Abnormal handling methods, control systems and uninterruptible power supplies

Abstract

The embodiment of the application relates to the technical field of power systems, and discloses an abnormality processing method, a control system and an uninterruptible power supply. The abnormality processing method comprises the following steps: at least one of a plurality of system cards detects an output parameter of the uninterruptible power supply; if any system card detects that the output parameter is out of a threshold range, then the system cards communicate with each other to determine the detection result of the output parameter of other system cards; and if other system cards detect that the output parameter is within the threshold range, then the other system cards control the uninterruptible power supply.

Description

Technical Field

[0001] This application relates to the field of power system technology, specifically to an anomaly handling method, a control system, and an uninterruptible power supply. Background Technology

[0002] An uninterruptible power supply (UPS) is a power supply containing energy storage devices, primarily used to provide uninterrupted power to equipment with high power stability requirements. When the mains power (i.e., industrial frequency AC power) input is normal, the UPS stabilizes the mains power and supplies it to the load. Simultaneously, the UPS charges its internal battery. When the mains power is interrupted (e.g., during a power outage), the UPS immediately switches to DC power from the battery to continue supplying the load with the same AC power as the mains, ensuring the load continues to operate normally and thus protecting the load's hardware and software from damage.

[0003] UPS systems are equipped with system cards. These system cards can view and record the UPS status, and control and manage the UPS. Multiple system cards can be configured in a UPS for better redundancy; however, multiple system cards also increase the number of potential failure points, meaning that a malfunction in any system card can cause UPS failure. Summary of the Invention

[0004] In view of this, the embodiments of this application provide an anomaly handling method, a control system, and an uninterruptible power supply, which can give full play to the redundancy of multiple system cards in the UPS, avoid erroneous shutdown of the UPS, and enable the UPS to operate more smoothly and effectively.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] This application provides an anomaly handling method for an uninterruptible power supply (UPS), comprising: at least one of a plurality of system cards detecting the output parameters of the UPS; if any system card detects that the output parameters exceed a threshold range, determining the detection results of the other system cards on the output parameters through inter-card communication; if the other system cards detect that the output parameters are within the threshold range, controlling the UPS by the other system cards.

[0007] In the above scheme, the multiple system cards include: a main system card and a backup system card; the output parameters of the uninterruptible power supply are detected by at least one of the multiple system cards, including: the output parameters are detected by the main system card and the backup system card simultaneously; or, the output parameters are detected by the main system card.

[0008] In the above scheme, after determining the detection results of the output parameters by other system cards, the method further includes: if other system cards detect that the output parameters exceed the threshold range, then shut down the uninterruptible power supply.

[0009] In the above scheme, after the uninterruptible power supply is controlled by other system cards, the method further includes: alarming the system card for an abnormality.

[0010] The above scheme further includes the following method: if the inter-card communication fails, an alarm is triggered indicating an abnormality in the inter-card communication, and the uninterruptible power supply is shut down.

[0011] In the above scheme, the output parameters include: output voltage and / or output frequency.

[0012] This application embodiment also provides a control system for an uninterruptible power supply (UPS), comprising: a plurality of system cards; the control system being configured to have at least one of the plurality of system cards detect output parameters of the UPS; and, if any system card detects that the output parameter exceeds a threshold range, then through inter-card communication, determine the detection results of the other system cards for the output parameter; and, if the other system cards detect that the output parameter is within the threshold range, then the other system cards control the UPS.

[0013] In the above scheme, the multiple system cards include: a main system card and a backup system card; the control system is further configured to have the main system card and the backup system card simultaneously detect the output parameters; or, the main system card detects the output parameters.

[0014] In the above scheme, each system card includes a digital signal processor.

[0015] This application also provides an uninterruptible power supply, including the control system described in the above solution.

[0016] Therefore, the embodiments of this application provide an anomaly handling method, a control system, and an uninterruptible power supply. If any system card detects that an output parameter exceeds a threshold range, and other system cards detect that the output parameter is within the threshold range, then the normal system card is used to control the UPS. This fully utilizes the redundancy of multiple system cards in the UPS, avoids erroneous UPS shutdowns, and enables the UPS to operate more smoothly and efficiently. Attached Figure Description

[0017] Figure 1 A schematic diagram of the implementation process of the uninterruptible power supply anomaly handling method provided in the embodiments of this application. Figure 1 ;

[0018] Figure 2 A schematic diagram of the implementation process of the uninterruptible power supply anomaly handling method provided in the embodiments of this application. Figure 2 ;

[0019] Figure 3 A schematic diagram of the implementation process of the uninterruptible power supply anomaly handling method provided in the embodiments of this application. Figure 3 ;

[0020] Figure 4 Schematic diagram of the composition structure of the uninterruptible power supply control system provided in the embodiments of this application Figure 1 ;

[0021] Figure 5 Schematic diagram of the composition structure of the uninterruptible power supply control system provided in the embodiments of this application Figure 2 ;

[0022] Figure 6 This is a schematic diagram of the composition structure of an uninterruptible power supply provided in an embodiment of this application. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application are further described in detail below with reference to the accompanying drawings and embodiments. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the following description, references to "some embodiments" refer to a subset of all possible embodiments. It is understood that "some embodiments" may be the same or different subsets of all possible embodiments and may be combined with each other without conflict. The terms "first / second / third" are used merely to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application.

[0026] Figure 1 This application provides a schematic diagram of the implementation process of an uninterruptible power supply (UPS) anomaly handling method, as illustrated in the embodiments below. Figure 1 As shown, the method includes steps S101 to S103.

[0027] S101, At least one of the multiple system cards detects the output parameters of the uninterruptible power supply.

[0028] In this embodiment, during the operation of the UPS, the system card can continuously monitor the UPS output parameters. The system card used for monitoring can be all or part of multiple system cards; for example, if the UPS has three system cards, all three system cards can monitor the UPS output parameters simultaneously, or two system cards can monitor the UPS output parameters simultaneously, or only one system card can monitor the UPS output parameters.

[0029] In some embodiments of this application, the multiple system cards include a primary system card and a backup system card. The UPS employs dual system cards (a primary system card and a backup system card) for redundancy. That is, normally the primary system card controls the UPS; if the primary system card malfunctions, the backup system card takes over control. Furthermore, both the primary and backup system cards can simultaneously monitor output parameters; alternatively, the primary system card can monitor output parameters.

[0030] In some embodiments of this application, the output parameters detected by the system card may include: output voltage and / or output frequency. The UPS outputs AC power, wherein the output voltage may be the effective value of the AC voltage output by the UPS, and the output frequency may be the frequency of the AC power output by the UPS.

[0031] S102. If any system card detects that the output parameter exceeds the threshold range, the detection results of the other system cards on the output parameter are determined through inter-card communication.

[0032] In this embodiment, when multiple system cards simultaneously detect the output parameters of the UPS, if any one of the system cards detects that the output parameter exceeds a threshold range, the detection results of the other system cards can be directly obtained through inter-card communication. For example, when the primary system card and the backup system card simultaneously detect the output parameters of the UPS, if the primary system card detects that the output parameter exceeds the threshold range, the detection result of the backup system card can be determined through inter-card communication.

[0033] Correspondingly, when only one system card is monitoring the UPS output parameters, if that system card detects that the output parameters exceed the threshold range, it can use inter-card communication to notify other system cards to monitor the UPS output parameters and obtain their monitoring results. For example, if only the primary system card is monitoring the UPS output parameters, and it detects that the output parameters exceed the threshold range, it can use inter-card communication to notify the backup system card to monitor the UPS output parameters and obtain its monitoring results.

[0034] In this embodiment, the threshold range of the output parameters can be set according to the output parameters of the UPS during normal operation. For example, if the output voltage of the UPS during normal operation is 220V, the threshold range of the output voltage can be set to 220V±5V, or it can be set to 220V±30V. Similarly, if the output frequency of the UPS during normal operation is 50Hz, the threshold range of the output frequency can be set to 50Hz±1Hz, or it can be set to 50Hz±2Hz.

[0035] S103. If other system cards detect that the output parameters are within the threshold range, the uninterruptible power supply shall be controlled by the other system cards.

[0036] In this embodiment of the application, if any system card detects that the output parameter exceeds the threshold range, and other system cards detect that the output parameter is within the threshold range, then the other system cards can control the UPS.

[0037] For example, if the main system card detects that the output parameters are outside the threshold range, and the backup system card detects that the output parameters are within the threshold range, it indicates that there is an abnormality in the main system card, but no abnormality in the UPS system. Therefore, a switchover can be performed, and the backup system card can control the UPS.

[0038] Understandably, if any system card detects that its output parameter exceeds the threshold range, but other system cards detect that the output parameter is within the threshold range, it indicates that only some system cards are malfunctioning, while the UPS system itself is functioning correctly. Therefore, the normal system cards are used to control the UPS. This fully utilizes the redundancy of multiple system cards within the UPS, preventing erroneous UPS shutdowns and enabling the UPS to operate more smoothly and efficiently.

[0039] In some embodiments of this application, Figure 1 Following step S102, the following steps are also included: Figure 2 Step S104 shown will be explained in conjunction with each step.

[0040] S104. If other system cards detect that the output parameters exceed the threshold range, the uninterruptible power supply will be shut down.

[0041] In this embodiment of the application, if any system card detects that the output parameter exceeds the threshold range, and other system cards also detect that the output parameter exceeds the threshold range, then the UPS needs to be shut down.

[0042] For example, if the main system card detects that the output parameters are outside the threshold range, and the backup system card also detects that the output parameters are outside the threshold range, it indicates that the UPS system is malfunctioning, and therefore the UPS needs to be shut down for inspection.

[0043] Understandably, if any system card detects that an output parameter exceeds the threshold range, and other system cards also detect output parameters exceeding the threshold range, it indicates an anomaly in the UPS system, and the UPS will be shut down for inspection. This makes the determination of UPS faults more accurate, ensuring that UPS faults can be detected and resolved in a timely manner.

[0044] In some embodiments of this application, Figure 1 Following step S103, the following steps are also included: Figure 3 Step S105 shown will be explained in conjunction with each step.

[0045] S105, The alarm system card is malfunctioning.

[0046] In this embodiment, if any system card detects that the output parameter exceeds the threshold range, and other system cards detect that the output parameter is within the threshold range, then the system card is switched to control the UPS. At this time, some system cards in the UPS are malfunctioning and have lost their redundancy backup function. Therefore, it is necessary to alarm the system card for malfunction so that the malfunctioning system card can be repaired or replaced at an appropriate time (such as when the UPS is not running).

[0047] For example, if the main system card malfunctions and the system switches to the backup system card to control the UPS, an alarm can be triggered indicating that the main system card needs to be inspected or replaced.

[0048] It is understandable that timely alarms should be issued when a system card malfunctions, so that the faulty system card can be repaired or replaced in a timely manner, thereby ensuring that the multiple system cards in the UPS can effectively play a redundancy role.

[0049] In some embodiments of this application, the abnormal handling method of the uninterruptible power supply further includes step S106, which will be described in conjunction with each step.

[0050] S106. If inter-card communication fails, an alarm will be triggered indicating an abnormality in inter-card communication, and the uninterruptible power supply will be shut down.

[0051] Understandably, if inter-card communication fails, information cannot be exchanged between multiple system cards. Consequently, the system cards lose their redundancy and backup function, and it becomes even more difficult to detect UPS anomalies. Therefore, in the event of inter-card communication failure, issuing an alarm promptly and shutting down the UPS can help resolve the UPS fault in a timely manner and prevent more serious problems.

[0052] Figure 4 A schematic diagram of the composition structure of a control system for an uninterruptible power supply provided in an embodiment of this application is shown below. Figure 4 As shown, the control system 200 includes: multiple system cards 100.

[0053] The control system 200 is configured to detect the output parameters of the uninterruptible power supply by at least one of a plurality of system cards 100; and if any system card 100 detects that the output parameters exceed a threshold range, the detection results of the other system cards 100 on the output parameters are determined through inter-card communication; and if the other system cards 100 detect that the output parameters are within the threshold range, the other system cards 100 control the uninterruptible power supply.

[0054] In some embodiments of this application, reference is made to Figure 5 The system cards include: main system card 101 and backup system card 102.

[0055] The control system 200 is also configured to have the main system card 101 and the backup system card 102 simultaneously detect the output parameters; or, the main system card 101 may detect the output parameters.

[0056] In some embodiments of this application, reference is made to Figure 4 The control system 200 is also configured to shut down the uninterruptible power supply if other system cards 100 detect that the output parameters exceed the threshold range.

[0057] In some embodiments of this application, reference is made to Figure 4 The control system 200 is also configured to alarm the system card for abnormalities.

[0058] In some embodiments of this application, reference is made to Figure 4 The control system 200 is also configured to alarm if inter-card communication fails, indicating an abnormality in inter-card communication, and to shut down the uninterruptible power supply.

[0059] In some embodiments of this application, the output parameters include: output voltage and / or output frequency.

[0060] In some embodiments of this application, reference is made to Figure 4 Each system card 100 includes: a digital signal processor (DSP).

[0061] Figure 6 This is a schematic diagram of the composition structure of an uninterruptible power supply provided in an embodiment of this application, as shown below. Figure 6 As shown, the uninterruptible power supply 300 includes a control system 200. The control system 200 includes the technical features described in the above embodiments.

[0062] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above steps / processes do not imply a sequential order of execution; the execution order of each step / process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above embodiments of this application are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0063] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0064] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0065] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0066] Furthermore, in the various embodiments of this application, all functional units can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in a combination of hardware and software functional units. Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), magnetic disks, or optical disks.

[0067] Alternatively, if the integrated units described above are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence or the part that contributes to related technologies, can be embodied in the form of a software product. This computer software product is stored in a storage medium, including instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, magnetic disks, or optical disks.

[0068] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. An abnormality processing method of an uninterruptible power supply, characterized by, The method comprises: detecting, by at least one of a plurality of system cards, an output parameter of an uninterruptible power supply; wherein the plurality of system cards comprises a primary system card and a backup system card; the output parameter comprises an output voltage and / or an output frequency; detecting, by at least one of the plurality of system cards, the output parameter of the uninterruptible power supply comprises simultaneously detecting, by the primary system card and the backup system card, the output parameter, or detecting, by the primary system card, the output parameter; if any of the system cards detects that the output parameter is out of a threshold range, determining, through inter-card communication, a detection result of the output parameter by other system cards; if the other system cards detect that the output parameter is within the threshold range, controlling, by the other system cards, the uninterruptible power supply; if the inter-card communication fails, alarming that the inter-card communication is abnormal, and shutting down the uninterruptible power supply.

2. The abnormality processing method of an uninterruptible power supply according to claim 1, characterized by, After determining the detection result of the output parameter by the other system cards, the method further comprises: if the other system cards detect that the output parameter is out of the threshold range, shutting down the uninterruptible power supply.

3. The abnormality processing method of an uninterruptible power supply according to claim 1, characterized by, After controlling, by the other system cards, the uninterruptible power supply, the method further comprises: alarming that the system card is abnormal.

4. A control system for an uninterruptible power supply, characterized by The method comprises: a plurality of system cards; the control system is configured to detect, by at least one of the plurality of system cards, an output parameter of an uninterruptible power supply; and if any of the system cards detects that the output parameter is out of a threshold range, determining, through inter-card communication, a detection result of the output parameter by other system cards; and if the other system cards detect that the output parameter is within the threshold range, controlling, by the other system cards, the uninterruptible power supply; and if the inter-card communication fails, alarming that the inter-card communication is abnormal, and shutting down the uninterruptible power supply; wherein the plurality of system cards comprises a primary system card and a backup system card; the output parameter comprises an output voltage and / or an output frequency; detecting, by at least one of the plurality of system cards, the output parameter of the uninterruptible power supply comprises: simultaneously detecting, by the primary system card and the backup system card, the output parameter, or detecting, by the primary system card, the output parameter.

5. The control system of an uninterruptible power supply of claim 4, wherein, The plurality of system cards comprises a primary system card and a backup system card; the control system is further configured to simultaneously detect, by the primary system card and the backup system card, the output parameter, or detect, by the primary system card, the output parameter.

6. The control system of an uninterruptible power supply according to claim 4 or 5, characterized in that, Each of the system cards comprises a digital signal processor.

7. An uninterruptible power supply, characterized by The method comprises: the control system of any one of claims 4 to 6.

Images