CN110045230A - A kind of analogy method and system for high-voltage crosslinking sea cable internal discharge - Google Patents
A kind of analogy method and system for high-voltage crosslinking sea cable internal discharge Download PDFInfo
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- CN110045230A CN110045230A CN201910313699.XA CN201910313699A CN110045230A CN 110045230 A CN110045230 A CN 110045230A CN 201910313699 A CN201910313699 A CN 201910313699A CN 110045230 A CN110045230 A CN 110045230A
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- 238000007599 discharging Methods 0.000 claims description 44
- 238000010791 quenching Methods 0.000 claims description 30
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- 238000004088 simulation Methods 0.000 claims description 30
- 238000009413 insulation Methods 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000004020 conductor Substances 0.000 claims description 18
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- 239000003990 capacitor Substances 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
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- 229910052737 gold Inorganic materials 0.000 description 2
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- 239000013535 sea water Substances 0.000 description 2
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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
- G01R31/08—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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- 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 a kind of analogy methods and system for high-voltage crosslinking sea cable internal discharge, and wherein method includes: to apply the fitted signal with typical defect discharge characteristic to local discharge band electro-detection sensor measure loop by analog signal generator；The analog signal generator is adjusted, so that the fitted signal with typical defect discharge characteristic that the analog signal generator applies reaches typical discharges inside simulated high-pressure crosslinking sea cable.
Description
Technical field
The present invention relates to technical field high-tension cable Condition-Based Maintenance Technology fields, are used for high pressure more particularly, to one kind
It is crosslinked the analogy method and system of sea cable internal discharge.
Background technique
Although high-pressure undersea cable system and high pressure land cable system are all used for power transmission, high-pressure undersea cable system and high pressure
There are significant differences for land cable system, are mainly reflected in internal structure, Contact patch and running environment, furthermore high-pressure undersea cable segment length
(i.e. continuous length between attachment) is typically much deeper than high pressure land cable route.
The single-core crosslinked sea cable of high pressure and the single-core crosslinked land cable otherness in internal structure of high pressure: poly- second is crosslinked with 500kV
Alkene insulate for submarine cable and overland cable, to meet undersea running environment, from the inside to the outside on structure sheaf, is crosslinked sea cable ratio
Crosslinking land cable light unit layer, liner layer, armor and polypropylene rope more than the outside of oversheath mix the outer quilt of pitch
Layer.Increase optical electrical multiplexing of transmission of the light unit layer to realize submarine cable；Increase liner layer to realize light unit and armouring
Between buffering, dottle pin；Increase armor to increase the mechanical strength of live cable laying operation；Increase serving to realize that anti-seawater is rotten
Erosion and resistance to construction abrasion.In addition, being different from crosslinking land cable, sea cable, as protective metal shell material, has radial resistance using metal
Outlet capacity, and it is resistant to chemical attack under marine environment.
The single-core crosslinked sea cable of high pressure and the single-core crosslinked land cable otherness on earthing mode of high pressure: 110kV and the above voltage
The high pressure land cable route of grade is single-core cable.Because the magnetic line of force that cable metal sheath is generated with alternating current in conductor is mutually cut with scissors
Chain makes it higher induced voltage occur, therefore need to take grounding measures.In general, the metal sheath of the land short-term road (500m) cable is adopted
It is directly grounded with one end, the mode that the other end is grounded through gap or protective resistance；The metal of the land long transmission line (1000m or more) cable protects
Layer is then in such a way that three-phase is segmented cross interconnected two-terminal-grounding.It, can not be in sea cable line due to the particularity of sea cable running environment
The interconnection arrangement of coordinated transposition as being similar to land cable and ground connection are carried out among road.High pressure single sea cable is generally longer, in order to limit
The induced voltage of long range sea cable processed is implemented interconnection in lead sheath and metal armouring both ends and is directly grounded, the lead sheath of interlude
With metal armouring be connected with each other mode then according to the actual situation with overvoltage operating condition may using any be shorted, segmentation be shorted or
It is not shorted.Regardless of which kind of situation, the lead sheath of high pressure single sea cable and metal armouring all will constitute reflux with seawater (the earth) and lead to
Road.
In short, Partial Discharge Detection is as a kind of Electric Power Equipment Insulation state-detection means, it is necessary to specific with measurand
In conjunction with competence exertion effectiveness.And sea cable and difference of the land cable in measurand feature, it necessarily will be to partial discharge detection technique method
Establishment, technological means selection cause corresponding influence.Though shelf depreciation test is not included in the detection of submarine cable standard regulation
Pilot project, but shelf depreciation is both as high pressure, the main forms of super-pressure submarine cable line insulation failure early stage
The main reason for causing insulation ag(e)ing, and be the main characteristic parameters for characterizing insulation status.If towards carrying out in fortune submarine cable
Partial Discharge Detection further excavates shelf depreciation physical phenomenon present in cross linked insulation submarine cable ontology and connector, is
Currently judge intuitive, the ideal and effective condition detection method of the cable run operating status and quality of insulation.It is domestic at present
There are no the internal discharge simulators and method that are directed to high-voltage crosslinking sea cable, cause laboratory Partial Discharge Detection research nothing
The direct simulated high-pressure crosslinking sea cable internal discharge physical phenomenon of method and characteristic discharge signal, also can not effectively support high-voltage crosslinking extra large
The in-depth of cable partial discharge electrification detection technology researchs and develops.
Therefore, it is necessary to a kind of technologies, to realize the simulation to high-voltage crosslinking sea cable internal discharge.
Summary of the invention
Technical solution of the present invention provides a kind of analogy method for high-voltage crosslinking sea cable internal discharge, how right to solve
The technology that high-voltage crosslinking sea cable internal discharge is simulated.
To solve the above-mentioned problems, the present invention provides a kind of analogy method for high-voltage crosslinking sea cable internal discharge,
The described method includes:
Being applied by analog signal generator to local discharge band electro-detection sensor measure loop has typical defect
The fitted signal of discharge characteristic；
The analog signal generator is adjusted, so that the described of analog signal generator application has typical lack
The fitted signal for falling into discharge characteristic reaches typical discharges inside simulated high-pressure crosslinking sea cable.
Preferably, the fitted signal of the typical defect discharge characteristic includes: the high-voltage crosslinking sea cable insulating inner gas
Gap electric discharge, the insulative air gap electric discharge of high-voltage crosslinking sea cable contact high-pressure conductor, high-voltage crosslinking sea cable insulating inner gold
Belong to impurity electric discharge, high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge and high-voltage crosslinking sea cable insulating inner electricity
Tree discharge.
Preferably, the parameter of the high-voltage crosslinking sea cable insulating inner bubble-discharge includes magnitude range of discharging: 1~
5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group,
Fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the insulative air gap electric discharge of the high-voltage crosslinking sea cable contact high-pressure conductor includes the magnitude that discharges
Range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number model
It encloses: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the high-voltage crosslinking sea cable insulating inner metal impurities electric discharge includes magnitude range of discharging: 1
~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3
Group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge includes: electric discharge magnitude range:
1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3
Group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the high-voltage crosslinking sea cable insulating inner electric branch electric discharge includes magnitude range of discharging: 1~
5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group,
Fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the shelf depreciation live detection sensor measure loop is sensed by coaxial cable across high-frequency current
Device HFCT forms closed circuit to realize that proximal end interference signal interferes the simulation of partial discharge detection High Frequency Current Sensor HFCT；It is wide
The wrapped capacity coupler of copper strips is to the high-voltage crosslinking sea cable ontology or attachment injection to realize that far end interfering signal examines partial discharge
Survey the simulation interference of High Frequency Current Sensor.
Preferably, operation electromagnetic environment in high-voltage crosslinking sea cable scene is with the fitting of the typical defect discharge characteristic
Signal is independent or the fitted signal mixing output of a variety of typical defect discharge characteristics is realized.
Based on another aspect of the present invention, a kind of simulation system for high-voltage crosslinking sea cable internal discharge is provided, it is described
System includes:
Analogue unit, for being applied by analog signal generator to local discharge band electro-detection sensor measure loop
Fitted signal with typical defect discharge characteristic；
Unit is adjusted, for adjusting the analog signal generator, so that the analog signal generator applied
The fitted signal with typical defect discharge characteristic reaches typical discharges inside simulated high-pressure crosslinking sea cable.
Preferably, the fitted signal of the typical defect discharge characteristic includes: the high-voltage crosslinking sea cable insulating inner gas
Gap electric discharge, the insulative air gap electric discharge of high-voltage crosslinking sea cable contact high-pressure conductor, high-voltage crosslinking sea cable insulating inner gold
Belong to impurity electric discharge, high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge and high-voltage crosslinking sea cable insulating inner electricity
Tree discharge.
Preferably, the parameter of the high-voltage crosslinking sea cable insulating inner bubble-discharge includes magnitude range of discharging: 1~
5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group,
Fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the insulative air gap electric discharge of the high-voltage crosslinking sea cable contact high-pressure conductor includes the magnitude that discharges
Range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number model
It encloses: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the high-voltage crosslinking sea cable insulating inner metal impurities electric discharge includes magnitude range of discharging: 1
~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3
Group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge includes: electric discharge magnitude range:
1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3
Group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the high-voltage crosslinking sea cable insulating inner electric branch electric discharge includes magnitude range of discharging: 1~
5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group,
Fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the shelf depreciation live detection sensor measure loop is sensed by coaxial cable across high-frequency current
Device HFCT forms closed circuit to realize that proximal end interference signal interferes the simulation of partial discharge detection High Frequency Current Sensor HFCT；It is wide
The wrapped capacity coupler of copper strips is to the high-voltage crosslinking sea cable ontology or attachment injection to realize that far end interfering signal examines partial discharge
Survey the simulation interference of High Frequency Current Sensor.
Preferably, operation electromagnetic environment in high-voltage crosslinking sea cable scene is with the fitting of the typical defect discharge characteristic
Signal is independent or the fitted signal mixing output of a variety of typical defect discharge characteristics is realized.
Technical solution of the present invention provides a kind of analogy method for high-voltage crosslinking sea cable internal discharge, by putting to part
Electro-detection circuit injects simulated high-pressure cable and runs electromagnetic signal, reaches the equivalent simulation mesh to high-voltage crosslinking sea cable internal discharge
's.
Detailed description of the invention
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by:
Fig. 1 is the analogy method process for high-voltage crosslinking sea cable internal discharge according to the preferred embodiment for the present invention
Figure；
Fig. 2 is electricity-phase correlation map figure according to the insulating inner bubble-discharge of the preferred embodiment for the present invention；
Fig. 3 is electricity-phase phase according to the insulative air gap electric discharge of the contact high-pressure conductor of the preferred embodiment for the present invention
Close map figure；
Fig. 4 is the electricity-phase correlation map to be discharged according to the insulating inner metal impurities of the preferred embodiment for the present invention
Figure；
Fig. 5 is electricity-phase according to the bounce electric discharge of the high-pressure conductor surface metal particle of the preferred embodiment for the present invention
Related map figure；
Fig. 6 is electricity-phase correlation figure according to the insulation outer semiconducting layer cracking electric discharge of the preferred embodiment for the present invention
Spectrogram；
Fig. 7 is the electricity-phase correlation map figure to be discharged according to the insulating inner electric branch of the preferred embodiment for the present invention；
Fig. 8 is according to the preferred embodiment for the present invention in typical case in high-voltage crosslinking sea cable shelf depreciation live detection
Portion's Discharge Simulation implementation method schematic diagram；And
Fig. 9 is the simulation system structure for high-voltage crosslinking sea cable internal discharge according to the preferred embodiment for the present invention
Figure.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is a kind of analogy method stream for high-voltage crosslinking sea cable internal discharge according to the preferred embodiment for the present invention
Cheng Tu.The application embodiment proposes a kind of analogy method of high-voltage crosslinking sea cable internal discharge, and the application is by putting part
Electro-detection circuit injects simulated high-pressure cable and runs electromagnetic signal, has filled up the prior art and has been directed to high-voltage crosslinking sea cable not yet
The method of internal discharge simulation, causing laboratory Partial Discharge Detection research can not put inside direct simulated high-pressure crosslinking sea cable
The technological gap of electric physical phenomenon and characteristic discharge signal effectively supports the in-depth of high-voltage crosslinking sea cable partial discharge electrification detection technology
Research and development.As shown in Figure 1, a kind of analogy method for high-voltage crosslinking sea cable internal discharge, method include:
Preferably, in step 101: by analog signal generator to local discharge band electro-detection sensor measure loop
Apply the fitted signal with typical defect discharge characteristic.
Preferably, in step 102: analog signal generator is adjusted, so that analog signal generator application has
The fitted signal of typical defect discharge characteristic reaches typical discharges inside simulated high-pressure crosslinking sea cable.
The application is by way of analog signal generator is using unlike signal infusion circuit or spatial electromagnetic wave radiation
Fitted signal with typical defect discharge characteristic is imposed to local discharge band electro-detection sensor measure loop, and passes through adjusting
Analog signal generator reaches typical discharges inside simulated high-pressure crosslinking sea cable, to really restore high-pressure undersea cable in laboratory
The feature electric signal that internal typical defect excites electric discharge to generate in high field intensity.
Fig. 8 is according to the preferred embodiment for the present invention in typical case in high-voltage crosslinking sea cable shelf depreciation live detection
Portion's simulating discharge schematic diagram.As shown in figure 8,1- programmable signal device, 2- analog signal injection coupled capacitor, 3- are special
Reference number detection coupled capacitor, 4- high-pressure undersea cable factory connector, 5- high-pressure cross-linking cable, 6- analog signal inject copper strips, 7-
Analog signal injection coaxial cable, 8- partial discharge detection HFCT, 9- partial discharge detection equipment, 10- partial discharge detection signal cable.
Preferably, the fitted signal of typical defect discharge characteristic includes: high-voltage crosslinking sea cable insulating inner bubble-discharge, height
The insulative air gap electric discharge of pressure crosslinking sea cable contact high-pressure conductor, the electric discharge of high-voltage crosslinking sea cable insulating inner metal impurities, high pressure are handed over
Join sea cable insulation outer semiconducting layer cracking electric discharge and the electric discharge of high-voltage crosslinking sea cable insulating inner electric branch.
Preferably, the parameter of high-voltage crosslinking sea cable insulating inner bubble-discharge includes magnitude range of discharging: 1~5000pC,
Discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group, fixed phase
Frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.The simulation partial discharge of the application is believed
It number is exported by high-pressure cross-linking cable typical case Partial discharge signal simulation algorithm using sophisticated electronics, with impulse discharge amount amplitude
Stablize, repetitive rate it is good, and the frequency that discharges, discharge phase, discharge time interval, discharge capacity gear can all be adjusted flexibly.The application
The defects of with programmable signal generating device simulation output cross linked insulation internal cleavage, air gap caused shelf depreciation, that is, insulate
Internal air gap electric discharge.
The application is with the cross linked insulation internal cleavage of high-pressure conductor, air gap etc. on programmable signal generating device simulating contact
Shelf depreciation caused by defect, i.e. the insulative air gap electric discharge of contact high-pressure conductor.Preferably, high-voltage crosslinking sea cable contact high pressure is led
The parameter of the insulative air gap electric discharge of body includes electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps,
Discharge phase range: 0~360 °, signal cluster number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0
~300s, discharge quenching duration range: 0~300s.
The application contains metallic conduction impurity defect with programmable signal generating device simulation cross linked insulation insulating inner and draws
The shelf depreciation risen, i.e. insulating inner metal impurities are discharged.Preferably, high-voltage crosslinking sea cable insulating inner metal impurities discharge
Parameter includes electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~
360 °, signal cluster number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching
Duration range: 0~300s.
The application is simulated with programmable signal generating device locally puts caused by cross linked insulation outer semiconducting layer cracking defect
Electricity, i.e. insulation outer semiconducting layer cracking electric discharge.Preferably, the parameter packet of high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge
It includes: electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, letter
Number cluster number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration model
It encloses: 0~300s.
The application is with shelf depreciation caused by electric branch defect inside programmable signal generating device simulation cross linked insulation.It is excellent
The parameter of selection of land, the electric discharge of high-voltage crosslinking sea cable insulating inner electric branch includes magnitude range of discharging: 1~5000pC, discharge pulse
Density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group, fixed phase frequency
50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, shelf depreciation live detection sensor measure loop passes through High Frequency Current Sensor by coaxial cable
HFCT forms closed circuit to realize that proximal end interference signal interferes the simulation of partial discharge detection High Frequency Current Sensor HFCT；Wide copper
With wrapped capacity coupler to high-voltage crosslinking sea cable ontology or attachment injection to realize far end interfering signal to partial discharge detection high frequency
The simulation of current sensor is interfered.
Preferably, operation electromagnetic environment in high-voltage crosslinking sea cable scene is independent with the fitted signal of typical defect discharge characteristic
Or the fitted signal mixing output of a variety of typical defect discharge characteristics is realized.The high-tension cable scene of the application runs electromagnetic environment
It is to be realized with the independence or mixing output of five quasi-representatives simulation discharge signal.
The application coaxial cable passes through High Frequency Current Sensor (HFCT) and forms closed circuit to realize proximal end interference signal
Simulation interference to partial discharge detection HFCT；The wide wrapped capacity coupler of copper strips is to cable body or attachment injection to realize distal stem
Signal is disturbed to interfere the simulation of partial discharge detection HFCT.
A kind of analogy method for high-voltage crosslinking sea cable internal discharge that the application embodiment proposes, embodiment are easy；
Stability is good；The internal discharge feature equivalence of the application and true type defect is high；The application is manufactured suitable for high-voltage crosslinking sea cable
Partial Discharge Detection characteristic signal simulation source in stage electrical test.
Fig. 2 is electricity-phase correlation map figure according to the insulating inner bubble-discharge of the preferred embodiment for the present invention.
Fig. 3 is electricity-phase phase according to the insulative air gap electric discharge of the contact high-pressure conductor of the preferred embodiment for the present invention
Close map figure.
Fig. 4 is the electricity-phase correlation map to be discharged according to the insulating inner metal impurities of the preferred embodiment for the present invention
Figure.
Fig. 5 is electricity-phase according to the bounce electric discharge of the high-pressure conductor surface metal particle of the preferred embodiment for the present invention
Related map figure.
Fig. 6 is electricity-phase correlation figure according to the insulation outer semiconducting layer cracking electric discharge of the preferred embodiment for the present invention
Spectrogram.
Fig. 7 is the electricity-phase correlation map figure to be discharged according to the insulating inner electric branch of the preferred embodiment for the present invention.
Fig. 9 is the simulation system structure for high-voltage crosslinking sea cable internal discharge according to the preferred embodiment for the present invention
Figure.As shown in figure 9, a kind of simulation system for high-voltage crosslinking sea cable internal discharge, system include:
Analogue unit 901, for passing through analog signal generator to local discharge band electro-detection sensor measure loop
Apply the fitted signal with typical defect discharge characteristic.
Unit 902 is adjusted, for adjusting analog signal generator, so that analog signal generator application has allusion quotation
The fitted signal of type defect discharge characteristic reaches typical discharges inside simulated high-pressure crosslinking sea cable.
Preferably, the fitted signal of typical defect discharge characteristic includes: high-voltage crosslinking sea cable insulating inner bubble-discharge, height
The insulative air gap electric discharge of pressure crosslinking sea cable contact high-pressure conductor, the electric discharge of high-voltage crosslinking sea cable insulating inner metal impurities, high pressure are handed over
Join sea cable insulation outer semiconducting layer cracking electric discharge and the electric discharge of high-voltage crosslinking sea cable insulating inner electric branch.
Preferably, the parameter of high-voltage crosslinking sea cable insulating inner bubble-discharge includes magnitude range of discharging: 1~5000pC,
Discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group, fixed phase
Frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of the insulative air gap electric discharge of high-voltage crosslinking sea cable contact high-pressure conductor includes magnitude range of discharging:
1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3
Group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of high-voltage crosslinking sea cable insulating inner metal impurities electric discharge includes magnitude range of discharging: 1~
5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group,
Fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge includes: electric discharge magnitude range: 1~
5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group,
Fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, the parameter of high-voltage crosslinking sea cable insulating inner electric branch electric discharge includes magnitude range of discharging: 1~
5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number range: 1-3 group,
Fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~300s.
Preferably, shelf depreciation live detection sensor measure loop passes through High Frequency Current Sensor by coaxial cable
HFCT forms closed circuit to realize that proximal end interference signal interferes the simulation of partial discharge detection High Frequency Current Sensor HFCT；Wide copper
With wrapped capacity coupler to high-voltage crosslinking sea cable ontology or attachment injection to realize far end interfering signal to partial discharge detection high frequency
The simulation of current sensor is interfered.
Preferably, operation electromagnetic environment in high-voltage crosslinking sea cable scene is independent with the fitted signal of typical defect discharge characteristic
Or the fitted signal mixing output of a variety of typical defect discharge characteristics is realized.
900 present invention of simulation system for high-voltage crosslinking sea cable internal discharge of the preferred embodiment for the present invention is preferred real
The analogy method 100 for high-voltage crosslinking sea cable internal discharge for applying mode is corresponding, is no longer repeated herein.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
Defined by subsidiary Patent right requirement, in addition to the present invention other embodiments disclosed above equally fall in it is of the invention
In range.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
It releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.
Claims (18)
1. a kind of analogy method for high-voltage crosslinking sea cable internal discharge, which comprises
Being applied by analog signal generator to local discharge band electro-detection sensor measure loop has typical defect electric discharge
The fitted signal of feature；
The analog signal generator is adjusted, so that described the putting with typical defect of analog signal generator application
The fitted signal of electrical feature reaches typical discharges inside simulated high-pressure crosslinking sea cable.
2. according to the method described in claim 1, the fitted signal of the typical defect discharge characteristic includes: the high-voltage crosslinking
Sea cable insulating inner bubble-discharge, the insulative air gap electric discharge of high-voltage crosslinking sea cable contact high-pressure conductor, the high-voltage crosslinking
The electric discharge of sea cable insulating inner metal impurities, high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge and the high-voltage crosslinking
The electric discharge of sea cable insulating inner electric branch.
3. discharging according to the method described in claim 2, the parameter of the high-voltage crosslinking sea cable insulating inner bubble-discharge includes
Magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster number
Range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~
300s。
4. according to the method described in claim 2, the ginseng of the insulative air gap electric discharge of high-voltage crosslinking sea cable contact high-pressure conductor
Number includes electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~
360 °, signal cluster number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching
Duration range: 0~300s.
5. according to the method described in claim 2, the high-voltage crosslinking sea cable insulating inner metal impurities electric discharge parameter include,
Electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster
Group's number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~
300s。
6. according to the method described in claim 2, the parameter packet of high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge
It includes: electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, letter
Number cluster number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration model
It encloses: 0~300s.
7. according to the method described in claim 2, the parameter of high-voltage crosslinking sea cable insulating inner electric branch electric discharge includes putting
Charge value range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster
Number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~
300s。
8. according to the method described in claim 1, the shelf depreciation live detection sensor measure loop passes through coaxial cable
Closed circuit is formed across High Frequency Current Sensor HFCT to realize proximal end interference signal to partial discharge detection High Frequency Current Sensor
The simulation of HFCT is interfered；The wide wrapped capacity coupler of copper strips is to the high-voltage crosslinking sea cable ontology or attachment injection to realize distal end
Interference signal interferes the simulation of partial discharge detection High Frequency Current Sensor.
9. according to the method described in claim 1, high-voltage crosslinking sea cable scene operation electromagnetic environment is with described typical scarce
Fall into discharge characteristic fitted signal is independent or the fitted signal mixing output of a variety of typical defect discharge characteristics is realized.
10. a kind of simulation system for high-voltage crosslinking sea cable internal discharge, the system comprises:
Analogue unit, for having by analog signal generator to the application of local discharge band electro-detection sensor measure loop
The fitted signal of typical defect discharge characteristic；
Unit is adjusted, for adjusting the analog signal generator, so that analog signal generator application is described
Fitted signal with typical defect discharge characteristic reaches typical discharges inside simulated high-pressure crosslinking sea cable.
11. system according to claim 10, the fitted signal of the typical defect discharge characteristic includes: that the high pressure is handed over
Join sea cable insulating inner bubble-discharge, the insulative air gap electric discharge of high-voltage crosslinking sea cable contact high-pressure conductor, high pressure friendship
Join the electric discharge of sea cable insulating inner metal impurities, high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge and the high pressure to hand over
Join the electric discharge of sea cable insulating inner electric branch.
12. the parameter of system according to claim 11, the high-voltage crosslinking sea cable insulating inner bubble-discharge includes putting
Charge value range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster
Number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~
300s。
13. system according to claim 11, the insulative air gap electric discharge of the high-voltage crosslinking sea cable contact high-pressure conductor
Parameter includes electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~
360 °, signal cluster number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching
Duration range: 0~300s.
14. system according to claim 11, the parameter packet of the high-voltage crosslinking sea cable insulating inner metal impurities electric discharge
It includes, magnitude range of discharging: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, letter
Number cluster number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration model
It encloses: 0~300s.
15. system according to claim 11, the parameter of the high-voltage crosslinking sea cable insulation outer semiconducting layer cracking electric discharge
Include: electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °,
Signal cluster number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration model
It encloses: 0~300s.
16. the parameter of system according to claim 11, the high-voltage crosslinking sea cable insulating inner electric branch electric discharge includes,
Electric discharge magnitude range: 1~5000pC, discharge pulse density range: 0~200pps, discharge phase range: 0~360 °, signal cluster
Group's number range: 1-3 group, fixed phase frequency 50Hz, time duration range of discharging: 0~300s, discharge quenching duration range: 0~
300s。
17. system according to claim 10, the shelf depreciation live detection sensor measure loop passes through coaxial cable
Line passes through High Frequency Current Sensor HFCT and forms closed circuit to realize that proximal end interference signal senses partial discharge detection high-frequency current
The simulation of device HFCT is interfered；The wide wrapped capacity coupler of copper strips is remote to realize to the high-voltage crosslinking sea cable ontology or attachment injection
Interference signal is held to interfere the simulation of partial discharge detection High Frequency Current Sensor.
18. system according to claim 10, it is with the typical case that high-voltage crosslinking sea cable scene, which runs electromagnetic environment,
The fitted signal of defect discharge characteristic is independent or the fitted signal mixing output of a variety of typical defect discharge characteristics is realized.
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| CN110749805A (en) * | 2019-09-18 | 2020-02-04 | 浙江大学 | Simulation experiment device, simulation experiment system and simulation experiment method for flashover discharge of submarine cable |
| CN112946444A (en) * | 2021-05-17 | 2021-06-11 | 中国电力科学研究院有限公司 | Method and system for reproducing partial discharge characteristic signals of insulation defects of high-voltage cross-linked cable system |
| CN113238128A (en) * | 2021-05-11 | 2021-08-10 | 广州智丰电气科技有限公司 | Circulating progressive partial discharge discrimination method |
| CN114295942A (en) * | 2021-11-29 | 2022-04-08 | 国网北京市电力公司 | Power cable fault diagnosis system, and method and device for determining fault of power cable |
| CN116631273A (en) * | 2023-07-25 | 2023-08-22 | 国网福建省电力有限公司 | Simulation high altitude electric leakage fault collection system |
| US11796585B2 (en) * | 2020-05-06 | 2023-10-24 | Baker Hughes Holdings Llc | Charge detection and quantization |
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| CN114295942A (en) * | 2021-11-29 | 2022-04-08 | 国网北京市电力公司 | Power cable fault diagnosis system, and method and device for determining fault of power cable |
| CN114295942B (en) * | 2021-11-29 | 2024-03-15 | 国网北京市电力公司 | Power cable fault diagnosis system, power cable fault determination method and device |
| CN116631273A (en) * | 2023-07-25 | 2023-08-22 | 国网福建省电力有限公司 | Simulation high altitude electric leakage fault collection system |
| CN116631273B (en) * | 2023-07-25 | 2023-11-07 | 国网福建省电力有限公司 | Simulation high altitude electric leakage fault collection system |
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