CN112557849A - Performance verification platform for comprehensive detection device of distribution cable line - Google Patents
Performance verification platform for comprehensive detection device of distribution cable line Download PDFInfo
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- CN112557849A CN112557849A CN202011407286.7A CN202011407286A CN112557849A CN 112557849 A CN112557849 A CN 112557849A CN 202011407286 A CN202011407286 A CN 202011407286A CN 112557849 A CN112557849 A CN 112557849A
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- cable
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- distribution cable
- line
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- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 238000012795 verification Methods 0.000 title claims abstract description 21
- 230000002950 deficient Effects 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 6
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 4
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 7
- 230000003534 oscillatory effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to the technical field of power cable tests, in particular to a performance verification platform of a comprehensive detection device of a distribution cable line, which comprises the distribution cable line and the comprehensive detection device of the distribution cable line; the distribution cable line comprises a new cable sample, a defective cable sample and a cable branch box; the new cable sample is directly connected between the cable branch boxes, and the defective cable sample is connected between the cable branch boxes through the distribution cable line comprehensive detection device. The performance verification platform of the distribution cable line comprehensive detection device can efficiently and accurately compare the detection characteristics of an offline voltage-withstanding, partial-discharge and dielectric loss integrated device, a variable-frequency resonance device, an oscillatory wave device and an ultralow-frequency sine device in the aspects of voltage resistance, partial discharge, dielectric loss and the like, and can scientifically evaluate whether the performance of the distribution cable partial-discharge live detection device and the distribution cable partial-discharge severe-discharge monitoring and positioning device reaches the standard or not.
Description
Technical Field
The invention relates to the technical field of power cable tests, in particular to a performance verification platform of a comprehensive detection device for a distribution cable line.
Background
At present, for a plurality of detection and monitoring technologies for the insulation of a distribution cable, Chinese patent CN202735413U discloses an on-site measurement system for a dielectric loss value of a cross-linked polyethylene power cable, which can effectively detect the loss value of the cable, and in addition, a series resonance withstand voltage test, an ultra-low frequency sine wave test, an oscillating wave test and the like which are commonly used in off-line detection are also provided; the on-line monitoring technology includes high-frequency current detection technology, ultrasonic detection technology and the like. Many detection devices are available at home and abroad in each technology, however, a unified and efficient detection platform is not available at present to perform performance verification on various devices, and the validity of the existing detection devices and the reliability of test results are uncertain.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a performance verification platform for a comprehensive detection device of a distribution cable line, which can efficiently and accurately compare the detection characteristics of various detection devices so as to judge whether the performance of the detection devices reaches the standard.
In order to solve the technical problems, the invention provides the following technical scheme:
a performance verification platform for a comprehensive detection device of a distribution cable line comprises the distribution cable line and the comprehensive detection device of the distribution cable line; the distribution cable line comprises a new cable sample, a defective cable sample and a cable branch box; the new cable sample is directly connected between the cable branch boxes, and the defective cable sample is connected between the cable branch boxes through the distribution cable line comprehensive detection device.
Furthermore, the new cable sample and the cable branch box and the defective cable sample and the cable branch box are connected with a terminal through non-partial-discharge quick connectors, so that the defective cable sample can be quickly converted.
Furthermore, the cable branch box is provided with the partial discharge-free quick connector for converting the defective cable sample and the comprehensive detection device for the distribution cable line.
Furthermore, the new cable sample is an XLPE cable and is laid in the cable trench.
Further, the defective cable test piece includes: micropores in the cable body and the tip of the semiconductor shielding layer; the tip of a connecting pipe in the cable intermediate joint, the stress cone, the dirt or the tool mark on the cable edge surface and the installation dislocation are three types; stress cone in cable termination-cable edge dirt or knife mark and installation misalignment.
Further, the distribution cable line comprehensive testing device includes: the device comprises a distribution cable off-line voltage-withstanding, partial discharge and dielectric loss integrated device, a distribution cable partial discharge live-line detection device and a distribution cable partial discharge severe monitoring and positioning device.
Further, the device also comprises a variable frequency resonance device for checking and verifying the pressure resistance of the integrated device.
Furthermore, the device is used for checking and verifying the oscillation wave device of the local discharge performance of the integrated device.
And further, the ultra-low frequency sine device is used for checking and verifying the medium loss performance of the integrated device.
Furthermore, for an online testing device, namely a distribution cable partial discharge live detection device and a distribution cable partial discharge severe monitoring and positioning device, indirect comparison and verification with an offline device are adopted.
Compared with the prior art, the invention has the following beneficial effects:
the invention can efficiently and accurately compare the detection characteristics of an offline voltage-withstanding, partial discharge and dielectric loss integrated device, a variable-frequency resonance device, an oscillating wave device and an ultra-low-frequency sine device in the aspects of voltage withstanding, partial discharge, dielectric loss and the like, and can scientifically evaluate whether the performance of a distribution cable partial discharge live detection device and a distribution cable partial discharge severe monitoring and positioning device reaches the standard or not.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a performance verification platform of the comprehensive detection device for a distribution cable line according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention comprises the following steps:
example 1:
a performance verification platform for a comprehensive detection device of a distribution cable line comprises the distribution cable line and the comprehensive detection device of the distribution cable line; the distribution cable line comprises a new cable sample, a defective cable sample and a cable branch box; the new cable sample is directly connected between the cable branch boxes, and the defective cable sample is connected between the cable branch boxes through the distribution cable line comprehensive detection device.
In this embodiment, the new cable sample and the cable branch box and the defective cable sample and the cable branch box are connected to the terminal through the non-partial-discharge quick connectors, so that the defective cable sample can be quickly converted.
In this embodiment, the cable branch box is provided with the above-mentioned partial discharge-free quick connector for converting the defective cable sample and the comprehensive detection device for the distribution cable line.
In this embodiment, the new cable sample is an XLPE cable laid in the cable trench.
In this embodiment, the defective cable test piece includes: micropores in the cable body and the tip of the semiconductor shielding layer; the tip of a connecting pipe in the cable intermediate joint, the stress cone, the dirt or the tool mark on the cable edge surface and the installation dislocation are three types; stress cone in cable termination-cable edge dirt or knife mark and installation misalignment.
In this embodiment, the distribution cable line comprehensive testing device includes: the device comprises a distribution cable off-line voltage-withstanding, partial discharge and dielectric loss integrated device, a distribution cable partial discharge live-line detection device and a distribution cable partial discharge severe monitoring and positioning device.
In this embodiment, the device further comprises a variable frequency resonance device for checking and verifying the pressure resistance of the integrated device.
In the present embodiment, the oscillation wave device is used for examining and verifying the local discharge performance of the integrated device.
In the embodiment, the ultra-low frequency sine device is used for checking and verifying the medium loss performance of the integrated device.
In this embodiment, the online testing device, i.e. the live detection device for partial discharge of the distribution cable and the monitoring and positioning device for severe partial discharge of the distribution cable, is verified by indirect comparison with the offline device.
Example 2:
the present embodiment is based on the above embodiment 1, and belongs to one of the use cases, as shown in fig. 1, a switch box is used for work, and the defective cable sample is detected.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A performance verification platform for a comprehensive detection device of a distribution cable line is characterized by comprising the distribution cable line and the comprehensive detection device of the distribution cable line; the distribution cable line comprises a new cable sample, a defective cable sample and a cable branch box; the new cable sample is directly connected between the cable branch boxes, and the defective cable sample is connected between the cable branch boxes through the distribution cable line comprehensive detection device.
2. The integrated distribution cable line inspection device performance verification platform of claim 1, wherein the new cable test sample and the cable breakout box and the defective cable test sample and the cable breakout box are connected to a terminal by non-partial discharge quick connectors.
3. The integrated distribution cable line inspection device performance verification platform of claim 1, wherein the cable breakout box is provided with the partial discharge free quick connector for converting a defective cable specimen and a distribution cable line integrated inspection device.
4. The integrated distribution cable line inspection device performance verification platform of claim 1, wherein the new cable sample is an XLPE cable laid in a cable trench.
5. The integrated distribution cabling inspection device performance verification platform of claim 1, wherein said defective cable coupon comprises: micropores in the cable body and the tip of the semiconductor shielding layer; the tip of a connecting pipe in the cable intermediate joint, the stress cone, the dirt or the tool mark on the cable edge surface and the installation dislocation are three types; stress cone in cable termination-cable edge dirt or knife mark and installation misalignment.
6. The integrated distribution cabling inspection device performance verification platform of claim 1, wherein said integrated distribution cabling inspection device comprises: the device comprises a distribution cable off-line voltage-withstanding, partial discharge and dielectric loss integrated device, a distribution cable partial discharge live-line detection device and a distribution cable partial discharge severe monitoring and positioning device.
7. The comprehensive detection device performance verification platform for the distribution cable line according to claim 6, further comprising a variable frequency resonance device for checking and verifying the pressure resistance of the integrated device.
8. The comprehensive detection device performance verification platform of the distribution cable line according to claim 6, characterized by being used for examining and verifying the oscillation wave device of the local discharge performance of the integrated device.
9. The comprehensive detection device performance verification platform for distribution cable lines as claimed in claim 6, wherein the platform is an ultra-low frequency sine device for checking and verifying the dielectric loss performance of the integrated device.
10. The platform of claim 6, wherein the on-line testing device, i.e. the live detection device for partial discharge of the distribution cable and the monitoring and positioning device for severe partial discharge of the distribution cable, is indirectly compared with the off-line testing device for verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407286.7A CN112557849A (en) | 2020-12-04 | 2020-12-04 | Performance verification platform for comprehensive detection device of distribution cable line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011407286.7A CN112557849A (en) | 2020-12-04 | 2020-12-04 | Performance verification platform for comprehensive detection device of distribution cable line |
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| CN112557849A true CN112557849A (en) | 2021-03-26 |
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| CN202011407286.7A Pending CN112557849A (en) | 2020-12-04 | 2020-12-04 | Performance verification platform for comprehensive detection device of distribution cable line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295978A (en) * | 2021-06-09 | 2021-08-24 | 广东电网有限责任公司 | Cable detection device, method, terminal device and computer readable storage medium |
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| CN106124939A (en) * | 2016-06-12 | 2016-11-16 | 西安博源电气有限公司 | Distributed high tension cable partial discharge monitoring and alignment system |
| CN106990341A (en) * | 2017-05-26 | 2017-07-28 | 西安交通大学 | Distribution cable insulation diagnosis ultralow frequency cosine square wave high pressure generator and method |
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| CN110967604A (en) * | 2019-12-24 | 2020-04-07 | 武汉华威众科电力有限公司 | Cable partial discharge test platform test system |
| CN111880064A (en) * | 2020-08-03 | 2020-11-03 | 国网山东省电力公司威海供电公司 | Cable voltage-withstanding partial discharge synchronous detection device |
| CN111965497A (en) * | 2020-06-22 | 2020-11-20 | 内蒙古大唐国际托克托发电有限责任公司 | High-voltage cable early defect joint diagnosis method |
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2020
- 2020-12-04 CN CN202011407286.7A patent/CN112557849A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016019666A1 (en) * | 2014-08-07 | 2016-02-11 | 国家电网公司 | Method and device for detecting partial discharge of cable |
| CN105334433A (en) * | 2014-08-07 | 2016-02-17 | 国家电网公司 | Cable partial discharge detection method and device |
| CN106124939A (en) * | 2016-06-12 | 2016-11-16 | 西安博源电气有限公司 | Distributed high tension cable partial discharge monitoring and alignment system |
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| CN113295978A (en) * | 2021-06-09 | 2021-08-24 | 广东电网有限责任公司 | Cable detection device, method, terminal device and computer readable storage medium |
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Application publication date: 20210326 |