Power distribution equipment

Abstract

The present disclosure provides a power distribution apparatus including: a first cabinet including a first extension penetrating a first face thereof; the first incoming line branch is arranged in the first cabinet and comprises a first circuit breaker and a first isolating switch which are connected in series; the first voltage transformer is arranged outside the first cabinet and is electrically connected to a contact between the first circuit breaker and the first isolation switch through a first expansion part; a second incoming line branch and an outgoing line branch; and the bus connects the first incoming line branch, the second incoming line branch and the outgoing line branch in parallel.

Description

Technical Field

[0001] This disclosure relates to electrical installations, and more specifically, to power distribution equipment. Background Technology

[0002] In power systems, when the primary power source is unable to supply power due to maintenance or failure, a secondary power source needs to be connected to the grid to provide the required power. Once the primary power source is restored, it is reconnected to the grid, and the secondary power source is disconnected. If the output parameters of the secondary power source and the primary power source are mismatched during connection or reconnection, such as asynchronous phase angles, it can lead to current surges, equipment damage, or grid instability. Therefore, it is essential to ensure that the power parameters of the power sources are matched. Furthermore, it is desirable to achieve power parameter monitoring using existing switchgear without altering its structure. Utility Model Content

[0003] To address the aforementioned problems, this disclosure provides a power distribution device, including a first cabinet with a first extension portion extending through its first side; a first incoming branch line disposed in the first cabinet and including a first circuit breaker and a first disconnecting switch connected in series; a first voltage transformer disposed outside the first cabinet and electrically connected to a contact between the first circuit breaker and the first disconnecting switch via the first extension portion; a second incoming branch line and an outgoing branch line; a busbar connecting the first incoming branch line, the second incoming branch line, and the outgoing branch line in parallel; and a second voltage transformer electrically connected to the busbar.

[0004] In one embodiment, the first cabinet also includes a second side different from the first side. The second side is the side wall of the first cabinet and the outer surface of the second side faces the second side of the first cabinet. The power distribution equipment also includes a second cabinet disposed on the second side of the first cabinet, and the outgoing branch is disposed in the second cabinet.

[0005] In one embodiment, the power distribution equipment further includes a third cabinet disposed on the second side of the first cabinet, and the second incoming branch is disposed in the third cabinet. The second cabinet is disposed between the first cabinet and the third cabinet, or the third cabinet is disposed between the first cabinet and the second cabinet.

[0006] In one embodiment, the first surface is the side wall of the first cabinet, and the power distribution equipment also includes a first voltage transformer cabinet disposed adjacent to the first surface of the first cabinet. The first voltage transformer cabinet includes a second extension corresponding to and electrically connected to the first extension of the first cabinet, and the first voltage transformer is disposed in the first voltage transformer cabinet and electrically connected to the second extension.

[0007] In one embodiment, the first voltage transformer is disposed at the top of the first cabinet.

[0008] In one embodiment, the power distribution equipment further includes a copper busbar disposed in the first cabinet and electrically connecting the first extension to the contacts between the first circuit breaker and the first disconnecting switch.

[0009] In one embodiment, the first cabinet also includes a second side different from the first side. The second side is a side wall of the first cabinet and the outer surface of the second side faces the second side of the first cabinet. The power distribution equipment also includes a second voltage transformer cabinet disposed on the second side of the first cabinet, and the second voltage transformer is disposed in the second voltage transformer cabinet.

[0010] In one embodiment, the first incoming branch is configured to receive mains power, and the second incoming branch is configured to receive power from a portable generator.

[0011] In one embodiment, a first voltage transformer is configured to measure the phase angle of mains power, and a second voltage transformer is configured to measure the phase angle of power from a portable generator.

[0012] In one embodiment, the first extension of the first cabinet includes an insulating sleeve and a conductor housed within the insulating sleeve.

[0013] The power distribution equipment disclosed herein can monitor the power parameters of the power source to improve grid stability when switching power sources, while using existing switchgear without changing the structure of the outgoing or incoming switchgear, thereby reducing costs. Attached Figure Description

[0014] The above and other features and advantages of exemplary embodiments of this disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, which are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way, wherein:

[0015] Figure 1 This is a schematic structural diagram illustrating a power distribution device according to an embodiment of the present disclosure;

[0016] Figure 2 This is a schematic circuit diagram illustrating a power distribution device according to an embodiment of the present disclosure;

[0017] Figure 3A and Figure 3B These are perspective views of a first incoming cabinet of a power distribution device according to an embodiment of the present disclosure, shown from different angles.

[0018] Figure 4 , Figure 5A and Figure 5B This is a schematic structural diagram showing some components in the first incoming cabinet of a power distribution device according to an embodiment of the present disclosure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0020] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this disclosure may have fewer components, other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0021] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Where the number of components is not specified, the number of components may be one or more; similarly, the terms “a,” “the,” “described,” and similar terms do not necessarily indicate a quantity limitation. The terms “comprising,” “including,” or “including,” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “install,” “set,” “connect,” or “link,” and similar terms are not limited to physical or mechanical installation, setting, or connection, but may include electrical installation, setting, or connection, whether direct or indirect. “Above,” “below,” “left,” “right,” etc., are used only to indicate the relative positional relationship of the equipment during use or the positional relationship shown in the accompanying drawings; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Various embodiments of this disclosure will now be described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic structural diagram showing a power distribution device 1 according to an embodiment of the present disclosure. Figure 2 This is a schematic circuit diagram showing a power distribution device 1 according to an embodiment of the present disclosure.

[0024] Reference Figure 1According to an embodiment of the present disclosure, the power distribution equipment 1 may include a first incoming branch 19, a second incoming branch 29, an outgoing branch 39, a busbar 49, a first voltage transformer 40, and a second voltage transformer 50. The busbar 49 can connect the first incoming branch 19, the second incoming branch 29, and the outgoing branch 39 in parallel.

[0025] Each of the first incoming branch 19 and the second incoming branch 29 can be configured to receive power from an external power source (e.g., a power plant, a portable generator, etc.) and distribute the power to the outgoing branch 39 via bus 49. The outgoing branch 39 can be configured to distribute the power provided by the first incoming branch 19 and / or the second incoming branch 29 to specific electrical devices or downstream distribution units.

[0026] Each of the first incoming branch 19 and the second incoming branch 29 may include a circuit breaker and a disconnecting switch. The circuit breaker performs opening and closing operations to control the connection and disconnection of the circuit during normal operation of the power system (e.g., disconnecting the power supply by opening the circuit breaker during power outage maintenance), and can disconnect the circuit in the event of faults such as short circuits or overloads in the power system to prevent damage to components in the power distribution equipment from fault currents. The circuit breaker is equipped with an arc-extinguishing device to quickly extinguish the arc when interrupting large currents, preventing equipment burnout or explosion. After the circuit breaker disconnects the circuit, the disconnecting switch provides a physical disconnect point, ensuring complete isolation between the incoming cabinet and the upstream power supply, and protecting the safety of maintenance personnel. Figure 1 As shown, the first incoming branch 19 may include a first circuit breaker 11 and a first disconnecting switch 12 connected in series.

[0027] The first incoming branch 19 can be configured to receive power from a first power source, and the second incoming branch 29 can be configured to receive power from a second power source. One of the first and second power sources can be a primary power source, and the other a backup power source. For example, when the first power source is a primary power source and needs to be disconnected from the grid due to maintenance or failure, the second power source can be connected to the grid to provide the required power in place of the first power source. After the first power source returns to normal operation, the first power source is reconnected to the grid, and the second power source is disconnected. For example, the first power source can be a mains power station, and the second power source can be a portable generator. When it is necessary to disconnect the mains power due to routine maintenance or a fault, the portable generator can be connected to the grid to provide backup power by operating the electrical components in the first and second incoming branch 19. However, this disclosure is not limited to this; for example, the first and second power sources can be different substations or different portable generators.

[0028] Reference Figure 2According to an embodiment of the present disclosure, the power distribution equipment 1 may include a first incoming cabinet 10, a second incoming cabinet 20 and an outgoing cabinet 30, and the first incoming branch 19, the second incoming branch 29 and the outgoing branch 39 may be respectively arranged in the first incoming cabinet 10, the second incoming cabinet 20 and the outgoing cabinet 30.

[0029] However, this disclosure is not limited thereto. In some embodiments, the power distribution equipment 1 may include only one cabinet, in which the first incoming branch 19, the second incoming branch 29, and the outgoing branch 39 are all disposed. In some embodiments, the power distribution equipment 1 may include two cabinets, in which the first incoming branch 19 is disposed, and the second incoming branch 29 and the outgoing branch 39 are disposed in the other cabinet. The number of cabinets included in the power distribution equipment 1 may be varied as needed. Hereinafter, this disclosure will be described using the example of the power distribution equipment 1 including a first incoming cabinet 10, a second incoming cabinet 20, and an outgoing cabinet 30.

[0030] Figure 3A and Figure 3B This is a perspective view showing the first incoming cabinet 10 of the power distribution equipment 1 according to an embodiment of the present disclosure from different angles.

[0031] Reference Figures 1 to 3B The first incoming line cabinet 10 may include a first sidewall S1 and a second sidewall S2 facing each other, as well as a first extension E1 and a second extension E2 passing through the first sidewall S1 and the second sidewall S2 respectively. The outer surfaces of the first sidewall S1 and the second sidewall S2 may face the first side and the second side of the first incoming line cabinet 10 respectively.

[0032] like Figure 1 As shown, the second incoming line cabinet 20 and the outgoing line cabinet 30 can be located on the second side of the first incoming line cabinet 10. The busbar may include portions respectively located in the first incoming line cabinet 10, the second incoming line cabinet 20, and the outgoing line cabinet 30. The second incoming line cabinet 20 and the outgoing line cabinet 30 can be arranged side by side with the first incoming line cabinet 10 on the second side of the first incoming line cabinet 10. Figure 1 The illustration shows a second incoming line cabinet 20 disposed between the first incoming line cabinet 10 and the outgoing line cabinet 30, but this disclosure is not limited thereto. In some embodiments, the outgoing line cabinet 30 may be disposed between the first incoming line cabinet 10 and the second incoming line cabinet 20.

[0033] According to embodiments of this disclosure, similar to the first incoming line cabinet 10, the second incoming line cabinet 20 and the outgoing line cabinet 30 may also include extensions penetrating their side walls, and the corresponding extensions of the first incoming line cabinet 10, the second incoming line cabinet 20 and the outgoing line cabinet 30 may be electrically connected to each other.

[0034] The first voltage transformer 40 can be installed outside the first incoming line cabinet 10 and can be electrically connected to the contact N1 between the first circuit breaker 11 and the first disconnecting switch 12 through the first extension part E1 of the first incoming line cabinet 10. Since the first voltage transformer 40 is electrically connected to the contact N1 between the first circuit breaker 11 and the first disconnecting switch 12, when the first disconnecting switch 12 in the first incoming line branch 19 is closed, the first voltage transformer 40 can monitor the phase angle of the power supplied by the first power source introduced through the first incoming line branch 19.

[0035] Although Figure 3A and Figure 3B The diagram shows the first extension section E1 penetrating the side wall of the first incoming line cabinet 10, but this disclosure is not limited thereto. In some embodiments, the first extension section E1 may penetrate the top wall of the first incoming line cabinet 10. The location of the first extension section E1 can be changed as needed.

[0036] The second voltage transformer 50 can be electrically connected to the busbar 49. When the second incoming branch 29 is connected, the second voltage transformer 50 can detect voltage anomalies not only by monitoring the busbar voltage, but also by monitoring the phase angle of the power supplied by the second power source introduced through the second incoming cabinet 20. The second voltage transformer 50 can be installed outside the first incoming cabinet 10. When the power distribution setup 1 includes only one cabinet, the second voltage transformer 50 can be installed inside or outside the cabinet.

[0037] For example, refer to Figure 1 In the case where the first power source introduced through the first incoming branch 19 has been disconnected from the power grid while the second power source introduced through the second incoming branch 29 has been connected to the power grid, when it is necessary to reconnect the first power source to the power grid and disconnect the second power source from the power grid, the first disconnecting switch 12 in the first incoming branch 19 can be closed, allowing the first voltage transformer 40 to monitor the phase angle of the power output from the first power source. When the phase angle monitored by the first voltage transformer 40 is synchronized with the phase angle monitored by the second voltage transformer 50, the first circuit breaker 11 in the first incoming branch 19 is closed, thereby connecting the first power source to the power grid.

[0038] Therefore, by monitoring the phase angle of the corresponding power through the first voltage transformer 40 and the second voltage transformer 50, the power distribution equipment 1 of this disclosure can connect the corresponding power supply to the power grid when the phase angles are synchronized, thereby ensuring equipment safety and power grid stability.

[0039] Furthermore, since the first voltage transformer 40 is connected to contact N1 between the first circuit breaker 11 and the first disconnecting switch 12, the first disconnecting switch 12 can also be used as an isolation point for the installation and maintenance of the first voltage transformer 40. When both the first circuit breaker 11 and the first disconnecting switch 12 are open, it can be ensured that the first voltage transformer 40 is not energized during on-site installation and maintenance, thereby improving safety.

[0040] In some embodiments, the power distribution equipment 1 may further include a first voltage transformer cabinet (not shown) disposed on the first side of the first incoming line cabinet 10. The first voltage transformer cabinet may include a third extension corresponding to and electrically connected to the first extension E1 of the first incoming line cabinet 10, and the first voltage transformer 40 may be disposed in the first voltage transformer cabinet and electrically connected to the third extension.

[0041] However, this disclosure is not limited thereto, and a separate voltage transformer cabinet may not be configured for the first voltage transformer 40. In some embodiments, the first voltage transformer 40 may be located on top of the first incoming cabinet 10 and may be electrically connected to the first extension section E1 via a conductor (e.g., a flexible cable).

[0042] Similar to the first voltage transformer 40, the second voltage transformer 50 can be installed in a separate voltage transformer cabinet, or it can be installed on the top of one of the corresponding cabinets in the first incoming cabinet 10, the second incoming cabinet 20, and the outgoing cabinet 30.

[0043] For example, such as Figure 2 As shown, the power distribution equipment 1 may further include a second voltage transformer cabinet 60 disposed on the second side of the first incoming line cabinet 10, and a second voltage transformer 50 may be disposed in the second voltage transformer cabinet 60. The second voltage transformer cabinet 60 may include an extension portion penetrating its side wall, and the second voltage transformer 50 may be electrically connected to the extension portion and electrically connected to the bus 49 through the extension portion to monitor the phase angle of the power output by the second power source.

[0044] Although Figure 1 and Figure 2 The illustration shows a second voltage transformer cabinet 60 spaced apart from the first incoming cabinet 10, with the second incoming cabinet 20 and the outgoing cabinet 30 located between them; however, this disclosure is not limited thereto. The second incoming cabinet 20, the outgoing cabinet 30, and the second voltage transformer cabinet 60 can be changed as needed. For example, the second voltage transformer cabinet 60 can be positioned between the second incoming cabinet 20 and the outgoing cabinet 30.

[0045] According to this disclosure, the voltage transformer is connected from the extension section of the incoming line cabinet to the power distribution equipment. Therefore, the original cabinet type can be used without changing the cabinet structure or adding new extension sections, thereby reducing costs.

[0046] Figure 4 , Figure 5A and Figure 5B This is a schematic structural diagram showing some of the components in the first incoming cabinet 10 of the power distribution equipment 1 according to an embodiment of the present disclosure. Figure 5A yes Figure 4 A magnified view of part A in the image. Figure 5B yes Figure 4 A magnified view of part B in the image.

[0047] Reference Figures 4 to 5B According to one embodiment of this disclosure, the power distribution setup 1 may further include a copper busbar C disposed in the first incoming line cabinet 10 and electrically connecting the first extension portion E1 to a contact N1 between the first circuit breaker 11 and the first disconnecting switch 12. The lower end 111 of the first circuit breaker 11 may be connected to the upper end of the first disconnecting switch 12, and the connection point between the first circuit breaker 11 and the first disconnecting switch 12 forms contact N1. Figure 5A and Figure 5B As shown, the copper busbar C can be fixed to the lower end 111 of the first circuit breaker 11 and the first extension part E1 respectively by the insulating pressure plate 70, thereby electrically connecting the first voltage transformer 40 to the contact N1 between the first circuit breaker 11 and the first disconnecting switch 12. However, this disclosure is not limited to this, and the copper busbar C can be fixed to the first circuit breaker 11 and the first extension part E1 in other ways.

[0048] In some embodiments, such as Figure 4 As shown, the copper busbar C can be provided in multiple segments, and some of the copper busbar C can be bent. However, this disclosure is not limited thereto, and the number and shape of the copper busbar C can be determined according to various factors such as the internal space of the first incoming line cabinet 10 and the magnitude of the current to be conducted.

[0049] Connecting the first circuit breaker 11 and the first extension section E1 using a copper busbar C simplifies the cabinet structure and reduces quality risks. However, this disclosure also allows the use of other conductors (e.g., flexible cables) to achieve the electrical connection between the first circuit breaker 11 and the first extension section E1.

[0050] According to one embodiment of this disclosure, such as Figure 5B As shown, each of the first extension E1 and the second extension E2 of the first incoming line cabinet 10 may include an insulating sleeve E11 and a conductor E12 housed within the insulating sleeve E11. The insulating sleeve E11 may be inserted between the side wall of the first incoming line cabinet 10 and the conductor E12. However, this disclosure is not limited thereto, and the extensions E1 and E2 of the first incoming line cabinet 10 may also take other forms. The extensions of the second incoming line cabinet 20, the outgoing line cabinet 30, the first voltage transformer cabinet (not shown), and the second voltage transformer cabinet 60 may have the same or different forms as the extensions of the first incoming line cabinet 10.

[0051] The power distribution equipment according to this disclosure can monitor the power parameters of the power source to improve grid stability during power switching, while using existing switchgear without changing its structure, thus reducing costs. Furthermore, the power distribution equipment according to this disclosure can ensure that the first voltage transformer is not energized during on-site installation and maintenance, thereby improving safety.

[0052] Although this disclosure has been described in the specification and illustrated in the accompanying drawings with reference to various embodiments, those skilled in the art will understand that the above embodiments are merely preferred embodiments, and some technical features in the embodiments may not be necessary for solving specific technical problems, so these technical features may be omitted or omitted without affecting the solution of the technical problem or the formation of the technical solution; moreover, the features, elements and / or functions of one embodiment may be appropriately combined, combined or coordinated with the features, elements and / or functions of one or more other embodiments, unless such combination, combination or coordination is obviously not feasible.

Claims

1. A power distribution apparatus, characterized by, include: The first cabinet includes a first extension extending through its first side; The first incoming branch is located in the first cabinet and includes a first circuit breaker and a first disconnecting switch connected in series. The first voltage transformer is located outside the first cabinet and is electrically connected to the contact between the first circuit breaker and the first disconnecting switch via the first extension section. Second incoming branch and outgoing branch; The busbar connects the first incoming branch, the second incoming branch, and the outgoing branch in parallel. as well as The second voltage transformer is electrically connected to the bus.

2. The power distribution equipment according to claim 1, characterized in that, The first cabinet also includes a second side, which is different from the first side. The second side is the side wall of the first cabinet, and the outer surface of the second side faces the second side of the first cabinet. The power distribution equipment also includes a second cabinet located on the second side of the first cabinet, and the outgoing branch is located in the second cabinet.

3. The power distribution apparatus of claim 2, wherein It also includes a third cabinet located on the second side of the first cabinet, with the second incoming branch line located in the third cabinet. The second cabinet can be placed between the first and third cabinets, or the third cabinet can be placed between the first and second cabinets.

4. The power distribution apparatus of claim 1, wherein The first side is the side wall of the first cabinet. The power distribution equipment also includes a first voltage transformer cabinet located adjacent to the first side of the first cabinet. The first voltage transformer cabinet includes a second extension corresponding to and electrically connected to the first extension of the first cabinet. The first voltage transformer is disposed in the first voltage transformer cabinet and electrically connected to the second extension.

5. The power distribution equipment according to claim 1, characterized in that, The first voltage transformer is located at the top of the first cabinet.

6. The power distribution apparatus of claim 1, wherein It also includes a copper busbar disposed in the first cabinet and electrically connecting the first extension to the contact between the first circuit breaker and the first disconnecting switch.

7. The power distribution apparatus of claim 1, wherein The first cabinet also includes a second side, which is different from the first side. The second side is the side wall of the first cabinet, and the outer surface of the second side faces the second side of the first cabinet. The power distribution equipment also includes a second voltage transformer cabinet located on the second side of the first cabinet, with the second voltage transformer installed in the second voltage transformer cabinet.

8. The power distribution apparatus of claim 1, wherein, The first incoming branch is configured to receive mains power, and the second incoming branch is configured to receive power from a portable generator.

9. The power distribution equipment according to claim 8, characterized in that, The first voltage transformer is configured to measure the phase angle of the mains power, and the second voltage transformer is configured to measure the phase angle of the power from the portable generator.

10. The power distribution equipment according to claim 1, characterized in that, The first extension of the first cabinet includes an insulating sleeve and a conductor housed within the insulating sleeve.

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