CN213243554U - Bus wiring structure - Google Patents
Bus wiring structure Download PDFInfo
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- CN213243554U CN213243554U CN202020518310.3U CN202020518310U CN213243554U CN 213243554 U CN213243554 U CN 213243554U CN 202020518310 U CN202020518310 U CN 202020518310U CN 213243554 U CN213243554 U CN 213243554U
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- cabinet
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- circuit breaker
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- 238000002955 isolation Methods 0.000 claims abstract description 48
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000011218 segmentation Effects 0.000 abstract description 17
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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Abstract
The utility model discloses a bus connection structure, at least, including first generating line and second generating line, first segmentation circuit breaker cabinet and second segmentation circuit breaker cabinet, first segmentation isolation cabinet and second segmentation isolation cabinet, first generating line first end is connected to first segmentation circuit breaker cabinet first end, first segmentation circuit breaker cabinet second end is connected to first segmentation isolation cabinet first end, second generating line first end is connected to first segmentation isolation cabinet second end, first generating line second end is connected to second segmentation isolation cabinet first end, second segmentation isolation cabinet second end is connected to second segmentation circuit breaker cabinet second end, wherein first, second segmentation circuit breaker cabinet and first, the use of mounted position can be exchanged to the second segmentation isolation cabinet. The utility model discloses when can improve the power supply capacity of bus connection structure in whole electric wire netting, improve bus connection's stability and reliability.
Description
Technical Field
The utility model belongs to the technical field of the electric power technique and specifically relates to a bus-bar connection structure is related to.
Background
The power distribution network planning is a key link for power grid transformation and construction, and is structurally characterized in that the power distribution network planning is directly connected with users as the tail end of a power grid and can reflect the power consumption requirements of the users in various aspects. With the increasing demand of users on the reliability of power supply, power distribution network planning gets more and more attention of people.
At present, the planning work of a power distribution grid has an important power market condition for the structure and operation optimization of the whole power system, the bus transformation of a transformer substation is an important item, and the whole power grid can be safely and stably operated only by ensuring the normal and stable wiring of the transformer substation bus, so that the reliability of the whole power grid is improved, and finally, a continuous and stable power supply can be provided for users and enterprises.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a bus connection structure can improve bus connection structure's stability and reliability when the power supply capacity in whole electric wire netting.
In a first aspect, an embodiment of the present invention provides a bus bar connection structure: the method comprises the following steps:
a bus bar including at least a first bus bar and a second bus bar;
the circuit breaker comprises a sectional circuit breaker cabinet and a sectional isolation cabinet, wherein the sectional circuit breaker cabinet is divided into a first sectional circuit breaker cabinet and a second sectional circuit breaker cabinet, and the sectional isolation cabinet is divided into a first sectional isolation cabinet and a second sectional isolation cabinet;
the first end of the first sectional breaker cabinet is connected with the first end of the first bus, the first end of the first sectional isolation cabinet is connected with the second end of the first sectional breaker cabinet, the second end of the first sectional isolation cabinet is connected with the first end of the second bus, the first end of the second sectional isolation cabinet is connected with the second end of the first bus, the first end of the second sectional breaker cabinet is connected with the second end of the second sectional isolation cabinet, and the second end of the second sectional breaker cabinet is connected with the second end of the second bus;
or the like, or, alternatively,
the first end of the first sectional isolation cabinet is connected with the first end of the first bus, the first end of the first sectional breaker cabinet is connected with the second end of the first sectional isolation cabinet, the second end of the first sectional breaker cabinet is connected with the first end of the second bus, the first end of the second sectional breaker cabinet is connected with the second end of the first bus, the first end of the second sectional isolation cabinet is connected with the second end of the second sectional breaker cabinet, and the second end of the second sectional isolation cabinet is connected with the second end of the second bus.
The utility model discloses bus connection structure has following beneficial effect at least: can form ring structure through double bus, when improving the power supply capacity of bus connection structure in whole electric wire netting, improve bus connection's stability and reliability.
According to other embodiments of the bus bar connection structure of the present invention,
the first bus comprises a plurality of sections of sub-buses, and the plurality of sections of sub-buses of the first bus are sequentially connected through a first connecting part;
the second bus comprises a plurality of sections of sub-buses, and the plurality of sections of sub-buses of the second bus are sequentially connected through a second connecting part.
The utility model discloses bus connection structure has following beneficial effect at least: the reliability of bus connection can be further improved, and the integral operation of the power grid cannot be influenced when a fault occurs in any bus or any section of sub-bus.
According to the utility model discloses a bus connection structure of other embodiments, first adapting unit, second adapting unit all include at least one segmentation circuit breaker cabinet and at least one segmentation isolation cabinet.
The utility model discloses bus connection structure has following beneficial effect at least: the sectional breaker cabinet and the sectional isolation cabinet are jointly used, so that the bus connection can be conveniently overhauled when a fault occurs, and the overhauling safety is guaranteed.
According to the utility model discloses a bus connection structure of other embodiments still includes the main transformer, the main transformer connects the generating line for provide the electric energy.
The utility model discloses bus connection structure has following beneficial effect at least: can provide the bus with the voltage within a reasonable voltage range
According to the utility model discloses a bus connection structure of other embodiments, main transformer respectively with first generating line, second generating line pass through the third adapting unit and connect.
The utility model discloses bus connection structure has following beneficial effect at least: the main transformer can be connected with different buses, so that the fault tolerance of the bus wiring structure is improved, and one bus can be switched to another bus in time when a fault occurs.
According to the utility model discloses a bus connection structure of other embodiments, third adapting unit includes two at least segmentation circuit breaker cabinets and two at least segmentation isolation cabinets.
The utility model discloses bus connection structure has following beneficial effect at least: the connection between each bus and the main transformer can be simultaneously established, the segmented circuit breaker cabinet and the segmented isolation cabinet are jointly used, the bus and the transformer can be conveniently overhauled when a fault occurs, and the overhauling safety is guaranteed.
According to the utility model discloses a bus connection structure of other embodiments still includes two at least PT cabinets, the PT cabinet is connected first generating line and/or second generating line.
The utility model discloses bus connection structure has following beneficial effect at least: the bus voltage can be detected and the bus protection function can be realized.
According to the utility model discloses a bus connection structure of other embodiments still includes two at least condenser cabinets, two at least outgoing lines cabinets, two at least ground connection and becomes the cabinet, the condenser cabinet outgoing lines cabinet ground connection becomes the cabinet and all connects first generating line and/or second generating line.
The utility model discloses bus connection structure has following beneficial effect at least: the capacitor cabinet can provide reactive compensation for the load that the bus connects, and the cabinet of being qualified for the next round of competitions can follow the bus and distribute the electric energy for corresponding load, and the effect that the ground connection becomes the cabinet and can play the earth connection improves bus connection structure's factor of safety.
Drawings
Fig. 1 is a schematic wiring diagram of an embodiment of a bus bar wiring structure according to the present invention;
fig. 2A-2B are wiring structure diagrams of an embodiment of a bus bar wiring structure according to the present invention.
Detailed Description
The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
In an embodiment of the present invention, referring to fig. 1, a wiring diagram of a specific embodiment of a bus wiring structure in an embodiment of the present invention is shown; specifically, the bus bar connection structure in this embodiment includes a bus bar, and the bus bar includes at least a first bus bar 100 and a second bus bar 200; the sectional insulated cabinet comprises at least a first sectional insulated cabinet 410 and a second sectional insulated cabinet 420; the segmented circuit breaker cabinet comprises at least a first segmented circuit breaker cabinet 310 and a second segmented circuit breaker cabinet 320; wherein, the first end of the first sectional breaker cabinet 310 is connected to the first end of the first bus 100; a first end of the first sectional isolation cabinet 410 is connected with a second end of the first sectional breaker cabinet 310, and a second end of the first sectional isolation cabinet 410 is connected with a first end of the second bus bar 200; a first end of the second sectional isolation cabinet 420 is connected with a second end of the first bus bar 100; the first end of the second sectional breaker cabinet 320 is connected to the second end of the second sectional isolation cabinet 420, and the second end of the second sectional breaker cabinet 320 is connected to the second end of the second bus bar 200.
It can be understood that, for example, the first end of the first bus bar 100 is connected to the first end of the first sectionalizing cabinet 410, the second end of the sectionalizing cabinet 410 can be connected to the first sectionalizing cabinet 310, the second end of the first sectionalizing cabinet 310 is connected to the first end of the second bus bar 200, and the connection manner is also suitable for the second end of the first bus bar 100 and the second end of the second bus bar 200, which is not described herein again, and it can also be understood that the sectionalizing cabinet and the sectionalizing cabinet can be used in combination, and the positions can be interchanged and used.
The bus 100 and the bus 200 are connected through the sectional isolation cabinet and the sectional breaker cabinet, so that the low-voltage side electric equipment side can not be powered off when the buses are switched, and as can be understood, the sectional cabinet mode is adopted, and the sectional breaker cabinet mainly plays the roles of breaking and connecting a double-bus power supply loop. For example, if two buses supply power at two points of the power distribution cabinet at the same time, a short circuit phenomenon can be generated, in order to prevent the power supply short circuit of the two buses, one bus is also prevented from being powered off, and a short circuit is caused when the other bus is put into use.
The final purpose of this embodiment is that can realize improving the stability and the reliability of bus connection when improving the power supply capacity of bus connection structure in whole electric wire netting through increasing bus and bus ring and connecting.
In another embodiment of the present invention, referring to fig. 2A-2B, wherein fig. 2B is an extension portion of fig. 2A, in order to facilitate the combination of fig. 2A and 2B, the reference numbers 1C and 2C on the bus are used as extension points, this embodiment further includes a main transformer on the basis of the previous embodiment, the main transformer connects the bus, in order to facilitate understanding of the present invention, the present embodiment is performed by taking four transformers as an example, specifically, the main transformer 1, the main transformer 2, the main transformer 3, the main transformer 4, the high-voltage side of the main transformer is 220kV voltage, the bus side of the main transformer is 10kV voltage, and the voltage meeting the safety standard is provided for the electric equipment.
In another embodiment of the present invention, on the basis of the above embodiment, the present embodiment segments the first bus bar 100 and the second bus bar 200, so as to further increase the reliability of the bus bar connection, and when any bus bar or any primary-secondary line fails, the power supply to the electric equipment is not affected. The first bus 100 and the second bus 200 are equally divided into a plurality of sub-buses, wherein the sub-buses of the first bus 100 are sequentially connected through a first connecting component, the sub-buses of the second bus 200 are sequentially connected through a second connecting component, in this embodiment, each bus is divided into four sub-buses, specifically, the first bus 100 is divided into a sub-bus 100A, a sub-bus 100B, a sub-bus 100C and a sub-bus 100D, the second bus 200 is divided into a sub-bus 200A, a sub-bus 200B, a sub-bus 200C and a sub-bus 200D, wherein the sub-bus 100A and the sub-bus 200A are respectively connected with the main transformer 1, the sub-bus 100B and the sub-bus 200B are respectively connected with the main transformer 2, the sub-bus 100C and the sub-bus 200C are respectively connected with the main transformer 3, the sub-bus 100D and the sub-bus 200D are respectively connected with the main transformer 4, and the main transformer 100A, the sub-bus 100B, the, The sub-bus 100C and the sub-bus 100D are connected in sequence, and the sub-bus 200A, the sub-bus 200B, the sub-bus 200C and the sub-bus 200D are connected in sequence.
The first connecting part and the second connecting part respectively comprise at least one sectionalized breaker cabinet and at least one sectionalized isolation cabinet.
When the buses operate in a subsection mode, the buses are connected with the subsection isolation cabinet through the subsection circuit breaker cabinet. In specific practical application, it should be ensured that the isolation handcart of the sectional breaker cabinet can be moved away from the working position only when the circuit breaker of the sectional breaker cabinet is disconnected and is in the moving-away position, otherwise, the circuit breaker handcart of the sectional breaker cabinet can be pushed into the working position only when the isolation handcart of the sectional breaker cabinet is pushed into the working position and is in the working position, and then the circuit breaker handcart is closed.
Main transformers 1, 2, 3, and 4 are connected to first bus 100 and second bus 200, respectively, via third connection members.
The third connecting part includes at least two sectionalizing circuit breaker cabinets 300 and at least two sectionalizing circuit breaker cabinets 400.
The sectionalizing insulated cabinet 400 in this embodiment may be referred to as an incoming line insulated cabinet: in the embodiment, a metering cabinet is added in front of the incoming line cabinet, and if a cable needs to be arranged at a connecting part on the metering cabinet, a cabinet connected with the cable is added, namely an incoming line isolation cabinet; it can be understood that the sectional breaker cabinet 300 is formed by adding a breaker in the sectional isolation cabinet 400, and the main function of the sectional breaker cabinet is to provide an obvious disconnection point, so that the incoming breaker and the current transformer can be conveniently overhauled. From the convenience of maintenance and from the probability of failure, the current transformer generally does not need to be maintained in this embodiment, and at this time, the sectionalizer 300 is only required to be taken out for maintenance.
It can be understood that the embodiment further includes at least two PT cabinets in real application, and the PT cabinets connect one or two of the first busbar 100 and the second busbar 200.
Wherein, the PT cabinet is voltage transformer and arrester cabinet, is the lug connection on the bus in this embodiment to realize detecting bus voltage and realizing bus protection function, PT cabinet internally mounted in this embodiment has voltage transformer, keeps apart sword, fuse and arrester, and the primary function includes following specific four aspects:
1. voltage measurement, providing a voltage loop of the measuring meter;
2. can provide operation and control power;
3. arranging an overvoltage protector for each section of bus;
4. and relay protection is realized, such as bus insulation, overvoltage, undervoltage and the like.
However, the PT cabinet is not limited to the installation of the above devices, and the installation configuration may be performed according to practical application scenarios.
It can be understood that the present embodiment further includes at least two capacitor cabinets 700, at least two outgoing line cabinets 500, and at least two grounding transformer cabinets 600 in practical applications, where the capacitor cabinets 700, the outgoing line cabinets, and the grounding transformer cabinets are all connected to one or two of the first bus bar 100 and the second bus bar 200.
The capacitor box 700 has the main functions of improving the power factor, reducing the reactive loss and improving the utilization rate of the equipment.
Specifically, the capacitor box 700 in this embodiment mainly includes a cabinet body, a fuse, an isolating switch fuse set, a capacitor contactor, a lightning arrester, a capacitor, a reactor, a wire, a terminal strip, a power factor automatic compensation control device, and a panel instrument, but is not limited to the above components, and can be customized according to an actual application scenario.
The outgoing line cabinet 500 mainly comprises equipment for distributing electric energy, a main path of the electric energy is from a bus to each outgoing line, and the main purpose is to provide an electric energy interface for electric equipment or loads.
In the outlet cabinet 500 of the present embodiment, the number of circuits connected to the buses is increased, for example, four main transformers and three-phase power are used, wherein the capacity of the main transformers is 240MVA according to factory specifications, and a common bus connection structure of the four main transformers can only bear 30 outlet circuits at most, wherein the main transformer 1, the main transformer 2 and the main transformer 3 are respectively connected to 10 outlet circuits, and the main transformer 4 is not connected to a circuit, whereas the bus connection structure in the present embodiment can be connected to 80 outlet circuits, specifically, there are two buses in the present embodiment, each bus has 8 sub-buses, each sub-bus can be connected to 10 outlet circuits, that is, can be connected to 80 outlet circuits, so the bus connection structure in the present embodiment has a greater power distribution capability,
wherein, grounding transformer cabinet 600 guarantees the power consumption safety of the whole bus connection structure distribution side in order to prevent electric leakage and electric shock accidents.
By combining the embodiment and the combination of the embodiment, the problem of insufficient power supply and distribution in the peak period of power utilization of the electric equipment is solved, the power supply capacity of the low-voltage side is improved, and the function of the 220kV transformer substation is expanded equivalently.
The total number of the buses, the total number of the sub-buses and the related power distribution cabinets of various types in the embodiment can be configured or installed according to actual application scenes.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020518310.3U CN213243554U (en) | 2020-04-09 | 2020-04-09 | Bus wiring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020518310.3U CN213243554U (en) | 2020-04-09 | 2020-04-09 | Bus wiring structure |
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|---|---|
| CN213243554U true CN213243554U (en) | 2021-05-18 |
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| CN202020518310.3U Active CN213243554U (en) | 2020-04-09 | 2020-04-09 | Bus wiring structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490547A (en) * | 2020-04-09 | 2020-08-04 | 深圳供电规划设计院有限公司 | Bus wiring structure |
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2020
- 2020-04-09 CN CN202020518310.3U patent/CN213243554U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490547A (en) * | 2020-04-09 | 2020-08-04 | 深圳供电规划设计院有限公司 | Bus wiring structure |
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