CN113394873A - Power supply control method, device and equipment and readable storage medium - Google Patents
Power supply control method, device and equipment and readable storage medium Download PDFInfo
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- CN113394873A CN113394873A CN202110651234.2A CN202110651234A CN113394873A CN 113394873 A CN113394873 A CN 113394873A CN 202110651234 A CN202110651234 A CN 202110651234A CN 113394873 A CN113394873 A CN 113394873A
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- 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
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Abstract
The invention discloses a power supply control method, a device, equipment and a readable storage medium, wherein the method comprises the following steps: acquiring externally supplied electric energy; detecting a power supply mode of external power supply according to the electric energy; if the power supply mode is the power grid power supply mode, utilizing external power supply to perform bus slow start, and utilizing the external power supply to perform work after the bus slow start is completed; if the power supply mode is the generator power supply mode, utilizing a battery to supply power to perform bus slow start, and utilizing external power to perform work after the bus slow start is finished; the invention utilizes the electric energy of external power supply to detect the external power supply condition of the power supply of the generator, so that the power supply control equipment of UPS equipment can utilize the battery to supply power to complete the buffering of the bus when detecting the power supply of the generator, and utilizes the external power supply to enter the commercial power state for working, thereby enabling the UPS equipment to utilize the power supply of the generator to normally work, ensuring the reliability of the UPS equipment and improving the user experience.
Description
Technical Field
The present invention relates to the field of power supply technologies, and in particular, to a power supply control method, device, and apparatus, and a readable storage medium.
Background
At present, a generator is often used in a usage process of a UPS (Uninterruptible Power System) device, so that the generator is used to externally supply Power to the UPS device when a Power grid is powered off.
In the prior art, when a generator is used for supplying power to the UPS device externally, the UPS device may work abnormally, if the power of the generator is small, the UPS device may work abnormally, and the UPS device entering into work may work in a state of being switched to a battery state when the UPS device is charged with light load and a battery and then is powered off externally. Therefore, how to enable the UPS equipment to detect the external power supply condition of the power supply of the generator so that the UPS equipment can utilize the power supply of the generator to work normally and improve the user experience is a problem which needs to be solved urgently nowadays.
Disclosure of Invention
The invention aims to provide a power supply control method, a power supply control device, power supply equipment and a readable storage medium, so that UPS equipment can detect the external power supply condition of power supply of a generator, the UPS equipment can normally work by using the power supply of the generator, and user experience is improved.
In order to solve the above technical problem, the present invention provides a power supply control method, including:
acquiring externally supplied electric energy;
detecting a power supply mode of the external power supply according to the electric energy; wherein the power supply mode comprises a generator power supply mode or a grid power supply mode;
if the power supply mode is the power grid power supply mode, utilizing the external power supply to carry out bus slow start, and utilizing the external power supply to work after the bus slow start is finished;
if the power supply mode is the power supply mode of the generator, the bus is started slowly by using the power supplied by the battery, and the bus works by using the external power supply after the bus is started slowly.
Optionally, the detecting the power supply mode of the external power supply according to the electric energy includes:
and determining the power supply mode according to the phase-locked frequency corresponding to the electric energy.
Optionally, the determining the power supply mode according to the phase-locked frequency corresponding to the electric energy includes:
determining the power supply mode according to the target frequency change times corresponding to the phase-locked frequency within a first preset time; the target frequency change times are times that the difference between the maximum phase-locked frequency and the minimum phase-locked frequency in a second preset time is greater than a frequency threshold; the first preset time comprises n second preset times, and n is a positive integer greater than or equal to 1.
Optionally, determining the power supply mode according to the target frequency change number corresponding to the phase-locked frequency within a first preset time period includes:
acquiring the target frequency change times within first preset time;
judging whether the target frequency change times is greater than or equal to a first time threshold value or not;
if the current time is greater than or equal to the first time threshold value, determining that the power supply mode is the power supply mode of the generator;
if the target frequency change frequency is smaller than the first frequency threshold, judging whether the target frequency change frequency is smaller than a second frequency threshold; wherein the second nonce threshold is less than the first nonce threshold;
if the current time is less than the second time threshold value, determining that the power supply mode is the power grid power supply mode;
and if the frequency is larger than or equal to the second frequency threshold value, timing again, and executing the step of obtaining the target frequency change frequency within the first preset time.
Optionally, when the power supply mode is the power supply mode of the generator, the external power supply is used for working, including:
controlling a PFC part to carry out power factor correction by utilizing a phase detected by a power supply phase detection frequency of a generator in an out-of-synchronization state; the power supply phase detection frequency of the generator is any frequency in a first frequency range, the power supply phase detection frequency of the power grid is any frequency in a second frequency range, the first frequency range comprises the second frequency range, and the first frequency range is larger than the second frequency range.
Optionally, when the power supply mode is the power supply mode of the generator, the external power supply is used for working, including:
adjusting the PFC loop coefficients of the PFC parts to the power supply values of the generators corresponding to the PFC parts; the PFC loop coefficient comprises a voltage loop coefficient and/or a current loop coefficient, the generator power supply numerical value comprises a generator power supply voltage loop numerical value corresponding to the voltage loop coefficient and/or a generator power supply current loop numerical value corresponding to the current loop coefficient, the generator power supply voltage loop numerical value is smaller than a power grid power supply voltage loop numerical value, and the generator power supply current loop numerical value is smaller than a power grid power supply current loop numerical value.
Optionally, when the power supply mode is the power supply mode of the generator, the external power supply is used for working, including:
in the process of supplying power to a battery and a load, supplying power to the battery according to target charging power; and the target charging power is smaller than the power supply power of the power grid supply battery.
The present invention also provides a power supply control device, including:
the acquisition module is used for acquiring electric energy supplied by the outside;
the detection module is used for detecting a power supply mode of the external power supply according to the electric energy; wherein the power supply mode comprises a generator power supply mode or a grid power supply mode;
the normal slow start module is used for carrying out bus slow start by using the external power supply if the power supply mode is the power grid power supply mode, and carrying out work by using the external power supply after the bus slow start is finished;
and the battery slow starting module is used for utilizing the battery to supply power to carry out bus slow starting if the power supply mode is the power supply mode of the generator, and utilizing the external power supply to work after the bus slow starting is finished.
The present invention also provides a power supply control apparatus, including:
a memory for storing a computer program;
a processor for implementing the steps of the power supply control method as described above when executing the computer program.
Furthermore, the present invention also provides a readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the power supply control method as described above.
The invention provides a power supply control method, which comprises the following steps: acquiring externally supplied electric energy; detecting a power supply mode of external power supply according to the electric energy; wherein the power supply mode comprises a generator power supply mode or a power grid power supply mode; if the power supply mode is the power grid power supply mode, utilizing external power supply to perform bus slow start, and utilizing the external power supply to perform work after the bus slow start is completed; if the power supply mode is the generator power supply mode, utilizing a battery to supply power to perform bus slow start, and utilizing external power to perform work after the bus slow start is finished;
therefore, the invention utilizes the electric energy of external power supply to detect the external power supply condition of the power supply of the generator, so that the power supply control equipment of UPS equipment can utilize the battery to supply power to complete the buffering of the bus when detecting the power supply of the generator, and utilizes the external power supply to enter the commercial power state for working, thereby enabling the UPS equipment to utilize the power supply of the generator to normally work, ensuring the reliability of the UPS equipment and improving the user experience. In addition, the invention also provides a power supply control device, equipment and a readable storage medium, and the power supply control device, the equipment and the readable storage medium also have the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a power supply control method according to an embodiment of the present invention;
fig. 2 is a flowchart of another power supply control method according to an embodiment of the present invention;
fig. 3 is a block diagram of a power supply control device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power supply control device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a power supply control device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, for example, a power supply control device of a UPS device is difficult to detect a power supply mode of external power supply, that is, the power supply control device cannot identify whether the external power supply electric energy is from a power grid or a generator, so that when the generator is used for external power supply of the power supply control device, the power supply control device cannot perform adaptive control adjustment on the power supply of the generator, and thus the power supply control device cannot normally operate; if the power of the generator is small, the UPS device may not normally start up, and the UPS device entering into operation may exit from the boosting operation of the external power supply and switch to the battery mode operation when the UPS device is charged with light load and the battery.
Tests show that the problem that UPS equipment cannot work normally due to power supply of a generator is as follows: when the generator supplies power, the input voltage and frequency of the UPS device are normal, but the input frequency is always in a changed state, and the frequency change rate is high (for example, higher than 2Hz/s), when the probabilistic phase locking is completed, the SCR (Silicon Controlled Rectifier) of the UPS device jumps out of the phase locking completion condition before the bus is buffered, and this phenomenon is repeated, so that the bus cannot be buffered, and the UPS device cannot enter the commercial power state to work, that is, cannot utilize external power supply to work. In view of this, according to the invention, by detecting the power supply mode of the external power supply, the bus is buffered by using the battery power supply when the power supply of the generator is detected, so that the occurrence of the situation that the UPS equipment cannot work normally is reduced, the reliability of the UPS equipment is ensured, and the user experience is improved.
A power supply control method provided in an embodiment of the present invention is described below. Referring to fig. 1, fig. 1 is a flowchart of a power supply control method according to an embodiment of the present invention. The method can comprise the following steps:
step 101: and obtaining the electric energy of external power supply.
The externally-supplied power in this step may be power supplied from outside to a power supply control device (such as a UPS device), such as power supplied by a power grid or power supplied by a generator.
Specifically, for a specific manner in which the power supply control device in this embodiment obtains the external power supply, for example, the UPS device may receive the electric energy output by the power grid or the generator through the external power supply interface, which is the same as or similar to the external power supply method of the power supply control device in the prior art, and this embodiment is not limited in any way.
Step 102: detecting a power supply mode of external power supply according to the electric energy; wherein the power supply mode comprises a generator power supply mode or a power grid power supply mode.
Specifically, the power supply mode in this step may be an external power supply mode adopted by the power supply control device; the power supply mode may be a power grid power supply mode in which a power grid is used to externally supply power to the power supply control device, or a generator power supply mode in which a generator is used to externally supply power to the power supply control device.
It is to be understood that, in this step, the power supply control device may determine the power supply mode of the external power supply by detecting the power of the external power supply. The specific mode of detecting the power supply mode of the external power supply by the power supply control device in the step can be set by a designer according to a practical scene and user requirements, and if the power supply control device can determine the power supply mode of the external power supply by using the phase-locked frequency corresponding to the external power supply electric energy. The power supply control equipment can also determine the power supply mode of external power supply by utilizing the phase locking condition corresponding to the electric energy of the external power supply; the phase locking condition may include a phase locking completed state or a phase locking uncompleted state; for example, in this step, the Power supply control device may determine whether the phase-locking condition changes to a phase-locking completion state within a preset phase-locking time, that is, detect whether the phase-locking of a PFC (Power Factor Correction) component is completed within the preset phase-locking time; if not, determining that the power supply mode of the electric energy is the power supply mode of the generator; and if so, determining that the power supply mode of the electric energy is the power supply mode of the power grid. The power supply control device may determine the power supply mode of the external power supply only by using the phase-locked frequency corresponding to the power of the external power supply. The power supply control equipment can also determine the power supply mode of external power supply by utilizing the phase locking condition and the phase locking frequency corresponding to the electric energy of the external power supply; for example, the power supply control device in this step may determine whether the phase-lock condition changes to a phase-lock completion state within a preset phase-lock time; if not, determining that the power supply mode of the electric energy is the power supply mode of the generator; if so, determining a power supply mode of the external power supply according to the phase-locked frequency corresponding to the electric energy of the external power supply; or the power supply control device in this step may determine the power supply mode of the external power supply according to the phase locking frequency corresponding to the electric energy while determining whether the phase locking condition changes to the phase locking completion state within the preset phase locking time; when the phase locking completion state is not changed within the preset phase locking time, determining that the power supply mode of the electric energy is a power supply mode of the generator; and when the phase locking completion state is changed within the preset phase locking time or the preset phase locking time is not reached, the phase locking frequency is directly utilized to determine the power supply mode of the electric energy. The present embodiment does not limit this as long as the power supply control device can determine the power supply mode of the external power supply by detecting the power of the external power supply.
Correspondingly, in the step, the power supply control device can determine the power supply mode of the external power supply by using the phase-locked frequency and/or the phase-locked condition corresponding to the external power supply when the voltage and the frequency of the external power supply are normal; when the voltage or the frequency of the external power supply electric energy is abnormal, the power supply mode of the electric energy can be directly determined to be the power supply mode of the generator, or the external power supply electric energy is determined to be unavailable.
Step 103: if the power supply mode is the power grid power supply mode, the bus is started slowly by using external power supply, and after the bus is started slowly, the bus works by using the external power supply.
It can be understood that, in this embodiment, the power supply control device may execute the power supply control operation corresponding to the detected power supply mode after detecting the power supply mode of the external power supply, so as to avoid a situation that the power supply control device in the prior art cannot normally operate when the power generator supplies power because the power supply control device only adopts the power supply control operation applicable to the power grid power supply, and ensure that the power supply control device can normally operate by using the external power supplies in different power supply modes.
Specifically, because the frequency of the electric energy of the external power supply is relatively stable when the power grid supplies power, the power supply control equipment can complete bus voltage boosting by utilizing the power grid for power supply. The bus boosting can comprise two processes of buffering and slow starting of the bus; that is to say, in this step, the power supply control device may directly utilize the electric energy of the external power supply (i.e., the power supply of the power grid) to perform bus buffering and bus slow start when detecting that the power supply mode of the external power supply is the power supply mode of the power grid, so as to complete bus boosting, and utilize the external power supply to perform work after the bus slow start is completed (i.e., the bus boosting is completed).
Correspondingly, when the power supply control equipment in the step is in the power supply mode of the power grid, the bus is started slowly by utilizing external power supply, after the bus is started slowly, the specific process of working is carried out by utilizing the external power supply, the specific process can be set by a designer according to a practical scene and user requirements, if the UPS equipment can adopt the mode the same as or similar to the existing external power supply using method, the bus is buffered and started slowly by utilizing the electric energy of the external power supply (namely, power supply of the power grid), and the battery and/or the load are/is powered after the bus is started slowly.
Step 104: if the power supply mode is the power supply mode of the generator, the bus is started slowly by using the power supplied by the battery, and the bus works by using external power supply after the bus is started slowly.
When the generator supplies power, the frequency of the electric energy supplied by the outside is always in a changing state, and the frequency change rate is high (for example, higher than 2Hz/s), so that the power supply control equipment is difficult to buffer and restart the bus by using the power supplied by the power grid, and if the SCR of the UPS equipment possibly fails to reach the condition of finishing phase locking after the bus is buffered, the phenomenon is repeated, so that the bus cannot be buffered, and the UPS equipment cannot work in a mains supply state all the time; therefore, in this step, when detecting that the power supply mode of the external power supply is the power supply mode of the generator, the power supply control device can start from the battery state by using the battery power supply, buffer and restart the bus, and switch to the commercial power boost of the external power supply after the bus is restarted (i.e. the bus is boosted), so that the power supply control device can work by using the external power supply after the bus is restarted, and correspondingly, the PFC component can work in an out-of-synchronization state; when the PFC part works in a synchronous state, the PFC part controls the phase of a boosted PWM wave to be consistent with a voltage sine wave of external power supply, so that the input PF (power factor) value of power supply control equipment (such as UPS equipment) can be ensured to be high, and the current phase of the external power supply is kept consistent with the voltage phase; when the PFC part works in an out-of-synchronization state, the PFC part controls the phase of a boosted PWM wave to be inconsistent with a voltage sine wave of external power supply, the current of the external power supply can be not a sine wave at the moment, and the phase of the current of the external power supply can be inconsistent with the phase of the voltage; that is, when the PFC section operates in an out-of-sync state, the phase of the voltage that the PFC section controls to output may not coincide with the phase of the voltage supplied from the external power supply.
Correspondingly, the specific working mode of the power supply control equipment for working by using external power supply (namely, power supply of the generator) after the bus is started slowly can be set by a designer according to a practical scene and user requirements, for example, the power supply control equipment can perform phase detection by using wider phase detection frequency in the process of working by using external power supply (for example, controlling a PFC (power factor correction) component to work in an out-of-synchronization state), for example, the phase detection frequency in the power supply mode of the generator (namely, the power supply phase detection frequency of the generator) can be greater than the phase detection frequency in the power supply mode of the power grid (namely, the power supply phase detection frequency of the power grid), so that the dynamic response rate of the PFC component can be improved by using higher phase detection frequency; the power supply control device can also reduce PFC loop coefficients (such as voltage loop coefficients and/or current loop coefficients) to reduce the influence on the generator; the power supply control equipment can also reduce the charging power of the battery so as to preferentially ensure the output power of the power supply control equipment to the load; the power supply control equipment can also reduce the sensitivity of voltage detection, frequency detection and/or phase-locked frequency detection of the externally supplied electric energy so as to ensure that the power supply control equipment can safely and stably work by utilizing the power supply of the generator and avoid the power supply control equipment from being switched to a battery state due to the abnormal electric energy caused by the sudden change of the frequency of the generator.
In the embodiment of the invention, the external power supply condition of the power supply of the generator is detected by using the electric energy of the external power supply, so that the power supply control equipment of the UPS equipment can utilize the battery to supply power to complete the buffering of the bus when detecting the power supply of the generator, and the UPS equipment enters the commercial power state to work by using the external power supply, so that the UPS equipment can utilize the power supply of the generator to normally work, the reliability of the UPS equipment is ensured, and the user experience is improved.
Referring to fig. 2, fig. 2 is a flowchart of another power supply control method according to an embodiment of the present invention. The method can comprise the following steps:
step 201: and obtaining the electric energy of external power supply.
The step is similar to step 101, and is not described herein again.
Step 202: determining a power supply mode of external power supply according to the phase-locked frequency corresponding to the electric energy; wherein the power supply mode comprises a generator power supply mode or a power grid power supply mode.
The phase-locked frequency in this step may be a frequency obtained by phase-locking the electric energy supplied from the outside and calculating the frequency, or a frequency obtained by processing (e.g., filtering) the frequency calculated by phase-locking. In this step, the power supply control device (e.g., the UPS device) may detect the power supply mode of the externally supplied electric energy by using the frequency calculated by the phase lock (i.e., the phase lock frequency) to ensure the accuracy of the power supply mode detection.
It should be noted that, as to the specific manner of determining the power supply mode of the external power supply according to the phase-locked frequency corresponding to the electric energy in this step, the specific manner may be set by a designer, for example, the power supply control device may determine the power supply mode of the external power supply according to the phase-locked frequency change within a certain time; for example, the power supply control equipment determines a power supply mode according to the target frequency change times corresponding to the detected phase-locked frequency within the first preset time; the target frequency change times may be times that a difference between a maximum phase-locked frequency and a minimum phase-locked frequency within a second preset time is greater than a frequency threshold; the first preset time includes n second preset times, where n is a positive integer greater than or equal to 1, that is, the power supply control device may calculate a difference between a maximum phase-locked frequency (i.e., a maximum phase-locked frequency) and a minimum phase-locked frequency (i.e., a minimum phase-locked frequency) detected in each of the second preset times, and determine that one target frequency change (i.e., the target frequency change number +1) occurs when the difference is greater than a frequency threshold (e.g., 1Hz), so as to determine the power supply mode of the external power supply by using the number of times of the target frequency change (i.e., the target frequency change number) occurring in the first preset time.
Correspondingly, the power supply control device may also determine the power supply mode of the external power supply according to the detection frequency change number corresponding to the phase-locked frequency within a third preset time (e.g., 10 s); the detected frequency change number may be a number of phase-locked frequency changes reaching a frequency detection threshold (e.g., 0.1Hz), and for example, the detected frequency change number may be a number of times that an absolute value of a difference between two adjacent phase-locked frequencies (i.e., a phase-locked frequency change) in the detected phase-locked frequencies at intervals of a fourth preset time (e.g., 50ms) is greater than or equal to the frequency detection threshold; that is, the power supply control device may determine that the power supply mode is the generator power supply mode when the number of detected frequency changes corresponding to the phase-locked frequency within the third preset time is greater than the threshold number of detection times (e.g., 100 times). The power supply control equipment can also directly utilize the maximum phase-locked frequency change or the average phase-locked frequency change within a certain time to determine the power supply mode of external power supply; the power supply control equipment can also adopt the two or more modes at the same time, and determine the power supply mode of external power supply by using the phase-locked frequency corresponding to the electric energy. The present embodiment does not set any limit to this.
Specifically, the present embodiment does not limit the specific manner of determining the power supply mode according to the target frequency change times corresponding to the detected phase-locked frequency within the first preset time, for example, the power supply control device may obtain the target frequency change times within the first preset time (e.g., 10 s); judging whether the target frequency change times is larger than or equal to a first time threshold (such as 8 times); if the current value is larger than or equal to the first time threshold value, determining that the power supply mode is the power supply mode of the generator; the target frequency change number may be a number of times that a difference between the maximum phase-locked frequency and the minimum phase-locked frequency within a second preset time (e.g., 1s) is greater than a frequency threshold (e.g., 1 Hz).
Correspondingly, when the target frequency change times are smaller than the first time threshold value, the power supply control equipment can directly determine that the power supply mode is the power grid power supply mode; or, whether the target frequency change number is smaller than a second time threshold (for example, 3 times) may be continuously determined, so that when the target frequency change number is smaller than the second time threshold within a first preset time, the power supply mode is determined to be the power supply mode of the power grid; and when the target frequency change times in the second preset time are smaller than the first time threshold and larger than or equal to the second time threshold, re-timing to detect the target frequency change times in a new period of the first preset time. For example, when the power supply control device is a UPS device, the UPS device may start a timer for a first preset time and a second preset time after being powered on for 3s, and calculate whether a difference between a maximum phase-locked frequency and a minimum phase-locked frequency detected within 1s is greater than or equal to 1Hz (i.e., a frequency threshold) when the timer for the second preset time reaches 1 s; when the frequency is larger than or equal to 1Hz, counting the change times of the target frequency by +1, and controlling the timer of the second preset time to count again when the timer of the first preset time does not reach 10 s; when the frequency is less than 1Hz, the counting of the target frequency change times is unchanged, and when the time counted by the timer of the first preset time does not reach 10s, the timer of the second preset time is controlled to be restarted; when the timer of the first preset time reaches 10s, judging whether the counting of the target frequency change times is more than or equal to 8 times; if the number of times is more than or equal to 8, determining that the power supply mode is the power supply mode of the generator; if the number of times of the target frequency change is less than 8, judging whether the number of times of the target frequency change is less than 3; if the number of times is less than 3, determining that the power supply mode is the power grid power supply mode; and if the number of times is more than or equal to 3 and less than 8, restarting the timer for the first preset time and the second preset time and counting the change times of the target frequency, and detecting the count for judging the change times of the target frequency in the next 10 s.
Step 203: if the power supply mode is the power grid power supply mode, the bus is started slowly by using external power supply, and after the bus is started slowly, the bus works by using the external power supply.
Here, this step is similar to step 103, and is not described herein again.
Step 204: if the power supply mode is the power supply mode of the generator, the bus is started slowly by using the power supplied by the battery, and the bus works by using external power supply after the bus is started slowly.
It can be understood that, in this step, the power supply control device can start from the battery state when determining that the power supply mode of the external power supply is the power supply mode of the generator, and switch to the external power supply to boost the commercial power after the bus is started slowly, so that the bus can be switched to boost the commercial power only after being started slowly and phase-locked, and the PFC component can work in an out-of-synchronization state, thereby ensuring that the power supply control device can work in the commercial power state.
Specifically, the specific manner of performing bus slow start by using battery power supply when the power supply control device determines that the power supply mode is the generator power supply mode in this step can be set by a designer, for example, when the determined power supply mode is the grid power supply mode, the power supply control device can be directly switched to battery power supply, and after the bus slow start is completed, the power supply control device is switched to external power supply and works by using the generator power supply; if UPS equipment can detect the power supply mode of external power supply when starting at every turn, when detecting that the power supply mode is the power grid power supply mode, utilize the battery power supply to carry out the generating line and slowly start to after the generating line slowly starts to accomplish (like battery power supply certain time), switch to the external power supply, utilize the generator power supply to carry out the commercial power and step up, continue to carry out follow-up work. When the determined power supply mode is the power grid power supply mode, the power supply control equipment can also detect the slow start condition of the bus; if the slow start condition is a slow start incomplete state, starting by using a battery in the power supply control equipment, and working by using external power supply after the slow start condition is the slow start complete state; if the slow start condition is a slow start completion state, utilizing external power supply to work; that is to say, power supply control equipment (such as UPS equipment) can start from the battery state when detecting that generator power supply mode and bus do not slowly start when accomplishing, switches to the commercial power of outside power supply again and steps up after the bus slowly starts the completion for after the bus slowly starts the completion, power supply control equipment usable outside power supply carries out work.
Correspondingly, when the determined power supply mode is the power supply mode of the generator, the PFC part of the power supply control equipment can work in an out-of-synchronization state in the working process of the power supply control equipment after the bus is restarted; further, the power supply control device can control the PFC component to perform power factor correction by utilizing the phase detected by the power supply phase detection frequency of the generator in an out-of-synchronization state; the power supply phase detection frequency of the generator is any frequency within a first frequency range, and the power supply phase detection frequency of the power grid is any frequency within a second frequency range; the first frequency range comprises the second frequency range and the first frequency range is larger than the second frequency range, i.e. the maximum value of the first frequency range may be larger than the maximum value of the second frequency range and/or the minimum value of the first frequency range may be smaller than the minimum value of the second frequency range. That is, compared with the value range of the phase detection frequency of the power supply of the power grid (i.e., the second frequency range), the value range of the phase detection frequency of the power supply of the generator (i.e., the first frequency range) is wider; the phase detection frequency of the power supply of the generator can be the phase detection frequency in the power supply mode of the generator, and the phase detection frequency of the power supply of the power grid can be the phase detection frequency in the power supply mode of the power grid. For example, after the determined power supply mode is the generator power supply mode, the power supply control device may increase the phase detection frequency of the PFC component to increase the dynamic response rate of the PFC component; the power supply control device may also decrease the phase detection frequency of the PFC section after the determined power supply mode is the generator power supply mode, to decrease the sensitivity of the detection of the phase-locked frequency.
Further, when the determined power supply mode is the power supply mode of the generator, the power supply control equipment adjusts the PFC loop coefficients of the PFC part to the power supply values of the corresponding generators in the working process after the bus is started slowly; the PFC loop coefficient comprises a voltage loop coefficient and/or a current loop coefficient, the generator power supply numerical value comprises a generator power supply voltage loop numerical value corresponding to the voltage loop coefficient and/or a generator power supply current loop numerical value corresponding to the current loop coefficient, the generator power supply voltage loop numerical value is smaller than a power grid power supply voltage loop numerical value, and the generator power supply current loop numerical value is smaller than a power grid power supply current loop numerical value. Specifically, the generator power supply voltage loop value and the generator power supply current loop value may be values of a voltage loop coefficient and a current loop coefficient in a generator power supply mode, respectively, the grid power supply voltage loop value and the grid power supply current loop value may be values of a voltage loop coefficient and a current loop coefficient in a grid power supply mode, respectively, and the power supply control device may reduce a PFC loop coefficient (such as a voltage loop coefficient and/or a current loop coefficient) of the PFC component when the determined power supply mode is the generator power supply mode, so as to weaken an influence on the generator.
Further, when the determined power supply mode is the generator power supply mode, the power supply control device can adopt the target charging power to supply power to the battery of the power supply control device in the working process after the bus is started slowly and supply power to the battery and the load so as to preferentially ensure the output power of the power supply control device to the load; the target charging power can be smaller than the battery charging power corresponding to the power grid power supply mode (namely, the power grid power supply battery charging power); that is, compared with the charging power used by the power supply control device to supply power to the battery and the load by using the power grid, the power supply control device may use a smaller charging power (i.e., a target charging power) to supply power to the battery and the load by using the generator to supply power to the battery and the load, so as to preferentially ensure the output power of the power supply control device to the load. For example, when the determined power supply mode is the generator power supply mode, if the battery and the load need to be powered, the battery may be powered according to the lowest charging power (i.e., the target charging power) to increase the output power to the load as much as possible.
Furthermore, when the determined power supply mode is the generator power supply mode, the power supply control equipment can reduce the sensitivity of voltage detection, frequency detection and/or phase-locked frequency detection of the electric energy supplied to the external power supply in the working process after the bus is started slowly, so that the power supply control equipment can work safely and stably by using the generator power supply. For example, when the determined power supply mode is the generator power supply mode, the UPS device may detect whether the voltage of the externally supplied power is within a target voltage range; if so, switching to work by using the power supply of a battery in the power supply control equipment; the target voltage range may include a voltage range corresponding to the power grid supply mode, and a maximum voltage value of the target voltage range is greater than a maximum voltage value of the voltage range corresponding to the power grid supply mode and/or a minimum voltage value of the target voltage range is less than a minimum voltage value of the voltage range corresponding to the power grid supply mode. Correspondingly, when the determined power supply mode is the generator power supply mode, the UPS device may further detect whether the frequency of the externally supplied electric energy is within a target frequency range, and detect whether the phase-locked frequency of the externally supplied electric energy is within a target phase-locked frequency range; the target frequency range can include a frequency range corresponding to a power grid power supply mode, and the maximum frequency value of the target frequency range is greater than the maximum frequency value of the frequency range corresponding to the power grid power supply mode and/or the minimum frequency value of the target frequency range is less than the minimum frequency value of the frequency range corresponding to the power grid power supply mode; the target phase-locked frequency range may include a phase-locked frequency range corresponding to the grid power supply mode, and a maximum phase-locked frequency value of the target phase-locked frequency range is greater than a maximum phase-locked frequency value of the phase-locked frequency range corresponding to the grid power supply mode and/or a minimum phase-locked frequency value of the target phase-locked frequency range is less than a minimum phase-locked frequency value of the phase-locked frequency range corresponding to the grid power supply mode.
In the embodiment of the invention, the power supply mode of external power supply is determined according to the phase-locked frequency corresponding to the electric energy, the frequency obtained by phase-locked calculation can be utilized, and the detection accuracy of the external power supply condition of the power supply of the generator is improved; and if the power supply mode is the generator power supply mode, the bus is slowly started by using the battery power supply when the generator power supply is detected, the condition that the UPS equipment cannot normally work is avoided, the reliability of the UPS equipment is ensured, and the user experience is improved.
Corresponding to the above method embodiment, the embodiment of the present invention further provides a power supply control device, and the power supply control device described below and the power supply control method described above may be referred to in correspondence with each other.
Referring to fig. 3, fig. 3 is a block diagram of a power supply control device according to an embodiment of the present invention. The apparatus may include:
the acquisition module 10 is used for acquiring electric energy supplied by the outside;
the detection module 20 is used for detecting the power supply mode of external power supply according to the electric energy; wherein the power supply mode comprises a generator power supply mode or a power grid power supply mode;
the normal slow start module 30 is used for carrying out bus slow start by using external power supply if the power supply mode is the power grid power supply mode, and carrying out work by using the external power supply after the bus slow start is finished;
and the battery slow start module 40 is used for carrying out bus slow start by utilizing battery power supply if the power supply mode is the generator power supply mode, and carrying out work by utilizing external power supply after the bus slow start is finished.
Optionally, the detection module 20 may include:
and the frequency detection submodule is used for determining a power supply mode according to the phase-locked frequency corresponding to the electric energy.
Optionally, the frequency detection submodule may be specifically configured to determine the power supply mode according to a target frequency change number corresponding to the phase-locked frequency within a first preset time; the target frequency change times are times that the difference between the maximum phase-locked frequency and the minimum phase-locked frequency in a second preset time is greater than a frequency threshold; the first preset time comprises n second preset times, and n is a positive integer greater than or equal to 1.
Optionally, the frequency detection sub-module may include:
the frequency acquiring unit is used for acquiring the target frequency change frequency within first preset time;
a first count judgment unit configured to judge whether the number of times of change of the target frequency is greater than or equal to a first count threshold;
the first determining unit is used for determining that the power supply mode is the power supply mode of the generator if the first time threshold value is larger than or equal to the first time threshold value;
a second frequency judging unit, configured to judge whether the target frequency change frequency is smaller than a second frequency threshold if the target frequency change frequency is smaller than the first frequency threshold; wherein the second decimal threshold is less than the first decimal threshold;
the second determining unit is used for determining that the power supply mode is the power supply mode of the power grid if the second number of times is smaller than the second secondary number threshold;
and the restarting timing unit is used for timing again and sending a starting signal to the frequency acquisition unit if the frequency is greater than or equal to the second frequency threshold value.
Optionally, when the power supply mode is the generator power supply mode, the battery slow-start module 40 may include:
the phase detection submodule is used for controlling the PFC part to carry out power factor correction by utilizing the phase detected by the phase detection frequency of the power supply of the generator in an out-of-synchronization state in the working process of utilizing external power supply; the power supply phase detection frequency of the generator is any frequency within a first frequency range, the power supply phase detection frequency of the power grid is any frequency within a second frequency range, the first frequency range comprises the second frequency range, and the first frequency range is larger than the second frequency range.
Optionally, when the power supply mode is the generator power supply mode, the battery slow-start module 40 may include:
the coefficient adjusting submodule is used for adjusting the PFC loop coefficient of the PFC part to a power supply value of each corresponding generator in the working process of utilizing external power supply; the PFC loop coefficient comprises a voltage loop coefficient and/or a current loop coefficient, the generator power supply numerical value comprises a generator power supply voltage loop numerical value corresponding to the voltage loop coefficient and/or a generator power supply current loop numerical value corresponding to the current loop coefficient, the generator power supply voltage loop numerical value is smaller than a power grid power supply voltage loop numerical value, and the generator power supply current loop numerical value is smaller than a power grid power supply current loop numerical value.
Optionally, when the power supply mode is the generator power supply mode, the battery slow-start module 40 may include: the method comprises the following steps:
the battery charging submodule is used for supplying power to the battery according to the target charging power in the process of supplying power to the battery and the load; and the target charging power is smaller than the power supply power of the power grid power supply battery.
In this embodiment, the detection module 20 detects the external power supply condition of the power supplied by the generator by using the electric energy of the external power supply, so that the power supply control device of the UPS device can complete the buffering of the bus by using the battery power supply through the battery slow start module 40 when detecting that the power is supplied by the generator, and enter the commercial power state to work by using the external power supply, so that the UPS device can normally work by using the power supplied by the generator, thereby ensuring the reliability of the UPS device and improving the user experience.
Corresponding to the above method embodiment, an embodiment of the present invention further provides a power supply control device, and a power supply control device described below and a power supply control method described above may be referred to in correspondence with each other.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a power supply control device according to an embodiment of the present invention. The power supply control apparatus may include:
a memory D1 for storing computer programs;
and a processor D2, configured to implement the steps of the power supply control method provided by the above method embodiments when executing the computer program.
Specifically, referring to fig. 5, fig. 5 is a schematic structural diagram of a power supply control device according to an embodiment of the present invention, the power supply control device may generate a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 322 (e.g., one or more processors) and a memory 332, and one or more storage media 330 (e.g., one or more mass storage devices) storing an application 342 or data 344. Memory 332 and storage media 330 may be, among other things, transient storage or persistent storage. The program stored on the storage medium 330 may include one or more modules (not shown), each of which may include a sequence of instructions operating on the device. Further, the central processor 322 may be configured to communicate with the storage medium 330, and execute a series of instruction operations in the storage medium 330 on the power supply control device 301.
The power control apparatus 301 may also include one or more power sources 326, one or more wired or wireless network interfaces 350, one or more input-output interfaces 358, and/or one or more operating systems 341. Such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
The power supply control device 301 may be a UPS device.
The steps in the power supply control method described above may be implemented by the structure of the power supply control apparatus.
Corresponding to the above method embodiment, the embodiment of the present invention further provides a readable storage medium, and a readable storage medium described below and a power supply control method described above may be referred to in correspondence with each other.
A readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the power supply control method of the above-mentioned method embodiment.
The readable storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and various other readable storage media capable of storing program codes.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device, the apparatus, the device and the readable storage medium disclosed by the embodiments correspond to the method disclosed by the embodiments, so that the description is simple, and the relevant points can be referred to the method part for description.
The detailed description of the power supply control method, the power supply control device, the power supply control equipment and the readable storage medium provided by the invention is provided above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A power supply control method, comprising:
acquiring externally supplied electric energy;
detecting a power supply mode of the external power supply according to the electric energy; wherein the power supply mode comprises a generator power supply mode or a grid power supply mode;
if the power supply mode is the power grid power supply mode, utilizing the external power supply to carry out bus slow start, and utilizing the external power supply to work after the bus slow start is finished;
if the power supply mode is the power supply mode of the generator, the bus is started slowly by using the power supplied by the battery, and the bus works by using the external power supply after the bus is started slowly.
2. The power supply control method according to claim 1, wherein the detecting a power supply mode of the external power supply based on the electric energy includes:
and determining the power supply mode according to the phase-locked frequency corresponding to the electric energy.
3. The power supply control method according to claim 2, wherein the determining the power supply mode according to the phase-locked frequency corresponding to the electric energy comprises:
determining the power supply mode according to the target frequency change times corresponding to the phase-locked frequency within a first preset time; the target frequency change times are times that the difference between the maximum phase-locked frequency and the minimum phase-locked frequency in a second preset time is greater than a frequency threshold; the first preset time comprises n second preset times, and n is a positive integer greater than or equal to 1.
4. The power supply control method according to claim 3, wherein determining the power supply mode according to a target frequency change number corresponding to the phase-locked frequency within a first preset time period comprises:
acquiring the target frequency change times within first preset time;
judging whether the target frequency change times is greater than or equal to a first time threshold value or not;
if the current time is greater than or equal to the first time threshold value, determining that the power supply mode is the power supply mode of the generator;
if the target frequency change frequency is smaller than the first frequency threshold, judging whether the target frequency change frequency is smaller than a second frequency threshold; wherein the second nonce threshold is less than the first nonce threshold;
if the current time is less than the second time threshold value, determining that the power supply mode is the power grid power supply mode;
and if the frequency is larger than or equal to the second frequency threshold value, timing again, and executing the step of obtaining the target frequency change frequency within the first preset time.
5. The power supply control method according to any one of claims 1 to 4, wherein when the power supply mode is the generator power supply mode, the operating with the external power supply includes:
controlling a PFC part to carry out power factor correction by utilizing a phase detected by a power supply phase detection frequency of a generator in an out-of-synchronization state; the power supply phase detection frequency of the generator is any frequency in a first frequency range, the power supply phase detection frequency of the power grid is any frequency in a second frequency range, the first frequency range comprises the second frequency range, and the first frequency range is larger than the second frequency range.
6. The power supply control method according to any one of claims 1 to 4, wherein when the power supply mode is the generator power supply mode, the operating with the external power supply includes:
adjusting the PFC loop coefficients of the PFC parts to the power supply values of the generators corresponding to the PFC parts; the PFC loop coefficient comprises a voltage loop coefficient and/or a current loop coefficient, the generator power supply numerical value comprises a generator power supply voltage loop numerical value corresponding to the voltage loop coefficient and/or a generator power supply current loop numerical value corresponding to the current loop coefficient, the generator power supply voltage loop numerical value is smaller than a power grid power supply voltage loop numerical value, and the generator power supply current loop numerical value is smaller than a power grid power supply current loop numerical value.
7. The power supply control method according to any one of claims 1 to 4, wherein when the power supply mode is the generator power supply mode, the operating with the external power supply includes:
in the process of supplying power to a battery and a load, supplying power to the battery according to target charging power; and the target charging power is smaller than the charging power of a power grid supply battery.
8. A power supply control device characterized by comprising:
the acquisition module is used for acquiring electric energy supplied by the outside;
the detection module is used for detecting a power supply mode of the external power supply according to the electric energy; wherein the power supply mode comprises a generator power supply mode or a grid power supply mode;
the normal slow start module is used for carrying out bus slow start by using the external power supply if the power supply mode is the power grid power supply mode, and carrying out work by using the external power supply after the bus slow start is finished;
and the battery slow starting module is used for utilizing the battery to supply power to carry out bus slow starting if the power supply mode is the power supply mode of the generator, and utilizing the external power supply to work after the bus slow starting is finished.
9. A power supply control apparatus characterized by comprising:
a memory for storing a computer program;
a processor for implementing the steps of the power supply control method according to any one of claims 1 to 7 when executing the computer program.
10. A readable storage medium, characterized in that the readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the power supply control method according to any one of claims 1 to 7.
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Effective date of registration: 20220429 Address after: 363000 No. 11, Jinxing Road, Xiangcheng District, Zhangzhou City, Fujian Province Applicant after: Zhangzhou Kehua Electric Technology Co.,Ltd. Address before: 363000 No. 11, Jinxing Road, Xiangcheng District, Zhangzhou City, Fujian Province Applicant before: Zhangzhou Kehua Electric Technology Co.,Ltd. Applicant before: Kehua Data Co., Ltd |