UPS storage battery backup power supply time control method, system and device based on load feedback

Abstract

The invention relates to the field of urban rail transit, in particular to a UPS storage battery backup power supply time control method, system and device based on load feedback. The linkage control method comprises the following steps: when a mains supply power supply fault occurs, acquiring information of a load borne by a current UPS (Uninterrupted Power Supply) system; and performing time-sharing power supply on each system according to the load information in combination with the requirement of each system on the backup power supply time of the storage battery and the current electric quantity condition of the storage battery pack. According to the method, the limitation that time-sharing power supply is carried out on each power utilization system only according to the preset time traditionally is solved, the power supply reliability of the UPS system is improved, effective utilization of storage battery resources is realized, and a guarantee is provided for normal operation and emergency handling of each system under the condition of mains supply power supply failure. The method can be widely applied to the field of urban rail transit.

Description

Technical Field

[0001] This invention relates to the field of urban rail transit, and in particular to a UPS battery backup power supply time control method, system, and device based on load feedback. Background Technology

[0002] Urban rail transit is one of the preferred modes of transportation for people today, and ensuring the normal operation of the lines is of great significance for safeguarding people's lives and property. The stable operation of the electromechanical systems is a crucial prerequisite for the long-term safety and security of the lines, and the reliability of its power supply is paramount. To ensure uninterrupted power supply to all electromechanical systems, UPS systems are typically used to power critical system equipment. Under normal mains power conditions, the UPS system rectifies and inverts the mains power before supplying power to various systems, ensuring that the power quality meets the operational requirements of each system. In the event of a mains power failure, the UPS system switches to backup power mode, supplying power to various systems via batteries to ensure uninterrupted power supply. Due to considerations such as construction costs, integrated UPS power supply solutions have been adopted in many urban rail transit projects in recent years, where a single UPS system simultaneously supplies power to multiple electromechanical systems (such as communication, integrated monitoring, environmental and equipment monitoring, access control, etc.). Because different systems have different requirements for UPS battery backup power time, the traditional solution is to install a time-sharing power supply device in the UPS output distribution cabinet. The time-sharing power supply duration is preset according to specifications and standards. When the preset time-sharing power supply duration is reached, the backup power supply to the corresponding system is cut off. This solution does not consider the actual power load of the system and the remaining battery power when setting the backup power supply duration for each system. This can easily lead to insufficient backup power supply duration or wasted battery resources, posing certain risks to ensuring normal power supply to each system and handling emergency events. Summary of the Invention

[0003] To address the above problems, this invention, which relies solely on pre-setting the time-sharing power supply duration according to specifications and standards, provides a UPS battery backup power supply time control method, system, device, and storage medium based on load feedback. When a mains power failure occurs, the system acquires the load information currently being handled by the UPS system. Based on this load information, and considering the battery backup power supply time requirements of each system and the current battery charge level, time-sharing power supply is implemented for each system.

[0004] The specific implementation method of this solution is as follows:

[0005] A UPS battery backup power supply time control method based on load feedback includes:

[0006] In the event of a mains power failure, the system switches to backup power mode, records the start time of the backup power supply, and provides time-sharing power to each power system through the battery according to the preset time length.

[0007] Obtain the current load status of the UPS system;

[0008] Get the current remaining power of the UPS battery pack;

[0009] Obtain the backup power supply time requirements of each power system in the current load handled by the UPS system;

[0010] Based on the load of the UPS system, the backup power supply time requirements of each power system, and the remaining power of the current UPS battery pack, the time-sharing power supply duration of the battery to each power system is set.

[0011] When the backup time reaches the set time-sharing power supply duration, the backup power supply from the battery to the corresponding power application system is cut off.

[0012] Once the mains power supply is restored to normal, the system switches to normal power supply mode, restoring normal power supply to all electrical systems and resetting the battery time-sharing power supply duration to the preset duration value.

[0013] Furthermore, during the backup power supply process of the battery, the UPS system load data is periodically collected. If the load condition changes, the battery time-sharing power supply duration for each power system is reset based on the changed load condition, the start time of this backup power supply, the remaining power of the UPS battery pack, the requirements of each power system for the backup power supply time, the start time of this backup power supply, and the current time.

[0014] Furthermore, when the backup power supply time of the battery reaches the reset time-sharing power supply time, the backup power supply of the battery to the corresponding power application system is cut off.

[0015] Furthermore, resetting the battery time-sharing power supply duration to a preset duration value also includes: controlling the UPS output distribution cabinet to restore power supply to the power systems that were cut off in the backup power supply mode, and closing the output switch circuit in a preset sequence to avoid instantaneous current surges.

[0016] Correspondingly, the present invention provides a UPS battery backup power supply time control system based on load feedback, comprising:

[0017] The acquisition module is used to acquire information such as UPS system load status, UPS battery pack remaining power status, backup power supply time requirements of each power system, backup power supply start time, and current time, providing basic data for load change analysis and time-of-use power supply time calculation of each power system;

[0018] The backup power supply control module is used to perform comprehensive analysis and calculation based on information such as the UPS system load status, UPS battery pack remaining power status, the backup power supply time requirements of each power system, the start time of this backup power supply, and the current time obtained by the acquisition module. It sets the time-sharing power supply duration for each power system, and periodically acquires load changes during the backup power supply process via the battery. When load changes occur, it updates the time-sharing power supply duration for each power system based on the load changes. When the battery backup power supply time reaches the set or updated time-sharing power supply duration, it controls the UPS output distribution cabinet to cut off the backup power supply from the battery to the corresponding power system. After the mains power supply returns to normal, it controls the UPS output distribution cabinet to restore normal power supply to the power systems that were cut off in the backup power supply mode.

[0019] Furthermore, the system specifically includes: a backup power supply time control device, a UPS host, a battery pack, and a UPS output distribution cabinet; the UPS host is connected to the battery pack, the UPS host is connected to the UPS output distribution cabinet, and both the UPS host and the UPS output distribution cabinet are connected to the backup power supply time control device.

[0020] Furthermore, the backup power supply time control device is used to obtain the power supply mode and remaining battery power from the UPS host, obtain load information from the UPS output distribution cabinet, and control the UPS output distribution cabinet to perform power cut-off or restoration operations on the power consumption system; the UPS host is used to switch the power supply mode according to the mains power status, manage the battery pack and monitor its remaining power; the UPS output distribution cabinet is used to distribute power to each power consumption system and monitor the load data of each output circuit in real time.

[0021] Correspondingly, the present invention provides a UPS battery backup power supply time control device based on load feedback, including a memory and a processor; the memory is used to store programs and data, including acquired basic data and time-of-use power supply time length calculation results; the processor is used to execute the program to implement the method described above.

[0022] Correspondingly, embodiments of this application provide a non-transitory computer-readable storage medium, which stores a program and data, including acquired basic data and time-sharing power supply duration calculation results. The program is executed by a processor to implement the above-described method.

[0023] The present invention has the following beneficial effects:

[0024] When mains power fails and the system switches to backup power mode, it can comprehensively calculate the time-sharing power supply duration for each power system based on the current load on the UPS system, the remaining power of the UPS battery bank, and the backup power requirements of each power system within the current load. Based on the calculation results, it then provides time-sharing power supply to each power system via the battery. Simultaneously, during backup power supply via the battery, it can dynamically update the time-sharing power supply duration for each power system if there are changes in the load. When the battery backup power supply duration reaches the set or updated time-sharing power supply duration, it can automatically disconnect the battery backup power supply to that power system. Furthermore, upon returning to normal power supply mode, it can restore power to the power systems that were disconnected in backup power supply mode, and reset the battery time-sharing power supply duration for each power system to the preset value, awaiting the next backup power supply mode. Through the above processing, on the one hand, if the remaining battery power is low and cannot meet the backup power supply time requirements of all power systems, an alarm can be issued in a timely manner, and the backup power supply time of critical system equipment can be ensured to meet the relevant requirements by manually cutting off power to non-critical equipment, thereby improving power supply reliability. On the other hand, if the remaining battery power is relatively abundant, the backup power supply time of each power system can be extended, rather than simply cutting off power at a preset time, thereby improving the effective utilization of battery resources and providing more uninterrupted power supply time for emergency rescue and personnel evacuation in the event of a mains power failure (especially in the event of an emergency). Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a certain embodiment of a UPS battery backup power supply time control system based on load feedback.

[0026] Figure 2 This is a flowchart of one embodiment of a UPS battery backup power supply time control method based on load feedback.

[0027] Figure 3 This is a flowchart of another embodiment of the UPS battery backup power supply time control method based on load feedback.

[0028] Figure 4 This is a schematic diagram of another embodiment of a UPS battery backup power supply time control system based on load feedback.

[0029] Figure 5 This is a schematic diagram of a UPS battery backup power supply time control device based on load feedback. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] It should be noted that although the system diagram shows functional modules and the flowchart shows the logical order, in some cases, the steps shown or described may be executed in a different order than the module division in the system or the order in the flowchart.

[0032] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0033] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0034] 1)Reference Figure 1 , Figure 1 This is a schematic diagram of a UPS battery backup power supply time control system D10 based on load feedback, provided in some embodiments of the present invention. The UPS battery backup power supply time control system D10, hereinafter referred to as the backup power supply control system D10, includes: a backup power supply time control device D11, a UPS main unit D12, a battery pack D13, and a UPS output distribution cabinet D14. The UPS main unit D12 is connected to the battery pack D13, and the UPS main unit D12 is connected to the UPS output distribution cabinet D14. Both the UPS main unit D12 and the UPS output distribution cabinet D14 are connected to the backup power supply time control device D11.

[0035] The backup power supply time control device D11 has timing and time recording functions. It can also obtain information such as power supply mode and remaining power of battery pack D13 from the UPS host D12, and obtain load information from the UPS output distribution cabinet D14. It can also control the UPS output distribution cabinet D14 to perform operations such as disconnecting or restoring power to the corresponding power system. In addition, the backup power supply time control device D11 also has the function of presetting the backup power supply time of each power system through manual input (the preset value is generally determined according to the requirements of specifications, standards and other documents). When the UPS host D12 switches to backup power mode, the backup power time control device D11 obtains the information that the UPS system has entered backup power mode. It then obtains the remaining power data of the battery pack D13 from the UPS host D12, obtains the load data of each output switch circuit from the UPS output distribution cabinet D14, and performs comprehensive calculations based on the preset backup power time requirements of each power system through a fusion analysis algorithm. Then, based on the calculation results, it sets the time-sharing power supply duration of the battery to each power system and records the start time of this backup power supply. Simultaneously, during the backup power supply process via the battery pack D13 according to the aforementioned set time-sharing power supply duration, the backup power supply time control device D11 periodically obtains load information from the UPS output distribution cabinet D14. Once the load of the power system changes, it obtains the remaining power of the battery pack D13 from the UPS host D12 and the changed load data of each output switch circuit from the UPS output distribution cabinet D14. Combining this with preset backup power supply times for each power system, the start time of this backup power supply, and the current time, it recalculates using a fusion analysis algorithm. Based on the calculation results, it resets the battery's time-sharing power supply duration for each power system. When the battery's backup power supply duration reaches the set time-sharing power supply duration, the backup power supply time control device D11 sends a stop power supply command to the UPS output distribution cabinet D14, cutting off the battery's backup power supply to the corresponding power system. Furthermore, when the mains power supply is restored to normal, the UPS host D12 switches to the normal power supply mode. After the backup power supply time control device D11 obtains the information that the UPS system has been restored to the normal power supply mode, it sends a command to the UPS output distribution cabinet D14 to restore the normal power supply to each power system, restores the power supply to the power systems that were cut off in the backup power supply mode, and resets the time-sharing power supply duration of the battery to each power system to the preset time length value, waiting for the next backup power supply mode to arrive.

[0036] The UPS host D12 can automatically switch between normal power supply mode and backup power supply mode depending on whether the mains power supply is normal. Under normal mains power supply conditions, it operates in normal power supply mode, performing rectification and inversion operations on the mains power before supplying power to various electrical systems, ensuring that the power quality meets the operating requirements of each system's equipment. In the event of a mains power failure, it can automatically switch to backup power supply mode, supplying power to various electrical systems through the battery pack D13, ensuring uninterrupted power supply. Simultaneously, the UPS host D12 can also manage the battery pack D13, enabling real-time monitoring of its remaining power. The UPS host D12 can also output the aforementioned power supply mode and related monitoring data to the backup power supply time control device D11.

[0037] The battery pack D13 consists of several batteries and is used to supply power to various electrical systems in backup power mode to ensure the continuity of power supply.

[0038] The UPS output distribution cabinet D14 serves two main functions: firstly, it distributes the electrical energy transmitted from the UPS main unit D12 to various power systems through output switch circuits; secondly, it can cut off or restore power supply to relevant power systems according to instructions sent by the backup power supply time control device D11. Simultaneously, the UPS output distribution cabinet D14 can distinguish and identify the output switch circuits connected to each power system, and can monitor the load status of each output switch circuit in real time by monitoring output voltage, current, power, etc., and can also output relevant monitoring data to the backup power supply time control device D11.

[0039] It should be noted that the connection between the UPS main unit D12, the UPS output distribution cabinet D14, and the backup power supply time control device D11 can be wired or wireless. This application does not impose specific limitations on the connection method or the network standard.

[0040] It should be noted that the backup power supply time control device D11 obtains data from the UPS host D12 and UPS output distribution cabinet D14 in two ways: D11 periodically sends monitoring data acquisition requests to the UPS host D12 and UPS output distribution cabinet D14 through polling or other methods, and the UPS host D12 and UPS output distribution cabinet D14 respond to the requests by sending the relevant monitoring data to D11; or D11 actively and periodically sends the relevant monitoring data to D11. This application does not impose specific restrictions on the method or data acquisition period of the backup power supply time control device D11 obtaining data from the UPS host D12 and UPS output distribution cabinet D14.

[0041] It should be noted that the UPS host D12 can be a UPS host device of the type of line frequency machine, high frequency machine, etc. This application does not make specific restrictions on the type of UPS host.

[0042] It should be noted that the battery pack D13 can be composed of lead-acid batteries, lithium batteries, etc., and this application does not specifically limit the type of battery.

[0043] The backup power supply time control system D10 provided in some embodiments of the present invention can be applied to a UPS battery backup power supply time control method based on load feedback. When the mains power supply fails and switches to backup power supply mode, it can comprehensively calculate the time-sharing power supply duration for each power system based on the current load of the UPS system, the remaining power of the UPS battery pack D13, and the backup power supply time requirements of each power system under the current load of the UPS system. Based on the calculation results, it provides time-sharing power supply to each power system through the battery D13. Simultaneously, during the backup power supply process via the battery, the time-sharing power supply duration for each power system can be dynamically updated if the load of the power system changes. When the battery backup power supply duration reaches the set or updated time-sharing power supply duration, the battery backup power supply to that power system can be automatically cut off. Furthermore, upon restoration to normal power supply mode, the system can restore power to electrical systems that were disconnected from backup power supply mode. Simultaneously, the time-sharing power supply duration of the battery to each electrical system is reset to the preset value, awaiting the next backup power supply mode. Through this process, on the one hand, if the remaining charge of battery pack D13 is low and cannot meet the backup power supply time requirements of all electrical systems, an alarm can be issued promptly. This allows for manual disconnection of power to non-critical equipment, ensuring that the backup power supply time for critical system equipment meets relevant requirements and improving power supply reliability. On the other hand, if the remaining charge of battery pack D13 is abundant, the backup power supply duration of each electrical system can be extended, rather than simply disconnecting at a preset time. This improves the effective utilization of battery resources and provides more uninterrupted power supply time for emergency rescue and personnel evacuation during mains power failures (especially in the event of an emergency).

[0044] The following, in conjunction with the accompanying drawings, presents various specific embodiments of the UPS battery backup power supply time control method based on load feedback under the backup power supply time control system D10.

[0045] 2)Reference Figure 2 , Figure 2This is a flowchart of one embodiment of the UPS battery backup power supply time control method based on load feedback provided by some embodiments of the present invention. The UPS battery backup power supply time control method based on load feedback, hereinafter referred to as the backup power supply control method, includes, but is not limited to, steps D21, D22, D23, D24, D25, D26, and D27.

[0046] Step D21: A mains power supply failure occurs, and the system switches to backup power supply mode. The start time of this backup power supply is recorded, and the system supplies power to each electrical system in a time-sharing manner through the battery according to the preset time length value.

[0047] Specifically, based on the mains power input, the UPS host determines that a mains power supply failure has occurred and automatically switches the UPS system power supply mode from normal power supply mode to backup power supply mode. After receiving the backup power supply mode switching information, the backup power supply time control device records the start time of this backup power supply and provides time-sharing power supply to each power system through the battery according to the preset time length value.

[0048] In some embodiments, the preset time length value in the backup power supply time control device should be preset manually according to the requirements of specifications, standards, and other documents. This serves as the default value for the backup power supply time length of each power system and also represents the required backup power supply time for the battery in each power system. For example, according to the "Metro Design Code" (GB50157-2013), the backup power supply time is no less than 2 hours for communication systems, no less than 1 hour for integrated monitoring systems, and no less than 1 hour for environmental and equipment monitoring systems. If the backup power supply time length value of a power system is not manually preset, it will be processed according to the default value (e.g., 1 hour or 2 hours). It should be noted that if a power system is added or deleted in normal power supply mode or backup power supply mode, the preset backup power supply time should be adjusted synchronously for that power system; otherwise, it will be processed according to the default value. Simultaneously, the backup power supply time control device needs to record the start time of this backup power supply (e.g., T00) for use in subsequent steps.

[0049] Step D22: Obtain the current load status of the UPS system.

[0050] Specifically, the backup power supply time control device obtains the actual power load of each power system in the current load undertaken by the UPS system from the UPS output distribution cabinet, that is, the current load situation undertaken by the UPS system.

[0051] In some embodiments, the power systems connected to each output switch circuit in the UPS output distribution cabinet are manually configured according to actual conditions after the project is completed. For example, switch circuit 001 of phase A is connected to a communication system, and switch circuit 001 of phase B is connected to an integrated monitoring system. Simultaneously, the UPS output distribution cabinet monitors the load status of each output circuit in real time. For example, the real-time output power supply voltage of switch circuit 001 of phase A is cV, the real-time output current is dA, and the real-time output power is eKW. Therefore, the backup power supply time control device can obtain the specific power systems connected to each output switch circuit and the actual power load of each power system through the UPS output distribution cabinet.

[0052] Step D23: Obtain the current remaining power of the UPS battery pack.

[0053] Specifically, the backup power supply time control device obtains the current remaining power of the UPS battery pack from the UPS host. For example, the current remaining power of the UPS battery pack is fAh.

[0054] Step D24: Obtain the backup power supply time requirements of each power system in the current load borne by the UPS system.

[0055] Specifically, the backup power supply time control device obtains information from the UPS output distribution cabinet about which electrical systems are currently being used by the UPS system, and determines the backup power supply time requirements of each electrical system based on preset values.

[0056] In some embodiments, the backup power supply time control device determines the backup power supply time requirements of each power system for the battery based on the preset backup power supply time length value or the default value in step D21.

[0057] Step D25: Based on the load of the UPS system, the backup power supply time requirements of each power system, and the remaining power of the current UPS battery pack, set the time-sharing power supply duration of the battery to each power system.

[0058] Specifically, the backup power supply time control device performs comprehensive analysis and calculation based on the remaining power data of the UPS battery pack obtained from the UPS host, the specific power systems being used in the current UPS system load obtained from the UPS output distribution cabinet, the real-time load data of the output switch circuits corresponding to each power system, and the preset backup power supply time requirements of each power system. Then, based on the calculation results, it sets the time-sharing power supply time of the battery for each power system.

[0059] In some embodiments, for example, the remaining power of the UPS battery pack obtained from the UPS host is fAh, and the load undertaken by the UPS system obtained from the UPS output distribution cabinet specifically includes a communication system, an integrated monitoring system, and an environmental and equipment monitoring system. The corresponding output switch circuits are A phase 001 switch, B phase 001 switch, and C phase 001 switch, and the real-time output power of the switch circuits are xKW, yKW, and zKW, respectively. At the same time, the preset backup power supply time requirements for each power system are no less than 2 hours for the communication system, no less than 1 hour for the integrated monitoring system, and no less than 1 hour for the environmental and equipment monitoring system. The backup power supply time control device uses the remaining power (fAh) and the real-time power consumption (xKW, yKW, zKW) of each power system to determine whether the remaining power can simultaneously meet the backup power supply time requirements of no less than 2 hours for the communication system, no less than 1 hour for the integrated monitoring system, and no less than 1 hour for the environmental and equipment monitoring system. If it cannot meet the requirements, an alarm is issued, prompting staff to take further action (such as cutting off power to certain non-critical equipment). Simultaneously, the backup time of each system is adjusted according to calculation rules (such as proportionally shortening the backup power supply time of each power system), resulting in the calculated time-of-use power supply duration for each power system. The time-sharing power supply times are T11, T21, and T31. If it is determined that the remaining power can simultaneously meet the preset backup power supply time requirements of each power system, the backup power supply time of each system is optimized according to the calculation rules (such as proportionally extending the backup power supply time of each power system, or only cutting off part of the power system at the designated time, with the remaining power supplied to other power systems, etc.). The optimized time-sharing power supply time lengths of each power system are T12, T22, and T32, respectively. The backup power supply time control device sets the time-sharing power supply time length value of each power system according to the calculation results (T11, T21, T31) or (T12, T22, T32). It should be noted that the calculation rules for backup power supply time can be calculated in the most effective way by combining real-time monitoring data and on-site usage requirements. This invention does not impose specific restrictions on the specific calculation rules for backup power supply time.

[0060] Step D26: When the backup time reaches the set time-sharing power supply duration, disconnect the backup power supply of the battery to the corresponding power system.

[0061] Specifically, the backup power supply time control device controls the UPS output distribution cabinet to disconnect the corresponding output switch circuit at the designated time according to the time-sharing power supply duration of each power system set in step D25, so as to cut off the backup power supply to the corresponding power system.

[0062] In some instances, the backup power supply time control device, based on the backup power supply start time recorded in step D21 and the time-sharing power supply duration set for each power system in step D25, controls the UPS output distribution cabinet to disconnect the backup power supply to the corresponding power system at the designated time. For example, if the backup power supply start time is T00, and the time-sharing power supply durations for each power system are T12, T22, and T32, with corresponding output switch circuits A-phase 001, B-phase 001, and C-phase 001, then when the time reaches T00+T12, switch A-phase 001 is disconnected to disconnect the backup power supply to the communication system; when the time reaches T00+T22, switch B-phase 001 is disconnected to disconnect the backup power supply to the integrated monitoring system; and when the time reaches T00+T32, switch C-phase 001 is disconnected to disconnect the backup power supply to the environmental and equipment monitoring system.

[0063] Step D27: The mains power supply is restored to normal, and the system switches to normal power supply mode to restore normal power supply to each power system. The battery time-sharing power supply time is reset to the preset time length value.

[0064] Specifically, the UPS host determines that the mains power supply has been restored based on the mains input status and switches the power supply mode to normal power supply mode. After receiving the information that the normal power supply mode has been restored from the UPS host, the backup power supply time control device controls the UPS output distribution cabinet to reclose the corresponding output switch circuits of the power systems that were cut off in the backup power supply mode, so as to restore normal power supply to the corresponding power systems. At the same time, the backup power supply time control device resets the battery time-sharing power supply duration to the preset duration value, waiting for the next backup power supply mode to arrive.

[0065] In some instances, the backup power supply time control device should have a timing control function for the closing of output switches. After the normal power supply mode is restored, it should control the UPS output distribution cabinet to restore power to the disconnected power systems in chronological order to avoid instantaneous high current surges to the UPS system. Simultaneously, the automatic closing function of the backup power supply time control device should be manually selectable, allowing relevant personnel to choose between automatic or manual closing based on actual site requirements. If manual closing is selected, after the normal power supply mode is restored, relevant personnel must manually close the output switch circuits corresponding to the power systems disconnected in backup power supply mode to restore normal power supply to those systems.

[0066] Through steps D21, D22, D23, D24, D25, D26, and D27, when the mains power supply fails and the system switches to backup power mode, the system calculates the time-sharing power supply duration for each power system based on the current load on the UPS system, the remaining power of the UPS battery pack, and the backup power requirements of each power system within the current load. Then, based on the calculation results, the battery pack provides time-sharing power to each power system. When the battery backup power supply duration reaches the set time-sharing duration, the backup power supply from the battery pack to the corresponding power system is automatically cut off. Simultaneously, upon returning to normal power mode, power is restored to the power systems that were cut off in backup power mode, and the time-sharing power supply duration from the battery pack to each power system is reset to the preset value, awaiting the next backup power mode. Through the above processing, on the one hand, if the remaining power of the battery pack is low and cannot meet the backup power supply time requirements of all power systems, an alarm can be issued in a timely manner. By manually cutting off power to non-critical equipment, the backup power supply time of critical system equipment can be ensured to meet the relevant requirements, thereby improving power supply reliability. On the other hand, if the remaining power of the battery pack is relatively abundant, the backup power supply time of each power system can be extended, rather than simply cutting off power at a preset time. This improves the effective utilization of battery pack resources and provides more uninterrupted power supply time for emergency rescue and personnel evacuation in the event of a mains power failure (especially in the event of an emergency).

[0067] 3)Reference Figure 3 , Figure 3 This is a flowchart of another embodiment of the UPS battery backup power supply time control method based on load feedback provided by the present invention. The backup power supply control method includes, but is not limited to, steps D31, D32, D33, D34, D35, D36, and D37.

[0068] Step D31: Periodically obtain the load changes currently undertaken by the UPS system.

[0069] Specifically, in the backup power supply mode, after completing step D25 in some examples, the backup power supply time control device periodically obtains real-time power consumption data of each power system from the UPS output distribution cabinet and compares and analyzes it with the data obtained previously. If it is found that the load undertaken by the current UPS system has changed, the subsequent steps are executed.

[0070] In another embodiment, in backup power mode, staff may cut off the power supply to some non-critical equipment or add power to some equipment such as emergency rescue equipment as needed. This will cause changes in the load of the UPS system. The backup power time control device obtains real-time monitoring data of the output switch circuit of the UPS output distribution cabinet periodically to understand the specific situation of this change.

[0071] Step D32: Obtain the start time of this backup power supply.

[0072] Specifically, the backup power supply time control device determines the backup power supply start time based on the backup power supply start time recorded in step D21 in some examples.

[0073] Step D33: Obtain the current remaining power of the UPS battery pack. This step is consistent with the operation method of step D23 in some examples, and will not be repeated here.

[0074] Step D34: Obtain the backup power supply time requirements of each power system in the current load handled by the UPS system. This step is consistent with the operation method of step D24 in some examples, and will not be repeated here.

[0075] Step D35: Based on the load of the UPS system, the start time of the backup power supply, the requirements of each power system for the backup power supply time of the battery, the current power status of the UPS battery pack, and the current time, reset the time-sharing power supply duration of the battery to each power system.

[0076] Specifically, the backup power supply time control device performs comprehensive analysis and calculation based on the remaining power status of the UPS battery pack obtained from the UPS host, the specific power systems being used in the current UPS system load obtained from the UPS output distribution cabinet, the real-time load status of the output switch circuits corresponding to each power system, and other data such as the preset backup power supply time requirements of each power system, the start time of this backup power supply, and the current time. Then, based on the calculation results, it resets the time-sharing power supply time of the battery for each power system.

[0077] In some other instances, for example, the remaining power of the current UPS battery pack obtained from the UPS host is f’ Ah. Among the loads currently borne by the UPS system obtained from the UPS output power distribution cabinet, there are a communication system, an integrated monitoring system, and an environment and equipment monitoring system. The corresponding output switch circuits are the switch No. 001 in phase A, the switch No. 001 in phase B, and the switch No. 001 in phase C respectively. The real-time power consumption of the switch circuits are x’ KW, y’ KW, and z KW respectively, that is, the load situation has changed. The required values of the backup power supply time length for each power consumption system preset are that the communication system is not less than 2 hours, the integrated monitoring system is not less than 1 hour, and the environment and equipment monitoring system is not less than 1 hour. At the same time, the starting time of this backup power supply is T00, and the current time is TP. It can be known that TP - T00 is the time value for which the current battery pack has provided backup power supply to each power consumption system during this backup power supply cycle. At this time, it is necessary to conduct a classified discussion based on the comparison values between the backup power supply time values of each power consumption system set in step D25 in some instances and TP - T00. For generality, assume that the backup power supply time values of each power consumption system set in step D25 in some instances are T1, T2, and T3 respectively, where T1 = T11 or T12, T2 = T21 or T22, T3 = T31 or T32, and assume that T1 > T2 > T3. Then the following situations exist:

[0078] If (TP - T00) < T3, at this time, the backup power supply of all power consumption systems has not been cut off. The backup power supply time control device judges whether the remaining power can simultaneously meet the backup power supply time requirements that the communication system is not less than 2 - (TP - T00) hours, the integrated monitoring system is not less than 1 - (TP - T00) hours, and the environment and equipment monitoring system is not less than 1 - (TP - T00) hours, based on the remaining power f’ Ah and the real-time power consumption situations x’ KW, y’ KW, and z KW of each power consumption system. If it cannot be met, an alarm is issued to prompt the staff to make further processing (such as cutting off the power supply of some non-critical devices, etc.). At the same time, the backup time of each system is calculated according to the calculation rule (such as shortening the backup power supply time of each power consumption system in equal proportion), and the calculated time lengths of the time-sharing power supply for each power consumption system are T13, T23, and T33. If it is judged that the remaining power can simultaneously meet the backup power supply time requirements that the communication system is not less than 2 - (TP - T00) hours, the integrated monitoring system is not less than 1 - (TP - T00) hours, and the environment and equipment monitoring system is not less than 1 - (TP - T00) hours, then the backup power supply time of each system is optimized according to the calculation rule (such as extending the backup power supply time of each power consumption system in equal proportion, or only cutting off some power consumption systems at the time point, and using the remaining power for other power consumption systems, etc.), and the optimized time lengths of the time-sharing power supply for each power consumption system are T14, T24, and T34;

[0079] If T3 < (TP - T00) < T2, at this time the environmental and equipment monitoring system has been cut off from the backup power supply. The backup power supply time control device judges whether the remaining power can simultaneously meet the backup power supply time requirements of the communication system not less than 2 - (TP - T00) hours and the integrated monitoring system not less than 1 - (TP - T00) hours through the remaining power f’Ah and the real-time power consumption conditions x’KW, y’KW of each power consumption system. If it cannot be met, an alarm is issued to prompt the staff to make further processing (such as cutting off the power supply of some non-critical devices, etc.). At the same time, the backup time of each system is calculated according to the calculation rules (such as shortening the backup power supply time of each power consumption system in equal proportion), and the calculated time lengths of the time-sharing power supply of each power consumption system are T15 and T25. If it is judged that the remaining power can simultaneously meet the backup power supply time requirements of the communication system not less than 2 - (TP - T00) hours and the integrated monitoring system not less than 1 - (TP - T00) hours, the backup power supply time of each system is optimized according to the calculation rules (such as extending the backup power supply time of each power consumption system in equal proportion, or only cutting off some power consumption systems at the appointed time, and using the remaining power for other power consumption systems, etc.), and the optimized time lengths of the time-sharing power supply of each power consumption system are T16 and T26.

[0080] If T2 < (TP - T00) < T1, at this time both the integrated monitoring system and the environmental and equipment monitoring system have been cut off from the backup power supply. The backup power supply time control device judges whether the remaining power can meet the backup power supply time requirements of the communication system not less than 2 - (TP - T00) hours through the remaining power f’Ah and the real-time power consumption condition x’KW of the power consumption system. If it cannot be met, an alarm is issued to prompt the staff to make further processing (such as cutting off the power supply of some non-critical devices, etc.). At the same time, the backup time of the communication system is calculated according to the calculation rules (such as shortening the backup power supply time of the communication system), and the calculated time length of the time-sharing power supply of the communication system is T17. If it is judged that the remaining power can meet the backup power supply time requirements of the communication system not less than 2 - (TP - T00) hours, the backup power supply time of the communication system is optimized according to the calculation rules (such as extending the backup power supply time of the communication system), and the optimized time length of the time-sharing power supply of the communication system is T18. It should be noted that the purpose of calculating T17 and T18 here is to prevent the battery pack from running out of power and avoid damaging the battery pack due to deep discharge while meeting the backup time requirements. Of course, it can also be set to the battery depletion mode according to the actual on-site requirements, that is, when there is only one power consumption system left, the backup power supply time is no longer dynamically adjusted, and the backup power supply operation of cutting off the power consumption system at the appointed time is not performed until the battery pack runs out of power.

[0081] If T1 < (TP - T00), at this time all power consumption systems have been cut off from the backup power supply, and the backup power supply time is no longer dynamically adjusted.

[0082] It should be noted that among the above situations, there are also two possible scenarios: [2-(TP-T00)]>0>[1-(TP-T00)] and [2-(TP-T00)]<0. [2-(TP-T00)]>0>[1-(TP-T00)] indicates that from the start time of this backup power supply to the current time, the backup power supply time requirements of the integrated monitoring system and the environmental and equipment monitoring system have been met, but the backup power supply time requirements of the communication system have not yet been met. In this case, the backup power supply of the integrated monitoring system and the environmental and equipment monitoring system can be cut off according to the calculation rules, or these two systems can continue to participate in subsequent backup power supply time optimization calculations. [2-(TP-T00)]<0 indicates that from the start time of this backup power supply to the current time, the backup power supply time requirements of the integrated monitoring system, the environmental and equipment monitoring system, and the communication system have been met. In this case, the backup power supply of some power-consuming systems can be cut off according to the calculation rules, or all systems can continue to participate in subsequent backup power supply time optimization calculations. Since the classification and discussion of the above situations are quite complex, and this invention does not impose specific restrictions on the calculation rules for backup power supply time, the calculation rules for backup power supply time can be calculated in the most effective way by combining real-time monitoring data and on-site usage requirements, and will not be discussed in detail here.

[0083] Based on the above calculation results, i.e., (T13, T23, T33) or (T14, T24, T34), (T15, T25) or (T16, T27), T17 or T18, the backup power supply time control device resets the time-sharing power supply duration value for each power system. Simultaneously, the backup power supply time control device continues to periodically acquire information on the current load changes of the UPS system. If the load changes, it continues with steps D31 to D35; if the load does not change, it proceeds to step D36.

[0084] Step D36: When the backup time reaches the reset time-sharing power supply duration, disconnect the backup power supply of the battery to the corresponding power system.

[0085] Specifically, the backup power supply time control device controls the UPS output distribution cabinet to disconnect the corresponding output switch circuit at the designated time to cut off the backup power supply to the corresponding power system, based on the time-sharing power supply duration of each power system reset in step D35.

[0086] In other instances, the backup power supply time control device, based on the backup power supply start time recorded in step D21 of some embodiments and the time-sharing power supply duration set in step D35 for each power system, controls the UPS output distribution cabinet to disconnect the backup power supply to the corresponding power system at the specified time. For example, if the backup power supply start time is T00, and the reset time-sharing power supply durations are T14, T24, and T34, with corresponding output switch circuits A phase 001, B phase 001, and C phase 001, then when the time reaches T00+T14, switch A phase 001 is disconnected to disconnect the backup power supply to the communication system; when the time reaches T00+T24, switch B phase 001 is disconnected to disconnect the backup power supply to the integrated monitoring system; and when the time reaches T00+T34, switch C phase 001 is disconnected to disconnect the backup power supply to the environmental and equipment monitoring system.

[0087] Step D37: The mains power supply is restored to normal, switching to normal power supply mode, restoring normal power supply to each electrical system, and resetting the battery time-of-use power supply time to the preset time. This step is consistent with the operation method of step D27 in some examples, and will not be described again here.

[0088] Through steps D31, D32, D33, D34, D35, D36, and D37, when the mains power supply fails, the system switches to backup power mode. Based on the current load on the UPS system, the remaining charge of the UPS battery bank, and the backup power requirements of each electrical system under the current load, the system calculates the time-sharing power supply duration for each electrical system. Then, based on the calculation results, the system provides time-sharing power to each electrical system via the battery. During the backup power supply process, the system dynamically updates its time-sharing power supply duration when the load of the electrical system changes. When the battery backup power supply duration reaches the reset time-sharing power supply duration, the backup power supply to the corresponding electrical system is automatically cut off. Simultaneously, upon returning to normal power mode, the electrical systems that were cut off from backup power supply are restored, and the battery time-sharing power supply duration for each electrical system is reset to the preset value, awaiting the next backup power supply mode. Through the above processing, on the one hand, if the remaining battery power is low and cannot meet the backup power supply time requirements of all power systems, an alarm can be issued in a timely manner, and the backup power supply time of critical system equipment can be ensured to meet the relevant requirements by manually cutting off power to non-critical equipment, thereby improving power supply reliability. On the other hand, if the remaining battery power is relatively abundant, the backup power supply time of each power system can be extended, rather than simply cutting off power at a preset time, thereby improving the effective utilization of battery resources and providing more uninterrupted power supply time for emergency rescue and personnel evacuation in the event of a mains power failure (especially in the event of an emergency).

[0089] 4)Reference Figure 4 , Figure 4This is a schematic diagram of another embodiment of the UPS battery backup power supply time control system D40 based on load feedback provided by some other embodiments of the present invention, including: an acquisition module D41, used to acquire information such as UPS system load status, UPS battery pack remaining power status, each power system's requirement for battery backup power supply time, the start time of this backup power supply, and the current time, providing basic data for analyzing load changes and calculating the time-sharing power supply time of each power system; and a backup power supply control module D42, used to control the UPS system based on the UPS system load status, UPS battery pack remaining power status, and each power system's requirement for battery backup power supply time obtained by the acquisition module. The system comprehensively analyzes and calculates information such as backup power supply time requirements, the start time of this backup power supply, and the current time to set or update the time-sharing power supply duration for each power system. During the backup power supply process via battery, it periodically acquires load change information and updates the time-sharing power supply duration for each power system based on load changes. When the battery backup power supply time reaches the set time-sharing power supply duration, it controls the UPS output distribution cabinet to cut off the backup power supply from the battery to the corresponding power system. After the mains power supply returns to normal, it controls the UPS output distribution cabinet to restore normal power supply to the power systems that were cut off in the backup power supply mode.

[0090] Depend on Figure 1 and Figure 4 It is understood that the backup power supply time control device D10 can be a standalone hardware device containing software, or standalone software, or hardware integrated with other hardware devices, or software integrated with other software platforms. This invention does not impose specific limitations on the form of the backup power supply time control device D10.

[0091] When the mains power supply fails and the system switches to backup power mode, the backup power control module D42 obtains the current load status of the UPS system, the remaining power of the UPS battery bank D13, and the backup power requirements of each electrical system within the current load of the UPS system through the acquisition module D41. It then calculates the time-sharing power supply duration for each electrical system and provides time-sharing power supply through the battery bank based on the calculation results. Furthermore, during the backup power supply process via the battery bank, the backup power control module D42 periodically acquires and analyzes load information through the acquisition module D41. If a change in the load of an electrical system occurs, the backup power control module D42 dynamically updates the time-sharing power supply duration for each electrical system. When the battery backup power supply duration reaches the set or updated time-sharing power supply duration, the backup power control module D42 controls the UPS output distribution cabinet to automatically disconnect the battery bank's backup power supply to that electrical system. Simultaneously, upon restoration to normal power supply mode, the backup power control module D42 controls the UPS output distribution cabinet to restore power to the electrical systems that were disconnected during backup power supply mode, and resets the time-sharing power supply duration of the battery pack to the preset value, awaiting the next backup power supply mode. Through this process, on the one hand, if the remaining battery charge is low and cannot meet the backup power time requirements of all electrical systems, an alarm can be issued promptly, and the backup power supply time of critical system equipment can be ensured to meet relevant requirements by manually cutting off power to non-critical equipment, thus improving power supply reliability. On the other hand, if the remaining battery charge is abundant, the backup power supply duration of each electrical system can be extended, rather than simply cutting off power at the preset time, improving the effective utilization of battery resources and providing more uninterrupted power supply time for emergency rescue and personnel evacuation during mains power failures (especially in the event of an emergency).

[0092] 5) such as Figure 5 As shown, Figure 5 This is a schematic diagram of the UPS battery backup power supply time control device D50 based on load feedback; it includes: one or more processors D51 and a memory D52. Figure 5 The example uses a processor D51 and a memory D52.

[0093] The processor D51 and memory D52 can be connected via a bus or other means. Figure 5 Taking the example of a connection between China and Israel via a bus.

[0094] Memory D52, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory D52 may include high-speed random access memory D52, and may also include non-transitory memory D52, such as at least one disk storage device D52, flash memory device, or other non-transitory solid-state memory D52. In some embodiments, memory D52 may optionally include memory D52 remotely located relative to processor D51, and these remote memories D52 can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, wireless communication networks, and combinations thereof.

[0095] Another embodiment of this application provides a backup power supply time control device D50, which can be used to execute the backup power supply time control method in any of the above embodiments, for example, to execute the method described above. Figure 2 The method steps are D21, D22, D23, D24, D25, D26, and D27.

[0096] When the mains power supply fails and the system switches to backup power mode, the backup power time control device D50 obtains the current load status of the UPS system through the UPS output distribution cabinet and the remaining power of the UPS battery pack through the UPS host. It determines the backup power time requirements of each electrical system under the current load through preset or default values, calculates the time-sharing power supply duration for each electrical system, and controls the UPS output distribution cabinet to provide time-sharing power to each electrical system through the battery pack based on the calculation results. Furthermore, during the backup power supply process using the battery pack, the backup power time control device D50 periodically obtains and analyzes load information from the UPS output distribution cabinet. If a change in the load of an electrical system occurs, the backup power time control device D50 dynamically updates the time-sharing power supply duration for each electrical system. When the battery backup power supply duration reaches the set or updated time-sharing power supply duration, the backup power time control device D50 controls the UPS output distribution cabinet to automatically disconnect the backup power supply from the battery pack to the corresponding electrical system. Simultaneously, upon restoration to normal power supply mode, the backup power supply time control device D50 controls the UPS output distribution cabinet to restore power to the power systems that were disconnected during backup power supply mode, and resets the time-sharing power supply duration of the battery pack to the preset time value, awaiting the next backup power supply mode. Through this process, on the one hand, if the remaining battery charge is low and cannot meet the backup power supply time requirements of all power systems, a timely alarm can be issued, and the backup power supply time of critical system equipment can be ensured to meet relevant requirements by manually cutting off power to non-critical equipment, thus improving power supply reliability. On the other hand, if the remaining battery charge is abundant, the backup power supply duration of each power system can be extended, rather than simply cutting off power at the preset time, improving the effective utilization of battery resources and providing more uninterrupted power supply time for emergency rescue and personnel evacuation during mains power failures (especially in the event of an emergency).

[0097] The backup power supply time control device D50 embodiment described above is merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0098] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0099] The above describes the embodiments of this application in detail, but this application is not limited to the above-described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A method for controlling the backup power supply time of a UPS battery based on load feedback, characterized in that, include: In the event of a mains power failure, the system switches to backup power mode, records the start time of the backup power supply, and provides time-sharing power to each power system through the battery according to the preset time length. Obtain the current load status of the UPS system; Get the current remaining power of the UPS battery pack; Obtain the backup power supply time requirements of each power system in the current load handled by the UPS system; Based on the load of the UPS system, the backup power supply time requirements of each power system, and the remaining power of the current UPS battery pack, the time-sharing power supply duration of the battery to each power system is set. When the backup time reaches the set time-sharing power supply duration, the backup power supply from the battery to the corresponding power application system is cut off. Once the mains power supply is restored to normal, the system switches to normal power supply mode, restoring normal power supply to all electrical systems and resetting the battery time-sharing power supply duration to the preset duration value.

2. The UPS battery backup power supply time control method based on load feedback according to claim 1, characterized in that, During the process of providing backup power from the battery, the UPS system load data is collected periodically. If the load condition changes, the battery time-sharing power supply duration for each power system is reset based on the changed load condition, the remaining power of the UPS battery pack, the requirements of each power system for the backup power supply time, the start time of this backup power supply, and the current time.

3. The UPS battery backup power supply time control method based on load feedback according to claim 2, characterized in that, When the backup power supply time of the battery reaches the reset time-sharing power supply time, the backup power supply of the battery to the corresponding power application system is cut off.

4. The UPS battery backup power supply time control method based on load feedback according to claim 1, characterized in that, The battery time-sharing power supply duration is reset to a preset duration value, and also includes: controlling the UPS output distribution cabinet to restore power supply to the power systems that were cut off in the backup power supply mode, and closing the output switch circuit in a preset sequence to avoid instantaneous current surges.

5. A UPS battery backup power supply time control system based on load feedback, characterized in that, include: The acquisition module is used to acquire information such as UPS system load status, UPS battery pack remaining power status, backup power supply time requirements of each power system, backup power supply start time, and current time, providing basic data for calculating the time-sharing power supply time of each power system. The backup power supply control module is used to perform comprehensive analysis and calculation based on the UPS system load status, UPS battery pack remaining power status, and the backup power supply time requirements of each power system obtained by the acquisition module. It sets the time-sharing power supply duration for each power system, and periodically acquires load changes during the backup power supply process via battery. When load changes occur, it updates the time-sharing power supply duration for each power system based on the load changes. When the battery backup power supply time reaches the set or updated time-sharing power supply duration, it controls the UPS output distribution cabinet to cut off the battery backup power supply to that power system. After the mains power supply is restored to normal, it controls the UPS output distribution cabinet to restore normal power supply to the power system that was cut off in the backup power supply mode.

6. The UPS battery backup power supply time control system based on load feedback according to claim 5, characterized in that, The system specifically includes: a backup power supply time control device, a UPS main unit, a battery bank, and a UPS output distribution cabinet; The UPS host is connected to the battery pack, the UPS host is connected to the UPS output distribution cabinet, and both the UPS host and the UPS output distribution cabinet are connected to the backup power supply time control device.

7. The UPS battery backup power supply time control system based on load feedback according to claim 6, characterized in that, The backup power supply time control device is used to obtain the power supply mode and remaining battery power from the UPS host, obtain load information from the UPS output distribution cabinet, and control the UPS output distribution cabinet to perform power cut-off or restoration operations on the power system. The UPS host is used to switch power supply modes according to the mains power status, manage the battery pack and monitor its remaining power. The UPS output distribution cabinet is used to distribute power to various power systems and monitor the load data of each output circuit in real time.

8. A UPS battery backup power supply time control device based on load feedback, characterized in that, Including memory and processor; The memory is used to store programs and data, including the acquired basic data and the calculation results of the time-sharing power supply duration; The processor is used to execute the program to implement the method as described in any one of claims 1 to 4.

9. A non-transitory computer-readable storage medium storing computer programs and data thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 4.

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