CN216209617U - Electric arc detection device and electric energy meter - Google Patents
Electric arc detection device and electric energy meter Download PDFInfo
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- CN216209617U CN216209617U CN202122571800.7U CN202122571800U CN216209617U CN 216209617 U CN216209617 U CN 216209617U CN 202122571800 U CN202122571800 U CN 202122571800U CN 216209617 U CN216209617 U CN 216209617U
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Abstract
The utility model relates to the technical field of arc detection, in particular to an arc detection device and an electric energy meter. The arc detection device includes: the open type current transformer is connected with the sampling processing module, and is mounted on a target circuit in a non-invasive mode and used for acquiring a current signal of the target circuit; and the sampling processing module is used for sampling the current signals collected by the open type current transformer to obtain a sampling result, and carrying out arc detection according to the sampling result to obtain an arc detection result.
Description
Technical Field
The utility model relates to the technical field of arc detection, in particular to an arc detection device and an electric energy meter.
Background
During the operation of the existing ac loads, various arcs are generally generated, and an arc fault is one of the main causes of an electrical fire. The arc fault detector is used as monitoring equipment of the electrical fire, and can effectively reduce the occurrence probability of the electrical fire in a monitored area.
With the continuous progress of safety consciousness of people, arc fault detection is increasingly applied to the daily life and production process of people. Therefore, in order to ensure the safety of the product, the detection of the arc signal in the line is required.
At present, because the requirements of arc detection on sensitivity and accuracy are high, current transformers are in a closed form, namely, the arc detection scheme needs to connect the closed current transformer to a primary circuit to detect, protect and obtain energy of alternating current arcs. If an arc detection system needs to be installed after the primary line is wired, the original primary line needs to be broken and disassembled.
SUMMERY OF THE UTILITY MODEL
The utility model provides an arc detection device, which is used for solving the problem that an original circuit needs to be broken and disassembled when an arc detection system is installed after wiring of the circuit is finished in the prior art.
In a first aspect, the present invention provides an arc detection apparatus, comprising an open-type current transformer and a sampling processing module, wherein the open-type current transformer is connected with the sampling processing module,
the open type current transformer is arranged on a target circuit in a non-invasive mode and is used for acquiring a current signal of the target circuit;
and the sampling processing module is used for sampling the current signals collected by the open type current transformer to obtain a sampling result, and carrying out arc detection according to the sampling result to obtain an arc detection result.
Optionally, the arc detection device further includes a display module, and the display module is connected to the sampling processing module;
the sampling processing module is further used for sending the arc detection result to the display module for displaying.
Optionally, the arc detection device further comprises an alarm module, and the alarm module is connected with the sampling processing module;
and the sampling processing module controls the alarm module to give an alarm when the arc fault is determined to occur according to the arc detection result.
Optionally, the open current transformer is an open rogowski coil.
Optionally, the sampling processing module is a field programmable gate array FPGA.
Optionally, the sampling processing module includes sampling sub-modules of a plurality of sampling channels, where each sub-module performs sampling processing on the current signal acquired by the open-type current transformer, and obtains a sampling result of the corresponding sampling channel.
In a second aspect, an embodiment of the present invention provides an electric energy meter, where the electric energy meter includes the arc detection device according to any one of the first aspect, where the arc detection device is configured to detect whether an arc fault occurs on an output phase line of the electric energy meter.
By adopting the arc detection equipment provided by the embodiment of the utility model, the open type current transformer is adopted, non-invasive installation can be adopted, and the current transformer does not need to be installed by breaking the wire of the primary coil which is already wired, so that the installation complexity of the arc detection device is greatly simplified, and the installation without power failure can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, but not all embodiments. For a person skilled in the art, therefore, this should not be regarded as a limitation of scope, but for a person skilled in the art, other relevant figures can also be derived from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of an arc detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another arc detection device provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electric energy meter according to an embodiment of the present invention.
Reference numerals:
an arc detection device-10; an open type current transformer-100; a sampling processing module-101; a display module-102; an alarm module-103; electric energy meter-30.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Exemplarily, referring to fig. 1, a schematic structural diagram of an arc detection apparatus according to an embodiment of the present invention is shown, where the arc detection apparatus 10 includes an open-type current transformer 100 and a sampling processing module 101, the open-type current transformer 100 is connected to the sampling processing module 101, where,
the open type current transformer 100 is mounted on a target circuit in a non-invasive manner and is used for acquiring a current signal of the target circuit;
the sampling processing module 101 is configured to perform sampling processing on the current signal acquired by the open-type current transformer 100 to obtain a sampling result, and perform arc detection according to the sampling result to obtain an arc detection result.
Exemplarily, referring to fig. 2, a schematic structural diagram of another arc detection apparatus provided in the embodiment of the present invention is shown, where the arc detection apparatus 10 includes, in addition to an open-type current transformer 100 and a sampling processing module 101, a display module 102, and the display module 102 is connected to the sampling processing module 101;
the sampling processing module 101 is further configured to send the arc detection result to the display module 102 for displaying.
Further, in the embodiment of the present invention, the arc detection apparatus further includes an alarm module 103, and the alarm module 103 is connected to the sampling processing module 101;
and the sampling processing module 11 controls the alarm module 103 to alarm when the arc fault is determined to occur according to the arc detection result.
Preferably, in the embodiment of the present invention, the open-type current transformer 100 is an open-type rogowski coil.
Preferably, in the embodiment of the present invention, the sampling processing module 101 is a Field Programmable Gate Array (FPGA).
Preferably, in the embodiment of the present invention, the sampling processing module 101 includes sampling sub-modules of a plurality of sampling channels, where each sub-module respectively performs sampling processing on the current signal acquired by the open-type current transformer to obtain a sampling result of a corresponding sampling channel.
In the embodiment of the utility model, the FPGA is adopted to carry out high-speed multichannel sampling on the current signal, and the digital wavelet analysis algorithm is utilized to carry out multi-order wavelet analysis on the current signal, so that the characteristic value of the electric arc can be accurately found, the type and the precision of the current transformer are not dependent, and the matching use of a low-pass current transformer and a high-pass current transformer is not required. In the embodiment of the utility model, the open type current transformer is adopted, non-invasive installation can be adopted, the current transformer does not need to be installed by breaking the wire of the primary coil which is already wired, the installation complexity of the electric arc detection device is greatly simplified, and the installation without power failure can be realized.
The non-intrusive type installation only needs to install the open-ended current transformer on a primary side bus, the signal of the transformer is connected into the FPGA acquisition board, and the acquisition board can detect whether an arc fault occurs according to the signal output by the transformer.
Referring to fig. 3, an exemplary structure diagram of an electric energy meter according to an embodiment of the present invention is provided, where the electric energy meter 30 includes the arc detection device 10, where the arc detection device 10 is configured to detect whether an arc fault occurs on an output phase line of the electric energy meter 30.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. An arc detection device, characterized in that the arc detection device comprises an open type current transformer and a sampling processing module, the open type current transformer is connected with the sampling processing module, wherein,
the open type current transformer is arranged on a target circuit in a non-invasive mode and is used for acquiring a current signal of the target circuit;
and the sampling processing module is used for sampling the current signals collected by the open type current transformer to obtain a sampling result, and carrying out arc detection according to the sampling result to obtain an arc detection result.
2. The arc detection device of claim 1, further comprising a display module, said display module coupled to said sampling processing module;
the sampling processing module is further used for sending the arc detection result to the display module for displaying.
3. The arc detection device of claim 1, further comprising an alarm module, said alarm module coupled to said sampling processing module;
and the sampling processing module controls the alarm module to give an alarm when the arc fault is determined to occur according to the arc detection result.
4. An arc detection device according to any of claims 1-3, wherein said open ended current transformer is an open ended Rogowski coil.
5. The arc detection device of any of claims 1-3, wherein the sampling processing module is a Field Programmable Gate Array (FPGA).
6. The arc detection device according to claim 5, wherein the sampling processing module comprises a sampling submodule of a plurality of sampling channels, wherein each submodule respectively samples the current signal collected by the open-type current transformer to obtain the sampling result of the corresponding sampling channel.
7. An electric energy meter, characterized in that the electric energy meter comprises an arc detection device according to any one of claims 1-6, wherein the arc detection device is used for detecting whether an arc fault occurs on an output phase line of the electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122571800.7U CN216209617U (en) | 2021-10-22 | 2021-10-22 | Electric arc detection device and electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122571800.7U CN216209617U (en) | 2021-10-22 | 2021-10-22 | Electric arc detection device and electric energy meter |
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| CN216209617U true CN216209617U (en) | 2022-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505511A (en) * | 2020-12-14 | 2021-03-16 | 天津求实智源科技有限公司 | Non-invasive low-voltage fault arc detection and positioning method and system |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505511A (en) * | 2020-12-14 | 2021-03-16 | 天津求实智源科技有限公司 | Non-invasive low-voltage fault arc detection and positioning method and system |
| CN112505511B (en) * | 2020-12-14 | 2022-06-07 | 天津求实智源科技有限公司 | Non-invasive low-voltage fault arc detection and positioning method and system |
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Effective date of registration: 20230428 Address after: 33, 4th Floor, Commercial Service Building, No. 19, Yuhuili Second District, Xiaoying Road, Chaoyang District, Beijing 100000 Patentee after: Beijing Smart Power Technology Co.,Ltd. Address before: 100000 3f06, heshenghui office building, No. 22, xidawang Road, Chaoyang District, Beijing Patentee before: Duan Xiaohan Patentee before: Xian Ce Patentee before: Pan Yingchao |
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