CN106353643A - Resistance proportion cable fault tester - Google Patents
Resistance proportion cable fault tester Download PDFInfo
- Publication number
- CN106353643A CN106353643A CN201610984379.3A CN201610984379A CN106353643A CN 106353643 A CN106353643 A CN 106353643A CN 201610984379 A CN201610984379 A CN 201610984379A CN 106353643 A CN106353643 A CN 106353643A
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- Prior art keywords
- voltage
- sampler
- signal
- accuracy
- test
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- 238000013500 data storage Methods 0.000 claims abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims description 26
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention relates to a resistance proportion cable fault tester which comprises a chassis, wherein a liquid crystal display screen and a keyboard are arranged above the chassis; a voltage signal generator, a high precision voltage sampler, a high precision current sampler, a signal amplifier, an A/D converter, a measurement circuit controller, a CPU (Central Processing Unit), a data storage and a display unit are integrated inside the chassis; the measurement circuit controller is connected with the high precision voltage sampler; the high precision voltage sampler is connected with the signal amplifier; the signal amplifier is connected with the A/D converter; the CPU is respectively connected with the voltage signal generator, the measurement circuit controller, the A/D converter, the data storage, the display unit and the keyboard; and the display unit is connected with a liquid crystal display. The resistance proportion cable fault tester provided by the invention is not influenced by factors such as length, capacity, type and operating environment of a cable, the distance of a fault point can be accurately tested, the performance of an instrument is stable, and the operation is simple.
Description
Technical field:
The present invention relates to technical field of electric power, particularly to a kind of resistance ratio electric cable failure detector.
Background technology:
In power equipment, the conveying of the unimpeded and electric power of wire communication depends on the normal operation of cable run.Once
There is obstacle in circuit, find fault not in time and excluded rapidly, will result in very big economic loss and bad society
Impact.Thus, electric cable failure detector is the important tool safeguarding various cables.Electric cable failure detector is a set of comprehensive
Electric cable failure detector device, can carry out test failure point distance to faults such as the ground connection of cable, short circuit, broken string, loose contacts,
Can be used as in the calibration to cable length.But the development with city, cable length and capacity are directly proportional to the development in city, when super
When length, large-sized cable occur high resistive fault, reveal fault, to Method of Cable Trouble Point apart from extremely difficult；Even hinder electricity for some reason
The factors such as cable type, cable fault property, running environment cannot measure Method of Cable Trouble Point distance.
Content of the invention:
The present invention is in order to overcome drawbacks described above present in prior art, there is provided a kind of resistance ratio cable fault test
Instrument.
For solving the above problems, resistance ratio electric cable failure detector proposed by the present invention, comprising: cabinet, described cabinet
There are LCDs, keyboard above；It is internally integrated voltage signal generator, high-accuracy voltage sampler, high-precision cipher telegram in cabinet
Stream sampler, signal amplifier, a/d transducer, measuring loop controller, cpu processor, data storage, display unit；Its
In, measuring loop controller is connected with high-accuracy voltage sampler, and high-accuracy voltage sampler is connected with signal amplifier, signal
Amplifier is connected with a/d transducer, and high-accuracy current sampler is connected with signal amplifier, signal amplifier and a/d transducer
It is connected, cpu processor is single with voltage signal generator, measuring loop controller, a/d transducer, data storage, display respectively
Unit, keyboard are connected, and display unit is connected with liquid crystal display.
Preferably, described resistance ratio electric cable failure detector, also includes voltage signal generator, high-accuracy voltage takes
Sample device, high-accuracy current sampler, export test voltage signal in wherein one good phase line of cable by voltage signal generator
In fault phase line, this two phase lines end is connected short circuit.
Preferably, described resistance ratio electric cable failure detector, voltage, current sampler and measuring loop controller are
Voltage bridge formula balancing circuitry or resistance test circuit.
Preferably, described resistance ratio electric cable failure detector, test scope: 10v～110kv cable.
Preferably, described resistance ratio electric cable failure detector, instrument electric power system alternating current-direct current simultaneously carries battery confession
Electricity.
Preferably, described resistance ratio electric cable failure detector, voltage signal generator may also be constant current source generator.
Preferably, described resistance ratio electric cable failure detector, voltage or current signal input the sliding end of potentiometer,
Adjust sliding end and be allowed to the two ends balance with test failure cable.
, after voltage signal generator is to one test signal of cable fault, measuring loop controller is according to cpu for the present invention
Processor instruction, selection loop is high-accuracy voltage sampler, high-accuracy current sampler gets test signal, by test signal
It is conveyed to signal amplifier to be amplified, then exports to a/d transducer change data, data gives input cpu processor analysis, will
Test data is saved in data storage, exports to display unit, in liquid crystal display screen display simultaneously.
The principles of science of the technical program institute foundation:
Coaxial cable a, b, c phase line resistance is almost equal, and error is negligible, faulty by not having in coaxial cable
Phase line (hereinafter referred to as: relief cable) is connected with fault phase line end, adds a voltage, just between relief cable and fault phase line
HaveWherein, l, r1 and r2 can measure and obtain, such as figure two, so
The present invention: calculate failure cable phase line resistance ratio, converse Method of Cable Trouble Point distance, be i.e. the event of resistance ratio cable
Barrier tester.
The present invention is had the advantages that and advantage compared with prior art:
The present invention, according to calculating failure cable phase line resistance ratio, converses Method of Cable Trouble Point distance, and this measurement
Method is not affected by factors such as the length of cable, capacity, type, running environment, can accurately test out trouble point distance, instrument
Stable performance, simple to operate, can effectively solve the problem that and high resistive fault occurs, reveals during fault to electricity because of overlength degree, large-sized cable
The range measurement of cable trouble point causes difficulty cannot measure with the factor such as barrier type of cable, cable fault property, running environment for some reason
Method of Cable Trouble Point apart from the problems such as.
Brief description:
Fig. 1 is resistance ratio electric cable failure detector schematic diagram of the present invention；
Fig. 2 is equivalent measuring test chart of the present invention.
In figure numbering explanation: 1, data storage；2nd, keyboard；3rd, LCDs；4th, voltage signal generator；5、cpu
Processor；6th, display unit；7th, high-accuracy voltage sampler；8th, signal amplifier；9th, high-accuracy current sampler；10th, measure
Loop control unit；11st, a/d transducer.
Specific embodiment:
Below in conjunction with the accompanying drawings and instantiation, it is further elucidated with the present invention it should be understood that these embodiments are merely to illustrate this
Invention rather than restriction the scope of the present invention, after having read the present invention, those skilled in the art are various to the present invention
The modification of the equivalent form of value all falls within the application claims limited range.
As shown in figure 1, resistance ratio electric cable failure detector, including cabinet, have above described cabinet liquid crystal display 3,
Keyboard 2, is internally integrated voltage signal generator 4, high-accuracy voltage sampler 7, high-accuracy current sampler 9, signal in cabinet
Amplifier 8, a/d transducer 11, measuring loop controller 10, cpu processor 5, data storage 1；Tester passes through to show key
Before disk 2 sets test, parameter inputs to cpu processor 5, and cpu processor 5 sends instructions to the control of voltage signal generator 4
Part, voltage signal generator 4 exports a test voltage signal to failure cable, and cpu processor 5 controls simultaneously and measures back
Road controller 10, needs to select different test loops according to calculating, each test loop through high-accuracy voltage sampler 7,
The data of high-accuracy current sampler 9 measurement, input signal amplifier 8 amplifies test signal, inputs a/d transducer 11, conversion
Export cpu processor 5 after becoming digital signal, after cpu processor 5 is according to the process of measuring and calculation mathematical expression, test result is passed through
Display unit 6 shows on liquid crystal display 3, and meanwhile, test result data will be saved in data storage 1, wait tester
Member's call instruction.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this
In the right of invention.
Claims (7)
1. resistance ratio electric cable failure detector, it is characterised in that including cabinet, has LCDs, key above described cabinet
Disk；Be internally integrated in cabinet voltage signal generator, high-accuracy voltage sampler, high-accuracy current sampler, signal amplifier,
A/d transducer, measuring loop controller, cpu processor, data storage, display unit；Wherein, measuring loop controller with
High-accuracy voltage sampler is connected, and high-accuracy voltage sampler is connected with signal amplifier, signal amplifier and a/d transducer phase
Even, high-accuracy current sampler is connected with signal amplifier, and signal amplifier is connected with a/d transducer, cpu processor respectively with
Voltage signal generator, measuring loop controller, a/d transducer, data storage, display unit, keyboard are connected, display unit
It is connected with liquid crystal display；User passes through keyboard and sends test instruction to cpu processor, and cpu processor control voltage signal is sent out
The size of raw device output signal, test signal is inputed to load, and meanwhile, cpu processor measures back according to calculating requirement control
Road controller, by high-accuracy voltage sampler, high-accuracy current sampler by measurement signal input signal amplifier, signal quilt
After amplification, input a/d transducer is converted into digital signal, after digital signal input cpu processor calculates, test result is exported
To display unit and LCDs, measurement result is saved in data storage simultaneously.
2. the resistance ratio electric cable failure detector according to claim 1 requires is it is characterised in that also include voltage signal
Generator, high-accuracy voltage sampler, high-accuracy current sampler, by voltage signal generator export test voltage signal in
In wherein one good phase line of cable and fault phase line, this two phase lines end is connected short circuit.
3. resistance ratio electric cable failure detector according to claim 1 it is characterised in that voltage, current sampler with
Measuring loop controller is voltage bridge formula balancing circuitry or resistance test circuit.
4. resistance ratio electric cable failure detector according to claim 1 it is characterised in that test scope: 10v～
110kv cable.
5. resistance ratio electric cable failure detector according to claim 1 is it is characterised in that instrument electric power system alternating current-direct current
And carry battery and power.
6. resistance ratio electric cable failure detector according to claim 1 is it is characterised in that voltage signal generator can use
Constant current source generator replaces.
7. the resistance ratio electric cable failure detector according to claim 3 or claim 6 it is characterised in that voltage or
Current signal inputs the sliding end of potentiometer, adjusts sliding end and is allowed to the two ends balance with test failure cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610984379.3A CN106353643B (en) | 2016-11-09 | 2016-11-09 | Resistance ratio electric cable failure detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610984379.3A CN106353643B (en) | 2016-11-09 | 2016-11-09 | Resistance ratio electric cable failure detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106353643A true CN106353643A (en) | 2017-01-25 |
| CN106353643B CN106353643B (en) | 2019-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610984379.3A Active CN106353643B (en) | 2016-11-09 | 2016-11-09 | Resistance ratio electric cable failure detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106353643B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594080A (en) * | 2018-05-30 | 2018-09-28 | 武汉国鼎科技有限公司 | The full-automatic online navigation positioning system of cable fault |
| CN112415433A (en) * | 2019-08-21 | 2021-02-26 | 华东师范大学 | Long-lead short-circuit fault point positioning device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02231580A (en) * | 1989-03-03 | 1990-09-13 | Fuji Electric Co Ltd | Method for surveying accident point of three-phase cable |
| JPH0413980A (en) * | 1990-05-08 | 1992-01-17 | Tokyo Electric Power Co Inc:The | Apparatus for measuring insulation deterioration of cable line |
| CN2325783Y (en) * | 1998-05-08 | 1999-06-23 | 李全用 | Comprehensive type instrument for locating faults in communication cable |
| CN102096023A (en) * | 2010-12-17 | 2011-06-15 | 西安四方机电有限责任公司 | Device and method for testing power cable fault |
| CN202649380U (en) * | 2012-05-30 | 2013-01-02 | 上海电力学院 | Digital cable insulation fault automatic locator |
| CN202758035U (en) * | 2012-08-12 | 2013-02-27 | 湖北仪天成电力设备有限公司 | Cable fault tester |
| CN105137292A (en) * | 2015-09-22 | 2015-12-09 | 国家电网公司 | Direct-current signal intelligent acquiring device used for high-voltage cable fault positioning |
| CN105785228A (en) * | 2016-04-14 | 2016-07-20 | 无锡南理工科技发展有限公司 | Multifunctional communication cable fault tester |
-
2016
- 2016-11-09 CN CN201610984379.3A patent/CN106353643B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02231580A (en) * | 1989-03-03 | 1990-09-13 | Fuji Electric Co Ltd | Method for surveying accident point of three-phase cable |
| JPH0413980A (en) * | 1990-05-08 | 1992-01-17 | Tokyo Electric Power Co Inc:The | Apparatus for measuring insulation deterioration of cable line |
| CN2325783Y (en) * | 1998-05-08 | 1999-06-23 | 李全用 | Comprehensive type instrument for locating faults in communication cable |
| CN102096023A (en) * | 2010-12-17 | 2011-06-15 | 西安四方机电有限责任公司 | Device and method for testing power cable fault |
| CN202649380U (en) * | 2012-05-30 | 2013-01-02 | 上海电力学院 | Digital cable insulation fault automatic locator |
| CN202758035U (en) * | 2012-08-12 | 2013-02-27 | 湖北仪天成电力设备有限公司 | Cable fault tester |
| CN105137292A (en) * | 2015-09-22 | 2015-12-09 | 国家电网公司 | Direct-current signal intelligent acquiring device used for high-voltage cable fault positioning |
| CN105785228A (en) * | 2016-04-14 | 2016-07-20 | 无锡南理工科技发展有限公司 | Multifunctional communication cable fault tester |
Non-Patent Citations (1)
| Title |
|---|
| 桂媛 等: "基于电桥法电缆绝缘故障自动测距的研究", 《电气应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594080A (en) * | 2018-05-30 | 2018-09-28 | 武汉国鼎科技有限公司 | The full-automatic online navigation positioning system of cable fault |
| CN112415433A (en) * | 2019-08-21 | 2021-02-26 | 华东师范大学 | Long-lead short-circuit fault point positioning device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106353643B (en) | 2019-05-28 |
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Effective date of registration: 20200714 Address after: Room b-004, 12 / F, unit 1, building 1, Qingshan Torch Building, No. 54, metallurgy Avenue, Qingshan District, Wuhan City, Hubei Province Patentee after: WUHAN GUODING TECHNOLOGY Co.,Ltd. Address before: Yao town 430322 Hubei province Wuhan city Huangpi District Yao Ji Cun Yao Jia Da Wan No. 29 Patentee before: Lei Xijun |