CN106549366A - Electrical Safety detection protection circuit, switchgear or socket - Google Patents
Electrical Safety detection protection circuit, switchgear or socket Download PDFInfo
- Publication number
- CN106549366A CN106549366A CN201510600828.5A CN201510600828A CN106549366A CN 106549366 A CN106549366 A CN 106549366A CN 201510600828 A CN201510600828 A CN 201510600828A CN 106549366 A CN106549366 A CN 106549366A
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- signal
- current
- protection circuit
- operational amplifier
- residual current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/14—Protecting elements, switches, relays or circuit breakers
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- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of Electrical Safety detection protection circuit, switchgear and socket, protection circuit are connected in the supply line with electric loading, including：Current sensor, gathers the current signal in the supply line；Voltage sensor, gathers the voltage signal in the supply line；Residual current sensor, gathers the residual current signal in the supply line；Signal processing circuit, receives the current signal, voltage signal and residual current signal and carries out pretreatment；Controller is connected with the signal processing circuit, judges whether the pretreated current signal, voltage signal and residual current signal exceed corresponding threshold value, if then control sends alarm and/or cut-out electricity consumption load supplying.The protection circuit utilizes detection sensor, constitutes an electrical monitoring system, and while the convenience of smart home is ensured, the state of monitor in real time load builds safe house system.
Description
Technical field
The present invention relates to smart home field, more particularly to a kind of Electrical Safety detection protection circuit, switch
Equipment or socket.
Background technology
Common socket：There is the insertable seat of one or more circuit connections, can be inserted into by it various
Wiring, is easy to and other circuit ONs.By the connection between circuit and copper piece and disconnection, reach final
Reach the connecting and disconnecting of the partial circuit.With the economic raising developed rapidly with people's lives, electricity consumption
Also being continuously increased, new electrical equipment, smart machine are also ceaselessly emerging in large numbers amount；And traditional socket is only
It is that a kind of convenient physical device is patched to electric wire, lacks defencive function.Especially to causing electrical fire
Electric leakage and electric arc lack protection mechanism and implementation method.
PDU sockets：PDU (Power Distribution Unit) is that PDU possesses power distribution and management work(
The power distribution manager of energy.The equipment connected by PDU sockets is generally placed upon machine room, such as senior
The equipment such as computer, server, therefore there is lightning protection function, master control switch, overload protection, current/voltage
The functions such as display, remote monitoring function, cigarette temperature-sensitive humidity on-line checking.But, also lack to electric leakage, electricity
The protection of arc and implementation method.
With regard to the generation of electric arc, socket loosens the sparking for causing and belongs to serial arc；Fire caused by circuit is damaged
The electric arc for causing of striking sparks between line and zero line is parallel arc.
In prior art, the series connection that can effectively solve the problem that using current transformer by the electric current on detection circuit
The problem of electric arc, and the detection method is detection method general in industry；But it is difficult to solve electricity in parallel
The problem of arc, because the electric current very little that parallel arc sparking is produced, energy is high, only by detecting that electric current cannot
Identification accurate to parallel arc or discrimination be not high.
The content of the invention
Present invention aim at providing a kind of Electrical Safety detects protection circuit, it is intended to during solving electricity consumption
The problem of electric arc and electric leakage is produced when switch or socket loosen or circuit is damaged.
The invention provides a kind of Electrical Safety detects protection circuit, it is connected in the supply line with electric loading,
Including：
Current sensor, gathers in the supply line to analyze the current signal of serial arc；
Voltage sensor, gathers in the supply line to analyze the voltage signal of parallel arc；
Residual current sensor, gathers in the supply line to analyze the residual current signal of leakage current；
Signal processing circuit, is connected with the current sensor, voltage sensor and residual current sensor,
Receive the current signal, voltage signal and residual current signal and carry out pretreatment；
Controller, is connected with the signal processing circuit, receives the pretreated current signal, voltage
Signal and residual current signal, judge the pretreated current signal, voltage signal and residue electricity
Whether stream signal exceedes corresponding threshold value, if then control sends alarm and/or cut-out electricity consumption load supplying.
Present invention also offers a kind of switchgear, is provided with above-mentioned Electrical Safety detection protection circuit.
Present invention also offers a kind of socket, is provided with above-mentioned Electrical Safety detection protection circuit.
The above-mentioned switch or socket that are provided with Electrical Safety detection protection circuit arranges current/voltage detection sensing
Device, constitutes an electrical monitoring system, while the convenience of smart home is ensured, monitor in real time load
Or with the state of electric line, build safe house system.Simultaneously by electric leakage, electric arc, power consumption state letter
Breath, does total system monitoring in real time, understands each load or with the situation of electric line, using integration algorithm and greatly
Data analysiss mode, carries out state ageing predetermination and analysis to unit electrical equipment, is given warning in advance, real
The security monitoring of existing equipment and energy-conservation.
Description of the drawings
Fig. 1 is the circuit module figure of Electrical Safety detection protection circuit in present pre-ferred embodiments；
Fig. 2 is the circuit theory diagrams of Electrical Safety detection protection circuit in present pre-ferred embodiments.
Specific embodiment
In order that the technical problem to be solved in the present invention, technical scheme and beneficial effect become more apparent, with
Lower combination drawings and Examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific embodiment only to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, Electrical Safety in present pre-ferred embodiments detection protection circuit, be connected to
In electric loading or supply line, such as it is arranged on electric switch, with electrical socket, hybrid relay, intelligent conversion
In relay, light-adjusting module, lighting control module or bus power source module.Electrical Safety detects protection circuit,
Including current sensor 110, voltage sensor 120, residual current sensor 130, signal processing circuit 140
And controller 150.
The electric current to analyze serial arc that current sensor 110 is used to gather in the supply line is believed
Number；Voltage sensor 120 is used to gather in the supply line to analyze the voltage signal of parallel arc；
Residual current sensor 130 believe to the residual current for analyzing leakage current in the supply line for being gathered
Number；Signal processing circuit 140 is passed with the current sensor 110, voltage sensor 120 and residual current
Sensor 130 connects, and receives the current signal, voltage signal and residual current signal and carries out pretreatment；
Controller 150 is connected with the signal processing circuit 140, receives the pretreated current signal, electricity
Pressure signal and residual current signal, judge the pretreated current signal, voltage signal and residue
Whether current signal exceedes corresponding threshold value, if then control sends alarm and/or cut-out electricity consumption load supplying.
Or the pretreated current signal, voltage signal and residual current signal and predetermined threshold value are compared
Comparative result is obtained, alarm and/or cut-out electricity consumption load supplying are sent according to comparative result control.
The controller 150 is the analysis for current leakage module 151 set in single-chip microcomputer, controller 150, by right
The analysis of the residual current information for collecting, according to electric leakage and predetermined threshold value contrast is obtained, more than predetermined threshold value
Qualification result one is recorded as then.Thereafter controller 150 sends execution according to the result one and sends alarm and/or cut
The instruction of disconnected electricity consumption load supplying.
Specifically, the analysis for current leakage module 151 of the controller 150 sets up corresponding with normal residual current
Initial curve, in normal state, sets up the initial song of the normal electrical leakage (residual current) of load automatically
Line.Wherein, the residual current signal includes at least residual current persistent period and/or residual current electricity.
By current residual electric current and the corresponding initial curve is fitted to, judges whether current residual electric current exceedes pre-
If threshold value, if then control sends alarm and/or cut-out electricity consumption load supplying.By determining error level, really
The electric leakage rank of fixed load or electric wire, often reaching a rank carries out different grades of early warning.
In the present embodiment, when the residual current for detecting more than the first predetermined threshold value (such as initial residual current
More than 30%～50%) when, then send alarm；When the residual current for detecting is more than the second predetermined threshold value (such as
Initial residual current more than 65%～80%) when, then control sends alarm the power supply of cut-out electric loading.
Controller 150 is also interior to set fault electric arc analysis module 152, and the fault electric arc analysis module 152 passes through
The analysis of the current information to collecting, judges it is that fault electric arc is then recorded as qualification result according to national standard
Two, it is due to the mainly electric current that serial arc affects, smaller to voltage influence, therefore the electric current judges main
It is the judgement for tackling series circuit.The fault electric arc analysis module 152 is by the information of voltage to collecting
Analysis, judges it is that fault electric arc is then recorded as qualification result three according to national standard；Due to parallel arc it is main
It is to affect local voltage, electric arc can affect the voltage curve of local, therefore voltage mainly to judge simultaneously when occurring
Connection electric arc.Thereafter controller 150 according to the result two, 3 send execution send alarm and/or cut-out electricity consumption bear
Carry the instruction of power supply.
Specifically, fault electric arc analysis module 152 judges whether current current signal and voltage signal exceed
Corresponding predetermined threshold value；Specifically refer to current signal and serial arc and parallel arc included in voltage signal
Relevant parameter (electric arc occur durations and electric arc amplitude) whether exceed predetermined threshold value.It is default with regard to this
Threshold value, national standard think that electric arc continues 13 more than the cycle, and the amplitude of electric arc is reached with load current
10%, it is that deleterious current needs and alarm.Faint arc current and short-period arc current are considered one
Plant accidental, can not report to the police.But electric arc has very strong hazardness, there is electric arc and can ignite the easy of surrounding
Combustion things, thus strengthen electric arc analysis have a very big significance.
If exceeding, it is judged to fault electric arc, control sends alarm and cuts off electricity consumption load supplying；If not surpassing
Cross, then current current signal and voltage signal are carried out carrying out with electric arc generation durations and electric arc amplitude
Classification statistical analysiss, i.e., for not meeting fault electric arc standard, but may be further development of failure
The information of electric arc is equally preserved, and is analyzed.
When electric arc tendency information is when progressively deteriorating, then early warning is carried out.150 pairs of electricity for receiving of controller first
Arc carries out being classified with cycle length, is fitted after classification, finds trend.For a statistical analysiss,
When electric arc trend is progressively deteriorating, for example：3 cycle electric arcs to 5 cycle arc transfers, by occupation proportion
Lifted, then carrying out early warning, pointing out the position of intelligent node and possible failure.I.e. described electric arc trend letter
Breath includes in the state for progressively deteriorating：Electric arc width of the generation durations of electric arc in persistently increase and/or electric arc
Value is persistently increasing.
Current signal, voltage signal and residual current signal described in signal processing circuit 140 simultaneously carry out pretreatment
Amplify and analog digital conversion including signal filtering, signal.With reference to Fig. 2, the signal processing circuit 140 includes
First operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 and AD conversion core
Piece U4.
The first operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 it is negative
Input is respectively by the first electric capacity C1 and the current sensor 110, voltage sensor 120, remaining electricity
Flow sensor 130 connects；The first operational amplifier U1, the second operational amplifier U2, the 3rd computing
The positive input terminal of amplifier U3 connects reference voltage V ref respectively, and is grounded by the second electric capacity C2, and described the
One operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 outfan respectively with
The input connection of AD conversion chip U4, the output of AD conversion chip U4 terminate the control
Device processed 150.
Voltage signal, current signal and residual current signal, through respectively through the first operational amplifier U1,
Second operational amplifier U2, the 3rd operational amplifier U3 amplify filtering to signal, are sent to AD conversion chip
U4 carries out analog/digital conversion, the data after conversion, and the communication modes of Jing serial SPI are sent to controller 150
Inside is for analysis.
In other embodiments, controller 150 receives the pretreated current signal, voltage signal
After residual current signal, by the pretreated current signal, voltage signal and residual current signal with
Predetermined threshold value is compared and obtains comparative result.The comparative result is uploaded to into intelligent appliance control centre (such as
Presence server or Cloud Server), intelligent appliance control centre sends execution alarm according to the comparative result
And/or cut power supply action instruction to the controller 150, controller 150 performs corresponding actions.
Those skilled in the art can be understood that, for convenience of description and succinctly, only more than
The division for stating each functional unit of controller is illustrated, in practical application, can as desired by
Above-mentioned functions distribution is completed by different functional units, will the internal structure of the controller be divided into difference
Functional unit or module, to complete all or part of function described above.Each function in embodiment
During unit is integrated in a processing unit, or unit is individually physically present, it is also possible to two or
Two or more unit is integrated in a unit, and above-mentioned integrated unit both can be realized in the form of hardware,
Can also be realized in the form of SFU software functional unit.In addition, the specific name of each functional unit is also simply
It is easy to mutually differentiation, is not limited to the protection domain of the application.The concrete work of unit in said apparatus
Make process, may be referred to the corresponding process in preceding method embodiment, will not be described here.
In sum, the switch or socket for being provided with Electrical Safety detection protection circuit arranges current/voltage detection
Sensor, constitutes an electrical monitoring system, while the convenience of smart home is ensured, monitor in real time
Load or with the state of electric line, build safe house system.Pass through electric leakage, electric arc, power consumption shape simultaneously
State information, does total system monitoring in real time, understands each load or with the situation of electric line, using integration algorithm
With big data analysis mode, state ageing predetermination and analysis are carried out to unit electrical equipment, are given warning in advance,
Realize security monitoring and the energy-conservation of equipment.
If the integrated controller unit is realized and as independent product using in the form of SFU software functional unit
When sale or use, can be stored in a computer read/write memory medium.Based on such understanding,
Part or the technology that the technical scheme of the embodiment of the present invention is substantially contributed to prior art in other words
The all or part of scheme can be embodied in the form of software product, and the computer software product is stored in
In one storage medium, use including some instructions so that computer equipment (can be personal computer,
Server, or the network equipment etc.) or processor (processor) perform the embodiment of the present invention each enforcement
The all or part of step of example methods described.And aforesaid storage medium includes：USB flash disk, portable hard drive, only
Read memorizer (ROM, Read-Only Memory), random access memory (RAM, Random Access
Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
Embodiment described above only to illustrate technical scheme, rather than a limitation；Although reference
Previous embodiment has been described in detail to the present invention, it will be understood by those within the art that：Its
Still the technical scheme described in foregoing embodiments can be modified, or it is special to which part technology
Levying carries out equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from this
The spirit and scope of each embodiment technical scheme of bright embodiment.
Claims (10)
1. a kind of Electrical Safety detects protection circuit, is connected in the supply line with electric loading, and its feature exists
In, including：
Current sensor, gathers in the supply line to analyze the current signal of serial arc；
Voltage sensor, gathers in the supply line to analyze the voltage signal of parallel arc；
Residual current sensor, gathers in the supply line to analyze the residual current signal of leakage current；
Signal processing circuit, is connected with the current sensor, voltage sensor and residual current sensor,
Receive the current signal, voltage signal and residual current signal and carry out pretreatment；
Controller, is connected with the signal processing circuit, receives the pretreated current signal, voltage
Signal and residual current signal, judge the pretreated current signal, voltage signal and residue electricity
Whether stream signal exceedes corresponding threshold value, if then control sends alarm and/or cut-out electricity consumption load supplying.
2. Electrical Safety as claimed in claim 1 detects protection circuit, it is characterised in that the controller
Including analysis for current leakage module, the analysis for current leakage template sets up initial curve corresponding with normal residual current,
By current residual electric current and the corresponding initial curve is fitted to, judges whether current residual electric current exceedes pre-
If threshold value, if then control sends alarm and/or cut-out electricity consumption load supplying, wherein, the residual current letter
Number include at least residual current persistent period and/or residual current electricity.
3. Electrical Safety as claimed in claim 2 detects protection circuit, it is characterised in that when what is detected
When residual current is more than the first predetermined threshold value, then alarm is sent；When the residual current for detecting is more than second pre-
If during threshold value, then control sends alarm the power supply of cut-out electric loading.
4. the Electrical Safety as described in any one of claims 1 to 3 detects protection circuit, it is characterised in that
The controller also includes fault electric arc analysis module, and the fault electric arc analysis module judges current electric current
Whether signal and voltage signal exceed corresponding predetermined threshold value；If so, then it is judged to fault electric arc, control sends
Alarm simultaneously cuts off electricity consumption load supplying；If it is not, then carrying out current current signal and voltage signal with electric arc
Generation durations and electric arc amplitude carry out classifying and statistical analysiss, when electric arc tendency information is when progressively deteriorating,
Alarm is sent then.
5. Electrical Safety as claimed in claim 4 detects protection circuit, it is characterised in that the electric arc becomes
Gesture information includes in the state for progressively deteriorating：Electricity of the generation durations of electric arc in persistently increase and/or electric arc
Arc amplitude is persistently increasing.
6. Electrical Safety as claimed in claim 1 detects protection circuit, it is characterised in that at the signal
Reason circuit described in current signal, voltage signal and residual current signal and carry out pretreatment include signal filtering,
Signal amplifies and analog digital conversion.
7. Electrical Safety as claimed in claim 1 detects protection circuit, it is characterised in that at the signal
Reason circuit includes the first operational amplifier, the second operational amplifier, the 3rd operational amplifier and AD conversion core
Piece, wherein：
First operational amplifier, the second operational amplifier, the negative input end difference of the 3rd operational amplifier
It is connected with the current sensor, voltage sensor, residual current sensor by the first electric capacity；Described
One operational amplifier, the second operational amplifier, the positive input terminal of the 3rd operational amplifier connect reference voltage respectively,
And by the second capacity earth, first operational amplifier, the second operational amplifier, the 3rd operation amplifier
The outfan of device is connected with the input of the AD conversion chip respectively, the output of the AD conversion chip
Terminate the controller.
8. Electrical Safety as claimed in claim 1 detects protection circuit, it is characterised in that the controller
For single-chip microcomputer.
9. a kind of switchgear, it is characterised in that the electricity consumption peace being provided with described in any one of claim 1 to 8
Full inspection surveys protection circuit.
10. a kind of socket, it is characterised in that the Electrical Safety being provided with described in any one of claim 1 to 8
Detection protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510600828.5A CN106549366B (en) | 2015-09-18 | 2015-09-18 | Power utilization safety detection protection circuit, switch device or socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510600828.5A CN106549366B (en) | 2015-09-18 | 2015-09-18 | Power utilization safety detection protection circuit, switch device or socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106549366A true CN106549366A (en) | 2017-03-29 |
| CN106549366B CN106549366B (en) | 2020-10-16 |
Family
ID=58362108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510600828.5A Active CN106549366B (en) | 2015-09-18 | 2015-09-18 | Power utilization safety detection protection circuit, switch device or socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106549366B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255767A (en) * | 2017-07-25 | 2017-10-17 | 安徽荣旭信息科技有限公司 | A kind of electrical equipment safety monitoring system in power plant |
| CN110190470A (en) * | 2019-05-23 | 2019-08-30 | 四川电之盾安全技术有限公司 | A kind of intelligent socket and its electric arc preventing control method with arc protection function |
| CN112336983A (en) * | 2019-08-06 | 2021-02-09 | 深圳钮迈科技有限公司 | Safety alarm system for tumor therapeutic apparatus and control method thereof |
| CN113490891A (en) * | 2018-12-27 | 2021-10-08 | 特内有限责任公司 | Method for detecting the initiation of commands given to electrical and electronic devices |
| CN115792703A (en) * | 2022-11-09 | 2023-03-14 | 广东正力通用电气有限公司 | Smart city lighting power supply line electric leakage monitoring platform and monitoring method |
| WO2023159352A1 (en) * | 2022-02-22 | 2023-08-31 | 西门子股份公司 | Circuit breaker, power distribution system and fault analysis method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255767A (en) * | 2017-07-25 | 2017-10-17 | 安徽荣旭信息科技有限公司 | A kind of electrical equipment safety monitoring system in power plant |
| CN113490891A (en) * | 2018-12-27 | 2021-10-08 | 特内有限责任公司 | Method for detecting the initiation of commands given to electrical and electronic devices |
| CN110190470A (en) * | 2019-05-23 | 2019-08-30 | 四川电之盾安全技术有限公司 | A kind of intelligent socket and its electric arc preventing control method with arc protection function |
| CN112336983A (en) * | 2019-08-06 | 2021-02-09 | 深圳钮迈科技有限公司 | Safety alarm system for tumor therapeutic apparatus and control method thereof |
| WO2023159352A1 (en) * | 2022-02-22 | 2023-08-31 | 西门子股份公司 | Circuit breaker, power distribution system and fault analysis method |
| CN115792703A (en) * | 2022-11-09 | 2023-03-14 | 广东正力通用电气有限公司 | Smart city lighting power supply line electric leakage monitoring platform and monitoring method |
| CN115792703B (en) * | 2022-11-09 | 2023-08-22 | 广东正力通用电气有限公司 | Smart city illumination power supply line electric leakage monitoring platform and monitoring method |
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| Publication number | Publication date |
|---|---|
| CN106549366B (en) | 2020-10-16 |
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