Low-voltage bus duct rapid power supply switching system and method

Abstract

The invention relates to the technical field of power systems, and discloses a low-voltage bus duct rapid power supply switching system and method. The system comprises a first bus duct interconnection switch box arranged at the highest layer of a target building, and a second bus duct interconnection switch box arranged at the lowest layer of the target building, the first bus duct and the second bus duct are arranged between the first bus duct interconnection switch box and the second bus duct interconnection switch box; the rapid power conversion controller is in communication connection with the first bus duct interconnection switch box, the second bus duct interconnection switch box, the first bus duct and the second bus duct; and the rapid power conversion controller is used for controlling the fault bus duct connector to be disconnected and controlling the first bus duct interconnection switch box and the second bus duct interconnection switch box to act so as to realize power supply recovery of a non-fault area. The power supply reliability of the low-voltage bus duct can be remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and particularly to a fast power transfer system and method for low-voltage bus ducts. Background Art

[0002] When traditional cables face high-load demands, it is difficult to meet the current transmission requirements, and the parallel use of multiple cables makes on-site installation and construction connections very inconvenient, greatly increasing the complexity and cost of the project. As a power distribution device for efficiently transmitting current, bus ducts have shown great advantages in economically and reasonably wiring high-rise buildings and large-scale factories and are widely used. As an indispensable key component for bus duct installation, bus duct connectors undertake the important task of combined plugging between bus ducts and play a key role in ensuring the normal operation of bus ducts.

[0003] With the continuous increase in the usage of bus ducts, coupled with the increase in the operating years of buildings and power supply equipment, bus duct equipment failures are inevitable, especially the connection ports of bus ducts have become high-failure areas. However, there are many drawbacks in the current repair of bus ducts. During repair, the entire bus duct usually needs to be powered off, and the connection of bus ducts mostly uses screw fixing methods, which takes a long time to replace a bus duct connector. At the same time, to ensure the safety of operators, it is necessary to disconnect the floor switches on all floors, further prolonging the power outage duration, resulting in an overly long power outage time actually felt by users and seriously affecting power supply reliability. In addition, to prevent the risk of electric shock caused by users' self-generated power backfeeding, it is necessary to disconnect the floor switches on each floor during the maintenance of low-voltage bus ducts, greatly increasing the human and material resources. Summary of the Invention

[0004] Aiming at the problem that the existing low-voltage bus ducts cannot transfer power quickly, resulting in long power outages, the present invention provides a fast power transfer system and method for low-voltage bus ducts.

[0005] In a first aspect, an embodiment of the present invention provides a fast power transfer system for low-voltage bus ducts, including:

[0006] A first bus duct connection switch box arranged on the top floor of a target building, a second bus duct connection switch box arranged on the bottom floor of the target building, a first bus duct and a second bus duct arranged between the first bus duct connection switch box and the second bus duct connection switch box, and a fast power transfer controller communicatively connected to the first bus duct connection switch box, the second bus duct connection switch box, the first bus duct, and the second bus duct respectively, wherein a plurality of first bus duct connectors are arranged in the first bus duct, a plurality of second bus duct connectors are arranged in the second bus duct, and the first bus duct and the second bus duct are connected in parallel;

[0007] The fast power transfer controller is used to obtain the operation status data of each busbar connector, and analyze the operation status data to determine the faulty busbar connector;

[0008] The first busbar connection switch cabinet is used to switch the first non-faulty area corresponding to the faulty busbar connector to be powered by another busbar, where the first non-faulty area is the area above the target building floor corresponding to the faulty busbar connector;

[0009] The second busbar connection switch cabinet is used to switch the second non-faulty area corresponding to the faulty busbar connector to be powered by another busbar, where the second non-faulty area is the area below the target building floor corresponding to the faulty busbar connector;

[0010] The fast power transfer controller is further used to control the disconnection of the faulty busbar connector, and control the first busbar connection switch cabinet and the second busbar connection switch cabinet to act to realize the restoration of power supply to the non-faulty area.

[0011] Preferably, the fast power transfer controller includes:

[0012] A fault analysis and judgment module, which is used to receive the operation status data transmitted by each busbar connector in real time, and perform threshold judgment on the operation status data to obtain the faulty busbar connector, where the operation status data includes voltage, current and temperature.

[0013] Preferably, the first busbar connection switch cabinet includes:

[0014] A first plug-in module, a second plug-in module, and a first connection switch disposed between the first plug-in module and the second plug-in module, where one end of the first plug-in module is connected to the first connection switch, the other end of the first plug-in module is connected to the first busbar, one end of the second plug-in module is connected to the first connection switch, and the other end of the second plug-in module is connected to the second busbar;

[0015] The first connection switch is used to switch the first busbar corresponding to the faulty busbar connector to be powered by another busbar, where the first busbar is the busbar above the target building floor corresponding to the faulty busbar connector.

[0016] Preferably, the second busbar connection switch cabinet includes:

[0017] A third plug-in module, a fourth plug-in module, and a second tie switch disposed between the third plug-in module and the fourth plug-in module, wherein one end of the third plug-in module is connected to the second tie switch, the other end of the third plug-in module is connected to the first busbar trunking, one end of the fourth plug-in module is connected to the second tie switch, and the other end of the fourth plug-in module is connected to the second busbar trunking;

[0018] The second tie switch is configured to switch the power supply of the second bus corresponding to the faulty busbar trunking connector to be supplied by another busbar trunking, wherein the second bus is the busbar trunking below the target building floor corresponding to the faulty busbar trunking connector.

[0019] Preferably, the first busbar trunking tie switch cabinet and the second busbar trunking tie switch cabinet have the same enclosure protection level that is higher than a preset level threshold.

[0020] Preferably, the fast power transfer controller further includes:

[0021] A fault isolation module, configured to control the disconnection of the faulty busbar trunking connector and control the disconnection of the adjacent busbar trunking connectors of the faulty busbar trunking connector.

[0022] Preferably, the fast power transfer controller further includes:

[0023] A first power restoration module, configured to control the operation of the first tie switch to restore power supply to the first bus.

[0024] Preferably, the fast power transfer controller further includes:

[0025] A second power restoration module, configured to control the operation of the second tie switch to restore power supply to the second bus.

[0026] In a second aspect, an embodiment of the present invention provides a method for fast power transfer of a low-voltage busbar trunking, which is applied to the low-voltage busbar trunking fast power transfer system as described above. The method for fast power transfer of a low-voltage busbar trunking includes:

[0027] Obtaining the operation status data of each busbar trunking connector through the fast power transfer controller, and analyzing the operation status data to determine the faulty busbar trunking connector;

[0028] Switching the first non-faulty area corresponding to the faulty busbar trunking connector to be supplied by another busbar trunking through the first busbar trunking tie switch cabinet, wherein the first non-faulty area is the area above the target building floor corresponding to the faulty busbar trunking connector;

[0029] Switch the second non-faulty area corresponding to the faulty busbar connector to be powered by another busbar through the second busbar connection switch cabinet, where the second non-faulty area is the area below the target building floor corresponding to the faulty busbar connector;

[0030] Control the faulty busbar connector to disconnect through the fast power transfer controller, and control the first busbar connection switch cabinet and the second busbar connection switch cabinet to operate to restore power supply to the non-faulty area.

[0031] Preferably, the control of disconnecting the faulty busbar connector through the fast power transfer controller includes:

[0032] Control the faulty busbar connector to disconnect through the fault isolation module, and control the adjacent busbar connectors of the faulty busbar connector to disconnect.

[0033] Compared with the prior art, the low-voltage busbar fast power transfer system and method in the embodiments of the present invention have the following beneficial effects: The first busbar connection switch cabinet can quickly switch the first non-faulty area (the area above the fault point floor) corresponding to the faulty busbar connector to be powered by another busbar, and the second busbar connection switch cabinet similarly completes the switching operation for the second non-faulty area (the area below the fault point floor). This way of accurately switching power supply by area greatly reduces the power outage range and effectively guarantees the normal power consumption needs of various facilities and users in the building; The fast power transfer controller can not only control the faulty busbar connector to disconnect to prevent the further spread of the fault, but also synchronously control the first busbar connection switch cabinet and the second busbar connection switch cabinet to operate, enabling the non-faulty area to quickly restore power supply. The whole process has a high degree of automation, without the need for manual operation of many switches, greatly shortening the power outage duration and significantly improving the power supply reliability. Brief Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of a low-voltage busbar fast power transfer system in an embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of the fast power transfer controller in an embodiment of the present invention;

[0036] Figure 3 is another schematic structural diagram of a low-voltage busbar fast power transfer system in an embodiment of the present invention;

[0037] Figure 4 is a schematic flow diagram of a low-voltage busbar fast power transfer method in an embodiment of the present invention. Detailed Embodiments

[0038] The following will further describe in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "first" and "second" etc. used in the present invention are used to distinguish different objects, rather than to describe a specific order.

[0040] In the description of the present invention, it should be noted that unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] As Figure 1 shown, an embodiment of the present invention provides a low-voltage busbar rapid power transfer system, including:

[0042] A first busbar connection switch cabinet 11 arranged on the top floor of the target building, a second busbar connection switch cabinet 12 arranged on the bottom floor of the target building, a first busbar 21 and a second busbar 22 arranged between the first busbar connection switch cabinet and the second busbar connection switch cabinet, and a rapid power transfer controller 3 respectively communicatively connected to the first busbar connection switch cabinet, the second busbar connection switch cabinet, the first busbar, and the second busbar.

[0043] A number of first busbar connectors 211 are arranged in the first busbar, a number of second busbar connectors 221 are arranged in the second busbar, and the first busbar and the second busbar are connected in parallel.

[0044] The rapid power transfer controller is used to obtain the operation status data of each busbar connector and analyze the operation status data to determine the faulty busbar connector.

[0045] As Figure 2 shown, the rapid power transfer controller includes:

[0046] A fault analysis and judgment module 31, which is used to receive the operation status data transmitted by each busbar connector in real time and perform threshold judgment on the operation status data to obtain the faulty busbar connector.

[0047] Specifically, the operating state data includes voltage, current, and temperature. Voltage sensors, current sensors, and temperature sensors are provided at each busbar connector to transmit data to the fault analysis and judgment module in real time. The threshold judgment method is adopted to set the normal ranges and fault characteristic values of parameters such as voltage, current, and temperature. When the monitored data exceeds the corresponding range, the corresponding busbar connector is determined to be a faulty busbar connector.

[0048] The first busbar connection switch box is used to switch the first non-faulty area corresponding to the faulty busbar connector to be powered by another busbar.

[0049] Specifically, the first non-faulty area is the area above the target building floor corresponding to the faulty busbar connector.

[0050] As Figure 3 shown, the first busbar connection switch box includes:

[0051] The first plug-in module 111, the second plug-in module 112, and the first connection switch 113 provided between the first plug-in module and the second plug-in module. One end of the first plug-in module is connected to the first connection switch, the other end of the first plug-in module is connected to the first busbar, one end of the second plug-in module is connected to the first connection switch, and the other end of the second plug-in module is connected to the second busbar.

[0052] The first connection switch is used to switch the first busbar corresponding to the faulty busbar connector to be powered by another busbar.

[0053] Specifically, the first busbar is the busbar above the target building floor corresponding to the faulty busbar connector. It can be understood that, for example, originally the busbar A powers the area above a certain floor, and the busbar B is used as a backup. When the busbar A fails on a certain floor, the first connection switch switches the area above that floor to be powered by the busbar B.

[0054] The second busbar connection switch box is used to switch the second non-faulty area corresponding to the faulty busbar connector to be powered by another busbar.

[0055] Specifically, the second non-faulty area is the area below the target building floor corresponding to the faulty busbar connector.

[0056] As Figure 3 shown, the second busbar connection switch box includes:

[0057] The third plug-in module 121, the fourth plug-in module 122, and the second connection switch 123 provided between the third plug-in module and the fourth plug-in module. One end of the third plug-in module is connected to the second connection switch, the other end of the third plug-in module is connected to the first busbar, one end of the fourth plug-in module is connected to the second connection switch, and the other end of the fourth plug-in module is connected to the second busbar.

[0058] The second connection switch is used to switch the second bus corresponding to the faulty bus duct connector to be powered by another bus duct.

[0059] Specifically, the second bus is the bus below the floor of the target building corresponding to the faulty bus duct connector. It can be understood that, for example, originally bus A supplies power to the area below a certain floor, and bus B is used as a backup. When bus A fails on a certain floor, the second connection switch switches the area below that floor to be powered by bus B.

[0060] The first bus duct connection switch box and the second bus duct connection switch box have the same and higher than the preset level threshold enclosure protection level. In this embodiment, both the first bus duct connection switch box and the second bus duct connection switch box are of IP68 protection level, indicating that the two switch boxes have high dust and water protection capabilities, which can effectively protect the internal connection switches, electrical connection components, etc. from dust and water erosion, improve the reliability and service life of the equipment, and ensure the safe and stable operation of the power system under complex working conditions.

[0061] The fast power transfer controller is also used to control the disconnection of the faulty bus duct connector, and control the actions of the first bus duct connection switch box and the second bus duct connection switch box to realize the restoration of power supply to the non-faulty area.

[0062] As Figure 2 shown, the fast power transfer controller further includes:

[0063] The fault isolation module 32 is used to control the disconnection of the faulty bus duct connector and control the disconnection of the adjacent bus duct connectors of the faulty bus duct connector. Through the maintenance state operation of the fast power transfer controller, according to the electrical topology information of the bus duct, the fast power transfer controller also performs automatic disconnection control operations on the upper and lower bus duct connectors (adjacent bus duct connectors) of the bus duct connector that automatically exits the fault point, which can effectively avoid personal injuries caused by misoperations.

[0064] Furthermore, the fast power transfer controller further includes:

[0065] The first power restoration module 33 is used to control the action of the first connection switch to realize the restoration of power supply to the first bus. Through the fast power transfer controller, the first connection switch is controlled to switch the first bus corresponding to the faulty bus duct connector to be powered by another bus duct to realize the restoration of power supply to the first bus.

[0066] Furthermore, the fast power transfer controller further includes:

[0067] The second power restoration module 34 is used to control the operation of the second tie switch to restore power supply to the second busbar. The fast power transfer controller controls the second tie switch to switch the second busbar corresponding to the faulty busbar connector to be powered by another busbar, so as to restore power supply to the second busbar.

[0068] It should be noted that as a key component of this system, the fast power transfer controller can control the on / off of all tie switches and busbar connectors, and stores the fault parameters of its relevant electrical topology and all fault characteristics, and can control the normal on / off of all switches according to the fault characteristics.

[0069] In the embodiment of the present invention, a fast power transfer system for low-voltage busbars, the first busbar tie switch cabinet can quickly switch the first non-faulty area (the area above the floor where the fault point is located) corresponding to the faulty busbar connector to be powered by another busbar, and the second busbar tie switch cabinet similarly completes the switching operation for the second non-faulty area (the area below the floor where the fault point is located). This way of accurately switching power supply by area greatly reduces the power outage range and effectively guarantees the normal power consumption needs of various facilities and users in the building; the fast power transfer controller can not only control the disconnection of the faulty busbar connector to prevent the further spread of the fault, but also synchronously control the actions of the first busbar tie switch cabinet and the second busbar tie switch cabinet to quickly restore power supply to the non-faulty area. The whole process has a high degree of automation, without the need for manual operation of many switches, greatly shortening the power outage duration and significantly improving the power supply reliability.

[0070] As Figure 4 shown, the embodiment of the present invention provides a fast power transfer method for low-voltage busbars, which is applied to the fast power transfer system for low-voltage busbars as described above, and includes the steps:

[0071] S1. Obtain the operation status data of each busbar connector through the fast power transfer controller, and analyze the operation status data to determine the faulty busbar connector;

[0072] S2. Switch the first non-faulty area corresponding to the faulty busbar connector to be powered by another busbar through the first busbar tie switch cabinet;

[0073] The first non-faulty area is the area above the target building floor corresponding to the faulty busbar connector.

[0074] S3. Switch the second non-faulty area corresponding to the faulty busbar connector to be powered by another busbar through the second busbar tie switch cabinet;

[0075] The second non-faulty area is the area below the target building floor corresponding to the faulty busbar connector.

[0076] S4. Control the disconnection of the faulty busway connector through the fast power transfer controller, and control the operation of the first busway tie switch cabinet and the second busway tie switch cabinet to restore power supply to the non-faulty area.

[0077] Specifically, control the disconnection of the faulty busway connector through the fault isolation module, and control the disconnection of the adjacent busway connectors of the faulty busway connector.

[0078] It should be noted that the above-mentioned method for fast power transfer of low-voltage busways relies on the above-mentioned system for fast power transfer of low-voltage busways. For the specific limitations of the method for fast power transfer of low-voltage busways, refer to the limitations of the system for fast power transfer of low-voltage busways in the above text. The two have the same functions and effects, and will not be elaborated here.

[0079] In summary, for the system and method for fast power transfer of low-voltage busways in the embodiments of the present invention, the first busway tie switch cabinet can quickly switch the first non-faulty area (the area above the floor where the fault point is located) corresponding to the faulty busway connector to another busway for power supply, and the second busway tie switch cabinet similarly completes the switching operation for the second non-faulty area (the area below the floor where the fault point is located). This method of accurately switching power supply by partition greatly reduces the power outage range and effectively guarantees the normal power consumption needs of various facilities and users in the building; the fast power transfer controller can not only control the disconnection of the faulty busway connector to prevent the further spread of the fault, but also synchronously control the operation of the first busway tie switch cabinet and the second busway tie switch cabinet to quickly restore power supply to the non-faulty area. The whole process has a high degree of automation, without the need for manual operation of many switches, greatly shortening the power outage duration and significantly improving the power supply reliability.

[0080] Each embodiment in this specification is described in a progressive manner. For the parts that are the same or similar in each embodiment, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the method embodiments, since they are basically similar to the system embodiments, the description is relatively simple, and the relevant parts can refer to the description of the system embodiments. It should be noted that the above technical features of the embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the above technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0081] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A fast power transfer system for low-voltage bus ducts, characterized in that, Including: A first busbar tie switch cabinet installed on the top floor of the target building, a second busbar tie switch cabinet installed on the bottom floor of the target building, a first busbar and a second busbar arranged between the first busbar tie switch cabinet and the second busbar tie switch cabinet, and a fast power transfer controller communicatively connected to the first busbar tie switch cabinet, the second busbar tie switch cabinet, the first busbar, and the second busbar respectively. Among them, a plurality of first busbar connectors are arranged in the first busbar, a plurality of second busbar connectors are arranged in the second busbar, and the first busbar and the second busbar are connected in parallel; The fast power transfer controller is configured to obtain the operation status data of each busbar connector and analyze the operation status data to determine the faulty busbar connector; The first busbar tie switch cabinet is configured to switch the first non-faulty area corresponding to the faulty busbar connector to be powered by another busbar, where the first non-faulty area is the area above the floor of the target building corresponding to the faulty busbar connector; The second busbar tie switch cabinet is configured to switch the second non-faulty area corresponding to the faulty busbar connector to be powered by another busbar, where the second non-faulty area is the area below the floor of the target building corresponding to the faulty busbar connector; The fast power transfer controller is further configured to control the disconnection of the faulty busbar connector and control the actions of the first busbar tie switch cabinet and the second busbar tie switch cabinet to restore power supply to the non-faulty area.

2. The fast power transfer system for low-voltage bus ducts according to claim 1, characterized in that, The fast power transfer controller includes: A fault analysis and judgment module, configured to receive in real time the operation status data transmitted by each busbar connector and perform threshold judgment on the operation status data to obtain the faulty busbar connector, where the operation status data includes voltage, current, and temperature.

3. The low-voltage busbar trunking rapid power transfer system according to claim 1, characterized in that The first busbar tie switch cabinet includes: A first plug-in module, a second plug-in module, and a first tie switch arranged between the first plug-in module and the second plug-in module. One end of the first plug-in module is connected to the first tie switch, the other end of the first plug-in module is connected to the first busbar, one end of the second plug-in module is connected to the first tie switch, and the other end of the second plug-in module is connected to the second busbar; The first tie switch is configured to switch the first busbar corresponding to the faulty busbar connector to be powered by another busbar, where the first busbar is the busbar above the floor of the target building corresponding to the faulty busbar connector.

4. The low-voltage busbar trunking rapid power transfer system according to claim 1, wherein The second busbar tie switch cabinet includes: A third plug-in module, a fourth plug-in module, and a second tie switch arranged between the third plug-in module and the fourth plug-in module. One end of the third plug-in module is connected to the second tie switch, the other end of the third plug-in module is connected to the first busbar, one end of the fourth plug-in module is connected to the second tie switch, and the other end of the fourth plug-in module is connected to the second busbar; The second connection switch is used to switch the second bus corresponding to the faulty busbar connector to be powered by another busbar, where the second bus is the busbar below the target building floor corresponding to the faulty busbar connector.

5. The low-voltage busbar trunking rapid power transfer system according to claim 1, wherein The first busbar connection switch cabinet and the second busbar connection switch cabinet have the same and higher enclosure protection level than the preset level threshold.

6. The low-voltage busbar trunking rapid power transfer system according to claim 1, wherein, The fast power transfer controller further includes: A fault isolation module, configured to control the disconnection of the faulty busbar connector and the disconnection of the adjacent busbar connectors of the faulty busbar connector.

7. The low-voltage busbar trunking rapid power transfer system according to claim 3, wherein The fast power transfer controller further includes: A first power restoration module, configured to control the first connection switch to act to restore power to the first bus.

8. The low-voltage busbar trunking rapid power transfer system according to claim 4, wherein The fast power transfer controller further includes: A second power restoration module, configured to control the second connection switch to act to restore power to the second bus.

9. A method for quickly transferring power supply of a low-voltage busway, which is applied to the low-voltage busway quick power transfer system according to any one of claims 1 to 8, is characterized in that, The low-voltage busbar fast power transfer method includes: Obtaining the operation status data of each busbar connector through a fast power transfer controller, and analyzing the operation status data to determine the faulty busbar connector; Switching the first non-faulty area corresponding to the faulty busbar connector to be powered by another busbar through the first busbar connection switch cabinet, where the first non-faulty area is the area above the target building floor corresponding to the faulty busbar connector; Switching the second non-faulty area corresponding to the faulty busbar connector to be powered by another busbar through the second busbar connection switch cabinet, where the second non-faulty area is the area below the target building floor corresponding to the faulty busbar connector; Controlling the disconnection of the faulty busbar connector through the fast power transfer controller, and controlling the first busbar connection switch cabinet and the second busbar connection switch cabinet to act to restore power to the non-faulty area.

10. The rapid power transfer method for low-voltage bus ducts according to claim 9, characterized in that, The controlling the disconnection of the faulty busbar connector through the fast power transfer controller includes: Controlling the disconnection of the faulty busbar connector through a fault isolation module, and controlling the disconnection of the adjacent busbar connectors of the faulty busbar connector.

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