CN107741518A - A kind of cable shaft earth current test device of more opening joint testing currents - Google Patents
A kind of cable shaft earth current test device of more opening joint testing currents Download PDFInfo
- Publication number
- CN107741518A CN107741518A CN201711131666.0A CN201711131666A CN107741518A CN 107741518 A CN107741518 A CN 107741518A CN 201711131666 A CN201711131666 A CN 201711131666A CN 107741518 A CN107741518 A CN 107741518A
- Authority
- CN
- China
- Prior art keywords
- opening
- iron core
- cable shaft
- joint
- earth current
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/186—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using current transformers with a core consisting of two or more parts, e.g. clamp-on type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
Abstract
The present invention provides a kind of cable shaft earth current test device of more opening joint testing currents, including more opening joint current transformers and data acquisition dispensing device.Described more openings joint current transformer includes core portion and coiler part, core portion is formed in parallel by multiple opening circular iron core rings with multiple isolated insulation circular layer intervals, iron core ring after parallel connection forms tubbiness, coiler part includes the multiple coils for being uniformly wound on multiple opening circular iron core ring outer ends, the corresponding opening circular iron core ring of a coil.A kind of current transformer using the different iron core ring group of multiple openings into iron core, coil voltage is produced under the circuit function of current because opening acts on, and iron core opening is different make it that caused voltage is different under different electric currents.So as to calculate earth current.Device realizes the Electricity Federation earth current test under cable shaft by wireless transmission.Solves the problem undetectable greatly of earth current excursion in original cable shaft.
Description
Technical field
The present invention relates to current detecting and transmission line faultlocating technical field, more particularly to a kind of more opening joint electric currents are surveyed
The cable shaft earth current test device of examination.
Background technology
Transmission line of electricity online measuring technique is the technical method risen in recent years, and it is (special that it is intended to on-line checking transmission line of electricity
It is not high pressure and super-pressure) running status of circuit, improves power supply reliability.Examined by the every of development overhead transmission line for many years
Survey has all formed product, and the checking for grounded current in cable shaft is always a blank.For the ground connection electricity in cable shaft
Its excursion is a problem of reality is present greatly for stream, how a kind of the use of the electric current of transformer detection wide scope to be one
Problem.
The content of the invention
In order to solve problem described in background technology, the present invention provides a kind of cable shaft of more opening joint testing currents and connect
Earth-current test device, using the different iron core ring group of multiple openings into a kind of current transformer of iron core, make in line current
Coil voltage is produced because opening acts under, iron core opening is different make it that caused voltage is different under different electric currents.So as to count
Calculate earth current.Device realizes the Electricity Federation earth current test under cable shaft by wireless transmission.Solves original cable shaft
Interior earth current excursion problem undetectable greatly.This invention is with installation and easy to make, and it is easy to change, and investment is low,
The features such as service life is long.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of cable shaft earth current test device of more opening joint testing currents, including more opening joint Current Mutual Inductances
Device and data acquisition dispensing device.
Described more openings joint current transformer includes core portion and coiler part, and core portion is by multiple open circles
Shape iron core ring is formed in parallel with multiple isolated insulation circular layer intervals, and the iron core ring after parallel connection forms tubbiness, and coiler part includes equal
The even multiple coils for being wound on multiple opening circular iron core ring outer ends, the corresponding opening circular iron core ring of a coil.
The opening scaled down of described multiple opening circular iron core rings, diminution ratio value are 1/2-2/3.
The signal output part connection data acquisition of multiple coils of described more openings joint current transformer is sent
Device, the voltage data of multiple coils is transmitted wirelessly by data acquisition dispensing device.
Described data acquisition dispensing device is monolithic processor control device, including single-chip microprocessor MCU and is attached thereto
A/D conversion chips and WIFI communication chip, the input of A/D conversion chips connect more opening joint electricity by control source port
The signal output part of multiple coils of current transformer.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the cable shaft earth current test device of a kind of more opening joint testing currents of the invention, using multiple openings
Different iron core ring groups produces coil electricity under the circuit function of current into a kind of current transformer of iron core because opening acts on
Pressure, iron core opening is different make it that caused voltage is different under different electric currents.So as to calculate earth current.Solves original cable
Earth current excursion problem undetectable greatly in well.This invention is with installation and easy to make, and it is easy to change, investment
It is low, the features such as service life is long.
2nd, the cable shaft earth current test device of a kind of more opening joint testing currents of the invention, device passes through wireless
Send, realize the Electricity Federation earth current test under cable shaft.
Brief description of the drawings
Fig. 1 is a kind of more openings connection of the cable shaft earth current test device of more opening joint testing currents of the present invention
Close the structural representation of current transformer；
Fig. 2 is a kind of wireless data of the cable shaft earth current test device of more opening joint testing currents of the present invention
Gather the external connection structure schematic diagram of dispensing device；
Fig. 3 is a kind of wireless data of the cable shaft earth current test device of more opening joint testing currents of the present invention
Gather the internal structure schematic diagram of dispensing device.
Wherein：More opening circular iron core ring 2- isolated insulation circular layer 3- coils of 1-
Embodiment
Embodiment provided by the invention is described in detail below in conjunction with accompanying drawing.
As shown in figure 1, a kind of cable shaft earth current test device of more opening joint testing currents, including more opening connection
Close current transformer and data acquisition dispensing device.
Described more openings joint current transformer includes core portion and coiler part, and core portion is by multiple open circles
Shape iron core ring 1 is formed in parallel with multiple isolated insulation circular layers 2 interval, and the iron core ring after parallel connection forms tubbiness, and coiler part includes
Uniformly it is wound on multiple coils 3 of multiple opening circular iron core ring outer ends, the corresponding opening circular iron core ring 1 of a coil 3.
The opening scaled down of described multiple opening circular iron core rings 1, diminution ratio value are 1/2-2/3.
The signal output part connection data acquisition of multiple coils 3 of described more openings joint current transformer is sent
Device, the voltage data of multiple coils is transmitted wirelessly by data acquisition dispensing device.
As shown in Figure 2,3, described data acquisition dispensing device is monolithic processor control device, including single-chip microprocessor MCU
With the A/D conversion chips and WIFI communication chip being attached thereto, the input of A/D conversion chips is connected by control source port
The signal output part of multiple coils of more opening joint current transformers.The effect of the data acquisition dispensing device be by
Voltage after test is calculated, and is drawn earth current and is carried out WIFI transmission.
Described single-chip microprocessor MCU is singlechip chip, can select STM32 series monolithics.Described A/D conversion chips
ADC0809 family chips can be selected, described WIFI communication chip can select SIM808 chips.
Described more openings joint current transformer makes it be set in outside transmission line of electricity when installing.It is act as in line electricity
Coil voltage is produced because opening acts under stream effect, the opening of opening combinations iron core is Scaling so that under different electric currents
Caused voltage is different.So as to calculate earth current.
Above example is implemented under premised on technical solution of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
It is conventional method not mentionlet alone bright.
Claims (2)
1. a kind of cable shaft earth current test device of more opening joint testing currents, it is characterised in that including more opening connection
Close current transformer and data acquisition dispensing device；
Described more openings joint current transformer includes core portion and coiler part, and core portion is by multiple circular iron of opening
Core ring is formed in parallel with multiple isolated insulation circular layer intervals, it is in parallel after iron core ring form tubbiness, coiler part include uniformly around
Make multiple coils in multiple opening circular iron core ring outer ends, the corresponding opening circular iron core ring of a coil；
The opening scaled down of described multiple opening circular iron core rings, diminution ratio value are 1/2-2/3；
The signal output part connection data acquisition dispensing device of multiple coils of described more openings joint current transformer,
The voltage data of multiple coils is transmitted wirelessly by data acquisition dispensing device.
2. a kind of cable shaft earth current test device of more opening joint testing currents according to claim 1, it is special
Sign is, described data acquisition dispensing device is monolithic processor control device, including single-chip microprocessor MCU and the A/ that is attached thereto
D conversion chips and WIFI communication chip, the input of A/D conversion chips connect more opening joint electric currents by control source port
The signal output part of multiple coils of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131666.0A CN107741518B (en) | 2017-11-15 | 2017-11-15 | Cable well grounding current testing device for multi-opening combined current testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131666.0A CN107741518B (en) | 2017-11-15 | 2017-11-15 | Cable well grounding current testing device for multi-opening combined current testing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107741518A true CN107741518A (en) | 2018-02-27 |
| CN107741518B CN107741518B (en) | 2023-12-19 |
Family
ID=61234815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711131666.0A Active CN107741518B (en) | 2017-11-15 | 2017-11-15 | Cable well grounding current testing device for multi-opening combined current testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107741518B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387690A (en) * | 2018-12-06 | 2019-02-26 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of portable high-pressure based on arc laminated core is wireless current detection means |
| CN109738683A (en) * | 2019-01-22 | 2019-05-10 | 广东航粤电气有限公司 | A kind of communication type current transformer of more open types |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128854A (en) * | 1981-02-02 | 1982-08-10 | Mitsubishi Electric Corp | Current transformer |
| CN1570655A (en) * | 2004-04-28 | 2005-01-26 | 华中科技大学 | Double detection type current sensor |
| US20110006755A1 (en) * | 2009-07-09 | 2011-01-13 | General Electric Company | High sensitivity differential current transformer for insulation health monitoring |
| JP2013054016A (en) * | 2011-08-31 | 2013-03-21 | Kohshin Electric Corp | Shape of magnetic core in current sensor |
| CN203894317U (en) * | 2014-03-19 | 2014-10-22 | 浙江科畅电子有限公司 | Online monitoring device used for leakage current of high-voltage cables |
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| CN105004940A (en) * | 2015-05-12 | 2015-10-28 | 浙江工业职业技术学院 | Position adjustable magnetic core coil parameter measuring device |
| CN105161258A (en) * | 2015-09-25 | 2015-12-16 | 国家电网公司 | Wide-range current transformer and gas gap length calculation method |
| CN205039036U (en) * | 2015-09-25 | 2016-02-17 | 国家电网公司 | Wide -range current transformer |
| CN205120845U (en) * | 2015-09-02 | 2016-03-30 | 浙江方圆电气设备检测有限公司 | Low -voltage heavy current temperature -rise tests system suitable for multiloop output |
| CN205920157U (en) * | 2016-07-19 | 2017-02-01 | 贵州电网有限责任公司铜仁供电局 | Transformer core earth current detection device of many mutual -inductors |
| CN106410977A (en) * | 2016-10-18 | 2017-02-15 | 国网辽宁省电力有限公司鞍山供电公司 | Transmission line antirattler for comprehensive test of draw-out power by wireless induction |
| CN206020504U (en) * | 2016-08-26 | 2017-03-15 | 三峡大学 | A kind of high-precision electronic insertion current transformer of iron-core coil containing air gap |
| CN207528797U (en) * | 2017-11-15 | 2018-06-22 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of cable shaft earth current test device of more opening joint testing currents |
-
2017
- 2017-11-15 CN CN201711131666.0A patent/CN107741518B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128854A (en) * | 1981-02-02 | 1982-08-10 | Mitsubishi Electric Corp | Current transformer |
| CN1570655A (en) * | 2004-04-28 | 2005-01-26 | 华中科技大学 | Double detection type current sensor |
| US20110006755A1 (en) * | 2009-07-09 | 2011-01-13 | General Electric Company | High sensitivity differential current transformer for insulation health monitoring |
| JP2013054016A (en) * | 2011-08-31 | 2013-03-21 | Kohshin Electric Corp | Shape of magnetic core in current sensor |
| CN203894317U (en) * | 2014-03-19 | 2014-10-22 | 浙江科畅电子有限公司 | Online monitoring device used for leakage current of high-voltage cables |
| CN104764929A (en) * | 2015-03-10 | 2015-07-08 | 三峡大学 | Grounding current testing device for portable transformer iron core |
| CN105004940A (en) * | 2015-05-12 | 2015-10-28 | 浙江工业职业技术学院 | Position adjustable magnetic core coil parameter measuring device |
| CN205120845U (en) * | 2015-09-02 | 2016-03-30 | 浙江方圆电气设备检测有限公司 | Low -voltage heavy current temperature -rise tests system suitable for multiloop output |
| CN105161258A (en) * | 2015-09-25 | 2015-12-16 | 国家电网公司 | Wide-range current transformer and gas gap length calculation method |
| CN205039036U (en) * | 2015-09-25 | 2016-02-17 | 国家电网公司 | Wide -range current transformer |
| CN205920157U (en) * | 2016-07-19 | 2017-02-01 | 贵州电网有限责任公司铜仁供电局 | Transformer core earth current detection device of many mutual -inductors |
| CN206020504U (en) * | 2016-08-26 | 2017-03-15 | 三峡大学 | A kind of high-precision electronic insertion current transformer of iron-core coil containing air gap |
| CN106410977A (en) * | 2016-10-18 | 2017-02-15 | 国网辽宁省电力有限公司鞍山供电公司 | Transmission line antirattler for comprehensive test of draw-out power by wireless induction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387690A (en) * | 2018-12-06 | 2019-02-26 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of portable high-pressure based on arc laminated core is wireless current detection means |
| CN109387690B (en) * | 2018-12-06 | 2024-02-06 | 国网辽宁省电力有限公司鞍山供电公司 | Portable high-voltage wireless current detection device based on arc laminated iron core |
| CN109738683A (en) * | 2019-01-22 | 2019-05-10 | 广东航粤电气有限公司 | A kind of communication type current transformer of more open types |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107741518B (en) | 2023-12-19 |
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