Uninterruptible power supply control methods, uninterruptible power supplies and computer-readable storage media

Abstract

This invention provides an uninterruptible power supply (UPS) control method, a UPS, and a computer-readable storage medium. The method includes: acquiring current operating data of the UPS unit and uploading the operating data to a cloud platform; acquiring a first power failure probability and a second power failure probability from the cloud platform according to a preset period, wherein the first power failure probability is the power failure probability of the main power supply branch, and the second power failure probability is the power failure probability of the bypass power supply branch; generating a first prohibition flag when the UPS is operating in an inverter power supply mode powered by the main power supply branch and the first power failure probability is greater than a first threshold; and generating a second prohibition flag when the UPS is operating in an inverter power supply mode powered by the main power supply branch and the second power failure probability is greater than a second threshold. This invention can improve the stability of UPS operation.

Description

Technical Field

[0001] This invention relates to the field of uninterruptible power supplies (UPS), and more specifically, to a UPS control method, a UPS, and a computer-readable storage medium. Background Technology

[0002] Currently, online UPS systems typically switch to battery power after a rectifier failure, and then switch back to bypass power once the battery power reaches the end-of-life (EOD) point. This is the traditional power supply method. When a UPS switches to battery inverter power after a rectifier failure, it depletes the battery's stored power. Once the battery is completely depleted, it switches back to bypass power. However, if the bypass power fails, the load will lose power. This is detrimental to the stable power supply of the UPS. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an uninterruptible power supply control method, an uninterruptible power supply, and a computer-readable storage medium, in response to the above-mentioned problems.

[0004] The technical solution of this invention to solve the above-mentioned technical problems is to provide an uninterruptible power supply (UPS) control method, wherein the UPS includes a rectifier module, an inverter module, an energy storage module, a bypass module, and a control module, and the method includes the following steps performed by the control module:

[0005] Obtain the current operating data of the uninterruptible power supply unit and upload the operating data to the cloud platform. The operating data includes the data of the main power supply branch and the bypass power supply branch of the uninterruptible power supply.

[0006] According to a preset period, the cloud platform obtains a first power failure probability and a second power failure probability. The first power failure probability and the second power failure probability are generated by the cloud platform in real time based on the historical data of the operation of the main power supply branch and the bypass power supply branch, combined with the current season, news reports and weather data. The first power failure probability is the power failure probability of the main power supply branch, and the second power failure probability is the power failure probability of the bypass power supply branch.

[0007] When the uninterruptible power supply is operating in the inverter power supply mode powered by the main power supply branch and the first power failure probability is greater than the first threshold, a first prohibition flag is generated. When the uninterruptible power supply is operating in the inverter power supply mode powered by the main power supply branch and the first prohibition flag exists, the uninterruptible power supply stops performing self-tests on the rectifier module, inverter module, energy storage module, and bypass module.

[0008] When the uninterruptible power supply (UPS) is operating in inverter power supply mode powered by the main power supply branch and the second power failure probability is greater than the second threshold, a second prohibition flag is generated. When the UPS is operating in inverter power supply mode powered by the main power supply branch and the second prohibition flag exists, the UPS is prohibited from entering the bypass priority power supply mode.

[0009] As a further improvement of the present invention, the method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and a first prohibition flag is present, increasing the DC bus voltage of the uninterruptible power supply to a preset voltage, wherein the preset voltage is greater than the normal operating voltage of the DC bus.

[0010] As a further improvement of the present invention, the method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and a second prohibition flag is present, causing the uninterruptible power supply to perform a self-test of the bypass prohibition module.

[0011] As a further improvement of the present invention, the method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and the first power failure probability is greater than a third threshold, causing the uninterruptible power supply to shut down the rectifier module and causing the uninterruptible power supply to operate in an inverter power supply mode powered by the energy storage module, wherein the third threshold is greater than the first threshold.

[0012] As a further improvement of the present invention, the method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and the second power failure probability is greater than a fourth threshold, causing the uninterruptible power supply to stop tracking the bypass module, wherein the fourth threshold is greater than the second threshold.

[0013] As a further improvement of the present invention, the method includes: obtaining a third power failure probability from the cloud platform according to a preset period, wherein the third power failure probability is generated by the cloud platform in real time based on the historical data of the operation of the main power supply branch and the bypass power supply branch and combined with the current season, news reports and weather data, and the third power failure probability is the power failure probability of the bypass power supply branch when the main power supply branch fails.

[0014] When the uninterruptible power supply is operating in inverter power supply mode powered by the main power supply branch, if the main power supply branch loses power and the third power failure probability is greater than the fifth threshold, the uninterruptible power supply is switched to inverter power supply mode powered by the energy storage module.

[0015] As a further improvement of the present invention, the method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch, and the main power supply branch fails and the third power failure probability is less than or equal to a fifth threshold, the uninterruptible power supply is made to operate in a bypass power supply mode.

[0016] As a further improvement of the present invention, the method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by an energy storage module, if the second power failure probability is less than or equal to a sixth threshold, the uninterruptible power supply is switched to a bypass power supply mode.

[0017] When the uninterruptible power supply is operating in bypass power supply mode, if the second power failure probability is greater than the sixth threshold, the uninterruptible power supply is switched to inverter power supply mode powered by battery.

[0018] The present invention also provides an uninterruptible power supply, the uninterruptible power supply including a memory and a processor, the memory storing a computer program executable by the processor, and the processor executing the computer program to implement the steps of the uninterruptible power supply control method as described above.

[0019] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the uninterruptible power supply control method described above.

[0020] The present invention has the following beneficial effects: on the one hand, by uploading the operating data to the cloud platform, it provides the cloud platform with the raw data source for big data analysis; on the other hand, it obtains the power failure probability of the main power supply branch and the bypass power supply branch from the cloud platform, and adjusts the control strategy of the uninterruptible power supply according to the above power failure probability, thereby improving the stability of the uninterruptible power supply operation. Attached Figure Description

[0021] Figure 1 This is a flowchart illustrating the uninterruptible power supply control method provided in an embodiment of the present invention.

[0022] Figure 2 This is a flowchart illustrating an uninterruptible power supply control method according to another embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] like Figure 1The diagram shows a flowchart of an uninterruptible power supply (UPS) control method provided in an embodiment of the present invention. This method can be applied to UPS systems, which include a rectifier module, an inverter module, an energy storage module, a bypass module, and a control module. The input of the rectifier module is connected to the main power supply branch (including the main power supply substation and various levels of lines and equipment connecting the main power supply substation and the rectifier module). The output of the rectifier module is connected to the inverter module via a DC bus. The output of the inverter module has an AC output device. The energy storage module is connected to the DC bus. The input of the bypass module is connected to the bypass power supply branch (including the bypass power supply substation and various levels of lines and equipment connecting the bypass power supply substation and the bypass module, such as a mains power supply branch). The output of the bypass module is connected to an AC output device (e.g., an electrical box). The control module is connected to the rectifier module, inverter module, bypass module, and switching devices (e.g., contactors) in the lines, and controls the operation of the entire UPS. Electrical equipment can be connected to the AC output device to receive power. The aforementioned rectifier module, inverter module, energy storage module, bypass module, and their connection methods can all adopt conventional technologies in this field, and will not be elaborated further here.

[0025] The uninterruptible power supply (UPS) control method of this embodiment can be integrated into the aforementioned UPS control module. That is, the method is executed by the control module and includes the following steps:

[0026] Step S11: The control module obtains the current operating data of the uninterruptible power supply unit and uploads the operating data to the cloud platform. The above operating data includes the data of the main power supply branch and the bypass power supply branch of the uninterruptible power supply, such as the number of the main power supply branch and the number of the bypass power supply branch.

[0027] The main power supply branch and bypass power supply branch in the above-mentioned operational data can be input after the uninterruptible power supply is installed, or they can be input or collected during operation. Accordingly, the control module includes a communication unit or is connected to a communication unit, thereby enabling the uploading of operational data to the cloud platform. The cloud platform can consist of one or more computer systems and can provide computing, networking, and storage capabilities.

[0028] Step S12: The control module obtains the first power failure probability and the second power failure probability from the cloud platform according to a preset cycle. The first power failure probability and the second power failure probability are generated by the cloud platform in real time based on the historical data of the main power supply branch and the bypass power supply branch and combined with the current season, news reports and weather data. The first power failure probability is the power failure probability of the main power supply branch and the second power failure probability is the power failure probability of the bypass power supply branch.

[0029] Specifically, the aforementioned first and second power outage probabilities can be calculated and generated in real time based on a specific calculation model. This model is trained using operational data from the main power supply branch and bypass power supply branch, combined with data related to the main power supply branch and bypass power supply branch, such as seasonality, coal prices, power plant anomalies, and weather. When generating the first and second power outage probabilities, the cloud platform calculates and generates these probabilities in real time based on current seasonality, coal prices, power plant anomalies, and weather data. For example, the first and second power outage probabilities are relatively higher in summer; relatively higher under higher coal prices; relatively higher during typhoon weather; relatively higher when the power plant is experiencing an anomaly; and relatively higher when the main power supply branch and bypass power supply branch have a large number of connected loads.

[0030] The aforementioned historical data includes operational data uploaded by equipment associated with any node in the main power supply branch or bypass power supply branch, such as other uninterruptible power supplies connected to the same main power supply substation, the same bypass power supply substation, or the same line segment. Specifically, the aforementioned calculation model can be generated based on a large-scale artificial intelligence model.

[0031] Step S13: The control module generates a first prohibition flag when the uninterruptible power supply (UPS) is operating in inverter power supply mode powered by the main power supply branch and the first power failure probability is greater than the first threshold. When the UPS is operating in inverter power supply mode powered by the main power supply branch and the first prohibition flag is present, the control module controls the UPS to stop self-testing the rectifier module, inverter module, energy storage module, and bypass module. This avoids affecting the stability of the UPS due to various switching actions during the self-testing process of the rectifier module, inverter module, energy storage module, and bypass module.

[0032] The first threshold can be set according to the specific application of the uninterruptible power supply. For example, for applications with high stability requirements, a relatively small first threshold can be set; for applications with relatively low stability requirements, a relatively large first threshold can be set.

[0033] In one embodiment of the present invention, when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and the first prohibition flag is present, the control module further controls the DC bus voltage of the uninterruptible power supply to be increased to a preset voltage, which is greater than the normal operating voltage of the DC bus.

[0034] Typically, the bus voltage of an uninterruptible power supply (UPS) is set to its rated operating point Vdc (i.e., the normal operating voltage of the DC bus) based on the bus capacitors, the stress on power devices, and the limitations of the input topology. Briefly increasing the DC bus voltage to a preset level will not damage the bus capacitors or other power devices. On the contrary, increasing the DC bus voltage allows the bus capacitors to store more energy, which is more conducive to the stable switching of the inverter module after a power outage in the main power supply branch. Therefore, when the probability of a power outage in the main power supply branch (i.e., the first probability) is greater than a first threshold, increasing the DC bus voltage of the UPS will improve the stability of the output voltage.

[0035] Step S14: A second prohibition flag is generated when the uninterruptible power supply (UPS) is operating in inverter power supply mode powered by the main power supply branch and the second power failure probability is greater than the second threshold. When the UPS is operating in inverter power supply mode powered by the main power supply branch and the second prohibition flag is present, the control module controls the UPS to prevent it from entering the bypass priority power supply mode. In this way, when the main power supply branch fails, the UPS will not enter the bypass priority power supply mode, avoiding frequent switching due to bypass power supply branch failures, which would affect the stability of downstream power consumption.

[0036] The second threshold can be set according to the specific application of the uninterruptible power supply. For example, for applications with high stability requirements, a relatively small second threshold can be set; for applications with relatively low stability requirements, a relatively large second threshold can be set.

[0037] In one embodiment of the present invention, when the uninterruptible power supply (UPS) is operating in inverter power supply mode powered by the main power supply branch and the second prohibition flag is present, the control module also controls the UPS to prohibit the bypass module self-test. This avoids the stability of the UPS being affected by various switching actions during the bypass module self-test.

[0038] The aforementioned uninterruptible power supply (UPS) control method, on the one hand, provides the cloud platform with raw data for big data analysis by uploading operational data to the cloud platform, and on the other hand, obtains the power failure probability of the main power supply branch and the bypass power supply branch from the cloud platform, and adjusts the control strategy of the UPS according to the power failure probability, thereby improving the safety of UPS operation.

[0039] In one embodiment of the present invention, in step S11, the current operating data acquired and uploaded by the control module includes, in addition to the main power supply branch and the bypass power supply branch, the voltage value of the main power supply branch, the frequency value of the main power supply branch voltage, the voltage value of the bypass power supply branch, the frequency value of the bypass power supply branch voltage, whether the rectifier module is normal, whether the inverter module is normal, whether the bypass module is normal, whether the energy storage module is normal, the number of serious faults of the machine, the number of times the machine switches the bypass, the number of times the machine battery EOD occurs, and the service life of the machine battery. Accordingly, the calculation model used to generate the first power failure probability and the second power failure probability includes the above-mentioned operating parameters. For example, the first power failure probability includes parameters for whether the rectifier module is normal and whether the inverter module is normal. When the rectifier module or the inverter module is abnormal, the first power failure probability generated by the cloud platform is 100%.

[0040] When the main power supply branch loses power, it is often accompanied by abnormal voltage frequency and amplitude. To avoid damage to the rectifier module caused by abnormal voltage frequency during the moment of power failure, which could lead to phase-locked loop problems in the rectifier module, in one embodiment of the present invention, the uninterruptible power supply control method, in addition to steps S11-S14, further includes: when the uninterruptible power supply is operating in inverter power supply mode powered by the main power supply branch and the first power failure probability is greater than a third threshold, the control module control cabinet shuts down the rectifier module and controls the uninterruptible power supply to operate in inverter power supply mode powered by the energy storage module, thereby avoiding impact damage to the rectifier module during the moment of power failure of the main power supply branch. The third threshold is greater than the first threshold. This third threshold can also be set according to the application of the uninterruptible power supply, for example, a relatively small third threshold can be set for applications with high stability requirements, and a relatively large third threshold can be set for applications with relatively low stability requirements.

[0041] To avoid affecting the inverter module's output due to abnormal voltage frequency and amplitude during a power outage in the bypass power supply branch, in one embodiment of the present invention, the uninterruptible power supply (UPS) control method, in addition to steps S11-S14, further includes: when the UPS is operating in inverter power supply mode powered by the main power supply branch and the second power outage probability is greater than a fourth threshold, the control module controls the UPS to stop tracking the bypass module. The fourth threshold is greater than the second threshold, and this fourth threshold can also be set according to the application of the UPS. For example, for applications with high stability requirements, a relatively small fourth threshold can be set; for applications with relatively low stability requirements, a relatively large fourth threshold can be set.

[0042] like Figure 2 As shown, in one embodiment of the present invention, the uninterruptible power supply control method, in addition to steps S11-S14, further includes the following steps:

[0043] Step S15: Obtain the third power failure probability from the cloud platform according to a preset period. This third power failure probability is generated in real time by the cloud platform based on historical data of the operation of the main power supply branch and the bypass power supply branch, and the third power failure probability is the power failure probability of the bypass power supply branch when the main power supply branch fails. This third power failure probability is also calculated and generated by the cloud platform through a trained calculation model.

[0044] Step S16: When the uninterruptible power supply is operating in the inverter power supply mode powered by the main power supply branch, if the main power supply branch fails and the third power failure probability is greater than the fifth threshold, the control module controls the uninterruptible power supply to switch to the inverter power supply mode powered by the energy storage module.

[0045] Unlike traditional uninterruptible power supplies (UPS) that directly switch to inverter power from energy storage when the main power supply branch fails, and then switch to bypass power only after the energy storage is discharged to the EOD point, thus causing the UPS to lose its last line of protection, this embodiment first determines the value of a third power failure probability after the main power supply branch fails. The UPS only switches to inverter mode powered by the energy storage module when the third power failure probability is greater than a fifth threshold. When the third power failure probability is less than or equal to the fifth threshold, the UPS switches to bypass power supply mode.

[0046] In one embodiment of the present invention, the above-mentioned uninterruptible power supply (UPS) control method further includes: when the UPS is operating in inverter power supply mode powered by the energy storage module (at which time the main power supply branch is powered down), if the second power failure probability is less than or equal to a sixth threshold, the control module controls the UPS to switch to bypass power supply mode. Conversely, when the UPS is operating in bypass power supply mode (at which time the main power supply branch is powered down), if the second power failure probability is greater than the sixth threshold, the control unit controls the UPS to switch to inverter power supply mode powered by the battery.

[0047] By using the above methods, the power supply from the energy storage unit can be minimized while ensuring the absolute reliability of the uninterruptible power supply output. This allows the energy stored in the energy storage unit to be used only when neither the main power supply branch nor the bypass power supply branch can provide power, thereby extending the output power supply duration of the uninterruptible power supply as much as possible.

[0048] The present invention also provides an uninterruptible power supply, the uninterruptible power supply including a memory and a processor, the memory storing a computer program executable by the processor, and the processor executing the computer program to implement the steps of the uninterruptible power supply control method described above.

[0049] The dual-drive gantry control system in this embodiment is similar to the one described above. Figure 1-2The uninterruptible power supply control methods in the corresponding embodiments belong to the same concept. The specific implementation process can be found in the corresponding method embodiments. Furthermore, the technical features in the method embodiments are all applicable to this device embodiment, and will not be repeated here.

[0050] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the uninterruptible power supply control method described above.

[0051] The computer-readable storage medium in this embodiment is the same as described above. Figure 1-2 The uninterruptible power supply control methods in the corresponding embodiments belong to the same concept. The specific implementation process can be found in the corresponding method embodiments. The technical features in the method embodiments are also applicable to this storage medium embodiment, and will not be repeated here.

[0052] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each 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.

[0053] Those skilled in the art will understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the functions can be assigned to different functional units and modules as needed. The functional units and modules in the embodiments can be integrated into a single processor, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units can be implemented in hardware or as software functional units. Furthermore, the specific names of the functional units and modules are merely for easy differentiation and are not intended to limit the scope of protection of this application. The specific working processes of the units and modules in the above system can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0054] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0055] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0056] In the embodiments provided in this application, it should be understood that the disclosed uninterruptible power supply control method and uninterruptible power supply can be implemented in other ways. For example, the uninterruptible power supply embodiments described above are merely illustrative.

[0057] Furthermore, the functional units in the various embodiments of this application can be integrated into a single processor, or each unit can exist physically separately, or two or more units can be integrated into a single unit. The integrated units described above can be implemented in hardware or as software functional units.

[0058] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or interface switching device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0059] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for controlling an uninterruptible power supply (UPS), wherein the UPS comprises a rectifier module, an inverter module, an energy storage module, a bypass module, and a control module, characterized in that: The method includes the following steps performed by the control module: Obtain the current operating data of the uninterruptible power supply and upload the operating data to the cloud platform. The operating data includes the data of the main power supply branch and the bypass power supply branch of the uninterruptible power supply. According to a preset period, the cloud platform obtains a first power failure probability and a second power failure probability. The first power failure probability and the second power failure probability are generated by the cloud platform in real time based on the historical data of the operation of the main power supply branch and the bypass power supply branch, combined with the current season, news reports and weather data. The first power failure probability is the power failure probability of the main power supply branch, and the second power failure probability is the power failure probability of the bypass power supply branch. When the uninterruptible power supply is operating in the inverter power supply mode powered by the main power supply branch and the first power failure probability is greater than the first threshold, a first prohibition flag is generated. When the uninterruptible power supply is operating in the inverter power supply mode powered by the main power supply branch and the first prohibition flag exists, the uninterruptible power supply stops performing self-tests on the rectifier module, inverter module, energy storage module, and bypass module. When the uninterruptible power supply (UPS) is operating in inverter power supply mode powered by the main power supply branch and the second power failure probability is greater than the second threshold, a second prohibition flag is generated. When the UPS is operating in inverter power supply mode powered by the main power supply branch and the second prohibition flag exists, the UPS is prohibited from entering the bypass priority power supply mode.

2. The uninterruptible power supply control method according to claim 1, characterized in that, The method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and a first prohibition flag is present, increasing the DC bus voltage of the uninterruptible power supply to a preset voltage, wherein the preset voltage is greater than the normal operating voltage of the DC bus.

3. The uninterruptible power supply control method according to claim 1, characterized in that, The method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and a second prohibition flag is present, causing the uninterruptible power supply to perform a self-test of the bypass prohibition module.

4. The uninterruptible power supply control method according to claim 1, characterized in that, The method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and the first power failure probability is greater than a third threshold, shutting down the rectifier module of the uninterruptible power supply and operating the uninterruptible power supply in an inverter power supply mode powered by the energy storage module, wherein the third threshold is greater than the first threshold.

5. The uninterruptible power supply control method according to claim 1, characterized in that, The method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch and the second power failure probability is greater than a fourth threshold, causing the uninterruptible power supply to stop tracking the bypass module, wherein the fourth threshold is greater than the second threshold.

6. The uninterruptible power supply control method according to claim 1, characterized in that, The method includes: obtaining a third power failure probability from the cloud platform according to a preset period. The third power failure probability is generated by the cloud platform in real time based on the historical data of the operation of the main power supply branch and the bypass power supply branch, combined with the current season, news reports, and weather data. The third power failure probability is the power failure probability of the bypass power supply branch when the main power supply branch fails. When the uninterruptible power supply is operating in inverter power supply mode powered by the main power supply branch, if the main power supply branch loses power and the third power failure probability is greater than the fifth threshold, the uninterruptible power supply is switched to inverter power supply mode powered by the energy storage module.

7. The uninterruptible power supply control method according to claim 6, characterized in that, The method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by the main power supply branch, and the main power supply branch fails and the third power failure probability is less than or equal to a fifth threshold, the uninterruptible power supply is made to operate in a bypass power supply mode.

8. The uninterruptible power supply control method according to claim 6, characterized in that, The method includes: when the uninterruptible power supply is operating in an inverter power supply mode powered by an energy storage module, if the second power failure probability is less than or equal to a sixth threshold, the uninterruptible power supply is switched to a bypass power supply mode. When the uninterruptible power supply is operating in bypass power supply mode, if the second power failure probability is greater than the sixth threshold, the uninterruptible power supply is switched to inverter power supply mode powered by the energy storage module.

9. An uninterruptible power supply, characterized in that, The uninterruptible power supply includes a memory and a processor. The memory stores a computer program that can be executed by the processor, and when the processor executes the computer program, it implements the steps of the uninterruptible power supply control method as described in any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the steps of the uninterruptible power supply control method as described in any one of claims 1-8.

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