CN207148258U - System for detecting leakage current of zinc oxide arrester - Google Patents
System for detecting leakage current of zinc oxide arrester Download PDFInfo
- Publication number
- CN207148258U CN207148258U CN201721149997.2U CN201721149997U CN207148258U CN 207148258 U CN207148258 U CN 207148258U CN 201721149997 U CN201721149997 U CN 201721149997U CN 207148258 U CN207148258 U CN 207148258U
- Authority
- CN
- China
- Prior art keywords
- analog
- leakage current
- zinc
- digital converter
- output end
- 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.)
- Active
Links
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 45
- 239000000523 sample Substances 0.000 claims abstract description 32
- 229960001296 zinc oxide Drugs 0.000 claims description 22
- 239000013307 optical fiber Substances 0.000 claims description 10
- 230000009466 transformation Effects 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 5
- 230000005672 electromagnetic field Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model belongs to the technical field of high-voltage equipment detects, a system for detecting zinc oxide arrester leakage current is related to, including test probe, test probe is equipped with electromagnetic unit, analog-to-digital converter, digital signal isolating device, and electromagnetic unit's output is connected with analog-to-digital converter's input, and analog-to-digital converter's output is connected with digital signal isolating device's input, and digital signal isolating device's output is connected with the one end of optic fibre, and the other end and the input of receiving terminal of optic fibre are connected. The problems of low precision, serious interference and inaccurate detection of a detection device in the prior art are solved.
Description
Technical field
The utility model belongs to high-voltage test technical field, is related to a kind of detection Leakage Current of Zinc-oxide Lightning Arresters
System.
Background technology
Zinc-Oxide Arrester turns into most important in power system because it has excellent nonlinear characteristic and conveyance capacity
Overvoltage protective device, it is formed by stacking by zinc oxide resistance sheet, more and more with quantity, therefore zinc oxide is taken shelter from the thunder
The preventive trial of device is also increasingly paid attention to.The core component of Zinc-Oxide Arrester is zinc oxide resistance sheet, and operating oxygen
Change zinc arrester leakage current be present, due to the resistive component of Leakage Current of Zinc-oxide Lightning Arresters be cause resistor disc deteriorate master
Want factor, it is therefore desirable to the size of periodic detection Leakage Current of Zinc-oxide Lightning Arresters, so as to judge that resistor disc whether there is in time
Deterioration condition.Because operation Zinc-Oxide Arrester is in electromagnetic field intensity environment, the detection means of conventional leakage current of an arrester
Poor anti jamming capability, also part arrester Leakage Current detecting system are taken the mode being wirelessly transferred to transmit data, are subject to
Influence just more greatly, to cause the leakage current numerical value of detection inaccurate.Arrester Leakage Current belongs to small-signal, and existing electric current is adopted
The current analog signal that collection probe obtains is by cable transmission, because capacity effect be present in cable, current signal can phase shift and decay,
Cause current phase to change with the degree of accuracy to decline, influence data testing accuracy and accuracy.
The content of the invention
The utility model is the above-mentioned at least one technological deficiency of solution, there is provided one kind detection Zinc-Oxide Arrester leakage electricity
The system of stream, solves in the prior art that detection means precision to be present not high, serious interference, detects the problem of inaccurate.
The technical solution of the utility model is：A kind of system for detecting Leakage Current of Zinc-oxide Lightning Arresters, including detection are visited
Head, detection probe are provided with electromagnetic unit, analog-digital converter, data signal isolating device, and output end and the modulus of electromagnetic unit turn
The input connection of parallel operation, the output end of analog-digital converter is connected with the input of data signal isolating device, data signal every
Connected from the output end of device and one end of optical fiber, the other end of optical fiber and the input of receiving terminal connect.
Detection probe employs the design philosophy of integration, and electromagnetic unit, analog-digital converter and digital signal isolation are filled
Put and be integrated into detection probe, greatly reduce analog signal and be lost in transmitting procedure, in addition, detection probe and receiving terminal
Between using optical fiber carry out signal transmission, declined so as to avoid phase displacement error and signal of the current analog signal in cable transmission
Subtract error, eliminate the electromagnetic interference of external electromagnetic field, it is ensured that the Leakage Current data received by receiving terminal have high-precision
Degree and high accuracy.
Further, detection probe is provided with radome, and electromagnetic unit, analog-digital converter and digital signal isolating device are built in
Radome.Detection probe internal electron unit is interfered provided with radome isolation foreign current.
Further, radome is radome made of metal material, and the effect for disturbing isolation is more preferable.
Further, detection probe is provided with analog signal amplifier, the input of analog signal amplifier and electromagnetic unit
Output end connects, and the output end of analog signal amplifier and the input of analog-digital converter connect.The analog signal of electromagnetic unit
It is transferred to analog signal amplifier to be amplified, the analog signal after amplification is transferred to analog-digital converter and is converted to digital letter again
Number, to prevent causing the distortion of signal in transmitting procedure and strengthening the efficiency of transmission of signal.
Further, detection probe is provided with discharge tube, and discharge tube amplifies with the output end and analog signal of electromagnetic unit respectively
The input connection of device.Transmission of the discharge tube to analog signal has a more preferable effect, strong antijamming capability, and speed is fast.
Further, detection probe is provided with digital signal processor, the input and analog-digital converter of digital signal processor
Output end connection, the output end of digital signal processor is connected with data signal isolating device.By the numeral of analog-digital converter
After signal is transferred to digital signal processor, digital signal processor screens effective data signal, then is transmitted to numeral
Signal isolating device, data signal isolating device convert digital signals into optical signal, strong antijamming capability.
Further, electromagnetic unit uses current transformer.Using current transformer, the high current of electromagnetic unit is converted to
Low current, protect the circuit element in detection probe.
Further, the transformation ratio of current transformer is 1000:1.The transformation ratio used is 1000:1 current transformer, will
The high current of electromagnetic unit is converted to low current, protects the circuit element in detection probe.
Further, the end connector of optical fiber two is general type joint.General type joint, cost is small, easy for installation.
The beneficial effects of the utility model are：
（1）Detection probe employs the design philosophy of integration, by electromagnetic unit, analog signal amplifier, analog-to-digital conversion
Device, digital signal processor and digital signal isolating device circuit are integrated into detection probe, are greatly reduced analog signal and are existed
It is lost in transmitting procedure.
（2）Optical signal transmission is carried out using optical fiber between detection probe and receiving terminal, current analog signal is avoided and exists
Phase displacement error and signal attenuation error in cable transmission, eliminate the electromagnetic interference of external electromagnetic field, it is ensured that receiving terminal institute
The Leakage Current data received have high accuracy and high accuracy.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
The mark meaning of accompanying drawing is as follows：
1 detection probe, 2 optical fiber, 3 receiving terminals, 10 electromagnetic units, 13 analog signal amplifiers, 11 analog-digital converters,
15 digital signal processors, 12 data signal isolating devices, 14 discharge tubes.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；It is attached in order to more preferably illustrate the present embodiment
Scheme some parts to have omission, zoom in or out, do not represent the size of actual product；To those skilled in the art,
Some known features and its explanation may be omitted and will be understood by accompanying drawing.Being given for example only property of position relationship described in accompanying drawing
Explanation, it is impossible to be interpreted as the limitation to this patent.
Embodiment 1：
As shown in figure 1, a kind of system for detecting Leakage Current of Zinc-oxide Lightning Arresters, including detection probe 1, detection probe 1
Provided with electromagnetic unit 10, the analog signal of electromagnetic unit 10 is transferred to analog signal amplifier 13 by discharge tube 14 and put
Greatly, the analog signal after amplification is transferred to analog-digital converter 11 and is converted to data signal, the data signal of analog-digital converter 11 again
After being transferred to digital signal processor 15, digital signal processor 15 screens effective data signal, then is transmitted to numeral
Signal isolating device 12, data signal isolating device 12 convert digital signals into optical signal, and final detection probe 1 is by optical signal
Optical fiber 2 is transferred to, receiving terminal 3 is uploaded to using optical fiber 2.
Detection probe 1 employ integration design philosophy, by electromagnetic unit 10, analog-digital converter 11 and data signal every
It is integrated into from device 12 in detection probe 1, greatly reduces analog signal and be lost in transmitting procedure, avoids current analog letter
Phase displacement error and signal attenuation error number in cable transmission, eliminate the electromagnetic interference of external electromagnetic field, it is ensured that receive eventually
Leakage Current data received by end 3 have high accuracy and high accuracy.
Embodiment 2：
Detection probe 1 is provided with radome, and electromagnetic unit 10, analog-digital converter 11 and digital signal isolating device 12 are built in
Radome, radome are radome made of metal material.Provided with metallic shield completely cut off foreign current to detection probe 1 inside
Electronic unit interferes, and ensures the accuracy and accuracy of signal transmission.
Embodiment 3：
Electromagnetic unit 10 uses current transformer, and the transformation ratio of current transformer is 1000:1., will using current transformer
The high current of electromagnetic unit 10 is converted to low current, protects the circuit element in detection probe 1.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.All made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., should be included in
Within the protection domain of the utility model claims.
Claims (9)
1. a kind of system for detecting Leakage Current of Zinc-oxide Lightning Arresters, it is characterised in that including detection probe（1）, the detection
Probe（1）Provided with electromagnetic unit（10）, analog-digital converter（11）, data signal isolating device（12）, the electromagnetic unit（10）
Output end and analog-digital converter（11）Input connection, the analog-digital converter（11）Output end isolate with data signal
Device（12）Input connection, the data signal isolating device（12）Output end and optical fiber（2）One end connection, it is described
Optical fiber（2）The other end and receiving terminal（3）Input connection.
2. the system of a kind of detection Leakage Current of Zinc-oxide Lightning Arresters according to claim 1, it is characterised in that described
Detection probe（1）Provided with radome, the electromagnetic unit（10）, analog-digital converter（11）With digital signal isolating device（12）It is interior
It is placed in radome.
3. the system of a kind of detection Leakage Current of Zinc-oxide Lightning Arresters according to claim 2, it is characterised in that described
Radome is radome made of metal material.
4. the system of a kind of detection Leakage Current of Zinc-oxide Lightning Arresters according to claim 1, it is characterised in that described
Detection probe（1）Provided with analog signal amplifier（13）, the analog signal amplifier（13）Input and electromagnetic unit
（10）Output end connection, the analog signal amplifier（13）Output end and analog-digital converter（11）Input connection.
5. the system of a kind of detection Leakage Current of Zinc-oxide Lightning Arresters according to claim 4, it is characterised in that described
Detection probe（1）Provided with discharge tube（14）, the discharge tube（14）Respectively with electromagnetic unit（10）Output end and analog signal
Amplifier（13）Input connection.
6. the system of a kind of detection Leakage Current of Zinc-oxide Lightning Arresters according to claim 1, it is characterised in that described
Detection probe is provided with digital signal processor（15）, the digital signal processor（15）Input and analog-digital converter（11）
Output end connection, the digital signal processor（15）Output end and data signal isolating device（12）Connection.
7. the system of a kind of detection Leakage Current of Zinc-oxide Lightning Arresters according to claim 1, it is characterised in that described
Electromagnetic unit（10）Using current transformer.
8. the system of a kind of detection Leakage Current of Zinc-oxide Lightning Arresters according to claim 7, it is characterised in that described
The transformation ratio of current transformer is 1000:1.
A kind of 9. system for detecting Leakage Current of Zinc-oxide Lightning Arresters according to claim 1, it is characterised in that the light
It is fine（2）Two end connectors use general type joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149997.2U CN207148258U (en) | 2017-09-08 | 2017-09-08 | System for detecting leakage current of zinc oxide arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149997.2U CN207148258U (en) | 2017-09-08 | 2017-09-08 | System for detecting leakage current of zinc oxide arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207148258U true CN207148258U (en) | 2018-03-27 |
Family
ID=61678014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721149997.2U Active CN207148258U (en) | 2017-09-08 | 2017-09-08 | System for detecting leakage current of zinc oxide arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207148258U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525998A (en) * | 2017-09-08 | 2017-12-29 | 广东电网有限责任公司东莞供电局 | System and method for detecting leakage current of zinc oxide arrester |
| CN110196350A (en) * | 2019-05-17 | 2019-09-03 | 国网陕西省电力公司电力科学研究院 | Bottom shielding of bushing earthing or grounding means, leakage current collection system and method |
-
2017
- 2017-09-08 CN CN201721149997.2U patent/CN207148258U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525998A (en) * | 2017-09-08 | 2017-12-29 | 广东电网有限责任公司东莞供电局 | System and method for detecting leakage current of zinc oxide arrester |
| CN110196350A (en) * | 2019-05-17 | 2019-09-03 | 国网陕西省电力公司电力科学研究院 | Bottom shielding of bushing earthing or grounding means, leakage current collection system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102435812B (en) | Insulator leakage current collecting ring and insulator leakage current collecting device | |
| CN207148258U (en) | System for detecting leakage current of zinc oxide arrester | |
| CN101533049B (en) | Current radiation transmitting device for measuring cable | |
| US12007427B2 (en) | Electrical circuit | |
| CN102288850A (en) | Zinc oxide arrester monitoring device | |
| CN201820625U (en) | Electronic voltage transformer | |
| CN103592497A (en) | Broadband voltage collector | |
| CN203551641U (en) | Broadband voltage collector | |
| CN205193214U (en) | Insulator ultraviolet impulse detection test device | |
| CN201413377Y (en) | Leakage current detection device for insulating device | |
| CN108732475B (en) | Detection device for corona discharge of power transmission line | |
| CN204241671U (en) | Broadband transient transcendence measurement mechanism | |
| CN107525998A (en) | System and method for detecting leakage current of zinc oxide arrester | |
| CN203688651U (en) | Current sampling and protecting circuit for electronic current transformer | |
| CN103412195B (en) | A kind of AMRS for detecting thunder and lightning environment and method | |
| CN105301432A (en) | Electric power equipment insulation leakage current on-line monitoring circuit | |
| CN105510678A (en) | Novel alternative current high voltage acquisition circuit | |
| CN206209033U (en) | leakage current detection probe and leakage current detection system | |
| CN102281036A (en) | Standing-wave ratio detection and high-power protection circuit with self-adaptive control | |
| CN110632375A (en) | Differential residual current detection method | |
| CN102841245A (en) | Device for detecting end screen current parameter of high-voltage transformer bushing in real time, and control method for device | |
| CN115754585A (en) | High-frequency current sensing acquisition unit adopting demagnetization technology | |
| CN214750773U (en) | Broadband magnetic field sensor for measuring impulse current | |
| CN111579951B (en) | Direct-current cable discharge detection device and detection method | |
| JP5324079B2 (en) | Neutron monitoring system for nuclear power plants |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |