CN210404265U

CN210404265U - Switching device for power grid concentrator local module interface conversion

Info

Publication number: CN210404265U
Application number: CN201920876992.2U
Authority: CN
Inventors: 沙舟
Original assignee: China Electric Power Internet Co ltd
Current assignee: China Electric Power Internet Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-24
Anticipated expiration: 2029-06-11

Abstract

The embodiment of the utility model discloses switching device for conversion of local module interface of electric wire netting concentrator relates to the power electronics field, can save BOM cost and the production cost of prepareeing material, raises the efficiency. The utility model discloses a: the front face of the switching device is provided with a weak current interface 1 of a local module of the south network concentrator and a strong current interface 2 of the local module of the south network concentrator; a weak current switching interface 3 and a strong current switching interface 4 are arranged on the back of the switching device; and an interface of the national grid concentrator local module is connected to a conversion circuit through the switching interface, and the conversion circuit is connected to the south grid concentrator local module. The utility model is suitable for a local module test scene of electric power system of checking meter.

Description

Switching device for power grid concentrator local module interface conversion

Technical Field

The invention relates to the field of power electronics, in particular to a switching device for interface conversion of a local module of a power grid concentrator.

Background

At present, a concentrator local module has two modes of a national network and a south network, and is respectively suitable for power grid systems in different regions. The two systems have different structural appearances and interface definitions and different protocol conventions.

Particularly, in a local module test scene of the power meter reading system, production stock of two power grid systems needs to be prepared, and for module test equipment providers, only two sets of schemes can be designed and provided for concentrator local modules of the two different systems, which is time-consuming and labor-consuming.

Disclosure of Invention

The embodiment of the invention provides a switching device for power grid concentrator local module interface conversion, which can save BOM cost and production and material preparation cost and improve efficiency.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the system mainly comprises three parts, namely a transfer interface, a south network concentrator local module interface, a conversion circuit and the like.

The switching interface comprises a weak current switching interface and a strong current switching interface; the local module interface of the south network concentrator comprises a weak current interface and a strong current interface. The adapter interface is used for connecting a local module interface of the national network concentrator; the south network concentrator local module interface is used for accessing a south network concentrator local module; the conversion circuit realizes the conversion of the local module interface of the state network concentrator into the local module interface of the south network concentrator.

In the practical application of this embodiment, only need provide the local module test interface of national grid concentrator, can pass through switching device, realize the local module test of south grid concentrator, easy operation, it is convenient to use, and can save BOM (Bill of material Bill of materials) cost and production cost of prepareeing material greatly, raise the efficiency.

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 embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a side view of a switching device for interface conversion of a local module of a power grid concentrator according to an embodiment of the present invention;

fig. 2 is a top view of a switching device for interface conversion of a local module of a power grid concentrator according to an embodiment of the present invention;

fig. 3 is a bottom view of the adapter for interface conversion of the local module of the power grid concentrator according to the embodiment of the present invention;

fig. 4 is a schematic design diagram of a switching device for interface conversion of a local module of a power grid concentrator according to an embodiment of the present invention;

fig. 5 is a functional block diagram of a conversion process of the switching device for power grid concentrator local module interface conversion according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

An embodiment of the present invention provides a switching device for interface conversion of a local module of a power grid concentrator, as shown in fig. 1, 2, and 3, a weak electrical interface 1 of the local module of the south grid concentrator and a strong electrical interface 2 of the local module of the south grid concentrator are disposed on a front surface of the switching device.

And a weak current switching interface 3 and a strong current switching interface 4 are arranged on the back surface of the switching device.

And an interface of the national grid concentrator local module is connected to a conversion circuit through the switching interface, and the conversion circuit is connected to the south grid concentrator local module.

The pins of the switching interface except the serial port pin are connected to the pin of the weak current interface 1 of the local module of the south network concentrator and the pin of the strong current interface 2 of the local module of the south network concentrator through the switching circuit.

For example: in the schematic design diagram shown in fig. 4, the corresponding functional pins of the transfer interface, except for the serial port pin, are adjusted in position by the conversion circuit according to the definition of the weak electrical interface of the local module of the south network concentrator, and are directly connected to the weak electrical interface pin (as denoted by 1 in fig. 4) and the strong electrical interface pin (as denoted by 2 in fig. 4) of the local module of the south network concentrator. The definition of the weak current interface of the local module of the south network concentrator is shown in table 1:

TABLE 1

The definition of the weak current interface of the local module of the national grid concentrator is shown in table 2:

TABLE 2

Specifically, the weak current interface 5 of the local module of the national grid concentrator is connected to the weak current transfer interface 3. The strong electric interface 6 of the national grid concentrator local module is connected to the strong electric switching interface 4. For example, first, the weak electrical interface pin (as denoted by 5 in fig. 4) and the strong electrical interface pin (as denoted by 6 in fig. 4) of the local module of the national grid concentrator are respectively connected to the weak electrical switching interface (as denoted by 3 in fig. 4) and the strong electrical switching interface (as denoted by 4 in fig. 4) of the switching device.

And a serial port pin of the local module of the national grid concentrator is converted into a serial port signal of the local module of the south grid concentrator through a level conversion circuit 7.

As shown in the functional block diagram of the conversion process in fig. 5, the interface of the local module of the national grid concentrator is connected to the interface of the local module of the national grid concentrator through the switching interface, and the pin position adjustment and the serial port level conversion are realized through the conversion circuit, so that the interface of the local module of the national grid concentrator is converted into the interface of the local module of the south grid concentrator. In this embodiment, the serial pin (3.3VTTL level) of the local module of the national grid concentrator is converted into the serial signal (5VTTL level) of the local module of the south grid concentrator through the level conversion circuit (as denoted by reference numeral 7 in fig. 4), so that the conversion of the interface of the local module of the national grid concentrator into the interface of the local module of the south grid concentrator is realized.

In the definition of the weak current interfaces of the local modules of the concentrators of the national grid and the south grid, the strong current interfaces of the local modules of the concentrators of the national grid and the south grid are consistent, and the weak current interfaces are different in structural appearance and interface definition, however, the interfaces of the local modules of the concentrators of the two systems are basically consistent in the definition of the power supply voltage and the functions of other pins except the position, the number and the level of the pins.

Based on the characteristic, the embodiment designs the switching device for converting the interface of the local module of the state network concentrator into the interface of the local module of the south network concentrator, and the switching device is directly applied to configuration and query of the local module of the concentrator of the power meter reading system or functional test of the local module.

The utility model discloses mainly include triplex such as switching interface, south net concentrator local module interface and converting circuit. The switching interface comprises a weak current switching interface and a strong current switching interface; the local module interface of the south network concentrator comprises a weak current interface and a strong current interface. The adapter interface is used for connecting a local module interface of the national network concentrator; the south network concentrator local module interface is used for accessing a south network concentrator local module; the conversion circuit realizes the conversion of the local module interface of the state network concentrator into the local module interface of the south network concentrator.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, it is relatively simple to describe, and reference may be made to some descriptions of the method embodiment for relevant points.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A switching device for switching the interface of a local module of a power grid concentrator is characterized in that a weak current interface (1) of a local module of a south grid concentrator and a strong current interface (2) of the local module of the south grid concentrator are arranged on the front surface of the switching device;

a weak current switching interface (3) and a strong current switching interface (4) are arranged on the back of the switching device;

and an interface of the local module of the national grid concentrator is connected to a conversion circuit through the switching interface, and the conversion circuit is connected to the local module of the south grid concentrator.

2. A switching device for grid concentrator local module interface conversion according to claim 1, characterized in that:

and connecting the pins of the switching interface except the serial port pin to the pin of a weak current interface (1) of the local module of the south network concentrator and the pin of a strong current interface (2) of the local module of the south network concentrator through the switching circuit.

3. A switching device for grid concentrator local module interface conversion according to claim 1, characterized in that:

a weak current interface (5) of the local module of the national grid concentrator is connected to the weak current switching interface (3);

and a strong electric interface (6) of the local module of the national grid concentrator is connected to the strong electric switching interface (4).

4. A switching device for grid concentrator local module interface conversion according to claim 1, characterized in that:

and a serial port pin of the local module of the national grid concentrator is converted into a serial port signal of the local module of the south grid concentrator through a level conversion circuit (7).