CN203966277U - Fault electric arc detection system - Google Patents
Fault electric arc detection system Download PDFInfo
- Publication number
- CN203966277U CN203966277U CN201420407552.XU CN201420407552U CN203966277U CN 203966277 U CN203966277 U CN 203966277U CN 201420407552 U CN201420407552 U CN 201420407552U CN 203966277 U CN203966277 U CN 203966277U
- Authority
- CN
- China
- Prior art keywords
- current transformer
- chip microcomputer
- electric arc
- signal
- fault electric
- 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.)
- Expired - Lifetime
Links
- 238000010891 electric arc Methods 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 abstract description 7
- 208000018634 fetal akinesia deformation sequence Diseases 0.000 abstract description 6
- 208000012165 fetal akinesia deformation sequence syndrome Diseases 0.000 abstract description 6
- 238000002421 fluorescence-activated droplet sorting Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000000116 mitigating effect Effects 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 208000031339 Split cord malformation Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004645 scanning capacitance microscopy Methods 0.000 description 1
- 238000013068 supply chain management Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a kind of fault electric arc detection system, it is characterized in that: this fault electric arc detection system set current transformer and residual current transformer, current transformer is responsible for gathering live wire current signal, the signal of current transformer collection is sent to single-chip microcomputer after low-pass filter and amplifier A, residual current is gathered by residual current transformer, the signal of residual current transformer collection is sent to single-chip microcomputer after amplifier C, another road signal of current transformer collection is sent to single-chip microcomputer after amplifier B, temperature sensor is connected with single-chip microcomputer, single-chip microcomputer is connected with CAN bus communication circuit simultaneously.The FADS of the utility model based on CAN bus surveyed and realized accurate online detection by fault electric arc, and the real-time of system is good.System can operate fire fighting device and put out potential disaster hidden-trouble.FADS based on CAN bus is distributed system, and system adopts the method for designing of distributed intelligence, and each CAN node can communicate with one another, and this design, in the burden while of mitigation system, has met the needs of the accurate report condition of a fire and fire-fighting.
Description
Technical field
The utility model relates to power failure detection field, is specifically a kind of fault electric arc detection system.
Background technology
Fault electric arc is a kind of high temperature discharge phenomenon producing between two pole plates, also can breakdown electrode in electric discharge.The heat that electric arc produces can cause circuit fire.The harm of fault electric arc is very large, but common protective relaying device is difficult to be located.Insulation ag(e)ing and insulation are destroyed is initiating failure electric arc main cause.
Breakdown when electrode, between electrode, can produce discontinuous electric current.Analyzed the current waveform of fault electric arc and other parameters, inquired into the standard UL1699[1 of Underwriters LaboratoriesInc. (UL)] test method introduced.Detection method is mainly by the analysis of the mean value of electric current is obtained.
1: fault electric arc: fault electric arc is the main cause of initiation fire.Insulation ag(e)ing, connection are become flexible and insulated destroyed is initiating failure electric arc main cause.According to Paschen breakdown characteristics, depend primarily on the distance in gas characteristic, air pressure and gap, when insulating gas is air, gap is in 1 mm left and right, and the relational expression between them is
V?=?3
pd?+?1135?(1)
In formula
: Vfor voltage, kV;
pfor air pressure, MPa;
dfor gap, mm.
Visible in air, in the gap of 1 mm level, just likely produce the voltage of 4 kV.Hyperbar and high voltage are the main causes that produces fault electric arc.After electric arc produces, owing to having produced the plasma of conduction, can make voltage drop.As, when breaking circuit frequently, can between two lower electrodes of voltage, produce electric arc.Electric arc is unordered, and its profile is changeable.In alternating circuit, first electric arc can raise voltage in every half period, to reach the voltage of breakdown electrode.During arc discharge, electric current transmits by plasma, and its frequency is in wide frequency range.Visible periodically puncturing is the characteristic of alternating current arc, and wide frequency range is the denominator of alternating current arc and direct-current arc.Fault electric arc is divided into serial arc and electric arc in parallel.Between serial arc and load, connect, insulation breakdown between the conductor of series connection, or oxidation, dirt etc., be all the reason that produces serial arc.Electric arc in parallel occurs between two discontiguous conductors, if can produce electric arc in parallel during apart from tension or contact.Not strong when although electric arc can produce high temperature with light but start to discharge most, if do not controlled, will develop into discharge breakdown and send high temperature.
2: the detection principle of fault electric arc:
Adopt current signal processing technology to judge that with detection failure electric arc be very difficult, its maximum problem is reported by mistake exactly.The load waveform of a lot of normal operations is also similar to arc waveform.As, synchronous motor, direct current generator etc.A lot of switches also can produce the phenomenon of similar electric arc when cut-offfing inductive load, have been called arc or similar arc phenomenon, and real destruction insulation is bad arc.So correct failure judgement electric arc is very important.
Utility model content
The purpose of this utility model is to provide a kind of fault electric arc detection system at this, and the FADS based on CAN bus is surveyed and realized accurate online detection by fault electric arc, and the real-time of system is good.System can operate fire fighting device and put out potential disaster hidden-trouble.FADS based on CAN bus is distributed system, and system adopts the method for designing of distributed intelligence, and each CAN node can communicate with one another, and this design, in the burden while of mitigation system, has met the needs of the accurate report condition of a fire and fire-fighting.
The utility model is to realize like this, construct a kind of fault electric arc detection system, it is characterized in that: this fault electric arc detection system set current transformer and residual current transformer, current transformer is responsible for gathering live wire current signal, the signal of current transformer collection is sent to single-chip microcomputer after low-pass filter and amplifier A, residual current is gathered by residual current transformer, the signal of residual current transformer collection is sent to single-chip microcomputer after amplifier C, another road signal of current transformer collection is sent to single-chip microcomputer after amplifier B, temperature sensor is connected with single-chip microcomputer, single-chip microcomputer is connected with CAN bus communication circuit simultaneously.
The utility model, in order to detect reliably the fault electric arc in low-voltage distribution cabinet, detects arc voltage signal and arc optical signal respectively.Extract primary voltage and the outlet voltage of power distribution cabinet, converting respectively frequency signal to compares, obtain arc voltage signal, and it is sent into together with arc optical signal to 16 super low-power consumption High Performance SCMs of advanced in performance MSP430F1611:TI, do comprehensive analysis and judgement.Final design goes out the online detection of intelligent fault electric arc and acoustooptic alarm system, not only can realize detection, the forecast of low-voltage distribution cabinet electric fault, and supply voltage is shown in real time, can also realize the forewarning function to the electric disaster hidden-trouble of power distribution cabinet.
According to fault electric arc detection system described in the utility model, it is characterized in that: single-chip microcomputer adopts 16 single-chip microcomputers of MSP430F1611.
Detector set the functions such as signals collecting, data analysis, parameter adjustment, control interlock fire-fighting equipment and data transmission.Current transformer is responsible for gathering current signal, and signal is sent to single-chip microcomputer after filtering with after amplifying, and single-chip microcomputer is 16, by A/D conversion and signal analysis, has judged whether that electric arc produces.Amplifier transmits be one to the synchronizing signal of single-chip microcomputer.According to UL1699 regulation, fault electric arc detector should have residual current detecting function, and residual current is gathered by residual current transformer.
The utility model has the advantage of: fault electric arc detector described in the utility model.FADS based on CAN bus has realized accurate online detection by fault electric arc probe algorithm, and the real-time of system is good.System can operate fire fighting device and put out potential disaster hidden-trouble.FADS based on CAN bus is distributed system, and system adopts the method for designing of distributed intelligence, and each CAN node can communicate with one another, and this design, in the burden while of mitigation system, has met the needs of the accurate report condition of a fire and fire-fighting.
Accompanying drawing explanation
Fig. 1 is that the utility model fault electric arc detection system is implemented structural representation
Current transformer 1, residual current transformer 2, low-pass filter 3, amplifier B4, amplifier A5, amplifier C6, temperature sensor 7, single-chip microcomputer 8, CAN bus communication circuit 9.
Embodiment
Below in conjunction with 1 pair of the utility model of accompanying drawing, be elaborated, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of fault electric arc detection system, this fault electric arc detection system set current transformer 1 and residual current transformer 2, current transformer 1 is responsible for gathering live wire current signal, the signal that current transformer 1 gathers is sent to single-chip microcomputer 8 after low-pass filter 3 and amplifier A5, residual current is gathered by residual current transformer 2, the signal that residual current transformer 2 gathers is sent to single-chip microcomputer 8 after amplifier C6, another road signal that current transformer 1 gathers is sent to single-chip microcomputer 8 after amplifier B4, temperature sensor 7 is connected with single-chip microcomputer 8, single-chip microcomputer 8 is connected with CAN bus communication circuit 9 simultaneously.
This fault electric arc detection system set current transformer 1 and residual current transformer 2, current transformer 1 is responsible for gathering live wire current signal, the signal that current transformer 1 gathers is sent to single-chip microcomputer 8 after low-pass filter 3 and amplifier 5, residual current is gathered by residual current transformer 2, the signal that residual current transformer 2 gathers is sent to single-chip microcomputer 8 after amplifier C6, another road signal that current transformer 1 gathers is sent to single-chip microcomputer 8 after amplifier B4, temperature sensor 7 is connected with single-chip microcomputer 8, single-chip microcomputer 8 is connected with CAN bus communication circuit 9 simultaneously.
In order to detect reliably the fault electric arc in low-tension distribution box, respectively arc voltage signal and arc optical signal are detected.The primary voltage and the outlet voltage that extract panel box, convert respectively frequency signal to and compare, and obtains arc voltage signal, and it is sent into together with arc optical signal to advanced in performance employing MSP430F2111 single-chip microcomputer, does comprehensive analysis and judgement.Final design goes out the online detection of intelligent fault electric arc and acoustooptic alarm system, not only can realize detection, the forecast of low-tension distribution box electric fault, and supply voltage is shown in real time, can also realize the forewarning function to the electric disaster hidden-trouble of panel box.
This detector has sound and light alarm, man-machine interaction and CAN bus communication interface function, and it is placed away from on-the-spot place, for managerial personnel's remote monitoring detector, and is responsible for the condition of a fire to be uploaded to upper machine.Keeper can also carry out remote monitoring by host computer also can management data.Host computer is responsible for that singlechip controller is transmitted to data and is shown on interface, and operating personnel can adjust by the parameter to detector, and it is also a database simultaneously, and failure message is stored for analysis.
cAN bus communication circuit: this structure efficiency is high and antijamming capability is strong, this system is taked intelligent distributed design philosophy, each node can pass through CAN bus distributing data, and the burden that this design has alleviated system has met accurately and the needs of the Fast Prediction condition of a fire simultaneously.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. a fault electric arc detection system, it is characterized in that: this fault electric arc detector set current transformer (1) and residual current transformer (2), current transformer (1) is responsible for gathering live wire current signal, the signal that current transformer (1) gathers is through low-pass filter (3) and amplifier A(5) after be sent to single-chip microcomputer (8), residual current is gathered by residual current transformer (2), the signal that residual current transformer (2) gathers is through amplifier C(6) after be sent to single-chip microcomputer (8), another road signal that current transformer (1) gathers is through amplifier B(4) after be sent to single-chip microcomputer (8), temperature sensor (7) is connected with single-chip microcomputer (8), single-chip microcomputer (8) is connected with CAN bus communication circuit (9) simultaneously.
2. fault electric arc detection system according to claim 1, is characterized in that: single-chip microcomputer (8) adopts 16 single-chip microcomputers of MSP430F1611.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420407552.XU CN203966277U (en) | 2014-07-23 | 2014-07-23 | Fault electric arc detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420407552.XU CN203966277U (en) | 2014-07-23 | 2014-07-23 | Fault electric arc detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203966277U true CN203966277U (en) | 2014-11-26 |
Family
ID=51926833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420407552.XU Expired - Lifetime CN203966277U (en) | 2014-07-23 | 2014-07-23 | Fault electric arc detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203966277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771898A (en) * | 2016-11-27 | 2017-05-31 | 福州大学 | Series fault arc detection device and its method based on Higher Order Cumulants identification |
-
2014
- 2014-07-23 CN CN201420407552.XU patent/CN203966277U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771898A (en) * | 2016-11-27 | 2017-05-31 | 福州大学 | Series fault arc detection device and its method based on Higher Order Cumulants identification |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205157723U (en) | Partial discharge monitoring system | |
| CN203929969U (en) | Arc fault detection device | |
| CN104678265A (en) | Detection device and detection method for series arc faults | |
| CN107340459A (en) | A kind of DC Line Fault arc method for measuring and system | |
| CN205753370U (en) | A kind of arc light protecting system | |
| CN105334811A (en) | Wireless tower monitoring method of power lines based on ZigBee network | |
| CN103676888A (en) | System and method for monitoring ring main unit cable joint temperature | |
| CN112309075A (en) | Fire early warning system of photovoltaic power station | |
| CN102611069A (en) | Electric arc fault protector | |
| CN205864361U (en) | A kind of Intelligent photovoltaic combiner box of band arcing monitoring function | |
| CN103366490A (en) | Electrical fire early-warning device and electrical fire early-warning method | |
| CN205792453U (en) | A kind of distributed photovoltaic system online insulation against ground safety monitoring assembly | |
| CN203572909U (en) | Single-phase ground fault detection circuit and system | |
| CN103674293A (en) | Dry-type electric reactor temperature detection system | |
| CN106443371A (en) | Novel cable insulation online detection apparatus | |
| CN204044977U (en) | A kind of wireless alarming in short range of electric power formula ground wire | |
| CN106018967B (en) | The online insulation against ground safety monitoring assembly of distributed photovoltaic system | |
| CN204719178U (en) | A kind of switch cubicle arc light/Partial discharge detector | |
| CN203966277U (en) | Fault electric arc detection system | |
| CN203299989U (en) | Network intelligent detector for electric fire protection | |
| KR101954273B1 (en) | A Smart Cabinet Panel System | |
| CN103645419B (en) | The fault early warning system of wind energy turbine set power circuit and method | |
| CN205333119U (en) | Low -voltage switchgear on -line monitoring device in intelligence | |
| CN203385783U (en) | Low-power intelligent high-voltage charged display locking device based on AVR microcontroller | |
| CN204046153U (en) | The circuit breaker that tape jam arc protection function is reported to the police |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |