An uninterrupted power supply control method and energy storage power distribution cabinet

Abstract

The application discloses an uninterrupted power supply control method and an energy storage power distribution cabinet. The uninterrupted power supply control method comprises the following steps: responding to a first type of load and a second type of load and listening to an external trigger signal when commercial power fails; when the external trigger signal is received, calculating the maximum response duration of a third type of load; when the minimum residual response duration of the first type of load is greater than or equal to the maximum response duration of the third type of load, responding to the third type of load according to the maximum response duration of the third type of load, responding to the first type of load according to the maximum discharge capacity of an uninterrupted power supply, and responding to the second type of load according to a preset duration; when the minimum residual response duration of the first type of load is less than the maximum response duration of the third type of load, responding to the first type of load and the third type of load according to the maximum discharge capacity of the uninterrupted power supply, and responding to the second type of load according to the preset duration; and when the external trigger signal is not received, responding to the first type of load according to the maximum discharge capacity of the uninterrupted power supply, and responding to the second type of load according to the preset duration. By using the above scheme, the response duration of the first type of load can be prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply, in particular to an uninterrupted power supply control method and an energy storage power distribution cabinet. BACKGROUND

[0002] The power distribution cabinet is an important device for distributing power, controlling and protecting electrical loads in the power system, and is widely used in various power scenarios. Its main functions include: distributing the power of the upper power supply to multiple lower circuits according to the demand, and controlling the on-off of each circuit through circuit breakers, contactors and other switching elements. In actual application, one or more loads carried by the lower circuit still need to work for a certain time when the upper power supply fails, so in actual application, an uninterrupted power supply is provided in the power distribution cabinet to supply power to the loads that need uninterrupted power supply when the upper power supply fails.

[0003] However, in the prior art, the uninterrupted power supply in the power distribution cabinet uniformly supplies power to all loads that still need to work when the upper power supply fails. Due to the limited energy of the uninterrupted power supply, such power supply mode limits the working time of high-priority loads. SUMMARY

[0004] The present application provides an uninterrupted power supply control method and an energy storage power distribution cabinet to reduce the energy consumption of three types of loads and prolong the response time of the first type of load.

[0005] According to an aspect of the present application, an uninterrupted power supply control method is provided, applied to an energy storage power distribution cabinet, the uninterrupted power supply of the energy storage power distribution cabinet being coupled to a first type of load, a second type of load and a third type of load, respectively, the uninterrupted power supply control method comprising:

[0006] responding to the first type of load and the second type of load and listening to an external trigger signal when the commercial power fails;

[0007] if the external trigger signal is received, calculating the maximum response time of the third type of load;

[0008] if the minimum remaining response time of the first type of load is greater than or equal to the maximum response time of the third type of load, responding to the third type of load according to the maximum response time of the third type of load, responding to the first type of load according to the maximum discharge capacity of the uninterrupted power supply, and responding to the second type of load according to a preset time;

[0009] if the minimum remaining response time of the first type of load is less than the maximum response time of the third type of load, responding to the first type of load and the third type of load according to the maximum discharge capacity of the uninterrupted power supply, and responding to the second type of load according to the preset time;

[0010] If the external trigger signal is not received, the first type of load is responded to according to the maximum discharge capacity of the uninterruptible power supply and the second type of load is responded to according to the preset time length.

[0011] Optionally, the specific method of calculating the maximum response time length of the third type of load comprises:

[0012] calculating the minimum power consumption of the first type of load according to the minimum response time length of the first type of load and the power of the first type of load;

[0013] calculating the power consumption of the second type of load according to the preset time length and the power of the second type of load;

[0014] calculating the maximum response time length of the third type of load according to the maximum discharge capacity of the uninterruptible power supply, the minimum power consumption of the first type of load, the power consumption of the second type of load and the power of the third type of load.

[0015] Optionally, the specific method of responding to the first type of load according to the maximum discharge capacity of the uninterruptible power supply comprises:

[0016] acquiring the current discharge capacity of the uninterruptible power supply;

[0017] if the current discharge capacity of the uninterruptible power supply is greater than the maximum discharge capacity of the uninterruptible power supply, stopping responding to the first type of load;

[0018] if the current discharge capacity of the uninterruptible power supply is less than or equal to the maximum discharge capacity of the uninterruptible power supply, re-acquiring the current discharge capacity of the uninterruptible power supply.

[0019] Optionally, the specific method of acquiring the current discharge capacity of the uninterruptible power supply when the external trigger signal is received comprises:

[0020] calculating the current power consumption of the first type of load according to the current response time length of the first type of load and the power of the first type of load;

[0021] calculating the current power consumption of the second type of load according to the current response time length of the second type of load and the power of the second type of load;

[0022] calculating the current power consumption of the third type of load according to the current response time length of the third type of load and the power of the third type of load;

[0023] calculating the current discharge capacity of the uninterruptible power supply according to the current power consumption of the first type of load, the current power consumption of the second type of load and the current power consumption of the third type of load.

[0024] Optionally, the specific method of acquiring the current discharge capacity of the uninterruptible power supply when the external trigger signal is not received comprises:

[0025] calculate the current power consumption of the first type of load according to the current response duration of the first type of load and the power of the first type of load;

[0026] calculate the current power consumption of the second type of load according to the current response duration of the second type of load and the power of the second type of load;

[0027] calculate the current discharge amount of the uninterruptible power supply according to the current power consumption of the first type of load and the current power consumption of the second type of load.

[0028] According to another aspect of the present application, there is also provided an energy storage power distribution cabinet, comprising: an uninterruptible power supply, a first circuit breaker, a first switch, a second switch and a controller;

[0029] The uninterruptible power supply is coupled to the first type of load through the first circuit breaker, the uninterruptible power supply is coupled to the second type of load through the first switch, the uninterruptible power supply is coupled to the third type of load through the second switch, and the first circuit breaker, the first switch and the second switch are all coupled to the controller;

[0030] The uninterruptible power supply is used to provide power when the mains power is off, the first circuit breaker is used to control whether the uninterruptible power supply responds to the first type of load, the first switch is used to control whether the uninterruptible power supply responds to the second type of load, the second switch is used to control whether the uninterruptible power supply responds to the third type of load, and the controller is used to execute the uninterruptible power supply control method described in any of the above embodiments.

[0031] Optionally, the energy storage power distribution cabinet further comprises: a second circuit breaker and a third circuit breaker;

[0032] The second circuit breaker is coupled between the first switch and the second type of load, and the third circuit breaker is coupled between the second switch and the third type of load.

[0033] Optionally, the uninterruptible power supply comprises: an uninterruptible energy storage battery, a fourth circuit breaker and an interface board;

[0034] The uninterruptible energy storage battery, the fourth circuit breaker and the interface board are connected in sequence, the interface board is further coupled to the first circuit breaker, the first switch and the second switch, and the interface board is further connected to the mains power.

[0035] Optionally, the energy storage power distribution cabinet further comprises: a three-phase circuit breaker, a three-phase distributor, a fifth circuit breaker and at least one sixth circuit breaker;

[0036] Each of the sixth circuit breakers is coupled to the power supply through the three-phase distributor and the three-phase circuit breaker, and each of the sixth circuit breakers is further coupled to the fourth type of load; and the uninterruptible power supply is coupled to the power supply through the fifth circuit breaker, the three-phase distributor and the three-phase circuit breaker.

[0037] Optionally, the energy storage power distribution cabinet further comprises a surge protector and a seventh circuit breaker.

[0038] The surge protector is coupled to the three-phase distributor through the seventh circuit breaker, and the surge protector is further grounded.

[0039] The embodiment of the present application responds to the first type of load and the second type of load when the power supply is powered off, and calculates the maximum response duration of the third type of load when receiving an external trigger signal. When the maximum response duration of the third type of load is less than the minimum remaining response duration of the first type of load, the third type of load is responded to according to the maximum discharge capacity of the uninterruptible power supply. When the maximum response duration of the third type of load is greater than or equal to the minimum remaining response duration of the first type of load, the third type of load is responded to according to the maximum response duration of the third type of load. The embodiment of the present application dynamically controls the response duration of the third type of load, which is beneficial to reduce the energy consumption of the third type of load and prolong the response duration of the first type of load.

[0040] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0042] Figure 1 is a flowchart of an uninterrupted power supply control method provided by the embodiment of the present application;

[0043] Figure 2 is a flowchart of a current discharge capacity acquisition method of an uninterruptible power supply provided by the embodiment of the present application;

[0044] Figure 3 is a flowchart of another current discharge capacity acquisition method of an uninterruptible power supply provided by the embodiment of the present application;

[0045] Figure 4 is a schematic diagram of an energy storage power distribution cabinet provided by the embodiment of the present application. DETAILED DESCRIPTION

[0046] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should belong to the protection scope of the present application.

[0047] It should be noted that the terms "first", "second", and the like in the description and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to include only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product, or device.

[0048] The embodiment of the present application provides an uninterrupted power supply control method. The uninterrupted power supply control method is applied to an energy storage power distribution cabinet, which responds to a first type of load and a second type of load when the commercial power is powered off, and calculates a maximum response duration of a third type of load when an external trigger signal is received. When the maximum response duration of the third type of load is less than a minimum residual response duration of the first type of load, the third type of load is responded to according to a maximum discharge amount of an uninterrupted power supply. When the maximum response duration of the third type of load is greater than or equal to the minimum residual response duration of the first type of load, the third type of load is responded to according to the maximum response duration of the third type of load. The embodiment dynamically controls the response duration of the third type of load, which is beneficial to reduce the energy consumption of the third type of load and prolong the response duration of the first type of load. Figure 1 is a flowchart of an uninterrupted power supply control method provided by the embodiment of the present application. The uninterrupted power supply of the energy storage power distribution cabinet is coupled with the first type of load, the second type of load, and the third type of load. Referring to Figure 1 The uninterrupted power supply control method comprises the following steps.

[0049] S110, responding to the first type of load and the second type of load and listening to the external trigger signal when the commercial power is powered off.

[0050] Specifically, when the commercial power is normal, the commercial power responds to the first type of load, the second type of load and the third type of load, at this time, the first type of load, the second type of load and the third type of load work under the drive of the commercial power. When the commercial power is powered off, the uninterrupted power supply of the energy storage power distribution cabinet responds to the first type of load and the second type of load, at this time, the first type of load and the second type of load work under the drive of the uninterrupted power supply, and the third type of load stops working. Among them, the first type of load is a load that needs uninterrupted power supply and cannot stop working; the second type of load is a load that needs uninterrupted power supply but can stop working; the third type of load is a load that does not need uninterrupted power supply. The power supply priority of the three types of loads from high to low is the first type of load, the second type of load and the third type of load. Exemplarily, the first type of load can be at least one of a battery management system, auxiliary power supply of the energy storage power distribution cabinet, a total controller, a switch or an electric meter; the second type of load can be a fire control controller; and the third type of load can be a fire fan.

[0051] S120, determining whether an external trigger signal is received; if yes, performing S130-S140; if no, performing S170.

[0052] Specifically, the external trigger signal is a power supply trigger signal of the third type of load. When the external trigger signal is received, the uninterrupted power supply calculates the maximum response duration of the third type of load, and controls the actual response duration of the third type of load according to the minimum remaining response duration of the first type of load and the maximum response duration of the third type of load, to ensure that the response duration of the first type of load can reach its minimum response duration. The minimum response duration of the first type of load is the minimum power supply duration of the first type of load by the uninterrupted power supply after the commercial power is powered off, which is set in advance.

[0053] S130, calculating the maximum response duration of the third type of load.

[0054] Specifically, when the commercial power is powered off, the uninterrupted power supply responds to the work of the first type of load, the second type of load and the third type of load, that is, the uninterrupted power supply supplies power to the first type of load, the second type of load and the third type of load. The response duration of the first type of load needs to meet the minimum response duration of the first type of load, and the response duration of the second type of load needs to meet the preset duration. When responding to the first type of load and the second type of load, the first type of load and the second type of load both need to occupy the power of the uninterrupted power supply, therefore, the maximum disposable power of the third type of load is the difference between the maximum discharge power of the uninterrupted power supply and the sum of the minimum power consumption of the first type of load and the power consumption of the second type of load. The minimum power consumption of the first type of load is the power consumption of the first type of load under the minimum response duration, and the power consumption of the second type of load is the power consumption of the second type of load under the preset duration. The minimum power consumption of the first type of load can be calculated by the minimum response duration of the first type of load and the power of the first type of load, and the power consumption of the second type of load can be calculated by the preset duration and the power of the second type of load.

[0055] Wherein, the maximum discharge capacity of the uninterruptible power supply should be less than the actual capacity of the uninterruptible power supply, so as to avoid over-discharge of the uninterruptible power supply. In actual application, the maximum discharge capacity of the uninterruptible power supply can be limited by setting the discharge depth coefficient. The product of the total capacity of the uninterruptible power supply and the discharge depth coefficient is the maximum discharge capacity of the uninterruptible power supply.

[0056] Exemplarily, the power of the first type of load is 450W, the power of the second type of load is 200W, the power of the third type of load is 500W, the total capacity of the uninterruptible power supply is 1728Wh, the discharge depth coefficient is 0.9, the minimum response time of the first type of load is 2h, and the preset time is 1.5h.

[0057]

[0058] Wherein, P1 is the power of the first type of load, P2 is the power of the second type of load, and P3 is the power of the third type of load; T3 is the maximum response time of the third type of load; P 总 is the total capacity of the uninterruptible power supply.

[0059]

[0060] The maximum response time of the third type of load is calculated to be 0.7 hours.

[0061] S140, judge whether the minimum remaining response time of the first type of load is greater than or equal to the maximum response time of the third type of load; if yes, execute S150; if no, execute S160.

[0062] Specifically, when the minimum remaining response time of the first type of load is greater than or equal to the maximum response time of the third type of load, it indicates that the first type of load will not affect the response of the third type of load for its maximum response time, and the uninterruptible power supply can respond to the first type of load for its minimum response time, and on the basis of responding to the second type of load for the preset time, respond to the third type of load for its maximum response time; when the minimum remaining response time of the first type of load is less than the maximum response time of the third type of load, it indicates that the first type of load will affect the response of the third type of load for its maximum response time, and the uninterruptible power supply cannot respond to the first type of load for its minimum response time, and on the basis of responding to the second type of load for the preset time, respond to the third type of load for its maximum response time. Wherein, the minimum remaining response time of the first type of load is the difference between the minimum response time of the first type of load and the current response time of the first type of load.

[0063] S150, respond to the third type of load according to the maximum response time of the third type of load, respond to the first type of load according to the maximum discharge capacity of the uninterruptible power supply, and respond to the second type of load according to the preset time.

[0064] ​​Specifically, the response to the three-type load is stopped when the actual response duration of the three-type load reaches the maximum response duration of the three-type load, and the response to the two-type load is stopped when the actual response duration of the two-type load reaches the preset duration. The preset duration is the maximum response duration of the two-type load.

[0065] It should be noted that when the one-type load is responded according to the maximum discharge capacity of the uninterruptible power supply, the current discharge capacity of the uninterruptible power supply needs to be calculated, the response to the one-type load is stopped when the current discharge capacity of the uninterruptible power supply reaches the maximum discharge capacity of the uninterruptible power supply, and the current discharge capacity of the uninterruptible power supply is reacquired when the current discharge capacity of the uninterruptible power supply does not reach the maximum discharge capacity of the uninterruptible power supply until the current discharge capacity of the uninterruptible power supply reaches the maximum discharge capacity of the uninterruptible power supply.

[0066] S160, responding to the one-type load and the three-type load according to the maximum discharge capacity of the uninterruptible power supply and responding to the two-type load according to the preset duration.

[0067] Specifically, the response to the two-type load is stopped when the actual response duration of the two-type load reaches the preset duration, and the response to the one-type load and the three-type load is stopped when the current discharge capacity of the uninterruptible power supply reaches the maximum discharge capacity of the uninterruptible power supply.

[0068] S170, responding to the one-type load according to the maximum discharge capacity of the uninterruptible power supply and responding to the two-type load according to the preset duration.

[0069] Specifically, the response to the two-type load is stopped when the actual response duration of the two-type load reaches the preset duration. When the one-type load is responded according to the maximum discharge capacity of the uninterruptible power supply, the current discharge capacity of the uninterruptible power supply needs to be calculated, the response to the one-type load is stopped when the current discharge capacity of the uninterruptible power supply reaches the maximum discharge capacity of the uninterruptible power supply, and the current discharge capacity of the uninterruptible power supply is reacquired when the current discharge capacity of the uninterruptible power supply does not reach the maximum discharge capacity of the uninterruptible power supply until the current discharge capacity of the uninterruptible power supply reaches the maximum discharge capacity of the uninterruptible power supply.

[0070] It should be noted that when the external trigger signal is not received, the uninterruptible power supply does not respond to the three-type load, and therefore the actual response duration of the one-type load by the uninterruptible power supply when the external trigger signal is not received is greater than the actual response duration of the one-type load by the uninterruptible power supply when the external trigger signal is received.

[0071] The embodiment of the present application responds to the first type of load and the second type of load when the commercial power is powered off, and calculates the maximum response duration of the third type of load when receiving an external trigger signal. When the maximum response duration of the third type of load is less than the minimum residual response duration of the first type of load, the third type of load is responded according to the maximum discharge capacity of the uninterruptible power supply. When the maximum response duration of the third type of load is greater than or equal to the minimum residual response duration of the first type of load, the third type of load is responded according to the maximum response duration of the third type of load. The embodiment of the present application dynamically controls the response duration of the third type of load, which is beneficial to reduce the energy consumption of the third type of load and prolong the response duration of the first type of load.

[0072] As can be seen from the above description, whether the uninterruptible power supply responds to the third type of load depends on whether the external trigger signal is received. When the external trigger signal is received, the first type of load, the second type of load and the third type of load all consume the power of the uninterruptible power supply. When the external trigger signal is not received, only the first type of load and the second type of load consume the power of the uninterruptible power supply. Therefore, the calculation method of the current discharge capacity of the uninterruptible power supply when the external trigger signal is received is different from the calculation method of the current discharge capacity of the uninterruptible power supply when the external trigger signal is not received.

[0073] Figure 2 is a flow chart of a method for acquiring the current discharge capacity of an uninterruptible power supply provided by the embodiment of the present application. On the basis of the above embodiments, the method for acquiring the current discharge capacity of the uninterruptible power supply can be acquired by the method for acquiring the current discharge capacity of the uninterruptible power supply provided by the embodiment of the present application. Figure 2 When the external trigger signal is received, the specific method for acquiring the current discharge capacity of the uninterruptible power supply includes:

[0074] S210, calculating the current power consumption of the first type of load according to the current response duration of the first type of load and the power of the first type of load.

[0075] Specifically, the current response duration of the first type of load can be calculated according to the current time and the commercial power-off time. According to the power formula, the power of the load multiplied by the response duration of the load is the power consumed by the load in response. Therefore, the product of the current response duration of the first type of load and the power of the first type of load is the current power consumption of the first type of load.

[0076] S220, calculating the current power consumption of the second type of load according to the current response duration of the second type of load and the power of the second type of load.

[0077] Specifically, when the actual response duration of the second type of load has reached the preset response duration, the preset response duration is the current response duration of the second type of load. When the actual response duration of the second type of load has not reached the preset response duration, the current response duration of the second type of load can be calculated according to the current time and the commercial power-off time. The product of the current response duration of the second type of load and the power of the second type of load is the current power consumption of the second type of load.

[0078] S230, calculating the current power consumption of the three-type load according to the current response duration of the three-type load and the power of the three-type load.

[0079] Specifically, when the actual response duration of the three-type load has reached the maximum response duration of the three-type load, the maximum response duration of the three-type load is the current response duration of the three-type load; when the actual response duration of the three-type load has not reached the preset response duration, the current response duration of the three-type load can be calculated according to the current time and the time when the external trigger signal is received. The product of the current response duration of the three-type load and the power of the three-type load is the current power consumption of the three-type load.

[0080] S240, calculating the current discharge amount of the uninterruptible power supply according to the current power consumption of the first-type load, the current power consumption of the second-type load and the current power consumption of the three-type load.

[0081] Specifically, the sum of the current power consumption of the first-type load, the current power consumption of the second-type load and the current power consumption of the three-type load is the current discharge amount of the uninterruptible power supply.

[0082] Figure 3 is a flowchart of another method for acquiring the current discharge amount of the uninterruptible power supply provided by the embodiment of the application. Based on the above-mentioned embodiments, optionally, with reference to Figure 3 When the external trigger signal is not received, the specific method for acquiring the current discharge amount of the uninterruptible power supply comprises:

[0083] S250, calculating the current power consumption of the first-type load according to the current response duration of the first-type load and the power of the first-type load.

[0084] Specifically, the current response duration of the first-type load can be calculated according to the current time and the time when the commercial power is turned off. According to the power formula, the power of the load multiplied by the response duration of the load is the power consumption of the load in response. Therefore, the product of the current response duration of the first-type load and the power of the first-type load is the current power consumption of the first-type load. It should be noted that the load power of the first-type load can be acquired by the controller communicating with the first-type load, or can be obtained according to the input information of the user, and the embodiment does not limit this.

[0085] S260, calculating the current power consumption of the second-type load according to the current response duration of the second-type load and the power of the second-type load.

[0086] Specifically, when the actual response duration of the second-class load reaches the preset response duration, the preset response duration is the current response duration of the second-class load; when the actual response duration of the second-class load does not reach the preset response duration, the current response duration of the second-class load can be calculated according to the current time and the city power outage time. The product of the current response duration of the second-class load and the power of the second-class load is the current power consumption of the second-class load. Similarly, the load power of the second-class load can be obtained by communication between the controller and the second-class load, or can be obtained according to the input information of the user, and the embodiment does not limit this.

[0087] S270, calculating the current discharge amount of the uninterruptible power supply according to the current power consumption of the first-class load and the current power consumption of the second-class load.

[0088] Specifically, the sum of the current power consumption of the first-class load and the current power consumption of the second-class load is the current discharge amount of the uninterruptible power supply.

[0089] The embodiment of the application also provides a kind of energy storage power distribution cabinet. Figure 4 It is a kind of energy storage power distribution cabinet provided by the embodiment of the application. Refer to Figure 4 The energy storage power distribution cabinet includes: uninterruptible power supply 10, first circuit breaker 20, first switch 30, second switch 40 and controller 50.

[0090] The uninterruptible power supply 10 is coupled with the first-class load 100 through the first circuit breaker 20, the uninterruptible power supply 10 is coupled with the second-class load 200 through the first switch 30, the uninterruptible power supply 10 is coupled with the third-class load 300 through the second switch 40, and the first circuit breaker 20, the first switch 30 and the second switch 40 are all coupled with the controller 50. The uninterruptible power supply 10 is used to provide power when the city power AC is powered off; the first circuit breaker 20 is used to control whether the uninterruptible power supply 10 responds to the first-class load 100; the first switch 30 is used to control whether the uninterruptible power supply 10 responds to the second-class load 200; the second switch 40 is used to control whether the uninterruptible power supply 10 responds to the third-class load 300; the controller 50 is used to execute the uninterruptible power supply control method provided by any of the above embodiments.

[0091] Specifically, when the utility AC is normal, the utility AC responds to the first type of load 100, the second type of load 200 and the third type of load 300, that is, the first type of load 100, the second type of load 200 and the third type of load 300 are powered by the utility AC when the utility AC is normal. The first type of load 100, the second type of load 200 and the third type of load 300 are coupled to the utility AC through the uninterruptible power supply 10, and the first type of load 100, the second type of load 200 and the third type of load 300 are switched to be powered by the uninterruptible power supply 10 when the utility AC is abnormal. It should be noted that the response of the uninterruptible power supply 10 or the utility AC to the third type of load 300 needs to be triggered by an external trigger signal, that is, the third type of load 300 does not work without an external trigger signal. The uninterruptible power supply 10 or the utility AC responds to the third type of load 300 through the second switch 40, and controls the second switch 40 to be turned on when the external trigger signal is received. The second switch 40 has two input terminals, one of which is coupled to the uninterruptible power supply 10 and the other of which is coupled to the utility AC. When the utility AC is normal, if the external trigger signal is received, the second switch 40 connects the third type of load 300 to the utility AC, so that the utility AC responds to the third type of load 300; when the utility AC is abnormal, if the external trigger signal is received, the second switch 40 connects the third type of load 300 to the uninterruptible power supply 10, so that the uninterruptible power supply 10 responds to the third type of load 300.

[0092] The first switch 30 is only turned off when the utility AC is abnormal and the response time of the uninterruptible power supply 10 to the second type of load 200 reaches the preset time. The first circuit breaker 20 disconnects the circuit between the uninterruptible power supply 10 and the first type of load 100 when the current discharge capacity of the uninterruptible power supply 10 reaches the maximum discharge capacity of the uninterruptible power supply 10. The conduction or turn-off of the first circuit breaker 20, the first switch 30 and the second switch 40 is controlled by the controller 50. For example, the first switch 30 and the second switch 40 can be contactors or integrated electronic switches.

[0093] The controller 50 detects the utility AC through the uninterruptible power supply 10. When the utility AC is abnormal, the controller 50 performs the uninterruptible power supply control method provided in any of the above embodiments. For example, the controller 50 can be a battery array unit (BAU).

[0094] On the basis of the above embodiments, optionally, continuing to refer to Figure 4 The energy storage power distribution cabinet further comprises a second circuit breaker 60 and a third circuit breaker 70.

[0095] The second circuit breaker 60 is coupled between the first switch 30 and the second type of load 200, and the third circuit breaker 70 is coupled between the second switch 40 and the third type of load 300.

[0096] The second circuit breaker 60 and the third circuit breaker 70 are turned off when the first circuit breaker 20 is turned off, that is, the second circuit breaker 60 disconnects the circuit between the uninterruptible power supply 10 and the second type of load 200 when the current discharge capacity of the uninterruptible power supply 10 reaches the maximum discharge capacity of the uninterruptible power supply 10, and the third circuit breaker 70 disconnects the circuit between the uninterruptible power supply 10 and the third type of load 300 when the current discharge capacity of the uninterruptible power supply 10 reaches the maximum discharge capacity of the uninterruptible power supply 10. The arrangement of the second circuit breaker 60 and the third circuit breaker 70 in the embodiment helps to ensure that the connection between the uninterruptible power supply 10 and the second type of load 200 and the third type of load 300 is cut off when the current discharge capacity of the uninterruptible power supply 10 reaches the maximum discharge capacity of the uninterruptible power supply 10, so as to avoid over-discharge of the uninterruptible power supply 10.

[0097] On the basis of the above embodiments, optionally, with reference to Figure 4 The uninterruptible power supply 10 comprises an uninterruptible energy storage battery 11, a fourth circuit breaker 12, and an interface board 13.

[0098] The uninterruptible energy storage battery 11, the fourth circuit breaker 12, and the interface board 13 are connected in sequence, and the interface board 13 is further coupled to the first circuit breaker 20, the first switch 30, and the second switch 40. The interface board 13 is further connected to the commercial AC power.

[0099] The uninterruptible energy storage battery 11 responds to the first type of load 100, the second type of load 200, and the third type of load 300 through the interface board 13 when the commercial AC power is abnormal, and the uninterruptible energy storage battery 11 is also charged through the interface board 13 when the commercial AC power is normal. The fourth circuit breaker 12 disconnects the circuit between the uninterruptible energy storage battery 11 and the interface board 13 when the current discharge capacity of the uninterruptible energy storage battery 11 reaches the maximum discharge capacity of the uninterruptible energy storage battery 11, so as to avoid over-discharge of the uninterruptible energy storage battery 11.

[0100] For example, in actual application, the controller 50 can record the number of times when the uninterruptible energy storage battery 11 reaches the maximum discharge capacity. By comparing the current number of times when the uninterruptible energy storage battery 11 reaches the maximum discharge capacity with the maximum number of times when the uninterruptible energy storage battery 11 reaches the maximum discharge capacity, the service life of the uninterruptible energy storage battery 11 can be evaluated, so as to avoid the influence of the service life attenuation of the uninterruptible energy storage battery 11 on the response duration of the first type of load 100.

[0101] On the basis of the above embodiments, optionally, with reference to Figure 4 The energy storage power distribution cabinet further comprises a three-phase circuit breaker 1, a three-phase distributor 2, a fifth circuit breaker 3, and at least one sixth circuit breaker 4.

[0102] Each sixth circuit breaker 4 is coupled to the AC power supply through the three-phase distributor 2 and the three-phase circuit breaker 1, and is also coupled to the fourth type of load 400. The uninterruptible power supply 10 is coupled to the AC power supply through the fifth circuit breaker 3, the three-phase distributor 2 and the three-phase circuit breaker 1.

[0103] Specifically, the fourth type of load 400 is responsive to the AC power supply, i.e. is powered by the AC power supply. When the AC power supply is abnormal, the fourth type of load 400 stops working.

[0104] Exemplarily, the uninterruptible power supply 10 can be connected to the AC power supply through the power socket 80 and the fifth circuit breaker 3, and the uninterruptible power supply 10 is charged through the plugged power socket 80. In actual application, the power socket 80 can be connected to at least two AC power supplies to improve the power supply stability of the uninterruptible power supply 10. When the power socket 80 is connected to at least two AC power supplies, the different AC power supplies can be connected through the dual power supply switch 90. Each AC power supply is provided with the fifth circuit breaker 3 between the AC power supply and the dual power supply switch 90. The dual power supply switch 90 has at least two AC power supply input ends.

[0105] Based on the above embodiments, optionally, with reference to Figure 4 the energy storage power distribution cabinet further comprises a surge protector 5 and a seventh circuit breaker 6.

[0106] The surge protector 5 is coupled to the three-phase distributor 2 through the seventh circuit breaker 6, and the surge protector 5 is also grounded.

[0107] Specifically, the surge protector 5 discharges the surge current in each loop of the three-phase distributor 2 to avoid the surge impact on each load connected to the three-phase distributor 2.

[0108] It should be understood that various forms of the flow shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0109] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An uninterruptible power supply control method characterized by, The application is applied to an energy storage power distribution cabinet, an uninterrupted power supply of the energy storage power distribution cabinet is respectively coupled with a first type of load, a second type of load and a third type of load, and an uninterrupted power supply control method comprises the following steps: in response to the first type of load and the second type of load and listening to an external trigger signal when the mains power is off; if the external trigger signal is received, the maximum response time of the third type of load is calculated; if the minimum remaining response time of the first type of load is greater than or equal to the maximum response time of the third type of load, the third type of load is responded according to the maximum response time of the third type of load, the first type of load is responded according to the maximum discharge capacity of the uninterrupted power supply, and the second type of load is responded according to a preset time; if the minimum remaining response time of the first type of load is less than the maximum response time of the third type of load, the first type of load and the third type of load are responded according to the maximum discharge capacity of the uninterrupted power supply, and the second type of load is responded according to the preset time; if the external trigger signal is not received, the first type of load is responded according to the maximum discharge capacity of the uninterrupted power supply, and the second type of load is responded according to the preset time; wherein the specific method for calculating the maximum response time of the third type of load comprises: the minimum power consumption of the first type of load is calculated according to the minimum response time of the first type of load and the power of the first type of load; the power consumption of the second type of load is calculated according to the preset time and the power of the second type of load; the maximum response time of the third type of load is calculated according to the maximum discharge capacity of the uninterrupted power supply, the minimum power consumption of the first type of load, the power consumption of the second type of load and the power of the third type of load; the first type of load is a load that needs uninterrupted power supply and needs to work continuously, the second type of load is a load that needs uninterrupted power supply but can stop working, and the third type of load is a load that does not need uninterrupted power supply, the power supply priority of the first type of load is the highest, and the power supply priority of the third type of load is the lowest.

2. The method of claim 1, wherein, the specific method for responding to the first type of load according to the maximum discharge capacity of the uninterrupted power supply comprises: the current discharge capacity of the uninterrupted power supply is obtained; if the current discharge capacity of the uninterrupted power supply is greater than the maximum discharge capacity of the uninterrupted power supply, the response to the first type of load is stopped; if the current discharge capacity of the uninterrupted power supply is less than or equal to the maximum discharge capacity of the uninterrupted power supply, the current discharge capacity of the uninterrupted power supply is re-obtained.

3. The method of claim 2, wherein, when the external trigger signal is received, the specific method for obtaining the current discharge capacity of the uninterrupted power supply comprises: the current power consumption of the first type of load is calculated according to the current response time of the first type of load and the power of the first type of load; the current power consumption of the second type of load is calculated according to the current response time of the second type of load and the power of the second type of load; the current power consumption of the third type of load is calculated according to the current response time of the third type of load and the power of the third type of load; the current discharge capacity of the uninterrupted power supply is calculated according to the current power consumption of the first type of load, the current power consumption of the second type of load and the current power consumption of the third type of load.

4. The method of claim 2, wherein, The specific method for obtaining the current discharge amount of the uninterruptible power supply when the external trigger signal is not received comprises: calculating the current power consumption of the first type of load according to the current response duration of the first type of load and the power of the first type of load; calculating the current power consumption of the second type of load according to the current response duration of the second type of load and the power of the second type of load; calculating the current discharge amount of the uninterruptible power supply according to the current power consumption of the first type of load and the current power consumption of the second type of load.

5. An energy storage power distribution cabinet, characterized by, comprise: an uninterruptible power supply, a first circuit breaker, a first switch, a second switch and a controller; the uninterruptible power supply is coupled to the first type of load through the first circuit breaker, the uninterruptible power supply is coupled to the second type of load through the first switch, the uninterruptible power supply is coupled to the third type of load through the second switch, and the first circuit breaker, the first switch and the second switch are all coupled to the controller; the uninterruptible power supply is configured to provide power when the commercial power supply is powered off; the first circuit breaker is configured to control whether the uninterruptible power supply responds to the first type of load; the first switch is configured to control whether the uninterruptible power supply responds to the second type of load; and the second switch is configured to control whether the uninterruptible power supply responds to the third type of load; the controller is configured to perform the uninterruptible power supply control method according to any one of claims 1-4.

6. The energy storage power distribution cabinet of claim 5, wherein, further comprise: a second circuit breaker and a third circuit breaker; the second circuit breaker is coupled between the first switch and the second type of load, and the third circuit breaker is coupled between the second switch and the third type of load.

7. The energy storage power distribution cabinet of claim 5, wherein, the uninterruptible power supply comprises an uninterruptible energy storage battery, a fourth circuit breaker and an interface board; the uninterruptible energy storage battery, the fourth circuit breaker and the interface board are connected in sequence, the interface board is further coupled to the first circuit breaker, the first switch and the second switch, and the interface board is further connected to the commercial power supply.

8. The energy storage power distribution cabinet of claim 5, wherein, further comprise: a three-phase circuit breaker, a three-phase distributor, a fifth circuit breaker and at least one sixth circuit breaker; each sixth circuit breaker is coupled to the commercial power supply through the three-phase distributor and the three-phase circuit breaker, and each sixth circuit breaker is further coupled to a fourth type of load; and the uninterruptible power supply is coupled to the commercial power supply through the fifth circuit breaker, the three-phase distributor and the three-phase circuit breaker.

9. The energy storage power distribution cabinet of claim 8, wherein, further comprise: a surge protector and a seventh circuit breaker; the surge protector is coupled to the three-phase distributor through the seventh circuit breaker, and the surge protector is further grounded.

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