CN109428387A - Anti-error starting method, device and the machine readable storage medium of apparatus for fast switching - Google Patents
Anti-error starting method, device and the machine readable storage medium of apparatus for fast switching Download PDFInfo
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- CN109428387A CN109428387A CN201710776102.6A CN201710776102A CN109428387A CN 109428387 A CN109428387 A CN 109428387A CN 201710776102 A CN201710776102 A CN 201710776102A CN 109428387 A CN109428387 A CN 109428387A
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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
- H02J9/061—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 DC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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Abstract
The present invention relates to the anti-error starting method of apparatus for fast switching, device with and machine readable storage medium, method includes: fall of the voltage of one bus of acquisition in a preset time period, and judge whether fall is greater than or equal to first preset threshold, an asynchronous machine is electrically connected on bus；If result is yes, then it is latched apparatus for fast switching, and judge whether the change amplitude of the voltage of bus is greater than or equal to second preset threshold, wherein judge whether the change amplitude of the voltage of bus is greater than or equal to the initial time of second preset threshold and is later than end time of preset time period, change amplitude is obtained according to the difference between the real-time voltage of bus and a first voltage, and first voltage is to judge and judge that fall is greater than or equal to the real-time voltage that the first preset threshold obtains later；If result be it is yes, keep the blocking of apparatus for fast switching.The present invention can be avoided the mistake start-up function of apparatus for fast switching.
Description
Technical field
The present invention relates to field of electrical equipment, in particular to anti-error starting method, device and the machine of apparatus for fast switching
Readable storage medium storing program for executing.
Background technique
For many large size industrial enterprises, such as power plant, petrochemical industry, steel production, automobile manufacture enterprise, power supply can
It has very important significance by property, continuity to enterprise, is the primary condition of various electrical equipment safe operations.Therefore,
The more demanding occasion of reliability and continuity for power supply, power supply system generally have that there are two the power supplys powered, respectively
Main power source and backup power source.Main power source and backup power source are all connected on bus, can be each power supply for electrical equipment by bus.
Under normal circumstances, by main power source to bussed supply, backup power source is in hot stand-by duty.When main power source breaks down, need
Starting backup power source continues as each power supply for electrical equipment.In the prior art, switching can be generally realized by apparatus for fast switching,
To guarantee the rapidity and safety of power supply switching.Specifically, the voltage on apparatus for fast switching meeting real-time measurement bus.When
When identifying voltage dip, determines that main power source breaks down, start backup power source immediately.But in practical operation, send out sometimes
The case where raw main power source does not break down, and apparatus for fast switching also starts backup power source.In this way, will cause unnecessary for cutting
It changes.It is easy to damage the electrical equipment being connected electrically on bus in this way.
Summary of the invention
In view of this, the invention proposes the anti-error starting method of apparatus for fast switching, device and machine readable storage Jie
Matter, for avoiding unnecessary power switching.
The anti-error starting method of one aspect of the present invention offer apparatus for fast switching, comprising:
Fall of the voltage of a bus in a preset time period is obtained, and whether judges the fall
More than or equal to one the first preset threshold, the fall are the corresponding electricity of initial time according to the preset time period
What pressure and the difference of real-time voltage within a preset period of time obtained；
If result be it is yes, be latched the apparatus for fast switching, and judge the bus voltage change amplitude whether
More than or equal to one the second preset threshold, wherein whether the change amplitude of the voltage for judging the bus is greater than or equal to
The initial time of one the second preset threshold is later than the end time of the preset time period, and the change amplitude is according to
What the difference between the real-time voltage of bus and a first voltage obtained, the first voltage is to judge the fall
More than or equal to the real-time voltage obtained after first preset threshold；
If result be it is yes, keep the blocking of the apparatus for fast switching.
When the fall of the voltage for judging bus within a preset period of time is greater than or equal to the first preset threshold, i.e.,
When there is the case where rapid drawdown, by judging the next change amplitude of the voltage of bus, and then determination is that main power source has gone out event
Voltage dip caused by voltage dip or asynchronous machine caused by hindering start, when judge be caused by asynchronous machine starting it is electric
Rapid drawdown is pressed, then does not start the backup power source of bus connection, and then avoids the mistake start-up function of apparatus for fast switching.Such starting
Method is quick and easy, will not excessively increase cost.
According to above-mentioned anti-error starting method, optionally, further includes:
Judge whether the change amplitude is less than or equal to the third predetermined threshold value, the third predetermined threshold value is negative
Number；
If result be it is yes, release the locking of the apparatus for fast switching.
In this way, then starting backup power source in the case where the voltage dip caused by judging that main power source breaks down, to protect
Demonstrate,prove the normal operation of equipment.Such starting method is quick and easy, will not excessively increase cost.
According to above-mentioned anti-error starting method, optionally, whether the change amplitude of the voltage for judging the bus is big
Include: in or equal to second preset threshold
Described in the voltage for obtaining the bus according to the difference between the real-time voltage of the bus and the first voltage
Change amplitude；
Judge whether the change amplitude is greater than or equal to the second preset threshold.
It is optionally, described to judge whether the change amplitude is greater than or equal to second according to above-mentioned anti-error starting method
Preset threshold specifically includes:
Judge whether the absolute value of the change amplitude is greater than or equal to the second preset threshold；
If result is yes, it is determined that whether the change amplitude is that voltage increases；
If it is determined that the amplitude of change is voltage raising, then judge that the change amplitude is greater than or equal to the second default threshold
Value.
According to above-mentioned anti-error starting method, optionally, the voltage for obtaining a bus is in a preset time period
Interior fall includes:
In the preset time period, the voltage drop-out value an of bus is obtained；
Using the ratio of the voltage drop-out value and the specified level pressure of the bus as the fall；
Wherein, first preset threshold is the ratio of the first voltage and the voltage rating.
The otherness as brought by the difference of the voltage rating of bus can be eliminated in this way.
According to above-mentioned anti-error starting method, optionally, the change amplitude be according to the real-time voltage of the bus with
What difference between one first voltage obtained includes:
The change amplitude=(real-time voltage-of the bus first voltage)/voltage rating.
The otherness as brought by the difference of the voltage rating of bus can be eliminated in this way.
According to above-mentioned anti-error starting method, optionally, the corresponding voltage of the initial time of the preset time period is electricity
Connect the voltage of bus when each equipment of the bus works normally.
Another aspect of the present invention provides the false-start preventing device of apparatus for fast switching, including an acquisition module, one the
One judgment module and a determining module.
Wherein, it obtains module and is used to obtain fall of the voltage of a bus in a preset time period, it is described
Fall is the corresponding voltage of initial time and real-time voltage within a preset period of time according to the preset time period
What difference obtained；First judgment module for judging whether the fall is greater than or equal to first preset threshold, if
Judging result be it is yes, then trigger determining module, the fall is corresponding according to the initial time of the preset time period
What the difference of voltage and real-time voltage within a preset period of time obtained；The determining module is switched fast dress described in being used to be latched
It sets, and judges whether the change amplitude of the voltage of the bus is greater than or equal to second preset threshold, wherein the judgement
The initial time whether the change amplitude of the voltage of the bus is greater than or equal to second preset threshold is later than described default
The end time of period, the change amplitude are the real-time voltage and one according to the bus in the preset time period
What the difference between first voltage obtained, the first voltage is to judge that the fall is greater than or equal to described first in advance
If threshold value after obtain a real-time voltage, if result be it is yes, keep the blocking of the apparatus for fast switching.
When the fall of the voltage for judging bus within a preset period of time is greater than or equal to the first preset threshold, i.e.,
When there is the case where rapid drawdown, by judging the next change amplitude of the voltage of bus, and then determination is that main power source has gone out event
Voltage dip caused by voltage dip or asynchronous machine caused by hindering start, when judge be caused by asynchronous machine starting it is electric
Rapid drawdown is pressed, then does not start the backup power source of bus connection, and then avoids the mistake start-up function of apparatus for fast switching.Such starting
Method is quick and easy, will not excessively increase cost.
According to above-mentioned false-start preventing device, optionally, the determining module is also used to:
Judge whether the change amplitude is less than or equal to the third predetermined threshold value, the third predetermined threshold value is negative
Number；
If result be it is yes, release the locking of the apparatus for fast switching.
In this way, then starting backup power source in the case where the voltage dip caused by judging that main power source breaks down, to protect
Demonstrate,prove the normal operation of equipment.Such starting method is quick and easy, will not excessively increase cost.
According to above-mentioned false-start preventing device, optionally, the first judgment module is specifically used for:
Described in the voltage for obtaining the bus according to the difference between the real-time voltage of the bus and the first voltage
Change amplitude；
Judge whether the change amplitude is greater than or equal to the second preset threshold.
According to above-mentioned false-start preventing device, optionally, the first judgment module judges that the change amplitude is in execution
When the no operation for being greater than or equal to the second preset threshold, specifically include:
Judge whether the absolute value of the change amplitude is greater than or equal to the second preset threshold；
If result is yes, it is determined that whether the change amplitude is that voltage increases；
If it is determined that the amplitude of change is voltage raising, then judge that the change amplitude is greater than or equal to the second default threshold
Value.
According to above-mentioned false-start preventing device, optionally, the acquisition module is specifically used for:
In the preset time period, the voltage drop-out value an of bus is obtained；
Using the ratio of the voltage drop-out value and the specified level pressure of the bus as fall；
Wherein, first preset threshold is the ratio of the first voltage and the voltage rating.
The otherness as brought by the difference of the voltage rating of bus can be eliminated in this way.
According to above-mentioned false-start preventing device, optionally, the change amplitude=(real-time voltage-of the bus is described
First voltage)/the voltage rating.
According to above-mentioned false-start preventing device, optionally, the corresponding voltage of the initial time of the preset time period is electricity
Connect the voltage of bus when each equipment of the bus works normally.
The otherness as brought by the difference of the voltage rating of bus can be eliminated in this way.
The false-start preventing device of another aspect of the invention offer apparatus for fast switching, comprising:
At least one processor, for storing instruction；
At least one processor, the instruction execution for being used to be stored according to the memory are as above described in any item quick
The anti-error starting method of switching device.
When the fall of the voltage for judging bus within a preset period of time is greater than or equal to the first preset threshold, i.e.,
When there is the case where rapid drawdown, by judging the next change amplitude of the voltage of bus, and then determination is that main power source has gone out event
Voltage dip caused by voltage dip or asynchronous machine caused by hindering start, when judge be caused by asynchronous machine starting it is electric
Rapid drawdown is pressed, then does not start the backup power source of bus connection, and then avoids the mistake start-up function of apparatus for fast switching.Such starting
Method is quick and easy, will not excessively increase cost.
Further aspect of the present invention provides machine readable storage medium, and being stored with machine in the machine readable storage medium can
Reading instruction, when being executed by a machine, the machine execution is as above described in any item quickly to cut the machine readable instructions
The anti-error starting method of changing device.
When the fall of the voltage for judging bus within a preset period of time is greater than or equal to the first preset threshold, i.e.,
When there is the case where rapid drawdown, by judging the next change amplitude of the voltage of bus, and then determination is that main power source has gone out event
Voltage dip caused by voltage dip or asynchronous machine caused by hindering start, when judge be caused by asynchronous machine starting it is electric
Rapid drawdown is pressed, then does not start the backup power source of bus connection, and then avoids the mistake start-up function of apparatus for fast switching.Such starting
Method is quick and easy, will not excessively increase cost.
Detailed description of the invention
Below will detailed description of the present invention preferred embodiment by referring to accompanying drawing, make those skilled in the art more
Clear above and other feature and advantage of the invention, in attached drawing:
Fig. 1 is the change curve schematic diagram of the voltage of bus when main power source of the present invention breaks down.
The change curve schematic diagram of the voltage of bus when the asynchronous machine starting that Fig. 2 is connected for bus of the present invention.
Fig. 3 is the flow diagram according to the anti-error starting method of the apparatus for fast switching of one embodiment of the invention.
Fig. 4 is the flow diagram according to the anti-error starting method of the apparatus for fast switching of another embodiment of the present invention.
Fig. 5 is the structural schematic diagram according to the false-start preventing device of the apparatus for fast switching of yet another embodiment of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, by the following examples to of the invention further detailed
It describes in detail bright.
One or more asynchronous machines are generally electrically connected on bus.Know by analysis, when asynchronous machine starting,
It will cause the voltage dip of bus.
As depicted in figs. 1 and 2, the change curve schematic diagram of the voltage of bus when respectively main power source breaks down, and
The change curve schematic diagram of the voltage of bus when the asynchronous machine starting that bus is connected.As can be seen that working as from Fig. 1 and Fig. 2
When main power source breaks down and when asynchronous machine starts, the voltage of bus all can rapid drawdown.Under i.e. within a shorter time
Range of decrease degree is larger.In the prior art, it is voltage dip caused by which reason that apparatus for fast switching, which can not identify,.Therefore, exist
After the voltage dip for identifying bus, will be considered that it is that main power source breaks down, and then starts backup power source.It thus will appear master
The case where power supply is not broken down with regard to starting backup power source, i.e., there is accidentally start-up function in apparatus for fast switching.
It as shown in Figure 1, main power source breaks down, will not rise again after the voltage dip of bus, but become in decline always
Gesture.As shown in Fig. 2, when asynchronous machine starts then the rapid drawdown before this of the voltage of bus gradually rises up to be connected to the institute on bus
Operating voltage when thering is equipment to work normally.The operating voltage can be according to time real-time fluctuations.Therefore, the present invention passes through mother
The variation tendency of the voltage of line determines the need for starting backup power source, and then avoids accidentally starting.
Embodiment one
The present embodiment provides a kind of anti-error starting method of apparatus for fast switching, executing subject is the anti-of apparatus for fast switching
Accidentally starting device.The false-start preventing device can be set in apparatus for fast switching, can also be separately provided, specifically can basis
Actual needs selection.The false-start preventing device of the present embodiment refers to the device for being able to carry out anti-error starting method, for example, fastly
The physical components of speed switching device, or the virtual module in apparatus for fast switching, details are not described herein.
As shown in figure 3, for according to the flow diagram of the anti-error starting method of the apparatus for fast switching of the present embodiment.This is anti-
Missing starting method includes:
Step 101, fall of the voltage of a bus in a preset time period is obtained, and judges fall
Whether first preset threshold is greater than or equal to.If result be it is yes, then follow the steps 102.
The fall of the present embodiment is according to the corresponding voltage of initial time of preset time period and in preset time period
What the difference of interior real-time voltage obtained.The corresponding voltage of the initial time can be the operating voltage of bus, i.e., institute on bus
The voltage of bus when all devices of connection are in normal operating conditions.The value range of the operating voltage is, for example,
0.9Un-Un, Un are the voltage rating of bus.Certainly, the corresponding voltage of the initial time can also be set according to actual needs
For other values, details are not described herein.
The bus of the present embodiment is any one bus in power supply system.One or more is electrically connected on the bus equipment
A asynchronous machine.
The step 101 specifically can be, and every a preset time, false-start preventing device obtains the real-time voltage of bus,
And compared with voltage corresponding with the initial time of preset time period, difference is obtained.If it is default that difference is greater than or equal to first
Threshold value then judges that the fall of voltage is greater than or equal to the first preset threshold, next can execute step 102.Otherwise,
On the end time point of next preset time period, the current voltage of bus is obtained again, and is judged.The preset time
Section can be set according to actual needs, for example, be less than or equal to 60ms.It is of course also possible to be every within a preset period of time
The voltage of bus is obtained in real time every 5ms or 10ms, and compared with voltage corresponding with the initial time of preset time period, it is poor to obtain
Value, and then judge whether the difference is greater than or equal to the first preset threshold.
Before step 101, false-start preventing device can first determine whether the voltage of bus begins to decline.Specifically sentence
Whether the voltage that disconnected method can be real-time monitoring bus begins lower than the operating voltage of bus, or whether begins lower than bus
Operating voltage fluctuation range minimum value.
First preset threshold of the present embodiment can be set according to actual needs, for example, bus voltage rating 0.02-
0.2 times.
Step 102, it is latched apparatus for fast switching, and judges whether the change amplitude of the voltage of bus is greater than or equal to one
Second preset threshold.Wherein judge whether the change amplitude of the voltage of bus is greater than or equal to the starting of second preset threshold
Time is later than the end time of preset time period.Change amplitude is according between the real-time voltage of bus and a first voltage
What difference obtained.First voltage is to judge that fall is greater than or equal to the reality that first preset threshold obtains later
When voltage.If result be it is yes, then follow the steps 103.
After the fall for the voltage for judging bus is greater than or equal to the first preset threshold, locking first is quickly cut
Changing device, such as the low pressure of locking apparatus for fast switching rise to cut operation and low frequency fastly and rise and cut operation fastly, and then prevent from quickly cutting
Power supply is switched on backup power source by changing device from main power source.
Next judge whether the change amplitude of the voltage of bus is greater than or equal to the second preset threshold, the second default threshold
Value can be determine according to actual needs.
The change amplitude of the present embodiment is to subtract first voltage according to the real-time voltage of bus within a preset period of time to obtain
Difference determine.If difference is positive, indicate that the voltage of bus rises.If difference is negative, the voltage decline of bus is indicated.
When the amplitude of change is that the amplitude that busbar voltage rises is greater than or equal to the second preset threshold, apparatus for fast switching is determined currently
Accident does not occur for main power source.
The first voltage of the present embodiment is less than the corresponding voltage of initial time of preset time period.In the present embodiment, first
Voltage determines in real time after being to be in the judging result of step 101, such as is judging fall more than or equal to one
After a first preset threshold, the voltage on some time point after determining is first voltage, can also will judge the lower range of decrease
Degree is greater than or equal to the voltage obtained at once after the first preset threshold as first voltage.It can specifically set according to actual needs
It is fixed.
The specific implementation of the step 102 may is that
The change amplitude of the voltage of bus is obtained according to the difference between the real-time voltage and first voltage of bus；
Judge whether change amplitude is greater than or equal to the second preset threshold.
That is, false-start preventing device can just obtain the real-time voltage of a bus every an interval time, and according to this
Difference between real-time voltage and first voltage obtains the change amplitude of voltage.If judging, change amplitude is greater than or equal to second
Preset threshold thens follow the steps 103.
Optionally, in the present embodiment, judge whether change amplitude is greater than or equal to the second preset threshold and specifically includes:
Judge whether the absolute value of change amplitude is greater than or equal to the second preset threshold；
If result is yes, it is determined that whether change amplitude is that voltage increases；
If it is determined that the amplitude of change is voltage raising, then judge that change amplitude is greater than or equal to the second preset threshold.
In this method, first determine whether the absolute value of change amplitude is greater than or equal to the second preset threshold.If judgement knot
Fruit be it is no, then again obtain bus real-time voltage, then judge the absolute value of change amplitude whether be greater than or equal to second in advance
If threshold value.If judging, the absolute value of change amplitude is greater than or equal to the second preset threshold, it is determined that voltage is on a declining curve also
It is ascendant trend, that is, determines that voltage decline or voltage increase, this point can difference between real-time voltage and first voltage
The symbol of value judges.If voltage rise, then can determine the voltage for the bus judged in step 101 decline be by
Caused by asynchronous machine starting, and then execute step 103.Decline if voltage, then can choose starting backup power source, or
Further judgement is done, can specifically be selected according to actual needs.
Second preset threshold of the present embodiment can be set according to actual needs, be greater than 0 and be less than or equal to bus
0.2 times of voltage rating.
In the present embodiment, it is latched apparatus for fast switching and judges whether the change amplitude of the voltage of bus is greater than or equal to one
The operation of a second preset threshold can carry out simultaneously.It can also be first latched apparatus for fast switching, then execute the electricity for judging bus
Whether the change amplitude of pressure is greater than or equal to the operation of the operation of second preset threshold.Specific order is without limitation.
Step 103, the blocking of apparatus for fast switching is kept.
That is, false-start preventing device judges that main power source does not break down, blocking device is kept, backup power source is not started.
According to the present embodiment, it is greater than or equal to first in the fall of the voltage for judging bus within a preset period of time
When preset threshold, that is, when there is the case where rapid drawdown, by judging the voltage of bus in next change amplitude, and then determination is
Voltage dip caused by voltage dip caused by main power source is out of order or asynchronous machine start.When judging it is asynchronous machine
Voltage dip caused by starting, then do not start the backup power source of bus connection, and then the mistake of apparatus for fast switching is avoided to start behaviour
Make.Such starting method is quick and easy, will not excessively increase cost.
Embodiment two
The present embodiment does further supplementary explanation to the anti-error starting method of the apparatus for fast switching of embodiment one.
As shown in figure 4, the flow diagram of the anti-error starting method for the apparatus for fast switching of the present embodiment.This anti-error
Dynamic method includes:
Step 201, fall of the voltage of a bus in a preset time period is obtained, and judges fall
Whether it is greater than or equal to first preset threshold, is electrically connected with one or more asynchronous machines on bus.If result be it is yes,
Execute step 202.
The fall of the present embodiment is according to the corresponding voltage of initial time of preset time period and in preset time period
What the difference of interior real-time voltage obtained.The step is identical as step 101, and details are not described herein.
Step 202, it is latched apparatus for fast switching, and judges whether the change amplitude of the voltage of bus is greater than or equal to one
Second preset threshold, wherein the initial time of preset time period, which is later than, judges that fall is greater than or equal to the first preset threshold
End time, change amplitude is according to the difference between bus real-time voltage within a preset period of time and a first voltage
It obtaining, first voltage is to judge that fall is greater than or equal to the real-time voltage that first preset threshold obtains later,
If result be it is yes, then follow the steps 203, if the result is negative, then follow the steps 204.
The step 202 is identical as step 102, and details are not described herein.
Step 203, the blocking of apparatus for fast switching is kept.
That is, false-start preventing device judges that main power source breaks down, the blocking of apparatus for fast switching is kept, is not enabled
Backup power source.
Step 204, judge whether change amplitude is less than or equal to third predetermined threshold value, if result be it is yes, release quick
The locking of switching device.
That is, false-start preventing device judges that main power source breaks down, the locking of apparatus for fast switching is released, and then can make
Apparatus for fast switching can enable backup power source.The third predetermined threshold value can be negative, and e.g. the second preset threshold is born
Number, can also be individually set, can specifically select according to actual needs, details are not described herein.
According to the present embodiment, it is greater than or equal to first in the fall of the voltage for judging bus within a preset period of time
When preset threshold, that is, when there is the case where rapid drawdown, by judging the voltage of bus in next change amplitude, and then determination is
Voltage dip caused by voltage dip caused by main power source is out of order or asynchronous machine start.When judging it is asynchronous machine
Voltage dip caused by starting, then do not start the backup power source of bus connection, and then the mistake of apparatus for fast switching is avoided to start behaviour
Make.In the case where the voltage dip caused by judging that main power source breaks down, then start backup power source, to guarantee equipment just
Often operation.Such starting method is quick and easy, will not excessively increase cost.
Embodiment three
The present embodiment does concrete example explanation to the anti-error starting method of the apparatus for fast switching of above-described embodiment.
In the present embodiment, obtaining fall of the voltage of bus in a preset time period be can specifically include:
Within a preset period of time, the voltage drop-out value an of bus is obtained；
Using the ratio of voltage drop-out value and the specified level pressure of bus as fall；
Wherein, the first preset threshold is the ratio of first voltage and voltage rating.
Correspondingly, change amplitude=(real-time voltage-first voltage of bus)/voltage rating.
The voltage rating of the bus of different vendor is different.In the present embodiment, fall=voltage drop-out value/specified electricity
Pressure changes amplitude=(real-time voltage-first voltage of bus)/voltage rating, can eliminate the specified electricity due to bus in this way
Otherness brought by the difference of pressure.That is, the corresponding starting method of all buses can use identical first preset threshold
And second preset threshold.
In the following, carrying out concrete example explanation.The value range of first preset threshold of the present embodiment be 0.02-0.2, second
The value range of preset threshold is greater than 0 and to be less than or equal to 0.2.
As depicted in figs. 1 and 2, the abscissa in figure is time t, and unit is ms, and ordinate is the real-time acquisition from bus
Voltage U, unit is the voltage rating U of busn, i.e. ordinate indicates the specified of the voltage that obtains in real time from bus and bus
The ratio of voltage.UnormalWhat is represented is the voltage when all devices being electrically connected with bus work normally, i.e. the work electricity of bus
Pressure.What dU1 was indicated is the fall of the voltage of bus.What dU2 was indicated is the change amplitude of the voltage of bus.First voltage is
Uflag, Uflag< Unormal, in the example in Fig. 1 and Fig. 2, it is greater than or equal to first in the fall for the voltage for determining bus
After preset threshold, using the real-time voltage of 10ms acquisition.
If false-start preventing device identifies the voltage of bus from UnormalPlace is begun to decline.Then, within a preset period of time,
Obtain the voltage U of bus.Apparatus for fast switching is by U and UnormalIt is compared, obtains the fall dU1 of the voltage of bus, i.e.,
DU1=Unormal—U.If judging the first preset threshold of dU1 >, it is latched apparatus for fast switching, and is obtained after 10 ms female
The voltage of line is as first voltage Uflag.Within the next time, obtain the real-time voltage of bus, and by the real-time voltage with
UflagChange amplitude dU2, i.e. dU2=U-U are obtained after subtracting each otherflag。
When judging | dU2 | when being greater than or equal to the second preset threshold, determine that the value of dU2 is positive or is negative.DU2's
Value is positive, then it represents that voltage increases, and keeps the locking of apparatus for fast switching, and then keep the inactive state of backup power source.dU2
Value be negative, then it represents that voltage decline, the locking of apparatus for fast switching is released, so that apparatus for fast switching can start standby electricity
Source.
Example IV
The present embodiment provides a kind of false-start preventing devices of apparatus for fast switching, for executing anti-error of above-described embodiment
Dynamic method.
The false-start preventing device of the apparatus for fast switching includes 301,302 and of first judgment module of an acquisition module
One determining module 303.Wherein, it obtains under module 301 is used to obtain the voltage of a bus in a preset time period
Range of decrease degree, fall are the corresponding voltage of initial time and real-time voltage within a preset period of time according to preset time period
Difference obtain；It is used to judge whether fall to be greater than or equal to first preset threshold to first judgment module 302,
If the determination result is YES, then a determining module 303 is triggered；It is used to be latched apparatus for fast switching to determining module 303, and judges
Whether the change amplitude of the voltage of bus is greater than or equal to second preset threshold, wherein judging the change width of the voltage of bus
The initial time whether degree is greater than or equal to second preset threshold is later than the preset time period end time, and change amplitude is root
It is obtained according to the difference between the real-time voltage of bus and a first voltage, first voltage is to judge and judge fall
The real-time voltage obtained after more than or equal to one the first preset threshold, if result be it is yes, keep apparatus for fast switching
Blocking.
Optionally it is determined that module 303 is also used to:
Judge whether change amplitude is less than or equal to third predetermined threshold value, third predetermined threshold value is negative；
If result be it is yes, release the locking of apparatus for fast switching.
Optionally, first judgment module 302 is specifically used for:
Change amplitude according to the voltage that the difference between the real-time voltage and first voltage of bus obtains bus；
Judge whether change amplitude is greater than or equal to the second preset threshold.
Optionally, first judgment module judges whether change amplitude is greater than or equal to the operation of the second preset threshold in execution
When, it specifically includes:
Judge whether the absolute value of change amplitude is greater than or equal to the second preset threshold；
If result is yes, it is determined that whether change amplitude is that voltage increases；
If it is determined that the amplitude of change is voltage raising, then judge that change amplitude is greater than or equal to the second preset threshold.
Optionally, module 301 is obtained to be specifically used for:
Within a preset period of time, the voltage drop-out value an of bus is obtained；
Using the ratio of voltage drop-out value and the specified level pressure of bus as fall；
Wherein, the first preset threshold is the ratio of first voltage and voltage rating.
Optionally, change amplitude=(real-time voltage-first voltage of bus)/voltage rating.
The anti-error starting method of the modules of the present embodiment is identical as previous embodiment, and details are not described herein.
The operating voltage of the present embodiment is the voltage of bus when each equipment of electric connecting busbar works normally.
According to the false-start preventing device of the apparatus for fast switching of the present embodiment, in the voltage for judging bus in preset time
When fall in section is greater than or equal to the first preset threshold, that is, when there is the case where rapid drawdown, by the voltage for judging bus
In next change amplitude, and then determination is that voltage dip caused by main power source is out of order or asynchronous machine starting cause
Voltage dip, when judge be asynchronous machine start caused by voltage dip, then do not start bus connection backup power source, into
And avoid the mistake start-up function of apparatus for fast switching.
The invention of this reality also provides a kind of false-start preventing device of apparatus for fast switching, including at least one processor and at least
One processor.Wherein, memory is for storing instruction.The instruction execution that processor is used to be stored according to memory is aforementioned any
The anti-error starting method of apparatus for fast switching described in embodiment.
The embodiment of the present invention also provides a kind of machine readable media.Being stored with machine in the machine readable storage medium can
Reading instruction, when being executed by a machine, machine executes to be switched fast machine readable instructions described in aforementioned any embodiment
The anti-error starting method of device.
Machine readable instructions are stored on the machine readable media, which makes when being executed by processor
Processor executes any method above-mentioned.Specifically, system or device equipped with machine readable media can be provided, at this
It stores the software program code for realizing the function of any embodiment in above-described embodiment on machine readable media, and makes the system
Or the computer or processor of device read and execute the machine readable instructions being stored in the machine readable media.
In this case, it can be achieved any one in above-described embodiment from the program code itself that machine readable media is read
The function of embodiment, thus the machine readable media of machine readable code and storage machine readable code constitute it is of the invention
A part.
The embodiment of machine readable media include floppy disk, hard disk, magneto-optic disk, CD (such as CD-ROM, CD-R, CD-RW,
DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), tape, non-volatile memory card and ROM.It selectively, can be by communication network
Network download program code from server computer or on cloud.
It will be appreciated by those skilled in the art that each embodiment disclosed above can be in the situation without departing from invention essence
Under make various changes and modifications.Therefore, protection scope of the present invention should be defined by the appended claims.
It should be noted that step and module not all in above-mentioned each process and each system construction drawing is all necessary
, certain steps or module can be ignored according to the actual needs.Each step execution sequence be not it is fixed, can be according to need
It is adjusted.System structure described in the various embodiments described above can be physical structure, be also possible to logical construction, that is, have
A little modules may be realized by same physical entity, be realized alternatively, some modules may divide by multiple physical entities, alternatively, can be with
It is realized jointly by certain components in multiple autonomous devices.
In the above various embodiments, hardware cell mechanically or can be realized electrically.For example, a hardware list
Member may include permanent dedicated circuit or logic (such as special processor, FPGA or ASIC) to complete corresponding operating.Firmly
Part unit can also include programmable logic or circuit (such as general processor or other programmable processors), can by software into
The interim setting of row is to complete corresponding operating.Concrete implementation mode (mechanical system or dedicated permanent circuit or is faced
When the circuit that is arranged) can be determined based on cost and temporal consideration.
Detailed displaying and explanation carried out to the present invention above by attached drawing and preferred embodiment, however the present invention is not limited to
These embodiments having revealed that, base could be aware that with above-mentioned multiple embodiment those skilled in the art, can combine above-mentioned difference
Code audit means in embodiment obtain the more embodiments of the present invention, these embodiments also protection scope of the present invention it
It is interior.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (16)
1. the anti-error starting method of apparatus for fast switching characterized by comprising
Fall of the voltage of a bus in a preset time period is obtained, and judges whether the fall is greater than
Or be equal to first preset threshold, the fall be according to the corresponding voltage of initial time of the preset time period with
What the difference of real-time voltage within a preset period of time obtained；
If result be it is yes, be latched the apparatus for fast switching, and judge whether the change amplitude of the voltage of the bus is greater than
Or it is equal to second preset threshold, wherein whether the change amplitude of the voltage for judging the bus is greater than or equal to one
The initial time of second preset threshold is later than the end time of the preset time period, and the change amplitude is according to the bus
Real-time voltage and a first voltage between difference obtain, the first voltage be judge that the fall is greater than
Or equal to the real-time voltage obtained after first preset threshold；
If result be it is yes, keep the blocking of the apparatus for fast switching.
2. anti-error starting method according to claim 1, which is characterized in that further include:
Judge whether the change amplitude is less than or equal to the third predetermined threshold value, the third predetermined threshold value is negative；
If result be it is yes, release the locking of the apparatus for fast switching.
3. anti-error starting method according to claim 1, which is characterized in that the change of the voltage of the judgement bus
Whether amplitude is greater than or equal to second preset threshold
Change described in the voltage for obtaining the bus according to the difference between the real-time voltage of the bus and the first voltage
Amplitude；
Judge whether the change amplitude is greater than or equal to the second preset threshold.
4. anti-error starting method according to claim 3, which is characterized in that described to judge whether the change amplitude is greater than
Or equal to one the second preset threshold specifically includes:
Judge whether the absolute value of the change amplitude is greater than or equal to second preset threshold；
If result is yes, it is determined that whether the change amplitude is that voltage increases；
If it is determined that the change amplitude is voltage raising, then judge that the change amplitude is greater than or equal to the second default threshold
Value.
5. anti-error starting method described in any one of -4 according to claim 1, which is characterized in that described one bus of acquisition
Fall of the voltage in a preset time period include:
In the preset time period, the voltage drop-out value an of bus is obtained；
Using the ratio of the voltage drop-out value and the voltage rating of the bus as the fall；
Wherein, first preset threshold is the ratio of the first voltage and the voltage rating.
6. anti-error starting method according to claim 5, which is characterized in that the change amplitude is according to the bus
What the difference between real-time voltage and a first voltage obtained, comprising:
The change amplitude=(real-time voltage-of the bus first voltage)/voltage rating.
7. anti-error starting method according to claim 1, which is characterized in that the initial time of the preset time period is corresponding
Voltage be the voltage for being electrically connected bus when each equipment of the bus works normally.
8. the false-start preventing device of apparatus for fast switching characterized by comprising
One acquisition module is used to obtain fall of the voltage of a bus in a preset time period, under described
Range of decrease degree is the difference according to the corresponding voltage of initial time and real-time voltage within a preset period of time of the preset time period
What value obtained；
One first judgment module, is used to judge whether the fall to be greater than or equal to first preset threshold, if
Judging result be it is yes, then trigger a determining module；
The determining module is used to be latched the apparatus for fast switching, and judges that the change amplitude of the voltage of the bus is
It is no to be greater than or equal to second preset threshold, wherein whether the change amplitude of the voltage for judging the bus is greater than or waits
It is later than the end time of the preset time period in the initial time of second preset threshold, the change amplitude is according to institute
State what bus was obtained in the real-time voltage in the preset time period and the difference between a first voltage, the first voltage
To judge the real-time voltage obtained after the fall is greater than or equal to first preset threshold, if result is
It is then to keep the blocking of the apparatus for fast switching.
9. false-start preventing device according to claim 8, which is characterized in that the determining module is also used to:
Judge whether the change amplitude is less than or equal to the third predetermined threshold value, the third predetermined threshold value is negative；
If result be it is yes, release the locking of the apparatus for fast switching.
10. false-start preventing device according to claim 8, which is characterized in that the first judgment module is specifically used for:
Obtain the real-time voltage of the bus；
Change amplitude described in the voltage for obtaining the bus according to the difference between the real-time voltage and the first voltage；
Judge whether the change amplitude is greater than or equal to the second preset threshold.
11. false-start preventing device according to claim 10, which is characterized in that the first judgment module judges institute in execution
When stating change amplitude and whether being greater than or equal to the operation of the second preset threshold, specifically include:
Judge whether the absolute value of the change amplitude is greater than or equal to the second preset threshold；
If result is yes, it is determined that whether the change amplitude is that voltage increases；
If it is determined that the change amplitude is voltage raising, then judge that the change amplitude is greater than or equal to the second default threshold
Value.
12. the false-start preventing device according to any one of claim 8-11, which is characterized in that the acquisition module is specific
For:
In the preset time period, the voltage drop-out value an of bus is obtained；
Using the ratio of the voltage drop-out value and the specified level pressure of the bus as fall；
Wherein, first preset threshold is the ratio of the first voltage and the voltage rating.
13. false-start preventing device according to claim 12, which is characterized in that the change amplitude=(bus
Real-time voltage-the first voltage)/the voltage rating.
14. false-start preventing device according to claim 8, which is characterized in that the initial time pair of the preset time period
The voltage answered is the voltage for being electrically connected bus when each equipment of the bus works normally.
15. the false-start preventing device of apparatus for fast switching characterized by comprising
At least one processor, for storing instruction；
At least one processor, any one of instruction execution such as claim 1-7 for being used to be stored according to memory institute
The anti-error starting method for the apparatus for fast switching stated.
16. machine readable storage medium, which is characterized in that machine readable instructions are stored in the machine readable storage medium,
When being executed by a machine, the machine is executed as of any of claims 1-7 fast the machine readable instructions
The anti-error starting method of speed switching device.
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| CN109428387B (en) | 2020-05-26 |
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