CN107192928A - The experimental provision for the vehicle-carrying cable insulation aging that operating ambient temperature frequently changes - Google Patents
The experimental provision for the vehicle-carrying cable insulation aging that operating ambient temperature frequently changes Download PDFInfo
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- CN107192928A CN107192928A CN201710394352.3A CN201710394352A CN107192928A CN 107192928 A CN107192928 A CN 107192928A CN 201710394352 A CN201710394352 A CN 201710394352A CN 107192928 A CN107192928 A CN 107192928A
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- cable
- temperature
- vehicle
- experiment
- heater box
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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
Abstract
A kind of experimental provision of the vehicle-carrying cable insulation aging frequently changed the invention discloses operating ambient temperature, realize and simulate vehicle-carrying cable insulation aging caused by vehicle-mounted cable termination sample frequently changes at a temperature of different loads because of environment temperature, the experimental provision mainly includes cable termination sample body, humidity control system, power module, switch control module and the air flow controller after processing.Apparatus of the present invention can frequently alternate actual environment situation be simulated to on-board high-voltage cable high temperature experienced in actual moving process and low temperature, and can realize and carrying out heating treatment using heating rod at cable core inside vehicle-mounted cable, it is to avoid the interference problem brought using high current.Apparatus of the present invention can pass through low-temperature test chamber, the regulation tested heater box, realize vehicle-mounted cable ambient temperature change, the regulation that its internal temperature changes is realized by electromagnetic heating rod, and then studied because temperature frequently alternately changes lower cable insulation aging characteristics research.
Description
Technical field
The invention belongs to vehicle-carrying cable insulation ageing state detection field, and in particular to a kind of operating ambient temperature frequently becomes
The experimental provision of the vehicle-carrying cable insulation aging of change.
Background technology
Electric locomotive and EMUs are in actual moving process, due to the mileage length of rail track, across region extensively, and not
Weather conditions with area differ greatly, therefore to be subjected to external environment in the process of running more violent for on-board high-voltage cable
Temperature change, inevitably damage or aging influence, especially electric locomotive is produced on the state of insulation of vehicle-mounted cable and dynamic
When car group is run in NORTHWEST CHINA area, vehicle-mounted cable can be subjected to by subzero tens degree to tens degree above freezing in the short period of time
The temperature difference influence, while due to the fuel factor of high current cable insulation can be made internally to bear higher temperature in cable conductor.
Because ambient temperature changes the collective effect with internal heat, the insulation ag(e)ing situation of vehicle-mounted cable termination is more serious,
Threaten the safe operation of electric locomotive.
Vehicle-mounted cable is in actual motion, and the influence about external temperature and internal temperature rise to state of insulation is still unintelligible,
Research at present for vehicle-mounted cable and terminating insulation aging performance is main based on internal temperature rise, often using current transformer
Principle senses high current in cable core, and cost is higher, easily causes interference, and ambient temperature can not become during dry run
Change the influence caused.Therefore to realize the environmental condition that cable surrounding temperature frequently changes, the live high and low temperature alternative of simulation is frequent
Situation, be badly in need of it is a kind of being capable of the experimental provision of vehicle-carrying cable insulation aging that frequently changes of dry run environment temperature.
The content of the invention
In order to environment temperature in dry run, frequently change causes cable insulation aging, and the invention provides one kind fortune
The experimental provision for the vehicle-carrying cable insulation aging that row environment temperature frequently changes：
The experimental provision for the vehicle-carrying cable insulation aging that a kind of operating ambient temperature frequently changes, for realizing cable termination
Sample carries out senile experiment under different loads temperature conditions, by experimental box body, the cable termination sample being placed in experimental box body
Body, humidity control system, power module and air flow controller are constituted；The experimental box body by low-temperature test chamber 9 and pass through branch
The experiment heater box 17 that frame 12 is stood in low-temperature test chamber is constituted；Test and set in the double wall structure that heater box 17 is cup-shaped, double wall
It is equipped with the heating wire 19 heated by dc source 7；Experiment heater box 17 be used for contain insulating oil 22 cup in be provided with four
Only measure the oil temperature sensor of oil temperature；Humidity control system 1 receives the signal of oil temperature sensor and controls mode of operation controller 2
Oil temperature in control experiment heater box；
The cable termination sample body 21 is treated cable termination, is got out directly at its center of inside cable cable core 31
The slightly smaller hollow cylinder in footpath, passes through hollow cylinder center by electromagnetic heating rod 32, is positioned in cable conductor 31, and uses resistance to height
Electromagnetic heating rod 32 is fixed on inwall by the good insulating cement of warm nature energy, and is connected by wire with radio-frequency power supply 6, adds electromagnetism
The heat production of hot pin 32, realizes the function of dummycable running temperature under that loading condition；
Humidity control system 1, power module 38 and switch control module 37 carry out cable termination sample during dummycable operation
The internal temperature of body 21 and the ambient temperature frequently changed；
The upper end of low-temperature test chamber 9 is provided with intake valve 13 and ventilation mouth 16, and air pump 14 is connected to the ventilation exhaust outlet 15 of mouth 16
Between, auxiliary realizes efficiently quick cooling inside device.
The cable termination sample body 21 hollows out mode using centre, inner ring be outside hollow cylinder, major insulation 30 each layer it
Between arrange internal temperature sensor 33；Cable conductor 31 a diameter of 20mm, a diameter of 12mm of hollow cylinder, the overall diameter of insulating barrier 30
For 40mm, the overall diameter of heat-shrink tube 40 is 56mm, and between there is 2mm gaps, for laying wireless conduction type temperature sensor 33,
The overall diameter of full skirt 24 is that the overall diameter of electromagnetic heating rod 32 in 148mm, hollow cylinder is 10mm, is highly 480mm, intermediate ferromagnetic
The a diameter of 8mm of rod；
As an Application Example, the external height of heater box 39 is tested for 600mm, the vertical height 200mm of lower bracket 12,
It is bilayer, a diameter of 300mm of lubricating cup internal layer, a diameter of 340mm of outer layer, wherein interlayer 20mm, resistance wire 19 to test heater box 39
Width is 10mm, and the thickness of insulating heat-conduction material 20 is 5mm, the thickness 10mm of plexiglass cover 32, is wherein opened on plexiglass cover 32
Mouth width is 56mm；The inside of heater box 39 injection insulating oil 22 is tested, between insulation pasta and experiment heating box cover 17, in advance
50mm space is reserved, the gas breaks testing equipment produced inside insulating oil 22 by temperature change is prevented；In experiment heater box
Sensor 23, No. two sensors 25 are placed in top in 39 built-in electrical insulation oil 22, bottom place No. three sensors 26, No. four
Socket 10 is reserved in sensor 27, experiment heater box 39 bottom, and to connect dc source 7, humidity control system 1 includes digital-to-analogue and turned
Block ADV7123 is changed the mold, is handled, is had using communication cable to mode of operation controller 2 using MCS-51 types general single chip
Effect control.
The present invention can in dry run environment temperature frequently change causes cable insulation aging, experimental situation can be controlled
Temperature, and then study vehicle-mounted cable termination aging characteristics.
Brief description of the drawings
Fig. 1 experimental provision system appearance structures of the present invention and composition schematic diagram.
Fig. 2 experimental provision cable termination detailed dimensions structure charts of the present invention.
The detailed dimensions structure chart of lubricating cup is tested in Fig. 3 experimental provision systems of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 show experimental provision surface structure of the present invention and composition schematic diagram.A kind of operating ambient temperature as shown in Figure 1
Cable termination sample body of the experimental provision of the vehicle-carrying cable insulation aging frequently changed after handling, humidity control system, electricity
Source module, switch control module and air flow controller composition, including：Cable termination sample body 21 is whole in cable by processing
The a diameter of 20mm of sample body 21 center of cable conductor 31 is held, a diameter of 16mm hollow cylinder is got out, by electromagnetic heating rod 32
Through hollow cylinder center, it is positioned in cable conductor 31, and uses the good insulating cement of resistance to elevated temperatures by electromagnetic heating rod 32
It is fixed on inwall, and is connected by wire with radio-frequency power supply 6, make the heat production of electromagnetic heating rod 32, realizes that copper cable core inner heats up
Function；The main electromagnetic heating rod 32 inside cable termination sample body 21 of humidity control system, internal sensor 33, it is placed in
No. five sensors 34 and No. six sensors 35 in hollow cylinder, and experiment heater box heating wire 19, a sensor 23, two
Number sensor 25, No. three sensors 26, No. four sensors 27, low-temperature test chambers 9 are constituted, by comparing wall temperature in cable conductor 31
Degree and temperature sensor 23,25,26,27 in insulating oil 22, control electromagnetic heating rod 32, heating wire 19, the work of low-temperature test chamber 9
Make state, realize the frequent change of the temperature of cable termination sample body 21, support 12, experiment heater box shell 18, experiment heater box
Upper lid 17 uses pmma material, prevents electromagnetic interference, and experiment heater box socket 10 is fixed on experiment heater box shell 18
Bottom, realizes the power supply of heating wire 19；Power module 38 includes radio-frequency power supply 6, dc source 7, AC power 8, controls respectively
Electromagnetic heating rod 32, heating wire 19, the work of low-temperature test chamber 9, and by No. 1 in switch control module 37 switch 3, No. 2
Switch 4, No. 3 switches 5 are connected with mode of operation controller 2, realize effective control of the experimental system bulk temperature；Gas flow optimized
Device is used cooperatively using intake valve 13, air pump 14, exhaust outlet 15, ventilation mouth 16, realizes the efficient quick of device internal temperature
Change.
Fig. 2 is invention experimental provision cable termination detailed dimensions structure chart, and cable termination sample body 21 is used as shown in Figure 2
Centre hollows out mode, and inner ring is to arrange internal temperature sensor 33 outside hollow cylinder, major insulation 30 between each layer；Cable conductor 31
A diameter of 20mm, a diameter of 12mm of hollow cylinder, the overall diameter of insulating barrier 30 are 40mm, and the overall diameter of heat-shrink tube 40 is 56mm, and it
Between there is 2mm gaps, for laying wireless conduction type temperature sensor 33, during the overall diameter of full skirt 24 is 148mm, hollow cylinder
The overall diameter of electromagnetic heating rod 32 is 10mm, is highly 480mm, a diameter of 8mm of intermediate ferromagnetic rod；
Fig. 3 is the detailed dimensions structure chart of experiment heater box in experimental provision system of the present invention, as shown in Figure 3 experiment heating
The external height of case 39 is 600mm, the vertical height 200mm of lower bracket 12, and experiment heater box 39 is bilayer, and lubricating cup internal layer is a diameter of
300mm, the wherein a diameter of 340mm of outer layer, interlayer 20mm, the width of resistance wire 19 are 10mm, and the thickness of insulating heat-conduction material 20 is
5mm, the thickness 10mm of plexiglass cover 32, wherein the upper shed width of plexiglass cover 32 are 56mm；The inside of heater box 39 is tested to note
Enter insulating oil 22, between insulation pasta and experiment heating box cover 17, reserve 50mm space, prevent inside insulating oil 22
The gas breaks testing equipment produced by temperature change；Place a biography in top in the experiment built-in electrical insulation oil 22 of heater box 39
No. three sensors 26, No. four sensors 27 are placed in sensor 23, No. two sensors 25, bottom, and experiment heater box 39 bottom is reserved to insert
Seat 10, to connect dc source 7, humidity control system 1 includes D/A converter module ADV7123, general using MCS-51 types
Single-chip microcomputer processing, is control effectively using communication cable to mode of operation controller 2.
Claims (3)
1. the experimental provision for the vehicle-carrying cable insulation aging that a kind of operating ambient temperature frequently changes, for realizing cable termination sample
Product carry out senile experiment under different loads temperature conditions, it is characterised in that by experimental box body, the cable being placed in experimental box body
Terminal sample body, humidity control system, power module and air flow controller are constituted；The experimental box body is by low-temperature test chamber
(9) the experiment heater box (17) and by support (12) stood in low-temperature test chamber is constituted；It is cup-shaped to test heater box (17)
The heating wire (19) heated by dc source (7) is provided with double wall structure, double wall；It is used to contain absolutely in experiment heater box (17)
The oil temperature sensor of four measurement oil temperatures is provided with the cup of edge oil (22)；Humidity control system (1) receives oil temperature sensor
Signal and control mode of operation controller (2) control experiment heater box in oil temperature；
The cable termination sample body (21) is treated cable termination, is got out directly at its inside cable cable core (31) center
The slightly smaller hollow cylinder in footpath, passes through hollow cylinder center by electromagnetic heating rod (32), is positioned in cable conductor (31), and use
Electromagnetic heating rod (32) is fixed on inwall by the good insulating cement of resistance to elevated temperatures, and is connected by wire with radio-frequency power supply (6),
Make electromagnetic heating rod (32) heat production, realize the function of dummycable running temperature under that loading condition；
Cable termination is tried when humidity control system (1), power module (38) and switch control module (37) carry out dummycable operation
Sample body (21) internal temperature and the ambient temperature frequently changed；
Low-temperature test chamber (9) upper end is provided with intake valve (13) and ventilation mouth (16), and air pump (14) is connected to ventilation mouth (16) row
Between gas port (15), auxiliary realizes efficiently quick cooling inside device.
2. the experimental provision for the vehicle-carrying cable insulation aging that operating ambient temperature according to claim 1 frequently changes, its
Be characterised by, cable termination sample body (21) hollows out mode using centre, inner ring be outside hollow cylinder, major insulation (30) each layer it
Between arrangement internal temperature sensor (33), internal temperature sensor (33) feeds back to real time temperature by signal transmssion line (36)
Humidity control system (1)；Cable conductor (31) a diameter of 20mm, a diameter of 12mm of hollow cylinder, insulating barrier (30) overall diameter is
40mm, heat-shrink tube (40) overall diameter be 56mm, and between there is 2mm gaps, for laying wireless conduction type temperature sensor
(33), full skirt (24) overall diameter is that electromagnetic heating rod (32) overall diameter in 148mm, hollow cylinder is 10mm, is highly
480mm, intermediate ferromagnetic rod (41) a diameter of 8mm.
3. the experimental provision for the vehicle-carrying cable insulation aging that operating ambient temperature according to claim 1 frequently changes, its
It is characterised by, experiment heater box (39) external height is 600mm, lower bracket (12) vertical height 200mm, tests heater box
(39) it is bilayer, a diameter of 300mm of internal layer, the wherein a diameter of 340mm of outer layer, interlayer 20mm, resistance wire (19) width are 10mm,
Insulating heat-conduction material (20) thickness is 5mm, experiment heating box cover (17) thickness 10mm, wherein on experiment heating box cover (17)
A/F is 56mm；Injection insulating oil (22) inside heater box (39) is tested, in insulation pasta and experiment heating box cover
(17) between, 50mm space is reserved, the gas breaks testing equipment for preventing insulating oil (22) internal because temperature change is produced；
Place sensor (23), No. two sensors (25), bottom in top in experiment heater box (39) built-in electrical insulation oily (22)
No. three sensors (26), No. four sensors (27) are placed, socket (10) is reserved in experiment heater box (39) bottom, to connect direct current
Power supply (7), humidity control system (1) includes D/A converter module ADV7123, is handled, made using MCS-51 types general single chip
Mode of operation controller (2) is control effectively with communication cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710394352.3A CN107192928B (en) | 2017-05-29 | 2017-05-29 | The experimental provision for the vehicle-carrying cable insulation aging that operating ambient temperature frequently changes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710394352.3A CN107192928B (en) | 2017-05-29 | 2017-05-29 | The experimental provision for the vehicle-carrying cable insulation aging that operating ambient temperature frequently changes |
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| Publication Number | Publication Date |
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| CN107192928A true CN107192928A (en) | 2017-09-22 |
| CN107192928B CN107192928B (en) | 2019-07-12 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645452A (en) * | 2018-07-16 | 2018-10-12 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of aircraft electrical power supply system cable multi- scenarios method Aging Test device |
| CN108872797A (en) * | 2018-08-22 | 2018-11-23 | 西南交通大学 | A kind of radial part dampness lesion mimic method of cable |
| CN109490717A (en) * | 2018-12-29 | 2019-03-19 | 云南电网有限责任公司电力科学研究院 | A kind of threephase cable degradation system and method |
| CN110632480A (en) * | 2019-11-03 | 2019-12-31 | 西南交通大学 | 10kV XLPE cable insulation aging state evaluation method |
| CN110726910A (en) * | 2019-11-03 | 2020-01-24 | 西南交通大学 | Medium-high voltage power cable terminal moisture intrusion detection device |
| CN111025104A (en) * | 2019-12-27 | 2020-04-17 | 哈尔滨理工大学 | Temperature-adjustable polymer electric tree growth observation system |
| CN113156288A (en) * | 2021-05-12 | 2021-07-23 | 西南交通大学 | Vehicle-mounted cable terminal partial discharge detection device and method thereof |
| CN114200233A (en) * | 2021-12-06 | 2022-03-18 | 国网浙江省电力有限公司舟山供电公司 | Electric-thermal-vibration combined aging device and method for intermediate joint of cable along with bridge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013036842A (en) * | 2011-08-08 | 2013-02-21 | Sumitomo Electric Ind Ltd | Method for testing cable core for superconductive cables and cooling container |
| CN104820170A (en) * | 2015-03-30 | 2015-08-05 | 中国核电工程有限公司 | Test apparatus for verifying harsh environment resistance of cable |
| CN105093074A (en) * | 2015-07-10 | 2015-11-25 | 西南交通大学 | Test apparatus for measuring the influence of air pressure on the growing property of electrical trees on XLPE cables |
| CN204989073U (en) * | 2015-09-17 | 2016-01-20 | 国网安徽省电力公司电力科学研究院 | Measurable quantity disengages gaseous cable heat aging test chamber |
| CN105548825A (en) * | 2015-12-03 | 2016-05-04 | 四川明星电缆股份有限公司 | High-ultrahigh pressure crosslinked cable de-gassing test device and method, and high-ultrahigh pressure crosslinked cable de-gassing effect test method |
| CN205550308U (en) * | 2016-04-27 | 2016-09-07 | 东莞市巨亚检测仪器设备有限公司 | High temperature and low temperature alternation proof box |
| CN206020206U (en) * | 2016-08-30 | 2017-03-15 | 成都德源电缆有限公司 | A kind of intelligent cable insulating barrier detection platform |
-
2017
- 2017-05-29 CN CN201710394352.3A patent/CN107192928B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013036842A (en) * | 2011-08-08 | 2013-02-21 | Sumitomo Electric Ind Ltd | Method for testing cable core for superconductive cables and cooling container |
| CN104820170A (en) * | 2015-03-30 | 2015-08-05 | 中国核电工程有限公司 | Test apparatus for verifying harsh environment resistance of cable |
| CN105093074A (en) * | 2015-07-10 | 2015-11-25 | 西南交通大学 | Test apparatus for measuring the influence of air pressure on the growing property of electrical trees on XLPE cables |
| CN204989073U (en) * | 2015-09-17 | 2016-01-20 | 国网安徽省电力公司电力科学研究院 | Measurable quantity disengages gaseous cable heat aging test chamber |
| CN105548825A (en) * | 2015-12-03 | 2016-05-04 | 四川明星电缆股份有限公司 | High-ultrahigh pressure crosslinked cable de-gassing test device and method, and high-ultrahigh pressure crosslinked cable de-gassing effect test method |
| CN205550308U (en) * | 2016-04-27 | 2016-09-07 | 东莞市巨亚检测仪器设备有限公司 | High temperature and low temperature alternation proof box |
| CN206020206U (en) * | 2016-08-30 | 2017-03-15 | 成都德源电缆有限公司 | A kind of intelligent cable insulating barrier detection platform |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645452A (en) * | 2018-07-16 | 2018-10-12 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of aircraft electrical power supply system cable multi- scenarios method Aging Test device |
| CN108872797A (en) * | 2018-08-22 | 2018-11-23 | 西南交通大学 | A kind of radial part dampness lesion mimic method of cable |
| CN109490717A (en) * | 2018-12-29 | 2019-03-19 | 云南电网有限责任公司电力科学研究院 | A kind of threephase cable degradation system and method |
| CN110632480A (en) * | 2019-11-03 | 2019-12-31 | 西南交通大学 | 10kV XLPE cable insulation aging state evaluation method |
| CN110726910A (en) * | 2019-11-03 | 2020-01-24 | 西南交通大学 | Medium-high voltage power cable terminal moisture intrusion detection device |
| CN111025104A (en) * | 2019-12-27 | 2020-04-17 | 哈尔滨理工大学 | Temperature-adjustable polymer electric tree growth observation system |
| CN113156288A (en) * | 2021-05-12 | 2021-07-23 | 西南交通大学 | Vehicle-mounted cable terminal partial discharge detection device and method thereof |
| CN113156288B (en) * | 2021-05-12 | 2024-04-16 | 西南交通大学 | Vehicle-mounted cable terminal partial discharge detection device and method thereof |
| CN114200233A (en) * | 2021-12-06 | 2022-03-18 | 国网浙江省电力有限公司舟山供电公司 | Electric-thermal-vibration combined aging device and method for intermediate joint of cable along with bridge |
| CN114200233B (en) * | 2021-12-06 | 2023-10-10 | 国网浙江省电力有限公司舟山供电公司 | Electrical-thermal-vibration combined aging device and method for intermediate joint of bridge-following cable |
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