CN113890168B - Switching power supply control method, device, equipment and storage medium - Google Patents

Switching power supply control method, device, equipment and storage medium Download PDF

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Publication number
CN113890168B
CN113890168B CN202111041794.2A CN202111041794A CN113890168B CN 113890168 B CN113890168 B CN 113890168B CN 202111041794 A CN202111041794 A CN 202111041794A CN 113890168 B CN113890168 B CN 113890168B
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power supply
switching power
value
main switching
preset
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CN113890168A (en
Inventor
白晓钢
王胜军
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Powerin Semiconductor Co ltd
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Powerin Semiconductor Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/248—UPS systems or standby or emergency generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Human Computer Interaction (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

The application relates to a switching power supply control method, a device, equipment and a storage medium, which are applied to the field of switching power supplies, wherein the method comprises the following steps: receiving output information of a main switching power supply, wherein the output information comprises output voltage of the main switching power supply; calculating a difference value between the output voltage and a preset first standard voltage value and setting the difference value as a voltage fluctuation value; and if the voltage fluctuation value is larger than a preset fault value, switching the main switching power supply in the power supply line to the standby switching power supply so that the standby switching power supply replaces the main switching power supply to continuously supply power to the rear-end load equipment. The technical effect that this application had is: when the main switching power supply is stopped or the output is obviously abnormal due to faults, the main switching power supply in the power supply circuit is automatically switched to the standby switching power supply, the possibility that the rear-end load equipment cannot work normally due to the faults of the main switching power supply is reduced, and therefore the stability of the switching power supply is improved.

Description

Switching power supply control method, device, equipment and storage medium
Technical Field
The present disclosure relates to the field of switching power supplies, and in particular, to a switching power supply control method, device, apparatus, and storage medium.
Background
The switching power supply, also called switching power supply and switching converter, is a high-frequency electric energy conversion device and is a kind of power supply. The function is to convert a voltage of one level into a voltage or current required by the user terminal through different types of architectures. The input of the switching power supply is mostly an ac power supply (e.g. mains supply) or a dc power supply, while the output is mostly a device requiring a dc power supply, such as a personal computer, and the switching power supply performs voltage and current conversion between the two.
In carrying out the present application, the inventors have found that at least the following problems exist in this technology: when the output of the switching power supply is abnormal or the shutdown occurs due to failure in the working process, the load equipment at the rear end of the switching power supply can not work normally; the switching power supply has poor power supply stability.
Disclosure of Invention
In order to help to improve the power supply stability of a switching power supply, the application provides a switching power supply control method, a device, equipment and a storage medium.
In a first aspect, the present application provides a switching power supply control method, which adopts the following technical scheme: the power supply circuit is provided with a main switching power supply and a standby switching power supply, and the main switching power supply and the standby switching power supply can be replaced with each other; the method comprises the following steps:
receiving output information of a main switching power supply, wherein the output information comprises output voltage of the main switching power supply;
calculating a difference value between the output voltage and a preset first standard voltage value and setting the difference value as a voltage fluctuation value;
if the voltage fluctuation value is larger than a preset fault value, acquiring input information of the main switching power supply, wherein the input information comprises input voltage of the main switching power supply;
and if the input voltage is not zero, switching the main switching power supply in the power supply line to the standby switching power supply so that the standby switching power supply replaces the main switching power supply to continuously supply power to the rear-end load equipment.
Through the technical scheme, in a normal state, the power supply circuit supplies power to the load equipment at the rear end through the main switching power supply, and the standby switching power supply is in an off-line standby state; when the voltage fluctuation value of the output voltage of the main switching power supply is larger than the obvious abnormal condition of the preset fault value, whether the power supply is powered off or not is judged by checking the input voltage of the main switching power supply, if the power supply is in a normal state, the current main switching power supply is judged to be failed, and the main switching power supply in the power supply circuit is automatically switched to the standby switching power supply, so that the standby switching power supply can replace the main switching power supply to continuously supply power for the load equipment, the possibility that the rear-end load equipment cannot work normally due to the failure of the main switching power supply is reduced, and the stability of the switching power supply is improved.
Preferably, after calculating a difference between the output voltage and a preset first standard voltage value and setting the difference as a voltage fluctuation value, the method further includes:
if the voltage fluctuation value is larger than a preset warning value and not larger than the fault value, the warning value is smaller than the fault value; acquiring environment information of the main switching power supply, wherein the environment information comprises an actually measured temperature value inside the main switching power supply;
and if the measured temperature value is larger than the preset standard temperature value, switching the main switching power supply in the power supply circuit to the standby switching power supply.
According to the technical scheme, if the voltage fluctuation value of the main switching power supply is detected to be larger than the warning value and smaller than the fault value, the main switching power supply is judged to have possible fault conditions, then the measured temperature inside the main switching power supply is obtained, if the measured temperature is abnormal, the main switching power supply is judged to have fault conditions, and the main switching power supply in the power supply line is switched to the standby switching power supply; therefore, the effect of switching in advance when the output of the main switching power supply is abnormal is achieved, and the power supply stability of the switching power supply is further improved; meanwhile, when the main switching power supply is found to have faults, whether the main switching power supply has faults or not is checked by means of detecting the temperature, and the possibility of error switching of a power supply circuit due to short-time output fluctuation of the main switching power supply is reduced.
Preferably, after the obtaining the environmental information of the main switching power supply, the environmental information includes an actually measured temperature value inside the main switching power supply, the method further includes:
if the measured temperature value is not greater than the preset standard temperature value, starting timing and recording a first time value for which the voltage fluctuation value is greater than the preset warning value;
and when the first time value is larger than a preset first standard value, switching the main switching power supply in the power supply circuit to the standby switching power supply.
Through the technical scheme, if the voltage fluctuation value of the main switching power supply is larger than the warning value and smaller than the fault value, but the temperature of the main switching power supply is still in a normal state at the moment, when the voltage fluctuation value is larger than a first time value which is sustained by the preset warning value and is larger than a first standard value, the main switching power supply in the power supply circuit is automatically switched to the standby switching power supply, the possibility that the rear-end load equipment is difficult to work normally or damage due to long-time abnormal output of the main switching power supply is reduced, and therefore the stability of the switching power supply is further improved.
Preferably, the switching the primary switching power supply in the power supply line to the backup switching power supply includes:
acquiring state information of the main switching power supply, wherein the state information comprises an actually measured internal resistance value of the main switching power supply;
and if the actually measured internal resistance value is larger than a preset standard internal resistance value, switching the main switching power supply in the power supply circuit to the standby switching power supply.
Through the technical scheme, whether the main switching power supply has faults or not is checked by detecting the temperature and the internal resistance of the main switching power supply, the main switching power supply is judged to have faults only when the temperature and the internal resistance are abnormal, and the main switching power supply in the power supply circuit is switched to the standby switching power supply; the possibility of error switching of the power supply line caused by the abnormality of the actual detection temperature of the main switching power supply due to the influence of the surrounding environment is reduced, and the stability of the switching power supply is further improved.
Preferably, after the switching of the primary switching power supply to the backup switching power supply in the power supply line, the method further includes:
starting timing and recording a second time value which is sustained after switching to the standby switch power supply;
when the second time value is larger than a preset second standard value, acquiring the environment information and the state information of the main switching power supply again;
if the measured temperature value corresponding to the acquired environmental information is not greater than the preset standard temperature value, and the measured internal resistance value corresponding to the state information is not greater than the preset standard internal resistance value; switching the standby switch power supply in the power supply line back to the main switch power supply; otherwise, the early warning information is sent to a background operation and maintenance center.
According to the technical scheme, after the power supply circuit switches the main switching power supply to the standby switching power supply, starting timing, and when the duration of the switching state reaches a preset second standard value, checking whether the main switching power supply has a fault or not by checking whether the temperature and the internal resistance of the main switching power supply are normal or not, if so, switching the standby switching power supply in the power supply circuit back to the main switching power supply, so that the effect of automatic checking and repairing when the circuit is in error switching is achieved; otherwise, judging that the main switching power supply does have a fault condition, and sending early warning information to a background operation and maintenance center so as to remind a background operation and maintenance personnel to overhaul the main switching power supply with the fault condition in time; and after the secondary check confirms that the main switching power supply has a fault, the setting of early warning information is sent to the background operation and maintenance center, so that the possibility of false alarm is reduced.
Preferably, the method further comprises: receiving sound monitoring information of a main switching power supply, wherein the sound monitoring information comprises actual measurement decibel values;
when the received actual measurement decibel value is larger than a preset standard decibel value, recording an abnormal time point corresponding to the event of which the actual measurement decibel value is larger than the preset standard decibel value into an abnormal information database;
the sending the early warning information to the background operation and maintenance center comprises the following steps:
inquiring the latest abnormal time point in the current abnormal information database;
calculating a corresponding actual time difference value between the abnormal time point and the current time point;
and if the actual time difference value is smaller than the preset marked time difference value, sending prompt information and early warning information related to the abnormal decibel value to a background operation and maintenance center.
Through the technical scheme, the sound information of the main switching power supply is monitored, when the main switching power supply emits sound due to the burning or cracking of components, abnormal sound is recorded, and the latest noise information in a certain time range is sent to the background operation and maintenance center when early warning information is sent, so that operation and maintenance personnel can quickly know that the switching power supply has the burning condition of the components according to the decibel value fed back by the background operation and maintenance center, and further, overhaul or maintenance is quickly carried out, and convenience and efficiency of the operation and maintenance personnel when the switching power supply is overhauled are improved.
Preferably, the method further comprises:
when the triggering times corresponding to the switching of the main switching power supply to the standby switching power supply in the power supply line in the preset triggering period is larger than a preset reasonable triggering value, acquiring input information of the main switching power supply, wherein the input information comprises an actual voltage value of the input main switching power supply;
recording an actual voltage value corresponding to the input information in a preset monitoring period and an abnormal time value corresponding to the fact that the actual voltage value exceeds a preset standard voltage value;
calculating the actual duty ratio of the abnormal time value in the monitoring time value corresponding to the preset monitoring period; and if the actual duty ratio is larger than the preset standard duty ratio, transmitting the recorded actual voltage value corresponding to the input information in the preset monitoring period to a background operation and maintenance center.
Through the technical scheme, when the switching times of the power supply circuit in the preset period is larger than the preset reasonable trigger value, the voltage information of the input end of the main switching power supply in the preset detection period is recorded, if the actual voltage value exceeds the abnormal time value corresponding to the preset standard voltage value, the input voltage of the main switching power supply is judged to be abnormal if the duty ratio in the detection period is larger than the preset standard duty ratio, and the recorded actual voltage value corresponding to the input information in the preset monitoring period is sent to the background operation and maintenance center, so that the probability that the main switching power supply is difficult to acquire the damage reason of the main switching power supply due to the poor quality of the input voltage and further the main switching power supply cannot be overhauled or maintained in a targeted mode is reduced, and the maintenance effect of the main switching power supply is improved.
In a second aspect, the present application provides a switching power supply control device, which adopts the following technical scheme: the power supply circuit is provided with a main switching power supply and a standby switching power supply, and the main switching power supply and the standby switching power supply can be replaced with each other; the device comprises:
the output information receiving module is used for receiving the output information of the main switching power supply, wherein the output information comprises the output voltage of the main switching power supply;
the voltage fluctuation calculation module is used for calculating a difference value between the output voltage and a preset first standard voltage value and setting the difference value as a voltage fluctuation value;
and the power supply line switching module is used for switching the main switching power supply in the power supply line to the standby switching power supply if the voltage fluctuation value is larger than a preset fault value, so that the standby switching power supply replaces the main switching power supply to continuously supply power to the rear-end load equipment.
In a third aspect, the present application provides a computer device, which adopts the following technical scheme: comprising a memory and a processor, said memory having stored thereon a computer program capable of being loaded by the processor and executing any of the switching power supply control methods described above.
In a fourth aspect, the present application provides a computer readable storage medium, which adopts the following technical solutions: a computer program capable of being loaded by a processor and executing any one of the switching power supply control methods described above is stored.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the main switching power supply is stopped or the output of the main switching power supply is obviously abnormal due to faults, the main switching power supply in the power supply line is automatically switched to the standby switching power supply, so that the standby switching power supply can replace the main switching power supply to continuously supply power to load equipment, the possibility that the rear-end load equipment cannot work normally due to the faults of the main switching power supply is reduced, and the stability of the switching power supply is improved;
2. monitoring sound information of the main switching power supply, recording abnormal sounds when the main switching power supply emits sounds due to the burning or cracking of components, and sending the latest noise information in a certain time range to a background operation and maintenance center when sending early warning information, so that operation and maintenance personnel can quickly learn that the switching power supply has the burning condition of the components according to the decibel value fed back by the background operation and maintenance center, and further quickly carry out maintenance or maintenance, thereby improving the convenience and efficiency of the operation and maintenance personnel when the switching power supply is overhauled.
Drawings
Fig. 1 is a schematic diagram of a power supply circuit in an embodiment of the present application.
Fig. 2 is a flowchart of a switching power supply control method in an embodiment of the present application.
FIG. 3 is a schematic diagram of mains voltage condition monitoring in one embodiment of the present application.
Fig. 4 is a block diagram of a switching power supply control device according to an embodiment of the present application.
Fig. 5 is a block diagram of a switching power supply control device according to another embodiment of the present application.
Fig. 6 is a block diagram of a switching power supply control device according to another embodiment of the present application.
Fig. 7 is a block diagram of a switching power supply control device according to another embodiment of the present application.
Fig. 8 is a block diagram of a switching power supply control device according to another embodiment of the present application.
Reference numerals: 410. an output information receiving module; 420. a voltage fluctuation calculation module; 430. a power supply line switching module; 440. a temperature information detection module; 450. the early warning information sending module; 460. a sound information monitoring module; 470. an abnormal voltage monitoring module.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-8.
The embodiment of the application discloses a switching power supply control method; as shown in fig. 1, the method is based on a switching power supply circuit, the input end of the switching power supply is connected with a mains supply, the output end of the switching power supply is connected with a back-end load device, a main switching power supply and a standby switching power supply are arranged in the power supply circuit, and can be independently operated to convert the mains supply and supply power for the back-end load, and in a normal operating state, the main switching power supply is in an operating state and the standby switching power supply is in an off-line standby state; the working states of the main switching power supply and the standby switching power supply are controlled by the control center, and the control center can send out control instructions to switch the working states of the main switching power supply and the standby switching power supply.
As shown in fig. 2, the method comprises the steps of:
s10, receiving output information of the main switching power supply.
The output information comprises the output voltage of the main switching power supply; specifically, the output voltage can be detected by the voltage sensor and then transmitted back to the control center, so that the control center can monitor the output voltage of the switching power supply in real time.
S20, calculating a difference value between the output voltage and a preset first standard voltage value and setting the difference value as a voltage fluctuation value.
Specifically, the first standard voltage value may be set according to the rated output voltage of the switching power supply, for example, the rated output voltage of the switching power supply is 24V, and then the staff may set the first standard voltage value to 24V in advance, where the voltage fluctuation value is the difference between the actual output voltage and the rated output voltage of the main switching power supply. It should be noted that the voltage fluctuation value takes the absolute value of the difference value.
S30, if the voltage fluctuation value is larger than a preset fault value, acquiring input information of the main switching power supply.
The input information comprises input voltage of the main switching power supply; specifically, the fault value may be preset by a worker, for example, the fault value is set to half of the rated voltage, and if the voltage fluctuation value is greater than the fault value, the input voltage of the main switching power supply is obtained, and the input voltage may be detected by the voltage sensor and then transmitted back to the control center.
And S40, if the input voltage is not zero, switching the main switching power supply in the power supply line to the standby switching power supply.
Specifically, the input voltage is not zero, which indicates that the mains supply is not powered off, so that the situation that the main switching power supply is not powered off due to the mains supply is eliminated, then the control center judges that the current main switching power supply is abnormal in output or has stopped due to the occurrence of a fault condition, and at the moment, the main switching power supply in the power supply circuit is switched to the standby switching power supply, so that the standby switching power supply can replace the main switching power supply to continuously supply power to the rear-end load equipment; in the actual operation process, the ATS automatic transfer switch or other electric control transfer switches can be utilized to realize the switching between the main switching power supply and the standby switching power supply; the possibility that the back-end load equipment cannot work normally due to the fact that the main switching power supply breaks down is reduced, and therefore stability of the switching power supply is improved. Before switching, the setting of the input voltage of the main switching power supply is checked, so that the possibility that the main switching power supply is not output due to the power failure of the mains supply is reduced, and then the control center misjudges the fault of the main switching power supply. It should be noted that: the control center adopts a power supply mode except the commercial power, such as power supply of a storage battery and the like; so that when the mains supply is powered off, the control center can continuously finish the operation of detecting whether the output of the mains supply is normal or not; the commercial power can automatically supply power to the storage battery after recovery, so that the storage battery can stably supply power to the control center for a long time.
In one embodiment, considering that when the main switching power supply fails, the situation that the temperature is abnormally increased due to abnormal components is often accompanied, and the voltage fluctuation value is obviously lower than the rated voltage but is smaller than a preset failure value, the control center cannot judge the failure of the main switching power supply in time, and the main switching power supply in the power supply line is switched to the standby switching power supply; when judging the state of the main switching power supply, a warning value can be introduced, wherein the warning value is preset by a worker and is smaller than a fault value; for example: the preset fault value is 12V, and the warning value may be set to 6V. If the voltage fluctuation value is larger than the preset early warning value and smaller than the preset fault value, namely the voltage fluctuation value is between 6V and 12V, the environment information of the main switch power supply is obtained, wherein the environment information comprises the actually measured temperature value inside the main switch power supply, and the actually measured temperature value can be detected by a temperature sensor arranged inside the switch power supply and then returned to the control center.
If the detected measured temperature value is larger than the preset standard temperature value, the fault condition of the main switching power supply is judged, and the main switching power supply in the power supply circuit is switched to the standby switching power supply, so that the control center can timely switch the power supply circuit when the main switching power supply is abnormal, and the stability of the switching power supply is further improved.
If the detected measured temperature value is not greater than the preset standard temperature value, starting timing and recording a first time value for which the voltage fluctuation value is greater than the preset warning value, wherein the first time value corresponding to the voltage fluctuation value is continuously maintained between 6V and 12V based on the example; when the first time value is larger than a preset first standard value, switching the main switching power supply in the power supply circuit to a standby switching power supply; therefore, the possibility that the back-end load equipment cannot work normally due to long-time abnormality of the input voltage caused by the fact that the output voltage of the main switching power supply is maintained between a warning value and a fault value for a long time is reduced, and the power supply stability of the switching power supply is further improved; meanwhile, by setting the first standard value, the possibility that the control center switches the power supply line by mistake due to short-term output fluctuation of the switching power supply is reduced, and the probability of misoperation of the control center is reduced.
In one embodiment, considering that when the control center checks whether the main switching power supply fails by detecting the measured temperature value of the main switching power supply, the fault heating of components of other devices around the main switching power supply or the abnormal heat dissipation of the interior of the device may occur, so that the measured temperature value of the switching power supply is abnormal, and further the control center misjudges and switches the situation by mistake; when the detected measured temperature value is larger than a preset standard temperature value, the control center can acquire state information of the main switching power supply, wherein the state information comprises an actually measured internal resistance value of the main switching power supply, and the actually measured internal resistance value can be acquired according to ohm law after the voltage and the loop current of the two ends of the main switching power supply are detected; if the measured internal resistance value is larger than the preset standard internal resistance value, judging that the main switching power supply fails and switching the main switching power supply in the power supply circuit to the standby switching power supply; that is, only in the case where abnormality occurs in temperature and abnormality occurs in internal resistance at the same time, the failure of the main switching power supply is determined; the possibility that the external environment factors cause abnormal temperature of the switching power supply and then cause the control center to misjudge the faults of the main switching power supply is reduced, and therefore the probability that the control center misjudges and switches by mistake is further reduced.
In one embodiment, consider the situation that the control center may misjudge that the switching power supply has an abnormal situation, and switch the main switching power supply in the power supply line to the standby switching power supply; after the control center switches the main switching power supply in the power supply line to the standby switching power supply, the control center can synchronously start timing and record a second time value which is continued after switching to the standby switching power supply, and when the second time value is larger than a preset second standard value, the control center acquires the measured temperature value and the measured internal resistance value of the main switching power supply again; if the obtained measured temperature value is not greater than the preset standard temperature value, and the measured internal resistance value is not greater than the preset standard internal resistance value; the current main switching power supply is judged to be in a normal state, and the standby switching power supply in the power supply line is switched back to the main switching power supply, so that the effect of automatically correcting the error switching condition is achieved, and the reliability of a control center is improved; otherwise, the obtained detection result again cannot meet the condition that the measured temperature value is not larger than the preset standard temperature value, the measured internal resistance value is not larger than the preset standard internal resistance value, and early warning information is sent to the background operation and maintenance center, so that an operation and maintenance person can know that the current main switching power supply fails according to the information of the background operation and maintenance center, and overhaul or maintain the main switching power supply with the failure condition in time.
In one embodiment, the switching power supply control method may further include: receiving sound monitoring information of a main switching power supply, wherein the sound monitoring information comprises actual measurement decibel values; the sound monitoring information can be detected by a sound sensor arranged in the main switching power supply and then transmitted back to the control center; the control center compares the received decibel value with a preset standard decibel value, and records an abnormal time point corresponding to the event when the actual measured decibel value is larger than the preset standard decibel value to an abnormal information database when the actual measured decibel value is larger than the preset standard decibel value; for example, if the measured db value received at the time of 52 minutes 32 seconds at the time of 5/8/11/2021 is greater than the preset standard db value, the time point "2021 at the time of 5/8/11/50 minutes 32 seconds" is recorded in the anomaly database. After the control center determines that the main switching power supply fails, the step of sending the early warning information to the background operation and maintenance center can also be as follows: firstly, inquiring the latest abnormal time point in an abnormal information database, calculating the corresponding actual time difference between the latest abnormal time point and the current time point, and based on the previous example, if the current time is 2021, 5, 8, 11, 52 minutes and 52 seconds, the actual time difference is 140 seconds; if the actual time difference is smaller than the preset standard time difference, prompt information and early warning information related to the decibel value abnormality are sent to a background operation and maintenance center. For example, while sending the early warning information, prompt information such as "the situation of abnormal sound before the failure of the main switching power supply" is sent to the background operation and maintenance center, so that a worker can know the possible failure situation of the switching power supply in advance according to the acquired prompt information, and carry out targeted maintenance during maintenance.
It should be noted that, when the internal components of the switching power supply burn or break, abnormal sounds are often associated with the switching power supply, and a certain time is required for the rising of the ambient temperature after the switching power supply is abnormal, that is, a certain time interval exists between the abnormal temperature of the switching power supply and the abnormal sound emitted by the switching power supply; meanwhile, the control center detects that the switching power supply is abnormal in temperature and has a time interval from sending the early warning information to detecting whether a second time value is needed for false alarm or not, so that a standard time difference value is needed to be set for opposite flushing the two time intervals, and abnormal sounds before the switching power supply is in failure can be effectively and accurately fed back to the background operation and maintenance center.
In one embodiment, as shown in fig. 3, the switching power supply control method may further include: when the triggering times corresponding to the switching of the main switching power supply to the standby switching power supply in the power supply line in the preset triggering period is larger than a preset reasonable triggering value, acquiring input information of the main switching power supply, wherein the input information comprises an actual voltage value of the input main switching power supply; for example, the preset period is 24 hours, the preset reasonable trigger value is 2 times, and when the trigger frequency corresponding to the switching of the main switching power supply to the standby switching power supply reaches 3 times within 24 hours, the actual voltage value of the input end of the main switching power supply is obtained; recording the obtained actual voltage value and an abnormal time value corresponding to the actual voltage value exceeding a preset standard voltage value, and then calculating the actual duty ratio of the abnormal time value in a monitoring time value corresponding to a preset monitoring period; for example: the preset monitoring period is 5 minutes, the accumulated result of the abnormal time values is 3 minutes, and the actual proportion of the abnormal voltage condition in the preset detection period is 60 percent; if the calculated actual duty ratio is larger than the preset standard duty ratio, the recorded actual voltage value corresponding to the input information in the preset monitoring period is sent to the background operation and maintenance center, so that background operation and maintenance personnel can know the quality condition of the mains voltage according to the actual voltage value fed back to the background operation and maintenance center, the personnel can analyze the reason of the fault of the switching power supply, and the situation that the quality of the voltage is poor is improved in a related manner, so that the fault rate of the switching power supply is reduced, and the stability of the switching power supply is further improved.
The implementation principle of the embodiment of the application is as follows: the method comprises the steps that a main switching power supply and a standby switching power supply are arranged in a power supply circuit, when the main switching power supply is judged to have faults by a control center, the main switching power supply in the power supply circuit is timely switched to the standby switching power supply, and therefore the standby switching power supply can supply power to rear-end load equipment stably; meanwhile, after the failure of the main switching power supply is determined, early warning information is sent to a background operation and maintenance center, so that background operation and maintenance personnel can know the failure condition of the main switching power supply and timely carry out overhaul or maintenance; the standby switch power supply can replace the main switch power supply to stably supply power to the back-end load equipment when the main switch power supply fails, so that the possibility that the back-end load equipment cannot work normally due to the failure of the main switch power supply is reduced, and the stability of the switch power supply is improved.
Based on the method, the embodiment of the application also discloses a switching power supply control device.
As shown in fig. 4, a main switching power supply and a standby switching power supply are arranged in the power supply circuit, and the main switching power supply and the standby switching power supply can be replaced with each other; the device comprises the following modules:
an output information receiving module 410, configured to receive output information of the main switching power supply, where the output information includes an output voltage of the main switching power supply;
a voltage fluctuation calculating module 420 for calculating a difference between the output voltage and a preset first standard voltage value and setting the difference as a voltage fluctuation value;
the power supply line switching module 430 is configured to switch the main switching power supply in the power supply line to the standby switching power supply if the voltage fluctuation value is greater than the preset fault value, so that the standby switching power supply replaces the main switching power supply to continuously supply power to the back-end load device.
In one embodiment, as shown in fig. 5, the switching power supply control device further includes a temperature information detection module 440, configured to, if the voltage fluctuation value is greater than a preset warning value, make the warning value smaller than the fault value; acquiring environment information of the main switching power supply, wherein the environment information comprises an actually measured temperature value in the main switching power supply; and if the measured temperature value is larger than the preset standard temperature value, switching the main switching power supply in the power supply circuit to the standby switching power supply.
In one embodiment, the temperature information detection module 440 is further configured to start timing and record a first time value for which the voltage fluctuation value is greater than the preset warning value if the measured temperature value is not greater than the preset standard temperature value; and when the first time value is larger than a preset first standard value, switching the main switching power supply in the power supply line to the standby switching power supply.
In one embodiment, the temperature information detection module 440 is further configured to obtain status information of the main switching power supply, where the status information includes an actually measured internal resistance value of the main switching power supply; and if the measured internal resistance value is larger than the preset standard internal resistance value, switching the main switching power supply in the power supply line to the standby switching power supply.
In one embodiment, as shown in fig. 6, the switching power supply control device further includes an early warning information sending module 450, configured to start timing and record a second time value that is sustained after switching to the standby switching power supply; when the second time value is larger than a preset second standard value, acquiring the environment information and the state information of the main switching power supply again; if the measured temperature value corresponding to the acquired environmental information is not greater than the preset standard temperature value, and the measured internal resistance value corresponding to the state information is not greater than the preset standard internal resistance value; switching the standby switch power supply in the power supply line back to the main switch power supply; otherwise, the early warning information is sent to a background operation and maintenance center.
In one embodiment, as shown in fig. 7, the switching power supply control device further includes a sound information monitoring module 460, configured to receive sound monitoring information of the main switching power supply, where the sound monitoring information includes an actually measured decibel value; when the received actually measured decibel value is larger than a preset standard decibel value, recording an abnormal time point corresponding to the event with the actually measured decibel value larger than the preset standard decibel value to an abnormal information database; the early warning information sending module 450 is further configured to query the latest abnormal time point in the current abnormal information database; calculating a corresponding actual time difference value between the abnormal time point and the current time point; if the actual time difference is smaller than the preset marked time difference, prompt information and early warning information related to the decibel value abnormality are sent to a background operation and maintenance center.
In one embodiment, as shown in fig. 8, the switching power supply control device further includes an abnormal voltage monitoring module 470, configured to obtain input information of the main switching power supply when the number of triggers corresponding to the main switching power supply being switched to the standby switching power supply in the power supply line in a preset trigger period is greater than a preset reasonable trigger value, where the input information includes an actual voltage value of the input main switching power supply; recording an actual voltage value corresponding to input information in a preset monitoring period and an abnormal time value corresponding to the fact that the actual voltage value exceeds a preset standard voltage value; calculating the actual duty ratio of the abnormal time value in the monitoring time value corresponding to the preset monitoring period; and if the actual duty ratio is larger than the preset standard duty ratio, transmitting the recorded actual voltage value corresponding to the input information in the preset monitoring period to the background operation and maintenance center.
The embodiment of the application also discloses a computer device.
Specifically, the computer device includes a memory and a processor, and the memory stores a computer program that can be loaded by the processor and execute the switching power supply control method described above.
The embodiment of the application also discloses a computer readable storage medium.
Specifically, the computer-readable storage medium storing a computer program capable of being loaded by a processor and executing the switching power supply control method as described above includes, for example: a U-disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RandomAccessMemory, RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.

Claims (9)

1. A control method of a switching power supply is characterized in that a main switching power supply and a standby switching power supply are arranged in a power supply circuit, and the main switching power supply and the standby switching power supply can be replaced with each other;
the method comprises the following steps:
receiving output information of a main switching power supply, wherein the output information comprises output voltage of the main switching power supply;
calculating a difference value between the output voltage and a preset first standard voltage value and setting the difference value as a voltage fluctuation value;
if the voltage fluctuation value is larger than a preset fault value, acquiring input information of the main switching power supply, wherein the input information comprises input voltage of the main switching power supply;
if the input voltage is not zero, switching the main switching power supply in the power supply line to a standby switching power supply so that the standby switching power supply replaces the main switching power supply to continuously supply power for the rear-end load equipment;
after calculating the difference between the output voltage and the preset first standard voltage value and setting the difference as the voltage fluctuation value, the method further comprises:
if the voltage fluctuation value is larger than a preset warning value and not larger than the fault value, the warning value is smaller than the fault value; acquiring environment information of the main switching power supply, wherein the environment information comprises an actually measured temperature value inside the main switching power supply;
and if the measured temperature value is larger than the preset standard temperature value, switching the main switching power supply in the power supply circuit to the standby switching power supply.
2. The method of claim 1, further comprising, after the obtaining the environmental information of the primary switching power supply, the environmental information including a measured temperature value inside the primary switching power supply:
if the measured temperature value is not greater than the preset standard temperature value, starting timing and recording a first time value for which the voltage fluctuation value is greater than the preset warning value;
and when the first time value is larger than a preset first standard value, switching the main switching power supply in the power supply circuit to the standby switching power supply.
3. The method of claim 1, wherein switching the active switching power supply to the standby switching power supply in the power line comprises:
acquiring state information of the main switching power supply, wherein the state information comprises an actually measured internal resistance value of the main switching power supply;
and if the actually measured internal resistance value is larger than a preset standard internal resistance value, switching the main switching power supply in the power supply circuit to the standby switching power supply.
4. A method according to claim 3, further comprising, after said switching the primary switching power supply in the power supply line to the backup switching power supply:
starting timing and recording a second time value which is sustained after switching to the standby switch power supply;
when the second time value is larger than a preset second standard value, acquiring the environment information and the state information of the main switching power supply again;
if the measured temperature value corresponding to the acquired environmental information is not greater than the preset standard temperature value, and the measured internal resistance value corresponding to the state information is not greater than the preset standard internal resistance value; switching the standby switch power supply in the power supply line back to the main switch power supply; otherwise, the early warning information is sent to a background operation and maintenance center.
5. The method according to claim 4, wherein the method further comprises:
receiving sound monitoring information of a main switching power supply, wherein the sound monitoring information comprises actual measurement decibel values;
when the received actual measurement decibel value is larger than a preset standard decibel value, recording an abnormal time point corresponding to the event of which the actual measurement decibel value is larger than the preset standard decibel value into an abnormal information database;
the sending the early warning information to the background operation and maintenance center comprises the following steps:
inquiring the latest abnormal time point in the current abnormal information database;
calculating a corresponding actual time difference value between the abnormal time point and the current time point;
and if the actual time difference value is smaller than the preset marked time difference value, sending prompt information and early warning information related to the abnormal decibel value to a background operation and maintenance center.
6. The method according to claim 4, wherein the method further comprises:
when the triggering times corresponding to the switching of the main switching power supply to the standby switching power supply in the power supply line in the preset triggering period is larger than a preset reasonable triggering value, acquiring input information of the main switching power supply, wherein the input information comprises an actual voltage value of the input main switching power supply;
recording an actual voltage value corresponding to the input information in a preset monitoring period and an abnormal time value corresponding to the fact that the actual voltage value exceeds a preset standard voltage value;
calculating the actual duty ratio of the abnormal time value in the monitoring time value corresponding to the preset monitoring period; and if the actual duty ratio is larger than the preset standard duty ratio, transmitting the recorded actual voltage value corresponding to the input information in the preset monitoring period to a background operation and maintenance center.
7. A switching power supply control device is characterized in that a main switching power supply and a standby switching power supply are arranged in a power supply circuit, and the main switching power supply and the standby switching power supply can be replaced with each other; the device comprises:
an output information receiving module (410) for receiving output information of the main switching power supply, the output information including an output voltage of the main switching power supply;
a voltage fluctuation calculating module (420) for calculating a difference between the output voltage and a preset first standard voltage value and setting the difference as a voltage fluctuation value;
the power supply line switching module (430) is used for switching the main switching power supply in the power supply line to the standby switching power supply if the voltage fluctuation value is larger than a preset fault value, so that the standby switching power supply replaces the main switching power supply to continuously supply power to the rear-end load equipment;
after calculating the difference between the output voltage and the preset first standard voltage value and setting the difference as the voltage fluctuation value, the method further comprises:
if the voltage fluctuation value is larger than a preset warning value and not larger than the fault value, the warning value is smaller than the fault value; acquiring environment information of the main switching power supply, wherein the environment information comprises an actually measured temperature value inside the main switching power supply;
and if the measured temperature value is larger than the preset standard temperature value, switching the main switching power supply in the power supply circuit to the standby switching power supply.
8. A computer device comprising a memory and a processor, the memory having stored thereon a computer program capable of being loaded by the processor and performing the method according to any of claims 1 to 6.
9. A computer readable storage medium, characterized in that a computer program is stored which can be loaded by a processor and which performs the method according to any of claims 1 to 6.
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