CN207020271U - A kind of failure wave-recording type integration fault isolation device - Google Patents
A kind of failure wave-recording type integration fault isolation device Download PDFInfo
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- CN207020271U CN207020271U CN201720795391.XU CN201720795391U CN207020271U CN 207020271 U CN207020271 U CN 207020271U CN 201720795391 U CN201720795391 U CN 201720795391U CN 207020271 U CN207020271 U CN 207020271U
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- 238000002955 isolation Methods 0.000 title claims abstract description 17
- 230000010354 integration Effects 0.000 title claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000008033 biological extinction Effects 0.000 claims abstract description 4
- 238000004146 energy storage Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 15
- 238000013461 design Methods 0.000 claims description 7
- 230000006870 function Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000009711 regulatory function Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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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
Abstract
A kind of failure wave-recording type integration fault isolation device, including vacuum circuit breaker（1）, cable connectors（2）And front-end acquisition device（3）；Cable connectors one end is connected with front-end acquisition device；The electronic type voltage current transformer of the cable connectors other end and vacuum circuit breaker connects.The vacuum circuit breaker, including extended type base, three-phase vacuum extinction chamber device, electronic type voltage current transformer and spring energy-storage operating mechanism, in addition to the intelligent controller for being controlled to vacuum circuit breaker, and for taking a high-voltage capacitance of energy.The electronic type voltage transformer is made up of resitstance voltage divider, transmission unit and signal processing unit.The utility model can improve device sample frequency and sampling precision, precisely catch short circuit, earth fault moment, collection three-phase voltage, three-phase current, residual voltage, zero-sequence current and position of the switch information.The utility model apparatus structure is simple, applicable, can be the original foundation of offer of accident analysis.
Description
Technical field
A kind of failure wave-recording type integration fault isolation device is the utility model is related to, belongs to distribution O＆M technical field.
Background technology
With socio-economic development and the continuous improvement of living standards of the people, requirement of the user to power supply reliability is increasingly
Height, and power distribution network is the power network link being joined directly together with user, it is present, and multi-point and wide-ranging, the method for operation is changeable, Frequent Troubles etc.
Feature, in order to improve distribution network reliability, all kinds of Distribution Automation Technologies, terminal device come into operation in succession, main work(
Fault Isolation, load monitoring, long-range divide-shut brake, fault location etc. can be included.
At this stage, fault wave recording device has all been installed in many 110kV and more than 220kV in China load-center substation, passes through
A series of electric network faults such as fault section location, the identification of failure original paper are carried out with reference to relay protection, fault recorder data information to examine
It is disconnected, help operation maintenance personnel quickly to analyze, search and fix a breakdown.
It is more perfect as the automation development of elementary cell using transformer station, possess the functions such as accident analysis, but using feeder line as
Only possess simple feeder automation function during elementary cell, Fault Isolation can be effectively carried out when failure occurs, is but difficult for
Accident analysis provides effective initial data, and initial data can not be especially provided in terms of the single-phase-to-earth fault analysis that distribution line takes place frequently
Waveform, and then cause ground connection judgment accuracy low.
The failure of power distribution network more than 70% is singlephase earth fault, and China grounding Method overwhelming majority is
Non-effective earthing mode, i.e. isolated neutral or through grounding through arc, occur fault-current signal during singlephase earth fault
It is faint and larger by ectocine, it is not easy accurately to obtain.Especially inductance electricity during earth fault occurs for arc suppression coil earthing system
The compensating action of stream make it that characteristic quantity is extremely faint, and conventional failure determination strategy is no longer applicable, therefore under different Contact patch
Earth fault line selection and FLT are always the focus and difficult point of power distribution network relay protection field research.
The content of the invention
The purpose of this utility model is to judge that the utility model proposes one kind the problem of presence for singlephase earth fault
Failure wave-recording type integration fault isolation device.
The technical solution of the utility model is as follows, and a kind of failure wave-recording type integration fault isolation device is set using integration
Meter theory, by first and second equipment Combined design；Described device includes vacuum circuit breaker, cable connectors and front-end acquisition device；
Cable connectors one end is connected with front-end acquisition device secondary device；The electronic type of the cable connectors other end and vacuum circuit breaker
Voltage current transformer connects.
The vacuum circuit breaker, including extended type base, three-phase vacuum extinction chamber device, electronic type voltage current transformer
With spring energy-storage operating mechanism, in addition to for the intelligent controller that is controlled to vacuum circuit breaker, and for take can
One high-voltage capacitance.
The front-end acquisition device uses Miniaturization Design, and plant bulk is 320 × 220 × 85mm；The front-end collection
Device includes high frequency sampling module, A/D sampling modules and communication circuit module；In real time collection circuit three-phase current, three-phase voltage,
Residual voltage, zero-sequence current and circuit breaker switch state, fault moment is stored when short circuit, earth fault occur for distribution line
Initial data waveform, and with Standard File Format uploading system carry out waveform analysis.
The electronic type voltage transformer is made up of resitstance voltage divider, transmission unit and signal processing unit；Electric resistance partial pressure
Device is converted to small voltage signal output by primary voltage is proportional as sensor head, mainly；Transmission unit exports divider
Signal is delivered to signal processing unit, while realizes outside electromagnetic interference function of shielding；Signal processing unit is by voltage follow, phase
Position compensation and proportion adjustment circuit composition, realize the impedance conversion, phase compensation and amplitude regulatory function of voltage transformer.
The electronic current mutual inductor measurement and protection share a low-power coil, under larger primary current not
Saturation can be produced, while required precision can be ensured, and the no-load voltage ratio of transformer need not be adjusted in actual motion.
The electronic type voltage current transformer, can directly gather 10kV distribution lines three-phase voltage, three-phase current and
Position of the switch information, and residual voltage, zero-sequence current are directly synthesized by front-end acquisition device.
The communication circuit module is GPRS/APN wireless communication modules, and DL/T634.5104- is used with master station communication
2009 stipulations, main station system can will will be delivered in recorded wave file by the stipulations.
The beneficial effects of the utility model are：The utility model device uses integrated design theory, by first and second equipment
Combined design, the front-end acquisition device of the vacuum circuit breaker of integrated energy taking device, cable connectors and high sample frequency is formed
Integrated fault isolation device.Wherein energy taking device is integrated in breaker body, without individually lifting, reduces on-site installation work
Amount；Cable connectors plug and play, and the application of electronic mutual inductor eliminates CT no-load voltage ratio governing loops, reduces field connection work
Measure and error probability；Front-end acquisition device precisely catches short circuit, ground connection event by improving device sample frequency and sampling precision
Hinder the moment, completely preserve voltage x current original waveform when short circuit, earth fault, three-phase voltage, three-phase current, zero can be gathered
Sequence voltage, zero-sequence current and position of the switch information etc., in this, as the foundation of accident analysis.The utility model device is according to electric current
It is of different sizes gather original waveform using measuring loop or protective loop, effectively eliminated zero drift phenomenon.This practicality is new
Type device uses GPRS radio communications, Maintenance free communication channel, and infield is low to communication equipment dependence, fitting limit
Broad covered area.The utility model device is using miniaturization, low power dissipation design, and simple in construction, in-site installation is convenient, strong applicability.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model device；
In figure, 1 is vacuum circuit breaker；2 be cable connectors；3 be front-end acquisition device.
Embodiment
Specific embodiment of the present utility model is as shown in Figure 1.
A kind of failure wave-recording type integration fault isolation device of the present embodiment, including vacuum circuit breaker 1, cable connectors 2
With front-end acquisition device 3.One end of cable connectors is connected with front-end acquisition device 3；The cable connectors other end breaks with vacuum
The electronic type voltage current transformer connection of road device 1.
Vacuum circuit breaker in the present embodiment, including extended type base, three-phase vacuum extinction chamber device, electronic type voltage electricity
Current transformer and spring energy-storage operating mechanism, in addition to the intelligent controller for being controlled to vacuum circuit breaker, Yi Jiyong
In a high-voltage capacitance for taking energy.
Front-end acquisition device in the present embodiment uses Miniaturization Design, and plant bulk is 320 × 220 × 85mm；It is described
Front-end acquisition device includes high frequency sampling module, A/D sampling modules and communication circuit module；Real-time collection circuit three-phase current,
Three-phase voltage, residual voltage, zero-sequence current and circuit breaker switch state, deposited when short circuit, earth fault occur for distribution line
The initial data waveform of fault moment is stored up, and waveform analysis is carried out with Standard File Format uploading system.
Electronic type voltage transformer in the present embodiment in vacuum circuit breaker is by resitstance voltage divider, transmission unit and signal
Manage unit composition；Resitstance voltage divider is converted to small voltage signal output by primary voltage is proportional as sensor head, mainly；Pass
Divider output signal is delivered to signal processing unit by defeated unit, while realizes outside electromagnetic interference function of shielding；At signal
Reason unit is made up of voltage follow, phase compensation and proportion adjustment circuit, realizes impedance conversion, the phase compensation of voltage transformer
With amplitude regulatory function.
Electronic current mutual inductor measures and protection shares a low-power coil, will not under very high primary current
Produce saturation, at the same can high-precision measurement short circuit current, and the no-load voltage ratio of transformer need not be adjusted in actual motion.
Electronic type voltage current transformer, it can directly gather 10kV distribution lines three-phase voltage, three-phase current and switch
Positional information, and residual voltage, zero-sequence current are directly synthesized by front-end acquisition device.
Communication circuit module in front-end acquisition device is GPRS/APN wireless communication modules, and DL/ is used with master station communication
T634.5104-2009 stipulations, main station system can will will be delivered in recorded wave file by the stipulations.
Claims (7)
1. a kind of failure wave-recording type integration fault isolation device, it is characterised in that described device includes vacuum circuit breaker, cable
Connector and front-end acquisition device；Cable connectors one end is connected with front-end acquisition device；The cable connectors other end and vacuum
The electronic type voltage current transformer connection of breaker.
A kind of 2. failure wave-recording type integration fault isolation device according to claim 1, it is characterised in that the vacuum
Breaker, including extended type base, three-phase vacuum extinction chamber device, electronic type voltage current transformer and spring energy-storage operation machine
Structure, in addition to the intelligent controller for being controlled to vacuum circuit breaker, and for taking a high-voltage capacitance of energy.
A kind of 3. failure wave-recording type integration fault isolation device according to claim 1, it is characterised in that the front end
Harvester uses Miniaturization Design, and plant bulk is 320 × 220 × 85mm；The front-end acquisition device includes high frequency sampling
Module, A/D sampling modules and communication circuit module；Collection circuit three-phase current, three-phase voltage, residual voltage, zero sequence electricity in real time
Stream and circuit breaker switch state, the initial data waveform of fault moment is stored when short circuit, earth fault occur for distribution line,
And waveform analysis is carried out with Standard File Format uploading system.
A kind of 4. failure wave-recording type integration fault isolation device according to claim 2, it is characterised in that the electronics
Formula voltage transformer is made up of resitstance voltage divider, transmission unit and signal processing unit；Resitstance voltage divider is main as sensor head
Small voltage signal output is converted to by primary voltage is proportional；Divider output signal is delivered to signal transacting by transmission unit
Unit, while realize outside electromagnetic interference function of shielding；Signal processing unit is by voltage follow, phase compensation and proportion adjustment electricity
Road forms, and realizes the impedance conversion, phase compensation and amplitude regulatory function of voltage transformer.
A kind of 5. failure wave-recording type integration fault isolation device according to claim 2, it is characterised in that the electronics
Formula current transformer measures and protection shares a low-power coil, saturation will not be produced under very high primary current, together
When can high-precision measurement short circuit current, and the no-load voltage ratio of transformer need not be adjusted in actual motion.
A kind of 6. failure wave-recording type integration fault isolation device according to claim 2, it is characterised in that the electronics
Formula voltage current transformer, 10kV distribution lines three-phase voltage, three-phase current and position of the switch information can be directly gathered, and led to
Cross front-end acquisition device and directly synthesize residual voltage, zero-sequence current.
A kind of 7. failure wave-recording type integration fault isolation device according to claim 3, it is characterised in that the communication
Circuit module is GPRS/APN wireless communication modules, uses DL/T634.5104-2009 stipulations with master station communication, passes through the stipulations
Main station system can will be delivered in recorded wave file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720795391.XU CN207020271U (en) | 2017-07-04 | 2017-07-04 | A kind of failure wave-recording type integration fault isolation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720795391.XU CN207020271U (en) | 2017-07-04 | 2017-07-04 | A kind of failure wave-recording type integration fault isolation device |
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| CN207020271U true CN207020271U (en) | 2018-02-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853989A (en) * | 2019-11-12 | 2020-02-28 | 国网新疆电力有限公司经济技术研究院 | 10kV three-phase synthetic voltage and current integrated sensor self-energy-taking circuit breaker |
-
2017
- 2017-07-04 CN CN201720795391.XU patent/CN207020271U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853989A (en) * | 2019-11-12 | 2020-02-28 | 国网新疆电力有限公司经济技术研究院 | 10kV three-phase synthetic voltage and current integrated sensor self-energy-taking circuit breaker |
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