Emergency power supply starting control method, emergency power supply system and storage medium

Abstract

The application discloses an emergency power supply starting control method and an emergency power supply system and a storage medium, and comprises the following steps: obtaining current auxiliary energy storage information, deriving a supportable power supply time value according to the current auxiliary energy storage information and load power consumption, estimating a maximum pre-charging time value of a pre-charging step according to the supportable power supply time value, deriving a minimum pre-charging current value according to the maximum pre-charging time value, obtaining operation state information of a main energy storage module, judging a safe pre-charging current value according to the operation state information, when the minimum pre-charging current value is less than the safe pre-charging current value and the voltage of an energy storage bus reaches a closing target voltage, controlling a switch closing assembly to switch from a disconnected state to a closed state, and the auxiliary energy storage module stops executing a pre-energy supply step, and the energy storage bus supplies power to the load, and when the minimum pre-charging current value is greater than the safe pre-charging current value, output power regulation information is used to instruct to reduce the load power consumption, the application estimates pre-charging risks, and guarantees power supply continuity and power consumption safety.

Description

Technical Field

[0001] This invention relates to the field of emergency power supply technology, and in particular to an emergency power supply start-up control method, an emergency power supply system, and a storage medium. Background Technology

[0002] In power supply systems, critical loads such as communication base stations, industrial automation equipment, data centers, and precision medical instruments have extremely high requirements for the continuity, stability, and security of power supply. When the mains power supply bus experiences faults such as power outages, abnormal voltage, or excessive fluctuations, it can easily cause significant losses such as equipment shutdowns, data loss, production interruptions, and even equipment burnout. Therefore, emergency power supply systems, as backup power supply equipment for critical loads, are widely used in various power scenarios. They can quickly switch to power supply status after a mains power failure, continuously supplying power to the loads and mitigating various safety and economic risks caused by power outages.

[0003] The main energy storage module stores a large amount of electricity. To avoid excessive inrush current when the main energy storage module is directly connected to the energy storage bus, the main energy storage module usually needs to precharge the energy storage bus through a precharge module consisting of a precharge resistor, a current limiting circuit, or a DC / DC converter circuit. After the voltage of the energy storage bus reaches the set closing target voltage, the switching component is closed, allowing the main energy storage module to officially supply power to the load through the energy storage bus. During the precharge process, in order to prevent the critical load from losing power, an auxiliary energy storage module is needed to maintain basic power supply to the load.

[0004] However, in the above process, the pre-charging time is often uncertain due to problems such as low SOC, low temperature, and high internal resistance of the main energy storage module itself. The energy stored in the auxiliary energy storage module is limited. If the energy stored in the energy storage module is consumed by the load before the pre-charging step is completed, it will lead to the risk of power outage of the critical load. Summary of the Invention

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an emergency power supply start-up control method, an emergency power supply system, and a storage medium, which can anticipate pre-charging risks in advance and ensure power supply continuity and electrical safety.

[0006] An emergency power supply start-up control method according to a first aspect of the present invention is applied to an emergency power supply system. The emergency power supply system includes a main energy storage module, an energy storage bus, a switch assembly, an auxiliary energy storage module, and a monitoring module. The main energy storage module is connected to the energy storage bus via the switch assembly. The energy storage bus is used to supply electrical energy to the load. The auxiliary energy storage module can supply power to the load. The monitoring module is connected to the main energy storage module, the auxiliary energy storage module, and the switch assembly. The emergency power supply start-up control method includes: acquiring the power supply status of the power supply bus; when the power supply status meets the fault conditions, controlling the main energy storage module to perform a pre-charging step for the energy storage bus, in which the switch assembly is in an open state, and controlling the auxiliary energy storage module to perform a pre-supply step to supply power to the load; acquiring the current auxiliary energy storage information of the auxiliary energy storage module, and based on the current auxiliary energy storage information and the load power consumption... The system calculates the available power supply time of the auxiliary energy storage module; estimates the maximum pre-charge time based on the available power supply time; calculates the minimum pre-charge current required by the main energy storage module to charge the energy storage bus based on the maximum pre-charge time; acquires the operating status information of the main energy storage module and determines the currently allowed safe pre-charge current value based on the operating status information; when the minimum pre-charge current value is less than the safe pre-charge current value, the system continues to execute the pre-charge and pre-power supply steps; when the voltage of the energy storage bus reaches the closing target voltage, the system controls the switch assembly to switch from the open state to the closed state, controls the auxiliary energy storage module to stop executing the pre-power supply step, and the energy storage bus supplies power to the load; when the minimum pre-charge current value is greater than the safe pre-charge current value, the system continues to execute the pre-charge and pre-power supply steps, and outputs power regulation information to indicate a reduction in load power consumption.

[0007] The emergency power supply start-up control method according to embodiments of the present invention has at least the following beneficial effects: This invention discloses an emergency power supply start-up control method. When a fault occurs on the power supply bus supplying power to the load, the emergency power system intervenes to supply power. The main energy storage module performs a pre-charging step for the energy storage bus through the pre-charging module. At this time, the switch assembly is in the open state. Simultaneously, the auxiliary energy storage module is controlled to perform a pre-supply step to supply power to the load. During this process, based on the current auxiliary energy storage information of the auxiliary energy storage module and the power consumption of the load, the minimum pre-charging current value that the main energy storage module needs to maintain before the energy stored in the auxiliary energy storage module is exhausted is analyzed to complete the pre-charging step of the energy storage bus. According to the actual situation of the main energy storage module, when the minimum pre-charging current value is less than the safe pre-charging value... The minimum precharge current value indicates that the main energy storage module can maintain this minimum precharge current value. After completing the precharge step of the energy storage bus, the control switch component switches from the open state to the closed state, controls the auxiliary energy storage module to stop performing the pre-power supply step, and the energy storage bus can supply power to the load. When the minimum precharge current value is greater than the safe precharge current value, it indicates that the main energy storage module cannot maintain the minimum precharge current value under safe conditions. At this time, power regulation information needs to be output to indicate the reduction of load power consumption, thereby extending the maximum precharge time value for the auxiliary energy storage module to continuously supply power to the load. This application anticipates the precharge risk in advance to ensure power supply continuity and power safety.

[0008] According to some embodiments of the present invention, the step of determining the power supply time value that the auxiliary energy storage module can support based on the current auxiliary energy storage information and the load power consumption includes: determining the current energy storage value based on the current auxiliary energy storage information. The allowable energy supply value is calculated using the current energy storage value and the reserved safe energy value of the auxiliary energy storage module. The reserved safe energy value is... , To allow for a safety margin, the permitted energy supply value is... The auxiliary energy storage module's supported power supply time is determined based on the allowable energy supply value and the load power consumption. ,in, This represents the power consumption of the load. This represents the power consumption value of the power supply line.

[0009] According to some embodiments of the present invention, the current auxiliary energy storage information includes the current auxiliary energy storage voltage value. and the equivalent capacitance value of the auxiliary energy storage module The current energy storage value is obtained based on the current auxiliary energy storage information. Includes: ; in, To assist the minimum allowable discharge voltage value of the energy storage module, To improve the energy conversion efficiency of the auxiliary energy storage module; Alternatively, the current auxiliary energy storage information may include the current state of charge of the battery pack in the auxiliary energy storage module. The current energy storage value is obtained based on the current auxiliary energy storage information. Includes: ; in, To support the energy storage capacity of the battery pack in the auxiliary energy storage module, To support the minimum allowable state of charge of the battery pack in the energy storage module, To measure the average voltage of the battery pack in the auxiliary energy storage module within its usable discharge range, To improve the energy conversion efficiency of the auxiliary energy storage module.

[0010] According to some embodiments of the present invention, the step of estimating the maximum precharge time value of the precharge step based on the supportable power supply time value includes: ; in, This is the maximum precharge time value. This refers to the operating time value of the switchgear assembly. This is a safety margin time value.

[0011] According to some embodiments of the present invention, the minimum precharge current value required by the main energy storage module to charge the energy storage bus based on the maximum precharge time value includes: ; in, This is the equivalent capacitance of the energy storage bus. The target voltage value for closing the circuit breaker; This represents the initial residual voltage value of the energy storage bus.

[0012] According to some embodiments of the present invention, the operating status information includes the battery pack specifications of the main energy storage module, the current temperature value, and the current state of charge value of the main energy storage module; the step of determining the currently permissible safe pre-charge current value of the main energy storage module based on the operating status information includes: determining the permissible first maximum discharge current value based on the battery pack specifications. Based on the current temperature value and its relationship with the discharge current curve, the second maximum allowable discharge current value for the main energy storage module at the current temperature is determined. Based on the current temperature and current state of charge, derive the ideal open-circuit voltage for the current temperature and current state of charge. Then, calculate the third maximum discharge current based on the ideal open-circuit voltage. ; at the first maximum discharge current value Second maximum discharge current value and the third maximum discharge current value Choose the minimum value as the safe precharge current value.

[0013] According to some embodiments of the present invention, the output power regulation information for indicating a reduction in load power consumption includes: determining the safe pre-charge time based on the safe pre-charge current value; determining the maximum load power consumption allowed to be supported by the auxiliary energy storage module under the current energy conditions based on the safe pre-charge time; outputting the maximum load power consumption to the load controller, and the load controller reducing the load power consumption of the load to be lower than the maximum load power consumption.

[0014] According to some embodiments of the present invention, the time required for the safe pre-charge ,in, The safe pre-charge current value; then the maximum load power consumption is .

[0015] An emergency power supply system according to a second aspect of the present invention is used to execute the emergency power supply start-up control method disclosed in any of the above embodiments.

[0016] According to a third aspect of the present invention, a computer-readable storage medium stores a computer program, characterized in that, when the computer program is executed by a processor, it implements the emergency power supply start-up control method disclosed in any of the above embodiments.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the emergency power supply system of the present invention, according to one embodiment. Figure 2 This is a flowchart of one embodiment of the emergency power supply start-up control method of the present invention.

[0019] Figure label: Main energy storage module 110; energy storage bus 120; switchgear assembly 130; precharge module 140; auxiliary energy storage module 150; monitoring module 160; load 170. Detailed Implementation

[0020] 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.

[0021] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0022] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding" are understood to exclude the number itself, and "above", "below", "within" are understood to include the number itself.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0024] like Figure 1 As shown, the emergency power supply start-up control method according to an embodiment of the present invention is applied to an emergency power supply system. The emergency power supply system includes a main energy storage module 110, an energy storage bus 120, a switch assembly 130, an auxiliary energy storage module 150, and a monitoring module 160. The main energy storage module 110 is connected to the energy storage bus 120 through the switch assembly 130. The energy storage bus 120 is used to supply electrical energy to the load 170. The auxiliary energy storage module 150 can supply power to the load 170. The monitoring module 160 is connected to the main energy storage module 110, the auxiliary energy storage module 150, and the switch assembly 130, respectively. Figure 2 As shown, the emergency power supply start-up control method includes: S210. Obtain the power supply status of the power supply bus. When the power supply status meets the fault conditions, control the main energy storage module 110 to perform a pre-charging step for the energy storage bus 120. In the pre-charging step, the switch assembly 130 is in the open state, and control the auxiliary energy storage module 150 to perform a pre-power supply step to supply power to the load 170. S220: Obtain the current auxiliary energy storage information of the auxiliary energy storage module 150, and determine the power supply time that the auxiliary energy storage module 150 can support based on the current auxiliary energy storage information and the power consumption of the load 170. S230. Estimate the maximum pre-charge time value of the pre-charge step based on the available power supply time value; S240. Calculate the minimum pre-charge current value that the main energy storage module 110 needs to charge the energy storage bus 120 based on the maximum pre-charge time value. S250: Obtain the operating status information of the main energy storage module 110, and determine the current allowed safe pre-charge current value of the main energy storage module 110 based on the operating status information; S260. When the minimum pre-charge current value is less than the safe pre-charge current value, the pre-charge step and the pre-power supply step are maintained. When the voltage of the energy storage bus 120 reaches the closing target voltage, the control switch assembly 130 is switched from the open state to the closed state, the auxiliary energy storage module 150 is stopped from performing the pre-power supply step, and the energy storage bus 120 supplies power to the load 170. S270: When the minimum precharge current value is greater than the safe precharge current value, continue to perform the precharge step and pre-power supply step, and output power regulation information to indicate the reduction of the power consumption of load 170.

[0025] The monitoring module 160 can be a central processing computer composed of a CPU and its auxiliary circuits. The monitoring module 160 also includes sampling units corresponding to the main energy storage module 110, auxiliary energy storage module 150, power supply bus, energy storage bus 120 and other components, for detecting voltage, current, energy storage and other states. The specific sampling units can be composed of relevant sampling circuits and components in the prior art, which will not be described in detail here.

[0026] It is understandable that the power supply bus can be the bus that transmits electrical energy from the mains power to the load 170. When the mains voltage, current, etc. fluctuate significantly and exceed the fluctuation threshold, the fault condition can be met. The monitoring module 160 controls the main energy storage module 110 to perform a pre-charging step for the energy storage bus 120, and controls the auxiliary energy storage module 150 to perform a pre-supply step to supply power to the load 170. At the same time, the power supply bus is controlled to be bypassed for maintenance.

[0027] The main energy storage module 110 can perform a pre-charging step on the energy storage bus 120 through a pre-charging module 140 composed of a pre-charging resistor, a current limiting circuit, or a DC / DC conversion circuit. Specifically, the specific structure of the pre-charging module 140 is a conventional technology and will not be described in detail here.

[0028] In this invention's emergency power supply start-up control method, when a fault occurs in the power supply bus supplying power to load 170, the emergency power system intervenes to supply power. The main energy storage module 110 performs a pre-charging step for the energy storage bus 120 through the pre-charging module 140. At this time, the switch assembly 130 is in an open state. Simultaneously, the auxiliary energy storage module 150 is controlled to perform a pre-supply step to supply power to load 170. During this process, based on the current auxiliary energy storage information of the auxiliary energy storage module 150 and the power consumption of load 170, the minimum pre-charging current value that the main energy storage module 110 needs to maintain before the energy stored in the auxiliary energy storage module 150 is exhausted is analyzed to complete the pre-charging step of the energy storage bus 120. According to the actual situation of the main energy storage module 110, when the minimum pre-charging current value is less than the required amount of power, the system will initiate the pre-charging process. The full precharge current value indicates that the main energy storage module 110 can maintain the minimum precharge current value. After completing the precharge step of the energy storage bus 120, the control switch assembly 130 switches from the open state to the closed state, controls the auxiliary energy storage module 150 to stop performing the pre-power supply step, and the energy storage bus 120 can supply power to the load 170. However, when the minimum precharge current value is greater than the safe precharge current value, it indicates that the main energy storage module 110 cannot maintain the minimum precharge current value under safe conditions. At this time, power regulation information needs to be output to indicate the reduction of the power consumption of the load 170, thereby extending the maximum precharge time value for the auxiliary energy storage module 150 to continuously supply power to the load 170. This application anticipates the precharge risk in advance to ensure power supply continuity and power safety.

[0029] In some embodiments of the present invention, the step of determining the power supply time that the auxiliary energy storage module can support based on the current auxiliary energy storage information and the load power consumption includes: The current energy storage value is determined based on the current auxiliary energy storage information. ; The allowable energy supply value is calculated using the current energy storage value and the reserved safe energy value of the auxiliary energy storage module. The reserved safe energy value is... , To allow for a safety margin, the permitted energy supply value is... ; The auxiliary energy storage module's supported power supply time is determined based on the allowable energy supply value and the load power consumption. ,in, This represents the power consumption of the load. This represents the power consumption value of the power supply line.

[0030] Understandably, a complete discharge of the auxiliary energy storage module can easily shorten its battery life; therefore, a safety margin is set here. , The value can range from 0.05 to 0.2, and can be set by the staff according to the actual situation. There is no specific limitation here. When the remaining energy of the auxiliary energy storage module is lower than the reserved safe energy value... If so, the auxiliary energy storage module will stop discharging.

[0031] Therefore, utilizing the current energy storage value and reserved safety energy value Calculate the allowable energy supply value Then calculate the time that can be supported by power supply. .

[0032] In some embodiments of the present invention, the auxiliary energy storage module may be composed of a supercapacitor or other capacitive energy storage unit, or it may be composed of a small-capacity battery pack with high charge and discharge efficiency.

[0033] When the auxiliary energy storage module is a supercapacitor or other capacitive energy storage unit, the current auxiliary energy storage information obtained by the monitoring module includes the current auxiliary energy storage voltage value. and the equivalent capacitance value of the auxiliary energy storage module The current energy storage value is obtained based on the current auxiliary energy storage information. Includes: ; in, To assist the minimum allowable discharge voltage value of the energy storage module, To improve the energy conversion efficiency of the auxiliary energy storage module.

[0034] Alternatively, when the auxiliary energy storage module is a battery pack, the current auxiliary energy storage information obtained by the monitoring module includes the current state of charge of the battery pack in the auxiliary energy storage module. The current energy storage value is obtained based on the current auxiliary energy storage information. Includes: ; in, To support the energy storage capacity of the battery pack in the auxiliary energy storage module, To support the minimum allowable state of charge of the battery pack in the energy storage module, To measure the average voltage of the battery pack in the auxiliary energy storage module within its usable discharge range, To improve the energy conversion efficiency of the auxiliary energy storage module.

[0035] In some embodiments of the present invention, the step of estimating the maximum precharge time value of the precharge step based on the sustainable power supply time value includes: ; in, This is the maximum precharge time value. This refers to the operating time value of the switchgear assembly. This is a safety margin time value.

[0036] Understandably, the available power supply time that the auxiliary energy storage module can maintain during the pre-power supply process needs to cover the maximum pre-charge time, the switching component operation time, and the safety margin time. Therefore, it can be concluded that the maximum precharge time value needs to be less than or equal to .

[0037] In some embodiments of the present invention, the minimum precharge current value required by the main energy storage module to charge the energy storage bus based on the maximum precharge time value includes: ; in, This is the equivalent capacitance of the energy storage bus. The target voltage value for closing the circuit breaker; This represents the initial residual voltage value of the energy storage bus.

[0038] When calculating the minimum pre-charge current value, the amount of charge required for pre-charging the energy storage bus is... It is understandable that in the initial stage of charging the energy storage bus, the voltage on the energy storage bus is not necessarily 0, and there is an initial residual voltage value. The difference between the target voltage value and the initial residual voltage value is calculated, and then the product of the difference and the equivalent capacitance is used to calculate the amount of charge required for pre-charging the energy storage bus.

[0039] The minimum precharge current value that needs to be met can be calculated by using the maximum precharge time limit. Understandably, when the minimum pre-charge current value... If the current value is still greater than the safe pre-charge current value, the pre-charge step can only use a value less than or equal to the safe pre-charge current value to pre-charge the energy storage bus. Therefore, the time required to complete the pre-charge step must be greater than the maximum pre-charge time value.

[0040] In some embodiments of the present invention, the operating status information includes the battery pack specifications of the main energy storage module, the current temperature value, and the current state of charge value of the main energy storage module. The determination of the currently permissible safe pre-charge current value of the main energy storage module based on the operating status information includes: The first maximum allowable discharge current value is determined based on the battery pack specifications. ; Based on the current temperature value, the second maximum allowable discharge current value of the main energy storage module at the current temperature is determined by matching it with the temperature-discharge current relationship curve. ; Based on the current temperature and current state of charge, derive the ideal open-circuit voltage for the current temperature and current state of charge. Then, calculate the third maximum discharge current based on the ideal open-circuit voltage. ; First maximum discharge current value Second maximum discharge current value and the third maximum discharge current value Choose the minimum value as the safe precharge current value.

[0041] The rated first maximum discharge current value can be obtained from the battery pack's specifications. Temperature affects the discharge current of the main energy storage module. The relationship between temperature and discharge current can be derived from the temperature-discharge current relationship curve. By obtaining the current temperature value, the corresponding second maximum discharge current value can be obtained from the discharge current relationship curve. .

[0042] Furthermore, different current temperature values ​​and different current state of charge values ​​in the main energy storage module will affect the discharge current. Therefore, based on the current state of charge value and current temperature value as compensation criteria, the ideal open-circuit voltage value of the main energy storage battery can be obtained through the relationship curve. The third maximum discharge current value is then calculated based on the ideal open-circuit voltage value. ,in, The ideal open-circuit voltage value is given by the current temperature and current state of charge. The minimum allowable voltage value for the main energy storage module. The equivalent internal resistance value of the main energy storage module. It is the equivalent resistance of the main circuit cable.

[0043] At the first maximum discharge current value Second maximum discharge current value and the third maximum discharge current value If the minimum value is selected as the safe pre-charge current value, then pre-charging with the minimum safe pre-charge current value will always satisfy the first maximum discharge current value. Second maximum discharge current value and the third maximum discharge current value The requirements are that pre-charging is safe and stable.

[0044] In some embodiments of the present invention, the output power regulation information for instructing a reduction in load power consumption includes: The time required for safe pre-charge is determined based on the safe pre-charge current value. Based on the time required for safe pre-charging, the maximum load power that the auxiliary energy storage module can support under the current energy conditions is determined. The maximum load power is output to the load controller, which then reduces the load power consumption to below the maximum load power consumption.

[0045] It is understandable that the maximum load power can be derived by using the safe pre-charge current value. The maximum load power is then output to the load controller, which uniformly reduces the load power so that the load power does not exceed the maximum load power. This ensures that the auxiliary energy storage module can provide continuous power supply before the pre-charging step is completed.

[0046] Specifically, the time required for the safety pre-charge ,in, Pre-charge current value for safety; The maximum load power consumption is .

[0047] An evaluation system according to a second aspect of the present invention, such as Figure 1 As shown, it is used to execute the emergency power supply start-up control method disclosed in any of the above embodiments.

[0048] According to a third aspect of the present invention, a computer-readable storage medium stores a computer program, characterized in that, when executed by a processor, the computer program implements the emergency power supply start-up control method disclosed in any of the above embodiments.

[0049] Memory, 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 may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0050] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0051] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0052] The device embodiments described above are 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.

[0053] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0054] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0055] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An emergency power supply start-up control method, applied to an emergency power supply system, the emergency power supply system including a main energy storage module, an energy storage bus, a switchgear assembly, an auxiliary energy storage module, and a monitoring module, wherein the main energy storage module is connected to the energy storage bus via the switchgear assembly, the energy storage bus is used to supply electrical energy to the load, the auxiliary energy storage module can supply power to the load, and the monitoring module is connected to the main energy storage module, the auxiliary energy storage module, and the switchgear assembly respectively, characterized in that... Emergency power supply start-up control methods include: The power supply status of the power supply bus is obtained. When the power supply status meets the fault conditions, the main energy storage module is controlled to perform a pre-charging step for the energy storage bus. In the pre-charging step, the switch assembly is in the open state, and the auxiliary energy storage module is controlled to perform a pre-power supply step to supply power to the load. Obtain the current auxiliary energy storage information of the auxiliary energy storage module, and calculate the power supply time that the auxiliary energy storage module can support based on the current auxiliary energy storage information and the power consumption of the load. The maximum precharge time value of the precharge step is estimated based on the available power supply time value. The minimum precharge current value required by the main energy storage module to charge the energy storage bus is determined based on the maximum precharge time value. Obtain the operating status information of the main energy storage module, and determine the current allowed safe pre-charge current value of the main energy storage module based on the operating status information; When the minimum precharge current value is less than the safe precharge current value, the precharge step and pre-power supply step are maintained. When the voltage of the energy storage bus reaches the closing target voltage, the control switch component is switched from the open state to the closed state, the auxiliary energy storage module is stopped from performing the pre-power supply step, and the energy storage bus supplies power to the load. When the minimum precharge current value is greater than the safe precharge current value, the precharge step and pre-power supply step are maintained, and power regulation information is output to indicate the reduction of load power consumption.

2. The emergency power supply start-up control method according to claim 1, characterized in that, The value of the auxiliary energy storage module's ability to support power supply, derived based on current auxiliary energy storage information and load power consumption, includes: The current energy storage value is determined based on the current auxiliary energy storage information. ; The allowable energy supply value is calculated using the current energy storage value and the reserved safe energy value of the auxiliary energy storage module. The reserved safe energy value is... , To allow for a safety margin, the permitted energy supply value is... ; The auxiliary energy storage module's supported power supply time is determined based on the allowable energy supply value and the load power consumption. ,in, This represents the power consumption of the load. This represents the power consumption value of the power supply line.

3. The emergency power supply start-up control method according to claim 2, characterized in that, The current auxiliary energy storage information includes the current auxiliary energy storage voltage value. and the equivalent capacitance value of the auxiliary energy storage module The current energy storage value is obtained based on the current auxiliary energy storage information. Includes: ； in, To assist the minimum allowable discharge voltage value of the energy storage module, To improve the energy conversion efficiency of the auxiliary energy storage module; Alternatively, the current auxiliary energy storage information may include the current state of charge of the battery pack in the auxiliary energy storage module. The current energy storage value is obtained based on the current auxiliary energy storage information. Includes: ； in, To support the energy storage capacity of the battery pack in the auxiliary energy storage module, To support the minimum allowable state of charge of the battery pack in the energy storage module, To measure the average voltage of the battery pack in the auxiliary energy storage module within its usable discharge range, To improve the energy conversion efficiency of the auxiliary energy storage module.

4. The emergency power supply start-up control method according to claim 2, characterized in that, The maximum precharge time value estimated based on the available power supply time value for the precharge step includes: ； in, This is the maximum precharge time value. This refers to the operating time value of the switchgear assembly. This is a safety margin time value.

5. The emergency power supply start-up control method according to claim 4, characterized in that, The minimum precharge current value required by the main energy storage module to charge the energy storage bus based on the maximum precharge time value includes: ； in, This is the equivalent capacitance of the energy storage bus. The target voltage value for closing the circuit breaker; This represents the initial residual voltage value of the energy storage bus.

6. The emergency power supply start-up control method according to claim 5, characterized in that, The operating status information includes the battery pack specifications of the main energy storage module, the current temperature value, and the current state of charge value of the main energy storage module. The determination of the currently permissible safe pre-charge current value of the main energy storage module based on the operating status information includes: The first maximum allowable discharge current value is determined based on the battery pack specifications. ; Based on the current temperature value, the second maximum allowable discharge current value of the main energy storage module at the current temperature is determined by matching it with the temperature-discharge current relationship curve. ; Based on the current temperature and current state of charge, derive the ideal open-circuit voltage for the current temperature and current state of charge. Then, calculate the third maximum discharge current based on the ideal open-circuit voltage. ; First maximum discharge current value Second maximum discharge current value and the third maximum discharge current value Choose the minimum value as the safe precharge current value.

7. The emergency power supply start-up control method according to claim 5, characterized in that, The output power regulation information for indicating a reduction in load power consumption includes: The time required for safe pre-charge is determined based on the safe pre-charge current value. Based on the time required for safe pre-charging, the maximum load power that the auxiliary energy storage module can support under the current energy conditions is determined. The maximum load power is output to the load controller, which then reduces the load power consumption to below the maximum load power consumption.

8. The emergency power supply start-up control method according to claim 7, characterized in that, The time required for the safety precharge ,in, Pre-charge current value for safety; The maximum load power consumption is .

9. An emergency power supply system, characterized in that, Used to perform the emergency power supply start-up control method as described in any one of claims 1 to 8.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the emergency power supply start-up control method according to any one of claims 1 to 8.

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