CN114301050A - Control method of uninterruptible power supply rectifier module, terminal and storage medium - Google Patents
Control method of uninterruptible power supply rectifier module, terminal and storage medium Download PDFInfo
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Abstract
The invention provides a control method of an uninterruptible power supply rectifier module, a terminal and a storage medium. The method comprises the following steps: acquiring an overload coefficient of a rectifying module; the overload coefficients are used for representing the overload capacity of the N rectifying modules; when the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system; determining the minimum number of rectifier modules which can be started simultaneously after the mains supply is restored according to the electrical parameters and the overload coefficient, and recording the minimum number as M; wherein N is more than or equal to M, and M, N are positive integers; determining the number K of equivalent rectification modules according to the parameters of the battery; judging whether to start L rectifying modules simultaneously according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules; wherein L is more than or equal to 1 and less than or equal to M; the remaining rectifier modules are started. The invention optimizes the starting control of the rectifier module, avoids the overcurrent protection of the rectifier module or the impact on a power grid under the condition of ensuring that the rectifier module meets the normal operation of a load after being started, and realizes the stable operation of the data center.
Description
Technical Field
The invention relates to the technical field of data centers, in particular to a control method, a terminal and a storage medium of an uninterruptible power supply rectifier module.
Background
Most of the existing direct current power supply systems have two power supply lines for supplying power to a direct current bus so as to ensure the normal operation of each load on the direct current bus. As shown in fig. 1, the first power supply line supplies power to the dc bus through the rectifier module, and the second power supply line supplies power to the dc bus through the battery. The rectifying module comprises N parallel rectifying modules. When the commercial power is normal, the first power supply line generally supplies power to the direct current bus. And under the condition of undervoltage or power failure of the mains supply, the second power supply circuit is switched to supply power for the direct current bus. When the commercial power is recovered to normal, the first power supply line needs to be switched back to supply power, and at the moment, the N rectifying modules in the rectifying module need to be restarted.
In the prior art, after the commercial power is recovered, there are generally two ways to restart N rectifier modules in the rectifier module. The first mode is to start the N rectifier modules in sequence, and the second mode is to start the N rectifier modules simultaneously. However, in the first method, when a single rectifier module is started, an output impact current may be too large, which may cause the rectifier module to output overcurrent protection, and the remaining rectifier modules are started at intervals in sequence, which may eventually cause all rectifier modules to have overcurrent protection and fail to start normally. By adopting the second mode, the situation that the impact on the commercial power is large and the normal work of the commercial power is influenced when all the rectifier modules are started at the same time may occur. That is, the normal operation of the dc power supply system may be affected by the way of restarting the N rectifier modules in the rectifier module in the prior art.
Disclosure of Invention
The embodiment of the invention provides a control method, a control device and a control device of a direct current power supply system, and aims to solve the problem that the normal work of the direct current power supply system is possibly influenced by the mode of restarting N rectifying modules in a rectifying module in the prior art.
In a first aspect, an embodiment of the present invention provides a method for controlling an uninterruptible power supply rectifier module, including:
acquiring an overload coefficient of a rectifying module; the overload coefficients are used for representing the overload capacity of the N rectifying modules;
when the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system;
determining the minimum number of rectifier modules which can be started simultaneously after the mains supply is restored according to the electrical parameters and the overload coefficient, and recording the minimum number as M; wherein N is more than or equal to M, and M, N are positive integers;
determining the number K of equivalent rectification modules according to the parameters of the battery;
judging whether to start L rectifying modules simultaneously according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules; wherein L is more than or equal to 1 and less than or equal to M;
the remaining rectifier modules are started.
In a possible implementation manner, determining whether to start up L rectifier modules simultaneously according to the number K of equivalent rectifier modules and the minimum number M of rectifier modules includes:
when the battery input current is less than zero, if the minimum number M of the rectifier modules is judged to be greater than the number K of the equivalent rectifier modules, starting L rectifier modules at the same time, wherein L is M-K; otherwise, 1 rectifier module is started independently.
In one possible implementation, the method further includes:
and when the input current of the battery is more than or equal to zero, if the battery has a rectification module which is not started, controlling a rectification module to start after every set time interval.
In a possible implementation manner, before determining whether to start up L rectifier modules simultaneously according to the number K of equivalent rectifier modules and the minimum number M of rectifier modules, the method further includes:
judging whether the SOC of the battery is more than or equal to a set value;
and when the SOC of the battery is larger than or equal to a set value and the number K of the equivalent rectifying modules is larger than the minimum number M of the rectifying modules, executing the operation of judging whether to start the L rectifying modules simultaneously according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules.
In one possible implementation, the method further includes:
and when the SOC of the battery is more than or equal to a set value and the number K of the equivalent rectifying modules is less than or equal to the minimum number M of the rectifying modules, starting the M rectifying modules simultaneously.
In a possible implementation manner, after the M rectifier modules are started simultaneously, the method further includes:
and controlling a rectification module to start after each interval of set time.
In a possible implementation manner, before controlling a rectifier module to start after every set time, the method further includes:
detecting the state of the started rectifier module;
and when one or more rectifier modules generate overcurrent protection, controlling the corresponding number of rectifier modules to start.
In one possible implementation, the method further includes:
and when the SOC of the battery is smaller than a set value, controlling the N rectifying modules to start simultaneously.
In a second aspect, an embodiment of the present invention provides a control device for a rectifier module of an uninterruptible power supply, including:
the acquisition module is used for acquiring the overload coefficient of the rectification module; the overload coefficients are used for representing the overload capacity of the N rectifier modules, and acquiring the electrical parameters of the direct current power supply system when the commercial power is not supplied and the battery is supplied with power;
the determining module is used for determining the minimum number of the rectifying modules which can be started simultaneously after the power supply of the mains supply is recovered according to the electrical parameters and the overload coefficient, and recording the minimum number as M; wherein N is larger than or equal to M, M, N are positive integers, and the number K of the equivalent rectifying modules is determined according to the parameters of the battery;
the control module is used for judging whether to start the L rectifying modules at the same time according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules; wherein L is more than or equal to 1 and less than or equal to M, and the rest of the rectification modules are started.
In a third aspect, an embodiment of the present invention provides a terminal, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the control method according to the first aspect or any possible implementation manner of the first aspect when executing the computer program.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored, and the computer program, when executed by a processor, implements the steps of the control method according to the first aspect or any one of the possible implementations of the first aspect.
The embodiment of the invention provides a control method, a terminal and a storage medium of an uninterruptible power supply rectifier module. When the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system, determining the minimum number of the rectifier modules which can be started simultaneously after the commercial power is restored to supply power according to the electrical parameters and the overload coefficient, and recording the minimum number as M, wherein N is larger than or equal to M, and M, N are positive integers. Determining the number K of the equivalent rectifying modules according to the parameters of the battery, judging whether to start L rectifying modules simultaneously or not according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules, wherein L is more than or equal to 1 and less than or equal to M, and starting the rest rectifying modules. The embodiment of the invention calculates the number of the rectifier modules which can be started simultaneously according to the electrical parameters of the direct current power supply system, so that the number of the started rectifier modules can meet the system operation requirement, the starting time of the rectifier modules can be shortened, the impact of the rectifier modules on commercial power is avoided, and the working efficiency and the reliability of the direct current power supply system can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a dc power supply system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating an implementation of a method for controlling a rectifier module of an uninterruptible power supply according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an implementation of a method for controlling a rectifier module of an ups according to another embodiment of the present invention;
fig. 4 is a flowchart illustrating an implementation of a method for controlling a rectifier module of an ups according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a control device of a rectifier module of an uninterruptible power supply according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
With the high-speed development of cloud computing services, the scale of a data center is larger and larger, the requirement on power supply reliability is higher and higher, and in order to fully guarantee the safe and continuous operation of the services, the data center is provided with a UPS (uninterrupted power supply) as a backup guarantee power supply and as an important energy storage device of an emergency standby system. The UPS includes components such as a battery and a plurality of rectifier modules. When the mains supply is normal, the rectification module in the UPS is used for supplying power to the load and charging the battery. When the commercial power supply is abnormal, the battery supplies power to the IT equipment so as to ensure that the data center operates uninterruptedly. After the mains supply is recovered, the N rectifying modules are sequentially started to supply power to the load, the phenomenon that when a single rectifying module is started, the output impact current is too large, the rectifying module outputs overcurrent protection, the rest rectifying modules are started at intervals in sequence, and finally all the rectifying modules are possibly subjected to overcurrent protection and cannot be started normally can occur. The mode of simultaneously starting the N rectifier modules is adopted to supply power to the load, so that the situation that the impact on the commercial power is large and the normal work of the commercial power is influenced when all the rectifier modules are simultaneously started may occur. The embodiment of the invention aims to provide a method for accurately controlling the starting process of a rectification module so as to realize the stable operation of a system when the mains supply of a data center is recovered.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
Fig. 2 is a flowchart illustrating an implementation of a method for controlling a rectifier module of an uninterruptible power supply according to an embodiment of the present invention. As shown in fig. 2, the method comprises the following steps:
s201, acquiring an overload coefficient of a rectification module; the overload factor is used for representing the overload capacity of the N rectifying modules.
And S202, when the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system.
S203, determining the minimum number of rectifier modules which can be started simultaneously after the power supply of the commercial power is restored according to the electrical parameters and the overload coefficients, and recording the minimum number as M; wherein N is more than or equal to M, and M, N are positive integers.
And S204, determining the number K of the equivalent rectifying modules according to the parameters of the battery.
After the mains supply is recovered, the battery does not stop discharging immediately under the condition of sufficient electric quantity, and the battery is used as an equivalent rectifying module to supply power to the load.
In one possible implementation, obtaining the electrical parameter of the dc power supply system includes: one or more of a remaining discharge time of the battery, a battery charging power, and a state of charge (SOC) of the battery are obtained.
In one possible implementation, determining the minimum number M of rectifier modules that can be activated simultaneously from the electrical parameter and the overload factor comprises:
calculating the sum of the load power and the battery charging power;
when the rectifier modules are not started, determining the minimum number M of the rectifier modules which can be started simultaneously according to the ratio of the sum value to the rated output power of the rectifier modules;
otherwise, calculating the actual output power of the started rectifier module, determining the required power according to the difference value of the sum and the actual output power, and determining the minimum number M of the rectifier modules which can be started simultaneously according to the ratio of the required power to the rated output power of the rectifier modules.
In one possible implementation, determining the second number M of equivalent rectifier modules according to the remaining discharge time of the battery includes:
wherein M is a second number of equivalent rectifier modules; t1 is the remaining discharge time of the battery; t2 is the starting time of the rectifier module in the current limiting mode; t3 is a set time interval between two adjacent starting of the rectifier modules in the time-sharing starting mode.
S205, judging whether to start L rectifying modules simultaneously according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules; wherein L is more than or equal to 1 and less than or equal to M.
And S206, starting the residual rectifying module.
In the embodiment of the invention, the overload coefficients of the rectifier modules are obtained and used for representing the overload capacity of the N rectifier modules. When the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system, determining the minimum number of the rectifier modules which can be started simultaneously after the commercial power is restored to supply power according to the electrical parameters and the overload coefficient, and recording the minimum number as M, wherein N is larger than or equal to M, and M, N are positive integers. Determining the number K of the equivalent rectifying modules according to the parameters of the battery, judging whether to start L rectifying modules simultaneously or not according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules, wherein L is more than or equal to 1 and less than or equal to M, and starting the rest rectifying modules. The number of the rectifier modules which can be started simultaneously is calculated according to the electrical parameters of the direct current power supply system, so that the number of the started rectifier modules can meet the system operation requirement, the starting time of the rectifier modules can be shortened, the rectifier modules are prevented from impacting the commercial power, and the working efficiency and the reliability of the direct current power supply system can be improved.
In a possible implementation manner, judging whether to start up L rectifier modules simultaneously according to the number K of equivalent rectifier modules and the minimum number M of rectifier modules includes:
when the battery input current is less than zero, if the minimum number M of the rectifier modules is judged to be greater than the number K of the equivalent rectifier modules, starting L rectifier modules at the same time, wherein L is M-K; otherwise, 1 rectifier module is started independently.
When 1 rectifier module is independently started, one rectifier module is controlled to be started preferentially according to the current limiting mode. When K is larger than M, the residual discharge time of the battery can ensure that M rectifier modules are started in sequence, and at the moment, one rectifier module is controlled to be started preferentially to reduce current fluctuation of the data center and ensure stable operation of the rectifier modules.
In one possible implementation, the method further includes: when the input current of the battery is more than or equal to zero, if the rectifier module which is not started exists, one rectifier module is controlled to be started after the set time interval. And controlling a rectifying module to start after every interval of set time according to a time-sharing starting mode. When the input current of the battery is larger than or equal to zero, the battery is in a charging state and is not discharged any more. In the process, the rectification modules are started in a time-sharing mode until all the rectification modules are started, so that system fluctuation can be reduced.
In a possible implementation manner, before determining whether to start up L rectifier modules simultaneously according to the number K of equivalent rectifier modules and the minimum number M of rectifier modules, the method further includes:
judging whether the SOC of the battery is more than or equal to a set value;
and when the SOC of the battery is more than or equal to the set value and the number K of the equivalent rectifying modules is more than the minimum number M of the rectifying modules, executing the operation of judging whether to start the L rectifying modules simultaneously according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules.
When the SOC of the battery is larger than or equal to a set value and K is larger than M, the residual discharge time of the battery can ensure that M rectifier modules are started in sequence. However, when a new load is added in the starting process, the condition that K is smaller than or equal to M is determined in real time, and therefore, the control strategy of the rectification module needs to be adjusted according to the actual operation condition in the subsequent process.
Fig. 3 is a flowchart illustrating an implementation of a method for controlling a rectifier module of an uninterruptible power supply according to an embodiment of the present invention. As shown in fig. 3, the method comprises the following steps:
s201, acquiring overload coefficients of the rectifier modules, wherein the overload coefficients are used for representing overload capacities of the N rectifier modules.
And S202, when the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system.
S203, determining the minimum number of rectifier modules which can be started simultaneously after the power supply of the commercial power is restored according to the electrical parameters and the overload coefficients, and recording the minimum number as M; wherein N is more than or equal to M, and M, N are positive integers.
And S204, determining the number K of the equivalent rectifying modules according to the parameters of the battery.
S301, judging whether the SOC of the battery is smaller than a set value, and executing the step S302 when the SOC of the battery is smaller than the set value, otherwise, executing the step S303.
And S302, controlling all the rectifier modules to start.
S303, judging whether the number K is less than or equal to the first number M, and executing the step S304 when the number K is less than or equal to M, otherwise executing the step S305.
And S304, controlling the M rectifying modules to start preferentially according to the time-sharing starting mode.
And S305, controlling a rectifying module to start preferentially according to the current limiting mode.
S306, updating the minimum number M of rectifier modules that can be started simultaneously and the number K of equivalent rectifier modules, which are respectively denoted as M 'and K', calculating a difference L obtained by subtracting K 'from M', determining whether the difference L is greater than 0, and if so, executing step S307 to make i equal to 1; otherwise, step S308 is executed to set i equal to L.
S309, judging whether the input current of the battery is larger than zero, if so, executing the step S310, otherwise, executing the step S311.
In a possible implementation manner, after controlling a rectifier module to be activated preferentially according to the current limiting mode, the method further includes: detecting an input current of a battery; when the input current is larger than zero, if the rectifier module which is not started exists, one rectifier module is controlled to be started after a set time interval, and the rectifier module is controlled to be started according to rated output current.
When the input current of the battery is larger than zero, the battery is indicated to be in a charging state and is not discharged any more, and the battery is started according to the rated output current when a new rectifier module is controlled to be started, so that the power utilization requirement of the load is met.
And S310, starting i rectifying modules according to the number of the rectifying modules determined in the step S306, and controlling the output current of the rectifying modules according to a current limiting control mode.
And S311, starting i rectifying modules according to the number of the rectifying modules determined in the step S306, and controlling the rectifying modules to output current according to the battery uniform charging control mode.
And S312, judging whether the rectifier modules are not started, and repeatedly executing the step S311 when all the rectifier modules are not started, otherwise, executing the step S313, namely ending the starting control of the rectifier modules.
In the embodiment of the invention, the overload coefficients of the rectifier modules are obtained and used for representing the overload capacity of the N rectifier modules. When the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system, determining the minimum number of the rectifier modules which can be started simultaneously after the commercial power is restored to supply power according to the electrical parameters and the overload coefficient, and recording the minimum number as M, wherein N is larger than or equal to M, and M, N are positive integers. And determining the number K of the equivalent rectifying modules according to the parameters of the battery, and judging whether to start L rectifying modules at the same time according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules, wherein L is more than or equal to 1 and less than or equal to M. When the battery input current is less than zero, if the minimum number M of the rectifier modules is judged to be greater than the number K of the equivalent rectifier modules, starting L rectifier modules at the same time, wherein L is M-K; otherwise, 1 rectifier module is started independently. The number of the rectifier modules which can be started simultaneously is calculated according to the electrical parameters of the direct current power supply system, so that the number of the started rectifier modules can meet the system operation requirement, the starting time of the rectifier modules can be shortened, the rectifier modules are prevented from impacting the commercial power, and the working efficiency and the reliability of the direct current power supply system can be improved.
In one possible implementation, the method further includes: and when the SOC of the battery is more than or equal to a set value and the number K of the equivalent rectifying modules is less than or equal to the minimum number M of the rectifying modules, starting the M rectifying modules simultaneously.
In a possible implementation manner, after the M rectifier modules are started simultaneously, the method further includes: and controlling a rectification module to start after each interval of set time.
And controlling the M rectifying modules to start preferentially according to the time-sharing starting mode. When K is less than or equal to M, if a newly-increased load exists in the process, the residual discharge time of the battery cannot ensure that M rectifier modules are started and completed in sequence, therefore, when K is less than or equal to M, M rectifier modules are controlled to be started at the same time in a priority mode, and the condition that the starting number of the rectifier modules cannot meet the power supply requirement of the load under the condition that the newly-increased load exists is avoided.
Optionally, after each interval is set, the plurality of rectifier modules are controlled to be started simultaneously, so that the system balance is adjusted quickly. The specific number of the plurality of rectifier modules is determined according to the power of the newly added load. The larger the newly added load power, the larger the number.
In a possible implementation manner, before controlling a rectifier module to start after every set time, the method further includes:
detecting the state of the started rectifier module;
and when one or more rectifier modules generate overcurrent protection, controlling the corresponding number of rectifier modules to start.
When there is a module with overcurrent protection in the M started rectifier modules, the power requirement of the system load cannot be met, and therefore, the corresponding rectifier modules need to be controlled to be started according to the number of the modules with overcurrent protection.
In one possible implementation, the method further includes: and when the SOC of the battery is smaller than a set value, controlling the N rectifying modules to start simultaneously.
The SOC of the battery is smaller than a set value, which indicates that the battery is low in electric quantity, and at the moment, the power consumption requirement of the data center cannot be met when the mains supply fails, so that the risk of power failure of the data center exists. When the SOC of the battery is smaller than a set value, the rectifier module in the UPS is required to control the battery to supply power to the battery, namely, the battery is used as a load of the rectifier module to control all the rectifier modules to start, and the impact force on the commercial power is small.
Fig. 4 is a flowchart illustrating an implementation of a method for controlling a rectifier module of an uninterruptible power supply according to an embodiment of the present invention. As shown in fig. 4, the method comprises the following steps:
s201, acquiring overload coefficients of the rectifier modules, wherein the overload coefficients are used for representing overload capacities of the N rectifier modules.
And S202, when the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system.
S203, determining the minimum number of rectifier modules which can be started simultaneously after the power supply of the commercial power is restored according to the electrical parameters and the overload coefficients, and recording the minimum number as M; wherein N is more than or equal to M, and M, N are positive integers.
And S204, determining the number K of the equivalent rectifying modules according to the parameters of the battery.
S301, judging whether the SOC of the battery is smaller than a set value, and executing the step S302 when the SOC of the battery is smaller than the set value, otherwise, executing the step S303.
And S302, controlling all the rectifier modules to start.
S303, judging whether the number K is less than or equal to the first number M, and executing the step S304 when the number K is less than or equal to M, otherwise executing the step S305.
And S304, controlling the M rectifying modules to start preferentially according to the time-sharing starting mode.
And S305, controlling a rectifying module to start preferentially according to the current limiting mode.
And S105, controlling the M rectifying modules to start preferentially according to the time-sharing starting mode, and then executing the step S201.
And S106, controlling a rectifying module to start preferentially according to the current limiting mode.
S401, judging whether a rectifier module has overcurrent protection, and executing the step S402 when the rectifier module with overcurrent protection exists, otherwise, executing the step S403.
And S402, starting the rectifier modules with the number corresponding to the overcurrent protection.
And S403, controlling one or more rectification modules to start after the interval setting time.
S404, judging whether the rectifier modules are not started, and repeatedly executing the step S403 when all the rectifier modules are not started, otherwise, executing the step S405, namely ending the starting control of the rectifier modules.
In one possible implementation, the current limiting mode includes: the output current of the rectifier module is controlled from zero to the rated current, namely, the fluctuation of the current is slowed down, and the rigidity of the system steady state is reduced.
In the embodiment of the invention, the overload coefficients of the rectifier modules are obtained and used for representing the overload capacity of the N rectifier modules. When the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system, determining the minimum number of the rectifier modules which can be started simultaneously after the commercial power is restored to supply power according to the electrical parameters and the overload coefficient, and recording the minimum number as M, wherein N is larger than or equal to M, and M, N are positive integers. And determining the number K of the equivalent rectifying modules according to the parameters of the battery, and judging whether to start L rectifying modules at the same time according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules, wherein L is more than or equal to 1 and less than or equal to M. And when the SOC of the battery is more than or equal to a set value and the number K of the equivalent rectifying modules is less than or equal to the minimum number M of the rectifying modules, starting the M rectifying modules simultaneously. And controlling a rectifying module to start after every set time interval. The number of the rectifier modules which can be started simultaneously is calculated according to the electrical parameters of the direct current power supply system, so that the number of the started rectifier modules can meet the system operation requirement, the starting time of the rectifier modules can be shortened, the rectifier modules are prevented from impacting the commercial power, and the working efficiency and the reliability of the direct current power supply system can be improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The following are embodiments of the apparatus of the invention, reference being made to the corresponding method embodiments described above for details which are not described in detail therein.
Fig. 5 is a schematic structural diagram of a control device of an uninterruptible power supply rectifier module according to an embodiment of the present invention, and for convenience of description, only portions related to the embodiment of the present invention are shown, and detailed descriptions are as follows:
as shown in fig. 5, a control device for a rectifier module of an uninterruptible power supply includes: an acquisition module 501, a determination module 502 and a control module 503.
An obtaining module 501, configured to obtain an overload coefficient of a rectifying module; the overload coefficient is used for representing the overload capacity of the N rectifier modules, and when the commercial power is not supplied and the battery is supplied with power, the electric parameters of the direct current power supply system are obtained.
A determining module 502, configured to determine, according to the electrical parameter and the overload coefficient, a minimum number of rectifier modules that can be started at the same time after the power supply is restored, and record the minimum number as M; wherein N is larger than or equal to M, M, N are positive integers, and the number K of the equivalent rectifying modules is determined according to the parameters of the battery.
The control module 503 is configured to determine whether to start the L rectifier modules simultaneously according to the number K of equivalent rectifier modules and the minimum number M of rectifier modules; wherein L is more than or equal to 1 and less than or equal to M, and the rest of the rectification modules are started.
In the embodiment of the invention, the overload coefficients of the rectifier modules are obtained and used for representing the overload capacity of the N rectifier modules. When the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system, determining the minimum number of the rectifier modules which can be started simultaneously after the commercial power is restored to supply power according to the electrical parameters and the overload coefficient, and recording the minimum number as M, wherein N is larger than or equal to M, and M, N are positive integers. Determining the number K of the equivalent rectifying modules according to the parameters of the battery, judging whether to start L rectifying modules simultaneously or not according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules, wherein L is more than or equal to 1 and less than or equal to M, and starting the rest rectifying modules. The embodiment of the invention calculates the number of the rectifier modules which can be started simultaneously according to the electrical parameters of the direct current power supply system, so that the number of the started rectifier modules can meet the system operation requirement, the starting time of the rectifier modules can be shortened, the impact of the rectifier modules on commercial power is avoided, and the working efficiency and the reliability of the direct current power supply system can be improved.
Fig. 6 is a schematic diagram of a terminal according to an embodiment of the present invention. As shown in fig. 6, the terminal 6 of this embodiment includes: a processor 60, a memory 61 and a computer program 62 stored in said memory 61 and executable on said processor 60. The processor 60 executes the computer program 62 to implement the steps of the above-mentioned embodiments of the method for controlling the rectifier module of the ups. Alternatively, the processor 60, when executing the computer program 62, implements the functions of each module/unit in the above-mentioned device embodiments, for example, the functions of the modules 501 to 503 shown in fig. 5.
Illustratively, the computer program 62 may be partitioned into one or more modules/units that are stored in the memory 61 and executed by the processor 60 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 62 in the terminal 6. For example, the computer program 62 may be divided into the modules/units 41 to 43 shown in fig. 4.
The terminal 6 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal 6 may include, but is not limited to, a processor 60, a memory 61. It will be appreciated by those skilled in the art that fig. 6 is only an example of a terminal 6 and does not constitute a limitation of the terminal 6, and that it may comprise more or less components than those shown, or some components may be combined, or different components, for example the terminal may further comprise input output devices, network access devices, buses, etc.
The Processor 60 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may be an internal storage unit of the terminal 6, such as a hard disk or a memory of the terminal 6. The memory 61 may also be an external storage device of the terminal 6, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) and the like provided on the terminal 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the terminal 6. The memory 61 is used for storing the computer program and other programs and data required by the terminal. The memory 61 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the above-described apparatus/terminal embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the above embodiments of the present invention may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the above embodiments of the method for controlling the rectifier module of the uninterruptible power supply. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A control method of an uninterruptible power supply rectifier module is characterized by comprising the following steps:
acquiring an overload coefficient of a rectifying module; the overload coefficients are used for representing the overload capacity of the N rectifying modules;
when the commercial power is not supplied and the battery is supplied with power, acquiring the electrical parameters of the direct current power supply system;
determining the minimum number of rectifier modules which can be started simultaneously after the mains supply is restored according to the electrical parameters and the overload coefficient, and recording the minimum number as M; wherein N is more than or equal to M, and M, N are positive integers;
determining the number K of equivalent rectification modules according to the parameters of the battery;
judging whether to start L rectifying modules simultaneously according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules; wherein L is more than or equal to 1 and less than or equal to M;
the remaining rectifier modules are started.
2. The control method according to claim 1, wherein judging whether to start up L rectifier modules simultaneously according to the number K of the equivalent rectifier modules and the minimum number M of the rectifier modules comprises:
when the battery input current is less than zero, if the minimum number M of the rectifier modules is judged to be greater than the number K of the equivalent rectifier modules, starting L rectifier modules at the same time, wherein L is M-K; otherwise, 1 rectifier module is started independently.
3. The control method according to claim 2, characterized by further comprising:
and when the input current of the battery is more than or equal to zero, if the battery has a rectification module which is not started, controlling a rectification module to start after every set time interval.
4. The control method according to any one of claims 1 to 3, before determining whether to start up L rectifier modules simultaneously according to the number K of equivalent rectifier modules and the minimum number M of rectifier modules, further comprising:
judging whether the SOC of the battery is more than or equal to a set value;
and when the SOC of the battery is larger than or equal to a set value and the number K of the equivalent rectifying modules is larger than the minimum number M of the rectifying modules, executing the operation of judging whether to start the L rectifying modules simultaneously according to the number K of the equivalent rectifying modules and the minimum number M of the rectifying modules.
5. The control method according to claim 4, characterized by further comprising:
and when the SOC of the battery is more than or equal to a set value and the number K of the equivalent rectifying modules is less than or equal to the minimum number M of the rectifying modules, starting the M rectifying modules simultaneously.
6. The control method of claim 5, wherein after starting the M rectifier modules simultaneously, further comprising:
and controlling a rectification module to start after each interval of set time.
7. The control method of claim 6, wherein before controlling a rectifier module to start after a set time interval, the method further comprises:
detecting the state of the started rectifier module;
and when one or more rectifier modules generate overcurrent protection, controlling the corresponding number of rectifier modules to start.
8. The control method according to claim 5, 6 or 7, characterized by further comprising:
and when the SOC of the battery is smaller than a set value, controlling the N rectifying modules to start simultaneously.
9. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the control method according to any of the preceding claims 1 to 8 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the control method according to any one of claims 1 to 8 above.
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