CN104635128B

CN104635128B - Arc fault recognition capability analysis of experiments device and its test analysis method

Info

Publication number: CN104635128B
Application number: CN201510063422.8A
Authority: CN
Inventors: 许志红; 周志炜
Original assignee: Fuzhou University
Current assignee: Fuzhou University
Priority date: 2015-02-06
Filing date: 2015-02-06
Publication date: 2017-06-06
Anticipated expiration: 2035-02-06
Also published as: CN104635128A

Abstract

The present invention relates to a kind of arc fault recognition capability analysis of experiments device and its test analysis method, the device includes host computer observing and controlling and analysis module, slave computer, realizes the communication module that host computer observing and controlling communicate between analysis module and slave computer, and the slave computer includes the AFCI acting characteristics test module and electronic type test module that are used to test tested AFCI acting characteristics；Also include an acquisition module, for receiving the arcing fault signal that the AFCI acting characteristics test module sends, realize the conditioning to arcing fault signal, collection, conversion and measure, and transmission to the host computer observing and controlling is processed with analysis module, the data exchange with AFCI acting characteristic test modules is realized in then host computer observing and controlling with analysis module by the communication module.The present invention has automatic monitoring and warning function, test data analyzer function, greatly improves the arc fault recognition capability analyze speed of arc-fault circuit interrupter.

Description

Arc fault recognition capability analysis of experiments device and its test analysis method

Technical field

The present invention relates to a kind of arc fault recognition capability analysis of experiments device and its test analysis method.

Background technology

In recent years, there is the first place that number and direct losses occupy all kinds of cause of fire always in electrical fire, and electrically fiery Major part is caused by arc resistance failures such as short circuit, electric leakage, loose contacts in calamity.In low-voltage power supply and distribution system, failure electricity The origin cause of formation of arc is broadly divided into two classes, a class be along insulator portion conductive surface, it is another kind of be generated from closely two Between individual electrode.The former is heated or occurred contingency electric spark for a long time due to insulator, is caused insulating surface to be carbonized and is formed electricity Arc passage；The latter touches ground conduit due to energized conductor, or the insulation of cable is scratched by sharp metal.Arc fault master It is divided into series arc faults, parallel arc fault and the class of ground arc failure three.Ground arc failure because with parallel arc therefore Barrier characteristic is similar, it is also possible to be classified as parallel arc fault.Due to traditional protection electrical equipment, such as breaker, fuse, residual current Protector, all cannot effectively detect arc fault, especially the less series arc faults of fault current, therefore cannot contain The fire that arc fault triggers.

Arc-fault circuit interrupter（AFCI）, also known as arc fault detection device（AFDD）It is new fire-proof protection electricity Device, possesses arc fault detection ability, can cut off circuit before fire generation, is preventive from and " does not fire ".At present, the U.S. is logical With electric, there have been AFCI products in the Siemens of Germany, the company such as the Schneider of France.But, existing electric arc AFCI is deposited The problems such as missing inspection and flase drop.The standard UL1699 that the U.S. formulates《Arc-fault circuit interrupter》It is the arc fault inspection for checking AFCI Survey the mandatory standard of performance.UL1699 standards have 26 experiments, in addition to regular circuit breakers are tested, also three detections The experiment of AFCI arc fault recognition capabilities, i.e. false tripping experiment, arc fault detection experiment and operation suppress experiment.Wherein, False tripping is tested for detecting whether AFCI can thread off extremely in circuit normal work, and remaining two experiments are all by simulation Physical fault electric arc checks the electric arc recognition performance of AFCI.The method for simulating physical fault electric arc has three kinds, and the first is profit Fault electric arc is produced with carbon-point and copper rod point discharge, second is carbonized path test method, and the third is a contact arc Test method.In all fault electric arcs simulation method for generation, the method closest to actual arc failure situation is carbonized path Test method.Carbonized path test method is, by modes such as high pressure carbonizations, to form carbonization in the insulating surface of test cable logical Road, and then produce fault electric arc.Using carbonized path experiment fault electric arc breaker is tested and tested, be have into Capable experiment, while carbonized path experimental phenomena and Wave data are to study the important data source of fault electric arc detection technique, It is also the important means of effective inspection fault electric arc breaker protective property.Although China has formulated failure electricity The carbonized path test standard and test method of arc breaker, but, because carbonized path process of the test is complicated, returned containing high voltage Path test system safety coefficient is poor, furthermore the carbonization passage that high pressure carbonization is formed is unstable, satisfactory waveform success rate is low, Collection is difficult, and test cable can produce the noxious materials such as a large amount of dioxin, hydrogen chloride, phenyl ring when burning, and pollutes environment.Due to upper State various reasons and result in fault electric arc carbonized path experiment difficulty, be badly in need of developing a kind of Based Intelligent Control, energy-conserving and environment-protective, operation side Just the fault electric arc carbonized path analysis of experiments device of safety, is used.

And false tripping is tested, test event up to 18 often completes a test it is necessary to changing test load and connecing again Line, thus during test fee, it is laborious.The present invention devises the open database of host computer and waveform analysis module, will test Typical waveform in journey is stored, and devises fault waveform output module, by typical waveform through the treatment of output module after, It is directly output to be connected in the system of fault electric arc breaker, with the Fault Identification energy of convenient criterion fault electric arc breaker Power.

Bibliography

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The content of the invention

There is automatic monitoring and warning function, test data analyzer function, pole it is an object of the invention to provide one kind The arc fault recognition capability analysis of experiments dress of the big arc fault recognition capability analyze speed that improve arc-fault circuit interrupter Put and its test analysis method.

To achieve the above object, the technical scheme is that：A kind of arc fault recognition capability analysis of experiments device, bag Include host computer observing and controlling and analysis module, slave computer, realize the communication that host computer observing and controlling communicates between analysis module and slave computer Module, the slave computer includes AFCI acting characteristics test module and the electronic type test for testing tested AFCI acting characteristics Module；Also include an acquisition module, for receiving the arcing fault signal that the AFCI acting characteristics test module sends, realize Conditioning, collection to arcing fault signal, conversion and measure, and send to the host computer observing and controlling and analysis module Reason, then host computer observing and controlling is realized being handed over the data of AFCI acting characteristic test modules with analysis module by the communication module Change.

In embodiments of the present invention, the host computer observing and controlling includes a people being connected with the communication module with analysis module Machine interactive module and the data process＆analysis module being sequentially connected with the human-computer interaction module, data read module, data are deposited Storage module and voltage waveform data storehouse, the data memory module are also associated with a current waveform data storehouse, the voltage, electric current Waveform database is connected to the human-computer interaction module, and the voltage, current waveform data storehouse are additionally coupled to the electronic type Test module, the data read module is also connected with the acquisition module；The human-computer interaction module includes a man-machine interaction Interface.

In embodiments of the present invention, the AFCI acting characteristics test module includes and the communication module and acquisition module The control unit of connection and the illuminant module being connected with the control unit, flame sensing module, drive module and sensing mould of threading off Block, the illuminant module, flame sensing module, drive module and dropout sensing module test main electricity with an AFCI acting characteristics Road connects, and the AFCI acting characteristics test main circuit is additionally coupled to the acquisition module.

In embodiments of the present invention, the AFCI acting characteristics test main circuit includes tested AFCI, test cable, first To the 8th switch, transformer, lamp, the first to the second load, the six, the 7th switch is two-way switch；The first switch, Transformer and test cable composition high pressure carbonization circuit, high pressure carbonization is carried out to test cable；The tested AFCI, second, Three and the 8th switch, lamp and test cable composition carbonization decision circuitry, for judging whether carbonization completes；The tested AFCI, Secondth, the the 4th to the 8th switch, the first to the second load and test cable composition hookup, the electricity for testing tested AFCI Arc recognition performance；The switch of the tested AFCI, the 6th and the 7th, the first load and the second load composition false tripping hookup, For detecting whether tested AFCI can thread off extremely in circuit normal work.

In embodiments of the present invention, first load is adjustable resistive load, and second load is regulation in standard Respective load, respective load specified in the standard include false tripping testing standard regulation 18 kinds load and shielding load 5 kinds of loads of testing standard regulation.

In embodiments of the present invention, the electronic type test module includes being connected with voltage, current waveform data storehouse respectively First and second signal generating module, low-voltage, high-current occur module, rated voltage high current occur module, it is described first letter Number there is module and the low-voltage, high-current module occur be connected, the secondary signal generation module respectively with the big electricity of the low pressure There is module in stream and rated voltage high current occurs module connection.

Present invention also offers a kind of experiment based on arc fault recognition capability analysis of experiments device described above point Analysis method, comprises the following steps,

Step S1：Carry out carbonized path experiment, including the experiment of series arc faults carbonized path, parallel arc fault carbonization Test and carbonized path ignition test in path；

1. series arc faults carbonized path experiment：

（1）Test current is set by human-computer interaction interface, prepares test cable；

（2）Electricity in AFCI acting characteristic test modules, control unit, illuminant module, drive module upper electricity simultaneously, control the One to the 8th switches off；

（3）Host computer observing and controlling sends work order to control unit with analysis module by communication module, and control is described AFCI acting characteristics test the switching sequence of main circuit：The 8th switch is closed, control the 6th is switched and causes that the first load accesses master Circuit；First switch is closed, and transformer is carbonized to test cable；First switch is opened, second, third switch closure, carbon Change decision circuitry work, if lamp is bright, be carbonized successfully, and perform step（4）；If lamp is dark, carbonization failure re-executes step （3）；The carbonization decision circuitry is made up of tested AFCI, second, third and the 8th switch, lamp and test cable；

（4）3rd switch opening, the 4th switch closure so that lamp cuts off from main circuit, test cable and the first load are gone here and there Connection, and fault electric arc signal is produced, meanwhile, acquisition module collection test voltage current waveform data, and Wave data is transmitted To host computer observing and controlling and the data read module of analysis module；

（5）Secondth, the 4th switch is opened after setting time is closed, meanwhile, acquisition module is stopped；

（6）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse；Data process＆analysis module obtains test waveform data from data read module, And Wave data is processed and is analyzed, it is determined that the drop-away time of tested AFCI；If drop-away time takes off less than or equal to predetermined The button time, then judge that tested AFCI is qualified；Conversely, unqualified；

2. parallel arc fault carbonized path experiment：

（2）Host computer observing and controlling sends work order to control unit with analysis module by communication module, and control is described AFCI acting characteristics test the switching sequence of main circuit：The switch of control first to the 8th is opened；8th switch closure, control the 6th Switch causes that the first load accesses main circuit；Second switch is opened, and first switch closure, transformer carries out carbon to test cable Change, carbonization time is 10 seconds；First switch is opened, and the second, the 4th switch closure, test current flows through the 8th switch, is tested AFCI, second switch, test cable, the 4th switch, the 6th switch, the first load, conduction time is 10 seconds, meanwhile, gather mould Block gathers test voltage current waveform data, and Wave data is transferred to the digital independent mould of host computer observing and controlling and analysis module Block；

（3）First, second switch repeat step（2）Switching sequence, until there is following either case：Test period reaches To 5 minutes, flame sensing module detect cotton catch fire, dropout sensing module detect tested AFCI thread off or in 0.5 second therefore Barrier current half wave number is more than or equal to 8；0.5 second internal fault current half wave number is counted by data process＆analysis module Number；

（4）Control unit feeds back the data of the on/off switch state of tested AFCI and flame sensing module by communication module To host computer observing and controlling and analysis module；

（5）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse；Data process＆analysis module obtains test waveform data from data read module, And Wave data is processed and is analyzed, 0.5 second internal fault current half wave number is calculated, when 0.5 second internal fault current half wave number When reaching 8, if tested AFCI threads off, judge that tested AFCI is qualified；Conversely, unqualified；

3. carbonized path ignition test：

（3）First, second switch repeat step（2）Switching sequence, until there is following either case：Test period reaches 5 minutes, flame sensing module detect that cotton catches fire, dropout sensing module detects tested AFCI and threads off；

（5）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse；Data process＆analysis module obtains test waveform data from data read module, And Wave data is processed and is analyzed, judge the dropout situation of AFCI, if before cotton catches fire, being tested AFCI and threading off, Then AFCI is qualified；Conversely, unqualified；

Step S2：Carry out shielding load test, including shielding load arc fault experiment and the carbonization road with shielding load Footpath ignition test；

1. shielding load arc fault experiment：

（1）Loaded by human-computer interaction interface Selection experiment, test current is set, prepare test cable；

（2）Host computer observing and controlling sends work order to control unit with analysis module by communication module, and control is described AFCI acting characteristics test the switching sequence of main circuit：

Carry out main line Test to Failure：The switch of control first to the 8th is opened；The 8th switch is closed, control the six, the 7th is opened Close and cause that first, second load accesses main circuit, while be connected with test cable after first, second load parallel connection, first switch Closure, transformer is carbonized to test cable；First switch is opened, second, third switch closure, and be carbonized decision circuitry work Make, if lamp is bright, be carbonized successfully；If lamp is dark, carbonization failure need to be carbonized again；The carbonization decision circuitry by tested AFCI, Second, third and the 8th switch, lamp and test cable are constituted；3rd switch is opened, the 4th switch closure so that lamp is from main circuit Excision, first, second load accesses main circuit, and produces fault electric arc signal, meanwhile, acquisition module collection test voltage electric current Wave data, and Wave data is transferred to the data read module of host computer observing and controlling and analysis module；Secondth, the 4th switch exists Opened after closure setting time, meanwhile, acquisition module is stopped；

Carry out tie point Test to Failure：The switch of control first to the 8th is opened；Close the 8th switch, control the 6th, the Seven switch cause first, second load access main circuit, now, first load be connected with test cable, second load not with examination Electrical verification cable is connected, and first switch closure, transformer is carbonized to test cable；First switch is opened, and second, third switch is closed Close, carbonization decision circuitry work, if lamp is bright, is carbonized successfully；If lamp is dark, carbonization failure need to be carbonized again；The carbonization is sentenced Deenergizing is made up of tested AFCI, second, third and the 8th switch, lamp and test cable；3rd switch is opened, the 4th switch is closed Close so that lamp produces fault electric arc signal from main circuit excision, test cable and the first load in series, meanwhile, acquisition module Start to gather test voltage current waveform data, and Wave data is transferred to the digital independent of host computer observing and controlling and analysis module Module；Secondth, the 4th switch is opened after setting time is closed, meanwhile, acquisition module is stopped；

Carry out the second branch trouble experiment：Carry out tie point Test to Failure：The switch of control first to the 8th is opened；Closure 8th is switched, and control the six, the 7th is switched so that first, second load access main circuit, now, the first load is not electric with experiment Cable is connected, the second load is connected with test cable, and first switch closure, transformer is carbonized to test cable；First switch Open, second, third switch closure, carbonization decision circuitry work, if lamp is bright, is carbonized successfully；If lamp is dark, carbonization failure, Need to be carbonized again；The carbonization decision circuitry is made up of tested AFCI, second, third and the 8th switch, lamp and test cable；The Three switches are opened, the 4th switch closure so that lamp produces failure from main circuit excision, test cable and the second load in series Arc signal, meanwhile, acquisition module collection test voltage current waveform data, and by Wave data be transferred to host computer observing and controlling with The data read module of analysis module；Secondth, the 4th switch is opened after setting time is closed, meanwhile, acquisition module stops work Make；

（3）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse；Data process＆analysis module obtains test waveform data from data read module, And Wave data is processed and is analyzed, it is determined that the drop-away time of tested AFCI；If drop-away time takes off less than or equal to predetermined The button time, then judge that tested AFCI is qualified；Conversely, unqualified；

2. with the carbonized path ignition test of shielding load：

（2）Host computer observing and controlling sends work order to control unit with analysis module by communication module, and control is described AFCI acting characteristics test the switching sequence of main circuit：The switch of control first to the 8th is opened；8th switch closure, control the 7th Switch causes that the second load accesses main circuit；Second switch is opened, and the first, the 5th switch closure, transformer enters to test cable Row carbonization, carbonization time is 10 seconds, while the second load normal work；Firstth, the 5th switch is opened, and the second, the 4th switch is closed Close, test current flows through the 8th switch, tested AFCI, second switch, test cable, the 4th switch, the 7th switch, second negative Carry, conduction time is 10 seconds, meanwhile, acquisition module collection test voltage current waveform data, and Wave data is transferred to Position machine observing and controlling and the data read module of analysis module；

（3）First, secondth, the 5th switch repeat step（2）Switching sequence, until there is following either case：Experiment Detect that cotton catches fire, dropout sensing module detects tested AFCI and threads off the time up to 5 minutes, flame sensing module；

Step S3：Carry out false tripping experiment：

（1）Host computer is tested and sends work order to control unit with analysis module, controls the AFCI acting characteristics to survey Try the switching sequence of main circuit：The switch of control first to the 8th is opened, and the 8th switch closure, control the 7th is switched and causes that second is negative Carry and access main circuit, wherein, control the 6th is switched so that first is supported on electric hand drill multi-load experiment, fluorescent lamp multi-load examination Main circuit is accessed when testing, first loads and do not access circuit during remaining experiment, acquisition module collection test voltage current waveform data, And Wave data is transferred to the data read module of host computer test and analysis module；

（2）After reaching the given threshold time, the seven, the 8th switches are opened, and control unit is by the on/off switch shape of tested AFCI State feeds back to host computer and tests and analysis module by communication module；

（3）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse, host computer test judge the dropout situation of AFCI with analysis module, if AFCI threads off, Then judge that AFCI occurs false tripping phenomenon, AFCI is unqualified；If AFCI does not thread off, AFCI is qualified.

Compared to prior art, the invention has the advantages that：

1st, apparatus of the present invention have automatic monitoring and warning function, improve carbonized path experiment automaticity and Security, device sends alarm and automatically cuts off main circuit when cotton catches fire, it is not necessary to power-off manually, improves the peace of experiment Quan Xing, illuminant module may determine that whether test cable is carbonized completion, and dropout sensing module can be with automatic decision process of the test Whether arc-fault circuit interrupter contact threads off, it is not necessary to artificial observation；

2nd, apparatus of the present invention have test data analyzer function, and data process＆analysis module may determine that test data is It is no to meet the requirement of UL1699 standards, and judge whether whether the successful and tested arc-fault circuit interrupter of experiment is qualified, additionally, data Treatment can also analyze the feature of test voltage current waveform, including harmonic wave distribution with analysis module, and zero stops time, wavelet energy Entropy etc.；

3rd, according to standard, three kinds of test main circuits, false tripping experiment main circuit and shielding load to carbonized path experiment Experiment main circuit is integrated, and AFCI acting characteristics test main circuit is devised, using the main circuit except that can complete carbonization The every test in path, can also complete false tripping experiment and shielding load test, so as to simplify the switching step of test main circuit Suddenly, additionally, device is assembled with switch for each test load, it is possible to automatically switch, facilitate the replacement of test load, improve Testing efficiency；

4th, the test voltage current waveform data for having stored can be processed, and is realized by electronic type test module Waveform is reduced, so as to quickly and easily test the performance of AFCI, increases substantially testing efficiency.

Brief description of the drawings

Fig. 1 is the overall theory diagram of arc fault recognition capability analysis of experiments device of the present invention.

Fig. 2 is that AFCI acting characteristics of the present invention test main circuit principle schematic.

Fig. 3 is that arc fault occurs position view.

Specific embodiment

Below in conjunction with the accompanying drawings, technical scheme is specifically described.

As shown in figure 1, arc fault recognition capability analysis of experiments device of the invention includes host computer observing and controlling with analysis mould Block, the arc-fault circuit interrupter AFCI of slave computer（Arc Fault Circuit Interrupters）Acting characteristic test module With the several parts of electronic type test module.Communication module and acquisition module are set up the connection of upper and lower computer and are communicated.AFCI is acted Characteristic test module and electronic type test module are used to test the acting characteristic of tested AFCI；It is special that sampling module receives AFCI actions Property the arcing fault signal that sends of test module, realize to the conditioning of arcing fault signal, collection, conversion and measurement, and send To host computer observing and controlling and analysis module；Host computer observing and controlling and analysis module are to the treatment of test waveform data, analysis, storage, defeated Go out, and the data exchange with AFCI acting characteristic test modules is realized by communication module.

In the present embodiment, the host computer observing and controlling includes a man-machine interaction being connected with the communication module with analysis module Module（The human-computer interaction module includes a human-computer interaction interface for being used for man-machine interaction）And connect successively with the human-computer interaction module Data process＆analysis module, data read module, data memory module and the voltage waveform data storehouse for connecing, the data storage Module is also associated with a current waveform data storehouse, and the voltage, current waveform data storehouse are connected to the human-computer interaction module, Institute's voltage, current waveform data storehouse are additionally coupled to the electronic type test module, the data read module also with the collection Module is connected.The AFCI acting characteristics test module include the control unit that is connected with the communication module and acquisition module and Illuminant module, flame sensing module, drive module and the dropout sensing module being connected with the control unit, the illuminant module, Flame sensing module, drive module and dropout sensing module are connected with AFCI acting characteristics test main circuit, the AFCI Acting characteristic test main circuit is additionally coupled to the acquisition module.The electronic type test module include respectively with voltage, electric current There is module, rated voltage high current and occur in first and second signal generating module of waveform database connection, low-voltage, high-current There is module and be connected in module, first signal generating module, the secondary signal occurs module point with the low-voltage, high-current Not there is module with the low-voltage, high-current and rated voltage high current occurs module and is connected.

AFCI acting characteristics test main circuit as shown in Fig. 2 switch S1, transformer T1 and test cable composition high pressure carbonization Circuit, high pressure carbonization is carried out to test cable, and the transformer T1 secondary sides output voltage is 15kV, secondary side output short-circuit electricity It is 30mA to flow；Tested AFCI, switch S2, S3, S8 bulb L1, test cable composition carbonization decision circuitry, for judging that carbonization is No completion；Tested AFCI, the switch load of S2, S4, S5, S6, S7, S8 first Z1, the second load Z2, test cable composition experiment electricity Road, the electric arc recognition performance for testing AFCI；Tested AFCI, switch S6, S7, the first load Z1, the second load Z2 compositions are missed Trip-gear circuit, for detecting whether AFCI can thread off extremely in circuit normal work.First load is can resistance trimming Property load, it is described second load be respective load specified in standard（False tripping testing standard regulation has 18 kinds of different loads, such as Vacuum cleaner, fluorescent lamp, capacitor motor, Switching Power Supply, electronic dimming lamp, electric hand drill, bi-metal, electric wind Fan, air purifier etc.；Shielding load test standard regulation has 5 kinds of loads：Vacuum cleaner, fluorescent lamp, capacitor start are electronic Machine, Switching Power Supply, electronic dimming lamp）.

Arc fault occurs position view has three kinds as shown in figure 3, shielding arc fault in load test and position occurring, That is main line failure, the failure of branch road 1 and the failure of branch road 2.

The operation principle of arc fault recognition capability analysis of experiments device of the invention is as follows：

The operation principle and waveform database operation principle of three experiments related to the test of AFCI acting characteristics are entered respectively Row is described in detail.Three experiments are tested for carbonized path experiment, shielding load test and false tripping, carry out this three experiments When, electronic type test module does not work.

First, carbonized path experiment

Carbonized path test method is by way of high pressure carbonization, to form carbonization in the insulating surface of test cable logical Road, and then fault electric arc is produced, tested AFCI must line disconnection at the appointed time.Carbonized path experiment has three surveys Examination, i.e. series arc faults carbonized path experiment, the experiment of parallel arc fault carbonized path, carbonized path ignition test.Below This three tests are described in detail respectively.

1st, series arc faults carbonized path experiment

（1）Select series arc faults carbonized path to test by human-computer interaction interface, test current is set, prepare experiment Cable；

（2）Electricity in AFCI acting characteristic test modules, control unit, illuminant module, drive module are simultaneously upper electric, switch S1 ~ S8 is all in off-state；

（3）Host computer sends work order controlling switch sequential by communication module：Closure switch S8, two-way switch S6 beats To " right side " so as to the first load Z1 is accessed into main circuit；Switch S1 closures, transformer T1 is carbonized to test cable；Switch S1 is opened, and switch S2, S3 closure, electric current flows through switch S8, AFCI, switch S2, test cable, switch S3, bulb L1, if bubble L1 is bright, then be carbonized successfully, if bulb L1 does not work, carbonization failure need to be carbonized again；

（4）Being carbonized successfully, then switch S3 is opened, switch S4 is closed, and bulb L1 is cut off from main circuit, and the first load Z1 is accessed Main circuit, meanwhile, sampling module collection test voltage current waveform data, and Wave data is transferred to host computer observing and controlling and divided Analyse the data read module of module；

（5）Switch S2, S4 is opened after closure specifies the time, meanwhile, acquisition module is stopped；

（6）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse.Data process＆analysis module obtains test waveform data from data read module, And Wave data is processed and is analyzed, it is determined that the drop-away time of tested AFCI.If drop-away time specifies less than or equal to standard Drop-away time, then judge that tested AFCI is qualified；Conversely, unqualified.

2nd, parallel arc fault carbonized path experiment

（1）Select parallel arc fault carbonized path to test by human-computer interaction interface, test current is set, prepare experiment Cable；

（2）Firing test loop, each switching sequence is controlled by control unit：Closure switch S8, two-way switch S6 beat to " right side " by the first load Z1 so that access main circuit；Switch S2 is opened, and switch S1 closures, transformer T1 carries out carbon to test cable Change, carbonization time is 10 seconds；Switch S1 is opened, and switch S2, S4 closure, test current flows through switch S8, tested AFCI, switch S2, test cable, switch S4, switch S6, the first load Z1, conduction time is 10 seconds；Sampling module gathers test voltage electric current Wave data, and Wave data is transferred to the data read module of host computer；

（3）Switch S1, S2 repeat step（2）Switching sequence, until there is following either case：Test period reaches 5 Minute, flame sensing module detect cotton catch fire, dropout sensing module detect tested AFCI thread off, 0.5 second internal fault electricity Half wave number is flowed more than or equal to 8, and 0.5 second internal fault current half wave number is counted by data process＆analysis module.

（4）Control unit feeds back the data of the on/off switch state of tested AFCI and flame sensing module by communication module To host computer；

（5）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse.Data process＆analysis module obtains test waveform data from data read module, And Wave data is processed and is analyzed, 0.5 second internal fault current half wave number is calculated, when 0.5 second internal fault current half wave number When reaching 8, if tested AFCI threads off, judge that tested AFCI is qualified；If tested AFCI does not thread off, judge tested AFCI is unqualified.

3rd, carbonized path ignition test

（1）Carbonized path ignition test is selected by human-computer interaction interface, and test current is set, prepare test cable；

（2）Host computer sends work order, and control unit is according to instruction each switch of control：Closure switch S8, it is two-way Switch S6 is beaten to " right side " so as to the first load Z1 is accessed into main circuit；Switch S2 is opened, switch S1 closures, and transformer T1 is to experiment Cable is carbonized, and carbonization time is 10S；Switch S1 open, switch S2, S4 closure, test current flow through switch S8, AFCI, Switch S2, test cable, switch S4, switch S7, the second load Z2.Conduction time is 10S, meanwhile, sampling module collection experiment Voltage current waveform data, and Wave data is transferred to the data read module of host computer；

（3）Switch S1, S2 repeat step（2）Switching sequence, until there is following either case：Test period is up to 5 points Clock, flame sensing module detect that cotton catches fire, dropout sensing module detects tested AFCI and threads off；

（5）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse.Data process＆analysis module obtains test waveform data from data read module, And Wave data is processed and is analyzed, judge the dropout situation of AFCI, if before cotton catches fire, being tested AFCI and threading off, Then AFCI is qualified；Conversely, unqualified.

2nd, load test is shielded

Shielding load test method is identical with carbonized path test method, but the position that test load and arc fault occur Put difference.Test load can be that five kinds of shieldings of UL1699 standards regulation are loaded, including vacuum cleaner, fluorescent lamp, electric capacity Start motor, Switching Power Supply, electronic dimming lamp.The position that arc fault occurs is as shown in figure 3, including main line failure, branch road 1 Failure and the failure of branch road 2.

Shielding load test has two tests, the i.e. experiment of shielding load arc fault, the carbonized path with shielding load to draw Combustion experiment.

1st, shielding load arc fault experiment

The control method of shielding load arc fault experiment is basic with series arc faults carbonized path experimental control method It is identical, however, it is desirable to select arc fault that position and specific shielding load, such as vacuum cleaner occur.There are different works Make sequential, closure switch S8 first, the arc fault according to test determination occurs the closure side that position selects two-way switch S6, S7 To if main line failure, then two-way switch S6, S7 is beaten to " right side "；If the failure of branch road 1, then two-way switch S6 is beaten to " right side ", Two-way switch S7 is beaten to " left side "；If the failure of branch road 2, then two-way switch S6 is beaten to " left side ", and two-way switch S7 is beaten to " right side "；

2nd, with the carbonized path ignition test of shielding load

The control method of the carbonized path ignition test with shielding load is basic with carbonized path ignition test control method It is identical, but, also to select different shieldings to load, such as vacuum cleaner；Closure switch S8 first, two-way switch S7 beat to " right side " by the second load Z2 so that access main circuit；Switch S2 is opened, and switch S1, S5 closure, transformer T1 enters to test cable Row carbonization, while the second load Z2 normal works；Switch S1, S5 open, switch S2, S4 closure, test current flow through switch S8, AFCI, switch S2, test cable, switch S4, switch S7, the second load Z2, sampling module collection test voltage current wave figurate number According to, and Wave data is transferred to the data read module of host computer；

3rd, false tripping experiment

False tripping is tested for detecting whether AFCI can thread off extremely in circuit normal work.False tripping experiment has 18 Item test, the operation principle of each single item test is identical, and load is different.

（1）False tripping is selected to test and specific false tripping test load, such as electric hand drill by human-computer interaction interface；It is upper Machine sends work order, and control unit is beaten and load Z2 by second to " left side " according to instruction controlling switch S8 closures, two-way switch S7 Access main circuit（Two-way switch S6 is beaten to " left side " so that first is supported on electric hand drill multi-load experiment, fluorescent lamp multi-load experiment When access main circuit, remaining experiment first load do not access circuit）, sampling module collection test voltage current waveform data, and Wave data is transferred to the data read module of host computer；

（2）After reaching regulation setting time, switch S7, S8 are opened, and control unit leads to the on/off switch state of tested AFCI Cross communication module and feed back to host computer；

（3）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage Waveform database and current waveform data storehouse, host computer judge the dropout situation of AFCI, if AFCI threads off, judge that AFCI occurs False tripping phenomenon, AFCI is unqualified；If AFCI does not thread off, AFCI is qualified.

4th, waveform database

The data source of waveform database has waveform defeated in substantial amounts of AFCI acting characteristics testing experiment, waveform database Go out function, it is possible to reduce the experiment of repeatability, greatly improve testing efficiency, waveform database has three kinds of mode of operations：

1st, current waveform is selected from current waveform data storehouse by human-computer interaction interface, and Wave data is transferred to signal Generation module 2, signal generating module 2 carries out digital-to-analogue conversion to Wave data, forms analog signal, signal generating module 2 it is defeated Go out to be directly accessed AFCI Current Transformer Secondaries side or AFCI carries the AD sampling channels of detection module, so as to provide event to AFCI Barrier arc current signal；

2nd, voltage waveform is selected from voltage waveform data storehouse by human-computer interaction interface, and Wave data is transferred to signal Generation module 1, signal generating module 1 carries out digital-to-analogue conversion to Wave data, forms analog signal, and signal generating module 1 is exported Connect the input of voltage amplification module, the output of voltage amplification module connects the input of AFCI, be AFCI internal electron circuit and Tripping mechanism is powered；Current waveform is selected from current waveform data storehouse by human-computer interaction interface again, and Wave data is transmitted To signal generating module 2, signal generating module 2 carries out digital-to-analogue conversion to Wave data, forms analog signal, signal generating module 2 outputs connect the input of mutual conductance amplification module, and the output of mutual conductance amplification module connects the live wire input and fire wire output end of AFCI, is The current sensor of AFCI provides fault electric arc current signal.Mutual conductance amplification module have voltage signal is converted into current signal Function.If tested AFCI carries creepage protection function, the electricity leakage sensor of AFCI can not be accessed circuit, will otherwise drawn Earth leakage protective is played to be acted prior to fault electric arc electrical apparatus release；

3rd, current waveform is selected from current waveform data storehouse by human-computer interaction interface, and Wave data is transferred to signal Generation module 2, signal generating module 2 carries out digital-to-analogue conversion to Wave data, forms analog signal, and signal generating module 2 is exported The input of power amplifier module is connect, the output for connecing power amplifier module connects the input of AFCI, and the output termination of AFCI is resistive negative Carry R1.Now, the input voltage of AFCI is nonsinusoidal waveform, and electric arc is timed or judged for the input voltage using AFCI Perhaps, the AFCI of failure is not applied to, and the method is applied to only using current signal as the AFCI of signal source.

1. series arc faults carbonized path experiment：

2. parallel arc fault carbonized path experiment：

3. carbonized path ignition test：

1. shielding load arc fault experiment：

（1）Loaded by human-computer interaction interface Selection experiment, test current is set, prepares test cable；

2. with the carbonized path ignition test of shielding load：

Step S3：Carry out false tripping experiment：

（1）Host computer is tested and sends work order to control unit with analysis module, controls the AFCI acting characteristics to survey Try the switching sequence of main circuit：The switch of control first to the 8th is opened, and the 8th switch closure, control the 7th is switched and causes that second is negative Carry and access main circuit（Control the 6th switch so that first connects when being supported on electric hand drill multi-load experiment, fluorescent lamp multi-load experiment Enter main circuit, remaining load of experiment first does not access circuit）, acquisition module collection test voltage current waveform data, and by ripple Graphic data is transferred to the data read module of host computer test and analysis module；

Above is presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, produced function work During with scope without departing from technical solution of the present invention, protection scope of the present invention is belonged to.

Claims

1. a kind of arc fault recognition capability analysis of experiments device, it is characterised in that：Including host computer observing and controlling and analysis module, under Position machine, realize the communication module that host computer observing and controlling communicate between analysis module and slave computer, the slave computer include be used for survey The AFCI acting characteristics test module and electronic type test module of the tested AFCI acting characteristics of examination；Also include an acquisition module, use In the arcing fault signal that the AFCI acting characteristics test module sends is received, realize the conditioning to arcing fault signal, adopt Collection, conversion and measure, and send to the host computer observing and controlling and processed with analysis module, then host computer observing and controlling with analyze mould Block realizes the data exchange with AFCI acting characteristic test modules by the communication module；

The host computer observing and controlling and analysis module include a human-computer interaction module being connected with the communication module and man-machine with this Data process＆analysis module, data read module, data memory module and voltage waveform data that interactive module is sequentially connected Storehouse, the data memory module is also associated with a current waveform data storehouse, and the voltage, current waveform data storehouse are connected to institute Human-computer interaction module is stated, the voltage, current waveform data storehouse are additionally coupled to the electronic type test module, the digital independent Module is also connected with the acquisition module；The human-computer interaction module includes a human-computer interaction interface；

The AFCI acting characteristics test module include the control unit that is connected with the communication module and acquisition module and with this Illuminant module, flame sensing module, drive module and dropout sensing module that control unit is connected, the illuminant module, flame Sensing module, drive module and dropout sensing module are connected with AFCI acting characteristics test main circuit, the AFCI actions Characteristic test main circuit is additionally coupled to the acquisition module；

AFCI acting characteristics test main circuit include tested AFCI, test cable, the first to the 8th switch, transformer, lamp, The first to the second load, the six, the 7th switch is two-way switch；The first switch, transformer and test cable composition High pressure carbonization circuit, high pressure carbonization is carried out to test cable；The tested AFCI, second, third and the 8th switch, lamp and experiment Cable composition carbonization decision circuitry, for judging whether carbonization completes；The tested AFCI, second, the 4th are to the 8th switch, the One to the second load and test cable composition hookup, the electric arc recognition performance for testing tested AFCI；It is described tested The switch of AFCI, the 6th and the 7th, the first load and the second load composition false tripping hookup, it is online for detecting tested AFCI Whether can be threaded off extremely during the normal work of road.

2. arc fault recognition capability analysis of experiments device according to claim 1, it is characterised in that：First load It is adjustable resistive load, second load is respective load specified in standard, respective load bag specified in the standard Include 18 kinds of loads of false tripping testing standard regulation and 5 kinds of loads of shielding load test standard regulation.

3. arc fault recognition capability analysis of experiments device according to claim 2, it is characterised in that：The electronic type is surveyed Die trial block includes first and second signal generating module, the low-voltage, high-current hair that are connected with voltage, current waveform data storehouse respectively There is module in raw module, rated voltage high current, first signal generating module occurs module and connects with the low-voltage, high-current Connect, the secondary signal occurs module and module and rated voltage high current generation module company occur with the low-voltage, high-current respectively Connect.

4. a kind of test analysis method of the arc fault recognition capability analysis of experiments device based on described in claim 3, it is special Levy and be：Comprise the following steps,

Step S1：Carry out carbonized path experiment, including the experiment of series arc faults carbonized path, parallel arc fault carbonized path Experiment and carbonized path ignition test；

1. series arc faults carbonized path experiment：

（2）Electricity in AFCI acting characteristic test modules, control unit, illuminant module, drive module upper electricity simultaneously, control first to 8th switches off；

（3）Host computer observing and controlling sends work order to control unit with analysis module by communication module, controls the AFCI to move Make the switching sequence of characteristic test main circuit：The 8th switch is closed, control the 6th is switched and causes that the first load accesses main circuit；The One switch closure, transformer is carbonized to test cable；First switch is opened, and second, third switch closure, carbonization judges electricity Road works, if lamp is bright, is carbonized successfully, and perform step（4）；If lamp is dark, carbonization failure re-executes step（3）；It is described Carbonization decision circuitry is made up of tested AFCI, second, third and the 8th switch, lamp and test cable；

（4）3rd switch opening, the 4th switch closure so that lamp cuts off from main circuit, test cable and the first load in series, and Fault electric arc signal is produced, meanwhile, acquisition module collection test voltage current waveform data, and Wave data is transferred to upper Machine observing and controlling and the data read module of analysis module；

（6）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage waveform Database and current waveform data storehouse；Data process＆analysis module obtains test waveform data from data read module, and right Wave data is processed and analyzed, it is determined that the drop-away time of tested AFCI；If drop-away time is less than or equal to predetermined dropout Between, then judge that tested AFCI is qualified；Conversely, unqualified；

2. parallel arc fault carbonized path experiment：

（2）Host computer observing and controlling sends work order to control unit with analysis module by communication module, controls the AFCI to move Make the switching sequence of characteristic test main circuit：The switch of control first to the 8th is opened；8th switch closure, the switch of control the 6th makes Obtain the first load and access main circuit；Second switch is opened, and first switch closure, transformer is carbonized to test cable, is carbonized Time is 10 seconds；First switch is opened, and the second, the 4th switch closure, test current flows through the 8th switch, tested AFCI, second Switch, test cable, the 4th switch, the 6th switch, the first load, conduction time is 10 seconds, while acquisition module collection experiment Voltage current waveform data, and Wave data is transferred to the data read module of host computer observing and controlling and analysis module；

（3）First, second switch repeat step（2）Switching sequence, until there is following either case：Test period reaches 5 Minute, flame sensing module detect that cotton catches fire, dropout sensing module detects tested AFCI and threads off or 0.5 second internal fault electricity Half wave number is flowed more than or equal to 8；0.5 second internal fault current half wave number is counted by data process＆analysis module；

（4）Control unit feeds back to the data of the on/off switch state of tested AFCI and flame sensing module by communication module Position machine observing and controlling and analysis module；

（5）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage waveform Database and current waveform data storehouse；Data process＆analysis module obtains test waveform data from data read module, and right Wave data is processed and analyzed, and 0.5 second internal fault current half wave number is calculated, when 0.5 second internal fault current half wave number reaches 8 When individual, if tested AFCI threads off, judge that tested AFCI is qualified；Conversely, unqualified；

3. carbonized path ignition test：

（2）Host computer observing and controlling sends work order to control unit with analysis module by communication module, controls the AFCI to move Make the switching sequence of characteristic test main circuit：The switch of control first to the 8th is opened；8th switch closure, the switch of control the 6th makes Obtain the first load and access main circuit；Second switch is opened, and first switch closure, transformer is carbonized to test cable, is carbonized Time is 10 seconds；First switch is opened, and the second, the 4th switch closure, test current flows through the 8th switch, tested AFCI, second Switch, test cable, the 4th switch, the 6th switch, the first load, conduction time is 10 seconds, meanwhile, acquisition module collection experiment Voltage current waveform data, and Wave data is transferred to the data read module of host computer observing and controlling and analysis module；

（3）First, second switch repeat step（2）Switching sequence, until there is following either case：Test period is up to 5 points Clock, flame sensing module detect that cotton catches fire, dropout sensing module detects tested AFCI and threads off；

（5）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage waveform Database and current waveform data storehouse；Data process＆analysis module obtains test waveform data from data read module, and right Wave data is processed and analyzed, and judges the dropout situation of AFCI, if before cotton catches fire, being tested AFCI and threading off, then AFCI is qualified；Conversely, unqualified；

Step S2：Shielding load test is carried out, including shielding load arc fault experiment and the carbonized path with shielding load are drawn Combustion experiment；

1. shielding load arc fault experiment：

（2）Host computer observing and controlling sends work order to control unit with analysis module by communication module, controls the AFCI to move Make the switching sequence of characteristic test main circuit：

Carry out main line Test to Failure：The switch of control first to the 8th is opened；The 8th switch is closed, the switch of control the six, the 7th makes Obtain first, second load and access main circuit, while being connected with test cable after first, second load parallel connection, first switch is closed, Transformer is carbonized to test cable；First switch is opened, second, third switch closure, carbonization decision circuitry work, if lamp It is bright, then it is carbonized successfully；If lamp is dark, carbonization failure need to be carbonized again；The carbonization decision circuitry is by tested AFCI, second, the Three and the 8th switch, lamp and test cable composition；3rd switch is opened, the 4th switch closure so that lamp cuts off from main circuit, the First, the second load accesses main circuit, and produces fault electric arc signal, meanwhile, acquisition module collection test voltage current wave figurate number According to, and Wave data is transferred to the data read module of host computer observing and controlling and analysis module；Secondth, the 4th switch sets in closure Opened after fixing time, meanwhile, acquisition module is stopped；

Carry out tie point Test to Failure：The switch of control first to the 8th is opened；The 8th switch is closed, control the six, the 7th is opened Close and cause first, second to load access main circuit, now, the first load is connected with test cable, the second load is not electric with experiment Cable is connected, and first switch closure, transformer is carbonized to test cable；First switch is opened, second, third switch closure, Carbonization decision circuitry work, if lamp is bright, is carbonized successfully；If lamp is dark, carbonization failure need to be carbonized again；The carbonization judges Circuit is made up of tested AFCI, second, third and the 8th switch, lamp and test cable；3rd switch is opened, the 4th switch is closed Close so that lamp produces fault electric arc signal from main circuit excision, test cable and the first load in series, meanwhile, acquisition module Start to gather test voltage current waveform data, and Wave data is transferred to the digital independent of host computer observing and controlling and analysis module Module；Secondth, the 4th switch is opened after setting time is closed, meanwhile, acquisition module is stopped；

Carry out the second branch trouble experiment：Carry out tie point Test to Failure：The switch of control first to the 8th is opened；Close the 8th Switch, control the six, the 7th switch cause first, second load access main circuit, now, first load not with test cable phase Even, the second load is connected with test cable, and first switch closure, transformer is carbonized to test cable；First switch is opened, Second, third switch closure, carbonization decision circuitry work, if lamp is bright, is carbonized successfully；If lamp is dark, carbonization failure is needed again Carbonization；The carbonization decision circuitry is made up of tested AFCI, second, third and the 8th switch, lamp and test cable；3rd switch Open, the 4th switch is closed so that lamp produces fault electric arc to believe from main circuit excision, test cable and the second load in series Number, meanwhile, acquisition module collection test voltage current waveform data, and Wave data is transferred to host computer observing and controlling with analysis mould The data read module of block；Secondth, the 4th switch is opened after setting time is closed, meanwhile, acquisition module is stopped；

（3）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage waveform Database and current waveform data storehouse；Data process＆analysis module obtains test waveform data from data read module, and right Wave data is processed and analyzed, it is determined that the drop-away time of tested AFCI；If drop-away time is less than or equal to predetermined dropout Between, then judge that tested AFCI is qualified；Conversely, unqualified；

2. with the carbonized path ignition test of shielding load：

（2）Host computer observing and controlling sends work order to control unit with analysis module by communication module, controls the AFCI to move Make the switching sequence of characteristic test main circuit：The switch of control first to the 8th is opened；8th switch closure, the switch of control the 7th makes Obtain the second load and access main circuit；Second switch is opened, and the first, the 5th switch closure, transformer is carbonized to test cable, Carbonization time is 10 seconds, while the second load normal work；Firstth, the 5th switch is opened, the second, the 4th switch closure, experiment Electric current flows through the 8th switch, tested AFCI, second switch, test cable, the 4th switch, the 7th switch, the second load, during energization Between be 10 seconds, meanwhile, acquisition module collection test voltage current waveform data, and by Wave data be transferred to host computer observing and controlling with The data read module of analysis module；

（3）First, secondth, the 5th switch repeat step（2）Switching sequence, until there is following either case：Test period Detect that cotton catches fire, dropout sensing module detects tested AFCI and threads off up to 5 minutes, flame sensing module；

Step S3：Carry out false tripping experiment：

（1）Host computer is tested and sends work order to control unit with analysis module, controls the AFCI acting characteristics test master The switching sequence of circuit：The switch of control first to the 8th is opened, the 8th switch closure, and control the 7th is switched and causes that the second load connects Enter main circuit, wherein, control the 6th switch so that first be supported on electric hand drill multi-load experiment, fluorescent lamp multi-load test when Main circuit is accessed, first loads and do not access circuit during remaining experiment, acquisition module collection test voltage current waveform data, and will Wave data is transferred to the data read module of host computer test and analysis module；

（2）After reaching the given threshold time, the seven, the 8th switches are opened, and control unit leads to the on/off switch state of tested AFCI Cross communication module and feed back to host computer test and analysis module；

（3）Data memory module obtains test waveform data from data read module, and Wave data is stored in into voltage waveform Database and current waveform data storehouse, host computer test judge the dropout situation of AFCI with analysis module, if AFCI threads off, sentence Determine AFCI and false tripping phenomenon occurs, AFCI is unqualified；If AFCI does not thread off, AFCI is qualified.