CN205263238U - Join in marriage power system fault travelling wave positioning system - Google Patents
Join in marriage power system fault travelling wave positioning system Download PDFInfo
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- CN205263238U CN205263238U CN201520868213.6U CN201520868213U CN205263238U CN 205263238 U CN205263238 U CN 205263238U CN 201520868213 U CN201520868213 U CN 201520868213U CN 205263238 U CN205263238 U CN 205263238U
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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
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Locating Faults (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model provides a join in marriage power system fault travelling wave positioning system, includes a plurality of travelling wave data acquisition unit and cloud computing platform, every travelling wave data acquisition unit includes: signal conversion board, data acquisition board, CPU management module, solar energy electroplax, aerogenerator, battery, be used for control aerogenerator and solar energy electroplax are given storage battery charging's honourable complementary controller, be accumulator output's DC conversion the dc -to -ac converter of alternating current, the utility model discloses a trouble initial line wave -wave head time is confirmed through seek and calculate the travelling wave data that each travelling wave data acquisition unit on the distribution lines sent on cloud computing platform in the aspect, output range finding result to confirm to join in marriage the power system fault position, on the other hand, the supply voltage adopts two kinds of power supply modes on new forms of energy and the battery, has ensured the normal operating of system, need not often change the battery, can make full use of open -air natural environmental condition, effectively guaranteed entire system's power supply operation.
Description
Technical field
The utility model relates to field of power, more particularly, relates to the capable ripple of a kind of distribution network failure fixedPosition system.
Background technology
In power distribution network, extensively adopt isolated neutral, through low resistance grounding or through grounding through arcThe method of operation, is small current neutral grounding system. When this kind of system generation singlephase earth fault, due to the earth withBetween neutral point, be not directly electrically connected or be connected in series reactor, therefore short circuit current is very little, protective deviceDo not need to move at once tripping operation, thereby improved system reliability of operation. Especially under transient fault condition,Short dot voluntarily arc extinguishing recovers insulation, does not need operations staff to take what measure, and this uses for reducingFamily in short-term frequency of power cut has positive effect. But thing followed problem is: if fault is permanent,System only allows under failure condition, to continue operation 1～2 hour, and now operations staff must be as early as possibleFind out short circuit line and short dot, to take Corresponding Countermeasures to remove fault, recovery system normally moves. WithThe growth of power system capacity, feeder line increases, and causes system capacitive current to increase, if there is single-phase earthing eventBarrier, operate with failure for a long time easily bring out the duration long, affect wide indirect arc overvoltage, enterAnd damage equipment destroys system safety operation. This has just proposed the fault-location problem of small current neutral grounding system.
Realizing at present the method for automatic short-circuit fault location, is mainly the feedback that utilizes the installing of line load switch placeLine automation detection and control terminal (FTU) is realized fault split fix. Detect measurement electric current by circuit FTU mutualWhether sensor (TA) secondary current occurs that interval angle judges circuit over current fault, and testing result is delivered to numberAccording to gathering and monitoring (SCADA) system of control, system main website is corresponding according to the utilization of each FTU reporting informationFault location algorithm is determined guilty culprit section. For utilizing FTU to realize line fault location, be only suitable forIn the area of having realized distribution automation, but it is too high to realize distribution automation cost, has limited the large of the methodArea uses. Meanwhile, the method needs sufficient power supply to supply with, due to circuit is widely distributed and many places in evilIn bad regional environment, particularly The distance is far and the mountain is high for some places, and therefore the later stage gathers each multirow wave datumThe task that the power supply of device is safeguarded is heavy and loaded down with trivial details, is not easy to the regular behaviour such as the power supply maintenance of enforcement later stage, renewalDo.
Therefore, there is defect in prior art, needs to improve.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, provides a kind ofDistribution network failure travelling wave positioning system.
The utility model solves the technical scheme that its technical problem adopts: it is capable to construct a kind of distribution network failureRipple navigation system, comprise be arranged on distribution line for gathering power distribution network traveling wave fault data by row rippleSeveral row wave datum collecting units and the row ripple sending for receiving described row wave datum collecting unitFault data, and calculate the cloud computing platform of fault occurrence positions according to these traveling wave fault data;
Wherein, each described row wave datum collecting unit comprises: for the voltage isolation of distribution line is becomeChange the signal transducer of 0～10 volt of voltage signal output into, for gathering and record row wave datum, andThe data acquisition board that in the time that fault occurs, the traveling wave fault data that are recorded to sent, for described in receivingThe traveling wave fault data that data acquisition board sends also send to described cloud computing by it by wireless communication networksThe CPU administration module of platform, solar energy electroplax, wind-driven generator, battery, for controlling described wind-forceGenerator and solar energy electroplax are exported to the wind/light complementation controller of described charge in batteries, by batteryDirect current is converted to the inverter of alternating current;
Described cloud computing platform is connected by wireless communication networks with described row wave datum collecting unit, and signal turnsChange plate and be connected with the distribution transformer on distribution line, data acquisition board is connected with described signal transducer,CPU administration module is connected with data acquisition board via high-speed bus, wind-driven generator, solar energy electroplax all withWind/light complementation controller connects, and wind/light complementation controller, battery, inverter connect successively, and inverter dividesBe not connected with CPU administration module, data acquisition board and described signal transducer.
In distribution network failure travelling wave positioning system described in the utility model, described wind/light complementation controller bagDraw together: three current-voltage sampling circuits that are connected with wind-driven generator, solar energy electroplax and battery respectively;Connect respectively two DC/DC converters of wind-driven generator and battery, solar energy electroplax and battery; WithAnd respectively with three current-voltage sampling circuits and two single-chip microcomputers that DC/DC converter is connected.
In distribution network failure travelling wave positioning system described in the utility model, the model of described single-chip microcomputer isPIC16F877A。
In distribution network failure travelling wave positioning system described in the utility model, described data acquisition board comprises:For convert analog signal to data signal and carry out the D/A converting circuit of high speed acquisition and buffer memory, forReceive from global position system synchronously to time signal, will gather and the data of buffer memory are stamped absolute time markSynchronously to time unit, whether exceed setting threshold for comparative voltage Sudden Changing Rate, exceed when setting value and judge lineThe fault judging circuit that breaks down in road, occur for record trouble before setting-up time and fault set after occurringThe wave recording device of the row wave datum of time;
Described D/A converting circuit is connected with described signal transducer, synchronously to time unit and D/A converting circuitConnect, fault judging circuit connect respectively synchronously to time unit and wave recording device.
In distribution network failure travelling wave positioning system described in the utility model, described fault judging circuit and recordWave apparatus is DSP digital signal processor.
In distribution network failure travelling wave positioning system described in the utility model, described cloud computing platform includes:
Wavefront detecting unit, adopts for searching and calculate each row wave datum that is positioned at same distribution lineThe fault data that collection unit sends, determines the initial wavefront time of fault;
Abort situation computing unit, is connected with described wavefront detecting unit, for according to fault initial rowWave-wave head time and default line length, determine abort situation;
Result output unit, is connected with described abort situation computing unit, for passing through web or mobile communications networkOutput abort situation information.
Implement distribution network failure travelling wave positioning system of the present utility model, there is following beneficial effect: this practicalityNovel one side by searching and calculate each row wave datum collection on distribution line on cloud computing platformThe row wave datum that unit sends, determines the initial wavefront time of fault, output range finding result, thus reachDetermine quickly and accurately the effect of distribution network failure position; On the other hand, power supply supply adopts new forms of energyWith two kinds of power supply modes of battery, guarantee the normal operation of system, need not often change battery; CanMake full use of the natural environmental condition in field, effectively ensured the powered operation of whole system.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of distribution network failure travelling wave positioning system of the present utility model;
Fig. 2 is the structural representation of wind/light complementation controller;
Fig. 3 is that distribution network failure travelling wave positioning system of the present utility model is in the time carrying out both-end travelling wave rangingSchematic diagram.
Detailed description of the invention
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast attachedFigure describes detailed description of the invention of the present utility model in detail.
As shown in Figure 1, be the structural representation of distribution network failure travelling wave positioning system of the present utility model. ThisThe distribution network failure travelling wave positioning system of utility model comprises: be arranged on distribution line for by row rippleGather several row wave datum collecting units of power distribution network traveling wave fault data and for receiving described row rippleThe traveling wave fault data that data acquisition unit sends, and calculate fault generation position according to these traveling wave fault dataThe cloud computing platform of putting; Wherein, each described row wave datum collecting unit comprises:
Turn for the signal that the voltage isolated variable of distribution line is become to 0～10 volt of voltage signal outputChange plate 1, for gather and record row wave datum, and in the time that fault occurs by the traveling wave fault data that are recorded toThe data acquisition board 2 that sends, for receiving traveling wave fault data that described data acquisition board 2 sends alsoIt is sent to CPU administration module 3, the solar energy electroplax of described cloud computing platform by wireless communication networks4, wind-driven generator 5, battery 7, for controlling described wind-driven generator 5 and solar energy electroplax 4The wind/light complementation controller 6 charging to described battery 7, the direct current that battery 7 is exported are converted to friendshipFlow electric inverter 8;
Described cloud computing platform is connected by wireless communication networks with described row wave datum collecting unit, and signal turnsChange plate 1 and be connected with the distribution transformer on distribution line, data acquisition board 2 and described signal transducer 1Be connected, CPU administration module 3 is connected with data acquisition board 2 via high-speed bus, wind-driven generator 5, tooSun can all be connected with wind/light complementation controller 6 by electroplax 4, wind/light complementation controller 6, battery 7, inversionDevice 8 connects successively, inverter 8 respectively with CPU administration module 3, data acquisition board 2 and described signalChange-over panel 1 connects.
The voltage that signal transducer 1 obtains comprises distribution transformer high-pressure side transformer secondary side phase voltageOr residual voltage, and low-pressure side phase voltage or line voltage. Under normal operation, data acquisition board 2 withFrequency more than 5MHz also writes SDRAM under the control of FPGA, SDRAM be divided into taking 80 milliseconds asSome storage areas of unit taking piece as control module, receive GPS or big-dipper satellite positioning systems simultaneouslySignal lock in time of system etc., the pulse per second (PPS) of authorizing using GPS or B code equal time are synchronously adopted as deviceSample markers. Data are being write the fashionable absolute time mark of being stamped, and time signal error is 1 × 10-8 second. This timeMark is realized other device data in system unified in time.
Introduce in detail the principle that realizes of wind light mutual complementing power supply of the present utility model below:
With reference to figure 2, described wind/light complementation controller 13 comprises: respectively with wind-driven generator 5, solar-electricityThree current-voltage sampling circuits that plate 4 and battery 7 connect; Connect respectively wind-driven generator 5 and holdTwo DC/DC converters of battery 7, solar energy electroplax 4 and battery 7; And respectively with three electric currentsThe single-chip microcomputer that voltage sampling circuit is connected with two DC/DC converters.
Current-voltage sampling circuit can utilize sampling resistor to realize, and DC/DC converter can adopt DC/DCChip is realized, for example mc34063, and in the present embodiment, the model of single-chip microcomputer is PIC16F877A.
The principle of the utility model power supply is: single-chip microcomputer obtains solar energy electroplax according to current-voltage sampling circuitThe voltage of 4 outputs, the voltage of wind-driven generator 5 rectification outputs, voltage and the electric power storage of battery 14The charging currents in pond 7 etc., control two DC/DC converters, and then realize filling battery 7Electric control. Under the condition of wind, sunshine abundance, the electric energy of the two generation of scene can be combined, depositStorage, in battery 7, realizes the complementation of the two, and can by the DC voltage of battery 7 regulation outputsKeep stable.
Concrete, described data acquisition board 2 comprises: for analog signal being converted to data signal and carrying outThe D/A converting circuit 21 of high speed acquisition and buffer memory, for receive from global position system synchronously to timeSignal, by gather and the data of buffer memory stamp absolute time mark synchronously to time unit 22, for comparative voltageWhether Sudden Changing Rate exceedes setting threshold, judges the fault judging circuit of line failure while exceeding setting value23, there is the record ripple dress of the row wave datum of front setting-up time and the rear setting-up time of fault generation for record troublePut 24;
Described D/A converting circuit 21 is connected with described signal transducer 1, synchronously to time unit 22 and digital-to-analogueChange-over circuit 21 connects, fault judging circuit 23 connect respectively synchronously to time unit 22 and wave recording device 24.
Wherein, described fault judging circuit 23 and wave recording device 24 are DSP digital signal processor.
Concrete, described cloud computing platform includes:
Wavefront detecting unit 9, for searching and calculate each row wave datum that is positioned at same distribution lineThe fault data that collecting unit sends, determines the initial wavefront time of fault;
Abort situation computing unit 10, is connected with described wavefront detecting unit 9, for according to faultInitial wavefront time and default line length, determine abort situation;
Result output unit 11, is connected with described abort situation computing unit 10, for by web or moveMoving communication network output abort situation information.
In conjunction with Fig. 3, the principle of the utility model detection failure is: utilize fault traveling wave to arrive faulty line twoThe time difference of end calculates fault distance, as shown in Figure 3. For faulty line, establish transmission line of electricity completeLong L, trouble point initial row ripple reaches two ends bus M, and the time of N is respectively TM, TN, faultPoint is respectively apart from the distance at circuit two ends:
In formula, v is row wave-wave speed, and L is total track length.
Then automatically search and calculate each row ripple location dress that is positioned at same distribution line by cloud computing platformPut the fault data of sending, determine the initial wavefront time of fault, finally can calculate range finding result.
In sum, the utility model on the one hand by searching and calculating on distribution line on cloud computing platformThe row wave datum that sends of each row wave datum collecting unit, determine the initial wavefront time of fault, outputRange finding result, thus reach the effect of determining quickly and accurately distribution network failure position; On the other hand,Power supply supply adopts new forms of energy and two kinds of power supply modes of battery, has guaranteed the normal operation of system, need not be throughThe normal battery of changing; Can make full use of the natural environmental condition in field, effectively ensure the confession of whole systemElectricity operation.
By reference to the accompanying drawings embodiment of the present utility model is described above, but not office of the utility modelBe limited to above-mentioned detailed description of the invention, above-mentioned detailed description of the invention is only schematically, instead of restrictionProperty, those of ordinary skill in the art, under enlightenment of the present utility model, is not departing from the utility model ancestorIn the scope situation that purport and claim are protected, also can make a lot of forms, it is new that these all belong to this practicalityWithin the protection of type.
Claims (6)
1. a distribution network failure travelling wave positioning system, is characterized in that, comprises and being arranged on distribution lineFor gather several row wave datum collecting unit and use of power distribution network traveling wave fault data by row rippleIn the traveling wave fault data that receive described row wave datum collecting unit transmission, and according to this traveling wave fault data meterCalculate the cloud computing platform of fault occurrence positions;
Wherein, each described row wave datum collecting unit comprises: for the voltage isolation of distribution line is becomeChange the signal transducer (1) of 0～10 volt of voltage signal output into, for gathering and record row wave datum,And the data acquisition board (2) in the time that fault occurs, the traveling wave fault data that are recorded to being sent, for connecingReceive the traveling wave fault data of described data acquisition board (2) transmission and it is sent to by wireless communication networksCPU administration module (3), solar energy electroplax (4), the wind-driven generator (5) of described cloud computing platform, holdBattery (7), for control described wind-driven generator (5) and solar energy electroplax (4) give described battery(7) wind/light complementation controller (6) charging, the direct current that battery (7) is exported are converted to alternating currentInverter (8);
Described cloud computing platform is connected by wireless communication networks with described row wave datum collecting unit, and signal turnsChange plate (1) and be connected with the distribution transformer on distribution line, data acquisition board (2) and described signal conversionPlate (1) is connected, and CPU administration module (3) is connected with data acquisition board (2) via high-speed bus, windPower generator (5), solar energy electroplax (4) are all connected with wind/light complementation controller (6), wind light mutual complementing controlDevice processed (6), battery (7), inverter (8) connect successively, and inverter (8) is managed with CPU respectivelyModule (3), data acquisition board (2) and described signal transducer (1) connect.
2. distribution network failure travelling wave positioning system according to claim 1, is characterized in that, described inWind/light complementation controller (6) comprising: respectively with wind-driven generator (5), solar energy electroplax (4) and holdThree current-voltage sampling circuits that battery (7) connects; Connect respectively wind-driven generator (5) and battery(7), two DC/DC converters of solar energy electroplax (4) and battery (7); And respectively with threeThe single-chip microcomputer that current-voltage sampling circuit is connected with two DC/DC converters.
3. distribution network failure travelling wave positioning system according to claim 2, is characterized in that, described inThe model of single-chip microcomputer is PIC16F877A.
4. distribution network failure travelling wave positioning system according to claim 1, is characterized in that, described inData acquisition board (2) comprising: for analog signal being converted to data signal and carrying out high speed acquisition and ease upThe D/A converting circuit (21) deposited, for receive from global position system synchronously to time signal, will adoptCollection and the data of buffer memory stamp absolute time mark synchronously to time unit (22), for comparative voltage Sudden Changing Rate beThe no setting threshold that exceedes, exceedes fault judging circuit (23), the use of while setting value, judging line failureThere is the wave recording device of the row wave datum of rear setting-up time in setting-up time and fault before record trouble occurs(24)；
Described D/A converting circuit (21) is connected with described signal transducer (1), synchronously to time unit (22)Be connected with D/A converting circuit (21), fault judging circuit (23) connect respectively synchronously to time unit (22)And wave recording device (24).
5. distribution network failure travelling wave positioning system according to claim 4, is characterized in that, described inFault judging circuit (23) and wave recording device (24) are DSP digital signal processor.
6. distribution network failure travelling wave positioning system according to claim 1, is characterized in that, described inCloud computing platform includes:
Wavefront detecting unit (9), for searching and calculate each row wave number that is positioned at same distribution lineThe fault data sending according to collecting unit, determines the initial wavefront time of fault;
Abort situation computing unit (10), is connected with described wavefront detecting unit (9), for basisInitial wavefront time of fault and default line length, determine abort situation;
Result output unit (11), is connected with described abort situation computing unit (10), for passing through webOr mobile communications network output abort situation information.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868213.6U CN205263238U (en) | 2015-11-03 | 2015-11-03 | Join in marriage power system fault travelling wave positioning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520868213.6U CN205263238U (en) | 2015-11-03 | 2015-11-03 | Join in marriage power system fault travelling wave positioning system |
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| CN205263238U true CN205263238U (en) | 2016-05-25 |
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| CN201520868213.6U Expired - Fee Related CN205263238U (en) | 2015-11-03 | 2015-11-03 | Join in marriage power system fault travelling wave positioning system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974266A (en) * | 2016-05-27 | 2016-09-28 | 桂林赛普电子科技有限公司 | Fault positioning system and method for long distribution network line |
| CN107015110A (en) * | 2017-04-01 | 2017-08-04 | 云南电网有限责任公司瑞丽供电局 | Synchronous recording fault location system, method |
| CN110907748A (en) * | 2019-10-21 | 2020-03-24 | 贵州电网有限责任公司 | Distribution lines travelling wave fault acquisition and analysis device and fault positioning system |
| CN113960418A (en) * | 2021-11-19 | 2022-01-21 | 国网陕西省电力公司铜川供电公司 | Distribution line fault positioning method, system, device, terminal equipment and storage medium |
| CN114878971A (en) * | 2022-05-31 | 2022-08-09 | 国网北京市电力公司 | Method, device, equipment and medium for positioning fault point of power distribution network |
| CN115963358A (en) * | 2023-03-13 | 2023-04-14 | 昆明理工大学 | Fault location method and system for hybrid three-terminal flexible direct-current transmission line |
-
2015
- 2015-11-03 CN CN201520868213.6U patent/CN205263238U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974266A (en) * | 2016-05-27 | 2016-09-28 | 桂林赛普电子科技有限公司 | Fault positioning system and method for long distribution network line |
| CN107015110A (en) * | 2017-04-01 | 2017-08-04 | 云南电网有限责任公司瑞丽供电局 | Synchronous recording fault location system, method |
| CN110907748A (en) * | 2019-10-21 | 2020-03-24 | 贵州电网有限责任公司 | Distribution lines travelling wave fault acquisition and analysis device and fault positioning system |
| CN113960418A (en) * | 2021-11-19 | 2022-01-21 | 国网陕西省电力公司铜川供电公司 | Distribution line fault positioning method, system, device, terminal equipment and storage medium |
| CN114878971A (en) * | 2022-05-31 | 2022-08-09 | 国网北京市电力公司 | Method, device, equipment and medium for positioning fault point of power distribution network |
| CN114878971B (en) * | 2022-05-31 | 2024-01-30 | 国网北京市电力公司 | Power distribution network fault point positioning method, device, equipment and medium |
| CN115963358A (en) * | 2023-03-13 | 2023-04-14 | 昆明理工大学 | Fault location method and system for hybrid three-terminal flexible direct-current transmission line |
| CN115963358B (en) * | 2023-03-13 | 2023-08-04 | 昆明理工大学 | Mixed three-terminal flexible direct current transmission line fault location method and system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20161103 |