CN214539770U - Same-phase lightning current sensor - Google Patents
Same-phase lightning current sensor Download PDFInfo
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- CN214539770U CN214539770U CN202120757463.8U CN202120757463U CN214539770U CN 214539770 U CN214539770 U CN 214539770U CN 202120757463 U CN202120757463 U CN 202120757463U CN 214539770 U CN214539770 U CN 214539770U
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Abstract
The utility model provides a same phase lightning current sensor relates to sensor technical field, especially relates to a same phase lightning current sensor, corresponds ground part, and lightning current sensor includes the mounting box with ground part demountable installation, installs the integrator in the mounting box, and the Rogowski coil of linear type or the arc-shaped structure that fixed mounting and ground part set up perpendicularly on the integrator, the output of integrator pass the mounting box. The utility model discloses it is more convenient to install, can realize the unilateral installation, and is more nimble simple, the secondary signal and the thunder and lightning signal same phase of output.
Description
Technical Field
The utility model relates to a sensor technical field especially relates to a same phase lightning current sensor.
Background
Thunder is a common natural phenomenon, instantaneous large current and high voltage generated by the thunder have serious harm to electronic equipment, buildings and human beings, the amplitude of the thunder reaches hundreds of kA, and the time is different from mu s to ms. And power transmission and distribution lines, wind driven generators, high-rise buildings and the like are particularly easy to be struck by lightning. Therefore, protective measures such as lightning protection devices and safe grounding systems are installed in the above occasions. The safe grounding part has the forms of round wires, flat copper bars, large-scale metal outer walls and the like.
The lightning measurement device is arranged on the overhead transmission line, the lightning stroke place of the line and the waveform and the amplitude of the lightning current are monitored in real time, powerful support can be provided for searching the lightning stroke line fault pole tower and formulating the lightning current waveform and amplitude standards, and the lightning protection device plays a positive role in the development of the lightning protection technology in China. The lightning current sensor is used as an important component of transformer substation lightning stroke on-line monitoring, and the performance of the lightning current sensor directly influences the measurement precision of a system. At present, the lightning strike current of various grounding parts is difficult to be installed and monitored by a uniform sensor.
The Rogowski coil is formed by uniformly winding a lead on a non-ferromagnetic structure with uniform size and inducing electromotive force through a winding coil. The Rogowski coil has wide response frequency band, large measurement range, no hysteresis and saturation phenomenon, no direct electrical connection with a measured loop, strong anti-interference capability, easy micromation and networking, small volume, light weight and wide application, and is used for measuring mu s and ns-level pulse plasma current, electron beam current and the like in a high-power pulse technology besides measuring impact large current. Therefore, the method is very suitable for measuring lightning current.
The existing Rogowski coil lightning current measuring sensor mostly adopts a circular ring structure, and a grounding part is positioned in the center of the circular ring, so that the structure is very inconvenient for the installation of the existing grounding part. In addition, the secondary induced potential generated by the rogowski coil is 90 degrees out of phase with the current of the primary wire.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a same phase lightning current sensor is in order to solve above-mentioned problem.
In order to achieve the above object, the utility model discloses a same phase lightning current sensor corresponds ground connection part, and lightning current sensor includes the mounting box with ground connection part demountable installation, installs the integrator in the mounting box, the Rogowski coil of the linear type or the circular arc type structure that fixed mounting and ground connection part set up perpendicularly on the integrator, and the output of integrator passes the mounting box in order to supply to connect external circuit.
The technical scheme of the utility model in, the mounting box passes through connecting plate demountable installation with the ground connection part.
As a technical scheme of the utility model, one side that the mounting box is close to ground connection part is opened has the arc recess that runs through, and the arc connecting plate that corresponds with the opening of arc recess is installed respectively at the upper and lower both ends of mounting box, and the connecting plate passes through ribbon fixed connection with ground connection part.
As the utility model discloses a another kind of technical scheme, one side that the mounting box is close to ground connection part is opened has the arc recess that runs through, fixed mounting arc connecting plate in the arc recess, and the both ends that the connecting plate stretches out the recess pass through ribbon fixed connection with ground connection part respectively.
Furthermore, a notch corresponding to the ribbon is formed in the connecting plate.
Preferably, the inner diameter of the arc-shaped connecting plate is the same as the outer diameter of the grounding part.
In addition, the mounting box further comprises a metal shielding layer.
The technical scheme of the utility model in, adopt straight strip type or convex luo shi coil as lightning current induction unit, it is more convenient to compare in traditional ring type installation, can realize unilateral installation, and specially adapted has installed the scene of ground connection part, and is more nimble simple. The two ends of the Rogowski coil are connected with the integrator, so that the phase difference of 90 degrees between the secondary induced potential generated by the Rogowski coil and the current of the primary lead can be adjusted, and the secondary signal output by the sensor and the lightning signal are in the same phase.
Drawings
Fig. 1 is an overall configuration diagram of a lightning current sensor.
Fig. 2 is a view showing an internal structure of the mounting box.
Fig. 3 is a schematic diagram of a position relationship between the mounting box and the mounting plate in the first mounting manner.
Fig. 4 is a schematic diagram of the position relationship between the mounting box and the mounting plate in the second mounting manner.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
To the problem that prior art exists, the embodiment of the utility model provides a same phase lightning current sensor.
Examples
As shown in fig. 1-2, an in-phase lightning current sensor, corresponding to a grounding component 1, includes a mounting box 2 detachably mounted to the grounding component 1, an integrator 5 is mounted in the mounting box 2, the integrator 5 is an integrated integration circuit board, and for the prior art, a linear or arc-shaped rogowski coil 3 is welded to the integrator 5 and is perpendicular to the grounding component 1, the arc-shaped rogowski coil is not shown in the figure, and a concave side of the arc-shaped rogowski coil faces the grounding component; the output of the integrator 5 passes through the mounting box 2 for connection to external circuitry.
The mounting box 2 and the grounding part 1 are detachably mounted through a connecting plate 4.
As shown in fig. 3, one of the mounting methods is: one side of the mounting box 2 close to the grounding part 1 is provided with a through arc-shaped groove, the upper end and the lower end of the mounting box 2 are respectively provided with an arc-shaped connecting plate 4 corresponding to the opening of the arc-shaped groove, and the connecting plate 4 is fixedly connected with the grounding part 1 through a binding belt (not shown in the figure).
As shown in fig. 4, another installation method is as follows: one side of the mounting box 2 close to the grounding part 1 is provided with a through arc-shaped groove, an arc-shaped connecting plate 4 is fixedly mounted in the arc-shaped groove, the different mounting modes are that the connecting plate is one, the length of the connecting plate is larger than that of the groove, and two ends of the connecting plate, which extend out of the groove, are respectively fixedly connected with the grounding part 1 through a binding belt. (not shown in the figure).
The connecting plate is provided with a notch (not shown in the figure) corresponding to the ribbon.
The inner diameter of the arc-shaped connecting plate is the same as the outer diameter of the grounding part.
The mounting box also comprises a metal shielding layer, so that interference can be reduced.
When the lightning current sensor works, the grounding part 1 discharges lightning current, the Rogowski coil 3 induces the lightning current to generate an output signal, the output signal is output by the output end of the integrator 5 after being processed by the integrator 5, and the output end is connected with an external circuit for analysis and processing.
Because the Rogowski coil of this embodiment is linear type or circular arc type, is the structure of non-ring, need not place ground connection part 1 in the ring center, consequently, can realize unilateral installation, conveniently install the analysis to current ground connection part. The two ends of the Rogowski coil are connected with the integrator, so that the phase difference of 90 degrees between the secondary induced potential generated by the Rogowski coil and the current of the primary lead can be adjusted, and the secondary signal output by the sensor and the lightning signal are in the same phase.
Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the appended claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.
Claims (7)
1. The utility model provides an in-phase lightning current sensor, corresponds ground connection part, its characterized in that, lightning current sensor include with ground connection part demountable installation's mounting box, install the integrator in the mounting box, the rogowski coil of the linear type or the circular arc type structure that fixed mounting and ground connection part set up perpendicularly on the integrator, the mounting box is passed to the output of integrator.
2. An in-phase lightning current sensor according to claim 1, wherein the mounting box is removably mountable to the ground member by means of a connection plate.
3. The in-phase lightning current sensor according to claim 2, wherein one side of the mounting box near the grounding member is provided with a through arc-shaped groove, the upper and lower ends of the mounting box are respectively provided with arc-shaped connecting plates corresponding to the openings of the arc-shaped grooves, and the connecting plates are fixedly connected with the grounding member through a binding tape.
4. The in-phase lightning current sensor according to claim 2, wherein the mounting box has a through arc-shaped groove on a side thereof adjacent to the grounding member, an arc-shaped connecting plate is fixedly mounted in the arc-shaped groove, and two ends of the connecting plate extending out of the groove are respectively fixedly connected with the grounding member through a binding tape.
5. An in-phase lightning current sensor according to claim 3 or claim 4, wherein the connecting plate is notched to correspond to the strap.
6. An in-phase lightning current sensor according to claim 5, characterised in that the inner diameter of the arcuate web is the same as the outer diameter of the ground engaging member.
7. An in-phase lightning current sensor according to claim 6, characterised in that the mounting box includes a metallic shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120757463.8U CN214539770U (en) | 2021-04-14 | 2021-04-14 | Same-phase lightning current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120757463.8U CN214539770U (en) | 2021-04-14 | 2021-04-14 | Same-phase lightning current sensor |
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| CN214539770U true CN214539770U (en) | 2021-10-29 |
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| CN202120757463.8U Active CN214539770U (en) | 2021-04-14 | 2021-04-14 | Same-phase lightning current sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740244A (en) * | 2022-04-01 | 2022-07-12 | 核工业西南物理研究院 | Rogowski coil probe for plasma current distribution diagnosis |
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2021
- 2021-04-14 CN CN202120757463.8U patent/CN214539770U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740244A (en) * | 2022-04-01 | 2022-07-12 | 核工业西南物理研究院 | Rogowski coil probe for plasma current distribution diagnosis |
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