CN202057756U - Distribution network fault locating system based on fault indicator - Google Patents
Distribution network fault locating system based on fault indicator Download PDFInfo
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- CN202057756U CN202057756U CN2011201633465U CN201120163346U CN202057756U CN 202057756 U CN202057756 U CN 202057756U CN 2011201633465 U CN2011201633465 U CN 2011201633465U CN 201120163346 U CN201120163346 U CN 201120163346U CN 202057756 U CN202057756 U CN 202057756U
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Abstract
The utility model discloses a distribution network fault locating system based on a fault indicator. The system comprises the fault indicator, a data collector and a background monitoring system, wherein the fault indictor comprises a field intensity sensor, a current transformer, a signal processing circuit, a control circuit, a wireless communication module, a power-gaining coil, a protective circuit, and a power supply managing circuit, the iron core of the current transformer employs a stainless steel soft magnetic material, one end of the power-gaining coil is in series connection with the measuring coil of the current transformer, the other end of the power-gaining coil is connected with the input end of the protective circuit, and the output end of the protective circuit is used for charging a battery in the fault indicator via the power supply managing circuit. The iron core of the current transformer in the fault indicator employs the stainless steel soft magnetic material, thus the iron core is stainless, an initial magnetic conductibility is high, and measuring precision is high; and a wire induction power-gaining mode is employed so as to realize the technique of self power gaining from high voltage wire low load current (magnetic field), provide energy to wireless communication, and make the service lifetime of a product longer.
Description
Technical field
The utility model relates to localization of fault field in the power distribution network, relates in particular to a kind of distribution fault location system based on fault detector.
Background technology
At present, power distribution network is contacted directly the user, and its reliable power supply capacity and power supply quality are the direct embodiment of electric power enterprise economic benefit, and immeasurable social benefit is arranged again.Distribution network failure location automatically has a significant impact improving power supply reliability as an important content of power distribution automation, has also obtained increasing attention.Distribution system is complicated because branch line is many, when system breaks down, find out concrete abort situation and often need expend a large amount of human and material resources and time.Though localization of fault is studied more, also there are various shaped articles to provide, all need artificial scene to search basically, automatization level is not high; The fault location system that the robotization formula is also arranged at present, but the wireless telecommunications energy is bigger, as inner powered battery only, then serviceable life short, and measuring accuracy is not high.
The utility model content
The purpose of this utility model provides a kind of distribution fault location system based on fault detector, measuring accuracy height, long service life.
The utility model adopts following technical proposals: a kind of distribution fault location system based on fault detector; comprise fault detector; data acquisition unit and background monitoring system; wherein fault detector comprises field strength sensor; current transformer; signal processing circuit; control module and wireless communication module; also comprise the power taking coil; holding circuit; electric power management circuit; wherein the iron core of current transformer adopts stainless steel soft magnetism material; power taking coil one end is connected with the measurement coil of current transformer; the other end is connected with the input end of holding circuit; the output terminal of holding circuit is connected with the input end of electric power management circuit, and the output terminal of electric power management circuit is used for the battery charge to fault detector.
Described data acquisition unit comprises communication module and control module, and control module is its power supply by photovoltaic cell, and the FPDP of control module connects wireless communication module.
Described background monitoring system comprises master station, enterprise servers and communication network, and enterprise servers are communicated by letter with data acquisition unit by communication network, and enterprise servers are connected with master station.
The utility model is based on the automatical and efficient trouble spot of a cover of fault detector technology, gsm communication technology and detects and positioning system, be mainly used in the automatic detection and the location of the various trouble spots of distribution system, comprise that phase fault and singlephase earth fault detect and the location.The iron core of the current sensor in the fault detector in the utility model adopts stainless steel soft magnetism material, its non-corrosive, initial permeability height, measuring accuracy height; And adopt lead induction way to take power, realized from the technology of the little load current of high-voltage conducting wires (magnetic field) from power taking, for wireless telecommunications provide energy, it is more permanent that product is used, and guarantees that for this reason arrive 10 years the serviceable life of fault detector; Wherein data acquisition unit also adopts the power technology of asking for, and total system is also more permanent serviceable life.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the circuit block diagram of fault detector of the present utility model;
Fig. 3 is the circuit block diagram of data acquisition unit of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises fault detector FCI, data acquisition unit DCU and background monitoring system based on the distribution fault location system of fault detector, background monitoring system comprises master station, enterprise servers and communication network (GSM mobile network), enterprise servers are communicated by letter with data acquisition unit by communication network, and enterprise servers are connected with master station.As shown in Figure 2; fault detector comprises field strength sensor 1, current transformer 2, signal processing circuit, control module and wireless communication module; also have power taking coil 4, holding circuit and electric power management circuit; wherein power taking coil 4 is connected with the measurement coil 3 of current transformer 2; the iron core of current transformer 2 adopts stainless steel soft magnetism material; the output terminal of power taking coil 4 is connected with the input end of holding circuit; the output terminal of holding circuit is connected with the input end of electric power management circuit, and the output terminal of electric power management circuit is used for battery 5 chargings to fault detector.Wherein holding circuit and electric power management circuit are used for making the power safety reliably working, are mature technology; Signal processing circuit comprises signal conditioning circuit and transient state treatment circuit, is prior art.Fault detector adopts low consumption circuit, and the iron core of current transformer 2 adopts stainless steel soft magnetism material, its non-corrosive, initial permeability height, measuring accuracy height; And adopt lead induction way to take power, realized from the technology of the little load current of high-voltage conducting wires (magnetic field) from power taking, for wireless telecommunications provide energy, it is more permanent that product is used, and guarantees that for this reason arrive 10 years the serviceable life of fault detector.As shown in Figure 3, data acquisition unit comprises communication module and control module, control module is its power supply by photovoltaic cell 7 and accumulator 8, the FPDP of control module is connected with the GPRS communication module with wireless communication module respectively, wireless communication module is communicated by letter with fault detector, and the GPRS communication module connects communicates by letter with communication network.Data acquisition unit DCU provides two-way, how main wireless communication network (this locality) and long-range GPRS mechanics of communication, on-line monitoring and distribution automation interface function, and realized the power taking technology of solar panel at rainy weather, for wireless telecommunications and backup battery provide electric energy.
As Fig. 1, Fig. 2, shown in Figure 3, at first fault detector FCI is installed in and reaches on the branch line on each circuit, when circuit normally moves, fault detector FCI gathers the electric current (stable state of circuit 6 in real time, transient state), voltage data, data acquisition unit DCU adopts POLLING stipulations (question and answer mode transmission) each fault detector of poll downwards, fault detector is replied by default communication strategy, promptly initiatively sends electric current by a default interval time and an optional wireless frequency modulation channel (always having 64 independently wireless channels), real time datas such as voltage are to data acquisition unit DCU.Can get the communication energy when load current fully during greater than 20A, when communication, can accomplish " answering all the questions "; When load current during less than 20A, can only get limited electric energy, the situation that " two ask that one answers " or " ten ask that one answers " when communication, can occur, fault detector internal wireless communication module is all in dormancy At All Other Times, to reduce battery loss, also regularly " waking up " once, to receive and to carry out main website remote control (board turning, involution) and parameter regulation order.For the 10KV distribution network systems, when short trouble or earth fault appearred in circuit, fault detector can detect fault current and voltage variety, if meet specific failure criterion, then local board turning shows, and initiatively data such as actuating signal is sent to data acquisition unit DCU.Data acquisition unit DCU regularly reports the calling request, after receiving the calling order, upload the data to public mobile network GSM, and background monitoring system receives or send data through Ethernet again.Background monitoring system receives the various information of field erected fault detector FCI, pass through topological analysis, provide the event of failure information of fault section and fault-time, and record trouble information (event of failure record and current maxima, the maximum variable quantity of voltage).Can also abort situation information be sent on related personnel's mobile phone by the mode of GSM short message simultaneously, help the maintenance personal to rush towards the scene rapidly, fix a breakdown, recover normal power supply.For 10KV distribution earth fault, because the ground current component is less, so the judgement for earth fault is a difficult problem, because current transformer has adopted the high initial permeability material, make current detection accuracy improve greatly, thereby also improved the success ratio of judging earth fault, the total system work efficiency is improved.
Claims (3)
1. distribution fault location system based on fault detector; comprise fault detector; data acquisition unit and background monitoring system; wherein fault detector comprises field strength sensor; current transformer; signal processing circuit; control module and wireless communication module; it is characterized in that: also comprise the power taking coil; holding circuit; electric power management circuit; wherein the iron core of current transformer adopts stainless steel soft magnetism material; power taking coil one end is connected with the measurement coil of current transformer; the other end is connected with the input end of holding circuit; the output terminal of holding circuit is connected with the input end of electric power management circuit, and the output terminal of electric power management circuit is used for the battery charge to fault detector.
2. the distribution fault location system based on fault detector according to claim 1, it is characterized in that: described data acquisition unit comprises communication module and control module, control module is its power supply by photovoltaic cell, and the FPDP of control module connects communication module.
3. the distribution fault location system based on fault detector according to claim 1 and 2, it is characterized in that: described background monitoring system comprises master station, enterprise servers and communication network, enterprise servers are communicated by letter with data acquisition unit by communication network, and enterprise servers are connected with master station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201633465U CN202057756U (en) | 2010-12-15 | 2011-05-20 | Distribution network fault locating system based on fault indicator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020660824.9 | 2010-12-15 | ||
| CN201020660824 | 2010-12-15 | ||
| CN2011201633465U CN202057756U (en) | 2010-12-15 | 2011-05-20 | Distribution network fault locating system based on fault indicator |
Publications (1)
| Publication Number | Publication Date |
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| CN202057756U true CN202057756U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201633465U Expired - Fee Related CN202057756U (en) | 2010-12-15 | 2011-05-20 | Distribution network fault locating system based on fault indicator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237604A (en) * | 2014-08-28 | 2014-12-24 | 国家电网公司 | Current monitoring warning device for overhead transmission line |
| CN104377782A (en) * | 2014-11-28 | 2015-02-25 | 国家电网公司 | Distribution line online monitoring and collecting terminal supporting automatic line electricity getting |
| CN105067960A (en) * | 2015-09-17 | 2015-11-18 | 珠海汇智电力科技有限公司 | Distribution network fault location system based on big data and method thereof |
| CN106646132A (en) * | 2016-12-16 | 2017-05-10 | 云南电网有限责任公司玉溪供电局 | Single-phase grounding fault positioning rear-end fault indicator through signal active injection method, and positioning method therefor |
| CN106990329A (en) * | 2017-05-16 | 2017-07-28 | 国家电网公司 | A kind of distribution line dead electricity alarm signal harvester |
| CN108646146A (en) * | 2018-08-20 | 2018-10-12 | 国网河北省电力有限公司沧州供电分公司 | Distribution wire On-line Fault monitoring method and terminal device |
-
2011
- 2011-05-20 CN CN2011201633465U patent/CN202057756U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237604A (en) * | 2014-08-28 | 2014-12-24 | 国家电网公司 | Current monitoring warning device for overhead transmission line |
| CN104377782A (en) * | 2014-11-28 | 2015-02-25 | 国家电网公司 | Distribution line online monitoring and collecting terminal supporting automatic line electricity getting |
| CN104377782B (en) * | 2014-11-28 | 2016-10-26 | 国家电网公司 | Support the distribution line on-line monitoring acquisition terminal of circuit automatic electricity getting |
| CN105067960A (en) * | 2015-09-17 | 2015-11-18 | 珠海汇智电力科技有限公司 | Distribution network fault location system based on big data and method thereof |
| CN106646132A (en) * | 2016-12-16 | 2017-05-10 | 云南电网有限责任公司玉溪供电局 | Single-phase grounding fault positioning rear-end fault indicator through signal active injection method, and positioning method therefor |
| CN106990329A (en) * | 2017-05-16 | 2017-07-28 | 国家电网公司 | A kind of distribution line dead electricity alarm signal harvester |
| CN108646146A (en) * | 2018-08-20 | 2018-10-12 | 国网河北省电力有限公司沧州供电分公司 | Distribution wire On-line Fault monitoring method and terminal device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20180520 |
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| CF01 | Termination of patent right due to non-payment of annual fee |