CN220421138U - Optical cable down-leading device and indoor transformer station system - Google Patents
Optical cable down-leading device and indoor transformer station system Download PDFInfo
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- CN220421138U CN220421138U CN202322137476.7U CN202322137476U CN220421138U CN 220421138 U CN220421138 U CN 220421138U CN 202322137476 U CN202322137476 U CN 202322137476U CN 220421138 U CN220421138 U CN 220421138U
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Abstract
The application relates to an optical cable down-draw device and an indoor substation system. The optical cable down-leading device comprises a first retention structure, a second retention structure, a first grounding wire and a second grounding wire; one end of the first grounding wire is used for connecting an OPGW optical cable, and the other end of the first grounding wire is used for connecting a grounding network of an indoor transformer substation through a first retention structure at a first connecting point; the first end of the second grounding wire is used for connecting an OPGW optical cable, and the second end of the second grounding wire is used for connecting a grounding network of the indoor transformer substation at a second connection point through a second retention structure; the second connection point is arranged on a side wall floor slab of the power distribution device building; the first connection point and the second connection point are located differently. Through first location structure and second location structure, reliably be connected earth connection and indoor transformer substation, the position that sets up first tie point and second tie point simultaneously is different, and the second tie point is located on the distribution unit building side wall floor, accords with relevant standard requirement, and the downlead device security that this application provided is better.
Description
Technical Field
The application relates to the technical field of power equipment, in particular to an optical cable down-leading device and an indoor transformer substation system.
Background
OPGW (Optical fiber composite overhead groundwires, optical fiber composite overhead ground wire) optical cable has the dual functions of lightning protection ground wire and communication optical cable. The OPGW optical cable has the remarkable characteristics of high reliability, excellent mechanical property, good economy and the like, and is widely applied to 110kV and above circuits.
Currently, the OPGW optical cable lead-in device of the indoor transformer substation in the prior art has potential safety hazards.
Disclosure of Invention
In view of the above, it is necessary to provide a high-safety optical cable down-draw device and an indoor substation system.
In one aspect, an embodiment of the present application provides an optical cable down-feeding device, including:
a first retention structure;
a second retention structure;
a first ground line; one end of the first grounding wire is used for connecting an OPGW optical cable, and the other end of the first grounding wire is used for connecting a grounding network of an indoor transformer substation through a first retention structure at a first connecting point;
a second ground line; the first end of the second grounding wire is used for connecting an OPGW optical cable, and the second end of the second grounding wire is used for connecting a grounding network of the indoor transformer substation at a second connection point through a second retention structure; the second connection point is arranged on a side wall floor slab of the power distribution device building; the first connection point and the second connection point are located differently.
In one embodiment, the first connection point is located inside the parapet wall.
In one embodiment, the system further comprises a first guide fiber optic cable and a closure;
one end of the second grounding wire is connected with the OPGW optical cable through the first guiding optical cable, and the second end of the second grounding wire is connected with a grounding network of the indoor transformer substation through the splice closure and the first retention structure in sequence.
In one embodiment, a second guiding fiber optic cable is also included; the third end of the second grounding wire is connected with one end of the second guiding optical cable; the other end of the second guiding optical cable is connected into the communication machine room through the secondary control cable trench.
In one embodiment, the device further comprises a first fixing component; the first fixing component is used for fixing the first guide optical cable on the side wall floor slab of the power distribution unit building.
In one embodiment, the first connection point is provided on a side wall floor of the electrical distribution unit.
In one embodiment, a third guide fiber optic cable is also included;
the first end of the second ground wire is connected to the OPGW cable through a third guide cable.
In one embodiment, a second securing assembly is also included; the second fixing component is used for fixing the first grounding wire and the third guide optical cable on the side wall floor slab of the power distribution device building.
On the other hand, the embodiment of the application also provides an indoor transformer substation system, which comprises an indoor transformer substation and the optical cable down-leading device.
In one embodiment, the cable drum further comprises a cable coiling area and a fireproof slot box; the cable coiling area is arranged around the optical cable shaft entering the machine room;
the optical cables in the stations of the indoor transformer substation, which are mutually standby, are laid in the same ditch, and the optical cables in the stations are isolated by the fireproof groove boxes.
One of the above technical solutions has the following advantages and beneficial effects:
the optical cable down-leading device comprises a first retention structure, a second retention structure, a first grounding wire and a second grounding wire; one end of the first grounding wire is used for connecting an OPGW optical cable, and the other end of the first grounding wire is used for connecting a grounding network of an indoor transformer substation through a first retention structure at a first connecting point; the first end of the second grounding wire is used for connecting an OPGW optical cable, and the second end of the second grounding wire is used for connecting a grounding network of the indoor transformer substation at a second connection point through a second retention structure; the second connection point is arranged on a side wall floor slab of the power distribution device building; the first connection point and the second connection point are located differently. Through first location structure and second location structure, reliably be connected earth connection and indoor transformer substation, the position that sets up first tie point and second tie point is different simultaneously, and the second tie point is located on the distribution device building side wall floor, accords with relevant standard requirement, compares in the downlead of the indoor GIS transformer of tradition, and the downlead security that this application provided is better.
Drawings
In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a first schematic block diagram of a fiber optic cable routing device in one embodiment;
fig. 2 is a side view of a second schematic block diagram of a fiber optic cable routing device in one embodiment.
Fig. 3 is a front view of a second schematic block diagram of a fiber optic cable routing device in one embodiment.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element.
Spatially relative terms, such as "under", "below", "beneath", "under", "above", "over" and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "below" and "under" may include both an upper and a lower orientation. Furthermore, the device may also include an additional orientation (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments should be understood as "electrical connection", "communication connection", and the like if there is transmission of electrical signals or data between objects to be connected.
As used herein, the singular forms "a", "an" 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," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.
At present, when the OPGW optical cable enters a station to be grounded in a reliable grounding mode, at least two points of the down-leading optical cable should be grounded, and the grounding points are respectively fixed at the top end and the lower end of the framework (before the residual cables) and are reliably grounded through matched special grounding wires; the down-lead wire clamps are arranged at intervals of 1.5 m-2 m for down-lead the optical cable, and the distance between the down-lead optical cable and the tower or the frame body is not less than 50mm. The above scheme description basically aims at the description of grounding at the framework after the OPGW optical cable of the outdoor AIS (Air Insulated Switchgear, air-insulated switchgear) transformer substation enters the station, but the scheme cannot be used in an indoor GIS (Gas Insulated Switchgea, air-insulated switchgear) transformer substation, because the hanging point of the OPGW optical cable of the indoor GIS transformer substation is arranged on the roof wall (wall of a building of a power distribution device, a hook is arranged on the wall), and the incoming framework is not generally arranged, so that the grounding cannot be performed according to the scheme. The indoor GIS substations are generally arranged at the roof of the distribution device building by the overhead wires of the main network, and the hooks arranged by the building are used as hanging points for leading the ground wires to enter the building, but the roof of the distribution device building is basically not provided with grounding points of the ground wires, so that the voltage equalizing belts of the roof of the building are selected as grounding points by the first grounding points and the second grounding points after the OPGW optical cables of a plurality of indoor substations enter the building, and the method does not meet the related specification requirements.
The optical cable down-leading device provided by the application can solve the problems.
In one embodiment, as shown in FIG. 1, there is provided a fiber optic cable down-draw apparatus comprising:
a first retention structure 10;
a second retention structure 20;
a first ground line 30; one end of the first ground wire 30 is used for connecting the OPGW optical cable 100, and the other end is used for connecting the ground network 200 of the indoor substation through the first retention structure 10 at the first connection point 301;
a second ground line 40; the first end of the second ground wire 40 is used for connecting the OPGW optical cable 100, and the second end is used for connecting the ground network 200 of the indoor substation through the second retention structure 20 at the second connection point 401; the second connection point 401 is arranged on a side wall floor slab of the power distribution device building; the first connection point 301 and the second connection point 401 are located differently.
Wherein the retention structure is for a reliable connection to be made. In one particular example, the retention structure includes a ground clip and a round steel. The ground wire clamp is used for restraining the ground wire and the OPGW optical cable together, and the round steel is used for welding the ground wire and the OPGW optical cable together. Round steel can be round steel with the diameter of 20 mm. The ground wire may be a dedicated ground wire for OPGW optical cable. The connection point may also be referred to as a ground point, which is mainly used for a reliable connection with the substation ground network. The second connection point is arranged at the position of 500mm high of the side wall floor slab of the power distribution unit building.
The optical cable down-leading device comprises a first retention structure, a second retention structure, a first grounding wire and a second grounding wire; one end of the first grounding wire is used for connecting an OPGW optical cable, and the other end of the first grounding wire is used for connecting a grounding network of an indoor transformer substation through a first retention structure at a first connecting point; the first end of the second grounding wire is used for connecting an OPGW optical cable, and the second end of the second grounding wire is used for connecting a grounding network of the indoor transformer substation at a second connection point through a second retention structure; the second connection point is arranged on a side wall floor slab of the power distribution device building; the first connection point and the second connection point are located differently. Through first location structure and second location structure, reliably be connected earth connection and indoor transformer substation, the position that sets up first tie point and second tie point simultaneously is different, and the second tie point is located on the distribution device building side wall floor, compares in the downdraw device of the indoor GIS transformer of tradition, and the downdraw device security that this application provided is better. The problem of grounding is conducted through the downward-leading grounding problem after the OPGW optical cable of the indoor GIS substation enters the station, a set of optimization schemes are formulated under the condition that the technical files such as relevant regulations and specifications are met, the problem of grounding after the OPGW optical cable of the indoor GIS substation enters the station is properly solved, and reliable technical guidance and support are provided for construction and installation of the OPGW optical cable of the new indoor GIS substation of the power grid.
With continued reference to fig. 1, in one embodiment, the first connection point 301 is disposed inside the parapet wall. Specifically, the first connection point is arranged on the inner side of the parapet of the roof, the second connection point is arranged on the side wall floor of the power distribution device, so that maintenance is facilitated, lightning stroke is reduced, and meanwhile, the weathering speed is reduced.
Further, in one embodiment, the first guiding fiber optic cable 50 and the closure 60 are also included;
one end of the second ground wire 40 is connected to the OPGW optical cable 100 through the first guide optical cable 50, and the second end is connected to the ground network 200 of the indoor substation through the splice closure 60 and the first retention structure 10 in sequence.
In one embodiment, a second guide fiber optic cable 70 is also included; a third end of the second ground wire 40 is connected to one end of the second guiding optical cable 70; the other end of the second guiding fiber optic cable 70 is accessed into the telecommunications room through a secondary control cable duct.
Specifically, the OPGW optical cable is connected with the second guide optical cable through the connection box, the guide optical cable passes through the wall and enters the indoor secondary control cable trench (phi 50 galvanized steel pipe and phi 32PE plastic pipe protection), the guide optical cable is protected by the phi 32PE plastic pipe after entering the secondary control cable trench, and finally enters the communication machine room through the secondary control cable trench.
Furthermore, when the phi 50 galvanized steel pipe penetrates through the wall, the bent part at the inner side is slightly inclined upwards, so that rainwater can be effectively prevented from entering an indoor secondary control cable trench through the guide optical cable; the pipe orifices at the two ends of the galvanized steel pipe are all plugged by adopting rainproof fireproof blocking materials. All turns have a bend radius not less than 25 cable diameters.
In one embodiment, a first securing assembly 80 is also included; the first fixing assembly 80 is used for fixing the first guide optical cable to the side wall floor of the power distribution device building.
Specifically, the first fixing assembly may include using expansion bolts, insulators, and down-clamps. When the side wall of the power distribution device is led down, the first guide optical cable is fixed on the side wall of the power distribution device at intervals of about 1.5-2 meters through the expansion bolts, the insulators and the leading-down wire clamps.
In one embodiment, as shown in fig. 2 and 3, the first connection point 301 is provided on a side wall floor of the switchgear building. Specifically, the first connection point and the second connection point are arranged on the side wall floor slab of the power distribution device building, so that maintenance is facilitated, lightning stroke is reduced, and meanwhile, the weathering speed is reduced.
In one embodiment, a third guide fiber optic cable is also included;
the first end of the second ground wire 40 is connected to the OPGW optical cable 100 through the third guide optical cable 90.
In particular, the guide fiber optic cable is also referred to as a guide fiber optic cable or a guide fiber optic cable. Its main function is to provide an accurate guiding and transmission path for the optical signal in a specific scenario, so that the optical signal is transmitted along a predetermined path to the target location.
In one embodiment, a second securing assembly 95 is also included; the second fixing assembly 95 is used to fix the first ground wire 30 and the third guide optical cable 90 to the switchgear building sidewall floor.
In particular, the second securing assembly may include the use of expansion bolts, insulators, and down-clamps. When the side wall of the power distribution unit is led down, the first grounding wire and the third guiding optical cable are fixed on the side wall of the power distribution unit through expansion bolts, insulators and leading-down clamps every 1.5-2 meters.
In one embodiment, the embodiment of the application also provides an indoor substation system, which comprises an indoor substation and the optical cable downdraw device.
In one embodiment, the cable drum further comprises a cable coiling area and a fireproof slot box; the cable coiling area is arranged around the optical cable shaft entering the machine room;
the optical cables in the stations of the indoor transformer substation, which are mutually standby, are laid in the same ditch, and the optical cables in the stations are isolated by the fireproof groove boxes.
Specifically, according to the design rule DL/T5518-2016 of communication optical cables in power engineering plant stations, the surplus length of the optical cables is accommodated in the incoming line space of the cabinet body foundation. Because the space in the cabinet body and the bottom of the cabinet body can not meet the requirement of residual cable coiling, a special cable coiling area is arranged near the optical cable vertical shaft entering the machine room, and the residual cable of a single optical cable is not less than 4.3 meters.
Aiming at the situation that the framework guides down the optical cable to the cable trench, the direct-buried mode is easily damaged by the error of external force, and the optical cable trench laying mode is changed. The small groove of the optical cable is preferably arranged below the framework and close to the enclosing wall, and the specification is not less than 200mm by 300mm (width by depth).
For the optical cable laying path in the station, for 2 optical cables which are standby, independent routing laying should be separated, 110kV and above substations should be arranged, for the optical cable in the station at the 500kV/220kV line side, at least 2 mutually independent optical cable channels should be arranged to enter the communication optical cable distribution frame, and for the optical cable in the station at the 110kV line side, at least 2 mutually independent optical cable channels should be arranged to enter the communication optical cable distribution frame in the machine room. For the situation that the requirements cannot be met, fireproof metal groove boxes are arranged at the same channel and the intersection and are reliably grounded, and 2 optical cables which are mutually backed up are isolated.
For the distribution network optical cable in the 10kV outgoing side station, an optical cable channel is reserved to enter a communication optical cable distribution frame in a machine room.
When the optical cable laid in the same channel with the power cable or the cable in the pipe ditch is more, the communication optical cable should be laid at the uppermost layer of the bracket.
For a plurality of optical cables laid in the same route, flame-retardant PE protection pipes with different colors are adopted for distinguishing.
For the pipeline optical cable in the station, the optical cable signboard is arranged near the pipeline ditch, for the straight line channel, the signboard is arranged every 20 meters, and the optical cable direction signboard is added at the corner and the branching position. The sign should mark the start point and the end point of the optical cable in detail, and the sign should be added when a plurality of optical cables are laid along the same route.
In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "desired embodiments," and the like, 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 utility model. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. An optical cable drop device, comprising:
a first retention structure;
a second retention structure;
a first ground line; one end of the first grounding wire is used for connecting an OPGW optical cable, and the other end of the first grounding wire is used for connecting a grounding network of an indoor transformer substation through the first retention structure at a first connecting point;
a second ground line; the first end of the second grounding wire is used for being connected with the OPGW optical cable, and the second end of the second grounding wire is used for being connected with a grounding network of the indoor substation through the second retention structure at a second connection point; the second connection point is arranged on a side wall floor slab of the power distribution device building; the first connection point and the second connection point are located at different positions.
2. The fiber optic cable routing device of claim 1, wherein the first connection point is located inside a parapet wall.
3. The fiber optic cable routing device of claim 2, further comprising a first guide fiber optic cable and a closure;
one end of the second grounding wire is connected with the OPGW optical cable through the first guiding optical cable, and the second end of the second grounding wire is connected with the grounding network of the indoor transformer substation through the splice closure and the first retention structure in sequence.
4. The fiber optic cable routing device of claim 3, further comprising a second guide fiber optic cable; the third end of the second grounding wire is connected with one end of the second guiding optical cable; the other end of the second guiding optical cable is connected into the communication machine room through the secondary control cable trench.
5. The fiber optic cable routing device of claim 3, further comprising a first securing assembly; the first fixing component is used for fixing the first guide optical cable on the side wall floor slab of the distribution device building.
6. The fiber optic cable routing device of claim 1, wherein the first connection point is provided on a side wall floor of a power distribution unit building.
7. The fiber optic cable routing device of claim 6, further comprising a third guide fiber optic cable;
the first end of the second ground wire is connected to the OPGW optical cable through the third guide optical cable.
8. The fiber optic cable routing device of claim 7, further comprising a second securing assembly; the second fixing component is used for fixing the first grounding wire and the third guide optical cable on the side wall floor slab of the power distribution device building.
9. An indoor substation system comprising an indoor substation and an optical cable downdraw apparatus as claimed in any one of claims 1-8.
10. The indoor substation system of claim 9, further comprising a cable area and a fire-protection trough; the cable coiling area is arranged around the optical cable shaft entering the machine room;
the stand-by optical cables in the indoor transformer substation are laid in the same ditch, and the stand-by optical cables are isolated by the fireproof groove box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322137476.7U CN220421138U (en) | 2023-08-04 | 2023-08-04 | Optical cable down-leading device and indoor transformer station system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322137476.7U CN220421138U (en) | 2023-08-04 | 2023-08-04 | Optical cable down-leading device and indoor transformer station system |
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| Publication Number | Publication Date |
|---|---|
| CN220421138U true CN220421138U (en) | 2024-01-30 |
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| CN202322137476.7U Active CN220421138U (en) | 2023-08-04 | 2023-08-04 | Optical cable down-leading device and indoor transformer station system |
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| Country | Link |
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| CN (1) | CN220421138U (en) |
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