CN206517030U - A kind of electrical equipment protection device for arc faults and electrical equipment control system - Google Patents
A kind of electrical equipment protection device for arc faults and electrical equipment control system Download PDFInfo
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- CN206517030U CN206517030U CN201621240516.4U CN201621240516U CN206517030U CN 206517030 U CN206517030 U CN 206517030U CN 201621240516 U CN201621240516 U CN 201621240516U CN 206517030 U CN206517030 U CN 206517030U
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Abstract
The application provides a kind of electrical equipment protection device for arc faults and electrical equipment control system, and described device includes：It is arranged at the breaker protector in the supply line of electrical equipment；The current detection circuit detected for the operating current to electrical equipment；The arc-detection microprocessor that input is connected with the output end of the current detection circuit, the output end of the arc-detection microprocessor is connected with the control end of the breaker protector.The device is sampled by the automatic operating current to the electrical equipment of the sample circuit; sample rate current is sent to the arc-detection microprocessor; the arc-detection microprocessor carries out fault electric arc judgement according to the sample rate current; when judging the electrical equipment failure electric arc; the breaker protector is controlled to disconnect; to carry out power-off protection to electrical equipment, so as to can be found in time when electrical equipment failure electric arc, and power-off protection is carried out to electrical equipment.
Description
Technical field
The utility model is related to equipment working condition detection and protection technique field, and in particular to a kind of electrical equipment 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
Road broken down because of insulation ag(e)ing electric arc the problem of.Common fault electric arc reason have it is following some：
1st, sharp device, which punctures power line extruding, causes insulating barrier to be damaged；
2nd, there is rosin joint, loosen or aoxidize in connection line center line and wire terminal, and cause contact resistance excessive, heating is big.
3rd, without using correct protection device, such as breaker.
4th, wire insulation aging causes insulating barrier breakdown.
The conventional method for preventing electric arc fire is that electricity consumption is set by the way of air switch (such as breaker) is installed additional
It is standby to be protected, control the air switch to disconnect when power supply for electrical equipment data exception, because aforesaid way passes through detection
The supply current of electrical equipment is protected to electrical equipment, when some 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 can not carry out open circuit protection, thus, traditional technical scheme poor reliability to electrical equipment, it is impossible to ensure to work as and use
Timely power-off protection is carried out to equipment during electric equipment failure electric arc.
Utility model content
In view of this, the utility model embodiment provides a kind of electrical equipment protection device for arc faults, is used with realizing to work as
It can in time be found during electric equipment failure electric arc, and power-off protection is carried out to electrical equipment.
To achieve the above object, the utility model embodiment provides following technical scheme：
A kind of electrical equipment protection device for arc faults, including：
It is arranged at the breaker protector in the supply line of electrical equipment；
The current detection circuit detected for the operating current to electrical equipment；
The arc-detection microprocessor that input is connected with the output end of the current detection circuit, the arc-detection is micro-
The output end of processor is connected with the control end of the breaker protector.
It is preferred that, above-mentioned electrical equipment protection device for arc faults can also include：
It is arranged on signal modulation circuit and modulus between the current detection circuit and the arc-detection microprocessor
Change-over circuit.
It is preferred that, in above-mentioned electrical equipment protection device for arc faults, it can also include：
Test circuit, for exporting simulated failure arc current signal to the arc-detection microprocessor.
It is preferred that, in above-mentioned electrical equipment protection device for arc faults, it can also include：
It is arranged on the open circuit between the output end of the arc-detection microprocessor and the control end of the breaker protector
Protector drive circuit.
It is preferred that, 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
The trigger signal exported according to the arc-detection microprocessor, drives the electromagnetism guard relay to thread off.
It is preferred that, in above-mentioned electrical equipment protection device for arc faults, it 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.
It is preferred that, in above-mentioned electrical equipment protection device for arc faults, it 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 the control for being used to be controlled the working condition of breaker protector that wireless network obtains the radio signal senders output
Signal processed.
It is preferred that, in above-mentioned electrical equipment protection device for arc faults, the radio signal senders are that the electricity consumption is set
Radio signal senders in the standby wireless communication module carried.
It is preferred that, in above-mentioned electrical equipment protection device for arc faults, the quantity of the current detection circuit be it is multiple, often
The operating current of a default functional module in the individual current detection circuit correspondence detection electrical equipment.
It is preferred that, in above-mentioned electrical equipment protection device for arc faults, in addition to：
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, applied in electrical equipment, including：
Electrical equipment protection device for arc faults described in above-mentioned any one.
It is preferred that, above-mentioned electrical equipment control system is in air-conditioning equipment.
The electrical equipment protection device for arc faults provided based on above-mentioned technical proposal, the utility model embodiment and electricity consumption
Apparatus control system, is sampled by the automatic operating current to the electrical equipment of the sample circuit, by sample rate current
Send to the arc-detection microprocessor, the arc-detection microprocessor carries out fault electric arc according to the sample rate current and sentenced
It is disconnected, when judging the electrical equipment failure electric arc, control the breaker protector to disconnect, to be broken to electrical equipment
Electric protection, so as to can be found in time when electrical equipment failure electric arc, and carries out power-off protection to electrical equipment.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer.
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-detection microprocessor disclosed in the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
It is directed in the prior art, the problem of the scheme poor reliability protected by breaker to electrical equipment, 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 in the supply line of electrical equipment is arranged at, the breaker protector 10 is used for when electricity consumption is set
When standby supply current exceedes the protection value of its own configuration, power-off protection is carried out to the electrical equipment, and ought get
During the trigger signal for characterizing electrical equipment failure electric arc that arc-detection microprocessor 30 is exported, the electricity consumption is set
It is standby to carry out power-off protection；
The current detection circuit 20 detected for the operating current to electrical equipment, the current detection circuit 20 is used
Sampled 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 on power supply for electrical equipment circuit, can also refer to that the electricity consumption is set
The operating current of some standby interior functional module；
The arc-detection microprocessor 30 that input is connected with the output end of the current detection circuit 20, the electric arc inspection
The output end of micrometer processor 30 is connected with the control end of the breaker protector 10, and the arc-detection microprocessor 30 is used for
Breakdown judge is carried out to the electrical equipment according to the sample rate current that the current detection circuit 20 is exported, judges that the electricity consumption is set
The standby electric arc that whether breaks down, if it is, exporting for triggering the control signal that the breaker protector 10 disconnects.
When the electrical equipment is in running order, pass through the automatic work to the electrical equipment of the sample circuit 20
Make electric current to be sampled, sample rate current is sent to the arc-detection microprocessor 30, the arc-detection microprocessor 30
Fault electric arc judgement is carried out according to the sample rate current, when judging the electrical equipment failure electric arc, is controlled described disconnected
Road protector 10 disconnects, to carry out power-off protection to electrical equipment, so that can be timely when electrical equipment failure electric arc
It was found that, and power-off protection is carried out to electrical equipment.
In such scheme disclosed in the embodiment of the present application, the arc-detection microprocessor 30 can choose prior art
In existing fault arc detection device.Certainly, in order to improve the accuracy of judged result, the chaos category of fault electric arc is referred to
Property, the relevant judgment rule as needed for chaos recognizes thought extraction fault electric arc deterministic process, thus, the application can exist in advance
The decision rule of arc fault, the sample rate current exported when current sampling circuit 20 are set in the arc-detection microprocessor 30
When meeting above-mentioned regular, that is, judge electrical equipment failure electric arc.In order to preferably formulate above-mentioned decision rule, applicant is pre-
Substantial amounts of arc signal data are first have collected, fault electric arc database is set up, it is as much as possible to select a variety of loads, pass through analysis
Fault electric arc waveform under a variety of loads, when summing up with electrical equipment failure electric arc, the general properties of operating current
And special nature, basic guarantee is provided for the analysis of arc fault, applicant is had found by analysis, the feature generalizations of fault electric arc
Getting up to include：
(1) arc current no longer has periodically, electricity front and rear adjacent periods in imperfect in some current cycle waveforms
Flow different wave shape larger.
(2) arc current does not have symmetry, and the positive-negative half-cycle waveform difference opposite sex is larger in same period.
(3) arc current occurs a period of time that electric current is zero in zero crossing position, i.e. " zero stops the time ".
(4) is there is substantial amounts of high-frequency harmonic in arc current, and arc current locally has high frequency to do during arc burning
Disturb, electric current has high-frequency impulse at the time of electric arc initial turn-on, and this phenomenon is in inductive load and the circuit of 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
Hinder electric arc, control breaker protector 10 carries out power-off protection to electrical equipment.
Specifically, the arc-detection microprocessor 30 is configured as：Obtain adopting for the output of current sampling circuit 20
Sample electric current, when the sample rate current, which meets any one, presets decision rule, control breaker protector is carried out to electrical equipment
Power-off protection；
The default decision rule includes：Current waveform in current period in the sample rate current waveform cycle adjacent thereto is not
Unanimously, the sample rate current waveform in current period does not possess symmetry, sample rate current and surpassed in the duration that zero crossing remains continuously 0
Cross preset duration, sample rate current and high-frequency harmonic occur, and the duration of the high-frequency harmonic exceedes 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-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 A frequency multiplication of power frequency, therefore treated length is A sequence
Row obtain A harmonic constant, then calculate the modulus value for obtaining each harmonic wave；
Step S103：Calculate characteristic vector；
In this step, symmetry is gripped due to DFT altogether, therefore only retains the A/2 harmonic constant collected, above-mentioned A/2
Individual harmonic constant refers to the virtual value of 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, the harmonic wave virtual value divided by fundamental wave virtual value of reservation remove base
Wave component, calculates the harmonic characteristic vector that length is (A/2) -1, contains signal waveform information described in characteristic vector.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 detect equipment occur abnormal failure electricity
During arc, step S105 is performed, when detecting equipment and abnormal arc occur, step S106 is performed；
In this step, by calculating the size of each harmonic component, the shape information of sample rate current, Yi Jibo are just detected
The distortion degree of shape, so as to identify whether faulty electric arc is produced in electrical equipment；
Step S105：Judge whether the number of times that the abnormal arc occurs in preset time period reaches setting value, if it is,
Perform step S107；
Step S106：The breaker protector is controlled 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 influence electricity consumption to set
Standby work, or the infringement to electrical equipment are smaller, and the situation of power-off protection can not be now carried out to the electrical equipment, described
Arc-detection microprocessor 30 can be additionally configured to：
When judging failure electric arc in the electrical equipment according to the sample rate current, judge that the fault electric arc is
During no fault electric arc for the first kind, if it is, controlling the breaker protector 10 to carry 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 it is more than setting value, if greater than setting value, controls 10 pairs of the breaker protector electrical equipment to carry out power-off protection,
Wherein, the first kind fault electric arc can cause the fault electric arc of larger harm to be default to electrical equipment.
In order to improve the correctness of the testing result of arc-detection microprocessor 30, prevent it because dry in sample rate current
Disturb signal and produce erroneous judgement, referring to Fig. 2, in technical scheme disclosed in the above embodiments of the present application, can also include：
It is arranged on the He of signal modulation circuit 40 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
Manage the data signal that device 30 judges.
When being protected using above-mentioned electrical equipment protection device for arc faults to electrical equipment, only work as electrical equipment
During failure electric arc, the said equipment just can control breaker protector 10 and turn off, and works as in electrical equipment and occur without fault electric arc
When, user can not 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 have found in time,
After the electrical equipment failure electric arc, it is on fire to directly contribute electrical equipment, in this regard, referring to Fig. 2, in the application
State in 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 set one or more different types of fault electric arc signals in the test circuit 60, when user triggers the test
During circuit 60, the test circuit 60 is examined to the signal modulation circuit 40, analog to digital conversion circuit 50 or directly to the electric arc
Micrometer processor 30 is exported operates the fault electric arc signal matched with user.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.
In technical scheme disclosed in the above embodiments of the present application, 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
During middle failure electric arc, the possibility that the arc-detection microprocessor 30 is exported only is 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 implementation of the application
In the disclosed technical scheme of example, it can also include：
It is arranged between the output end of the arc-detection microprocessor 30 and the control end of the breaker protector 10
Breaker protector drive circuit 70, the breaker protector drive circuit 70 is defeated for obtaining the arc-detection microprocessor 30
Being used for of going out characterizes the trigger signal of the electrical equipment failure electric current, after the trigger signal is got, to described
The output drive signal of breaker protector 10, to drive the breaker protector 10 to disconnect, power-off protection is carried out to electrical equipment.
It is more safe and reliable to device powers down in order to ensure in technical scheme disclosed in the above embodiments of the present application,
The breaker protector 10 can be electromagnetism guard relay, and now, the breaker protector drive circuit 70 keeps for electromagnetism
Relay drive circuit, the electric drive circuit of magnetic latching relay is used for defeated when getting the arc-detection microprocessor 30
After the trigger signal gone out, the electromagnetism guard relay is driven to perform trip action, so as to obtain between electrical equipment and power supply
Physics is powered off, and improves the reliability of power-off, effectively reduces user and the possibility of error shock occurs when repairing electrical equipment.
In scheme disclosed in the above embodiments of the present application, referring to Fig. 2, it is also configured with being used to power 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 that exports the Switching Power Supply 91.
Electrical equipment in the course of the work, if equipment be chronically at leakage condition, it is 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 be carried 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 each above-mentioned circuit can be detected by the current sampling circuit 20 is to electricity consumption
Equipment carries out dependent failure judgement, when determining electrical equipment and being in malfunction, control 10 pairs of the breaker protector with
Electric equipment carries out power-off protection, wherein, it is above-mentioned electric-leakage detection circuit 80, over-current detection circuit 81, over-voltage detection circuit 82, under-voltage
, can be directly to the open circuit protection when detection circuit 83 and short-circuit detecting circuit 84 determine electrical equipment in malfunction
Device 10 exports the control signal for controlling it to disconnect, naturally it is also possible to controlled by the breaker protector drive circuit 70
The breaker protector 10 disconnects, certainly, and it can also send the control signal into the arc-detection microprocessor 30,
30 pairs of the breaker protector electrical equipment is controlled to perform power-off protection by the arc-detection microprocessor 30, now,
The arc-detection microprocessor 30 is configured as, and either the electricity is got when detecting electrical equipment failure electric arc
Detect that circuit 80, over-current detection circuit 81, over-voltage detection circuit 82, undervoltage detection circuit 83 and/or short-circuit detecting circuit 84 are defeated
After the control signal gone out, the breaker protector 10 is controlled to set electricity consumption directly or by the breaker protector drive circuit 70
It is standby to carry out 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
It can be communicated, i.e. in such scheme, can also be wrapped by wireless network between 70 and the arc-detection microprocessor 30
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；
In the second wireless communication module W2 being connected with the breaker protector drive circuit 70, wherein Fig. 4, described
One wireless communication module W1 is at least interior in the wireless communication module that the electrical equipment is carried, second wireless communication module
Wireless signal receiver is equipped with, the wireless signal receiver is defeated for obtaining the radio signal senders by wireless network
The control signal for being used to be controlled the working condition of breaker protector 10 gone out.Wherein, when the electrical equipment is can be with
When carrying out the smart machine of remote control, the channel radio that the first wireless communication module W1 can carry for the electrical equipment
Believe module.
Referring to Fig. 5-Fig. 8, in technical scheme disclosed in the above embodiments of the present application, 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 it can be placed 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 is necessary to illustrate, when breaker protector driving
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, it can be set in the electrical equipment protection device for arc faults
There is a default functional module in multiple current detection circuits, each current detection circuit correspondence detection electrical equipment
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 set multiple electrical equipment protection device for arc faults with to each in electrical equipment
Functional module carry 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-detection microprocessor 30 is additionally operable to：Calculate by current sampling circuit 20 sample obtain normal current it is humorous
Wave characteristic vector and the harmonic characteristic vector of pre-stored all functional modules are compared, and determine the minimum function mould of the difference of two squares
Block, transfer the judgment rule that matches with the functional module as the functional module whether break down electric arc judgement according to
According to.
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, work as the arc-detection microprocessor 30 for obtaining
Detect electrical equipment and the fault-signal exported during arc fault occur, when getting the fault-signal, according to default ground
Location is to user terminal output equipment fault alarm signal, and the user terminal can be the equipment such as mobile phone, PC.
Above-mentioned electrical equipment protection device for arc faults can be used as fire alarm with wireless access cell fire alarm certre
Use, specifically, when controlling the breaker protector 10 to carry out open circuit protection to electrical equipment, to the cell fire protection warning
Center exports a cue.
It can be detected simultaneously in above-mentioned electrical equipment protection device for arc faults with built-in smog or gas detection sensor
To occur arc burning when smog or gas when, outputting alarm signal.
It is understood that in a upper scheme, the arc-detection microprocessor 30 is additionally operable to, and is set when detecting electricity consumption
It is standby to occur generating during arc fault and export fault-signal to the webserver, wherein, the fault-signal can include：Equipment
Type information, device address information, break down functional module type information, the webserver is getting
State after fault-signal, the fault-signal is parsed, obtain above-mentioned parameters information, then obtained in 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 broken down,
And the type information of failure, the fault type also refers to, equipment failure 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, it is disclosed herein as well is a kind of control of electrical equipment
Can be applied in system, 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.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, 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 new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (12)
1. a kind of electrical equipment protection device for arc faults, it is characterised in that including：
It is arranged at the breaker protector in the supply line of electrical equipment；
The current detection circuit detected for the operating current to electrical equipment；
The arc-detection microprocessor that input is connected with the output end of the current detection circuit, the arc-detection microprocessor
The output end of device 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 and analog-to-digital conversion being arranged between the current detection circuit and the arc-detection microprocessor
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：
It is arranged on the open circuit protection between the output end of the arc-detection microprocessor and the control end of the breaker protector
Device 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 signal exported according to the arc-detection microprocessor, drives the electromagnetism guard relay
Thread 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
What radio signal senders described in line Network Capture were exported believes for the control that the working condition to breaker protector is controlled
Number.
8. electrical equipment protection device for arc faults according to claim 7, it is characterised in that the wireless signal is sent
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 to be multiple, the work of a default functional module in each current detection circuit correspondence detection electrical equipment
Electric current.
10. electrical equipment protection device for arc faults according to claim 1, it is characterised in that also include：
The webserver, is generated for obtaining when the arc-detection microprocessor is detected when arc fault occurs in electrical equipment
Fault-signal, according to preset address to user terminal output equipment fault alarm signal.
11. a kind of electrical equipment control system, applied in electrical equipment, it is characterised in that including：
Electrical equipment protection device for arc faults described in claim 1-10 any one.
12. electrical equipment control system 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 |
|---|---|---|---|
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| CN110596554A (en) * | 2019-10-11 | 2019-12-20 | 珠海格力电器股份有限公司 | Fault arc detection method and device, storage medium and socket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110596554A (en) * | 2019-10-11 | 2019-12-20 | 珠海格力电器股份有限公司 | Fault arc detection method and device, storage medium and socket |
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