CN109799429A - Arcing condition judgement method and device - Google Patents
Arcing condition judgement method and device Download PDFInfo
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- CN109799429A CN109799429A CN201811535391.1A CN201811535391A CN109799429A CN 109799429 A CN109799429 A CN 109799429A CN 201811535391 A CN201811535391 A CN 201811535391A CN 109799429 A CN109799429 A CN 109799429A
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Abstract
The disclosure provides a kind of arcing condition judgement method and device.Arcing condition judgement method includes: the m group measured value in the preset period of time that short-circuit stage starts on acquisition circuit cable；The functional relation of interference voltage and electric current is determined according to the m group measured value；Real-time interference voltage is determined according to the real-time current in the functional relation and the return cable after the preset period of time；Arc voltage is determined with the real-time interference voltage according to the real-time voltage in the return cable；Judge that system enters arcing state when the arc voltage is greater than preset value.The arcing condition judgement method that the disclosure provides also can accurate judgement arcing state when cable non-rectilinear is placed.
Description
Technical field
This disclosure relates to be welded technical field, cable non-rectilinear setting state can be applied in particular to one kind
Arcing condition judgement method and device.
Background technique
In welding field, due to needing to acquire weldingvoltage using fine waveform control, default cable in welding is
It is fully deployed.But in some special occasions, user can get up weld, as shown in Figure 1A, fold at this time cable reel
Cable forms a big inductance, forms equivalent circuit as shown in Figure 1B.As shown in Figure 1B, the circuit electricity detected at this time
Press u=i × R+Ldi/dt+ua, wherein uaIt is virtual voltage.If it is very big to can see inductance, even if electric current has very little
Variation, also results in the mutation of the voltage u of acquisition, is difficult to carry out accurate arcing judgement in this case.
If voltage acquisition point wire feeder on one side, as shown in Figure 2 A, cable and Voltage Feedback line coil (dotted line together
For Voltage Feedback line), equivalent circuit at this time is as shown in Figure 2 B.In fig. 2b, although the inductance generated without cable reel coil
Influence, but cable and Voltage Feedback line constitute one " transformer ", will lead to the voltage u=u of acquisition1+ua, wherein u1
For the secondary voltage of this " transformer ", the accuracy that short-circuit arcing determines also will affect.
In actual use, the diameter of cable reel coil and coil number are not fixed, so being difficult by measuring in advance
The mode of inductance or " transformer " no-load voltage ratio extrapolates arc voltage.Therefore, it is necessary to one kind can adapt to actual use scene, gram
Take the arcing determination method of error caused by cable non-deployed condition.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of arcing condition judgement method and arcing state determining apparatus, at least existing
Cable caused by the limitation and defect due to the relevant technologies is overcome non-fully to be unfolded that arcing is caused to determine occur to a certain extent
Exception, influences the problem of welding effect at waveform control disorder.
According to the first aspect of the embodiments of the present disclosure, a kind of arcing condition judgement method is provided, comprising: open in short-circuit stage
M group measured value in the preset period of time of beginning on acquisition circuit cable；Interference voltage and electric current are determined according to the m group measured value
Functional relation；It is determined in fact after the preset period of time according to the real-time current in the functional relation and the return cable
When interference voltage；Arc voltage is determined with the real-time interference voltage according to the real-time voltage in the return cable；Described
Arc voltage judges that system enters arcing state when being greater than preset value.
In a kind of exemplary embodiment of the disclosure, the measured value includes voltage value, current value and current changing rate.
It is described that interference voltage and electric current are determined according to the m group measured value in a kind of exemplary embodiment of the disclosure
Functional relation include:
Determine that current changing rate is 0 one group of measured value in the m group measured value, according to the voltage in this group of measured value
The ratio of value and current value determines loop resistance r；
Bring the m group measured value into formula Un=U1n+Uan=f (In, dIn)+r·In, to form m formula,
In, Un、In、dInIt is voltage value, current value, the current changing rate in n-th group measured value, U1 respectivelynAnd UanIt is described n-th respectively
The corresponding interference voltage of group measured value and arc voltage；
U1 is determined according to the m formulan=f (In, dIn) expression formula.
It is described that U1 is determined according to the m formula in a kind of exemplary embodiment of the disclosuren=f (In, dIn)
Expression formula includes:
The m formula is calculated with the multiple expression formulas of determination using default regression analysis software；
It is selected in the multiple expression formula with the highest expression formula of the matching degree of the m group data as U1n=f
(In, dIn) expression formula.
In a kind of exemplary embodiment of the disclosure, the real-time voltage according in the return cable and the reality
When interference voltage determine that arc voltage includes:
The difference of the real-time voltage and the interference voltage is determined as the arc voltage.
In a kind of exemplary embodiment of the disclosure, the start time point of the preset period of time is the short-circuit stage
Start time point, the length of the preset period of time is between 0.5~1.2ms.
In a kind of exemplary embodiment of the disclosure, the preset period of time includes the first time that current changing rate is 0
Section and current changing rate are not 0 second time period, and the length of the second time period is greater than the length of the first time period.
According to the second aspect of an embodiment of the present disclosure, a kind of arcing state determining apparatus is provided, comprising:
Data acquisition module is set as the m group actual measurement in the preset period of time that short-circuit stage starts on acquisition circuit cable
Value；
Function Fitting module is set as determining the functional relation of interference voltage and electric current according to the m group measured value；
Interference voltage determining module is set as after the preset period of time according to the functional relation and circuit electricity
Real-time current on cable determines real-time interference voltage；
Voltage correction module is set as being determined according to the real-time voltage in the return cable with the real-time interference voltage
Arc voltage；
Arcing judgment module is set as judging that system enters arcing state when the arc voltage is greater than preset value.
According to the third aspect of the disclosure, a kind of electronic equipment is provided, comprising: memory；And it is coupled to affiliated storage
The processor of device, the processor is configured to the instruction based on storage in the memory, executes such as above-mentioned any one
The method.
According to the fourth aspect of the disclosure, a kind of computer readable storage medium is provided, program is stored thereon with, the program
The arcing condition judgement method as described in above-mentioned any one is realized when being executed by processor.
The arcing determination method that the embodiment of the present disclosure provides passes through in a period of time measuring circuit that short-circuit stage starts
The relationship of interference voltage and electric current, and real-time measurement interference voltage, correction real-time detection voltage in subsequent measurement, can overcome
Placement of the user to the non-fully expansion mode of cable in scene is actually used, can arcing be kept to judge under several scenes
Accuracy.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Figure 1A and Figure 1B is a kind of schematic diagram of interference voltage under usage scenario.
Fig. 2A and Fig. 2 B is the schematic diagram of interference voltage under another usage scenario.
Fig. 3 is the flow chart of arcing condition judgement method in disclosure exemplary embodiment.
Fig. 4 is the schematic diagram of preset period of time in disclosure exemplary embodiment.
Fig. 5 is a sub-process figure of arcing condition judgement method in disclosure exemplary embodiment.
Fig. 6 is a kind of block diagram of arcing state determining apparatus in one exemplary embodiment of the disclosure.
Fig. 7 is the block diagram of a kind of electronic equipment in one exemplary embodiment of the disclosure.
Fig. 8 is a kind of schematic diagram of computer readable storage medium in one exemplary embodiment of the disclosure.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Described feature, knot
Structure or characteristic can be incorporated in any suitable manner in one or more embodiments.In the following description, it provides perhaps
More details fully understand embodiment of the present disclosure to provide.It will be appreciated, however, by one skilled in the art that can
It is omitted with technical solution of the disclosure one or more in the specific detail, or others side can be used
Method, constituent element, device, step etc..In other cases, be not shown in detail or describe known solution to avoid a presumptuous guest usurps the role of the host and
So that all aspects of this disclosure thicken.
In addition, attached drawing is only the schematic illustrations of the disclosure, identical appended drawing reference indicates same or similar portion in figure
Point, thus repetition thereof will be omitted.Some block diagrams shown in the drawings are functional entitys, not necessarily necessary and object
The entity managed or be logically independent is corresponding.These functional entitys can be realized using software form, or in one or more
These functional entitys are realized in hardware module or integrated circuit, or in heterogeneous networks and/or processor device and/or microcontroller
These functional entitys are realized in device.
Disclosure example embodiment is described in detail with reference to the accompanying drawing.
Fig. 3 schematically shows the flow chart of arcing condition judgement method in disclosure exemplary embodiment.With reference to Fig. 3, combustion
Arc condition judgement method 100 may include:
Step S102, the m group measured value in the preset period of time that short-circuit stage starts on acquisition circuit cable；
Step S104 determines the functional relation of interference voltage and electric current according to the m group measured value；
Step S106, according to the real-time current in the functional relation and the return cable after the preset period of time
Determine real-time interference voltage；
Step S108 determines arc voltage with the real-time interference voltage according to the real-time voltage in the return cable；
Step S110 judges that system enters arcing state when the arc voltage is greater than preset value.
The arcing determination method that the embodiment of the present disclosure provides passes through in a period of time measuring circuit that short-circuit stage starts
The relationship of interference voltage and electric current, and real-time measurement interference voltage, correction real-time detection voltage in subsequent measurement, can overcome
Placement of the user to the non-fully expansion mode of cable in scene is actually used, can arcing be kept to judge under several scenes
Accuracy.
In the following, each step to arcing condition judgement method 100 is described in detail.
M group measured value in step S102, in the preset period of time that short-circuit stage starts on acquisition circuit cable.
Fig. 4 is the schematic diagram of preset period of time in the embodiment of the present disclosure.
With reference to Fig. 4, preset period of time T, which can be set to maximum probability, will not occur the period of arcing state.In some embodiments
In, presetting point at the beginning of stage T is point A at the beginning of short-circuit stage, the length of preset period of time 0.5~1.2ms it
Between.In some other embodiment, put at the beginning of the default stage can also in the other times of short-circuit stage, if
Arcing state will not be entered in the default stage.Those skilled in the art can voluntarily adjust the setting of preset period of time.
In preset period of time T, the time point corresponding measured value can be acquired on m time point, it is subsequent in order to guarantee
The reliability of fitting result can obtain optimal fitting result under the present circumstances by adjusting the numerical value of m.In addition, can
With the interval at m time point of self-setting, in some embodiments, the interval at m time point can be all the same.
It to sum up analyzes, in the embodiments of the present disclosure, it is assumed that interference voltage and size of current, current changing rate, measurement voltage
It is related, therefore, current value, current changing rate and voltage value are set by measured value.In other embodiments, art technology
Personnel can also add other measured values to correct calculated result.
In step S104, the functional relation of interference voltage and electric current is determined according to the m group measured value.
Fig. 5 is the sub-process figure of step S104.
With reference to Fig. 5, in one embodiment, step S104 may include:
Step S1041 determines that current changing rate is 0 one group of measured value in m group measured value, according in this group of measured value
Voltage value and the ratio of current value determine loop resistance r；
Step S1042 brings m group measured value into formula Un=U1n+Uan=f (In, dIn)+r·In, to form m public affairs
Formula, wherein Un、In、dInIt is voltage value, current value, the current changing rate in n-th group measured value, U1 respectivelynAnd UanIt is respectively
The corresponding interference voltage of n group measured value and arc voltage；
Step S1043 determines U1 according to m formulan=f (In, dIn) expression formula.
With reference to Fig. 4, in one embodiment of the present disclosure, preset period of time includes the first time period that current changing rate is 0
T1 and current changing rate are not 0 second time period T2, and the length of second time period is greater than the length of first time period.
It first can be in T1 stage (about 0.05-0.1ms), one group of measured value for being 0 by measured value current changing rate
Voltage value and the ratio of current value determine loop resistance (loop resistance r can change in the short-circuit stage later period), T1 rank
The electric current of section is definite value, and the time is very short.
In the embodiments of the present disclosure, the expression formula that interference voltage U1 is arranged is U1=f (In, dIn), that is, assume interference voltage
U1 is related to current value and current changing rate.Since the form that user places cable not can determine that the disclosure does not limit f
(In, dIn) expression formula concrete form, but determined by fitting result.
M group measured value can be brought into above-mentioned formula, to form the input data of regression analysis software, keep regression analysis soft
Part can be fitted the m formula by common fitting mode, determine f (In, dIn) multiple expression formulas.Finally, can be with
It is selected in multiple expression formulas with the highest expression formula of m group measured value registration as f (In, dIn) i.e. interference voltage U1
Expression formula.
It should be noted that can produce multiple fitting results due to being fitted to data, and input data difference is quasi-
It is also different to close result, therefore judge that arcing state requires above-mentioned fit procedure before every time, to determine in current environment, cable
The relationship of interference voltage and electric current and current changing rate under state.
In step S106, according to the real-time electricity in the functional relation and the return cable after the preset period of time
Stream determines real-time interference voltage.
After the preset period of time, by measurement real-time current I, real-time current change rate dI and U1 can be carried it into
The expression formula of=f (I, dI) calculates real-time interference voltage U1.
In step S108, electric arc electricity is determined with the real-time interference voltage according to the real-time voltage in the return cable
Pressure.
Due to the short-circuit later period, loop resistance r can be varied widely, so arc voltage cannot be obtained by Ua=rI
Ua.In the embodiments of the present disclosure, arc voltage Ua is set to the difference of real-time voltage U Yu interference voltage U1, passes through formula Ua
=U-U1=U-f (I, dI) measures current arc voltage value.
Since measurement result eliminates the influence of interference voltage, measurement result can accurately be given expression under a variety of cable forms
True arc voltage, improve the measurement accuracy of arc voltage.
In other embodiments, it can also be set the relationship of arc voltage and interference voltage to according to cable placement status
Other forms.
In step S110, judge that system enters arcing state when the arc voltage is greater than preset value.
After the true arc voltage implemented, it can judge whether system enters arcing state according to the arc voltage.
The preset value for wherein entering arcing state for decision-making system can be by those skilled in the art's self-setting.
Corresponding to above method embodiment, the disclosure also provides a kind of arcing state determining apparatus, can be used in execution
State embodiment of the method.
Fig. 6 schematically shows a kind of block diagram of arcing state determining apparatus in one exemplary embodiment of the disclosure.
With reference to Fig. 6, arcing state determining apparatus 600 may include:
Data acquisition module 602, the m group being set as in the preset period of time that short-circuit stage starts on acquisition circuit cable are real
Measured value；
Function Fitting module 604 is set as determining the functional relation of interference voltage and electric current according to the m group measured value；
Interference voltage determining module 606 is set as after the preset period of time according to the functional relation and described time
Real-time current on the cable of road determines real-time interference voltage；
Voltage correction module 608 is set as according to the real-time voltage and the real-time interference voltage in the return cable
Determine arc voltage；
Arcing judgment module 610 is set as judging that system enters arcing state when the arc voltage is greater than preset value.
In a kind of exemplary embodiment of the disclosure, the measured value includes voltage value, current value and current changing rate.
In a kind of exemplary embodiment of the disclosure, Function Fitting module 604 is arranged are as follows:
Determine that current changing rate is 0 one group of measured value in the m group measured value, according to the voltage in this group of measured value
The ratio of value and current value determines loop resistance r；
Bring the m group measured value into formula Un=U1n+Uan=f (In, dIn)+r·In, to form m formula,
In, Un、In、dInIt is voltage value, current value, the current changing rate in n-th group measured value, U1 respectivelynAnd UanIt is described n-th respectively
The corresponding interference voltage of group measured value and arc voltage；
U1 is determined according to the m formulan=f (In, dIn) expression formula.
It is described that U1 is determined according to the m formula in a kind of exemplary embodiment of the disclosuren=f (In, dIn)
Expression formula includes:
The m formula is calculated with the multiple expression formulas of determination using default regression analysis software；
It is selected in the multiple expression formula with the highest expression formula of the matching degree of the m group data as U1n=f
(In, dIn) expression formula.
In a kind of exemplary embodiment of the disclosure, voltage correction module 608 is arranged are as follows:
The difference of the real-time voltage and the interference voltage is determined as the arc voltage.
In a kind of exemplary embodiment of the disclosure, the start time point of the preset period of time is the short-circuit stage
Start time point, the length of the preset period of time is between 0.5~1.2ms.
In a kind of exemplary embodiment of the disclosure, the length of the length of the preset period of time and the short-circuit period at
Direct ratio.
Since each function of device 600 has been described in detail in its corresponding embodiment of the method, the disclosure in this not
It repeats again.
It should be noted that although being referred to several modules or list for acting the equipment executed in the above detailed description
Member, but this division is not enforceable.In fact, according to embodiment of the present disclosure, it is above-described two or more
Module or the feature and function of unit can embody in a module or unit.Conversely, an above-described mould
The feature and function of block or unit can be to be embodied by multiple modules or unit with further division.
In an exemplary embodiment of the disclosure, a kind of electronic equipment that can be realized the above method is additionally provided.
Person of ordinary skill in the field it is understood that various aspects of the invention can be implemented as system, method or
Program product.Therefore, various aspects of the invention can be embodied in the following forms, it may be assumed that complete hardware embodiment, complete
The embodiment combined in terms of full Software Implementation (including firmware, microcode etc.) or hardware and software, can unite here
Referred to as circuit, " module " or " system ".
The electronic equipment 700 of this embodiment according to the present invention is described referring to Fig. 7.The electronics that Fig. 7 is shown
Equipment 700 is only an example, should not function to the embodiment of the present invention and use scope bring any restrictions.
As shown in fig. 7, electronic equipment 700 is showed in the form of universal computing device.The component of electronic equipment 700 can be with
Including but not limited to: at least one above-mentioned processing unit 710, at least one above-mentioned storage unit 720, the different system components of connection
The bus 730 of (including storage unit 720 and processing unit 710).
Wherein, the storage unit is stored with program code, and said program code can be held by the processing unit 710
Row, so that various according to the present invention described in the execution of the processing unit 710 above-mentioned " illustrative methods " part of this specification
The step of illustrative embodiments.For example, the processing unit 710 can execute step S102 as shown in fig. 1: in short circuit
M group measured value in the preset period of time that stage starts on acquisition circuit cable；Step S104: it is determined according to the m group measured value
The functional relation of interference voltage and electric current；Step S106: according to the functional relation and described time after the preset period of time
Real-time current on the cable of road determines real-time interference voltage；Step S108: according in the return cable real-time voltage and institute
It states real-time interference voltage and determines arc voltage.
Storage unit 720 may include the readable medium of volatile memory cell form, such as Random Access Storage Unit
(RAM) 7201 and/or cache memory unit 7202, it can further include read-only memory unit (ROM) 7203.
Storage unit 720 can also include program/utility with one group of (at least one) program module 7205
7204, such program module 7205 includes but is not limited to: operating system, one or more application program, other program moulds
It may include the realization of network environment in block and program data, each of these examples or certain combination.
Bus 730 can be to indicate one of a few class bus structures or a variety of, including storage unit bus or storage
Cell controller, peripheral bus, graphics acceleration port, processing unit use any bus structures in a variety of bus structures
Local bus.
Electronic equipment 700 can also be with one or more external equipments 800 (such as keyboard, sensing equipment, bluetooth equipment
Deng) communication, can also be enabled a user to one or more equipment interact with the electronic equipment 700 communicate, and/or with make
Any equipment (such as the router, modulation /demodulation that the electronic equipment 700 can be communicated with one or more of the other calculating equipment
Device etc.) communication.This communication can be carried out by input/output (I/O) interface 750.Also, electronic equipment 700 can be with
By network adapter 760 and one or more network (such as local area network (LAN), wide area network (WAN) and/or public network,
Such as internet) communication.As shown, network adapter 760 is communicated by bus 730 with other modules of electronic equipment 700.
It should be understood that although not shown in the drawings, other hardware and/or software module can not used in conjunction with electronic equipment 700, including but not
Be limited to: microcode, device driver, redundant processing unit, external disk drive array, RAID system, tape drive and
Data backup storage system etc..
Through the above description of the embodiments, those skilled in the art is it can be readily appreciated that example described herein is implemented
Mode can also be realized by software realization in such a way that software is in conjunction with necessary hardware.Therefore, according to the disclosure
The technical solution of embodiment can be embodied in the form of software products, which can store non-volatile at one
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are so that a calculating
Equipment (can be personal computer, server, terminal installation or network equipment etc.) is executed according to disclosure embodiment
Method.
In an exemplary embodiment of the disclosure, a kind of computer readable storage medium is additionally provided, energy is stored thereon with
Enough realize the program product of this specification above method.In some possible embodiments, various aspects of the invention may be used also
In the form of being embodied as a kind of program product comprising program code, when described program product is run on the terminal device, institute
Program code is stated for executing the terminal device described in above-mentioned " illustrative methods " part of this specification according to this hair
The step of bright various illustrative embodiments.
Refering to what is shown in Fig. 8, describing the program product for realizing the above method of embodiment according to the present invention
900, can using portable compact disc read only memory (CD-ROM) and including program code, and can in terminal device,
Such as it is run on PC.However, program product of the invention is without being limited thereto, in this document, readable storage medium storing program for executing can be with
To be any include or the tangible medium of storage program, the program can be commanded execution system, device or device use or
It is in connection.
Described program product can be using any combination of one or more readable mediums.Readable medium can be readable letter
Number medium or readable storage medium storing program for executing.Readable storage medium storing program for executing for example can be but be not limited to electricity, magnetic, optical, electromagnetic, infrared ray or
System, device or the device of semiconductor, or any above combination.The more specific example of readable storage medium storing program for executing is (non exhaustive
List) include: electrical connection with one or more conducting wires, portable disc, hard disk, random access memory (RAM), read-only
Memory (ROM), erasable programmable read only memory (EPROM or flash memory), optical fiber, portable compact disc read only memory
(CD-ROM), light storage device, magnetic memory device or above-mentioned any appropriate combination.
Computer-readable signal media may include in a base band or as carrier wave a part propagate data-signal,
In carry readable program code.The data-signal of this propagation can take various forms, including but not limited to electromagnetic signal,
Optical signal or above-mentioned any appropriate combination.Readable signal medium can also be any readable Jie other than readable storage medium storing program for executing
Matter, the readable medium can send, propagate or transmit for by instruction execution system, device or device use or and its
The program of combined use.
The program code for including on readable medium can transmit with any suitable medium, including but not limited to wirelessly, have
Line, optical cable, RF etc. or above-mentioned any appropriate combination.
The program for executing operation of the present invention can be write with any combination of one or more programming languages
Code, described program design language include object oriented program language-Java, C++ etc., further include conventional
Procedural programming language-such as " C " language or similar programming language.Program code can be fully in user
It calculates and executes in equipment, partly executes on a user device, being executed as an independent software package, partially in user's calculating
Upper side point is executed on a remote computing or is executed in remote computing device or server completely.It is being related to far
Journey calculates in the situation of equipment, and remote computing device can pass through the network of any kind, including local area network (LAN) or wide area network
(WAN), it is connected to user calculating equipment, or, it may be connected to external computing device (such as utilize ISP
To be connected by internet).
In addition, above-mentioned attached drawing is only the schematic theory of processing included by method according to an exemplary embodiment of the present invention
It is bright, rather than limit purpose.It can be readily appreciated that the time that above-mentioned processing shown in the drawings did not indicated or limited these processing is suitable
Sequence.In addition, be also easy to understand, these processing, which can be, for example either synchronously or asynchronously to be executed in multiple modules.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope of the disclosure and design are wanted by right
It asks and points out.
Claims (10)
1. a kind of arcing condition judgement method characterized by comprising
M group measured value in the preset period of time that short-circuit stage starts on acquisition circuit cable；
The functional relation of interference voltage and electric current is determined according to the m group measured value；
Interference in real time is determined according to the real-time current in the functional relation and the return cable after the preset period of time
Voltage；
Arc voltage is determined with the real-time interference voltage according to the real-time voltage in the return cable；
Judge that system enters arcing state when the arc voltage is greater than preset value.
2. arcing condition judgement method as described in claim 1, which is characterized in that the measured value includes voltage value, electric current
Value and current changing rate.
3. arcing condition judgement method as claimed in claim 2, which is characterized in that described to be determined according to the m group measured value
The functional relation of interference voltage and electric current includes:
In the m group measured value determine current changing rate be 0 one group of measured value, according in this group of measured value voltage value with
The ratio of current value determines loop resistance r；
Bring the m group measured value into formula Un=U1n+Uan=f (In,dIn)+r·In, to form m formula, wherein Un、
In、dInIt is voltage value, current value, the current changing rate in n-th group measured value, U1 respectivelynAnd UanIt is that the n-th group is real respectively
The corresponding interference voltage of measured value and arc voltage；
U1 is determined according to the m formulan=f (In, dIn) expression formula.
4. arcing condition judgement method as claimed in claim 3, which is characterized in that described to determine U1 according to the m formulan
=f (In, dIn) expression formula include:
The m formula is calculated with the multiple expression formulas of determination using default regression analysis software；
It is selected in the multiple expression formula with the highest expression formula of the matching degree of the m group measured value as U1n=f
The expression formula of (In, dIn).
5. such as the described in any item arcing condition judgement methods of Claims 1 to 4, which is characterized in that described according to the circuit
Real-time voltage on cable determines that arc voltage includes: with the real-time interference voltage
The difference of the real-time voltage and the interference voltage is determined as the arc voltage.
6. arcing condition judgement method as described in claim 1, which is characterized in that the start time point of the preset period of time is
The start time point of the short-circuit stage, the length of the preset period of time is between 0.5~1.2ms.
7. arcing condition judgement method as claimed in claim 6, which is characterized in that the preset period of time includes current changing rate
First time period and current changing rate for 0 are not 0 second time period, and the length of the second time period is greater than described first
The length of period.
8. a kind of arcing state determining apparatus characterized by comprising
Data acquisition module is set as the m group measured value in the preset period of time that short-circuit stage starts on acquisition circuit cable；
Function Fitting module is set as determining the functional relation of interference voltage and electric current according to the m group measured value；
Interference voltage determining module is set as after the preset period of time according in the functional relation and the return cable
Real-time current determine real-time interference voltage；
Voltage correction module is set as determining electric arc with the real-time interference voltage according to the real-time voltage in the return cable
Voltage；
Arcing judgment module is set as judging that system enters arcing state when the arc voltage is greater than preset value.
9. a kind of electronic equipment characterized by comprising
Memory；And
The processor of memory belonging to being coupled to, the processor is configured to the instruction based on storage in the memory,
Execute such as the described in any item arcing condition judgement methods of claim 1-7.
10. a kind of computer readable storage medium, is stored thereon with program, realized when which is executed by processor as right is wanted
Seek the described in any item arcing condition judgement methods of 1-7.
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