A segmented backup automatic switching method and system suitable for multi-path power supply multi-section bus main wiring

Abstract

The application discloses a kind of segmented backup power automatic switching method and system suitable for multi-path power supply multi-section bus main wiring, method includes, to the first section switch in section with the sectional switch to be backed up and connected bus side direction search, search then continue to judge the backup priority of the first section switch in section and sectional switch to be backed up, if the backup priority of the first section switch in section is higher than sectional switch to be backed up, then when meeting first condition, the sectional switch to be backed up and backed up and acted, otherwise when meeting second condition, the sectional switch to be backed up and backed up and acted;If not search the sectional switch in section, then when meeting third condition, the sectional switch to be backed up and backed up and acted.The present application can solve the problems such as poor adaptability, complex configuration, easy to make mistakes and other problems of existing backup power automatic switching technology in multi-path power supply, multi-section bus complex main wiring architecture.

Description

Technical Field

[0001] This invention relates to a method for implementing automatic transfer switch (ATS), and more particularly to a segmented ATS method and system adapted to multi-source power supply and multi-section busbar main wiring. Background Technology

[0002] With the continuous growth of electricity load in the power system, the number of power sources and busbars in the power grid is increasing simultaneously, gradually forming a complex main wiring architecture with multiple power sources and multiple busbar sections. The complexity of the main wiring directly leads to more flexible and diverse system operating conditions, placing higher demands on the adaptability of automatic transfer switch (hereinafter referred to as "ATS") devices.

[0003] Traditional automatic transfer switching (ATS) methods are typically based on fixed main wiring topologies and preset operating conditions for logical configuration. This only adapts to a limited number of typical operating scenarios and cannot meet the ATS requirements of complex main wiring under various changing operating conditions. Forcing each changing operating condition to be adapted through functional configuration would result in extremely cumbersome ATS logic configuration, significantly increasing the workload of engineering configuration and debugging. It would also easily lead to configuration errors due to excessive logic, ultimately resulting in a low success rate of ATS operation under fault conditions such as bus undervoltage, thus affecting power supply reliability. Summary of the Invention

[0004] The purpose of this invention is to address the problems of poor adaptability, cumbersome configuration, and error-proneness of existing automatic transfer switch (ATS) technologies in complex main wiring architectures with multiple power sources and multiple bus sections, and to provide a segmented ATS method and system that is adaptable to main wiring of multiple power sources and multiple bus sections.

[0005] To achieve the above objectives, the solution of the present invention is:

[0006] A method for sectionalized automatic transfer switching adapted to multi-source power supply and multi-section busbar main wiring includes,

[0007] The system searches for the first sectionalizing switch in the open position on the busbar side connected to the standby automatic transfer switch. If found, it continues to determine the backup priority between the first sectionalizing switch in the open position and the standby automatic transfer switch. If the backup priority of the first sectionalizing switch in the open position is higher than that of the standby automatic transfer switch, the standby automatic transfer switch will activate when the first condition is met; otherwise, the standby automatic transfer switch will activate when the second condition is met. If no sectionalizing switch in the open position is found, the standby automatic transfer switch will activate when the third condition is met.

[0008] The first condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition and the standby automatic transfer function of the first sectionalizing switch in the detached position is not activated; the second condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition; the third condition is that all busbars and power supplies on the adjacent undervoltage busbar side of the standby automatic transfer sectionalizing switch both meet the undervoltage condition.

[0009] Wherein, the backup priority of the first sectionalizing switch in the sectionalizing position is higher than that of the standby automatic transfer sectionalizing switch, then when the first condition is met, the power switch between the two sectionalizing switches is tripped after a trip delay.

[0010] Continue to determine whether the power switches between the two sectionalizing switches are both in the open position. If so, close the standby automatic transfer sectionalizing switch after a closing delay, and the bus voltage is restored, and the automatic transfer operation is successful. Otherwise, the switch fails to trip and the automatic transfer operation fails.

[0011] Wherein, if the backup priority of the first sectionalizing switch in the sectionalizing position is not higher than that of the standby automatic transfer sectionalizing switch, then when the second condition is met, the power switch between the two sectionalizing switches will trip after a trip delay.

[0012] Continue to determine whether the power switches between the two sectionalizing switches are both in the open position. If so, close the standby automatic transfer sectionalizing switch after a closing delay, and the bus voltage is restored, and the automatic transfer operation is successful. Otherwise, the switch fails to trip and the automatic transfer operation fails.

[0013] If no sectionalizing switch located at the sectionalizing position is found, all power switches on the undervoltage bus side will trip after a trip delay when the third condition is met.

[0014] Continue to determine whether all power switches on the undervoltage bus side are in the open position. If so, close the aforementioned standby automatic transfer section switch after a closing delay, and the bus voltage is restored, and the automatic transfer operation is successful; otherwise, the switch fails to trip and the automatic transfer operation fails.

[0015] The multi-power supply multi-segment bus main wiring refers to a system that includes multiple bus segments, with the number of bus segments being ≥2; each bus segment has multiple power sources, with the number of power sources being ≥1; and each bus segment is connected to other bus segments via a sectionalizing switch.

[0016] Each power supply is equipped with a maintenance check plate. When the power supply is under maintenance, the corresponding maintenance check plate is engaged to ensure that the automatic transfer function can be used normally.

[0017] A sectionalized automatic transfer switch system adaptable to multi-source power supply and multi-section busbar main wiring includes,

[0018] The backup sectionalizing switch search module is configured to search for the first sectionalizing switch in the open position in the direction of the busbar connected to the standby automatic transfer sectionalizing switch.

[0019] The backup priority judgment module is configured to determine the backup priority of the first segmented switch in the segmented position and the standby automatic transfer segmented switch when the backup segmented switch search module finds the first segmented switch in the segmented position.

[0020] The first condition judgment action module is configured to determine that when the backup priority judgment module determines that the backup priority of the first segmented switch in the position is higher than that of the standby automatic transfer segmented switch, the standby automatic transfer action of the standby automatic transfer segmented switch is performed when the first condition is met.

[0021] The second condition judgment module is configured to, when the backup priority judgment module determines that the backup priority of the first segmented switch in the sectionalizing position is not higher than that of the standby automatic transfer segmented switch, determine that the standby automatic transfer segmented switch will automatically transfer when the second condition is met; and...

[0022] The third condition judgment action module is configured to determine that the standby automatic transfer section switch will automatically transfer when the standby section switch search module fails to find the section switch located at the position, and the third condition is met.

[0023] The first condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition and the standby automatic transfer function of the first sectionalizing switch in the detached position is not activated; the second condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition; the third condition is that all busbars and power supplies on the adjacent undervoltage busbar side of the standby automatic transfer sectionalizing switch both meet the undervoltage condition.

[0024] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the computer program, it implements the steps of the segmented backup automatic transfer method adapted to the multi-power source multi-segment bus main wiring as described above.

[0025] A computer-readable storage medium storing a computer program; when executed by a processor, the computer program implements the steps of the segmented backup automatic transfer method adapted to multi-power supply multi-segment bus main wiring as described above.

[0026] A computer program product, when executed by a processor, implements the steps of the previously described segmented backup automatic transfer method for multi-source power supply and multi-segment bus main wiring.

[0027] By adopting the above solution, this invention addresses the shortcomings of existing automatic transfer switch (ATS) technologies for complex main wiring architectures with multiple power sources and multiple bus sections. It optimizes the ATS control logic design, configuring segmented ATS functions on a segmented basis for multi-power source, multi-bus section main wiring. Each segmented switch is configured using a unified and identical process, enabling segmented ATS functionality for all segmented switches under various operating conditions. Furthermore, it provides multi-level backup functionality with multiple standby segmented switches in case of bus voltage loss, effectively solving the problems of poor adaptability and inability to adapt to various operating conditions in traditional ATS methods. This invention achieves segmented ATS functionality for complex main wiring architectures under various operating conditions, and provides multi-level backup functionality with multiple standby segmented switches in case of bus voltage loss, resulting in a more complete ATS logic. Compared with existing technologies, this invention significantly simplifies the configuration process of the ATS function, significantly reduces the workload of engineering configuration and the probability of configuration errors, and improves the accuracy and efficiency of the ATS system configuration. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the automatic transfer function of the sectionalizing switch n in the main wiring of a multi-power supply and multi-section busbar.

[0029] Figure 2 This is a schematic diagram of the operating conditions of multiple power sources, multiple busbar main wiring, and separate busbars.

[0030] Figure 3 This is a schematic diagram of the parallel operation of the busbars to the left of the sectionalizing switch n in the main wiring of a multi-power supply and multi-section busbar.

[0031] Figure 4 This is a schematic diagram of the parallel operation of all busbars on the left side of the sectionalizing switch n in the main wiring of a multi-power supply and multi-section busbar. Detailed Implementation

[0032] The technical solution and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] This invention provides a method for implementing sectionalized automatic transfer switching (ATS) for multi-source power supply and multi-section busbar main wiring. For multi-source power supply and multi-section busbar main wiring, the ATS function is configured using sectional switches as units. Each sectional switch is configured according to the same unified steps. The ATS function for sectional switch n includes the following steps:

[0034] Step 1: In the main wiring of a multi-power supply multi-segment bus, for a sectionalizing switch n, search for the first sectionalizing switch x that is in the sectionalizing position in the direction of the bus connected to sectionalizing switch n;

[0035] Step 2: Determine if the segment switch x at the terminating position has been found. If yes, proceed to Step 3; otherwise, proceed to Step 6.

[0036] Step 3: Determine whether the backup priority of sectionalizing switch x is higher than that of sectionalizing switch n. If yes, proceed to step 4; otherwise, proceed to step 5.

[0037] Step 4: Determine whether the condition "section switch n has completed automatic transfer charging, the bus and power supply between section switch x and section switch n meet the undervoltage condition and the automatic transfer function of section x has not been activated" is met. If yes, proceed to step 7; otherwise, proceed to step 8.

[0038] Step 5: Determine whether the condition "the automatic charging of sectionalizing switch n is completed, and the busbar and power supply between sectionalizing switch x and sectionalizing switch n meet the undervoltage condition" is met. If yes, proceed to step 7; otherwise, proceed to step 8.

[0039] Step 6: Determine whether the condition "the automatic transfer charging of sectionalizing switch n is completed and the busbar and power supply on the adjacent undervoltage busbar side of sectionalizing switch n meet the undervoltage condition" is met. If yes, proceed to step 9; otherwise, proceed to step 8.

[0040] Step 7: After the trip delay, trip the power switch between sectionalizing switch x and sectionalizing switch n, and then proceed to step 10;

[0041] Step 8: Segmented automatic transfer switch does not start;

[0042] Step 9: Trip all power switches on the undervoltage bus side after the trip delay, then proceed to Step 11;

[0043] Step 10: Determine whether the power switches between sectionalizing switch x and sectionalizing switch n are both in the open position. If yes, proceed to step 12; otherwise, proceed to step 13.

[0044] Step 11: Determine whether all power switches on the undervoltage bus side are in the open position. If yes, proceed to Step 12; otherwise, proceed to Step 13.

[0045] Step 12: After a closing delay, the sectionalizing switch n is closed, and the bus voltage is restored, successfully triggering the automatic transfer switch.

[0046] Step 13: The switch failed to trip and the automatic transfer function failed.

[0047] The multi-power supply multi-segment bus main wiring refers to having multiple bus segments, with the number of segments ≥ 2, each bus segment having multiple power sources, with the number of power sources ≥ 1, and each bus segment being connected to other bus segments via a sectionalizing switch.

[0048] Each power supply can be equipped with a maintenance switch. When the power supply is under maintenance, the corresponding maintenance switch is activated, and the automatic transfer function can be used normally.

[0049] This invention enables two-level backup switching of two hot standby sectionalizing switches connected to the undervoltage busbar. If the hot standby sectionalizing switch with higher priority fails to switch, the hot standby sectionalizing switch with lower priority will switch.

[0050] like Figure 1 The diagram shown is a schematic of the automatic transfer function of sectionalizing switch n in the main wiring of a multi-power supply multi-section busbar, as proposed in this invention. This invention configures the automatic transfer function of sectionalizing switch n as a unit, and each sectionalizing switch completes the configuration of the automatic transfer function of sectionalizing switch n according to the same unified steps. Taking the configuration of the automatic transfer function of sectionalizing switch n as an example, under the current operating conditions, the system searches for the first sectionalizing switch x in the open position on the busbar side connected to sectionalizing switch n. Based on the search result and the backup transfer priority of sectionalizing switch x, the subsequent logic of the automatic transfer function of sectionalizing switch n is determined. If no sectionalizing switch x is found, meaning all sectionalizing switches on the corresponding side are in the closed position, the automatic transfer function of sectionalizing switch n is activated when all busbars and power supplies on this side meet the undervoltage condition. If sectionalizing switch x in the open position is found, the automatic transfer function of sectionalizing switch n is activated when the busbars and power supplies between sectionalizing switch x and sectionalizing switch n meet the undervoltage condition. If the backup transfer priority of sectionalizing switch x is higher than that of sectionalizing switch n, it is also necessary to add a condition that the automatic transfer function of sectionalizing switch x has not been activated.

[0051] Example 1

[0052] Figure 2 This is a schematic diagram of the main wiring of multiple power sources and multiple bus sections, with each bus section operating separately. Each section switch is in the open position, and each bus section has one or more power sources. Each section switch is configured with automatic transfer function according to a unified procedure.

[0053] for Figure 2 Taking the automatic transfer function of sectionalizing switch (n-1) and sectionalizing switch n as an example, the automatic transfer function of sectionalizing switch (n-1) searches for the first sectionalizing switch n in the vacated position to the right of sectionalizing switch n, and the automatic transfer function of sectionalizing switch n searches for the first sectionalizing switch (n-1) in the vacated position to the left of sectionalizing switch (n-1). When a power supply n failure causes a loss of voltage on bus n, both the automatic transfer function of sectionalizing switch (n-1) and sectionalizing switch n can detect the loss of voltage on the bus, which can be divided into two cases:

[0054] Scenario 1: If the backup transfer priority of sectionalizing switch (n-1) is higher than that of sectionalizing switch n, then the automatic transfer start conditions for sectionalizing switch (n-1) when bus n loses voltage are: no voltage on bus n and no current flowing to power supply n. The automatic transfer start conditions for sectionalizing switch n are: no voltage on bus n, no current flowing to power supply n, and automatic transfer start of sectionalizing switch (n-1) not activated. After bus n loses voltage, automatic transfer start of sectionalizing switch (n-1) is activated. Since automatic transfer start of sectionalizing switch (n-1) is activated, automatic transfer start of sectionalizing switch n is not activated, and automatic transfer start of sectionalizing switch (n-1) is not activated. The power supply switch n between sectionalizing switch (n-1) and sectionalizing switch n is tripped. After confirming the trip, the power supply switch n is closed. If sectionalizing switch (n-1) closes successfully, the n bus is restored to voltage, and the automatic transfer switches n and n are activated and returned to normal. If sectionalizing switch (n-1) fails to close, the automatic transfer switch n is activated and returned to normal. Then, the automatic transfer switch n is activated and the power supply switch n is closed to restore the power supply to the n bus. This realizes the two-stage backup transfer function of the sectionalizing switch after the n bus loses voltage.

[0055] Scenario 2: If the backup transfer priority of sectionalizing switch (n-1) is lower than that of sectionalizing switch n, then the activation conditions for the automatic transfer switch of sectionalizing switch (n-1) when bus n loses voltage are: no voltage on bus n, no current to power supply n, and the automatic transfer switch of sectionalizing switch n not activated. The activation conditions for the automatic transfer switch of sectionalizing switch n are: no voltage on bus n and no current to power supply n. After the loss of voltage on bus n, the automatic transfer switch of sectionalizing switch n is activated. Since the automatic transfer switch of sectionalizing switch n is activated, the automatic transfer switch of sectionalizing switch (n-1) does not activate. The power supply switch n between the sectionalizing switch (n-1) and the sectionalizing switch n is tripped. After confirmation of tripping, the sectionalizing switch n is ordered to close. If the sectionalizing switch n closes successfully, the n bus is restored to voltage, and the automatic transfer switches (n-1) and n are automatically activated and returned to their original positions. If the sectionalizing switch n fails to close, the automatic transfer switch n is automatically activated and returned to its original position. Then, the automatic transfer switch (n-1) is activated and orders the sectionalizing switch (n-1) to close, restoring power supply to the n bus. This realizes the two-stage backup transfer function of the sectionalizing switch after the n bus loses voltage.

[0056] Example 2

[0057] Figure 3 This is a schematic diagram of the parallel operation of the busbars to the left of section switch n in the main wiring of a multi-power supply and multi-section busbar. Section switches 2 to (n-1) are all in the closed position, and the other section switches are in the open position. Each section busbar has one or more power sources, and each section switch is configured with automatic transfer function according to a unified procedure.

[0058] for Figure 3Under normal operating conditions, sectionalizing switches 2 through (n-1) are all in the closed position, with no sectionalizing automatic transfer function. Taking the sectionalizing automatic transfer functions of sectionalizing switches 1 and n as examples, the automatic transfer function of sectionalizing switch 1 searches for the first sectionalizing switch n in the open position towards sectionalizing switch 2 on the right, and the automatic transfer function of sectionalizing switch n searches for the first sectionalizing switch 1 in the open position towards sectionalizing switch (n-1) on the left. When a multi-power supply fault causes a loss of voltage on bus II through n, the automatic transfer functions of both sectionalizing switches 1 and n can detect the loss of voltage on the bus, which can be divided into two cases:

[0059] Scenario 1: If the backup transfer priority of sectionalizing switch 1 is higher than that of sectionalizing switch n, then the activation conditions for the automatic transfer switch of sectionalizing switch 1 when bus II to bus n loses voltage are: no voltage on bus II to bus n and no current from power supply 2-1 to power supply n. The activation conditions for the automatic transfer switch of sectionalizing switch n are: no voltage on bus II to bus n, no current from power supply 2-1 to power supply n, and the automatic transfer switch of sectionalizing switch 1 is not activated. After the voltage of bus II to bus n is lost, the automatic transfer switch of sectionalizing switch 1 is activated. Since the automatic transfer switch of sectionalizing switch 1 is activated, the automatic transfer switch of sectionalizing switch n is not activated. When the automatic transfer switch 1 is activated, it sends a command to trip the power supply switches 2-1 to n between sectionalizing switch 1 and sectionalizing switch n. After confirming the tripping, it sends a command to close sectionalizing switch 1. If sectionalizing switch 1 closes successfully, the busbar is restored to voltage, and the automatic transfer switches 1 and n are activated and returned to their original positions. If sectionalizing switch 1 fails to close, the automatic transfer switch 1 is activated and returned to its original position, and the automatic transfer switch n is activated and sends a command to close sectionalizing switch n to restore power supply to the busbar. This realizes the two-stage backup transfer function of the sections after the busbar loses voltage.

[0060] Scenario 2: If the backup transfer priority of sectionalizing switch 1 is lower than that of sectionalizing switch n, then the activation conditions for the automatic transfer switch of sectionalizing switch 1 when bus n loses voltage are: no voltage from bus II to bus n, no current from power supply 2-1 to power supply n, and the automatic transfer switch of sectionalizing switch n not activated. The activation conditions for the automatic transfer switch of sectionalizing switch n are: no voltage from bus II to bus n, and no current from power supply 2-1 to power supply n. After the voltage loss of bus II to bus n, the automatic transfer switch of sectionalizing switch n is activated. Since the automatic transfer switch of sectionalizing switch n is activated, the automatic transfer switch of sectionalizing switch 1 is not activated. The automatic transfer switch n of the sectionalizing switch trips the power supply 2-1 to power supply n between sectionalizing switch 1 and sectionalizing switch n. After confirming the trip, it sends a command to close sectionalizing switch n. If sectionalizing switch n closes successfully, the busbar is restored to voltage, and the automatic transfer switches 1 and n of the sectionalizing switch n are activated and returned to normal. If sectionalizing switch n fails to close, the automatic transfer switch n of the sectionalizing switch n is activated and returned to normal. Then, the automatic transfer switch 1 of the sectionalizing switch is activated and sends a command to close sectionalizing switch 1 to restore power supply to the busbar. This realizes the two-level backup transfer function of the sectionalizing switch after the busbar loses voltage.

[0061] Example 3

[0062] Figure 4This is a schematic diagram of the parallel operation of all busbars to the left of section switch n in the main wiring of a multi-power supply and multi-section busbar. When power supply 1 is under maintenance, section switches 1 to (n-1) are all in the closed position, and other section switches are in the open position. Each busbar has one or more power supplies, and each section switch is configured with automatic transfer function according to a unified procedure.

[0063] for Figure 4 Under normal operating conditions, sectionalizing switches 1 through (n-1) are all in the closed position, with no sectionalizing automatic transfer function. Taking the sectionalizing automatic transfer function of sectionalizing switch n as an example, the automatic transfer function of sectionalizing switch n does not find any sectionalizing switches in the open position when searching towards the left sectionalizing switch (n-1). When a multi-power supply fault causes the I-n bus to lose voltage, the starting conditions for the automatic transfer of sectionalizing switch n are: no voltage on I-n bus and no current from power supply 2-1 to power supply n. After the I-n bus loses voltage, the automatic transfer of sectionalizing switch n is activated, and an order is issued to trip the power supply 2-1 to power supply n between sectionalizing switch 1 and sectionalizing switch n. After confirming that the trip is open, an order is issued to close sectionalizing switch n to restore the power supply to the bus.

[0064] This invention also provides a sectionalized automatic transfer switch system adapted to multi-source power supply and multi-section busbar main wiring, corresponding to the aforementioned method, including:

[0065] The backup sectionalizing switch search module is configured to search for the first sectionalizing switch in the open position in the direction of the busbar connected to the standby automatic transfer sectionalizing switch.

[0066] The backup priority judgment module is configured to determine the backup priority of the first segmented switch in the segmented position and the standby automatic transfer segmented switch when the backup segmented switch search module finds the first segmented switch in the segmented position.

[0067] The first condition judgment action module is configured to determine that when the backup priority judgment module determines that the backup priority of the first segmented switch in the position is higher than that of the standby automatic transfer segmented switch, the standby automatic transfer action of the standby automatic transfer segmented switch is performed when the first condition is met.

[0068] The second condition judgment module is configured to, when the backup priority judgment module determines that the backup priority of the first segmented switch in the sectionalizing position is not higher than that of the standby automatic transfer segmented switch, determine that the standby automatic transfer segmented switch will automatically transfer when the second condition is met; and...

[0069] The third condition judgment action module is configured to determine that the standby automatic transfer section switch will automatically transfer when the standby section switch search module fails to find the section switch located at the position, and the third condition is met.

[0070] The first condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition and the standby automatic transfer function of the first sectionalizing switch in the detached position is not activated; the second condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition; the third condition is that all busbars and power supplies on the adjacent undervoltage busbar side of the standby automatic transfer sectionalizing switch both meet the undervoltage condition.

[0071] This invention also provides another computer device, including a processor and a memory configured to store a computer program capable of running on the processor; wherein, when the processor is configured to run the computer program, it performs the method steps described in the foregoing embodiments.

[0072] In practical applications, the aforementioned processor includes a Field-Programmable Gate Array (FPGA), and the processor can be a Central Processing Unit (CPU) or a Digital Signal Processor (DSP). It is understood that for different devices, the electronic devices used to implement the above-mentioned processor functions can also be other types, and this embodiment of the invention does not impose specific limitations.

[0073] The aforementioned memory can be volatile memory, such as random-access memory (RAM); or non-volatile memory, such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid-state drive (SSD); or a combination of the above types of memory, and provides instructions and data to the processor.

[0074] In an exemplary embodiment, the present invention also provides a computer-readable storage medium for storing a computer program.

[0075] In an exemplary embodiment, the present invention also provides a computer program product that, when executed by a processor, implements the method steps described in the foregoing embodiments.

[0076] Optionally, the computer-readable storage medium can be applied to any of the methods in the embodiments of the present invention, and the computer program causes the computer to execute the corresponding processes implemented by the processor in the various methods of the embodiments of the present invention. For the sake of brevity, these will not be described in detail here.

[0077] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of the present invention can be implemented using various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0078] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0079] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0080] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0081] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0082] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for sectionalized automatic transfer switching adapted to multi-source power supply and multi-section busbar main wiring, characterized in that: include, The system searches for the first sectionalizing switch in the open position on the busbar side connected to the standby automatic transfer switch. If found, it continues to determine the backup priority between the first sectionalizing switch in the open position and the standby automatic transfer switch. If the backup priority of the first sectionalizing switch in the open position is higher than that of the standby automatic transfer switch, the standby automatic transfer switch will activate when the first condition is met; otherwise, the standby automatic transfer switch will activate when the second condition is met. If no sectionalizing switch in the open position is found, the standby automatic transfer switch will activate when the third condition is met. The first condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition and the standby automatic transfer function of the first sectionalizing switch in the detached position is not activated; the second condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition; the third condition is that all busbars and power supplies on the adjacent undervoltage busbar side of the standby automatic transfer sectionalizing switch both meet the undervoltage condition.

2. The method as described in claim 1, characterized in that: If the backup priority of the first sectionalizing switch in the sectionalizing position is higher than that of the standby automatic transfer sectionalizing switch, then when the first condition is met, the power switch between the two sectionalizing switches will trip after a trip delay. Continue to determine whether the power switches between the two sectionalizing switches are both in the open position. If so, close the standby automatic transfer sectionalizing switch after a closing delay, and the bus voltage is restored, and the automatic transfer operation is successful. Otherwise, the switch fails to trip and the automatic transfer operation fails.

3. The method as described in claim 1, characterized in that: If the backup priority of the first sectionalizing switch in the sectionalizing position is not higher than that of the standby automatic transfer sectionalizing switch, then when the second condition is met, the power switch between the two sectionalizing switches will trip after a trip delay. Continue to determine whether the power switches between the two sectionalizing switches are both in the open position. If so, close the standby automatic transfer sectionalizing switch after a closing delay, and the bus voltage is restored, and the automatic transfer operation is successful. Otherwise, the switch fails to trip and the automatic transfer operation fails.

4. The method as described in claim 1, characterized in that: If no sectionalizing switch located at the sectionalizing position is found, all power switches on the undervoltage bus side will trip after a trip delay when the third condition is met. Continue to determine whether all power switches on the undervoltage bus side are in the open position. If so, close the aforementioned standby automatic transfer section switch after a closing delay, and the bus voltage is restored, and the automatic transfer operation is successful; otherwise, the switch fails to trip and the automatic transfer operation fails.

5. The method as described in claim 1, characterized in that: The multi-power supply multi-segment bus main wiring refers to a system that includes multiple bus segments, with the number of bus segments being ≥2; each bus segment has multiple power sources, with the number of power sources being ≥1; and each bus segment is connected to other bus segments via a sectionalizing switch.

6. The method as described in claim 5, characterized in that: Each power supply can be equipped with a maintenance check plate. When the power supply is under maintenance, the corresponding maintenance check plate can be engaged to ensure that the automatic transfer switch function can be used normally.

7. A sectionalized automatic transfer switch system adaptable to multi-source power supply and multi-section busbar main wiring, characterized in that: include, The backup sectionalizing switch search module is configured to search for the first sectionalizing switch in the open position in the direction of the busbar connected to the standby automatic transfer sectionalizing switch. The backup priority judgment module is configured to determine the backup priority of the first segmented switch in the segmented position and the standby automatic transfer segmented switch when the backup segmented switch search module finds the first segmented switch in the segmented position. The first condition judgment action module is configured to determine that when the backup priority judgment module determines that the backup priority of the first segmented switch in the position is higher than that of the standby automatic transfer segmented switch, the standby automatic transfer action of the standby automatic transfer segmented switch is performed when the first condition is met. The second condition judgment module is configured to, when the backup priority judgment module determines that the backup priority of the first segmented switch in the sectionalizing position is not higher than that of the standby automatic transfer segmented switch, determine that the standby automatic transfer segmented switch will automatically transfer when the second condition is met; and... The third condition judgment action module is configured to determine that the standby automatic transfer section switch will automatically transfer when the standby section switch search module fails to find the section switch located at the position, and the third condition is met. The first condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition and the standby automatic transfer function of the first sectionalizing switch in the detached position is not activated; the second condition is that the busbar and power supply between the first sectionalizing switch in the detached position and the standby automatic transfer sectionalizing switch both meet the undervoltage condition; the third condition is that all busbars and power supplies on the adjacent undervoltage busbar side of the standby automatic transfer sectionalizing switch both meet the undervoltage condition.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor; characterized in that: When the processor executes the computer program, it implements the steps of the segmented backup automatic transfer method as described in any one of claims 1 to 6 for adapting to multi-source power supply and multi-segment bus main wiring.

9. A computer-readable storage medium storing a computer program; characterized in that: When the computer program is executed by the processor, it implements the steps of the segmented backup automatic transfer method as described in any one of claims 1 to 6 for adapting to multi-source power supply and multi-segment bus main wiring.

10. A computer program product, characterized in that: When the computer program product is executed by a processor, it implements the steps of the segmented backup automatic transfer method as described in any one of claims 1 to 6 for adapting to multi-power supply multi-segment bus main wiring.

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