CN106655075A - Electric equipment arc fault protection device and electric equipment control system - Google Patents
Electric equipment arc fault protection device and electric equipment control system Download PDFInfo
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- CN106655075A CN106655075A CN201611040975.2A CN201611040975A CN106655075A CN 106655075 A CN106655075 A CN 106655075A CN 201611040975 A CN201611040975 A CN 201611040975A CN 106655075 A CN106655075 A CN 106655075A
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- 238000001514 detection method Methods 0.000 claims abstract description 95
- 230000001012 protector Effects 0.000 claims abstract description 61
- 238000004891 communication Methods 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 8
- 238000004378 air conditioning Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 abstract description 48
- 238000005070 sampling Methods 0.000 abstract description 11
- 230000005611 electricity Effects 0.000 description 17
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
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- 238000009413 insulation Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
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- 230000004044 response Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
- H02H1/0015—Using arc detectors
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Abstract
The application provides a consumer arc fault protection device and consumer control system, the device includes: the circuit breaking protector is arranged on a power supply circuit of the electric equipment; the current detection circuit is used for detecting the working current of the electric equipment; and the output end of the arc fault detection microprocessor is connected with the control end of the circuit breaker protector. The device passes through sampling circuit is automatic right the working current of consumer samples, with sampling current send to arc fault detection microprocessor, arc fault detection microprocessor basis the sampling current carries out the fault arc and judges, when judging when the consumer breaks down the electric arc, controls the breaking protector disconnection to carry out power-off protection to the consumer, thereby can in time discover when the consumer breaks down the electric arc, and carry out power-off protection to the consumer.
Description
Technical field
The present invention relates to equipment working condition detection and resist technology field, and in particular to a kind of electrical equipment electric arc fault protection
Device and electrical equipment control system.
Background technology
With the raising of quality of life, the electrical equipment such as air-conditioning, refrigerator has progressively entered into huge numbers of families, these device interiors
Complex circuit, due to aging circuit or the reason such as internal components are off quality, it is understood that there may be bad electrical connection or inner wire
Break down the problem of electric arc because of insulation ag(e)ing on road.Common fault electric arc reason have it is following some：
1st, sharp device punctures power line extruding causes insulating barrier to be damaged；
2nd, there is rosin joint, loosens or aoxidize in connection line center line and wire terminal, and causes contact resistance excessive, and heating is big.
3rd, correct protection device, such as breaker are not adopted.
4th, wire insulation is aging causes insulating barrier breakdown.
The conventional method for preventing electric arc fire is electricity consumption to be set by the way of air switch (such as breaker) using installing additional
It is standby to be protected, the air switch is controlled when electrical equipment power data is abnormal and is disconnected, because aforesaid way is by detection
The supply current of electrical equipment is protected to electrical equipment, when certain the device failure electric current in electrical equipment, no
Equipment can be protected immediately, only when the fault current is embodied in the supply current of electrical equipment and causes the power supply electricity
When stream meets the off condition of setting, power-off protection can be carried out to equipment, if supply current does not reach off condition,
The breaker cannot carry out open circuit protection to electrical equipment, thus, traditional technical scheme poor reliability, it is impossible to ensure to work as and use
Electric equipment break down electric arc when timely power-off protection is carried out to equipment.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of electrical equipment protection device for arc faults, to realize when electricity consumption sets
It is standby break down electric arc when can find in time, and power-off protection is carried out to electrical equipment.
For achieving the above object, the embodiment of the present invention provides following technical scheme：
A kind of electrical equipment protection device for arc faults, including：
The breaker protector being arranged in the supply line of electrical equipment；
For the current detection circuit detected to the operating current of electrical equipment；
The arc-detection microprocessor that input is connected with the output end of the current detection circuit, the arc fault inspection
The output end of micrometer processor is connected with the control end of the breaker protector.
Preferably, above-mentioned electrical equipment protection device for arc faults, can also include：
The signal modulation circuit and modulus being arranged between the current detection circuit and the arc-detection microprocessor
Change-over circuit.
Preferably, in above-mentioned electrical equipment protection device for arc faults, can also include：
Test circuit, for exporting simulated failure arc current signal to the arc-detection microprocessor.
Preferably, in above-mentioned electrical equipment protection device for arc faults, can also include：
It is arranged between the output end of the arc fault detection microprocessor and the control end of the breaker protector
Breaker protector drive circuit.
Preferably, in above-mentioned electrical equipment protection device for arc faults, the breaker protector is electromagnetism guard relay,
The breaker protector drive circuit is electric drive circuit of magnetic latching relay, and the electric drive circuit of magnetic latching relay is used for
According to the trigger that the arc fault detection microprocessor is exported, the electromagnetism guard relay is driven to thread off.
Preferably, in above-mentioned electrical equipment protection device for arc faults, can also include：
Being connected with the arc-detection microprocessor, the electric-leakage detection circuit for being detected to electrical equipment, mistake
Current detection circuit, over-voltage detection circuit, undervoltage detection circuit and/or short-circuit detecting circuit.
Preferably, in above-mentioned electrical equipment protection device for arc faults, can also include：
The radio signal senders being connected with the arc-detection microprocessor；
The wireless signal receiver being connected with the breaker protector drive circuit, the wireless signal receiver is used to lead to
Cross wireless network obtain radio signal senders output for the control that is controlled to the working condition of breaker protector
Signal processed.
Preferably, in above-mentioned electrical equipment protection device for arc faults, the radio signal senders set for the electricity consumption
Radio signal senders in the standby wireless communication module for carrying.
Preferably, in above-mentioned electrical equipment protection device for arc faults, the quantity of the current detection circuit be it is multiple, often
Individual current detection circuit correspondence detects the operating current of a default functional module in the electrical equipment.
Preferably, in above-mentioned electrical equipment protection device for arc faults, also include：
The webserver, for obtaining when the arc-detection microprocessor detects electrical equipment and arc fault occurs
The fault-signal of generation, according to preset address to user terminal output equipment fault alarm signal.
A kind of electrical equipment control system, in being applied to electrical equipment, including：
Electrical equipment protection device for arc faults described in above-mentioned any one.
Preferably, above-mentioned electrical equipment control system is in air-conditioning equipment.
Based on above-mentioned technical proposal, electrical equipment protection device for arc faults provided in an embodiment of the present invention and electrical equipment
Control system, is sampled to the operating current of the electrical equipment automatically by the sample circuit, and sample rate current is sent
To the arc fault detection microprocessor, the arc fault detection microprocessor carries out failure electricity according to the sample rate current
Arc judges, when the judgement electrical equipment breaks down electric arc, controls the breaker protector and disconnect, to enter to electrical equipment
Row power-off protection, so as to find in time when electrical equipment breaks down electric arc, and carries out power-off protection to electrical equipment.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of structural representation of electrical equipment protection device for arc faults disclosed in the embodiment of the present application；
Fig. 2 is a kind of structural representation of electrical equipment protection device for arc faults disclosed in another embodiment of the application；
Fig. 3 is a kind of structural representation of electrical equipment protection device for arc faults disclosed in the another embodiment of the application；
Fig. 4 is a kind of structural representation of electrical equipment protection device for arc faults disclosed in the application another embodiment；
Fig. 5 is a kind of encapsulating structure schematic diagram of electrical equipment protection device for arc faults disclosed in the embodiment of the present application；
Fig. 6 illustrates for a kind of encapsulating structure of electrical equipment protection device for arc faults disclosed in another embodiment of the application
Figure；
Fig. 7 illustrates for a kind of encapsulating structure of electrical equipment protection device for arc faults disclosed in the another embodiment of the application
Figure；
Fig. 8 illustrates for a kind of encapsulating structure of electrical equipment protection device for arc faults disclosed in the application another embodiment
Figure；
Fig. 9 is a kind of specific works flow process schematic diagram of arc fault detection microprocessor disclosed in the embodiment of the present application.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In being directed to prior art, the problem of electrical equipment is protected scheme poor reliability by breaker, this
Application discloses a kind of electrical equipment protection device for arc faults, and referring to Fig. 1, the device can include：
The breaker protector 10 being arranged in the supply line of electrical equipment, the breaker protector 10 is used for when electricity consumption sets
When standby supply current exceedes the protection value of its own configuration, power-off protection is carried out to the electrical equipment, and ought be got
Arc-detection microprocessor 30 output for characterize electrical equipment break down electric arc trigger when, the electricity consumption is set
It is standby to carry out power-off protection；
For the current detection circuit 20 detected to the operating current of electrical equipment, the current detection circuit 20 is used
Sample in the operating current to electrical equipment, the sample rate current that sampling is obtained is sent to the arc-detection microprocessor
30, wherein, the operating current also refers to the electric current in electrical equipment supply line, it is also possible to refers to the electricity consumption and sets
The operating current of standby interior certain functional module；
The arc-detection microprocessor 30 that input is connected with the output end of the current detection circuit 20, the electric arc event
The output end of barrier detection microprocessor 30 is connected with the control end of the breaker protector 10, the arc fault detection microprocessor
The sample rate current that device 30 is used to be exported according to the current detection circuit 20 carries out breakdown judge to the electrical equipment, judges institute
State electrical equipment whether to break down electric arc, if it is, exporting the control signal for triggering the disconnection of the breaker protector 10.
Work when the electrical equipment is in running order, by the sample circuit 20 automatically to the electrical equipment
Sampled as electric current, sample rate current is sent to the arc fault detection microprocessor 30, the arc fault detection is micro-
Processor 30 carries out fault electric arc judgement according to the sample rate current, when the judgement electrical equipment breaks down electric arc, control
Make the breaker protector 10 to disconnect, to carry out power-off protection to electrical equipment, so as to when electrical equipment breaks down electric arc
Can in time find, and power-off protection is carried out to electrical equipment.
Disclosed in the embodiment of the present application in such scheme, the arc fault detection microprocessor 30 can choose existing
Existing fault arc detection device in technology.Certainly, in order to improve the accuracy of judged result, the mixed of fault electric arc is referred to
Ignorant attribute, the relevant judgment rule as needed for chaos recognizes thought extraction fault electric arc deterministic process, thus, the application can be pre-
The decision rule of arc fault is first set in the arc fault detection microprocessor 30, when the output of current sampling circuit 20
When sample rate current meets above-mentioned regular, that is, judge that electrical equipment breaks down electric arc.In order to preferably formulate above-mentioned decision rule,
Applicant have collected in advance substantial amounts of arc signal data, set up fault electric arc database, as much as possible from various loads,
Fault electric arc waveform under by analyzing various loads, sum up with electrical equipment break down electric arc when, operating current
General properties and special nature, the analysis for arc fault provides basic guarantee, and applicant is had found by analysis, fault electric arc
Feature generalizations get up can be included：
(1) arc current no longer has periodically, imperfect in some current cycle waveforms, in front and back the electricity in adjacent periods
Stream different wave shape is larger.
(2) arc current does not have symmetry, and the positive-negative half-cycle waveform difference opposite sex is larger in same period.
(3) there is a period of time that electric current is zero in zero crossing position in arc current, i.e. " zero stops the time ".
(4) is there is substantial amounts of high-frequency harmonic in arc current, and arc current local has high frequency to do during arc burning
Disturb, there is high-frequency impulse in the moment electric current of electric arc initial turn-on, this phenomenon is in the circuit of inductive load and capacitive load
Become apparent from.
(5) there is the current break moment near zero-crossing point arc current.
(6) arc current is more slightly smaller than normal current amplitude.
When occurring the electric current of features described above amount in the operating current of electrical equipment, that is, show that event occurs in above-mentioned electrical equipment
Barrier electric arc, control breaker protector 10 carries out power-off protection to electrical equipment.
Specifically, the arc fault detection microprocessor 30 is configured to：Obtain the current sampling circuit 20 to export
Sample rate current, when the sample rate current meets the default decision rule of any one, control breaker protector is to electrical equipment
Carry out power-off protection；
The default decision rule includes：Sample rate current waveform is adjacent the current waveform in the cycle not in current period
Unanimously, the sample rate current waveform in current period does not possess symmetry, sample rate current and surpasses in the duration that zero crossing remains continuously 0
Cross preset duration, sample rate current and high-frequency harmonic, and the duration of the high-frequency harmonic occur more than setting threshold values, with zero crossing
To there is the amplitude of mutation current and/or sample rate current in the Preset Time interval of middle time point less than setting amplitude.
In technical scheme disclosed in another embodiment of the application, referring to Fig. 9, whether occurs event in electrical equipment is judged
The arc fault detection microprocessor 30 is specifically configured to during barrier electric arc：
Step S101：FFT is carried out to the sample rate current of a cycle；
Step S102：Calculate the modulus value of each harmonic；
The sample frequency of the current sampling circuit can be designed as the sequence of A frequency multiplication of power frequency, therefore treated length for A
Row obtain A harmonic constant, are then calculated the modulus value of each harmonic wave；
Step S103：Calculate characteristic vector；
In this step, symmetry is gripped altogether due to DFT, therefore only retain the A/2 harmonic constant for collecting, above-mentioned A/2
Individual harmonic constant refers to the virtual value of the DC component, fundamental wave and (A/2) -1 order harmonic components of sample rate current, to above-mentioned A/2
Individual harmonic constant is normalized, and obtains harmonic wave virtual value, and the harmonic wave virtual value of reservation removes base divided by fundamental wave virtual value
Wave component, it is vectorial for the harmonic characteristic of (A/2) -1 to calculate length, and described in characteristic vector signal waveform information is contained.Harmonic wave
Coefficient module：P (n), n=1,2 ... ..., (A/2) -1；Characteristic vector：X (n)=P (n)/P (1), extracts characteristic vector；
Step S104：When detect there is electric arc when, judge the type of electric arc, when the equipment of detecting occur abnormal failure electricity
During arc, execution step S105, when there is abnormal arc in the equipment of detecting, execution step S106；
In this step, by the size of calculating each harmonic component, the shape information of sample rate current, Yi Jibo are just detected
The distortion degree of shape, so as to identify electrical equipment in whether faulty electric arc produce；
Step S105：Judge whether the number of times that the abnormal arc occurs in preset time period reaches setting value, if it is,
Execution step S107；
Step S106：Control the breaker protector to disconnect；
Step S107：Control device enters stoppage protection state, judges whether the abnormal arc disappears, if not, holding
Row step S106.
In scheme disclosed in another embodiment of the application, it is contemplated that the fault electric arc under some states does not affect electricity consumption to set
It is less for work, or the infringement to electrical equipment, the situation of power-off protection now can not be carried out to the electrical equipment, it is described
Arc fault detection microprocessor 30 can be additionally configured to：
When break down during the electrical equipment is judged according to the sample rate current electric arc when, judge that the fault electric arc is
During no fault electric arc for the first kind, if it is, control the breaker protector 10 carries out power-off protection to electrical equipment, such as
Really no, counter, timer start timing, when the timer reaches setting duration, judge the count value of the counter
Whether setting value is more than, if greater than setting value, controlling described 10 pairs of electrical equipments of breaker protector carries out power-off protection,
Wherein, the first kind fault electric arc is the default fault electric arc that can cause larger harm to electrical equipment.
In order to improve the correctness of the testing result of arc fault detection microprocessor 30, it is prevented because in sample rate current
Interference signal produce erroneous judgement, referring to Fig. 2, in technical scheme disclosed in the above embodiments of the present application, can also include：
The He of signal modulation circuit 40 being arranged between the current detecting electricity 10 and the arc-detection microprocessor 30
Analog to digital conversion circuit 50, wherein, the signal modulation circuit 40 is used for the sample rate current collected to the current sampling circuit
It is modulated, analog-digital conversion circuit as described 50, for the sample rate current after modulation to be changed for convenience of the micro- place of the arc-detection
The data signal that reason device 30 judges.
When protecting to electrical equipment using above-mentioned electrical equipment protection device for arc faults, only work as electrical equipment
Break down electric arc when, the said equipment just can control breaker protector 10 and turn off, and works as and occur without in electrical equipment fault electric arc
When, user cannot actively judge whether the electrical equipment protection device for arc faults is capable of the failure of normal response electrical equipment
Electric arc, when user power utilization equipment protection device for arc faults cannot respond to the fault electric arc and user does not find in time,
After the electrical equipment breaks down electric arc, it is on fire to directly contribute electrical equipment, in this regard, referring to Fig. 2, in the application
In stating said apparatus disclosed in embodiment, can also include：
Test circuit 60, for exporting simulated failure arc current signal, design to the arc-detection microprocessor 30
Personnel arrange one or more different types of fault electric arc signal in the test circuit 60, when user triggers the test
During circuit 60, the test circuit 60 is to the signal modulation circuit 40, analog to digital conversion circuit 50 or directly to electric arc inspection
Micrometer processor 30 exports the fault electric arc signal matched with user operation.Now, when user triggers the test circuit 60
Afterwards, if the breaker protector 10 disconnects, show that the electrical equipment protection device for arc faults can normal work.
Disclosed in the above embodiments of the present application in technical scheme, the type of the breaker protector 10 can be according to user
Demand is voluntarily selected, and for example it can be electromagnetism guard relay.When the arc-detection microprocessor 30 judges electrical equipment
In break down electric arc when, the possibility of the arc-detection microprocessor 30 output is only an instantaneous level signal, conventional
Breaker protector is difficult to perform power-off protection action directly in response to the level signal, in this regard, referring to Fig. 2, the above-mentioned enforcement of the application
In the disclosed technical scheme of example, can also include：
Be arranged on the output end of the arc fault detection microprocessor 30 and the breaker protector 10 control end it
Between breaker protector drive circuit 70, the breaker protector drive circuit 70 be used for obtain the micro- place of the arc fault detection
The reason output of device 30 is broken down the trigger of electric current for characterizing the electrical equipment, when getting the trigger
Afterwards, to the output drive signal of the breaker protector 10, to drive the breaker protector 10 to disconnect, electrical equipment is broken
Electric protection.
It is more safe and reliable to device powers down in order to ensure disclosed in the above embodiments of the present application in technical scheme,
The breaker protector 10 can be electromagnetism guard relay, and now, the breaker protector drive circuit 70 is electromagnetism holding
Relay drive circuit, the electric drive circuit of magnetic latching relay gets the arc fault detection microprocessor for working as
After the triggers of 30 outputs, drive the electromagnetism guard relay to perform trip action so that electrical equipment and power supply it
Between physics power-off, improve the reliability of power-off, effectively reduce user and occur the possibility of error shock when electrical equipment is keeped in repair.
Disclosed in the above embodiments of the present application in scheme, referring to Fig. 2, it is also configured with for powering to each operational module
Power module 90, the power module 90 can include：Switching Power Supply 91 and voltage conversion circuit 92, the voltage transformation module
92 operating voltages being used for needed for the voltage conversion into each operational module for exporting the Switching Power Supply 91.
Electrical equipment in the course of the work, if equipment is chronically at leakage condition, over-current state, overvoltage condition, under-voltage
When state or short-circuit condition, it is possible to the damage of unrepairable can be caused to equipment, in this regard, in order to carry out to the electrical equipment
Stricter protection, referring to Fig. 2, can also include in such scheme：
Electric-leakage detection circuit 80, over-current detection circuit 81, over-voltage detection circuit 82, undervoltage detection circuit 83 and/or short circuit
Circuit 84 is detected, and the sample rate current that above-mentioned each circuit can be detected by the current sampling circuit 20 sets to electricity consumption
It is standby to carry out dependent failure judgement, when electrical equipment is determined in malfunction, the breaker protector 10 is controlled to electricity consumption
Equipment carries out power-off protection, wherein, above-mentioned electric-leakage detection circuit 80, over-current detection circuit 81, over-voltage detection circuit 82, under-voltage inspection
Slowdown monitoring circuit 83 and short-circuit detecting circuit 84 determine electrical equipment in malfunction when, can directly to the breaker protector
10 export the control signal for controlling its disconnection, naturally it is also possible to controlled by the breaker protector drive circuit 70 described
Breaker protector 10 disconnects, and certainly, it can also send the control signal into the arc-detection microprocessor 30, by institute
State arc-detection microprocessor 30 and control the electrical equipment execution power-off protection of the breaker protector 30 pairs, it is now, described
Arc-detection microprocessor 30 is configured to, and electric arc or the electro-detection is got when detecting electrical equipment and breaking down
The output of circuit 80, over-current detection circuit 81, over-voltage detection circuit 82, undervoltage detection circuit 83 and/or short-circuit detecting circuit 84
After control signal, control the breaker protector 10 directly or by the breaker protector drive circuit 70 and electrical equipment is entered
Row power-off protection.
In order to simplify site environment, referring to Fig. 3 and Fig. 4, in the application such scheme, the breaker protector drive circuit
Can be communicated by wireless network between 70 and the arc-detection microprocessor 30, i.e. in such scheme, can also be wrapped
Include：
The first wireless communication module W1 being connected with the arc-detection microprocessor 30, the wireless communication module W1 is extremely
Radio signal senders are built-in with less；
The second wireless communication module W2 being connected with the breaker protector drive circuit 70, in wherein Fig. 4, described first
Wireless communication module W1 is the wireless communication module that the electrical equipment is carried, at least built-in in second wireless communication module
There is wireless signal receiver, the wireless signal receiver is used to obtain the radio signal senders output by wireless network
For the control signal that is controlled to the working condition of breaker protector 10.Wherein, when the electrical equipment is to enter
During the smart machine of row remotely control, the first wireless communication module W1 can be the radio communication that the electrical equipment is carried
Module.
Referring to Fig. 5-Fig. 8, disclosed in the above embodiments of the present application in technical scheme, the breaker protector can be with institute
The attaching plug overall package of electrical equipment is stated, these parts are packaged together, the electrical equipment electric arc fault protection dress
Other modules put can be integrated in same PCB, in the protective housing of setting.When the electricity consumption
During equipment protection device for arc faults failure, for convenience user change electrical equipment protection device for arc faults, its with it is described
Separate can place between electrical equipment；Of course for simplified site environment, the electrical equipment protection device for arc faults
In breaker protector 10, the breaker protector drive circuit 70 and the attaching plug carry out overall package, the use
Miscellaneous part in electric equipment protection device for arc faults can be integrated in same PCB, and the circuit board collection is installed on
Inside the electrical equipment, now, between the arc-detection microprocessor 30 and the breaker protector drive circuit 70
Communication line may be disposed in the power line of the electrical equipment；Certainly, it should be noted that when the breaker protector drives
When carrying out radio communication between circuit 70 and the arc-detection microprocessor 30, the second wireless communication module W2 is equally
Need to be with the attaching plug, breaker protector and breaker protector drive circuit overall package together with.
In order to more accurately be protected to electrical equipment, can arrange in the electrical equipment protection device for arc faults
There are multiple current detection circuits, a default functional module in each described electrical equipment of current detection circuit correspondence detection
Operating current, such as described electrical equipment be air-conditioning when, the default functional module also refers to the electric mechanical, electrical of air-conditioning
Heating and compressor etc..It is of course also possible to multiple electrical equipment protection device for arc faults are set with electrical equipment each
Functional module carries out error protection, now, between each electrical equipment protection device for arc faults share a breaker protector 10,
The wireless communication module W2 of short-circuit protector drive circuit 70 and second.
Further, in such scheme when needing to carry out breakdown judge to multiple default functional modules, due to function
The type of module is different, and it judges whether the functional module judgment rule of arc fault occurs also with regard to difference, thus, above-mentioned side
In case, the arc fault detection microprocessor 30 is additionally operable to：Calculate the normal current obtained by the sampling of current sampling circuit 20
Harmonic characteristic vector be compared with the harmonic characteristic vector of all functional modules of pre-stored, determine the difference of two squares minimum work(
Can module, transfer whether the judgment rule that matches with the functional module breaks down the sentencing of electric arc as the functional module
Disconnected foundation.
In technical scheme disclosed in the embodiment of the application one, when electrical equipment breaks down, in order to right in time
User is reminded, and such scheme can also include a webserver, and for obtaining the arc-detection microprocessor 30 is worked as
The fault-signal that being exported during arc fault occurs in electrical equipment is detected, when the fault-signal is got, according to default ground
Location to user terminal output equipment fault alarm signal, the user terminal can be the equipment such as mobile phone, PC.
Above-mentioned electrical equipment protection device for arc faults can be with wireless access cell fire alarm certre, as fire alarm
Use, specifically, when the control breaker protector 10 carries out open circuit protection to electrical equipment, to the cell fire protection warning
Center exports a cue.
Can be detected with built-in smog or gas detection sensor in above-mentioned electrical equipment protection device for arc faults simultaneously
Smog when there is arc burning or during gas, outputting alarm signal.
It is understood that in a upper scheme, the arc-detection microprocessor 30 is additionally operable to, and sets when electricity consumption is detected
It is standby to occur generating during arc fault and exporting fault-signal to the webserver, wherein, the fault-signal can include：Equipment
Type information, device address information, the type information of functional module that breaks down, the webserver is getting
After stating fault-signal, the fault-signal is parsed, obtain above-mentioned parameters information, then obtained by default mapping table
The preset address information matched with the device address information, to defeated with user's middle-end of the preset address information match
Go out alarm signal, the alarm signal can include：The type information of equipment, the type information of the functional module for breaking down,
And the type information of failure, the fault type also refers to, and equipment breaks down electric arc, excessively stream, over-pressed or under-voltage etc.
Failure, certainly, the preset address information can also be directly contained in the alarm signal.
Corresponding to above-mentioned electrical equipment protection device for arc faults, disclosed herein as well is a kind of electrical equipment control system
System, can apply in the electrical equipment control system has the electrical equipment electricity disclosed in the above-mentioned any one embodiment of the application
Arc failure protecting device, wherein, the electrical equipment also refers to the equipment such as air-conditioning, refrigerator.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (12)
1. a kind of electrical equipment protection device for arc faults, it is characterised in that include：
The breaker protector being arranged in the supply line of electrical equipment；
For the current detection circuit detected to the operating current of electrical equipment；
The arc-detection microprocessor that input is connected with the output end of the current detection circuit, the arc fault detection is micro-
The output end of processor is connected with the control end of the breaker protector.
2. electrical equipment protection device for arc faults according to claim 1, it is characterised in that also include：
The signal modulation circuit being arranged between the current detection circuit and the arc-detection microprocessor and analog-to-digital conversion
Circuit.
3. electrical equipment protection device for arc faults according to claim 1, it is characterised in that also include：
Test circuit, for exporting simulated failure arc current signal to the arc-detection microprocessor.
4. electrical equipment protection device for arc faults according to claim 1, it is characterised in that also include：
The open circuit being arranged between the output end of the arc fault detection microprocessor and the control end of the breaker protector
Protector drive circuit.
5. electrical equipment protection device for arc faults according to claim 4, it is characterised in that the breaker protector is
Electromagnetism guard relay, the breaker protector drive circuit is electric drive circuit of magnetic latching relay, the electromagnetism keep after
Electrical apparatus driving circuit is used for the trigger exported according to the arc fault detection microprocessor, drive the electromagnetism keep after
Electrical equipment is threaded off.
6. electrical equipment protection device for arc faults according to claim 1, it is characterised in that also include：
Electric-leakage detection circuit being connected with the arc-detection microprocessor, for being detected to electrical equipment, excessively stream inspection
Slowdown monitoring circuit, over-voltage detection circuit, undervoltage detection circuit and/or short-circuit detecting circuit.
7. electrical equipment protection device for arc faults according to claim 4, it is characterised in that also include：
The radio signal senders being connected with the arc-detection microprocessor；
The wireless signal receiver being connected with the breaker protector drive circuit, the wireless signal receiver is used to pass through nothing
The control for being controlled to the working condition of breaker protector that radio signal senders described in line Network Capture are exported is believed
Number.
8. electrical equipment protection device for arc faults according to claim 7, it is characterised in that the wireless signal sends
Device is the radio signal senders in the wireless communication module that the electrical equipment is carried.
9. electrical equipment protection device for arc faults according to claim 7, it is characterised in that the current detection circuit
Quantity for multiple, the work of a default functional module in each described electrical equipment of current detection circuit correspondence detection
Electric current.
10. electrical equipment protection device for arc faults according to claim 1, it is characterised in that also include：
The webserver, generate when arc fault occurs in electrical equipment for obtaining when the arc-detection microprocessor is detected
Fault-signal, according to preset address to user terminal output equipment fault alarm signal.
11. a kind of electrical equipment control systems, in being applied to electrical equipment, it is characterised in that include：
Electrical equipment protection device for arc faults described in claim 1-10 any one.
12. electrical equipment control systems according to claim 11, it is characterised in that the electrical equipment is air-conditioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040975.2A CN106655075A (en) | 2016-11-18 | 2016-11-18 | Electric equipment arc fault protection device and electric equipment control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040975.2A CN106655075A (en) | 2016-11-18 | 2016-11-18 | Electric equipment arc fault protection device and electric equipment control system |
Publications (1)
| Publication Number | Publication Date |
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| CN106655075A true CN106655075A (en) | 2017-05-10 |
Family
ID=58812653
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611040975.2A Pending CN106655075A (en) | 2016-11-18 | 2016-11-18 | Electric equipment arc fault protection device and electric equipment control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106655075A (en) |
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| CN109239561A (en) * | 2018-11-29 | 2019-01-18 | 宁波习羽智能科技有限公司 | Slave, host and detector for split type fault electric arc detector |
| CN110579694A (en) * | 2019-10-10 | 2019-12-17 | 珠海格力电器股份有限公司 | arc fault detection method and device, storage medium and processor |
| CN110908844A (en) * | 2019-10-24 | 2020-03-24 | 珠海格力电器股份有限公司 | Arc fault detection method and device, computer readable storage medium and socket |
| CN112583000A (en) * | 2020-11-25 | 2021-03-30 | 中国科学技术大学先进技术研究院 | Fault arc identification tripping device |
| CN112731140A (en) * | 2020-12-03 | 2021-04-30 | 深圳供电局有限公司 | Power consumption equipment running state detection device |
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