CN107505528A - The Intelligentized test system and method for testing of electric arc fault protection electrical equipment - Google Patents

Abstract

The present invention proposes a kind of Intelligentized test system and method for testing of electric arc fault protection electrical equipment, and wherein test system is characterised by, including：Failure simulation device, main circuit, control module group and test load；The failure simulation device includes：Carbonizing plant, arc generator and cutter device；The control module group includes：Using DSPIC as the control module group A of control core, control module group B and computer using data collecting card as core；The test load dress includes：Resistive load and shielding load；The computer is host computer platform.The present invention solves the difficult and inconvenient of AFDD acting characteristics checking in the prior art, can simulate the arc fault that various failure causes trigger, while automatic identification fault electric arc, and can comprehensively, systematically examine the acting characteristic of fault electric arc protection electrical equipment.

Description

The Intelligentized test system and method for testing of electric arc fault protection electrical equipment

Technical field

The invention belongs to the intelligent survey of Electrical Safety equipment testing field, more particularly to a kind of electric arc fault protection electrical equipment Test system and method for testing.

Background technology

Electrical Safety is always the theme of all trades and professions common concern.But in recent years due to terminal electrical equipment malfunction, The reasons such as electric wiring insulation ag(e)ing, damage or short circuit, it can usually trigger Low voltage arc fault.The extreme temperatures of electric arc, pole The combustible of surrounding is easily lighted, so as to trigger electrical fire, great threat is brought to Electrical Safety.Research shows, because of electric arc therefore Electrical fire caused by barrier accounts for the 30% of whole electrical fire, and with electrical equipment centralization, complication increasingly, the data With the trend gradually increased.Early in the eighties in last century, foreign scholar begins to that fault electric arc is deployed to study, purpose It is to detect fault electric arc, seeks a kind of method that can protect arc fault；The nineties, the U.S. begin one's study fault electric arc guarantor Protect breaker（Hereinafter referred to as AFDD）, and formulated UL1699 standards《Arc-fault circuit interrupter》；The country such as America and Europe is by living The buildings such as residence install AFDD to protect the electrical fire triggered by arc fault.

Electric arc fault protection electrical equipment is a kind of novel protected electrical equipment, can realize arc fault detection, and quickly cut off Faulty line, to avoid the generation of electrical fire.In recent years, domestic scholars and electricians deploy deeply to arc fault Research, have developed the AFDD products suitable for domestic electricity system.GB/T 31143-2014 standards in 2015《Arc fault Protect the general requirement of electrical equipment (AFDD)》It is formal to implement, in standard in addition to the regular circuit breakers function that regulation AFDD should possess, Also its acting characteristic proposition is clearly required.Timely and effectively identification electric arc is AFDD main feature, and this is also that it sets The difficult point and key issue of AFDD products are counted, therefore verifies that its acting characteristic is to determine its protection feature important means.The standard Acting characteristic proving test project is defined, and the simulated arc fault device to using claims.Currently used for surveying Examination AFDD acting characteristics and meet that testing equipment as defined in standard is less, traditional electric arc simulation generator automaticity is low And lack effective arc fault analysis ability.In addition AFDD acting characteristics proving test project is more, simulated arc fault dress Complex operation is put, therefore, for the ease of research arc fault and checking AFDD acting characteristics, accelerates AFDD research and development and raising AFDD properties of product and quality, urgent need design is a set of to meet that standard provides, safe operation is reliable, intelligence degree is higher, possesses The electric arc fault detector of information process analysis ability and fault electric arc recognition capability.

The content of the invention

In order to solve the shortcomings of the prior art, the present invention uses following technical scheme：

A kind of Intelligentized test system of electric arc fault protection electrical equipment, it is characterised in that including：Failure simulation device, main circuit, Control module group and test load；The failure simulation device includes：Carbonizing plant, arc generator and cutter device；It is described Control module group includes：Using DSPIC as the control module group A of control core, the control module group B using data collecting card as core And computer；The test load dress includes：Resistive load and shielding load；The computer is host computer platform。

Further, it is provided with voltage and current acquisition module in the control module group；

The main circuit includes：AC220V turns 7kV/30mA high-tension transformers and AC220V turns 2kV/300mA high-tension transformers, lamp Bubble, photosensitive sensing module, AFDD interfaces, breaker CB, voltage sensor, current sensor and KM1 to KM19 are switched for 19 totally；

Described two high-tension transformers are used to carry out high pressure carbonization to cable test product, so that cable test product insulating surface is formed Be carbonized passage；

The loop that the bulb is formed with KM3, coordinate the photosensitive sensing module, for detecting whether carbonization succeeds；

The AFDD interfaces are used to connect tested model machine；

The breaker CB switchs for crosstalk test loop；

The voltage sensor, current sensor coordinate the voltage and current acquisition module in control module group, to actual track Voltage is nursed one's health, and arc voltage, arc current are acquired；

The switch is full-controlled switch；

The main circuit can respectively constitute high pressure carbonization hookup by the cooperation between switch, series arc faults are tested Circuit, current limliting parallel arc fault hookup, ground connection parallel arc fault hookup, cutting cable arc fault examination in parallel Electrical verification road, shield test reactor circuit and false tripping hookup；

The working condition of the switch is monitored by the host computer platform, the time sequential routine of switch and each independent experiment loop Determined by the host computer platform according to the pilot project for selection；

Wherein, KM11 is multidirectional grammed switch, for selecting the type of the test load；

The main circuit between the switch of working condition conflict for being provided with interlock protection measure；

The access AC220V/50Hz power supplys of the main circuit, the failure simulation device, coincidence circuit are connected by binding post Inside is also connected with the test load.

Further, the carbonizing plant coordinates high-tension transformer, KM1, KM2, KM3, bulb and the photosensitive sensing mould Block is used to before arc fault experiment pre-process cable test product, its surface is formed carbonization passage；Wherein, KM1, AC220V turns 7kV/30mA high-tension transformers and forms high-voltage breakdown loop, and KM2, AC220V turn 2kV/300mA high-tension transformer structures Into carbonization loop, KM3, bulb and photosensitive sensing module composition carbonization detection module；

The arc generator includes：Fixed electrode, travelling electrode, stepper motor 1 and limit switch 1；The traveling electrode Translation is driven by stepper motor 1, limit switch 1 moves left and right stroke to traveling electrode and limited；

The cutter device includes：Steel blade, stepper motor 2 and limit switch 2；The steel blade is driven by stepper motor 2 Dynamic to move up and down, limit switch 2 moves up and down stroke to steel blade and limited；

KM10 is device selecting switch, carbonizing plant can be selected or from arc generator.

Further, the control module group A includes：DSPIC, carbonization effect identification module, position limitation protection module, main electricity It is way switch isolation control module, main circuit switch state detection module, AFDD state detection modules, protective module for electric machines, photosensitive Sensing module, communication module, key reset circuit, LCD display circuit and program burn writing circuit；

Wherein, main circuit switch isolation control module is isolated and enhanced processing to DSPIC control signals export, use In the action that driving all switchs, while the switch to not allowing to act simultaneously carries out hardware interlock, avoids causing main circuit short Road failure；

The main circuit switch state detection module includes：Switch state signal process circuit and isolation protective circuit 1；It is described to open Off status signal processing circuit moves register by multidigit and the status signal of 19 switches is converted into single parallel signal, passes through Isolation protective circuit 1 is inputted in DSPIC, the working condition of each switch is identified after decoding, while switching-state information is transmitted To the host computer platform；

The AFDD state detection modules include：AFDD state detection circuits and isolation protective circuit 2；

The protective module for electric machines includes：Limit signal process circuit and isolation protective circuit 3 are formed；The limit signal processing Circuit carries out the signal of limit switch 2 in signal the and described cutter device of limit switch 1 in the arc generator whole Close, form protection signal, to determine whether to take safeguard measure, and transmit information to the host computer platform；

The sensing unit of the photosensitive sensing module is used to sense the bright dark situation of the bulb；

The communication module is used to realize that the control module group A communicates with the data between the host computer platform.

Further, the control module group B includes：Data collecting card, the control of stepper motor 1 and protection module, step The control of stepper motor 2 and protection module, voltage and current acquisition module, current acquisition measurement range selection module；

The data collecting card is installed on PCIE interfaces；

The stepper motor 1 controls and protection module includes：Isolation protective circuit 4, the driver of stepper motor 1, the spacing guarantor in left and right Protection circuit；

The stepper motor 2 controls and protection module includes：Isolation protective circuit 5, the driver of stepper motor 2, upper and lower spacing guarantor Protection circuit；

The data collecting card simulation input connection voltage and current acquisition module, pass through the voltage sensor and electricity in main circuit Line voltage distribution and electric current during flow sensor collection experiment；

The current acquisition measurement range selection module has 0-5A, 5-25A, 25-100A, more than 100A totally four range gears.

Further, the host computer platform includes：Human-computer interaction interface, main circuit control and on-line monitoring module, event Hinder analogue means control and on-line monitoring module, signal acquisition module, data processing module, electric arc identification module, arc waveform Storehouse, test report generation have access to module and parameter setting module with print module, historical data；

The human-computer interaction interface is used for the input and output tested, including：Selection experiment project, test load, arc fault Type of device, arrange parameter and dispaly state and parameter.

The configuration processor of the host computer platform is provided with six threads altogether, wherein：

First thread is main circuit controling line journey, by the human-computer interaction interface button operation start, for the control The working condition and open that module group A data communication, the working condition of control main circuit, the monitoring main circuit all switch Dynamic second thread；At the end of single test, into wait state；

Second thread is step motor control thread, for the control to the stepper motor 1 and stepper motor 2；The thread is same When controlled by first thread and the 5th thread；According to the instruction of first thread start, and it is following it is several in the case of, stepper motor 1 and stepper motor 2 be stopped, the thread will enter wait state, including：Travelling electrode in the arc generator or The steel blade of the cutter device run to initial position when, the electrode of the arc generator two contact when, it is described cutting dress When the steel blade put has cut cable test product and when the 5th thread exports halt instruction；

3rd thread is voltage, current acquisition thread, for gathering circuit voltage and current in real time, and according to the shape of other threads State instructs, and stops data acquisition and enters wait state；3rd thread automatically saves experiment number before each data acquisition terminates According to；

4th thread is voltage, current signal processing thread, and the thread and the 3rd thread synchronization perform, for handling the 3rd thread The voltage and current collected, the voltage collected, current data are restored to actual value and by ripple according to hardware scaling Shape real-time display carries out electric arc knowledge on described human-computer interaction interface, while using arc voltage and arc current as analysis object Not, calculating parameter；

5th thread is electric motor protecting thread, is performed simultaneously with the second thread, and the thread is obtained in real time by data communication module The protection signal of the protective module for electric machines transmission, when the travelling electrode or the steel blade excess of stroke, the thread is to second Thread exports halt instruction, and enters wait state；

Assist energy thread supplemented by 6th thread, for handling all kinds of events on the human-computer interaction interface, including：Parameter is set Put, historical data is had access to, generates or prints test report, starts to test, stops experiment；When without event, the thread is wait State；When starting the generation of experiment event, firing test；When stopping the generation of experiment event, force to stop whole threads

Further, the shielding load includes：Inhibition shielding load, I classes, II classes electromagnetic interface filter and armored cable；Institute Stating inhibition shielding load includes：Vacuum cleaner, air compressor machine, Switching Power Supply, electronic dimming lamp, fluorescent lamp, Halogen lamp LED, electricity Bore.

Present invention also offers a kind of method of testing of the Intelligentized test system according to electric arc fault protection electrical equipment, and it is special Sign is, including：Series arc faults experiment, parallel arc fault experiment, shield test reactor, false tripping experiment.

Wherein, the series arc faults experiment includes：Happen suddenly series fault arc experiment, access series fault arc examination Test, close series fault arc experiment under series fault arc experiment and limiting temperature；

The parallel arc fault experiment includes：Current limliting parallel arc fault is tested, the experiment of ground connection parallel arc fault and cutting Cable parallel arc fault is tested；

The shield test reactor includes：Load test, A classes, B classes, C classes, the band inhibition shielding load examination of D classes are shielded without inhibition Test, I classes, II classes EMI shielding load tests and armored cable shielding load test.

Further, before testing experiment, it is also necessary to the state initialization of failure simulation device is carried out, including：Carbonization Device initialization, arc generator initialization and cutter device initialization；

The method of carbonizing plant initialization is：

Step A1：The host computer platform sends control instruction to control module group A, the control module group through communication module A control KM3 closure, now, it is described it is photosensitive sensing module senses described in the bright dark situation of bulb, and by the result detected send to Host computer platform；Need to perform high pressure carbonization if bulb does not work, the high pressure carbonization comprises the following steps：

Step A2：The high-voltage breakdown loop carries out high-voltage breakdown to cable test product：KM1 closures are controlled, KM 1 disconnects after 10 seconds；

Step A3：The carbonization loop is carbonized to cable test product：KM2 closures are controlled, KM2 disconnects after 1 minute；

Step A4：Step A1 is performed again, and whether detection cable test product insulating surface forms carbonization passage；

The method of arc generator initialization is：

Whether two electrodes that the host computer platform first detects the arc generator completely attach to：If do not completely attached to, Rotated forward through control module group B Driving Stepping Motors 1, until two electrodes completely attach to, stepper motor 1 stops the rotation, simultaneously The host computer platform records traveling electrode stroke；

The method of cutter device initialization is：

The host computer platform judges whether steel blade is in extreme higher position, if steel knife according to steel blade history stroke Piece does not recover to extreme higher position, through the counter-rotating of control module group B Driving Stepping Motors 2, so as to drive steel blade to transport upwards Row is until recover to extreme higher position, stepper motor 2 to shut down, while the host computer platform records steel blade displacement.

Further, before the series arc faults on-test, whole on off states are first initialized, now KM8, KM9, KM10 is closed, and rest switch disconnects；And the experiment of burst series fault arc, the experiment of access series fault arc are carried out successively, is closed Series fault arc under series fault arc experiment and limiting temperature is closed to test；

It is described burst series arc faults experiment concrete operation step be：

Step B1：Controlling switch KM4, KM5, KM6, KM7 are closed, until circuital current reaches test current value；

Step B2：Controlling switch KM7 disconnects, and the host computer platform data start to gather circuit voltage and current in real time, in real time Data processing and the display waveform on human-computer interaction interface；

Step B3：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

Step B4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

Step B5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step B6：Repeat step B1 to step B5 is three times；

It is described access the concrete operation step with series arc faults load test be：

Step C1：Controlling switch KM4, KM7 closes, until circuital current reaches test current value；

Step C2：Controlling switch KM7 disconnects, and the host computer platform data start to gather circuit voltage and current in real time, in real time Data processing and the display waveform on human-computer interaction interface；

Step C3：Controlling switch KM5 closure, circuit is accessed into fault electric arc；

Step C4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

Step C5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step C6：Repeat step C1 to step C5 is three times；

It is described closure series arc faults experiment concrete operation step be：

Step D1：Controlling switch KM4, KM5, KM7 are closed, until circuital current reaches test current value；

Step D2：Controlling switch KM4, KM7 disconnects, and the host computer platform data start to gather circuit voltage and current in real time, Real time data processing and the display waveform on human-computer interaction interface；

Step D3：Controlling switch KM4 is closed, and produces closure serial arc；

Step D4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

Step D5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step D6：Repeat step D1 to step D5 is three times；

What series fault arc was tested under the limiting temperature concretely comprises the following steps：AFDD is placed in insulating box, temperature in case is set Degree is respectively -5 DEG C or+40 DEG C, and operating procedure is identical with the burst series arc faults test procedure afterwards；

The parallel arc fault experiment is carried out successively：Current limliting parallel arc fault test, ground connection parallel arc fault experiment and Cut the experiment of cable parallel arc fault；

The concrete operation step of current limliting parallel arc fault experiment is：

Step E1：Controlling switch KM4, KM5, KM6, KM8, KM9, KM10, KM12 are closed, until circuital current reaches test current Value；

Step E2：Controlling switch KM5, KM6, KM12 disconnect, the host computer platform data start to gather in real time line voltage distribution with Electric current, real time data processing and the display waveform on human-computer interaction interface；

Step E3：Controlling switch KM5 is closed, and circuit is accessed into fault electric arc；

Step E4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

Step E5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step E6：Repeat step E1 to step E5 is three times；

Step E7：During off-test, control all switches off；

It is described ground connection parallel arc fault experiment concrete operation step be：

Step F1：Controlling switch KM4, KM5, KM6, KM8, KM10, KM13, KM14 are closed, until circuital current reaches experiment electricity Flow valuve；

Step F2：Controlling switch KM5, KM6, KM14 disconnect, the host computer platform data start to gather in real time line voltage distribution with Electric current, real time data processing and the display waveform on human-computer interaction interface；

Step F3：Controlling switch KM5 is closed, and circuit is accessed into fault electric arc；

Step F4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

Step F5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step F6：Repeat step F1 to step F5 is three times；

Step F7：During off-test, control all switches off；

The concrete operation step of the cutting cable parallel arc fault experiment is：

Step G1：Controlling switch KM4, KM12, KM15, KM16 are closed, and regulation resistance load is until circuital current reaches experiment electricity Stream；

Step G2：Switch KM12, KM6 are disconnected, the host computer platform data start to gather circuit voltage and current in real time, in real time Data processing and the display waveform on human-computer interaction interface；

Step G3：The host computer platform control stepper motor 2 is rotated forward, and steel blade is transported downwards under the drive of motor OK, start to cut cable, once signal acquisition module collects current signal, motor 2 slows down, until the default time then controls The counter-rotating of motor 2, steel blade are run up, and return to extreme higher position；

Step G4：All switch off, data acquisition module is stopped；

Step G5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step G6：Repeat step G1 to step G5 is three times；

The shield test reactor is carried out successively：Load test is shielded without inhibition, A classes, B classes, C classes, the band inhibition shielding of D classes are negative Carry experiment, I classes, II classes EMI shielding load tests and armored cable shielding load test;

The operating procedure without inhibition shielding load test is identical with burst series arc faults experiment；

The A classes with inhibition shielding load test concrete operation step be：

Step H1：Controlling switch KM4, KM5, KM6, KM9, KM10, KM18 is closed, while the shielding of controlling switch KM11 switchings is negative Carry；

Step H2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

Step H3：Judge whether line current is less than 3A, if need not then access arc fault, control all switches off, directly Connect and perform step H6, otherwise order performs step H4；

Step H4：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

Step H5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step H6：Repeat step H1 to step H5 is three times；

Step H7：Tested from a kind of lower inhibition shielding load；

Step H8：Repeat step H1 to step H7, until experiment is all completed in the shielding load of whole inhibitions；

The B classes with inhibition shielding load test concrete operation step be：

Step I1：Controlling switch KM4, KM5, KM6, KM9, KM10 closure, while the shielding load of controlling switch KM11 switchings；

Step I2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

Step I3：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

Step I4：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step I5：Repeat step I1 to step I4 is three times；

Step I6：Tested from a kind of lower inhibition shielding load；

Step I7：Repeat step I1 to step I6, until experiment is all completed in the shielding load of whole inhibitions；

The C classes with inhibition shielding load test concrete operation step be：

Step J1：Controlling switch KM4, KM5, KM6, KM7, KM9, KM10, KM18 are closed, while controlling switch KM11 switchings shield Load；

Step J2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

Step J3：Judge whether line current is less than 3A, if need not then access arc fault, control all switches off, directly Connect and perform step J6, otherwise order performs step J4；

Step J4：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

Step J5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step J6：Repeat step J1 to step J5 is three times；

Step J7：Tested from a kind of lower inhibition shielding load；

Step J8：Repeat step J1 to step J7, until experiment is all completed in the shielding load of whole inhibitions；

The D classes with inhibition shielding load test concrete operation step be：

Step K1：Controlling switch KM4, KM5, KM6, KM8, KM9, KM10, KM18 closure, regulation resistance load is until circuital current Reach test current, while the shielding load of controlling switch KM11 switchings；

Step K2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

Step K3：Judge whether line current is less than 3A, if need not then access arc fault, control all switches off, directly Connect and perform step K6, otherwise order performs step K4；

Step K4：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

Step K5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step K6：Repeat step K1 to step K5 is three times；

Step K7：Tested from a kind of lower inhibition shielding load；

Step K8：Repeat step K1 to step K7, until experiment is all completed in the shielding load of whole inhibitions；

The concrete operation step of the I classes, II classes EMI shielding load tests and armored cable shield test reactor includes：

Step L1：Controlling switch KM4, KM5, KM6, KM8, KM9, KM10, KM19 closure, regulation resistance load is until circuital current Reach test current, while the shielding load of controlling switch KM11 switchings；

Step L2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

Step L3：Judge whether line current is less than 3A, if need not then access arc fault, control all switches off, directly Connect and perform step L6, otherwise order performs step L4；

Step L4：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

Step L5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

Step L6：Repeat step L1 to step L5 is three times；

Step L7：Tested from a kind of lower inhibition shielding load；

Step L8：Repeat step L1 to step L7, until experiment is all completed in the shielding load of whole inhibitions；

The false tripping experiment includes the crosstalk experiment carried out successively and tested with interference load；

The concrete operation step of crosstalk experiment is：

Step M1：Controlling switch KM4, KM5, KM6, KM7, KM10, KM17 are closed, and regulation resistance load is until circuital current reaches Test current；

Step M2：Controlling switch KM4, KM6 disconnects, and the host computer platform data start to gather circuit voltage and current in real time, Real time data processing and the display waveform on human-computer interaction interface；

Step M3：Controlling switch KM4 is closed, and produces closure serial arc；

Step M4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

Step M5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

The band interference load tests concrete operation step：

Step N1：Each inhibition shielding load of KM11 sequential selections is controlled by host computer platform；

Step N2：Controlling switch KM4, KM19 is closed, and AFDD working conditions are fed back to host computer and put down by the control module group A Platform, host computer platform is judged AFDD actions, and food preservation test result.

The present invention is set in a creative way for building electricity consumption mesolow fault electric arc and fault electric arc protection electrical equipment acting characteristic The Intelligentized test system of electric arc fault protection electrical equipment, and the test method using system checking AFDD acting characteristics have been counted, Solve the difficult and inconvenient of AFDD acting characteristics checking in the prior art.The system can simulate what various failure causes triggered Arc fault, while automatic identification fault electric arc, and can comprehensively, systematically examine the action of fault electric arc protection electrical equipment special Property, while have integrated level high, full-featured, easy to operate and the characteristics of detection efficiency is greatly improved.

Innovative point of the present invention also includes：

The hookup for verifying AFDD acting characteristics is integrated by designed main circuit using multiple full-controlled switch, is formed One big compbined test circuit；Mutual cooperation between difference switch can reconstruct 14 independent hookups, can carry out 16 independent pilot projects, including series arc faults experiment, parallel arc fault experiment, shield test reactor and false tripping examination Test.Utilize host computer platform simultaneously, it is possible to achieve test load automatically switches, experiment process whole process is controllable, test data is automatic The functions such as collection, arc fault automatic identification.

Designed host computer platform solves the function of the same time needing execution the multi-task, realizes to whole test system The integration Management of system.Control, monitoring and the status display to main circuit whole on off state are realized by communication module；Pass through Data collecting card coordinates host computer procedure to realize the control to three class fault electric arc failure simulation devices so as to effectively simulate production Raw fault electric arc, while gather test voltage and current signal and realize the identification to electric arc.

Brief description of the drawings

The present invention is described in more detail with reference to the accompanying drawings and detailed description：

Fig. 1 is the integrally-built schematic diagram of the embodiment of the present invention；

Fig. 2 is main circuit switch cabinet electric hookup in the embodiment of the present invention.

Embodiment

For the feature and advantage of this patent can be become apparent, special embodiment below, it is described in detail below：

The present embodiment includes the Intelligentized test system of electric arc fault protection electrical equipment and corresponding method of testing, wherein, test system Technical scheme is used by system：The system is by fault electric arc failure simulation device cabinet（For setting failure simulation device）, it is main Contactor cabinet（For setting main circuit）, switch board（For placing control module group）, test load cabinet（Tested for placing Load）Form, as shown in Figure 1.Carbonizing plant, cutter device and arc generator are provided with simulated arc fault device cabinet, is used In arc phenomenon caused by the different reasons of generation.Main circuit switch cabinet is based on checking electric arc as defined in GB_T31143-2014 standards The acting characteristic experiment of protection electrical equipment is designed.Switch board is the core rack of the present invention, is provided with:With DSPIC control units For the control module group A of control core, control module group and computer using data collecting card as core.Test load cabinet is installed Resistive load and shielding load.Computer is the carrier of host computer platform, and PCIE data collecting cards are connected thereto；Host computer is supervised Control and analysis platform（Hereinafter referred to as " host computer platform "）For the control centre of the system, pass through communication module and control module Group A realizes communication；The major function of host computer configures including test parameters, controls and shows the work shape of main circuit switch cabinet State, control and monitor the course of work of fault electric arc failure simulation device, collection line voltage distribution, current signal, to the letter of collection Number handled and analyzed and realize that waveform is shown, relevant parameter is identified and calculated to fault electric arc and establishes fault electric arc Waveform database, differentiates whether AFDD acting characteristics meet to require；Automatically generate simultaneously printing test report in addition, also having, protect Deposit test data, have access to the functions such as historical test data, password login.

Wherein, main circuit switch cabinet is the key component of system in the present embodiment, and electric hookup is as shown in Fig. 2 the electricity Road is comprehensive test circuit, and high pressure carbonization hookup, serial arc event can be respectively constituted by the cooperation between switch Hinder hookup, current limliting parallel arc fault hookup, ground connection parallel arc fault hookup, cutting cable electric arc in parallel Test to Failure circuit and 8 kinds of shield test reactor circuits, 2 kinds of false tripping hookups etc..

AC220V is mainly equiped with cabinet turns 7kV/30mA and AC220V and turn 2kV/300mA high-tension transformers, bulb, photosensitive Sensing module, AFDD, breaker CB, voltage sensor, program control adjustable resistance, current sensor, KM1 to KM19 are opened for 19 totally Close.Wherein, two high-tension transformers are used to carry out high pressure carbonization to cable test product, so that cable test product insulating surface is formed Be carbonized passage.The loop that bulb is formed with KM3, coordinates photosensitive sensing module, for detecting whether carbonization succeeds；AFDD is tested Model machine；Breaker CB switchs for crosstalk test loop；Voltage sensor, current sensor coordinate voltage/electricity in switch board Acquisition module is flowed, actual track voltage is nursed one's health, so as to be acquired to arc voltage, arc current.KM1-KM19 is Full-controlled switch, difference switch, which is worked in coordination, may be constructed different tests circuit, so as to meet to verify the examination of AFDD acting characteristics The requirement tested；The working condition all switched is monitored by host computer platform, and the time sequential routine of switch and each independent experiment return Host computer platform is route to be determined according to the pilot project for selection；Wherein, KM10 is device selecting switch, is selected when AC is closed With carbonized path device, BC selects arc generator when closing；KM11 is that multidirectional grammed switch is used in Selection experiment load cabinet All kinds of loads, during experiment according to pilot project need automatically switch load.Main circuit switch cabinet is for working condition Interlock protection measure is provided between the switch of conflict.

The input LN access AC220V/50Hz power supplys of main circuit, binding post terminal J1-J6 connect arc fault respectively Analogue means, also it is connected with test load cabinet inside coincidence circuit.Simulated arc fault device is occurred by carbonizing plant, electric arc Three kinds of device, cutter device devices are formed, for simulating the fault electric arc of different reasons.In AFDD acting characteristic proving tests In, three kinds of devices are respectively suitable for different pilot projects.

Wherein, carbonizing plant is used to before arc fault experiment pre-process cable test product, its surface is formed carbon Change passage, whole preprocessing process needs high-tension transformer, switch KM1, switch KM2, switch in compatibility test main circuit KM3, bulb and photosensitive sensing module；Wherein, KM1, AC220V turn 7kV/30mA high-tension transformers composition high-voltage breakdown loop, KM2, AC220V turn 2kV/300mA and form high pressure carbonization loop, high-voltage breakdown loop and high pressure carbonization loop composition carbonized path Device, KM3, bulb and photosensitive sensing module composition carbonization detection module.Arc generator includes：Fixed electrode, removable electricity Pole, stepper motor 1 and limit switch 1；Traveling electrode drives translation by stepper motor 1, and limit switch 1 moves to traveling electrode or so Dynamic stroke is limited；Cutter device includes：Steel blade, stepper motor 2 and limit switch 2；Steel blade is by stepper motor 2 Driving moves up and down, and limit switch 2 moves up and down stroke to steel blade and limited.The travelling electrode of arc generator by The driving translation of stepper motor 1, while stroke is moved left and right to traveling electrode using limit switch and limited, avoid its operation super Journey and cause mechanical breakdown.The steel blade of cutter device is moved up and down by the driving of stepper motor 2, while utilizes limit switch pair Steel blade moves up and down stroke and limited.First two device is simultaneously suitable for series arc faults experiment, shield test reactor, limit Flow parallel arc fault experiment and ground connection parallel arc fault experiment, before above-mentioned experiment is carried out, host computer platform according to The failure simulation device of family selection.In addition to cutting cable parallel arc pilot project is tested using cutter device, remaining Device used in pilot project is that host computer selects to determine according to user.When being tested from carbonized path device, Controlling switch KM10 AC contact closures, when choosing is tested with arc generator, then control KM10 BC contact closures.

Control module group in switch board is the core of the present embodiment system, mainly by the control using DSPIC as core Molding block group A（Slave computer）, control module group B and computer using data collecting card as core（Host computer）Form.

As shown in figure 1, control module group A includes：DSPIC, carbonization effect identification module, position limitation protection module, main circuit Switch isolation control module, main circuit switch state detection module, AFDD state detection modules, protective module for electric machines, photaesthesia Survey module, usb communication module, key reset circuit, LCD display circuit and program burn writing circuit.Wherein, isolation and drive module The control signal of DSPIC outputs is isolated and enhanced processing, for driving KM1-KM19 switch motion, while to not permitting Perhaps the switch of action carries out hardware interlock simultaneously, avoids causing main circuit short trouble；Main circuit switch state detection module by Switch state signal process circuit, isolation protective circuit 1 are formed, and switch state signal process circuit utilizes multidigit movement register 19 switch state signals are converted into single parallel signal, inputted after the circuit of insulation blocking 1 in DSPIC, using switching shape State identification program is decoded, and so as to identify the working condition of each switch, while switching-state information is fed back into host computer Platform.AFDD state detection modules are made up of AFDD state detection circuits, isolation protective circuit 2, coordinate AFDD state identification journeys Sequence, for detecting whether subject AFDD plays protection.Protective module for electric machines is by limit signal process circuit, the structure of isolation protective circuit 3 Into limit signal process circuit enters the left and right limit switch signal of arc generator and the upper and lower limit switch signal of cutter device Row is integrated, and forms protection signal, electric motor protecting program judges whether to take safeguard measure according to the signal, and will feed back to Position machine platform.Its sensing unit of photosensitive sensing module is installed near main circuit bulb, for sensing the bright dark situation of bulb, and by Carbonization effect identification program is judged carbonization effect, and carbonization result is fed back into host computer platform.Usb communication module is used for Realize the data communication function between upper and lower computer.Communicated between upper and lower computer using the data based on MODBUS communication protocols, Turn the data communication program of USB interface cooperation upper and lower computer by RS232, signal, including experiment are transmitted between upper and lower computer The number such as parameter configuration instruction, main circuit control instruction, main circuit switch status command, AFDD status commands, carbonization effect instruction According to every a kind of control instruction is transmitted with data frame pattern, and each frame data are comprising station number, function code, effective number According to information such as, CRC check codes, it is easy to upper and lower computer software program to identify.

Control module group B mainly by data collecting card, stepper motor 1 controls and protection module, stepper motor 2 are controlled and protected Protect module, voltage and current acquisition module, current acquisition measurement range selection module composition.Data collecting card is as computer hardware A part is installed on PCIE interfaces.Wherein, stepper motor 1 controls and protection module is by isolation protective circuit 4, stepper motor 1 Driver, left and right position limitation protection circuit are formed；Stepper motor 2 controls and protection module is by isolation protective circuit 5, stepper motor 2 Driver, upper and lower spacing protection circuit are formed.Host computer platform passes through data collecting card output control arc generator and cutting The stepper motor direction signal and pulse signal of device, motor drive direction 1,2 and pulse 1,2 are respectively via insulation blocking module 4th, it is connected with the direction of stepper motor driver, pulse binding post PU+, DR+ after 5, while in order to avoid electrode and steel knife The piece displacement excess of stroke, takes the measure of hardware protection, i.e. electrode left lateral, right lateral displacement and up, the descending displacement point of steel blade The not input of spacing protection module as left and right and up and down, driven by being connected to stepper motor after displacement signal is differentiated and integrated The Enable Pin EN of dynamic device, in normal traveling process, EN is activated, once stroke transfinites, EN will fail, and motor is forcibly stopped fortune Turn, corresponding electrode or steel blade will suspend movement.In addition, data collecting card simulation input connection voltage and current acquisition mould Block, pass through line voltage distribution and electric current during the voltage of main circuit, current sensor collection experiment.Due to test current scope Extensively, thus current acquisition measurement range selection module to be designed with four range gears optional：0-5A, 5-25A, 25-100A, it is more than 100A, upper computer control module complete test current with postponing, and current acquisition measurement range selection module will be switched to voluntarily correspondingly Gear.

Computer is installed on switch board operating desk, is the carrier of host computer platform.Host computer platform is test of the present invention The control centre of system, all operationss flow are controlled by host computer platform, and user only need to be by enterprising in host computer platform Row operation can be tested entirely.As shown in figure 1, host computer platform is by human-computer interaction interface, main circuit control and online prison Survey module, failure simulation device control and on-line monitoring module（Module and cutting are controlled and monitored on-line including arc generator Device controls and on-line monitoring module）, signal acquisition module, data processing module, electric arc identification module, arc waveform storehouse, examination Test report generation and have access to module, password login module and parameter setting module composition with print module, historical data.Before experiment, By the man-machine interaction face Selection experiment project of host computer platform, test load, arc fault type of device, and experiment electricity is set The relevant parameters such as stream, AFDD model machine specifications；During experiment, host computer platform control total Test operating process, and monitor whole system The running status of system, while line voltage distribution, electric current are gathered in real time, by system running state and voltage, current waveform real-time display On human-computer interaction interface；Also fault electric arc is identified by analysis object of voltage and current for host computer platform, according to AFDD working condition, verify whether its acting characteristic is up to standard；In addition, host computer platform also store it is typical under all kinds of loads Arc waveform storehouse, data are provided to carry out the research of fault electric arc characteristic.

Because host computer platform in the same time realizes multiple functions, therefore the programming mode of multithreading is taken, will be whole Host computer procedure is distributed on six threads, and first thread is main circuit controling line journey, is starting to start when experiment event occurs Performing, the thread is instructed by intercommunication main circuit switch control instruction between data communication module, with slave computer and on off state, Control and monitor the working condition of main circuit switch, while according to default experiment process, start in mutually deserved test procedure Second thread, at the end of single test, the thread will enter wait state；Second thread is step motor control thread, should Thread is according to type of device, it is possible to achieve the control to stepper motor 1 and stepper motor 2, the thread simultaneously by first thread and 5th thread controls, and only just starts the thread when first thread goes to corresponding test procedure, in following several situations Under, the thread will enter wait state, and now motor is wholly off：Electrode（Steel blade）Run to initial position, two electrodes When cable test product has been cut in contact, steel blade, the output of the 5th thread stops the thread execute instruction；3rd thread be voltage, Current acquisition thread, the thread only have other threads just to start to perform when going to corresponding steps, and after starting execution, the thread is stood Start to gather circuit voltage and current in real time, when other threads, which exist, stops the 3rd thread execute instruction, then the thread stops Only data acquisition enters wait state, before each data acquisition terminates, will automatically save test data；4th thread is electricity Pressure, current signal processing thread, the thread perform simultaneously with the 3rd thread, the electricity that real-time calling, the 3rd thread of processing collect Pressure and electric current, while realize electric arc identification and electric arc relevant parameter（Including electric arc in Arc moment, arc time, 0.5s The parameters such as current half wave number）Calculating；5th thread is electric motor protecting thread, is performed simultaneously with the second thread, and the thread passes through Data communication module, the position limitation protection signal of slave computer transmission is obtained in real time, should when travelling electrode or the steel blade excess of stroke Thread, which will export the second thread, to be stopped performing control instruction, and this thread enters wait state；Assist energy line supplemented by 6th thread Journey, the thread are made up of multiple affair structure, and event is operated generation by user on human-computer interaction interface, include parameter for realizing Set, the function such as test report is had access to, generates or printed to historical data, starts to test, stops testing, logging off, in impunity When part produces, the thread is wait state, wherein, when operating parameter sets button, parameter setting event is generated, and eject ginseng Number sets interface, and relevant parameter is tested for configuring；When starting the generation of experiment event, by starting test, all threads start Operation, but all threads are all in state of activation；When stopping the generation of experiment event, whole threads will all be forcibly stopped and hold OK；When the event that logs off occurs, whole threads, which will be automatically stopped, to be performed and finally logs off.

In the present embodiment system, shielding load includes vacuum cleaner, air compressor machine, Switching Power Supply, electronic dimming lamp, fluorescence The inhibitions such as lamp, Halogen lamp LED, electric drill shielding load and two class electromagnetic interface filters and armored cable.

In the present embodiment, the technical scheme of method of testing is：The pilot project for needing to complete is tried including series arc faults Test, parallel arc fault experiment, shield test reactor, false tripping experiment.Wherein, series arc faults experiment has four pilot projects： Happen suddenly series fault arc experiment, access series fault arc experiment, closure series fault arc experiment, is connected under limiting temperature Fault electric arc is tested；Parallel arc fault experiment has three pilot projects：Current limliting parallel arc fault is tested, and is grounded parallel arc Test to Failure, the parallel arc fault experiment of cutting cable；Shield test reactor has eight pilot projects：Load examination is shielded without inhibition Test, A classes, B classes, C classes, D classes band inhibition shielding load test, I classes, II classes EMI shielding load tests and armored cable screen Cover load test.

After system electrification, fault electric arc failure simulation device type is selected on host computer platform human-computer interaction interface, is born Type, pilot project are carried, and the correlation test parameters such as test current, supply voltage and frequency, AFDD specifications are set, it is follow-up whole Experiment process includes current acquisition measurement range selection, the experimental rig course of work, main circuit work schedule etc. by host computer platform Completion is automatically controlled, pilot process is without artificially participating in.In experimentation, once any one on off state of main circuit occurs Change, control module group A will detect main circuit switch state, and switching-state information is fed back into host computer platform, pass through Human-computer interaction interface real-time display main circuit working condition, only on off state correctly just allow to perform to be operated in next step；Simultaneously Automatically save experiment process data and export test report, according to electric arc recognition result, voltage, current waveform are preserved to waveform In storehouse, typical electric arc waveform library is formed.

Three kinds of simulated arc fault generating means in the present embodiment system are used to simulate different arc faults, are applied to Pilot project is also not quite similar.Wherein, carbonizing plant and arc generator are simultaneously suitable for series arc faults experiment, shielding examination Test, current limliting parallel arc fault experiment and ground connection parallel arc fault experiment, operated by main circuit switch KM10, such as scheme Shown in 2, when KM10 AC closures, fault electric arc is produced from the former, when BC is closed, then from the latter；Cutter device is used In simulating metallicity electric arc in parallel, suitable for cutting cable parallel arc experiment.

, it is necessary to which whether detection cable test product insulating surface forms carbonization passage before experiment, method is：Host computer platform is through logical Control instruction is sent to control module group A and controls carbonization measure loop switch KM3 closures by letter module, and bulb, cable test product return Road is powered, and photosensitive module detection bulb is bright dark, and control module group A sends the carbonization result detected to host computer platform, if Bulb is bright, thinks that cable test product insulating surface has formed carbonized path, host computer platform allows user to perform behaviour in next step Make, otherwise need to perform high pressure carbonization.High pressure carbonization step is：1. AC220V turns 7kV/30mA high-tension transformers to cable test product Carry out high-voltage breakdown：KM1 is controlled to close, KM1 disconnects automatically after 10s；2. AC220V turns 2kV/300mA high-tension transformers to cable Test product is carbonized：KM2 is controlled to close, KM2 disconnects automatically after 1min；3. whether detection cable test product insulating surface forms again Be carbonized passage.

Before experiment, host computer platform first detects whether two electrodes completely attach to.If not in contact with host computer platform is through data Capture card output turns to and tach signal Driving Stepping Motor 1 rotates forward, so as to drive travelling electrode towards fixed electrode side To translation, two electrode contact conditions are monitored in real time in the process, until two electrodes completely attach to, stepper motor 1 will stop revolving Turn, while host computer platform records current traveling electrode stroke automatically.

Before experiment, host computer platform judges whether steel blade is in highest initial bit according to steel blade history stroke Put, if steel blade is not recovered to extreme higher position, host computer platform is turned to through data collecting card output and tach signal drives The counter-rotating of stepper motor 2, so as to drive steel blade to run up until recovering to stop fortune to extreme higher position, stepper motor 2 Turn, while record current steel blade displacement.

After simulated arc fault device completes initialization, experiment will be proceeded by.

During series arc faults on-test, whole on off states are first initialized, now KM8, KM9, KM10 are closed, remaining Switch off.

First, the series arc faults experiment that happened suddenly in circuit is carried out.Operating procedure is：（1）Controlling switch KM4, KM5, KM6, KM7 are closed, and program control adjustable resistance is according to the test current value Auto-matching test current of setting, until circuital current reaches Test current；（2）Controlling switch KM7 disconnect, host computer platform signal acquisition module start working, in real time gather line voltage distribution and Electric current, and real time data processing and the display waveform on human-computer interaction interface.（3）Controlling switch KM6 disconnects, if present apparatus is Carbonized path device then with power circuit connect by cable test product, the host computer platform control step if present apparatus is arc generator The counter-rotating of stepper motor 2, start arcing, now circuit produces fault electric arc suddenly.（4）When test period reaches specified time Afterwards, then controlling switch KM4, KM5 disconnects, and signal acquisition module is stopped；（5）Control module group A is anti-by AFDD working conditions Host computer platform is fed to, while host computer platform electric arc identification module is identified to electric arc and calculates related arc parameters, sentences Whether the AFDD within the standard stipulated time that breaks implements to protect, and to determine whether AFDD acting characteristics meet to require, preserves and records Test data.（6）Repeat the experiment 3 times, and preserve each result of the test.

Secondly, access band series arc faults load test is carried out.Unlike burst series arc faults electric arc：Step Suddenly（1）In only need controlling switch KM4, KM7 close, then adjust ohmic load until circuital current reach preset test current； Step（3）If present apparatus is carbonized path device, host computer directly controls controlling switch KM5 to close, now cable test product string Access energized circuit；Host computer platform controls the counter-rotating of stepper motor 2 if present apparatus is arc generator, starts to draw Arc, while controlling switch KM5 closures now circuit access fault electric arc.Remaining step is identical with burst series fault arc.

Then, carry out closing series arc faults experiment.Unlike burst series arc faults experiment：Step（1） In KM6 need not be controlled to close；Step（2）It is middle to need controlling switch KM4, KM7 disconnection simultaneously, it is then turned on data acquisition.Step（3） If present apparatus is carbonized path device in, and host computer then directly controls controlling switch KM4 closures, then power supply supplies to test loop Electricity；First start arcing, then controlling switch KM4 closures if present apparatus is arc generator, be now equal to AFDD protective loops There are closure series arc faults.Remaining operating procedure and burst series arc faults test procedure（4）（5）（6）It is identical.

Then, carry out series fault arc under limiting temperature to test, AFDD is placed in insulating box, the temperature inside the box point is set Wei not be -5 DEG C and+40 DEG C, its operating procedure and burst series arc faults test procedure.Equally, at each temperature, repeat 3 experiments, and food preservation test data and result of the test.

Tested for parallel arc fault：

First, current limliting parallel arc fault experiment is carried out.Operating procedure is：（1）Controlling switch KM4, KM5, KM6, KM8, KM9, KM10, KM12 are closed, and regulation resistance load is until circuital current reaches test current；（2）Controlling switch KM5, KM6, KM12 break Open, host computer platform signal acquisition module is started working, and gathers circuit voltage and current, and real time data processing and in people in real time Display waveform on machine interactive interface.（3）KM5 is closed, accesses fault electric arc.（4）（5）（6）Happen suddenly series arc faults experiment step Suddenly（4）（5）（6）It is identical.During off-test, control all switches off.

Then, carry out being grounded parallel arc fault experiment.It is with the difference of current limliting parallel arc test procedure, step（1） Need switch position KM4, KM5, KM6, KM8, KM10, KM13, KM14 closure closed；Step（2）In, it is necessary to controlling switch KM5, KM6, KM14 disconnect, remaining operating procedure all same.

Then carry out cutting the experiment of cable parallel arc fault using cutter device.Operating procedure is：（1）Controlling switch KM4, KM12, KM15, KM16 are closed, and regulation resistance load is until circuital current reaches test current；（2）Disconnection switch KM12, KM6, host computer platform signal acquisition module start working, in real time gather circuit voltage and current, and real time data processing and Display waveform on human-computer interaction interface；（3）PC control stepper motor 2 rotates forward, and steel blade is under the drive of motor Operation downwards, start to cut cable, once signal acquisition module collects current signal, motor 2 slows down, until the time specified Run up to the then counter-rotating of controlled motor 2, steel blade, return to extreme higher position；（4）All switch off, signal is adopted Collect module from service；Subsequent step and burst series arc faults test procedure（5）（6）It is identical.

When carrying out shield test reactor, the type for shielding load selects to determine and sends control instruction extremely by host computer platform Control module group A, so as to which Operation switch KM11 work switchings enter the shielding load of corresponding selection.

First, carry out shielding load test without inhibition.Its test operation step is identical with burst series arc faults.

Secondly, A classes band inhibition shielding load test is carried out.Operating procedure is（1）Controlling switch KM4, KM5, KM6, KM9, KM10, KM18 are closed, while the shielding load of controlling switch KM11 switchings；（2）Host computer platform signal acquisition module starts Work, circuit voltage and current, and real time data processing and the display waveform on human-computer interaction interface are gathered in real time；（3）Judge When whether line current is less than 3A, if need not then access arc fault, control all switches off, and directly performs step（6）, Otherwise order performs step（4）；（4）Controlling switch KM6 disconnects, and cable test product is with leading to if present apparatus is carbonized path device Electrical circuit is connected, and host computer platform controls the counter-rotating of stepper motor 2 if present apparatus is arc generator, starts arcing, Now circuit produces fault electric arc suddenly.（5）（6）The step of operating procedure is with burst series fault arc experiment（5）（6）Phase Together；（7）Tested from a kind of lower inhibition shielding load, repeat step（1）-（7）, until all types inhibition shields Load is complete experiment.

Then, order carries out B classes, C classes, D classes inhibition shielding load test and I classes, II classes EMI load shielding examinations Test, armored cable shield test reactor.

The wherein experiment of B classes and the difference of A classes is, in step（1）Middle switch KM18 is without closure, and regulation resistance loads Until circuital current reaches test current, without performing step（3）, remaining operating procedure all same；C classes test the area with A classes It is not, step（1）In need to increase controlling switch KM7 closure, other operating procedure all sames；The difference that D classes test with A classes exists In step（1）Need to increase controlling switch KM8 closure, and adjust regulation resistance load until circuital current reach test current, its Remaining operating procedure all same；The step of I classes, II classes EMI shielding load tests are with armored cable shield test reactor is identical, simply switching The shielding loadtype entered is different, is determined by KM11 by host computer platform control, and shields load test with A classes inhibition Difference is, in step（1）Middle switch KM18 without closure, but need to control KM8, KM19 close, and regulation resistance load until Circuital current reaches test current, remaining operating procedure all same.

Tested for false tripping：

First, crosstalk experiment is carried out：（1）Controlling switch KM4, KM5, KM6, KM7, KM10, KM17 are closed, and regulation resistance load is straight Reach test current to circuital current；（2）Controlling switch KM4,6 are disconnected, and host computer platform signal acquisition module is started working, real When gather circuit voltage and current, and real time data processing and the display waveform on human-computer interaction interface.Subsequent step and closure The step of series arc faults are tested（3）（4）（5）It is identical.Then, carry out testing with various interference loads.（1）Pass through host computer All kinds of inhibition shielding loads of platform courses sequential selection, controlling switch KM11 actions, test a kind of load of switching every time；（2） Controlling switch KM4, KM19 is closed, and AFDD working conditions are fed back to host computer platform by control module group A, and host computer platform judges AFDD action and food preservation test result.

This patent is not limited to above-mentioned preferred forms, and anyone can draw other each under the enlightenment of this patent The Intelligentized test system and method for testing of the electric arc fault protection electrical equipment of kind form, it is all to be done according to scope of the present invention patent Equivalent changes and modifications, should all belong to the covering scope of this patent.

Claims (10)

1. A kind of 1. Intelligentized test system of electric arc fault protection electrical equipment, it is characterised in that including：Failure simulation device, main electricity Road, control module group and test load；The failure simulation device includes：Carbonizing plant, arc generator and cutter device；Institute Stating control module group includes：Control module group A using DSPIC as control core, the control module using data collecting card as core Group B and computer；The test load dress includes：Resistive load and shielding load；The computer is host computer platform.
2. 2. the Intelligentized test system of electric arc fault protection electrical equipment according to claim 1, it is characterised in that：

   Voltage and current acquisition module is provided with the control module group；

   The main circuit includes：AC220V turns 7kV/30mA high-tension transformers and AC220V turns 2kV/300mA high-tension transformers, lamp Bubble, photosensitive sensing module, AFDD interfaces, breaker CB, voltage sensor, current sensor and KM1 to KM19 are switched for 19 totally；

   Described two high-tension transformers are used to carry out high pressure carbonization to cable test product, so that cable test product insulating surface is formed Be carbonized passage；

   The loop that the bulb is formed with KM3, coordinate the photosensitive sensing module, for detecting whether carbonization succeeds；

   The AFDD interfaces are used to connect tested model machine；

   The breaker CB switchs for crosstalk test loop；

   The voltage sensor, current sensor coordinate the voltage and current acquisition module in control module group, to actual track Voltage is nursed one's health, and arc voltage, arc current are acquired；

   The switch is full-controlled switch；

   The main circuit can respectively constitute high pressure carbonization hookup by the cooperation between switch, series arc faults are tested Circuit, current limliting parallel arc fault hookup, ground connection parallel arc fault hookup, cutting cable arc fault examination in parallel Electrical verification road, shield test reactor circuit and false tripping hookup；

   The working condition of the switch is monitored by the host computer platform, the time sequential routine of switch and each independent experiment loop Determined by the host computer platform according to the pilot project for selection；

   Wherein, KM11 is multidirectional grammed switch, for selecting the type of the test load；

   The main circuit between the switch of working condition conflict for being provided with interlock protection measure；

   The access AC220V/50Hz power supplys of the main circuit, the failure simulation device, coincidence circuit are connected by binding post Inside is also connected with the test load.
3. 3. the Intelligentized test system of electric arc fault protection electrical equipment according to claim 2, it is characterised in that：

   The carbonizing plant coordinates high-tension transformer, KM1, KM2, KM3, bulb and the photosensitive sensing module to be used in electric arc event Cable test product is pre-processed before barrier experiment, its surface is formed carbonization passage；Wherein, KM1, AC220V turn 7kV/30mA height Pressure transformer forms high-voltage breakdown loop, and KM2, AC220V turn 2kV/300mA high-tension transformers and form carbonization loop, KM3, bulb With photosensitive sensing module composition carbonization detection module；

   The arc generator includes：Fixed electrode, travelling electrode, stepper motor 1 and limit switch 1；The traveling electrode Translation is driven by stepper motor 1, limit switch 1 moves left and right stroke to traveling electrode and limited；

   The cutter device includes：Steel blade, stepper motor 2 and limit switch 2；The steel blade is driven by stepper motor 2 Dynamic to move up and down, limit switch 2 moves up and down stroke to steel blade and limited；

   KM10 is device selecting switch, carbonizing plant can be selected or from arc generator.
4. 4. the Intelligentized test system of electric arc fault protection electrical equipment according to claim 3, it is characterised in that：The control Module group A includes：DSPIC, carbonization effect identification module, position limitation protection module, main circuit switch isolation control module, main circuit On off state detection module, AFDD state detection modules, protective module for electric machines, photosensitive sensing module, communication module, button reset Circuit, LCD display circuit and program burn writing circuit；

   Wherein, main circuit switch isolation control module is isolated and enhanced processing to DSPIC control signals export, use In the action that driving all switchs, while the switch to not allowing to act simultaneously carries out hardware interlock, avoids causing main circuit short Road failure；

   The main circuit switch state detection module includes：Switch state signal process circuit and isolation protective circuit 1；It is described to open Off status signal processing circuit moves register by multidigit and the status signal of 19 switches is converted into single parallel signal, passes through Isolation protective circuit 1 is inputted in DSPIC, the working condition of each switch is identified after decoding, while switching-state information is transmitted To the host computer platform；

   The AFDD state detection modules include：AFDD state detection circuits and isolation protective circuit 2；

   The protective module for electric machines includes：Limit signal process circuit and isolation protective circuit 3 are formed；The limit signal processing Circuit carries out the signal of limit switch 2 in signal the and described cutter device of limit switch 1 in the arc generator whole Close, form protection signal, to determine whether to take safeguard measure, and transmit information to the host computer platform；

   The sensing unit of the photosensitive sensing module is used to sense the bright dark situation of the bulb；

   The communication module is used to realize that the control module group A communicates with the data between the host computer platform.
5. 5. the Intelligentized test system of electric arc fault protection electrical equipment according to claim 4, it is characterised in that：The control Module group B includes：Data collecting card, the control of stepper motor 1 and protection module, the control of stepper motor 2 and protection module, electricity Pressure and current acquisition module, current acquisition measurement range selection module；

   The data collecting card is installed on PCIE interfaces；

   The stepper motor 1 controls and protection module includes：Isolation protective circuit 4, the driver of stepper motor 1, the spacing guarantor in left and right Protection circuit；

   The stepper motor 2 controls and protection module includes：Isolation protective circuit 5, the driver of stepper motor 2, upper and lower spacing guarantor Protection circuit；

   The data collecting card simulation input connection voltage and current acquisition module, pass through the voltage sensor and electricity in main circuit Line voltage distribution and electric current during flow sensor collection experiment；

   The current acquisition measurement range selection module has 0-5A, 5-25A, 25-100A, more than 100A totally four range gears.
6. 6. the Intelligentized test system of electric arc fault protection electrical equipment according to claim 5, it is characterised in that：It is described upper Machine platform includes：Human-computer interaction interface, main circuit control and on-line monitoring module, failure simulation device control and on-line monitoring mould Block, signal acquisition module, data processing module, electric arc identification module, arc waveform storehouse, test report generation and print module, Historical data has access to module and parameter setting module；

   The human-computer interaction interface is used for the input and output tested, including：Selection experiment project, test load, arc fault Type of device, arrange parameter and dispaly state and parameter；

   The configuration processor of the host computer platform is provided with six parallel threads altogether, wherein：

   First thread is main circuit controling line journey, by the human-computer interaction interface button operation start, for the control The working condition and open that module group A data communication, the working condition of control main circuit, the monitoring main circuit all switch Dynamic second thread；At the end of single test, into wait state；

   Second thread is step motor control thread, for the control to the stepper motor 1 and stepper motor 2；The thread is same When controlled by first thread and the 5th thread；According to the instruction of first thread start, and it is following it is several in the case of, stepper motor 1 and stepper motor 2 be stopped, the thread will enter wait state, including：Travelling electrode in the arc generator or The steel blade of the cutter device run to initial position when, the electrode of the arc generator two contact when, it is described cutting dress When the steel blade put has cut cable test product and when the 5th thread exports halt instruction；

   3rd thread is voltage, current acquisition thread, for gathering circuit voltage and current in real time, and according to the shape of other threads State instructs, and stops data acquisition and enters wait state；3rd thread automatically saves experiment number before each data acquisition terminates According to；

   4th thread is voltage, current signal processing thread, and the thread and the 3rd thread synchronization perform, for handling the 3rd thread The voltage and current collected, the voltage collected, current data are restored to actual value and by ripple according to hardware scaling Shape real-time display carries out electric arc knowledge on described human-computer interaction interface, while using arc voltage and arc current as analysis object Not, calculating parameter；

   5th thread is electric motor protecting thread, is performed simultaneously with the second thread, and the thread is obtained in real time by data communication module The protection signal of the protective module for electric machines transmission, when the travelling electrode or the steel blade excess of stroke, the thread is to second Thread exports halt instruction, and enters wait state；

   Assist energy thread supplemented by 6th thread, for handling all kinds of events on the human-computer interaction interface, including：Parameter is set Put, historical data is had access to, generates or prints test report, starts to test, stops experiment；When without event, the thread is wait State；When starting the generation of experiment event, firing test；When stopping the generation of experiment event, force to stop whole threads.
7. 7. the Intelligentized test system of electric arc fault protection electrical equipment according to claim 6, it is characterised in that：The shielding Load includes：Inhibition shielding load, I classes, II classes electromagnetic interface filter and armored cable；The inhibition shielding load includes： Vacuum cleaner, air compressor machine, Switching Power Supply, electronic dimming lamp, fluorescent lamp, Halogen lamp LED, electric drill.
8. A kind of 8. intelligent testing method of the electric arc fault protection electrical equipment of system according to claim 7, it is characterised in that Including：Series arc faults experiment, parallel arc fault experiment, shield test reactor, false tripping experiment；

   Wherein, the series arc faults experiment includes：The series fault arc that happens suddenly is tested, access series fault arc is tested, Series fault arc under series fault arc experiment and limiting temperature is closed to test；

   The parallel arc fault experiment includes：Current limliting parallel arc fault is tested, the experiment of ground connection parallel arc fault and cutting Cable parallel arc fault is tested；

   The shield test reactor includes：Load test, A classes, B classes, C classes, the band inhibition shielding load examination of D classes are shielded without inhibition Test, I classes, II classes EMI shielding load tests and armored cable shielding load test.
9. 9. the intelligent testing method of electric arc fault protection electrical equipment according to claim 8, it is characterised in that：

   , it is necessary to carry out the state initialization of failure simulation device before testing experiment, including：Carbonizing plant initialization, electric arc Generator initializes and cutter device initialization；

   The method of carbonizing plant initialization is：

   Step A1：The host computer platform sends control instruction to control module group A, the control module group through communication module A control KM3 closure, now, it is described it is photosensitive sensing module senses described in the bright dark situation of bulb, and by the result detected send to Host computer platform；Need to perform high pressure carbonization if bulb does not work, the high pressure carbonization comprises the following steps：

   Step A2：The high-voltage breakdown loop carries out high-voltage breakdown to cable test product：KM1 closures are controlled, KM 1 disconnects after 10 seconds；

   Step A3：The carbonization loop is carbonized to cable test product：KM2 closures are controlled, KM2 disconnects after 1 minute；

   Step A4：Step A1 is performed again, and whether detection cable test product insulating surface forms carbonization passage；

   The method of arc generator initialization is：

   Whether two electrodes that the host computer platform first detects the arc generator completely attach to：If do not completely attached to, Rotated forward through control module group B Driving Stepping Motors 1, until two electrodes completely attach to, stepper motor 1 stops the rotation, simultaneously The host computer platform records traveling electrode stroke；

   The method of cutter device initialization is：

   The host computer platform judges whether steel blade is in extreme higher position, if steel knife according to steel blade history stroke Piece does not recover to extreme higher position, through the counter-rotating of control module group B Driving Stepping Motors 2, so as to drive steel blade to transport upwards Row is until recover to extreme higher position, stepper motor 2 to shut down, while the host computer platform records steel blade displacement.
10. 10. the intelligent testing method of electric arc fault protection electrical equipment according to claim 9, it is characterised in that：

    Before the series arc faults on-test, whole on off states are first initialized, now KM8, KM9, KM10 are closed, remaining Switch off；And happen suddenly series fault arc experiment, the experiment of access series fault arc, closure series fault arc are carried out successively Series fault arc is tested under experiment and limiting temperature；

    It is described burst series arc faults experiment concrete operation step be：

    Step B1：Controlling switch KM4, KM5, KM6, KM7 are closed, until circuital current reaches test current value；

    Step B2：Controlling switch KM7 disconnects, and the host computer platform data start to gather circuit voltage and current in real time, in real time Data processing and the display waveform on human-computer interaction interface；

    Step B3：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

    Step B4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

    Step B5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step B6：Repeat step B1 to step B5 is three times；

    It is described access the concrete operation step with series arc faults load test be：

    Step C1：Controlling switch KM4, KM7 closes, until circuital current reaches test current value；

    Step C2：Controlling switch KM7 disconnects, and the host computer platform data start to gather circuit voltage and current in real time, in real time Data processing and the display waveform on human-computer interaction interface；

    Step C3：Controlling switch KM5 closure, circuit is accessed into fault electric arc；

    Step C4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

    Step C5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step C6：Repeat step C1 to step C5 is three times；

    It is described closure series arc faults experiment concrete operation step be：

    Step D1：Controlling switch KM4, KM5, KM7 are closed, until circuital current reaches test current value；

    Step D2：Controlling switch KM4, KM7 disconnects, and the host computer platform data start to gather circuit voltage and current in real time, Real time data processing and the display waveform on human-computer interaction interface；

    Step D3：Controlling switch KM4 is closed, and produces closure serial arc；

    Step D4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

    Step D5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step D6：Repeat step D1 to step D5 is three times；

    What series fault arc was tested under the limiting temperature concretely comprises the following steps：AFDD is placed in insulating box, temperature in case is set Degree is respectively -5 DEG C or+40 DEG C, and operating procedure is identical with the burst series arc faults test procedure afterwards；

    The parallel arc fault experiment is carried out successively：Current limliting parallel arc fault test, ground connection parallel arc fault experiment and Cut the experiment of cable parallel arc fault；

    The concrete operation step of current limliting parallel arc fault experiment is：

    Step E1：Controlling switch KM4, KM5, KM6, KM8, KM9, KM10, KM12 are closed, until circuital current reaches test current Value；

    Step E2：Controlling switch KM5, KM6, KM12 disconnect, the host computer platform data start to gather in real time line voltage distribution with Electric current, real time data processing and the display waveform on human-computer interaction interface；

    Step E3：Controlling switch KM5 is closed, and circuit is accessed into fault electric arc；

    Step E4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

    Step E5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step E6：Repeat step E1 to step E5 is three times；

    Step E7：During off-test, control all switches off；

    It is described ground connection parallel arc fault experiment concrete operation step be：

    Step F1：Controlling switch KM4, KM5, KM6, KM8, KM10, KM13, KM14 are closed, until circuital current reaches experiment electricity Flow valuve；

    Step F2：Controlling switch KM5, KM6, KM14 disconnect, the host computer platform data start to gather in real time line voltage distribution with Electric current, real time data processing and the display waveform on human-computer interaction interface；

    Step F3：Controlling switch KM5 is closed, and circuit is accessed into fault electric arc；

    Step F4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

    Step F5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step F6：Repeat step F1 to step F5 is three times；

    Step F7：During off-test, control all switches off；

    The concrete operation step of the cutting cable parallel arc fault experiment is：

    Step G1：Controlling switch KM4, KM12, KM15, KM16 are closed, and regulation resistance load is until circuital current reaches experiment electricity Stream；

    Step G2：Switch KM12, KM6 are disconnected, the host computer platform data start to gather circuit voltage and current in real time, in real time Data processing and the display waveform on human-computer interaction interface；

    Step G3：The host computer platform control stepper motor 2 is rotated forward, and steel blade is transported downwards under the drive of motor OK, start to cut cable, once signal acquisition module collects current signal, motor 2 slows down, until the default time then controls The counter-rotating of motor 2, steel blade are run up, and return to extreme higher position；

    Step G4：All switch off, data acquisition module is stopped；

    Step G5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step G6：Repeat step G1 to step G5 is three times；

    The shield test reactor is carried out successively：Load test is shielded without inhibition, A classes, B classes, C classes, the band inhibition shielding of D classes are negative Carry experiment, I classes, II classes EMI shielding load tests and armored cable shielding load test;

    The operating procedure without inhibition shielding load test is identical with burst series arc faults experiment；

    The A classes with inhibition shielding load test concrete operation step be：

    Step H1：Controlling switch KM4, KM5, KM6, KM9, KM10, KM18 is closed, while the shielding of controlling switch KM11 switchings is negative Carry；

    Step H2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

    Step H3：Judge whether line current is less than 3A, if need not then access arc fault, control all switches off, directly Connect and perform step H6, otherwise order performs step H4；

    Step H4：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

    Step H5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step H6：Repeat step H1 to step H5 is three times；

    Step H7：Tested from a kind of lower inhibition shielding load；

    Step H8：Repeat step H1 to step H7, until experiment is all completed in the shielding load of whole inhibitions；

    The B classes with inhibition shielding load test concrete operation step be：

    Step I1：Controlling switch KM4, KM5, KM6, KM9, KM10 closure, while the shielding load of controlling switch KM11 switchings；

    Step I2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

    Step I3：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

    Step I4：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step I5：Repeat step I1 to step I4 is three times；

    Step I6：Tested from a kind of lower inhibition shielding load；

    Step I7：Repeat step I1 to step I6, until experiment is all completed in the shielding load of whole inhibitions；

    The C classes with inhibition shielding load test concrete operation step be：

    Step J1：Controlling switch KM4, KM5, KM6, KM7, KM9, KM10, KM18 are closed, while controlling switch KM11 switchings shield Load；

    Step J2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

    Step J3：Judge whether line current is less than 3A, if need not then access arc fault, control all switches off, directly Connect and perform step J6, otherwise order performs step J4；

    Step J4：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

    Step J5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step J6：Repeat step J1 to step J5 is three times；

    Step J7：Tested from a kind of lower inhibition shielding load；

    Step J8：Repeat step J1 to step J7, until experiment is all completed in the shielding load of whole inhibitions；

    The D classes with inhibition shielding load test concrete operation step be：

    Step K1：Controlling switch KM4, KM5, KM6, KM8, KM9, KM10, KM18 closure, regulation resistance load is until circuital current Reach test current, while the shielding load of controlling switch KM11 switchings；

    Step K2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

    Step K3：Judge whether line current is less than 3A, if need not then access arc fault, control all switches off, directly Connect and perform step K6, otherwise order performs step K4；

    Step K4：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

    Step K5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step K6：Repeat step K1 to step K5 is three times；

    Step K7：Tested from a kind of lower inhibition shielding load；

    Step K8：Repeat step K1 to step K7, until experiment is all completed in the shielding load of whole inhibitions；

    The concrete operation step of the I classes, II classes EMI shielding load tests and armored cable shield test reactor includes：

    Step L1：Controlling switch KM4, KM5, KM6, KM8, KM9, KM10, KM19 closure, regulation resistance load is until circuital current Reach test current, while the shielding load of controlling switch KM11 switchings；

    Step L2：The host computer platform data start to gather circuit voltage and current in real time, real time data processing and man-machine Display waveform on interactive interface；

    Step L3：Judge whether line current is less than 3A, if need not then access arc fault, control all switches off, directly Connect and perform step L6, otherwise order performs step L4；

    Step L4：Controlling switch KM6 disconnects, and produces catastrophic failure electric arc；

    Step L5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    Step L6：Repeat step L1 to step L5 is three times；

    Step L7：Tested from a kind of lower inhibition shielding load；

    Step L8：Repeat step L1 to step L7, until experiment is all completed in the shielding load of whole inhibitions；

    The false tripping experiment includes the crosstalk experiment carried out successively and tested with interference load；

    The concrete operation step of crosstalk experiment is：

    Step M1：Controlling switch KM4, KM5, KM6, KM7, KM10, KM17 are closed, and regulation resistance load is until circuital current reaches Test current；

    Step M2：Controlling switch KM4, KM6 disconnects, and the host computer platform data start to gather circuit voltage and current in real time, Real time data processing and the display waveform on human-computer interaction interface；

    Step M3：Controlling switch KM4 is closed, and produces closure serial arc；

    Step M4：After reaching default specified time, controlling switch KM4, KM5 disconnects, and stops data acquisition；

    Step M5：AFDD working conditions are fed back to host computer platform, the electric arc identification of host computer platform by the control module group A Module is identified to electric arc and calculates related arc parameters, judges whether AFDD implements to protect within the standard stipulated time, with Determine whether AFDD acting characteristics meet to require, preserve and record test data；

    The band interference load tests concrete operation step：

    Step N1：Each inhibition shielding load of KM11 sequential selections is controlled by host computer platform；

    Step N2：Controlling switch KM4, KM19 is closed, and AFDD working conditions are fed back to host computer and put down by the control module group A Platform, host computer platform is judged AFDD actions, and food preservation test result.