripples mechanism of last level, and the second ethernet interface in the trouble record ripples mechanism of last level passes through the switch and is connected with the industrial computer.
As a further improvement, the signal acquisition module includes the current transformer that is used for gathering transient state electric current and the electric field detection sensor that is used for gathering transient state voltage, current transformer and electric field detection sensor install respectively on the electrically conductive cable of three-phase to be connected to the input port of trouble oscillograph.
As a further improvement of the utility model, the distributed fault recording system further comprises a display and an alarm connected with the industrial personal computer.
As a further improvement of the present invention, the first ethernet interface and the second ethernet interface are 1000M ethernet electrical ports.
The utility model has the advantages that:
the utility model discloses simple structure adopts the wiring mode of ethernet series connection in proper order when low voltage distribution system network installation construction, lays an ethernet line to one-level trouble record ripples mechanism from the switch promptly, and trouble record ripples mechanism lays an ethernet line connection again and constructs to next-level trouble record ripples mechanism, and through the distributed mounting means of series connection in proper order, solved low voltage distribution system and be difficult to concentrate the installation, be difficult to lay communication cable and the high problem of construction cost like this.
Drawings
Fig. 1 is a block diagram of a circuit structure according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1, a distributed fault recording system for a low-voltage distribution network comprises a plurality of stages of fault recording mechanisms connected in sequence, each stage of the fault recording mechanism comprises a signal acquisition module, a fault recorder, a photoelectric coupler, a first ethernet interface and a second ethernet interface, a three-phase conductive cable in the low-voltage distribution network is connected with the signal acquisition module, the signal acquisition module is connected with the fault recorder, the fault recorder is connected with the photoelectric coupler, the photoelectric coupler is respectively connected with the first Ethernet interface and the second Ethernet interface, the first Ethernet interface in each stage of fault recording mechanism is connected with the second Ethernet interface in the last stage of fault recording mechanism, and a second Ethernet interface in the last stage of fault recording mechanism is connected with the industrial personal computer through a switch.
In this embodiment, the signal acquisition module includes a current transformer for acquiring transient current and an electric field detection sensor for acquiring transient voltage, and the current transformer and the electric field detection sensor are respectively installed on the three-phase conductive cable and are connected to the input port of the fault recorder.
In this embodiment, the distributed fault recording system further includes a display and an alarm connected to the industrial personal computer.
In this embodiment, the first ethernet interface and the second ethernet interface are both 1000M ethernet ports.
The working principle of the present embodiment is further explained as follows:
a current transformer and an electric field detection sensor in a signal acquisition module arranged on the three-phase conductive cable transmit the acquired transient current and transient voltage to a fault recorder, the fault recorder records the change signals of various electric quantities before and after the fault, the fault type and the position are judged, the photoelectric coupler isolates the input end and the output end through the electric-optical-electric conversion, the interference of electromagnetic wave is inhibited, the signal recorded by the fault recorder is transmitted to the industrial personal computer through the switch, an Ethernet wire is laid from the switch to the first-stage fault recorder, the fault recorder is laid with an Ethernet wire to be connected to the next-stage fault recorder, through the distributed installation mode of serial connection in sequence, the problems that a low-voltage power distribution system is difficult to install in a centralized mode, laying communication cables is difficult and construction cost is high are solved.
The display is used for displaying the related electric quantity and switching value information of the power distribution network, displaying the fault diagnosis result and facilitating the dispatching personnel to monitor the running condition of the power distribution network in real time; the alarm is used for giving an alarm when a fault occurs.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. A distributed fault recording system for a low-voltage distribution network is characterized by comprising a plurality of stages of fault recording mechanisms which are sequentially connected, wherein each stage of fault recording mechanism comprises a signal acquisition module, a fault recorder, a photoelectric coupler, a first Ethernet interface and a second Ethernet interface, a three-phase conductive cable in the low-voltage distribution network is connected with the signal acquisition module, the signal acquisition module is connected with the fault recorder, the fault recorder is connected with the photoelectric coupler, the photoelectric coupler is respectively connected with the first Ethernet interface and the second Ethernet interface, the first Ethernet interface in each stage of fault recording mechanism is connected with the second Ethernet interface in the last stage of fault recording mechanism, and a second Ethernet interface in the last stage of fault recording mechanism is connected with the industrial personal computer through a switch.
2. The distributed fault recording system for the low-voltage distribution network according to claim 1, wherein the signal acquisition module comprises a current transformer for acquiring transient current and an electric field detection sensor for acquiring transient voltage, and the current transformer and the electric field detection sensor are respectively installed on a three-phase conductive cable and connected to an input port of the fault recorder.
3. The distributed fault recording system for a low-voltage distribution network according to claim 1 or 2, further comprising a display and an alarm connected to the industrial personal computer.
4. The distributed fault recording system for a low-voltage distribution network according to claim 1 or 2, wherein the first ethernet interface and the second ethernet interface are both 1000M ethernet ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120412573.0U CN214895608U (en) | 2021-02-25 | 2021-02-25 | Distributed fault recording system for low-voltage distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120412573.0U CN214895608U (en) | 2021-02-25 | 2021-02-25 | Distributed fault recording system for low-voltage distribution network |
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| Publication Number | Publication Date |
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| CN214895608U true CN214895608U (en) | 2021-11-26 |
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| CN202120412573.0U Active CN214895608U (en) | 2021-02-25 | 2021-02-25 | Distributed fault recording system for low-voltage distribution network |
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2021
- 2021-02-25 CN CN202120412573.0U patent/CN214895608U/en active Active
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