CN102611069A - Electric arc fault protector - Google Patents
Electric arc fault protector Download PDFInfo
- Publication number
- CN102611069A CN102611069A CN2012101144769A CN201210114476A CN102611069A CN 102611069 A CN102611069 A CN 102611069A CN 2012101144769 A CN2012101144769 A CN 2012101144769A CN 201210114476 A CN201210114476 A CN 201210114476A CN 102611069 A CN102611069 A CN 102611069A
- Authority
- CN
- China
- Prior art keywords
- unit
- circuit
- electric arc
- arc fault
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses an electric arc fault protector capable of protecting electric arc faults, comprising a signal collecting unit, a microprocessor unit, a tripper unit and a power supply circuit unit. The electric arc fault protector disclosed by the invention is operated by the following steps of: collecting current signals of a household electric circuit through a current transformer; processing the collected current signals by a signal regulating circuit; transmitting the collected current signals to the microprocessor unit to be analyzed; judging whether the present current matches the characteristics of current when an electric arc fault happens or not; and if yes, judging that the electric arc fault happens and giving out a fault signal to drive a tripper to immediately disconnect the circuit. The electric arc fault protector disclosed by the invention has very important significance for protection of a fire disaster caused by electric arc.
Description
Technical field
The present invention relates to a kind of electronics, electric equipment safety guard, especially a kind of electric arc fault protection device.
Background technology
Along with the raising of rapid development of economy and people's lives, power consumption is also in continuous increase.Electrical Safety comprises personal safety and the fire that prevents to leak electricity or arc fault causes, receives people's attention day by day.The fire that arc fault causes accounts for more than 60% in all electrical fires, so people improve the attention degree of low-voltage electrical safety and electric arc fault protection gradually.
Electric arc is the continuous discharge phenomenon of crossing over certain dielectric between two electrodes, often is accompanied by the part volatilization of electrode.Typical electric arc is to form in the airspace between yin, yang the two poles of the earth.Arc center's temperature is generally 5000 to 15000 degrees centigrade.The zone that electric arc exists can produce very high ionization air pressure, and what cause that electric arc limited to all can discharge hot gas and electrode substance particle Anywhere.
Electric arc on the circuit can be divided into two kinds, and a kind of is normal operation arc, claims that " good arc " another kind is a fault electric arc, claims " bad arc "." good arc " is meant the arc that motor rotation (like electric drill, dust catcher etc.) produces, and in addition when people's device for switching, the arc that produces during plug electrical equipment also belongs to " good arc "." bad arc " is fault electric arc, and fault electric arc generally results from two kinds of situation: 1. along insulator part conductive surface; 2. result from two very approaching electrodes.The former causes the insulating surface carbonization and forms arc channel because insulator is heated for a long time or the contingency electric spark takes place; The latter is because electric conductor is run into ground conduit, or part is hurt insulation by sharp-pointed metallic object in a branch of conductor.In the low pressure power and distribution supply cable, series arc faults, Line To Line arc fault and line arc fault is over the ground arranged.
Traditional domestic circuit failure protecting device can seriously transship at electric wiring; Thereby open circuit plays a protective role when perhaps being short-circuited; Though but the electric current when arc fault takes place exists than high peak usually; But effective value maybe be also little, so traditional domestic circuit failure protecting device all can't provide comprehensive protection to arc fault.
Summary of the invention
The technical problem that the present invention will solve provides a kind of electric arc fault protection device that can play a protective role to arc fault.
For addressing the above problem, a kind of electric arc fault protection device of the present invention comprises: signal gathering unit, microprocessor unit, release unit and power circuit unit;
Signal gathering unit is used for gathering the current signal of electric circuit;
Microprocessor unit links to each other with signal gathering unit, is used to receive the signal that signal gathering unit collects, and judges whether there is fault electric arc in the circuit, and according to judged result control release open circuit whether; Said microprocessor unit has the arc fault detection module;
The release unit links to each other with microprocessor, is used for open circuit when arc fault takes place electric circuit, thereby plays the effect of protective circuit.
The power circuit unit is used to signal gathering unit, microprocessor unit and release unit power supply is provided.
Said signal gathering unit comprises current transformer and signal conditioning circuit; This signal conditioning circuit links to each other with microprocessor unit, be used for to the current signal that current transformer collects amplify, filtering.
Said microprocessor unit has the A/D modular converter, and the current signal that is used for current transformer is collected carries out analog-to-digital conversion.
Said release unit comprise release and be arranged on release and microprocessor unit between the release drive circuit.
Said electric arc fault protection device also comprises test circuit; This test circuit links to each other with power circuit unit and microprocessor unit; Can drive the release open circuit to the microprocessor unit input test signal, be used to judge whether the electric arc fault protection device is in proper working order.
Described power circuit unit comprises Switching Power Supply and voltage transitions chip; Wherein Switching Power Supply links to each other with test circuit with signal conditioning circuit; The voltage transitions chip links to each other with Switching Power Supply and microprocessor unit.
Adopt the electric arc fault protection device of structure of the present invention; Gather the current signal in family's electric wiring through current transformer, send in the microprocessor unit after handling through signal conditioning circuit and analyze, the characteristic of the electric current when whether meeting the generation arc fault through analyzing the electric current of judging at that time; If; Then be judged as arc fault has taken place, and provide fault-signal, drive the timely open circuit of release.Electric arc fault protection device of the present invention for taking precautions against the fire that electric arc causes, is that crucial meaning is arranged.
Description of drawings
Fig. 1 is the structured flowchart of electric arc fault protection device of the present invention.
Embodiment
In order to make those skilled in the art person understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and execution mode.
As shown in Figure 1, electric arc fault protection device of the present invention comprises current transformer, signal conditioning circuit, microprocessor unit, release drive circuit, release, test circuit and power circuit unit.
Wherein, current transformer is used for gathering the current signal of electric circuit.
Signal conditioning circuit links to each other with current transformer, be used for to the current signal that current transformer collects amplify, filtering.
Microprocessor unit links to each other with signal conditioning circuit; Said microprocessor unit has the arc fault detection module; Be used to receive the signal that signal gathering unit collects, judge whether there is fault electric arc in the circuit, and according to judged result control release open circuit whether; Said microprocessor unit also has the A/D modular converter, and the current signal that is used for current transformer is collected carries out analog-to-digital conversion.
The release drive circuit links to each other with microprocessor unit and release, is used for driving the release open circuit according to the arcing fault signal of microprocessor unit input.
Test circuit links to each other with power circuit unit and microprocessor unit; Can be to the microprocessor unit input test signal; After microprocessor unit receives test signal; To release drive circuit input arcing fault signal, drive the release open circuit, be used to judge whether the electric arc fault protection device is in proper working order.
Described power circuit unit comprises Switching Power Supply and voltage transitions chip, and wherein Switching Power Supply converts the 220V alternating current into positive and negative 5V power supply, is signal conditioning circuit and test circuit power supply; The voltage transitions chip converts the 5V that exports in the Switching Power Supply into the 3.3V power supply, is microprocessor power supply.
Claims (6)
1. an electric arc fault protection device is characterized in that: comprising: signal gathering unit, microprocessor unit, release unit and power circuit unit;
Signal gathering unit is used for gathering the current signal of electric circuit;
Microprocessor unit links to each other with signal gathering unit, is used to receive the signal that signal gathering unit collects, and judges whether there is fault electric arc in the circuit, and according to judged result control release open circuit whether; Said microprocessor unit has the arc fault detection module;
The release unit links to each other with microprocessor, is used for open circuit when arc fault takes place electric circuit, thereby plays the effect of protective circuit;
The power circuit unit is used to signal gathering unit, microprocessor unit and release unit power supply is provided.
2. electric arc fault protection device according to claim 1, it is characterized in that: said signal gathering unit comprises current transformer and signal conditioning circuit; This signal conditioning circuit links to each other with microprocessor unit, be used for to the current signal that current transformer collects amplify, filtering.
3. like the said electric arc fault protection device of claim 2, it is characterized in that: said microprocessor unit has the A/D modular converter, and the current signal that is used for current transformer is collected carries out analog-to-digital conversion.
4. like the said electric arc fault protection device of claim 3, it is characterized in that: said release unit comprise release and be arranged on release and microprocessor unit between the release drive circuit.
5. like the said electric arc fault protection device of claim 4; It is characterized in that: said electric arc fault protection device also comprises test circuit; This test circuit links to each other with power circuit unit and microprocessor unit; Can drive the release open circuit to the microprocessor unit input test signal, be used to judge whether the electric arc fault protection device is in proper working order.
6. like the said electric arc fault protection device of claim 5, it is characterized in that: described power circuit unit comprises Switching Power Supply and voltage transitions chip; Wherein Switching Power Supply links to each other with test circuit with signal conditioning circuit; The voltage transitions chip links to each other with Switching Power Supply and microprocessor unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101144769A CN102611069A (en) | 2012-04-18 | 2012-04-18 | Electric arc fault protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101144769A CN102611069A (en) | 2012-04-18 | 2012-04-18 | Electric arc fault protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102611069A true CN102611069A (en) | 2012-07-25 |
Family
ID=46528294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101144769A Pending CN102611069A (en) | 2012-04-18 | 2012-04-18 | Electric arc fault protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102611069A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998573A (en) * | 2012-12-27 | 2013-03-27 | 天津市鸿远电气设备有限公司 | Electric arc fault protector inspection device |
| CN103560477A (en) * | 2013-11-06 | 2014-02-05 | 福州大学 | Power supply line arc fault protector embedded into electrical equipment |
| CN104135431A (en) * | 2014-08-21 | 2014-11-05 | 上海欧忆智能网络有限公司 | Energy gateway with fault arc detection function |
| CN106199293A (en) * | 2016-08-31 | 2016-12-07 | 天津市鸿远电气股份有限公司 | Distribution box arc light detecting device |
| CN106208027A (en) * | 2016-08-31 | 2016-12-07 | 天津市鸿远电气股份有限公司 | Fault electric arc detector |
| CN108879588A (en) * | 2018-08-31 | 2018-11-23 | 国网浙江温岭市供电有限公司 | A kind of new pattern creepage and arc fault comprehensive protector |
| CN108963962A (en) * | 2018-08-10 | 2018-12-07 | 中航建设集团成套装备股份有限公司 | A kind of multi-layer arc fault open-circuit system |
| CN112213596A (en) * | 2020-10-15 | 2021-01-12 | 珠海格力电器股份有限公司 | Simulated fault arc generation device, system, detection method and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5459630A (en) * | 1993-09-15 | 1995-10-17 | Eaton Corporation | Self testing circuit breaker ground fault and sputtering arc trip unit |
| CN1601842A (en) * | 2004-09-30 | 2005-03-30 | 宁波习羽电子发展有限公司 | Arc and leakage protector |
| CN201149985Y (en) * | 2008-01-23 | 2008-11-12 | 黄武杰 | Multi-function circuit protector |
| CN202524053U (en) * | 2012-04-18 | 2012-11-07 | 天津市鸿远电气设备有限公司 | Electric arc failure protector |
-
2012
- 2012-04-18 CN CN2012101144769A patent/CN102611069A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5459630A (en) * | 1993-09-15 | 1995-10-17 | Eaton Corporation | Self testing circuit breaker ground fault and sputtering arc trip unit |
| CN1601842A (en) * | 2004-09-30 | 2005-03-30 | 宁波习羽电子发展有限公司 | Arc and leakage protector |
| CN201149985Y (en) * | 2008-01-23 | 2008-11-12 | 黄武杰 | Multi-function circuit protector |
| CN202524053U (en) * | 2012-04-18 | 2012-11-07 | 天津市鸿远电气设备有限公司 | Electric arc failure protector |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998573A (en) * | 2012-12-27 | 2013-03-27 | 天津市鸿远电气设备有限公司 | Electric arc fault protector inspection device |
| CN102998573B (en) * | 2012-12-27 | 2016-05-04 | 天津市鸿远电气设备有限公司 | Electric arc fault protection device verifying attachment |
| CN103560477A (en) * | 2013-11-06 | 2014-02-05 | 福州大学 | Power supply line arc fault protector embedded into electrical equipment |
| CN104135431A (en) * | 2014-08-21 | 2014-11-05 | 上海欧忆智能网络有限公司 | Energy gateway with fault arc detection function |
| CN106199293A (en) * | 2016-08-31 | 2016-12-07 | 天津市鸿远电气股份有限公司 | Distribution box arc light detecting device |
| CN106208027A (en) * | 2016-08-31 | 2016-12-07 | 天津市鸿远电气股份有限公司 | Fault electric arc detector |
| CN108963962A (en) * | 2018-08-10 | 2018-12-07 | 中航建设集团成套装备股份有限公司 | A kind of multi-layer arc fault open-circuit system |
| CN108879588A (en) * | 2018-08-31 | 2018-11-23 | 国网浙江温岭市供电有限公司 | A kind of new pattern creepage and arc fault comprehensive protector |
| CN112213596A (en) * | 2020-10-15 | 2021-01-12 | 珠海格力电器股份有限公司 | Simulated fault arc generation device, system, detection method and storage medium |
| CN112213596B (en) * | 2020-10-15 | 2022-01-18 | 珠海格力电器股份有限公司 | Simulated fault arc generation device, system, detection method and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102611069A (en) | Electric arc fault protector | |
| CN105510778B (en) | A kind of arrester monitors terminal installation on-line | |
| CN202524053U (en) | Electric arc failure protector | |
| CN204046153U (en) | The circuit breaker that tape jam arc protection function is reported to the police | |
| CN204030567U (en) | For the protection device for arc faults of three-phase circuit | |
| CN204423575U (en) | A kind of electrical fire comprehensive protector | |
| CN106356807A (en) | Safety plug protection circuit device | |
| CN203871688U (en) | Arc-extinguishing resonance-eliminating cabinet | |
| CN201345457Y (en) | Plug used for air conditioner and provided with function of fault electric arc protection | |
| CN204597453U (en) | Electric prospection switch | |
| CN207283052U (en) | A kind of 110kV and above counter of lightning arrester live replacing device | |
| CN202014076U (en) | Protection device for arc faults | |
| CN203287462U (en) | Electric leakage lockout detection circuit | |
| CN104465051A (en) | Grounding system for transformer neutral point resistance type direct current suppression device | |
| CN2753010Y (en) | Power socket with overcurrent and short circuit protective device | |
| CN209119804U (en) | Electric furnace overvoltage energy absorption protective device | |
| CN104242263A (en) | Breaker with fault arc protecting and alarming functions | |
| CN207910447U (en) | A kind of active protection device for arc faults of switchgear | |
| CN208433749U (en) | A kind of transformer neutral point direct current decoupling device | |
| CN203536953U (en) | Lightning arrester deterioration protective device | |
| CN202601858U (en) | Lightning-proof gap type grounding device | |
| CN203025274U (en) | Arc fault protector detection device | |
| CN102280234A (en) | Arrester with series gaps capable of measuring leakage currents of valve block | |
| CN206657957U (en) | Integrated self arc Multiple level arrester | |
| CN205211688U (en) | Dedicated electrified arc protect function's of air conditioner circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 300000, Tianjin, Jinnan District, eight Li Tai Taida (Jinnan) Microelectronics Industrial Zone, Keda Road, No. 9-1012 Applicant after: TIANJIN HONGYUAN ELECTRIC CO., LTD. Address before: 300350, Tianjin, Jinnan District, eight Li Tai Taida (Jinnan) Microelectronics Industrial Zone, Keda Road, No. 9-1012 Applicant before: Tianjin Hongyuan Electrical Equipment Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: TIANJIN HONGYUAN ELECTRICAL EQUIPMENT CO., LTD. TO: TIANJING HONGYUAN ELECTRIC CORP., LTD. |
|
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |