CN107064691A - A kind of high frequency voltage is superimposed the cable accessory ageing test apparatus of power current - Google Patents
A kind of high frequency voltage is superimposed the cable accessory ageing test apparatus of power current Download PDFInfo
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- CN107064691A CN107064691A CN201710308685.XA CN201710308685A CN107064691A CN 107064691 A CN107064691 A CN 107064691A CN 201710308685 A CN201710308685 A CN 201710308685A CN 107064691 A CN107064691 A CN 107064691A
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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
- G01R31/003—Environmental or reliability tests
-
- 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
-
- 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
The invention discloses the cable accessory ageing test apparatus that a kind of high frequency voltage is superimposed power current, it is related to power cable aging and its detection technique field.The cable accessory ageing test apparatus includes high frequency test voltage generating unit, high frequency voltage test loop unit, power frequency load current simulation generating unit and insulation information monitoring unit；The high frequency electric field that high frequency test voltage generating unit is produced carries out high frequency voltage ageing to XLPE cable annex, the power frequency load current heat that is produced in the unit of high frequency voltage test loop of simulation generating unit carries out heat ageing to XLPE cable annex, the two work simulation actual operating mode of XLPE cable annex simultaneously；Insulation information monitoring unit uses non-invasion monitoring method, realizes the status monitoring of middle pressure XLPE cable annex insulation characterisitic parameter.
Description
Technical field
The invention belongs to power cable aging and its detection technique field, more particularly to a kind of high frequency voltage superposition power frequency
The cable accessory ageing test apparatus of electric current.
Background technology
In recent years, with the continuous expansion of power system capacity, the complexity of power consumer equipment increases therewith, particularly
Some proportions of Large Copacity nonlinear load in system total load constantly rise, and the harmonic problem of power system becomes increasingly to dash forward
Go out.In the presence of the harmonic wave comprising numerous radio-frequency components, the Insulation Problems of power equipment become more serious, cause equipment mistake
Early there are the failures such as unconventional aging, damage.At present, there are a large amount of middle pressure XLPE cable terminals in fortune in power network, and it is electric
Cable terminal accident is to cause the main cause of cable run trip accident, and the influence that high-frequency harmonic is deteriorated to cable terminal insulation
It is extremely obvious.It was verified that press XLPE cable terminal in some tradition under serious harmonic wave effect, its aging substantially aggravates,
Life-span greatly shortens, and even results in the generation of insulation fault.Therefore, a kind of cable of high frequency voltage superposition power current is needed badly attached
Part ageing test apparatus, to press high frequency electric stress of the XLPE cable annex in actual operating mode in simulating, and obtains sample
Temperature characteristic and shelf depreciation collection of illustrative plates in product ageing process, so as to analyze its insulation ag(e)ing situation.
Limited because the output capacity of high frequency exciting transformer is present, during degradation, high frequency exciting transformer exists
When high-frequency and high-voltage is provided, it is difficult to while output can simulate the load current of actual operating mode.At present, domestic and international high frequency voltage ageing
Using methods such as the illumination of high frequency voltage generating means joint, outer heat more than the mentality of designing of experimental rig, cable is difficult to attached
Insulation accelerated degradation of the part under high frequency electric field and power frequency load current collective effect.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of cable accessory aging examination of high frequency voltage superposition power current
Experiment device, presses the actual work for bearing high frequency electric field and power frequency load current in XLPE cable annex running simultaneously in simulation
Condition, realizes the cable accessory degradation under heatronic synergy.
The present invention is to solve above-mentioned technical problem by the following technical solutions：A kind of high frequency voltage is superimposed power frequency electric
The cable accessory ageing test apparatus of stream, including high frequency test voltage generating unit, high frequency voltage test loop unit, power frequency are negative
Charged flow field simulation generating unit and insulation information monitoring unit；The high frequency test voltage generating unit, for producing experiment institute
The high frequency voltage of need is simultaneously supplied to high frequency voltage test loop unit；The high frequency test voltage generating unit and the height
Frequency voltage test circuit units are electrically connected；High frequency voltage test loop unit, for providing test loop；The power frequency is born
Charged flow field simulation generating unit is connected to high frequency voltage test loop unit, using magnetic coupling mode, to simulate generation
Power frequency load current；The insulation information monitoring unit is connected on the ground lead of high frequency voltage test loop unit,
State for monitoring XLPE cable annex insulation characterisitic parameter；In degradation, the high frequency test voltage generating unit
Run simultaneously with power frequency load current simulation generating unit, to reach test sample in the unit of the high frequency voltage test loop
Product bear the purpose of high frequency voltage and power current effect simultaneously.
Further, described high frequency test voltage generating unit include HF signal generator, power amplifier and
High frequency exciting transformer；Described HF signal generator is electrically connected with described power amplifier, and the high-frequency signal occurs
Device produces high frequency low voltage signal, and is amplified by the power amplifier；The power amplifier by protect electric capacity with
The high frequency exciting transformer electrical connection；The protection electric capacity is used for the output impedance for changing power amplifier, to prevent power
Amplifier produces excessive power output；The high frequency exciting transformer, for the high frequency low voltage to amplifying through power amplifier
Signal is boosted with the high-frequency and high-voltage needed for being tested；The high frequency exciting transformer is by protective resistance and first without office
Portion's electrical discharge wire is electrically connected with described high frequency voltage test loop unit；The protective resistance, is encouraged for limiting high frequency
The output current of magnetic transformer and carry out overcurrent protection；Described first without shelf depreciation wire, for by high frequency exciting transformer
The high-frequency and high-voltage of generation leads to high frequency voltage test loop unit.
Further, described power frequency load current simulation generating unit is mutual including 220V power-frequency voltages, centre path current
Sensor and pressure regulator, the input of the pressure regulator are connected with 220V power-frequency voltages, and the output end of the pressure regulator is worn with described
The secondary side connection of core type current transformer；When flowing through power current in the secondary coil of straight-through current transformer, in electricity
Under magnetic induction principle, power current will be produced in the unit of the high frequency voltage test loop；By the output electricity for controlling pressure regulator
Size is pressed, changes the size of current in straight-through current transformer secondary coil, so as to realize high frequency voltage test loop unit
The adjustment on demand of middle electric current.
Further, described high frequency voltage test loop unit is led including XLPE connection cables, second without shelf depreciation
Line and cable termination pilot system, described cable termination pilot system include the first cable termination pilot system and the second cable
Terminal pilot system；Described the first cable termination pilot system and the second cable termination pilot system passes through XLPE connection cables
Connected with second without shelf depreciation wired in series and form test loop.
Further, the first described cable termination pilot system is attached including internal the first cable containing typical defective mounting
Part and the first GIS air chambers；It is attached that the second described cable termination pilot system includes internal the second cable containing typical defective mounting
Part and the 2nd GIS air chambers；Described the first cable accessory and the second cable accessory, for studying typical case's peace in high frequency degradation
Insulation degradation process of the defect under high-frequency and high-voltage effect is filled, its one end inserts the first GIS air chambers and the 2nd GIS air chambers respectively
In, the other end is connected with each other by second without shelf depreciation wire；The first described GIS air chambers and the 2nd GIS air chambers, for arranging
The corona interference that may be introduced during except test loop unit shelf depreciation, the first described GIS air chambers and the 2nd GIS air chambers pass through
XLPE connection cables through straight-through current transformer are connected with each other.
Further, described insulation information monitoring unit includes infrared thermoviewer, HF current transformer and high frequency
Partial discharge monitoring instrument, the HF current transformer includes the first HF current transformer and the second HF current transformer；
Described infrared thermoviewer, the temperature for monitoring the first cable accessory and the second cable accessory surface during high frequency degradation
Spend situation of change；Described the first HF current transformer and the second HF current transformer is respectively engaged with the first GIS air chambers
On the ground lead of the 2nd GIS air chambers, and it is connected respectively with described high frequency partial electric discharge monitor；Described high frequency partial
Discharge monitor, for monitoring during high frequency degradation typical defective mounting in the first cable accessory and the second cable accessory
Shelf depreciation situation of change.
Compared with prior art, the cable accessory degradation dress of high frequency voltage superposition power current provided by the present invention
Put with advantages below：
The high frequency born under high-frequency and high-voltage and power frequency load current is operated in invention emulates middle pressure XLPE cable annex strong
The high frequency electric field that electric field and electric current thermal stress, wherein high-frequency and high-voltage are produced carries out high frequency voltage ageing, work to XLPE cable annex
The heat that frequency load current is produced in the unit of high frequency voltage test loop carries out heat ageing to XLPE cable annex, and the two is simultaneously
The work simulation actual operating mode of XLPE cable annex；And by controlling the height of application tremendously high frequency voltage test circuit units
Frequency high pressure and power frequency load current value, can be achieved the acceleration high frequency electrical ageing test of XLPE cable annex.
Present invention employs the insulation information monitoring method of non-intrusion type, measurement process is safe and reliable, can monitor high frequency
The shelf depreciation response characteristic and its Thermal imaging spectrum of XLPE cable annex typical case defective mounting under high pressure activation；Meanwhile, the height
Each connecting portion of frequency electrical ageing test device does halo-free and pressure processing, effectively reduces high frequency voltage test loop unit
Interference of the corona discharge to XLPE cable annex partial discharge monitoring, reduces the difficulty of Analysis on monitoring data processing.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the accompanying drawing used required in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only one embodiment of the present of invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the cable accessory ageing test apparatus of high frequency voltage superposition power current of the invention
Figure；
Fig. 2 is the internal structure schematic diagram of high frequency voltage test loop of the present invention unit and insulation information monitoring unit；
Wherein：1- high frequency test voltage generating units, 2- high frequency voltages test loop unit, 3- power frequencies load current simulation occurs
Unit, 4- insulation information monitoring units, 5- HF signal generators, 6- power amplifiers, 7- protection electric capacity, 8- high frequency excitation-transformation variables
Depressor, 9- protective resistances, 10- straight-through current transformers, 11- pressure regulators, 12- second is without shelf depreciation wire, the nothings of 13- first
Shelf depreciation wire, the GIS air chambers of 14- the first, 15- the first cable termination pilot systems, 16- the second cable termination pilot systems,
The cable accessories of 17- second, the GIS air chambers of 18- the 2nd, the cable accessories of 19- first, 20- infrared thermoviewers, the high frequency electrics of 21- first
Transformer, 22- high frequency partials electric discharge monitor, the HF current transformers of 23- second, 24-XLPE connection cables.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, technical scheme of this implementation in new is carried out clearly and completely
Description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
As depicted in figs. 1 and 2, the cable accessory aging examination of a kind of high frequency voltage superposition power current provided by the present invention
List occurs for experiment device, including the simulation of high frequency test voltage generating unit 1, high frequency voltage test loop unit 2, power frequency load current
Member 3 and insulation information monitoring unit 4；High frequency test voltage generating unit 1 is electrically connected with high frequency voltage test loop unit 2；Work
Frequency load current simulation generating unit 3 is connected to high frequency voltage test loop unit 2, using magnetic coupling mode, to simulate production
Raw power frequency load current；Insulation information monitoring unit 4 is connected on the ground lead of high frequency voltage test loop unit 2；Old
When changing experiment, high frequency test voltage generating unit 1 and power frequency load current simulation generating unit 3 are run simultaneously, to reach experiment
Sample bears the purpose of high frequency voltage and power current effect simultaneously.
High frequency test voltage generating unit 1 includes HF signal generator 5, power amplifier 6 and high frequency excitation transformation
Device 8；HF signal generator 5 is electrically connected with power amplifier 6, and HF signal generator 5 produces high frequency low voltage signal, and passes through
Power amplifier 6 is amplified；Power amplifier 6 is by protecting electric capacity 7 to be electrically connected with high frequency exciting transformer 8；Protect electric capacity 7
Capacitance be not more than 1.13 μ F, the output impedance for changing power amplifier 6, to prevent power amplifier 6 from producing excessive
Power output；High frequency exciting transformer 8, for being boosted the high frequency low voltage signal amplified through power amplifier 6 to obtain
Required high-frequency and high-voltage must be tested；High frequency exciting transformer 8 is by protective resistance 9 and first without shelf depreciation wire 13 and high frequency
Voltage test circuit units 2 are electrically connected；Protective resistance 9 uses water resistance, and the high pressure exported by high frequency exciting transformer 8 multiplies
Its resistance is selected with 1.5 Ω of current-limiting resistance coefficient/V, protective resistance 9 be used for the output current for limiting high frequency exciting transformer 8 and
Carry out overcurrent protection；First without shelf depreciation wire 13, and the high-frequency and high-voltage for high frequency exciting transformer 8 to be produced leads to high frequency
Voltage test circuit units 2.
Power frequency load current simulation generating unit 3 includes 220V power-frequency voltages, straight-through current transformer 10 and pressure regulator
11, the input of pressure regulator 11 is connected with 220V power-frequency voltages, output end and the straight-through current transformer 10 of pressure regulator 11
Secondary side is connected；It is high under electromagnetic induction principle when flowing through power current in the secondary coil of straight-through current transformer 10
Power current will be produced in frequency voltage test circuit units 2；By controlling the output voltage size of pressure regulator 11, change punching
Size of current in the secondary coil of current transformer 10, so as to realize the tune on demand of electric current in high frequency voltage test loop unit 2
It is whole.
It is whole without shelf depreciation wire 12 and cable that high frequency voltage test loop unit 2 includes XLPE connection cables 24, second
Pilot system is held, described cable termination pilot system includes the first cable termination pilot system 15 and the second cable termination is tested
System 16；Described the first cable termination pilot system 15 and the second cable termination pilot system 16 passes through XLPE connection cables 24
It is connected in series with second without shelf depreciation wire 12 and forms test loop；XLPE connection cables 24 are one section 10-15 meters
ZR-YJLV22-26/35kV type XLPE cables.
First cable termination pilot system 15 includes internal the first cable accessory 19 and the first GIS containing typical defective mounting
Air chamber 14；Second cable termination pilot system includes internal the second cable accessory 17 and the 2nd GIS gas containing typical defective mounting
Room 18；The first GIS air chambers 14 and the 2nd GIS air chambers 18 are inserted in one end of first cable accessory 19 and the second cable accessory 17 respectively
In, the other end is connected with each other by second without shelf depreciation wire 12；First GIS air chambers 14 and the 2nd GIS air chambers 18 are by wearing
The XLPE connection cables 24 for crossing the center of straight-through current transformer 10 are connected with each other, the two ends difference grafting of XLPE connection cables 24
To the first GIS air chambers 14 and the 2nd GIS air chambers 18；XLPE connection cables 24 are centrally formed through straight-through current transformer 10
Magnetic coupling loop；First is electrically connected without shelf depreciation wire 13 with the second middle part without shelf depreciation wire 12；High-frequency electrical
Each metallic connection parts position in test loop unit 2 is pressed to use through pressing the high-voltage connection terminal with shielding processing, to prevent
Corona discharge is produced during application high-frequency and high-voltage；First cable accessory 19 and the second cable accessory 17 are outdoor eventually using prefabricated
End.
The information monitoring unit 4 that insulate includes infrared thermoviewer 20, HF current transformer and high frequency partial electric discharge monitoring
Instrument 22, HF current transformer includes the first HF current transformer 21 and the second HF current transformer 23；Infrared thermoviewer
20, the temperature change feelings for monitoring the first cable accessory 19 and the surface of the second cable accessory 17 during high frequency degradation
Condition；First HF current transformer 21 and the second HF current transformer 23 are respectively engaged with the first GIS air chambers 14 and the 2nd GIS
On the ground lead of air chamber 18, and it is connected respectively with high frequency partial electric discharge monitor 22；High frequency partial electric discharge monitor 22, is used for
The shelf depreciation for monitoring typical defective mounting in the first cable accessory 19 and the second cable accessory during high frequency degradation becomes
Change situation；Insulation information monitoring unit 4 uses non-invasion monitoring method, realizes the first cable accessory 19 and the second cable is attached
The status monitoring of the insulation characterisitic parameter of part 17.
In degradation, regulation HF signal generator 5 makes it export high frequency low voltage signal, and high frequency low voltage signal passes through
After power amplifier 6 amplifies, high frequency exciting transformer 8 is sent to, the input voltage parameter of regulation high frequency exciting transformer 8 makes
Its output frequency is that 10kHz, amplitude are 15kV（Virtual value）High-frequency and high-voltage, by first without shelf depreciation wire 13 by high frequency
Voltage is led to high frequency voltage test loop unit 2；The size of the output voltage of pressure regulator 11 is adjusted simultaneously, changes centre path current mutual
The input voltage of sensor 10, makes the power current that 200A is produced in high frequency voltage test loop unit 2；Now, first is realized
The cable accessory 17 of cable accessory 19 and second is operated in high frequency voltage and lower the be subjected to high frequency forceful electric power of power current effect simultaneously
Field and the simulation of electric current thermal stress；Infrared thermoviewer 20 in insulation information monitoring unit 4 monitors the first cable accessory in real time
19 and the temperature variations on the surface of the second cable accessory 17；High frequency partial electric discharge monitor 22 monitors the first cable accessory in real time
19 and second typical defective mounting in cable accessory 17 shelf depreciation situation of change.
Above disclosed is only the embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, can readily occur in change or modification, all
It should be included within the scope of the present invention.
Claims (10)
1. a kind of high frequency voltage is superimposed the cable accessory ageing test apparatus of power current, it is characterised in that：Including high frequency experiment
Voltage generating unit（1）, high frequency voltage test loop unit（2）, power frequency load current simulation generating unit（3）With insulation information
Monitoring unit（4）；The high frequency test voltage generating unit（1）, for producing the high frequency voltage needed for testing and being supplied to institute
State high frequency voltage test loop unit（2）；The high frequency test voltage generating unit（1）It is single with the high frequency voltage test loop
Member（2）Electrical connection；High frequency voltage test loop unit（2）, for providing test loop；The power frequency load current simulation
Generating unit（3）It is connected to high frequency voltage test loop unit（2）, using magnetic coupling mode, to simulate generation power frequency
Load current；The insulation information monitoring unit（4）It is connected in high frequency voltage test loop unit（2）Ground lead
On, the state for monitoring XLPE cable annex insulation characterisitic parameter；In degradation, the high frequency test voltage occurs single
Member（1）Generating unit is simulated with the power frequency load current（3）Run simultaneously, to reach high frequency voltage test loop unit
（2）In test specimen simultaneously bear high frequency voltage and power current effect purpose.
2. high frequency voltage as claimed in claim 1 is superimposed the cable accessory ageing test apparatus of power current, it is characterised in that：
Described high frequency test voltage generating unit（1）Including HF signal generator（5）, power amplifier（6）And high frequency excitation
Transformer（8）；Described HF signal generator（5）With described power amplifier（6）Electrical connection；The power amplifier
（6）By protecting electric capacity（7）With the high frequency exciting transformer（8）Electrical connection；The high frequency exciting transformer（8）Pass through protection
Resistance（9）With first without shelf depreciation wire（13）With described high frequency voltage test loop unit（2）It is electrically connected.
3. high frequency voltage as claimed in claim 2 is superimposed the cable accessory ageing test apparatus of power current, it is characterised in that：
Described protective resistance（9）Using water resistance, its resistance presses high frequency exciting transformer（8）The high pressure of output is multiplied by current-limiting resistance system
Several 1.5 Ω/V is selected.
4. high frequency voltage as claimed in claim 1 is superimposed the cable accessory ageing test apparatus of power current, it is characterised in that：
Described power frequency load current simulation generating unit（3）Including 220V power-frequency voltages, straight-through current transformer（10）And pressure regulation
Device（11）, the pressure regulator（11）Input be connected with 220V power-frequency voltages, the pressure regulator（11）Output end with it is described
Straight-through current transformer（10）Secondary side connection.
5. high frequency voltage as claimed in claim 4 is superimposed the cable accessory ageing test apparatus of power current, it is characterised in that：
Described high frequency voltage test loop unit（2）Including XLPE connection cables（24）, second without shelf depreciation wire（12）And electricity
Cable terminal pilot system, described cable termination pilot system includes the first cable termination pilot system（15）It is whole with the second cable
Hold pilot system（16）；The first described cable termination pilot system（15）With the second cable termination pilot system（16）Pass through
XLPE connection cables（24）With second without shelf depreciation wire（12）It is connected in series and forms test loop.
6. high frequency voltage as claimed in claim 5 is superimposed the cable accessory ageing test apparatus of power current, it is characterised in that：
The XLPE connection cables（24）For one section 10-15 meters of ZR-YJLV22-26/35kV type XLPE cables.
7. high frequency voltage as claimed in claim 5 is superimposed the cable accessory ageing test apparatus of power current, it is characterised in that：
The first described cable termination pilot system（15）Including inside the first cable accessory containing typical defective mounting（19）With first
GIS air chambers（14）；The second described cable termination pilot system（16）Including inside, the second cable containing typical defective mounting is attached
Part（17）With the 2nd GIS air chambers（18）；The first described cable accessory（19）With the second cable accessory（17）One end insert respectively
Enter the first GIS air chambers（14）With the 2nd GIS air chambers（18）, the other end is by second without shelf depreciation wire（12）It is connected with each other；
The first described GIS air chambers（14）With the 2nd GIS air chambers（18）By through straight-through current transformer（10）XLPE connections
Cable（24）It is connected with each other.
8. the high frequency voltage as described in claim 5 or 7 is superimposed the cable accessory ageing test apparatus of power current, its feature exists
In：High frequency voltage test loop unit（2）In each part metallic connection parts position using through pressing and shielding processing
High-voltage connection terminal is attached.
9. high frequency voltage as claimed in claim 7 is superimposed the cable accessory ageing test apparatus of power current, it is characterised in that：
First cable accessory（19）With the second cable accessory（17）Use prefabricated outdoor terminal.
10. high frequency voltage as claimed in claim 7 is superimposed the cable accessory ageing test apparatus of power current, its feature exists
In：Described insulation information monitoring unit（4）Including infrared thermoviewer（20）, HF current transformer and high frequency partial electric discharge
Monitor（22）, the HF current transformer include the first HF current transformer（21）With the second HF current transformer
（23）；The first described HF current transformer（21）With the second HF current transformer（23）It is respectively engaged with the first GIS gas
Room（14）With the 2nd GIS air chambers（18）Ground lead on, and the monitor that discharged respectively with described high frequency partial（22）Connection.
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| CN107607821A (en) * | 2017-10-25 | 2018-01-19 | 广西电网有限责任公司电力科学研究院 | A kind of controllable middle pressure XLPE cable ageing test apparatus of harmonic content |
| CN107677943A (en) * | 2017-10-25 | 2018-02-09 | 广西电网有限责任公司电力科学研究院 | A kind of High Voltage XLPE Power Cable and its annex fundamental wave superposition multiple-harmonic experimental rig |
| CN108387827A (en) * | 2018-04-23 | 2018-08-10 | 天津大学 | A kind of electric branch characteristic test device under industrial frequency superimposed harmonic voltage and method |
| CN109406967A (en) * | 2018-11-28 | 2019-03-01 | 杭州电力设备制造有限公司 | High-tension switch cabinet local discharge on-line monitoring device and method |
| CN109521306A (en) * | 2018-12-29 | 2019-03-26 | 广东电网有限责任公司 | A kind of thermal cycling ageing temprature control method, device, equipment and storage medium |
| CN109901037A (en) * | 2019-04-04 | 2019-06-18 | 中国科学院电工研究所 | High frequency transformer factory insulation test voltage measuring method based on the insulated with material service life |
| CN111880030A (en) * | 2020-07-13 | 2020-11-03 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Cable termination high frequency harmonic electric heat aging test 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 |
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