CN213990134U

CN213990134U - 5G light difference protection circuit and device

Info

Publication number: CN213990134U
Application number: CN202023126248.2U
Authority: CN
Inventors: 包晨晓
Original assignee: Wuxi Tianneng Electric Appliance Co ltd
Current assignee: Wuxi Tianneng Electric Appliance Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-08-17
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses a 5G light difference protection circuit and device, this detection circuitry include stabiliser, central processing unit, digital analog converter, wavelength division multiplexer, analog to digital converter, the mutual-inductor that connects gradually the electricity. The central processing unit sequentially passes through the current transformer, the analog-to-digital converter, the wavelength division multiplexer connected with the optical fiber and the current magnitude on two sides of the digital-to-analog converter receiving circuit to be analyzed, controls the relay to trigger the alarm to give an alarm according to an analysis result, feeds back the analysis result to the cloud server to perform remote control, gives an alarm in time, does not need field maintenance, and is safe and reliable.

Description

5G light difference protection circuit and device

Technical Field

The utility model relates to an optical differential protection technical field especially relates to a 5G optical differential protection circuit and device.

Background

In the protection of the power system line, the medium and low voltage line mainly adopts current protection, and for the short line, the protection range of the current quick break is very small or not, and the selectivity is difficult to ensure, so that the current differential protection needs to be configured. Current differential protection requires that the amount of current on both sides of the line participate in the calculation at the same time. The traditional mode is that a combined current converter is adopted to convert three-phase current into one-path current, and then cable transmission is adopted, so that signal attenuation is serious, and three-phase protection sensitivity is different. With the development of microcomputer protection and optical fiber communication technology, optical fiber is increasingly adopted for optical differential protection in data transmission channels.

The optical differential protection is actually differential protection, which is formed by converting electrical quantities on two sides into digital signals and then performing bilateral communication through optical fibers to compare the electrical quantities on the two sides, and adopts a split-phase current differential element as fast main protection and a PCM optical fiber or an optical cable as a channel to make the action speed of the optical differential protection faster, so that the optical differential protection is generally applied to very important lines as main protection and can protect the whole length of the lines.

To the above-mentioned this kind of condition, the utility model provides a 5G light difference protection circuit and device can improve prior art effectively to overcome it not enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a 5G light difference protection circuit and device, solved the above-mentioned problem among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in a first aspect, the utility model provides a 5G light difference protection circuit, protection circuit includes: the voltage stabilizer, the central processing unit, the digital-to-analog converter, the wavelength division multiplexer, the analog-to-digital converter and the mutual inductor are electrically connected in sequence;

the wavelength division multiplexer comprises a first wavelength division multiplexer and a second wavelength division multiplexer, and the first wavelength division multiplexer and the second wavelength division multiplexer are connected through a multimode optical fiber.

Preferably, the protection circuit further comprises an optical 5G communication module;

the 5G communication module is electrically connected with the central processing unit, and the 5G communication module is used for transmitting a detection result to the cloud server for analysis and storage and receiving remote instruction control of the cloud server.

Preferably, the protection circuit further comprises a relay, the relay is electrically connected with the central processing unit, and the relay controls the external device controlled by the relay according to the detection result of the central processing unit.

Preferably, the protection circuit further comprises an alarm, the alarm is electrically connected with the relay, and the central processing unit triggers the alarm to give an alarm through the grounding of the inductive coil inductive switch of the relay.

Preferably, the transformer is a current transformer of current type, and the voltage regulator is an LDO linear voltage regulator for maintaining a stable operating voltage of the central processing unit.

In a second aspect, the present invention provides a 5G optical differential protection device, including the first aspect the 5G optical differential protection circuit.

The utility model has the advantages that: the utility model discloses a 5G light difference protection circuit and device, central processing unit loop through current transformer, analog to digital converter, the wavelength division multiplexer of optical fiber connection, the current capacity of digital to analog converter receiving line both sides carries out analysis processes to control the relay according to the analysis result and trigger the alarm and report to the police, carry out remote control with analysis result feedback to high in the clouds server simultaneously, in time report to the police, need not the on-the-spot maintenance, safe and reliable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative efforts.

Fig. 1 is a schematic circuit diagram of an embodiment of the 5G optical difference protection circuit of the present invention.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are preferred embodiments of the present invention. It is to be understood that the described embodiments are merely a subset of the embodiments of the invention, and not all embodiments; it should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

The utility model provides a 5G light differential protection circuit, as shown in fig. 1, this 5G light differential protection circuit specifically can include following module: the voltage stabilizer, the central processing unit, the digital-to-analog converter, the wavelength division multiplexer, the analog-to-digital converter and the mutual inductor are electrically connected in sequence; the wavelength division multiplexer comprises a first wavelength division multiplexer and a second wavelength division multiplexer, and the first wavelength division multiplexer and the second wavelength division multiplexer are connected through a multimode optical fiber.

In this embodiment, the transformer is a current transformer of a current type, and the voltage regulator is an LDO linear voltage regulator for maintaining a stable operating voltage of the central processing unit.

In an optional embodiment, the protection circuit further comprises an optical 5G communication module; the 5G communication module is electrically connected with the central processing unit, and the 5G communication module is used for transmitting a detection result to the cloud server for analysis and storage and receiving remote instruction control of the cloud server.

In another optional embodiment, the protection circuit further comprises a relay, the relay is electrically connected with the central processing unit, and the relay controls the external device controlled by the relay according to the detection result of the central processing unit.

In still another optional embodiment, the protection circuit further comprises an alarm, the alarm is electrically connected with the relay, and the central processing unit triggers the alarm to give an alarm by grounding the inductive coil inductive switch of the relay.

The utility model discloses 5G light difference protection circuit's theory of operation and effect: the central processing unit sequentially passes through the current transformer, the analog-to-digital converter, the wavelength division multiplexer connected with the optical fiber and the current magnitude on two sides of the digital-to-analog converter receiving circuit to be analyzed, controls the relay to trigger the alarm to give an alarm according to an analysis result, feeds back the analysis result to the cloud server to perform remote control, gives an alarm in time, does not need field maintenance, and is safe and reliable.

Example two

An embodiment of the utility model provides a 5G light difference protection device, including foretell 5G light difference protection circuit.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Moreover, the technical solutions in the embodiments can be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

It should also be noted that in the description of the present specification, reference to the description of the term "one embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A 5G optical differential protection circuit, the protection circuit comprising: the voltage stabilizer, the central processing unit, the digital-to-analog converter, the wavelength division multiplexer, the analog-to-digital converter and the mutual inductor are electrically connected in sequence;

2. The 5G optical differential protection circuit of claim 1, further comprising an optical 5G communication module;

3. The 5G optical difference protection circuit according to claim 1, further comprising a relay electrically connected to the CPU, wherein the relay controls an external device controlled by the relay according to a detection result of the CPU.

4. The 5G optical difference protection circuit according to claim 3, further comprising an alarm, wherein the alarm is electrically connected to the relay, and the central processing unit triggers the alarm to give an alarm by grounding an inductive coil inductive switch of the relay.

5. The 5G optical difference protection circuit of claim 1, wherein the transformer is a current transformer of current type, and the voltage regulator is an LDO linear voltage regulator for maintaining a stable operating voltage of the central processing unit.

6. A5G optical differential protection device, comprising the 5G optical differential protection circuit according to any one of claims 1-5.