CN109286177A - A kind of intelligent trouble electric arc follows learning method and system automatically - Google Patents

A kind of intelligent trouble electric arc follows learning method and system automatically Download PDF

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Publication number
CN109286177A
CN109286177A CN201811308668.7A CN201811308668A CN109286177A CN 109286177 A CN109286177 A CN 109286177A CN 201811308668 A CN201811308668 A CN 201811308668A CN 109286177 A CN109286177 A CN 109286177A
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CN
China
Prior art keywords
data
electric arc
given threshold
automatically
module
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Pending
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CN201811308668.7A
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Chinese (zh)
Inventor
毛海锋
楼铭达
尤文杰
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Following Electrical Equipment Ltd Co In Suzhou
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Following Electrical Equipment Ltd Co In Suzhou
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Priority to CN201811308668.7A priority Critical patent/CN109286177A/en
Publication of CN109286177A publication Critical patent/CN109286177A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/006Calibration or setting of parameters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured

Abstract

The present invention relates to a kind of intelligent trouble electric arcs to follow learning method and system automatically, and steps of the method are S1. is acquired processing to the electric arc in circuit and obtains corresponding data;S2. the data are compared with the given threshold in control system, if the data are more than given threshold and cause to trip, after user normally closes a floodgate, the given threshold is turned up automatically for control system;Repeating the step threshold will be turned up to setting extreme value;When control system power loss or restart, which restores to initial given threshold;S3., designated time period is set in control system, and after the sampling electric arc in circuit is consistently less than current given threshold designated time period, current given threshold is restored to initial given threshold.By judging the electric arc in circuit, given threshold is adjusted as needed, makes it suitable for good arc present in circuit, which is recorded, will not trip when encountering the waveform electric arc again, improve the satisfaction of user power utilization.

Description

A kind of intelligent trouble electric arc follows learning method and system automatically
Technical field
The present invention relates to the terminal power supply protection systems in low-voltage power supply technical field, more particularly, to a kind of intelligent trouble Electric arc follows learning method and system automatically.
Background technique
At present in the low-voltage power supply system in China and distribution terminal circuit with relatively broad for universal frame open circuit The residue without overcurrent protection of device (ACB), breaker of plastic casing (MCB), miniature circuit breaker (MCB), household and similar applications Electric current action breaker (RCCB), household and residual current action breaker (RCBO) with overcurrent protection of similar applications etc. All kinds of breaker compositions;Existing power supply-distribution system can realize all kinds of overload protections, short-circuit protection and earth leakage protective very well. But since arc fault occurs, especially series winding electric arc limits the fault current of electric arc due to loading, and current strength is smaller, low In the overcurrent protection setting value of all kinds of breakers of current electric system, therefore full protection cannot be carried out to arc fault, to people People's security of the lives and property, which causes, to be seriously threatened.
Various countries have carried out research energetically to electric arc fault protection, successively occur arc fault detection device (AFD) and The product of AFD and MCB, RCBO combinative movement, arc-fault circuit interrupter (abbreviation AFDD, the U.S. with breaker protective property Claim AFCI), current all kinds of protection device for arc faults pass through the arc fault in detection load electrical route, and in testing number Circuit is cut off according to when reaching protection threshold value, terminating circuit electrical fire due to caused by arc fault can be effectively prevented.Electricity Arc error protection is to be begun one's study by the U.S. from the nineties, and UL1699 " arc fault open circuit has been worked out in 2 months 1999 earliest Device " standard (first edition);The country has also carried out the research of related project, and professor Chen Degui in 2007 has delivered " low-tension arc event Hinder breaker --- a kind of New Low Voltage protects electric appliance " paper, GBT had been drafted by Shanghai Electrical Apparatus Research Institute in 2013 31143 " the general requirements of electric arc fault protection electric appliance (AFDD) ".AFDD compensates for other protective devices cannot be to arc fault The problem of carrying out effective protection, can effectively take precautions against the fire due to caused by arc fault.
Electric arc is often accompanied by the variation of high temperature, high pressure, flash of light and electric current and voltage waveform when generating, thus it is some compared with Arc-detection in small Space Facilities usually passes through detection infrared heat, and electromagnetic wave and voltage, the unusual waveforms etc. of electric current are comprehensive Conjunction condition judges, can determine the generation of electric arc with higher precision.But due to various factors in civil buildings distribution It restricts, can only often determine whether there is the generation of electric arc using the sampling and analysis of the unusual waveforms to voltage, electric current, but by The diversification of the load of normal arc (being commonly called as: good arc), and part normal load waveform and electric arc event are generated in terminal user Barrier (being commonly called as: bad arc) waveform is similar to be easy to cause erroneous judgement, and it is easy such as cannot normal load waveform sufficiently to be acquired and be analyzed Lead to product false tripping, the satisfaction for causing user to use is low.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of intelligent trouble electric arcs to follow learning method and system automatically, It can be determined according to the waveform combination closing by hand operation of sampling the quality of electric arc and accordingly adjustment given threshold come With arc has been adapted to, the satisfaction of residential electricity consumption is improved.
The technical scheme adopted by the invention to solve the technical problem is that: a kind of intelligent trouble electric arc follows study side automatically Method, steps of the method are,
S1. firstly, being acquired processing to the electric arc in circuit obtains corresponding data;
S2. the data are compared with the given threshold in control system, if the data are more than given threshold and cause Tripping, after user normally closes a floodgate, the given threshold is turned up automatically for control system;The step is repeated until circuit is total in the circuit It works normally;When control system power loss or restart, which restores to initial given threshold;
S3., designated time period is set in control system, when the sampling electric arc in circuit is consistently less than current given threshold After designated time period, current given threshold is restored to initial given threshold.
Further specifically, being handled to obtain to the data collected after the step S3 circuit stability Its Wave data is simultaneously compared with stored Wave data, if by comparison after obtain the waveform be not belonging to it is stored Electric arc waveform, which is stored in database.
Further specifically, the arc waveform data of storage are uploaded to network data base by network, for other Family downloading uses.
A kind of intelligent trouble electric arc follows learning system automatically, including for controlling circuit breaker trip turn-off module, use In the acquisition module of acquisition electric arc and for handling signal and controlling the microprocessor of turn-off module movement, which further includes The judgment module and data module being connected with the microprocessor, the data module be used for store the system given threshold and The Wave data of electric arc, the acquisition module collect the arc signal in circuit and carry out signal transmitting microprocessor Signal processing, the given threshold that judgment module receives in signal and data module after microprocessor processes, which compares, to be sentenced Disconnected, if being more than given threshold circuit breaker trip, microprocessor turns down given threshold, and user closes a floodgate, and acquisition module continues to acquire Data compare until normal operation circuit.
Further specifically, the arc waveform data are stored in data module by the microprocessor.
Further specifically, the system includes network module, the arc waveform number that will be stored in data module Use is downloaded for other users according to network data base is uploaded to.
Further specifically, the network module includes cable network and wireless network.
Further specifically, the system includes display terminal, the display terminal passes through network, infrared ray or bluetooth It is connect with the system.
Further specifically, the display terminal is computer or mobile electronic device.
Further specifically, the system includes GPS location locating module.
The beneficial effects of the present invention are: using the above method and system, by judging the electric arc in circuit, and The given threshold of system is adjusted as needed, makes it suitable for good arc present in circuit, meanwhile, by the arc waveform into Row record, will not trip when encountering the waveform electric arc again, improve the satisfaction of user power utilization.
Detailed description of the invention
Fig. 1 is the flow chart of inventive method;
Fig. 2 is the structural block diagram of present system.
Specific embodiment
The present invention is explained in detail with reference to the accompanying drawing.
A kind of intelligent trouble electric arc follows learning method automatically as shown in Figure 1, steps of the method are,
S1. firstly, being acquired processing to the electric arc in circuit obtains corresponding data;It collects increased negative in circuit The electric arc that load or other failures generate, and handled to obtain corresponding arc data.
S2. the data are compared with the given threshold in control system, if the data are more than given threshold and cause Tripping, after user normally closes a floodgate, the given threshold is turned up automatically for control system;Repeating the step threshold will be turned up to setting pole Value;When control system power loss or restart, which restores to initial given threshold;Threshold value is carried out in control system Setting, three threshold values, respectively threshold value A, threshold value B and threshold value C are set in the present case, and threshold value A is can be after electric arc generation More sensitively protected, threshold value C is the cause calamity electric arc that can be protected under larger current, threshold value B between threshold value A and threshold value C, When due to determining that fault electric arc is more than to trip caused by given threshold A, control system will set threshold after user normally closes a floodgate The sensitivity of value is automatically turned down to threshold value B, if the electric arc makes circuit trip again, closing operation, control are user again System automatically turns down given threshold sensitivity to C grades;Also it can according to need and multiple threshold values be set between threshold value A and threshold value C, It is adjusted by multiple closing operation, can also be reduced to close a floodgate again after protecting from threshold value A is directly adjusted to threshold for protection threshold value Value C;When control system power loss or restart, upper electric control system, which is restarted, again is adjusted to initial threshold A for protection threshold value.
S3., designated time period is set in control system, and designated time period is arranged at 5~10 minutes, when adopting in circuit After sample electric arc is consistently less than current given threshold designated time period, current given threshold is restored to initial given threshold A.
After the step S3 circuit stability, to the data collected handled to obtain its Wave data and with Stored Wave data compares, if obtaining the waveform that the waveform is not belonging to stored electric arc after comparison, The Wave data is stored in database, meanwhile, on the basis of complementary network function, by the arc waveform data of storage Network data base is uploaded to by network, other users download the arc waveform data by way of updating local data base to be made With.
Based on the above method, a kind of intelligent trouble electric arc is obtained as shown in Figure 2 and follows learning system automatically, including for controlling The turn-off module of circuit breaker trip processed, the acquisition module for acquiring electric arc and dynamic for handling signal and controlling turn-off module The microprocessor of work, the system further include the judgment module being connected with the microprocessor and data module, the data module For storing the given threshold of the system and the Wave data of electric arc, the acquisition module collects the arc signal in circuit And signal transmitting microprocessor is subjected to signal processing, judgment module receives the signal and data mould after microprocessor processes Given threshold in block compares judgement, if being more than given threshold circuit breaker trip, microprocessor turns down given threshold, uses Family is closed a floodgate, and acquisition module continues acquisition data and compares until normal operation circuit;Sensitivity is carried out to given threshold again When adjustment, at least need first to carry out the setting of two threshold values, first is exactly with higher sensitivity threshold value A, and second is sensitive Minimum threshold value C is spent, and selects suitable numerical value to be set as threshold value B between the two threshold value As and threshold value C, it can also basis It needs to be arranged multiple threshold values, is controlled with facilitating.
Meanwhile the system arc waveform data can be handled by microprocessor as needed after be stored in number According in module, first it is compared with the arc waveform data in data module in collected electric arc, if in data module The Wave data is stored, when opening the electric arc produced by equipment next time, not will do it tripping.Collected number for convenience According to other users are facilitated, which includes network module, which can be cable network either wireless network, will be deposited The arc waveform data being stored in data module are uploaded to network data base and download use, other users for other users After downloading data, when the Wave data of the electric arc encountered belongs to the data of downloading, then circuit will not trip;Can to the system into Row timing upgrades, and other users are collected into arc data before upgrading and are downloaded in the data module.
Further, it is shown and is operated in order to facilitate, which includes display terminal, and display terminal can be Remotely by the computer of wired connection, it is also possible to the mobile electronic device by wireless connection, such as laptop, hand The mobile terminals such as machine, tablet computer are also possible to intelligent wearable device, and display terminal can be connected by way of network Connect, when no network can also short distance be directly connected to by infrared ray or bluetooth, can be improved efficiency;Together When, which includes GPS location locating module, by GPS positioning function, specific location can be apparent from, when circuit is sent out It when raw damage needs repairing, can quickly be positioned, improve maintenance efficiency.
To sum up, by networking, intelligentized design, realize that arc waveform automatic collection constantly improve the data of fault electric arc It collects;Meanwhile by can online upgrading promote intelligence degree and the service life period of product, reduce expense after sale and wind Danger.It is positioned by product G PS and Various types of data is collected, can provided by big data analysis for fire-fighting and other relevant departments all kinds of Data are for statistical analysis.
It is emphasized that: the above is only presently preferred embodiments of the present invention, not make in any form to the present invention Limitation, any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, All of which are still within the scope of the technical scheme of the invention.

Claims (10)

1. a kind of intelligent trouble electric arc follows learning method automatically, which is characterized in that steps of the method are,
S1. firstly, being acquired processing to the electric arc in circuit obtains corresponding data;
S2. the data are compared with the given threshold in control system, if the data are more than given threshold and cause to trip, After user normally closes a floodgate, the given threshold is turned up automatically for control system;The step is repeated until circuit is always normal in the circuit Work;When control system power loss or restart, which restores to initial given threshold;
S3., designated time period is set in control system, is specified when the sampling electric arc in circuit is consistently less than current given threshold After period, current given threshold is restored to initial given threshold.
2. intelligent trouble electric arc according to claim 1 follows learning method automatically, which is characterized in that in the step After S3 circuit stability, to the data collected handled to obtain its Wave data and with stored Wave data into The Wave data is stored in number if obtaining the waveform that the waveform is not belonging to stored electric arc after comparison by row comparison According in library.
3. intelligent trouble electric arc according to claim 2 follows learning method automatically, which is characterized in that by the electricity of storage Arc Wave data uploads to network data base by network, downloads and uses for other users.
4. a kind of intelligent trouble electric arc follows learning system automatically, including for controlling circuit breaker trip turn-off module, be used for Acquire electric arc acquisition module and for handle signal and control turn-off module movement microprocessor, which is characterized in that should System further includes the judgment module being connected with the microprocessor and data module, and the data module is for storing the system The Wave data of given threshold and electric arc, the acquisition module collect the arc signal in circuit and transmit the signal micro- Processor carries out signal processing, judgment module receive the given threshold in signal and data module after microprocessor processes into Row comparison judgement, if being more than given threshold circuit breaker trip, microprocessor turns down given threshold, and user closes a floodgate, acquisition module Continue acquisition data to compare until normal operation circuit.
5. intelligent trouble electric arc according to claim 4 follows learning system automatically, which is characterized in that the micro process The arc waveform data are stored in data module by device.
6. intelligent trouble electric arc according to claim 5 follows learning system automatically, which is characterized in that the system includes net Network module, the arc waveform data being stored in data module are uploaded to network data base to be made for other users downloading With.
7. intelligent trouble electric arc according to claim 6 follows learning system automatically, which is characterized in that the network mould Block includes cable network and wireless network.
8. intelligent trouble electric arc according to claim 4 follows learning system automatically, which is characterized in that the system includes aobvious Show terminal, the display terminal is connect by network, infrared ray or bluetooth with the system.
9. intelligent trouble electric arc according to claim 4 follows learning system automatically, which is characterized in that the display is whole End is computer or mobile electronic device.
10. intelligent trouble electric arc according to claim 4 follows learning system automatically, which is characterized in that the system includes GPS location locating module.
CN201811308668.7A 2018-11-05 2018-11-05 A kind of intelligent trouble electric arc follows learning method and system automatically Pending CN109286177A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110398669A (en) * 2019-06-11 2019-11-01 深圳供电局有限公司 Method for detecting arc
CN110518541A (en) * 2019-07-15 2019-11-29 珠海格力电器股份有限公司 Detect control method, device, equipment and its computer-readable medium of electric arc

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110398669A (en) * 2019-06-11 2019-11-01 深圳供电局有限公司 Method for detecting arc
CN110518541A (en) * 2019-07-15 2019-11-29 珠海格力电器股份有限公司 Detect control method, device, equipment and its computer-readable medium of electric arc

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