CN205301497U - Based on distributed distribution network travelling wave fault locating device - Google Patents
Based on distributed distribution network travelling wave fault locating device Download PDFInfo
- Publication number
- CN205301497U CN205301497U CN201620003822.XU CN201620003822U CN205301497U CN 205301497 U CN205301497 U CN 205301497U CN 201620003822 U CN201620003822 U CN 201620003822U CN 205301497 U CN205301497 U CN 205301497U
- Authority
- CN
- China
- Prior art keywords
- travelling wave
- distributed power
- coaxial cable
- unit
- power net
- 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 - Fee Related
Links
Landscapes
- Locating Faults (AREA)
Abstract
The utility model relates to a distributed distribution network travelling wave fault locating device that fault locating is accurate, reliable. Including punching formula travelling wave sensor, coaxial cable and distributed distribution network travelling wave location acquisition unit, wherein, punching formula travelling wave sensor cup joints on distribution transformer earth of casing line and distribution transformer neutal point earthing line, punching formula travelling wave sensor with distributing type distribution network travelling wave location acquisition unit pass through coaxial cable is connected. The time of getting rid of power system fault and ordering be can shorten, economic loss and enhancing power supply reliability are reduced.
Description
Technical field
The utility model relates to electric power system fault field of locating technology, particularly a kind of based on distributedPower distribution network Location Equipment for Travel Wave.
Background technology
At present, rapidly, scale strengthens day by day in electric power networks development, and the topological structure of electrical network is also more and more multipleAssorted, user is more and more higher to power supply stability requirement. Distribution network system is as last of power systemThe direct intended for end consumers of link, once break down, will directly affect users' electricity consumption reliabilityAnd power quality. Due to distribution network system, branch is many, the complicated network structure, trouble point row while breaking downLook into very difficult, if be difficult to find trouble point by pure manual type.
Because above-mentioned deficiency is necessary to develop the former based on the capable ripple of Distributed power net of a kind of new structureBarrier positioner, makes it have more the value in industry.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model be to provide one automatically, reliably based onDistributed power net Location Equipment for Travel Wave, can shorten the time of getting rid of electric network fault point, reduces warpJi is lost and is improved power supply reliability.
Distributed power distribution network Location Equipment for Travel Wave of the present utility model, comprising: the capable ripple of core-theaded type passesSensor, coaxial cable and the capable ripple positioning acquisition of Distributed power net unit; Described core-theaded type traveling wave sensorBe socketed on shell of distribution transformer earth connection and distribution transformer neutral ground line, described core-theaded type is capableWave sensor is connected by described coaxial cable with the capable ripple positioning acquisition of described Distributed power net unit.
Further, core-theaded type traveling wave sensor specifically comprises: hard wire, sample resistance, coil outputEnd, piezo-resistance, printed circuit board (PCB), the brilliant magnetic core material of circular nano and coaxial cable output, wherein,The coiling ten on the brilliant core material of described circular nano of described hard wire is enclosed, described coil output, described inSample resistance, described piezo-resistance are all welded on described printed circuit board (PCB), described coaxial cable outputConnect described coaxial cable, described sample resistance is by described coaxial cable output and described coaxial cableBe connected with the capable ripple positioning acquisition of described Distributed power net unit.
Further, the capable ripple positioner of Distributed power net comprises: data/address bus, power module is completeBall position system GPS time service unit, general packet radio service GPRS communication unit, travelling wave signal collectionUnit and travelling wave signal processing module, wherein, described power module, GPS time service unit, GPRS is logicalNews unit, travelling wave signal collecting unit and travelling wave signal processing module are connected in turn on described data/address bus.
By such scheme, the utility model at least has the following advantages: the utility model fault location standardReally, reliably, the while is easy for installation, hardware cost is low, and the scale that is applicable to is less, screen body is installed not too squareJust or there is no transformer station and a distribution network systems thereof of network communication interface.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand this practicalityNovel technological means, and can being implemented according to the content of description, below with of the present utility modelGood embodiment also coordinates accompanying drawing to be described in detail as follows.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model Distributed power net Location Equipment for Travel Wave.
Fig. 2 is the utility model Distributed power net Location Equipment for Travel Wave core-theaded type sensor usedStructural representation.
Fig. 3 is the utility model Distributed power net Location Equipment for Travel Wave core-theaded type sensor usedStructural representation.
Fig. 4 is the capable ripple of Distributed power net of the utility model Distributed power net Location Equipment for Travel WaveThe structural representation of positioning acquisition unit.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is done further to retouch in detailState. Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
Shown in Figure 1, embodiment of the present utility model is disclosed comprise the capable ripple of a kind of Distributed power net thereforeBarrier positioner, comprising: distribution transformer 1, the earthing of casing line 2 of distribution transformer, distribution transformerNeutral ground line 3, core-theaded type traveling wave sensor 4, adopt the capable ripple of coaxial cable 5 and Distributed power net locationCollection unit 6. Wherein, distribution transformer 1 and distribution transformer neutral ground line 3 are by earthing of casing line 2Carry out ground connection, core-theaded type traveling wave sensor 4 is socketed in shell of distribution transformer earth connection 2 and neutral groundOn line 3, core-theaded type traveling wave sensor 4 passes through coaxial cable with the capable ripple positioning acquisition of Distributed power net unit 65 are connected. This Distributed power net Travelling Wave Fault Location collecting unit will be adopted by GPRS wireless communication modeCollection to datagram give background data center.
As shown in Figures 2 and 3, core-theaded type traveling wave sensor has comprised: hard 11,2 sample resistances 12 of wire,Be respectively R1 and R2, coil output 13, piezo-resistance 14, is R3 in figure; Printed circuit board (PCB) 15, ringShape nanocrystalline magnetic core 16 and coaxial cable output 17. Wherein, hard wire 11 is at the brilliant magnetic core of circular nanoOn material 16, coiling ten is enclosed, and coil output 13, sample resistance 12, piezo-resistance 14 are all welded on printingOn circuit board 15, coaxial cable output 17 connecting coaxial cables 5, sample resistance 12 is defeated by coaxial cableGo out end 17 and coaxial cable 5 induced potential is passed to the capable ripple positioning acquisition of Distributed power net unit 6.
As shown in Figure 4, the capable ripple positioning acquisition of Distributed power net unit 6 has comprised: power module 61 is completeBall navigation system (GlobalPositioningSystem, GPS) time service unit 62, general grouped wirelessService (GeneralPacketRadioService, GPRS) communication unit 63, travelling wave signal collection listUnit 64 and travelling wave signal processing module 65. Travelling wave signal processing module is by field programmable gate array (FieldProgrammableGateArray, FPGA) chip and Digital Signal Processing (digitalsignalProcessing, DSP) chip. Wherein, power module 61, GPS time service unit 62, GPRS communication listUnit 63, travelling wave signal collecting unit 64 and travelling wave signal processing module 65 are connected to a data/address bus in turnOn 60. Power module is connected with transformer synthesis power distribution cabinet (JP cabinet), thereby can be that this row ripple is fixedPosition device provides electric power, and in addition, power module can also comprise a stand-by power supply (battery).
Operation principle of the present utility model is as follows: be socketed in the earth connection 2 of distribution line transformer case and joinCore-theaded type traveling wave sensor 4 on electric line transformer neutral point earth connection 3 can obtain power transmission line high-pressure sideTravelling wave signal, and send travelling wave signal to Distributed power net capable ripple positioning acquisition by coaxial cable 5Unit 6. The capable ripple positioning acquisition of Distributed power net unit 6 obtains the initial and reflection that distribution network failure producesAfter travelling wave signal, utilize travelling wave signal sampling and processing module to this circuit primary fault voltage traveling wave signalCarry out RC filtering, high frequency conversion, signal discriminating, TVS amplitude limit, use high-speed computation with reflected traveling wave signalDischarger carries out window voltage comparison, analog AC signal is changed into square-wave signal, then by this square wave letterNumber through high speed photo coupling isolation, Schmidt circuit shaping and exhibition ripple, deliver to fpga chip, by the utmost point of signalProperty and width judge whether above-mentioned travelling wave signal is fault traveling wave. Meanwhile, GPS time service unit is in real time to FPGAChip sends every pulse per second (PPS) (pulsepersecond, PPS) signal of gps system, as FGPA coreSheet carries out the time-base signal of travelling wave signal processing, and fpga chip, according to this signal, utilizes high accuracy 10M constant temperatureCrystal oscillator carries out time correction, compensation to the nanosecond counting of carrying out per second, forms final nanosecond travelling wave signalMarkers. The fault traveling wave signal after finishing dealing with and corresponding markers thereof are together sent to DSP core by FGPA chipSheet, by dsp chip to the storage of packing of this fault traveling wave signal after treatment, and by the fault after packingTravelling wave signal sends to data center of main website by GPRS communication unit, utilizes initial row ripple and reflected traveling waveThe time difference Δ t that U1, the U2 producing and U ' 1, U ' 2 signals arrive, adopts single-ended positioning principle s=(c× Δ t)/2 (s is the distance of trouble point apart from harvester, and c is row wave-wave speed, i.e. the light velocity), reaches essenceDetermine the object of position distribution network failure point. The utility model fault location is accurate, reliable, installation side simultaneouslyJust, hardware cost is low, the scale that is applicable to is less, screen body is installed not too convenient or there is no a network communicationThe transformer station of interface and distribution network systems thereof.
The operation principle of concrete core-theaded type traveling wave sensor: distribution transformer low-pressure side neutral ground lineTravelling wave current I1, through traveling wave sensor, produces induced potential (the brilliant magnetic core material of circular nano on coil 1316 for improving induction coefficient), obtain voltage U 1 through sample resistance 12, piezo-resistance 4 (R3) is restriction U1The effect of amplitude, voltage U 1 is connected to the capable ripple positioning acquisition of Distributed power net through coaxial cable output 17Unit 6, does sampling processing. Equally, shell of distribution transformer earth connection travelling wave current I2 is through another row rippleSensor produces induced potential (the brilliant magnetic core material 16 of circular nano is in order to improve induction coefficient) on coil 13,Obtain voltage U 2 through sample resistance 12, piezo-resistance 4 (R3) is the effect of restriction U2 amplitude, and U2 is through coaxialCable output end 17 is connected to the capable ripple positioning acquisition of Distributed power net unit 6, does sampling processing.
In addition, the utility model, due to based on gps clock, produces high-precise synchronization clock, makes whole systemSystem is realized data center of main website and the uniformity of Distributed power net Location Equipment for Travel Wave retention time,Can produce the synchronous effect in strange land. Adopt time difference method to position calculating, positioning precision is high, is not becomeThe impact of parameter, distribution line parameter and the systematic parameter of power station CT, PT, can meet to lightning stroke flashover,Ground connection, go offline, the accurate location of any type fault such as short, pollution flashover. Adopt the capable ripple of special core-theaded typeSensor, is socketed on the earth connection of distribution line transformer neutral point and shell, obtains line fault electricityPress row ripple. Without any direct electrical communication, there is good security with primary equipment.
The above is only preferred embodiment of the present utility model, is not limited to the utility model,It should be pointed out that for those skilled in the art, do not departing from the utility model technologyUnder the prerequisite of principle, can also make some improvement and modification, these improve and modification also should be considered as this realityWith novel protection domain.
Claims (5)
1. a Distributed power net Location Equipment for Travel Wave, is characterized in that: the capable ripple sensing of core-theaded typeDevice, coaxial cable and the capable ripple positioning acquisition of Distributed power net unit; Described core-theaded type traveling wave sensor coverBe connected on shell of distribution transformer earth connection and distribution transformer neutral ground line the capable ripple of described core-theaded typeSensor is connected by described coaxial cable with the capable ripple positioning acquisition of described Distributed power net unit.
2. Distributed power net Location Equipment for Travel Wave according to claim 1, is characterized in that,Described core-theaded type traveling wave sensor specifically comprises: hard wire, sample resistance, coil output, pressure-sensitive electricityResistance, printed circuit board (PCB), the brilliant magnetic core material of circular nano and coaxial cable output, wherein, described hard wireOn the brilliant core material of described circular nano, coiling ten is enclosed, described coil output, described sample resistance,Described piezo-resistance is all welded on described printed circuit board (PCB), and described coaxial cable output connects described sameShaft cable, described sample resistance is by described coaxial cable output and described coaxial cable and described distributionThe capable ripple positioning acquisition of formula power distribution network unit is connected.
3. Distributed power net Location Equipment for Travel Wave according to claim 1, is characterized in that,The capable ripple positioning acquisition of described Distributed power net unit comprises: data/address bus, power module, global locationSystem GPS time service unit, general packet radio service GPRS communication unit, travelling wave signal collecting unit andTravelling wave signal processing module, wherein, described power module, described GPS time service unit, described GPRS is logicalNews unit, described travelling wave signal collecting unit and described travelling wave signal processing module are connected to described number in turnIn bus.
4. Distributed power net Location Equipment for Travel Wave according to claim 3, is characterized in that,Described power module is connected with the comprehensive distribution cabinet of transformer.
5. Distributed power net Location Equipment for Travel Wave according to claim 3, is characterized in that,Described travelling wave signal processing module comprises field programmable gate array chip and digital signal processing chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620003822.XU CN205301497U (en) | 2016-01-02 | 2016-01-02 | Based on distributed distribution network travelling wave fault locating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620003822.XU CN205301497U (en) | 2016-01-02 | 2016-01-02 | Based on distributed distribution network travelling wave fault locating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205301497U true CN205301497U (en) | 2016-06-08 |
Family
ID=56485738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620003822.XU Expired - Fee Related CN205301497U (en) | 2016-01-02 | 2016-01-02 | Based on distributed distribution network travelling wave fault locating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205301497U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375063A (en) * | 2018-11-26 | 2019-02-22 | 广东电网有限责任公司 | Fault traveling wave signal coupling sensor for online fault location device |
-
2016
- 2016-01-02 CN CN201620003822.XU patent/CN205301497U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375063A (en) * | 2018-11-26 | 2019-02-22 | 广东电网有限责任公司 | Fault traveling wave signal coupling sensor for online fault location device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110221180B (en) | 10kV distribution line lightning stroke fault recognition and positioning method | |
| CN102565628B (en) | Method for identifying properties of lightning faults of overhead line on basis of amplitude interval distribution of lightning current | |
| CN203350392U (en) | Fault locating system for high tension transmission line | |
| CN102928741A (en) | Satellite time synchronization based electric power line fault location system and method | |
| CN203241505U (en) | Portable cable insulation live detector and locator | |
| CN101923137A (en) | Single-phase ground fault line selecting method of small-electric current grounding system | |
| CN202443070U (en) | Grounding resistance test locating system | |
| CN102175923A (en) | Transmission line dynamic loss measurement system and method | |
| CN201697994U (en) | Small-current grounding system single-phase earth fault line selection device | |
| CN109738763A (en) | A kind of medium-voltage distribution cable short trouble localization method based on wavelet package transforms | |
| CN110470936A (en) | A kind of leakage conductor testing current in resistance property method and device | |
| CN204495898U (en) | A kind of transformer superpotential on-line monitoring system | |
| CN109444657A (en) | A kind of power distribution network high resistance earthing fault Section Location | |
| CN103149503A (en) | Fault location method for triangular looped network | |
| CN102735988B (en) | One-phase earthing failure in electric distribution network localization method | |
| WO2017161630A1 (en) | Small-region lightning monitoring and positioning method and system | |
| CN103760460A (en) | Bergeron model-based high-voltage direct-current earth electrode line time-domain fault range finding method | |
| CN205301497U (en) | Based on distributed distribution network travelling wave fault locating device | |
| CN207833026U (en) | A kind of ultra-high-tension power transmission line based on Big Dipper location technology waves monitoring system | |
| CN106680668A (en) | Power distribution network single-phase earth fault on-line monitoring and positioning system | |
| CN203825142U (en) | Power supply line fault locating instrument | |
| CN103592572A (en) | Method for direct current grounding electrode line fault distance measurement through intersecting line positioning of direct current component and harmonic component | |
| CN201269915Y (en) | Travelling wave positioning apparatus for electricity grid failure | |
| CN104280665A (en) | Fault detecting system for power distribution network and detecting method thereof | |
| CN106950462A (en) | The fault identification and location equipment of a kind of transmission line of electricity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160608 Termination date: 20180102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |