CN118169602A - Bypass reverse-filling detection method of UPS, controller, UPS and storage medium - Google Patents
Bypass reverse-filling detection method of UPS, controller, UPS and storage medium Download PDFInfo
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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
- H02J9/062—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 for AC powered loads
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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Abstract
The application provides a bypass reverse-filling detection method of a UPS, a controller, the UPS and a storage medium. The method comprises the following steps: when a target detection signal is received, controlling the inversion output target parameter of the UPS to change according to a preset trend, wherein the target detection signal is used for representing bypass reverse irrigation detection of the UPS; detecting whether the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend; if the bypass reverse irrigation is the same, the bypass reverse irrigation of the UPS is judged. The application can improve the working reliability of the UPS.
Description
Technical Field
The application relates to the technical field of UPS control, in particular to a bypass reverse-filling detection method of a UPS, a controller, the UPS and a storage medium.
Background
With the continuous development of technology, the application field of uninterruptible power supplies (Uninterruptible Power Supply, UPS) is becoming wider and wider. The operational reliability of UPSs is receiving increasing attention.
As shown in fig. 1, existing UPSs typically have three modes of operation, namely mains powered, battery powered, and bypass powered. The priority of the mains supply is highest, and the priority of the bypass supply is lowest. Therefore, the bypass anti-reverse-filling detection plays an extremely important role in ensuring mains supply and battery supply. Once a bypass short circuit occurs, power devices on the battery line and the utility line may be directly damaged, reducing the operational reliability of the UPS.
At present, most of the existing bypass anti-reverse-filling methods are to detect bypass input current to judge whether bypass occurs or not. However, when the bypass is short-circuited, the bypass current is small, higher requirements on current acquisition precision are required, common devices are difficult to achieve, and anti-backflow detection difficulty is high.
Disclosure of Invention
The embodiment of the application provides a bypass reverse-filling detection method of a UPS, a controller, the UPS and a storage medium, and accurate detection of bypass reverse-filling of the UPS can be realized without current detection.
In a first aspect, an embodiment of the present application provides a bypass reverse-filling detection method of a UPS, including:
when a target detection signal is received, controlling the inversion output target parameter of the UPS to change according to a preset trend, wherein the target detection signal is used for representing bypass reverse irrigation detection of the UPS;
Detecting whether the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend;
if the bypass reverse irrigation is the same, the bypass reverse irrigation of the UPS is judged.
In one possible implementation, the target parameter for controlling the inverter output of the UPS varies according to a preset trend, including:
And in the preset duration, the target parameter of the inversion output is controlled to rise and/or fall according to a preset step length in a first preset fluctuation range.
In one possible implementation, detecting whether a trend of a change in a target parameter of a bypass input of the UPS is the same as a preset trend includes:
If the target parameter of the bypass input increases with the increase of the target parameter of the inverter output and/or decreases with the decrease of the target parameter of the inverter output within the preset duration, the change trend of the target parameter of the bypass input of the UPS is judged to be the same as the preset trend.
In one possible implementation, the target parameter for controlling the inverter output of the UPS varies according to a preset trend, including:
within a preset duration, controlling the target parameter of inversion output to change a target value within a second preset fluctuation range;
correspondingly, detecting whether the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend, comprises:
acquiring a change value of a target parameter input by the bypass within a preset duration;
if the change value is the same as the target value, determining that the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend.
In one possible implementation, the target parameter includes voltage and/or frequency.
In one possible implementation manner, the bypass reverse irrigation detection method further includes:
and when the bypass reverse irrigation of the UPS is judged, controlling a bypass switch of the UPS to trip.
In a second aspect, an embodiment of the present application provides a bypass reverse-filling detection device of a UPS, including:
the parameter control module is used for controlling the inversion output target parameter of the UPS to change according to a preset trend when receiving a target detection signal, wherein the target detection signal is used for representing bypass reverse irrigation detection of the UPS;
The first judging module is used for detecting whether the change trend of the target parameter input by the bypass of the UPS is the same as the preset trend;
And the second judging module is used for judging that the bypass reverse irrigation occurs to the UPS if the bypass reverse irrigation occurs to the UPS.
In a third aspect, an embodiment of the present application provides a controller, including a memory and a processor, where the memory stores a computer program executable on the processor, and the processor executes the computer program to implement the steps of the bypass reverse-filling detection method of the UPS according to the first aspect or any one of the possible implementations of the first aspect.
In a fourth aspect, embodiments of the present application provide a UPS including a controller as in the third aspect above.
In a fifth aspect, embodiments of the present application provide a computer readable storage medium storing a computer program, which when executed by a processor implements the steps of the bypass reverse-filling detection method of the UPS according to the first aspect or any one of the possible implementations of the first aspect.
The application provides a bypass reverse-filling detection method of a UPS, a controller, the UPS and a storage medium. When the change trend of the target parameter of the bypass input is detected to be the same as the change trend of the target parameter of the inversion output, the bypass reverse filling of the UPS can be judged. The accurate detection of the reverse irrigation of the UPS bypass can be realized without arranging a current detection circuit, thereby being beneficial to the timely maintenance of the UPS by staff and improving the working reliability of the UPS.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conventional UPS according to an embodiment of the present application;
FIG. 2 is a flowchart of an implementation of a bypass reverse-filling detection method of a UPS according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a bypass reverse-filling detection device of a UPS according to an embodiment of the present application;
Fig. 4 is a schematic diagram of a controller according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the conventional UPS includes three operation modes, namely:
mains supply: first mains supply- & gt AC/DC- & gt DC/AC- & gt alternating current output;
and (3) battery power supply: battery → DC/DC → DC/AC → AC output;
bypass power supply: second mains supply, bypass switch, alternating current output.
The priority of the mains supply is highest, the priority of the battery supply is lower, and the priority of the bypass supply is lowest. The first commercial power and the second commercial power may be the same or different, and may specifically be set according to the actual implementation.
In the practical application process, if the bypass of the UPS is short-circuited, the output of the UPS may be reversely fed back to the input through the bypass, so that the power device of the device is damaged.
At present, most of the prior art is to set a bypass current detection circuit to detect bypass current to judge whether bypass short circuit occurs. However, the bypass short-circuit current is smaller, the detection precision is high, the requirements on devices are high, the general devices hardly meet the corresponding requirements, and the anti-backflow detection difficulty is high.
In order to solve the problems, the embodiment of the application provides a bypass reverse-filling detection method of a UPS, which can realize reverse-filling detection without current detection. The following is a detailed description.
Referring to fig. 2, a flowchart of an implementation of a bypass reverse-filling detection method of a UPS provided by an embodiment of the present application is shown. As shown in fig. 2, a bypass reverse-filling detection method of a UPS may include S101 to S103.
S101, when a target detection signal is received, controlling the inversion output target parameter of the UPS to change according to a preset trend, wherein the target detection signal is used for indicating bypass reverse irrigation detection of the UPS.
The embodiment of the application can output the target detection signal when the bypass reverse filling detection is required to be carried out on the UPS. For example, the target detection signal may be output after the UPS performs power line switching to detect whether the bypass is reverse-filled. Or outputting a target detection signal every preset detection time interval to detect whether the bypass is reversely irrigated. Or outputting a target detection signal after the UPS is powered off and then powered on so as to detect whether the bypass is reversely irrigated, and the like, and the detection method can be specifically set according to actual conditions.
In embodiments of the application, the target parameter may be an operating parameter of the UPS other than current, for example, the target parameter may be voltage and/or frequency.
Exemplary, the embodiment of the application can control the voltage of the inversion output of the UPS to change according to a preset trend, and/or can control the frequency of the inversion output of the UPS to change according to the preset trend.
Specifically, the voltage of the inversion output of the UPS can be increased or decreased according to a preset trend disturbance voltage within a certain voltage range without affecting the UPS power supply. Or the frequency of the inverted output of the UPS can be increased or decreased within a certain frequency range according to the disturbance frequency of the preset trend.
S102, detecting whether the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend.
Normally, the output of the UPS or inverter will not affect the input of the bypass when no short circuit is occurring in the bypass. That is, the bypass input of the UPS generally does not change with the inverted output of the UPS when a bypass short circuit does not occur. Once the bypass input changes with the inverter output, the UPS may be deemed to have a bypass short.
Therefore, in the embodiment of the present application, after the target parameter controlling the inversion output of the UPS is disturbed according to the preset trend, the trend of the change of the target parameter of the bypass input of the UPS may be detected. If the trend of the target parameter of the bypass input of the UPS is consistent with the preset trend, the bypass of the UPS is indicated to be short-circuited. If the change trend of the target parameter of the bypass input of the UPS is inconsistent with the preset trend, the bypass of the UPS is indicated not to have short circuit.
The target parameter is voltage, and after the voltage of the inversion output of the UPS is controlled to be increased and then decreased according to a preset trend, if the voltage of the bypass input of the UPS is detected to be increased and then decreased, it may be indicated that the change trend of the voltage of the bypass input of the UPS is the same as the preset trend, and the UPS may be shorted. If the voltage of the bypass input of the UPS is detected to be unchanged, the change trend of the voltage of the bypass input of the UPS is different from the preset trend, and the bypass of the UPS is normal.
For example, the target parameter is frequency, after the frequency of the inverter output of the UPS is controlled to decrease and then increase according to the preset trend, if the frequency of the bypass input of the UPS is detected to decrease and then increase, it may indicate that the change trend of the frequency of the bypass input of the UPS is the same as the preset trend, and the UPS may have a short circuit. If the frequency of the bypass input of the UPS is detected to be unchanged, the change trend of the frequency of the bypass input of the UPS is different from the preset trend, and the bypass of the UPS is normal.
S103, if the bypass reverse irrigation is the same, judging that the UPS is in bypass reverse irrigation.
When the change trend of the target parameters input by the bypass of the UPS is the same as the preset trend, the bypass of the UPS can be judged to be reversely irrigated, and at the moment, the bypass of the UPS is abnormally conducted, and the bypass short circuit condition is likely to occur.
In the embodiment of the application, after the bypass reverse irrigation of the UPS is judged, the bypass switch of the UPS can be controlled to trip, so that the bypass is opened, the reverse irrigation of other circuits of the UPS caused by the bypass is avoided, and the working reliability of the UPS is improved.
According to the embodiment of the application, the target parameters of the inversion output of the UPS are disturbed according to the preset trend, and the change trend of the target parameters of the bypass input of the UPS is detected, and when the change trend is consistent with the preset trend, the reverse irrigation of the bypass of the UPS is indicated, so that the reverse irrigation of the UPS can be rapidly and accurately identified, a current acquisition circuit is not required to be arranged, the UPS can be maintained by staff in time, and the working reliability of the UPS is improved.
In some embodiments of the present application, the "the target parameter for controlling the inverter output of the UPS" in S101 is changed according to a preset trend "may include:
And in the preset duration, the target parameter of the inversion output is controlled to rise and/or fall according to a preset step length in a first preset fluctuation range.
The preset time length is a time length after the target detection signal is received, and the preset time length can be set according to actual conditions. The first preset fluctuation range is a change range of the target parameter which is normally adjustable.
Optionally, the target parameter is voltage and/or frequency.
And in the preset time after receiving the target detection signal, the voltage output by the UPS inverter can be controlled to be gradually increased within the preset voltage fluctuation range according to the preset voltage step length. Or in a preset time period after receiving the target detection signal, the voltage output by the UPS inverter can be controlled to be gradually reduced within a preset voltage fluctuation range according to a preset voltage step length. Or in a preset time after receiving the target detection signal, the voltage of the inversion output of the UPS can be controlled to gradually rise in a preset voltage fluctuation range according to a preset voltage step length, and then gradually fall according to the preset voltage step length.
Or in a preset time period after receiving the target detection signal, the frequency of the inversion output of the UPS can be controlled to be gradually increased in a preset frequency fluctuation range according to a preset frequency step length. Or in a preset time period after receiving the target detection signal, the frequency of the inversion output of the UPS can be controlled to gradually decrease in a preset frequency fluctuation range according to a preset frequency step length. Or in a preset time period after receiving the target detection signal, the frequency of the inversion output of the UPS can be controlled to gradually rise in a preset frequency fluctuation range according to a preset frequency step length, and then gradually fall according to the preset frequency step length.
Or in a preset time period after receiving the target detection signal, the voltage of the inversion output of the UPS can be controlled to gradually rise in a preset voltage fluctuation range according to a preset voltage step length, then gradually fall according to a preset voltage step length, and the frequency of the inversion output of the UPS is controlled to gradually rise in a preset frequency fluctuation range according to a preset frequency step length, then gradually fall according to a preset frequency step length. The setting can be specifically selected according to actual conditions.
For example, the voltage of the inverted output of the UPS may be controlled to perturb from- Δu to +Δu, and the frequency of the inverted output of the UPS may be controlled to perturb from- Δf to +Δf.
At the same time, the voltage and frequency of the bypass input of the UPS are detected. If the voltage of the bypass input is detected to change from-a to +a, and the frequency of the bypass input changes from-b to +b, it may be indicated that the trend of the target parameter of the bypass input of the UPS is consistent with the preset trend, and it is determined that the bypass reverse-filling occurs in the UPS. Wherein a and b are threshold coefficients, and a and b are both 0.5-1.5, and can be specifically selected according to practical situations.
According to the embodiment of the application, the target parameters of the inversion output of the UPS are controlled to change in a reasonable range according to the preset trend, so that normal power supply of the UPS is not influenced, and the reverse irrigation detection of the bypass of the UPS can be realized.
In some embodiments of the present application, the step S102 may include:
If the target parameter of the bypass input increases with the increase of the target parameter of the inverter output and/or decreases with the decrease of the target parameter of the inverter output within the preset duration, the change trend of the target parameter of the bypass input of the UPS is judged to be the same as the preset trend.
Specifically, the method can be divided into at least three cases:
First kind: within a preset duration, the target parameter of the inversion output is controlled to rise according to a preset step length within a first preset fluctuation range.
If the detected target parameter of the bypass input rises along with the rise of the target parameter of the inversion output within the preset duration, the change trend of the target parameter of the bypass input of the UPS can be judged to be the same as the preset trend, so that the bypass reverse filling of the UPS is indicated. If the target parameter of the bypass input is detected not to change along with the rise of the target parameter of the inversion output within the preset time length, the UPS bypass can be judged to be normal.
Second kind: within a preset duration, the target parameter of the inversion output is controlled to be reduced according to a preset step length within a first preset fluctuation range.
If the target parameter of the bypass input is detected to be reduced along with the reduction of the target parameter of the inversion output within the preset time length, the change trend of the target parameter of the bypass input of the UPS can be judged to be the same as the preset trend, and the bypass reverse filling of the UPS is indicated. If the target parameter of the bypass input is detected not to change along with the reduction of the target parameter of the inversion output within the preset time length, the UPS bypass can be judged to be normal.
Third kind: within a preset duration, the embodiment of the application controls the target parameter of the inversion output to rise, fall, rise and fall in sequence according to a preset step length within a first preset fluctuation range.
If the detected target parameter of the bypass input rises-falls-rises-falls along with the target parameter of the inversion output within the preset duration, the change trend of the target parameter of the bypass input of the UPS can be judged to be the same as the preset trend, and the bypass reverse filling of the UPS is indicated. If the target parameters of the bypass input are detected to be unchanged along with the change of the target parameters of the inversion output within the preset time period, or the change trend is inconsistent, the UPS bypass can be judged to be normal.
In the embodiment of the present application, the trend of the target parameter is increased, which can be understood that the parameter value of the current target parameter is increased from the parameter value of the target parameter at the previous time. The trend of the target parameter is reduced, which is understood to mean that the parameter value of the current target parameter is reduced from the parameter value of the target parameter at the previous moment.
According to the embodiment of the application, whether bypass reverse irrigation occurs can be accurately judged by analyzing the change trend of the target parameter input by the bypass, a complex current acquisition circuit is not required to be arranged, and the working stability of the UPS can be improved.
In some embodiments of the present application, the "the target parameter for controlling the inverter output of the UPS" in S101 is changed according to a preset trend "may include:
within a preset duration, controlling the target parameter of inversion output to change a target value within a second preset fluctuation range;
correspondingly, detecting whether the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend, comprises:
acquiring a change value of a target parameter input by the bypass within a preset duration;
if the change value is the same as the target value, determining that the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend.
After receiving the target detection signal, the embodiment of the application can control the target parameter of the inversion output to change the target value within a second preset fluctuation range within a preset time period, wherein the second preset fluctuation range is the fluctuation range of normal work of the target parameter. And adjusting the target parameters within a second preset fluctuation range without affecting the normal operation of the UPS.
After the target value of the target parameter is adjusted, the change value of the target parameter input by the bypass in the preset time period can be obtained, and the change value and the target value are compared, so that whether the change trend of the change value is the same as the change trend of the change value.
For example, after receiving the target detection signal, the voltage of the inversion output may be adjusted from 220V to 225V by changing the given value of the voltage of the inversion output, with the target value being +5v.
If it is detected that the voltage of the bypass input of the UPS is changed from 220V to 225V, the change value of the voltage of the bypass input is +5V. Wherein the inverting output-bypass input=225V-225 v=0v, which is small.
At this time, +5v= +5v, that is, the target value=the change value, it may be determined that the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend, and the bypass reverse filling may occur.
For example, after receiving the target detection signal, the voltage of the inversion output may be adjusted from 220V to 225V by changing the given value of the voltage of the inversion output, with the target value being +5v.
If it is detected at this time that the voltage of the bypass input of the UPS remains unchanged at 220V, the value of the change in the voltage of the bypass input is 0V. Wherein the inverting output-bypass input=225V-220 v=5v, which is larger.
At this time, +5v+.0v, that is, the target value+.noteq.variation value, it can be determined that the variation trend of the target parameter of the bypass input of the UPS is different from the preset trend, and the bypass reverse filling does not occur.
For example, after receiving the target detection signal, the voltage of the inversion output may be adjusted from 220V to 222V by changing the given value of the voltage of the inversion output, with the target value being +2v.
If it is detected at this time that the voltage of the bypass input of the UPS remains unchanged at 220V, the value of the change in the voltage of the bypass input is 0V. Where the inverter output-bypass input=222V-220 v=2v, which is small.
At this time, +2v+.0v, that is, the target value+.noteq.variation value, it can be determined that the variation trend of the target parameter of the bypass input of the UPS is different from the preset trend, and no bypass reverse filling occurs.
From the above, through the trend comparison between the target value and the variation value, whether bypass reverse irrigation occurs can be accurately judged. When the target value=the change value, the bypass input and the inverter output have the same change trend, and it can be determined that the bypass reverse filling occurs. When the target value is not equal to the change value, the bypass input and the inversion output have different change trends, and the bypass reverse filling can be judged not to occur.
Further, although the degree of phase difference and the tendency of the two can be judged to some extent from the difference between the inversion output and the bypass input. However, as seen from the above embodiments, when the fluctuation of the inversion output and the bypass input is small, it is difficult to accurately judge whether or not the bypass reverse filling occurs based on the difference between the two. Therefore, the embodiment of the application adopts whether the target value and the change value are equal to each other or not to accurately judge whether bypass reverse filling occurs or not.
In the embodiment of the present application, if the absolute value of the difference between the change value and the target value is less than or equal to the preset value, it may be determined that the change value and the target value are the same.
For example, the preset value is 1V, after receiving the target detection signal, the voltage outputted by the inversion can be adjusted from 220V to 218V by changing the given value of the voltage outputted by the inversion, and the target value is-2V.
If it is detected that the voltage of the bypass input of the UPS is changed from 220V to 218.2V, the change value of the voltage of the bypass input is-1.8V.
From the above, if the i target value-change value = | -2v+1.8v|=0.2v is less than or equal to 1V, the target value and the change value may be the same, and it may be determined that the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend, and bypass reverse filling may occur.
According to the embodiment of the application, the target value is changed by controlling the target parameter of the inversion output, then the trend judgment is carried out on the target value and the change value of the target parameter of the bypass input, and whether the bypass input of the UPS follows the inversion output change is judged according to the result, so that whether the bypass short circuit occurs is effectively judged, the effective treatment is ensured when the bypass reverse irrigation occurs, and the working reliability of the UPS is improved.
In some embodiments of the present application, the bypass reverse-filling detection method of the UPS may further include:
When the inversion of the UPS is not carried out and the bypass switch of the UPS is not closed, if the detected bypass output voltage is the same as the bypass input voltage, the short circuit of the UPS is judged, and the reverse filling of the UPS is possible.
According to the embodiment of the application, the voltage and/or the frequency of the inversion output of the UPS are disturbed, whether the voltage and/or the frequency of the bypass input of the UPS have the same trend change is detected, and whether the bypass of the UPS is short-circuited is further judged, so that accurate reverse irrigation identification of the UPS is performed. The bypass current is not required to be monitored, a high-precision current acquisition circuit is not required to be arranged, and the working reliability of the UPS can be effectively improved.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.
The following are device embodiments of the application, for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 3 is a schematic structural diagram of a bypass reverse-filling detection device of a UPS according to an embodiment of the present application, and for convenience of explanation, only a portion related to the embodiment of the present application is shown, which is described in detail below:
as shown in fig. 3, the bypass reverse-filling detection device 20 of the UPS may include:
The parameter control module 201 is configured to control, when receiving a target detection signal, a target parameter of an inversion output of the UPS to change according to a preset trend, where the target detection signal is used to indicate that bypass reverse irrigation detection is performed on the UPS;
A first judging module 202, configured to detect whether a variation trend of a target parameter of a bypass input of the UPS is the same as a preset trend;
and the second judging module 203 is configured to judge that bypass reverse filling occurs in the UPS if the bypass reverse filling occurs in the UPS.
In some embodiments of the present application, the parameter control module 201 may be further configured to control the target parameter of the inverter output to increase and/or decrease in a preset step size within the first preset fluctuation range within a preset duration.
In some embodiments of the present application, the first determining module 202 is further configured to determine that the trend of the target parameter of the bypass input of the UPS is the same as the preset trend if the target parameter of the bypass input increases with an increase in the target parameter of the inverter output and/or decreases with a decrease in the target parameter of the inverter output within the preset time period.
In some embodiments of the present application, the parameter control module 201 may be further configured to control the target parameter of the inverter output to change the target value within the second preset fluctuation range within the preset duration;
Correspondingly, the first judging module 202 is further configured to obtain a change value of the target parameter of the bypass input within a preset duration;
if the change value is the same as the target value, determining that the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend.
In some embodiments of the application, the target parameter includes voltage and/or frequency.
In some embodiments of the present application, the detection device may further include:
and the third judging module is used for controlling the bypass switch of the UPS to trip when judging that the bypass reverse irrigation occurs to the UPS.
Fig. 4 is a schematic diagram of a controller according to an embodiment of the present application. As shown in fig. 4, the controller 30 of this embodiment includes: a processor 300 and a memory 301, the memory 301 having stored therein a computer program 302 executable on the processor 300. The processor 300, when executing the computer program 302, implements the steps of the bypass reverse-fill detection method embodiment of each UPS described above. Or the processor 300, when executing the computer program 302, performs the functions of the modules/units in the various device embodiments described above.
By way of example, the computer program 302 may be partitioned into one or more modules/units, which are stored in the memory 301 and executed by the processor 300 to accomplish the present application. One or more of the modules/units may be a series of computer program instruction segments capable of performing particular functions to describe the execution of the computer program 302 in the controller 30.
The controller 30 may include, but is not limited to, a processor 300, a memory 301. It will be appreciated by those skilled in the art that fig. 4 is merely an example of the controller 30 and is not meant to be limiting of the controller 30, and may include more or fewer components than shown, or may combine certain components, or different components, e.g., the controller may further include input-output devices, network access devices, buses, etc.
The Processor 300 may be a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 301 may be an internal storage unit of the controller 30, such as a hard disk or a memory of the controller 30. The memory 301 may also be an external storage device of the controller 30, such as a plug-in hard disk provided on the controller 30, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD), or the like. Further, the memory 301 may also include both an internal storage unit and an external storage device of the controller 30. The memory 301 is used to store computer programs and other programs and data required by the controller. The memory 301 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
Embodiments of the present application may also provide a UPS including a controller 30 as described above.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/controller and method may be implemented in other manners. For example, the apparatus/controller embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the foregoing embodiment, or may be implemented by a computer program instructing related hardware, where the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of the bypass reverse-filling detection method embodiment of each UPS described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A bypass reverse-filling detection method of UPS is characterized by comprising the following steps:
When a target detection signal is received, controlling the inversion output target parameter of the UPS to change according to a preset trend, wherein the target detection signal is used for representing bypass reverse irrigation detection of the UPS;
Detecting whether the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend;
if the bypass reverse filling is the same, the UPS is judged to have bypass reverse filling.
2. The bypass reverse-filling detection method of a UPS according to claim 1, wherein the target parameter for controlling the inversion output of the UPS changes according to a preset trend, including:
And in the preset duration, the target parameter of the inversion output is controlled to rise and/or fall according to a preset step length in a first preset fluctuation range.
3. The method for detecting bypass reverse-filling of UPS according to claim 2, wherein detecting whether the trend of the change of the target parameter of the bypass input of the UPS is the same as the preset trend includes:
If the target parameter of the bypass input rises along with the rise of the target parameter of the inversion output and/or falls along with the fall of the target parameter of the inversion output within the preset duration, the change trend of the target parameter of the bypass input of the UPS is judged to be the same as the preset trend.
4. The bypass reverse-filling detection method of a UPS according to claim 1, wherein the target parameter for controlling the inversion output of the UPS changes according to a preset trend, including:
within a preset duration, controlling the target parameter of inversion output to change a target value within a second preset fluctuation range;
correspondingly, the detecting whether the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend includes:
Acquiring a change value of the target parameter of the bypass input within a preset duration;
And if the change value is the same as the target value, judging that the change trend of the target parameter of the bypass input of the UPS is the same as the preset trend.
5. A method of bypass reverse flow detection for a UPS according to any one of claims 1 to 4 wherein the target parameter comprises voltage and/or frequency.
6. The bypass reverse-fill detection method of a UPS of claim 1, further comprising:
and when the bypass reverse irrigation of the UPS is judged, controlling a bypass switch of the UPS to trip.
7. A bypass reverse-filling detection device of a UPS, comprising:
the parameter control module is used for controlling the inversion output target parameter of the UPS to change according to a preset trend when receiving a target detection signal, wherein the target detection signal is used for representing bypass reverse irrigation detection of the UPS;
the first judging module is used for detecting whether the change trend of the target parameter input by the bypass of the UPS is the same as the preset trend;
and the second judging module is used for judging that the bypass reverse filling occurs to the UPS if the bypass reverse filling occurs to the UPS.
8. A controller comprising a memory and a processor, the memory having stored thereon a computer program operable to, when executed by the processor, implement the steps of the bypass reverse-fill detection method of a UPS as claimed in any one of claims 1 to 6.
9. A UPS comprising the controller of claim 8.
10. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor performs the steps of the bypass reverse-fill detection method of a UPS according to any one of claims 1 to 6.
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| CN202410159092.1A CN118169602A (en) | 2024-02-04 | 2024-02-04 | Bypass reverse-filling detection method of UPS, controller, UPS and storage medium |
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