CN110470960A - The analysis method and device of cable local discharge, storage medium and processor - Google Patents
The analysis method and device of cable local discharge, storage medium and processor Download PDFInfo
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- CN110470960A CN110470960A CN201910838410.6A CN201910838410A CN110470960A CN 110470960 A CN110470960 A CN 110470960A CN 201910838410 A CN201910838410 A CN 201910838410A CN 110470960 A CN110470960 A CN 110470960A
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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
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Abstract
This application discloses a kind of analysis method of cable local discharge and devices, storage medium and processor.This method comprises: obtaining multiple target values；According to multiple target values, multiple target proportion values are obtained；Three-dimensional space is constructed according to multiple target proportion values；According to three-dimensional space, the first track and the second track are obtained, wherein, first track is under first state for indicating when cable, the variation track of multiple target proportion values, the second track is for indicating that cable is under the second state, the variation track of multiple target proportion values；According to the first track and the second track, cable analysis report is obtained, wherein analysis report includes at least the fault diagnosis data of cable local discharge and the hazard degree analysis data of cable.It by the application, solves in the related technology when being detected to cable, traditional offline or online diagnostic method fails the problem of in time, comprehensively characterizing the local defect or ageing state of cable.
Description
Technical field
This application involves cable communication fields, analysis method and device in particular to a kind of cable local discharge,
Storage medium and processor.
Background technique
In the related technology, with the continuous improvement of China's industrialization and urbanization level, electricity needs is also increased sharply therewith, right
The security and stability of electric system requires also higher and higher.Power cable is because of its simple installation, electrical strength height and dielectric loss
The features such as small, can effectively solve the problem that city electricity consumption building-up effect and the excessive problem of overhead line land seizure rate, in 6~35kV
It is promoted rapidly in power distribution network and 110kV and area above power transmission electric network, power cable has evolved into each voltage etc.
The important equipment of grade electrical energy transportation, to electric load safety, electric power reliable transmission has indispensable role.
The partial discharge monitoring of power cable is the important technical for guaranteeing cable running safety.For power equipment
Early warning and state aware, sensitive, real-time, the stable on-line monitoring system of use is essential, and such as partial discharge monitoring is let out
Leakage current monitoring, temperature rise monitoring etc., these monitoring technology are on main power grid power transmission and transforming equipment using more mature.
For cable monitoring, cable access amount is larger, monitoring node it is more, to data storage, information matches and
Data application brings huge challenge.Power cable Examination and diagnosis covers power cable fault diagnosis, positioning and electricity
Status monitoring of the power cable in transmission of electricity, however the diversity of the complexity of cable laying environment and material structure give cable event
Barrier diagnosis and Aging Assessment bring difficult and challenge, and traditional offline or online diagnostic method fails in time, comprehensively to characterize
The local defect or ageing state of cable, and physical and chemical or optical analysis means are due to more demanding to test condition, efficiency is lower,
A large amount of cables can not be analyzed and be assessed, and the analysis of test result lacks preferable accuracy and comparability.
For the above problem present in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
The main purpose of the application is to provide the analysis method and device, storage medium and place of a kind of cable local discharge
Device is managed, to solve in the related technology when detecting to cable, traditional offline or online diagnostic method fails timely, complete
The problem of characterizing to face the local defect or ageing state of cable.
To achieve the goals above, according to the one aspect of the application, a kind of analysis side of cable local discharge is provided
Method.This method comprises: obtaining multiple target values, wherein multiple target values are used to characterize the intensity of multiple echo signals, multiple mesh
Marking signal includes ultrahigh-frequency signal, ultrasonic signal and high-frequency signal；According to multiple target values, multiple target proportion values are obtained；According to
Three-dimensional space is constructed according to multiple target proportion values；According to three-dimensional space, the first track and the second track are obtained, wherein the first rail
Mark is under first state for indicating when cable, and the variation track of multiple target proportion values, the second track is for indicating cable
Under the second state, the variation track of multiple target proportion values；According to the first track and the second track, cable analysis report is obtained
It accuses, wherein analysis report includes at least the fault diagnosis data of cable local discharge and the hazard degree analysis data of cable.
Further, before obtaining multiple target values, this method further include: the shelf depreciation of cable is emulated,
Wherein, emulation includes part when the emulation of shelf depreciation state when being in first state to cable and cable are in the second state
The emulation of discharge condition, first state are the state of insulating layer damage, and the second state is voltage suspended state.
Further, obtaining multiple target values includes: to obtain multiple PRPD maps according to emulation；Scheme according to multiple PRPD
Spectrum, obtains multiple target integrated values of multiple echo signals in the first predetermined amount of time；Multiple target integrated values are advised
Reduction handles to obtain multiple target values.
Further, according to multiple target values, obtain multiple target proportion values include: when cable is in first state,
The partial discharge quantity of control cable is in the first preset range；According to variation of multiple target values in the first preset range, obtain
Take multiple target proportion values.
Further, according to multiple target values, multiple target proportion values are obtained further include: when cable is in the second state
When, the partial discharge quantity for controlling cable is in the second preset range；According to variation of the target value in the second preset range, obtain
Multiple target proportion values.
It further, include: that the multiple target proportion values that will acquire turn according to multiple target proportion values building three-dimensional space
It is changed to multiple coordinates of targets values；According to multiple coordinates of targets values, three-dimensional space is constructed.
Further, according to multiple target values, multiple target proportion values are obtained further include: be in first state in cable
When, the shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；Second in corona aging is predetermined
In period, according to multiple target values of specificationization processing, multiple target proportion values are obtained.
Further, according to multiple target values, multiple target proportion values are obtained further include: be in the second state in cable
When, the shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；It is predetermined in the third of corona aging
In period, according to multiple target values of specificationization processing, multiple target proportion values are obtained.
To achieve the goals above, according to the another aspect of the application, a kind of analysis dress of cable local discharge is provided
It sets.The device includes: first acquisition unit, for obtaining multiple target values, wherein multiple target values are for characterizing multiple targets
The intensity of signal, multiple echo signals include ultrahigh-frequency signal, ultrasonic signal and high-frequency signal；Second acquisition unit, for according to
According to multiple target values, multiple target proportion values are obtained；Construction unit, for constructing three-dimensional space according to multiple target proportion values；
Third acquiring unit, for obtaining the first track and the second track according to three-dimensional space, wherein work as indicating the first track
Cable is under first state, the variation track of multiple target proportion values, and the second track is for indicating that cable is in the second state
Under, the variation track of multiple target proportion values；4th acquiring unit, for obtaining cable according to the first track and the second track
Analysis report, wherein analysis report includes at least the fault diagnosis data of cable local discharge and the hazard degree analysis number of cable
According to.
To achieve the goals above, according to the another aspect of the application, a kind of storage medium is provided, storage medium includes
The program of storage, wherein the program executes a kind of analysis method of cable local discharge of above-mentioned any one.
To achieve the goals above, according to the another aspect of the application, a kind of processor is provided, storage medium includes depositing
The program of storage, wherein the program executes a kind of analysis method of cable local discharge of above-mentioned any one.
By the application, using following steps: obtaining multiple target values, wherein multiple target values are for characterizing multiple mesh
The intensity of signal is marked, multiple echo signals include ultrahigh-frequency signal, ultrasonic signal and high-frequency signal；According to multiple target values, obtain
Take multiple target proportion values；Three-dimensional space is constructed according to multiple target proportion values；According to three-dimensional space, the first track and the are obtained
Two tracks, wherein the first track is under first state for indicating when cable, the variation track of multiple target proportion values, the
Two tracks are for indicating that cable is under the second state, the variation track of multiple target proportion values；According to the first track and second
Track obtains cable analysis report, wherein analysis report includes at least the fault diagnosis data and cable of cable local discharge
Hazard degree analysis data, in the related technology when being detected to cable, traditional offline or online diagnostic method fail and
When, comprehensively characterize cable local defect or ageing state the problem of, and then reached in advance prevent cable insulation defect
Or the technical effect of failure.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present application, the schematic reality of the application
Example and its explanation are applied for explaining the application, is not constituted an undue limitation on the present application.In the accompanying drawings:
Fig. 1 is according to a kind of flow chart of the analysis method of cable local discharge provided by the embodiments of the present application；
Fig. 2 is to be in the state that insulating layer damages according to ultrahigh-frequency signal provided by the embodiments of the present application in cable
PRPD map schematic diagram；
Fig. 3 is to be in PRPD in the state that dislocation suspends in cable according to ultrahigh-frequency signal provided by the embodiments of the present application
Map schematic diagram；
Fig. 4 is according to provided by the embodiments of the present application for when cable is in multiple target proportions under the electric field that insulating layer scratches
It is worth the schematic diagram of the variation with discharge capacity (or applying electric field strength)；
Fig. 5 is according to provided by the embodiments of the present application for when multiple target proportion values under the electric field that cable is in floating potential
With the schematic diagram of the variation of discharge capacity (or applying electric field strength)；
Fig. 6 is to be in insulating layer damage according under different application voltages provided by the embodiments of the present application in cable and be in
The spatial distribution schematic diagram of strength of discharge ratio in the case where floating potential；And
Fig. 7 is according to a kind of schematic diagram of the analytical equipment of cable local discharge provided by the embodiments of the present application.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application a part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of the application protection
It encloses.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to embodiments herein described herein.In addition, term " includes " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
According to an embodiment of the present application, a kind of analysis method of cable local discharge is provided.
Fig. 1 is according to a kind of flow chart of the analysis method of cable local discharge provided by the embodiments of the present application.Such as Fig. 1 institute
Show, method includes the following steps:
Step S101 obtains multiple target values, wherein multiple target values are used to characterize the intensity of multiple echo signals, more
A echo signal includes ultrahigh-frequency signal, ultrasonic signal and high-frequency signal.
Above-mentionedly, with the raising that cable running quality requires, cable local discharge measurement is as a kind of effective in real time
Insulation diagnosis technology is gradually applied in the online or live detection of cable.The Partial Discharge Detection of cable helps timely hair
Catastrophic failure or expansionary insulation defect at existing cable body, connector and terminal, prevent cable insulation defect or failure into
The development of one step.
In one embodiment provided by the present application, emulated by partial discharge state of the MATLAB to cable, to cable
Partial discharge when signal be acquired, to get multiple target values, superfrequency that multiple target values are released when being cable partial discharge
The intensity of signal, high-frequency signal and ultrasonic signal.
Step S102 obtains multiple target proportion values according to multiple target values.
Above-mentionedly, after obtaining multiple target values, every group of ultrahigh-frequency signal, ultrasonic signal and the corresponding target of high-frequency signal
Value may be constructed one group of target proportion value.
Step S103 constructs three-dimensional space according to multiple target proportion values.
Specifically, the three-dimensional space that the present embodiment is made up of the mean intensity ratio of each road signal is as a kind of part
Discharge analysis means.
Step S104 obtains the first track and the second track according to three-dimensional space, wherein works as indicating the first track
Cable is under first state, the variation track of multiple target proportion values, and the second track is for indicating that cable is in the second state
Under, the variation track of multiple target proportion values.
Specifically, the present embodiment mainly studies the shape that above-mentioned three kinds of signals are in insulating layer scuffing and floating potential in cable
Variation track under state, therefore, by the three-dimensional space of building to more physical local On-line Discharge monitoring data carry out for a long time with
Track analysis, and construct various types shelf depreciation mode recognizes space and characteristic locus.
Step S105 obtains cable analysis report, wherein analysis report at least wraps according to the first track and the second track
Include the fault diagnosis data of cable local discharge and the hazard degree analysis data of cable.
Above-mentionedly, the ratio Evolution Paths feature obtained under two states is according to cable to develop to analyze discharge fault
Stage and degree of danger.It is monitored and predicts in the subsequent state to cable, analysis is made to the degree of danger of cable.
Optionally, before obtaining multiple target values, this method further include: the shelf depreciation of cable is emulated,
In, emulation includes that the emulation of shelf depreciation state when being in first state to cable and cable are locally put when being in the second state
The emulation of electricity condition, first state are the state of insulating layer damage, and the second state is voltage suspended state.
Specifically, it in the embodiment of the present application, is mainly emulated by two states to cable to determine two states
Under target value.
Optionally, obtaining multiple target values includes: to obtain multiple PRPD maps according to emulation；According to multiple PRPD maps,
Obtain multiple target integrated values of multiple echo signals in the first predetermined amount of time；Specification is carried out to multiple target integrated values
Processing obtains multiple target values.
Specifically, since electric discharge activity not only shows as signal strength, the electric discharge frequency, therefore the present embodiment are also embodied in
When the road Zhong Duige signal strength is compared, with the amplitude in same time period in (or equivalent amount power frequency period) with phase
Integrated value analyzed as object.
Fig. 2 is to be in the state that insulating layer damages according to ultrahigh-frequency signal provided by the embodiments of the present application in cable
PRPD map schematic diagram.Fig. 3 is to be in the state that dislocation suspends in cable according to ultrahigh-frequency signal provided by the embodiments of the present application
Under PRPD map schematic diagram.
By above-mentioned Fig. 2 and Fig. 3 it is found that also having reflected ultrahigh-frequency signal average width in each map in Fig. 2 and Fig. 3
Value.
The PRPD of ultrasonic signal and high-frequency signal respectively in the case where cable is in insulating layer damage and floating potential schemes
Spectrum is a form of map with above-mentioned Fig. 2 and Fig. 3, and details are not described herein for the present embodiment, is schemed with the PRPD of ultrahigh-frequency signal
Illustrate for spectrum.
Above-mentionedly, all kinds of absolute magnitudes that shelf depreciation generates are difficult to limited by bandwidth, sensitivity and detection scale
Measured by sensor, therefore the obtained signal of definite measured system is the apparent value of signal amplitude (or energy).If ignoring
The nonlinear attenuation process in the transmission process of physical signal is stated, then it is assumed that there are relatively stable between measurement apparent value
Proportionate relationship can react the exergonic evolutionary process of shelf depreciation to a certain extent.It is being put to analyze each road signal
The proportionate relationship of electric different phase, this patent carry out specification processing to signal strength, and specification value R ' is calculated by following formula:
Wherein, DNR is the maximum dynamic range (unit: dB) of signal strength in test；S is signal strength in measurement period
The average value (unit: dB) of interior integrated value, i.e.,
Wherein, the average value in fixed windowing length that S φ is superimposed by n ac cycle (being determined by measurement duration)
(unit: dB)；N is the ac cycle stacking fold measured in duration；T is an ac cycle duration, and industrial frequency AC takes T=
0.02s。
Optionally, according to multiple target values, obtaining multiple target proportion values includes: the control when cable is in first state
The partial discharge quantity of cable processed is in the first preset range；According to variation of multiple target values in the first preset range, obtain
Multiple target proportion values.
Above-mentionedly, after obtaining multiple target values after handling multiple target integrated values, ultrahigh-frequency signal, ultrasound are obtained
The specification signal strength of signal and high-frequency signal, is denoted as R 'UHF、R′AEWith R 'HFCT.Fig. 4 is provided according to the embodiment of the present application
Be when under the electric field that cable is in insulating layer scuffing multiple target proportion values with the variation of discharge capacity (or apply electric field strength)
Schematic diagram, as shown in Figure 4, when cable be in insulating layer scuffing electric field under brief strength proportionate relationship (R 'UHF、R′AEWith
R′HFCT) with discharge capacity (or apply electric field strength) variation schematic diagram.Fig. 5 is according to provided by the embodiments of the present application to work as
Cable is in the schematic diagram of the variation of multiple target proportion values under the electric field of floating potential with discharge capacity (or applying electric field strength),
As shown in Figure 5, as brief strength proportionate relationship (R ' under the electric field that cable is in floating potentialUHF、R′AEWith R 'HFCT) with discharge capacity
The schematic diagram of the variation of (or applying electric field strength).
Above-mentionedly, by Fig. 4 and Fig. 5 it is found that the process that the proportionate relationship of three tunnel signal strengths changes from weak to strong with electric field is applied
In not remain unchanged, but developed with certain rule.
Optionally, it is found after further influence of the removal discharge capacity variation to each signal strength ratio, as corona is old
The passage for changing the time, after insulator dielectric performance is decreased obviously (i.e. mass loss stage), the performance of ultrasonic signal intensity ratio
Apparent ascendant trend out, and ultrahigh-frequency signal and high-frequency signal strength ratio are gradually reduced.
Specifically, in the state that cable is in insulating layer scuffing, the partial discharge electricity by controlling cable is in a model
When enclosing interior, the partial discharge voltage that cable applies is different, by the difference of partial discharge voltage, can obtain multiple and different in each stage
Target value, and different target proportion values is obtained according to variation.
Such as: ultrasonic measurement (< 1.9kV, discharge capacity < 64pC) when voltage is lower does not have visual pulse to occur, and is applying
During making alive rises to 12.1kV (or discharge capacity rises to 2.41nC by 20pC) by 2.5kV, R 'UHFComponent is gradually reduced,
R′AEComponent is gradually increasing, and when closing on breakdown, the two is closer to, and R ' in the processHFCTIt is kept approximately constant, and accounts for
There is maximum ratio (> 0.4).
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in the second state,
The partial discharge quantity of control cable is in the second preset range；According to variation of the target value in the second preset range, obtain more
A target proportion value.
When specifically, under the discharge scenario that cable is in dislocation floating potential, control discharge capacity is in the second default model
When enclosing interior, discharge voltage changes within the scope of one, and above three echo signal is presented different due to the variation of discharge voltage
Ratio.
For example, ultrasound detection (discharge capacity < 68pC) when applying voltage and being less than 4.5kV does not find visual pulse, applying
During voltage rises to 12.8kV (closing on breakdown) by 5.9kV, R 'UHFComponent gradually decreases, R 'AEComponent first rises to be reduced again,
When closing on breakdown, the two is closer to, in the process, R 'HFCTComponent persistently rises and gradually occupies most ratios
(>0.6)。
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in first state,
The shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；In the second pre- timing of corona aging
Between in section, according to multiple target values of specificationization processing, obtain multiple target proportion values.
Above-mentionedly, insulating layer is scratched, ultrasonic measurement (< 1.9kV, discharge capacity < 64pC) when voltage is lower does not have
Visual pulse occurs, during application voltage rises to 12.1kV (or discharge capacity rises to 2.41nC by 20pC) by 2.5kV,
R′UHFComponent is gradually reduced, R 'AEComponent is gradually increasing, and when closing on breakdown, the two is closer to, and R ' in the processHFCT
It is kept approximately constant, and occupies maximum ratio (> 0.4)；And for the floating potential situation that misplacesUltrasound detection
When applying voltage and being less than 4.5kV, (discharge capacity < 68pC) does not find visual pulse, is risen to applying voltage by 5.9kV
During 12.8kV (closing on breakdown), R 'UHFComponent gradually decreases, R 'AEComponent first rises to be reduced again, when closing on breakdown, the two
It is closer to, in the process, R 'HFCTComponent persistently rises and gradually occupies most ratios (> 0.6).
Specifically, more physical signal evolution Features under defect are scratched in order to obtain insulating layer, keeps application voltage constant, In
Each physical signal intensity relationship is recorded under medium corona degree with the relationship of corona aging time, is continuing 200 hours
In course of exerting pressure, corona discharge can undergo substantially three phases, i.e. charge accumulation stage, stable discharge stage and mass loss rank
Section.(0h → 50h) in the first stage, with the generation of electric discharge, charge continues to accumulate in insulator surface, and is radially formed electricity
Dizzy stabilized zone so that electric discharge activity is weakened, therefore discharge capacity present at any time certain downward trend (1.276nC →
1.235nC)；At second stage (50h → 170h), shelf depreciation active degree is wavy in a certain range, generally not shown
Trend significantly is risen or fallen, is at this time the stabilization sub stage of corona aging；At phase III (170h → close on breakdown), for a long time
The corona aging of duration makes insulator surface by galvano-cautery or ablation, and part serious mass loss occurs and makes partial zones
Domain electric field increases, therefore the lasting raising (1.245nC → 1.334nC) of guiding discharge activity, and what is be accompanied by this is superfrequency
The decline of the rising of signal strength ratio and ultrasonic signal and high-frequency signal strength ratio.
Since the size of discharge capacity can make each physical signal intensity relationship change, even if being kept in voltage
During constant but corona continues aging, when it is high when low electric discharge active degree also will affect each physical signal intensity and close
System.In order to further disclose the influence by the corona duration to each signal strength ratio relationship merely, this patent is using multiple
R ' of the formula to each timeUHF、R′AEWith R 'HFCTReduction processing is carried out, R ' is obtainednor, to reduce electric discharge active degree variation as far as possible
Bring influences.
Further, it is found after influence of the removal discharge capacity variation to each signal strength ratio, with the corona aging time
Passage, after insulator dielectric performance is decreased obviously (i.e. mass loss stage), ultrasonic signal intensity ratio is shown obviously
Ascendant trend, and ultrahigh-frequency signal and high-frequency signal strength ratio are gradually reduced.According to ultrasonic signal, ultrahigh-frequency signal and height
The Strength Changes of frequency signal obtain multiple target proportion values.
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in the second state,
The shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；In the pre- timing of the third of corona aging
Between in section, according to multiple target values of specificationization processing, obtain multiple target proportion values.
Specifically, it discharges due to being scratched among the above for insulating layer, electric discharge early period (0h → 70h) mean discharge magnitude has gradually
Downward trend, but the intermediary and later stages discharged, do not show tendency feature.Identical processing side is scratched using with insulating layer
Method, each signal proportion after can obtaining removal discharge capacity variation and influencing change with time process.Floating potential is in cable
When, when remove discharge capacity variation influence after, each signal strength ratio change with time presentation and insulating layer scuffing situation phase
Similar trend, with the passage (especially after 110h) of discharge time, ultrahigh-frequency signal ratio is gradually increasing, and ultrasound letter
Number and the ratio of high-frequency signal be gradually reduced.Therefore, it in the predetermined amount of time of corona aging, can obtain multiple in the electricity that suspends
Target proportion value under the state of position.
It optionally, include: the multiple target proportion values conversion that will acquire according to multiple target proportion values building three-dimensional space
For multiple coordinates of targets values；According to multiple coordinates of targets values, three-dimensional space is constructed.
Specifically, the Simultaneous Monitoring of ultrahigh-frequency signal, ultrasonic signal and high-frequency signal provides for the diagnosis of shelf depreciation
A kind of analysis method of more physics.Three-dimensional space [the R ' that this patent is constituted with the mean intensity ratio of each road signalUHF、R′AE
With R 'HFCT] as a kind of Analysis of Partial Discharge means.
Fig. 6 is to be in insulating layer damage according under different application voltages provided by the embodiments of the present application in cable and be in
The spatial distribution schematic diagram of strength of discharge ratio in the case where floating potential, as shown in fig. 6, the electric discharge of both of which has respectively
Different recognizes space, and with the raising for applying voltage (mean discharge magnitude), mean intensity scale space position tool
There is respective spatial evolution track.By the three ratio Analysis method, more physical local On-line Discharge monitoring data can be carried out
Long-term follow analysis, and construct various types shelf depreciation mode recognizes space and characteristic locus, for shelf depreciation therefore
Hinder modality diagnostic and risk assessment.
Above-mentionedly, for specific switchgear, the propagation Lu Jinghui comparative example evolution properties of each signal are had an impact.
Therefore in following research, needle can be carried out to the more physical signal ratio relations of shelf depreciation under the exemplary apparatus structures such as switch
To the practical research of property, the evolution Feature database of exemplary apparatus is constructed.
Originally be embodiment using three ratio Analysis methods, more physical local On-line Discharge monitoring data can be carried out for a long time with
Track analysis.Establish building various types shelf depreciation mode simultaneously recognizes space and characteristic locus, for cable part
Discharge fault modality diagnostic and risk assessment.
The analysis method of a kind of cable local discharge provided by the embodiments of the present application, by obtaining multiple target values, wherein
The multiple target value is used to characterize the intensity of multiple echo signals, and the multiple echo signal includes ultrahigh-frequency signal, ultrasound
Signal and high-frequency signal；According to the multiple target value, multiple target proportion values are obtained；According to the multiple target proportion value structure
Build three-dimensional space；According to the three-dimensional space, the first track and the second track are obtained, wherein first track is for indicating
When cable is under first state, the variation track of the multiple target proportion value, second track is for indicating the electricity
Cable is under the second state, the variation track of the multiple target proportion value；According to first track and second track,
Obtain cable analysis report, wherein the analysis report includes at least fault diagnosis data and the institute of the cable local discharge
The hazard degree analysis data for stating cable, solve in the related technology when detecting to cable, traditional offline or online
Diagnostic method fails the problem of in time, comprehensively characterizing the local defect or ageing state of cable, and then has reached pre- in advance
The technical effect of anti-cable insulation defect or failure.
It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
It is executed in computer system, although also, logical order is shown in flow charts, and it in some cases, can be with not
The sequence being same as herein executes shown or described step.
The embodiment of the present application also provides a kind of analytical equipments of cable local discharge, it should be noted that the application is real
The analytical equipment for applying a kind of cable local discharge of example can be used for executing provided by the embodiment of the present application for a kind of cable
The analysis method of shelf depreciation.It is situated between below to a kind of analytical equipment of cable local discharge provided by the embodiments of the present application
It continues.
Fig. 7 is according to a kind of schematic diagram of the analytical equipment of cable local discharge provided by the embodiments of the present application.Such as Fig. 7 institute
Show, which includes: first acquisition unit 701, for obtaining multiple target values, wherein multiple target values are multiple for characterizing
The intensity of echo signal, multiple echo signals include ultrahigh-frequency signal, ultrasonic signal and high-frequency signal；Second acquisition unit 702,
For obtaining multiple target proportion values according to multiple target values；Construction unit 703, for being constructed according to multiple target proportion values
Three-dimensional space；Third acquiring unit 704, for obtaining the first track and the second track, wherein the first rail according to three-dimensional space
Mark is under first state for indicating when cable, and the variation track of multiple target proportion values, the second track is for indicating cable
Under the second state, the variation track of multiple target proportion values；4th acquiring unit 705, for according to the first track and the
Two tracks obtain cable analysis report, wherein analysis report includes at least the fault diagnosis data and cable of cable local discharge
Hazard degree analysis data.
A kind of analytical equipment of cable local discharge provided by the embodiments of the present application is used for by first acquisition unit 701
Obtain multiple target values, wherein multiple target values are used to characterize the intensity of multiple echo signals, and multiple echo signals include extra-high
Frequency signal, ultrasonic signal and high-frequency signal；Second acquisition unit 702, for obtaining multiple target proportions according to multiple target values
Value；Construction unit 703, for constructing three-dimensional space according to multiple target proportion values；Third acquiring unit 704, for according to three
Dimension space obtains the first track and the second track, wherein the first track is under first state for indicating when cable, multiple
The variation track of target proportion value, the second track is for indicating that cable is under the second state, the variation of multiple target proportion values
Track；4th acquiring unit 705, for obtaining cable analysis report according to the first track and the second track, wherein analysis report
The hazard degree analysis data for accusing the fault diagnosis data and cable that include at least cable local discharge, solve and exist in the related technology
When detecting to cable, traditional offline or online diagnostic method fails the local defect in time, comprehensively characterizing cable
Or the problem of ageing state, and then reached in the technical effect for preventing cable insulation defect or failure in advance.
Optionally, the device further include: simulation unit, for being put to the part of cable before obtaining multiple target values
Electricity is emulated, wherein emulation includes that the emulation of shelf depreciation state when being in first state to cable and cable are in the
The emulation of part discharge condition when two-state, first state are the state of insulating layer damage, and the second state is voltage suspended state.
Optionally, first acquisition unit 701 includes: the first acquisition subelement, for obtaining multiple PRPD figures according to emulation
Spectrum；Second obtains subelement, for it is more in the first predetermined amount of time to obtain multiple echo signals according to multiple PRPD maps
A target integrated value；First processing subelement, handles to obtain multiple target values for carrying out specification to multiple target integrated values.
Optionally, second acquisition unit 702 includes: the first control subelement, for being in the feelings of first state in cable
Under condition, the partial discharge quantity for controlling cable is in the first preset range；Third obtains subelement, for existing according to multiple target values
Variation in first preset range obtains multiple target proportion values.
Optionally, second acquisition unit 702 further include: the second control subelement, for being in the second state in cable
In the case of, the partial discharge quantity for controlling cable is in the second preset range；4th obtains subelement, for according to target value the
Variation in two preset ranges obtains multiple target proportion values.
Optionally, construction unit 703 includes: conversion subunit, and multiple target proportion values for will acquire are converted to more
A coordinates of targets value；Subelement is constructed, for constructing three-dimensional space according to multiple coordinates of targets values.
Optionally, second acquisition unit 702 further include: second processing subelement is used for when cable is in first state,
The shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；5th obtains subelement, in electricity
In second predetermined amount of time of dizzy aging, according to multiple target values of specificationization processing, multiple target proportion values are obtained.
Optionally, second acquisition unit 702 further include: third handles subelement, is used for when cable is in the second state,
The shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；6th obtains subelement, in electricity
In the third predetermined amount of time of dizzy aging, according to multiple target values of specificationization processing, multiple target proportion values are obtained.
A kind of analytical equipment of cable local discharge includes processor and memory, and above-mentioned first acquisition unit, second are obtained
Unit 702, construction unit 703, third acquiring unit 704 and the 4th acquiring unit 705 etc. is taken to be stored in as program unit
In memory, above procedure unit stored in memory is executed by processor to realize corresponding function.
Include kernel in processor, is gone in memory to transfer corresponding program unit by kernel.Kernel can be set one
Or more, it is solved in the related technology when being detected to cable by adjusting kernel parameter, traditional is offline or online
Diagnostic method fail in time, comprehensively characterize cable local defect or ageing state the problem of.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, if read-only memory (ROM) or flash memory (flash RAM), memory include that at least one is deposited
Store up chip.
The embodiment of the invention provides a kind of storage mediums, are stored thereon with program, real when which is executed by processor
A kind of existing analysis method of cable local discharge.
The embodiment of the invention provides a kind of processor, the processor is for running program, wherein described program operation
A kind of analysis method of cable local discharge described in Shi Zhihang.
The embodiment of the invention provides a kind of equipment, equipment include processor, memory and storage on a memory and can
The program run on a processor, processor performs the steps of when executing program obtains multiple target values, wherein multiple mesh
Scale value is used to characterize the intensity of multiple echo signals, and multiple echo signals include ultrahigh-frequency signal, ultrasonic signal and high-frequency signal；
According to multiple target values, multiple target proportion values are obtained；Three-dimensional space is constructed according to multiple target proportion values；According to three-dimensional space
Between, obtain the first track and the second track, wherein the first track is under first state for indicating when cable, multiple targets
The variation track of ratio value, the second track is for indicating that cable is under the second state, the variation track of multiple target proportion values；
According to the first track and the second track, cable analysis report is obtained, wherein analysis report includes at least the event of cable local discharge
Hinder the hazard degree analysis data of diagnostic data and cable.
Optionally, before obtaining multiple target values, this method further include: the shelf depreciation of cable is emulated,
In, emulation includes that the emulation of shelf depreciation state when being in first state to cable and cable are locally put when being in the second state
The emulation of electricity condition, first state are the state of insulating layer damage, and the second state is voltage suspended state.
Optionally, obtaining multiple target values includes: to obtain multiple PRPD maps according to emulation；According to multiple PRPD maps,
Obtain multiple target integrated values of multiple echo signals in the first predetermined amount of time；Specification is carried out to multiple target integrated values
Processing obtains multiple target values.
Optionally, according to multiple target values, obtaining multiple target proportion values includes: the control when cable is in first state
The partial discharge quantity of cable processed is in the first preset range；According to variation of multiple target values in the first preset range, obtain
Multiple target proportion values.
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in the second state,
The partial discharge quantity of control cable is in the second preset range；According to variation of the target value in the second preset range, obtain more
A target proportion value.
It optionally, include: the multiple target proportion values conversion that will acquire according to multiple target proportion values building three-dimensional space
For multiple coordinates of targets values；According to multiple coordinates of targets values, three-dimensional space is constructed.
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in first state,
The shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；In the second pre- timing of corona aging
Between in section, according to multiple target values of specificationization processing, obtain multiple target proportion values.
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in the second state,
The shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；In the pre- timing of the third of corona aging
Between in section, according to multiple target values of specificationization processing, obtain multiple target proportion values.Equipment herein can be service
Device, PC, PAD, mobile phone etc..
Present invention also provides a kind of computer program products, when executing on data processing equipment, are adapted for carrying out just
The program of beginningization there are as below methods step: multiple target values are obtained, wherein multiple target values are for characterizing multiple echo signals
Intensity, multiple echo signals include ultrahigh-frequency signal, ultrasonic signal and high-frequency signal；According to multiple target values, multiple mesh are obtained
Mark ratio value；Three-dimensional space is constructed according to multiple target proportion values；According to three-dimensional space, the first track and the second track are obtained,
Wherein, the first track is under first state for indicating when cable, and the variation track of multiple target proportion values, the second track is used
It is under the second state in expression cable, the variation track of multiple target proportion values；According to the first track and the second track, obtain
Cable analysis report, wherein analysis report includes at least the fault diagnosis data of cable local discharge and the danger level point of cable
Analyse data.
Optionally, before obtaining multiple target values, this method further include: the shelf depreciation of cable is emulated,
In, emulation includes that the emulation of shelf depreciation state when being in first state to cable and cable are locally put when being in the second state
The emulation of electricity condition, first state are the state of insulating layer damage, and the second state is voltage suspended state.
Optionally, obtaining multiple target values includes: to obtain multiple PRPD maps according to emulation；According to multiple PRPD maps,
Obtain multiple target integrated values of multiple echo signals in the first predetermined amount of time；Specification is carried out to multiple target integrated values
Processing obtains multiple target values.
Optionally, according to multiple target values, obtaining multiple target proportion values includes: the control when cable is in first state
The partial discharge quantity of cable processed is in the first preset range；According to variation of multiple target values in the first preset range, obtain
Multiple target proportion values.
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in the second state,
The partial discharge quantity of control cable is in the second preset range；According to variation of the target value in the second preset range, obtain more
A target proportion value.
It optionally, include: the multiple target proportion values conversion that will acquire according to multiple target proportion values building three-dimensional space
For multiple coordinates of targets values；According to multiple coordinates of targets values, three-dimensional space is constructed.
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in first state,
The shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；In the second pre- timing of corona aging
Between in section, according to multiple target values of specificationization processing, obtain multiple target proportion values.
Optionally, according to multiple target values, multiple target proportion values are obtained further include: when cable is in the second state,
The shelf depreciation voltage for controlling cable is constant, carries out specification processing to multiple target values；In the pre- timing of the third of corona aging
Between in section, according to multiple target values of specificationization processing, obtain multiple target proportion values.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including element
There is also other identical elements in process, method, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can provide as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The above is only embodiments herein, are not intended to limit this application.To those skilled in the art,
Various changes and changes are possible in this application.It is all within the spirit and principles of the present application made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of the claims of this application.
Claims (10)
1. a kind of analysis method of cable local discharge characterized by comprising
Obtain multiple target values, wherein the multiple target value is used to characterize the intensity of multiple echo signals, the multiple target
Signal includes ultrahigh-frequency signal, ultrasonic signal and high-frequency signal；
According to the multiple target value, multiple target proportion values are obtained；
Three-dimensional space is constructed according to the multiple target proportion value；
According to the three-dimensional space, the first track and the second track are obtained, wherein first track is for indicating at cable
Under first state, the variation track of the multiple target proportion value, second track is for indicating that the cable is in the
Under two-state, the variation track of the multiple target proportion value；
According to first track and second track, cable analysis report is obtained, wherein the analysis report includes at least
The hazard degree analysis data of the fault diagnosis data of the cable local discharge and the cable.
2. the method according to claim 1, wherein before obtaining multiple target values, the method also includes:
The shelf depreciation of cable is emulated, wherein the emulation includes part when being in the first state to the cable
The emulation of part discharge condition when the emulation of discharge condition and the cable are in second state, the first state is exhausted
The state of edge layer damage, second state are voltage suspended state.
3. according to the method described in claim 2, it is characterized in that, obtaining multiple target values and including:
According to the emulation, multiple PRPD maps are obtained；
According to the multiple PRPD map, multiple targets integral of the multiple echo signal in the first predetermined amount of time is obtained
Value；
Specification is carried out to the multiple target integrated value to handle to obtain the multiple target value.
4. according to the method described in claim 3, it is characterized in that, obtaining multiple target proportions according to the multiple target value
Value includes:
When the cable is in the first state, the partial discharge quantity for controlling the cable is in the first preset range；
According to variation of the multiple target value in first preset range, multiple target proportion values are obtained.
5. according to the method described in claim 3, it is characterized in that, obtaining multiple target proportions according to the multiple target value
Value further include:
When the cable is in second state, the partial discharge quantity for controlling the cable is in the second preset range；
According to variation of the target value in second preset range, multiple target proportion values are obtained.
6. the method according to claim 1, wherein constructing three-dimensional space packet according to the multiple target proportion value
It includes:
The multiple target proportion value that will acquire is converted to multiple coordinates of targets values；
According to the multiple coordinates of targets value, the three-dimensional space is constructed.
7. according to the method described in claim 3, it is characterized in that, obtaining multiple target proportions according to the multiple target value
Value further include:
When the cable is in the first state, the shelf depreciation voltage for controlling the cable is constant, to the multiple mesh
Scale value carries out specification processing；
In the second predetermined amount of time of corona aging, according to the multiple target value of specificationization processing, obtain the multiple
Target proportion value.
8. according to the method described in claim 3, it is characterized in that, obtaining multiple target proportions according to the multiple target value
Value further include:
When the cable is in second state, the shelf depreciation voltage for controlling the cable is constant, to the multiple mesh
Scale value carries out specification processing；
In the third predetermined amount of time of corona aging, according to the multiple target value of specificationization processing, obtain the multiple
Target proportion value.
9. a kind of analytical equipment of cable local discharge characterized by comprising
First acquisition unit, for obtaining multiple target values, wherein the multiple target value is for characterizing multiple echo signals
Intensity, the multiple echo signal include ultrahigh-frequency signal, ultrasonic signal and high-frequency signal；
Second acquisition unit, for obtaining multiple target proportion values according to the multiple target value；
Construction unit, for constructing three-dimensional space according to the multiple target proportion value；
Third acquiring unit, for obtaining the first track and the second track, wherein first rail according to the three-dimensional space
Mark is under first state for indicating when cable, and the variation track of the multiple target proportion value, second track is used for
Indicate that the cable is under the second state, the variation track of the multiple target proportion value；
4th acquiring unit, for obtaining cable analysis report, wherein institute according to first track and second track
Analysis report is stated including at least the fault diagnosis data of the cable local discharge and the hazard degree analysis data of the cable.
10. a kind of storage medium and processor, which is characterized in that the storage medium includes the program of storage, the processor
For running described program, wherein a kind of cable described in any one of described program perform claim requirement 1 to 8 is locally put
The analysis method of electricity.
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Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002090412A (en) * | 2000-09-12 | 2002-03-27 | Sumitomo Electric Ind Ltd | Partial-discharge measuring apparatus |
| CN101702001A (en) * | 2009-12-07 | 2010-05-05 | 华北电力大学 | Method and device for evaluating discharge severity of gas insulating combined electric equipment |
| KR20110114951A (en) * | 2010-04-14 | 2011-10-20 | (주)엠파워 | System for presumption which is occured partial discharge in power cable |
| CN102735999A (en) * | 2012-07-02 | 2012-10-17 | 山东电力集团公司电力科学研究院 | Gas insulated substation (GIS) partial discharge online monitoring system and fault mode identifying method thereof |
| CN103115926A (en) * | 2013-01-22 | 2013-05-22 | 清华大学 | Detection method for tree-like aging defect of cable insulation material |
| KR101317476B1 (en) * | 2012-05-17 | 2013-10-10 | 한국전기안전공사 | Online system and method for diagnosis of partial discharge on cable |
| CN103558458A (en) * | 2013-11-19 | 2014-02-05 | 国家电网公司 | Cable insulation characteristic judging method |
| CN103576059A (en) * | 2013-10-10 | 2014-02-12 | 国家电网公司 | Integrated fault diagnosis method and system for turn-to-turn discharging of transformer |
| CN203502550U (en) * | 2013-10-24 | 2014-03-26 | 国家电网公司 | Partial discharge live detection device |
| CN103698674A (en) * | 2014-01-02 | 2014-04-02 | 国家电网公司 | Flow cable partial discharge online monitoring system |
| CN103713245A (en) * | 2014-01-02 | 2014-04-09 | 国家电网公司 | XLPE cable partial discharge on-line monitoring system |
| CN103969556A (en) * | 2014-03-14 | 2014-08-06 | 上海交通大学 | Insulation electrified detection device for cable accessories |
| CN104008256A (en) * | 2014-06-13 | 2014-08-27 | 北京航空航天大学 | DELMIA-based emulational engineering practice method of cable maintenance |
| CN104375067A (en) * | 2014-11-18 | 2015-02-25 | 深圳供电局有限公司 | Local discharge detection device and method for looped network switch cabinet |
| WO2015078716A1 (en) * | 2013-11-29 | 2015-06-04 | Hagenuk Kmt Kabelmesstechnik Gmbh | Method and device for locating partial discharges in electric cables |
| CN204405785U (en) * | 2014-10-31 | 2015-06-17 | 广西电网公司电力科学研究院 | Partial discharge monitoring overall treatment unit in transformer oil |
| CN105319487A (en) * | 2015-10-30 | 2016-02-10 | 国家电网公司 | Transformer station partial discharge signal detection and positioning system and method |
| CN105629136A (en) * | 2015-12-28 | 2016-06-01 | 国网甘肃省电力公司金昌供电公司 | Cable insulation state online automatic monitoring and diagnosis system |
| CN107167716A (en) * | 2017-07-11 | 2017-09-15 | 国网福建省电力有限公司泉州供电公司 | A kind of shelf depreciation default kind identification method and device |
| KR20180105954A (en) * | 2017-03-16 | 2018-10-01 | 한국전력공사 | Wavelength division multiplexing system for detecting partial discharge |
| CN108957251A (en) * | 2018-05-18 | 2018-12-07 | 深圳供电局有限公司 | Cable joint partial discharge mode identification method |
| KR20190055639A (en) * | 2017-11-15 | 2019-05-23 | 주식회사 다스코포레이션 | Sensing apparatus for monitoring real-time fault diagnosis of self-generating high pressure transmission dc cable, monitoring system and method for the same |
-
2019
- 2019-09-05 CN CN201910838410.6A patent/CN110470960B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002090412A (en) * | 2000-09-12 | 2002-03-27 | Sumitomo Electric Ind Ltd | Partial-discharge measuring apparatus |
| CN101702001A (en) * | 2009-12-07 | 2010-05-05 | 华北电力大学 | Method and device for evaluating discharge severity of gas insulating combined electric equipment |
| KR20110114951A (en) * | 2010-04-14 | 2011-10-20 | (주)엠파워 | System for presumption which is occured partial discharge in power cable |
| KR101317476B1 (en) * | 2012-05-17 | 2013-10-10 | 한국전기안전공사 | Online system and method for diagnosis of partial discharge on cable |
| CN102735999A (en) * | 2012-07-02 | 2012-10-17 | 山东电力集团公司电力科学研究院 | Gas insulated substation (GIS) partial discharge online monitoring system and fault mode identifying method thereof |
| CN103115926A (en) * | 2013-01-22 | 2013-05-22 | 清华大学 | Detection method for tree-like aging defect of cable insulation material |
| CN103576059A (en) * | 2013-10-10 | 2014-02-12 | 国家电网公司 | Integrated fault diagnosis method and system for turn-to-turn discharging of transformer |
| CN203502550U (en) * | 2013-10-24 | 2014-03-26 | 国家电网公司 | Partial discharge live detection device |
| CN103558458A (en) * | 2013-11-19 | 2014-02-05 | 国家电网公司 | Cable insulation characteristic judging method |
| WO2015078716A1 (en) * | 2013-11-29 | 2015-06-04 | Hagenuk Kmt Kabelmesstechnik Gmbh | Method and device for locating partial discharges in electric cables |
| CN103713245A (en) * | 2014-01-02 | 2014-04-09 | 国家电网公司 | XLPE cable partial discharge on-line monitoring system |
| CN103698674A (en) * | 2014-01-02 | 2014-04-02 | 国家电网公司 | Flow cable partial discharge online monitoring system |
| CN103969556A (en) * | 2014-03-14 | 2014-08-06 | 上海交通大学 | Insulation electrified detection device for cable accessories |
| CN104008256A (en) * | 2014-06-13 | 2014-08-27 | 北京航空航天大学 | DELMIA-based emulational engineering practice method of cable maintenance |
| CN204405785U (en) * | 2014-10-31 | 2015-06-17 | 广西电网公司电力科学研究院 | Partial discharge monitoring overall treatment unit in transformer oil |
| CN104375067A (en) * | 2014-11-18 | 2015-02-25 | 深圳供电局有限公司 | Local discharge detection device and method for looped network switch cabinet |
| CN105319487A (en) * | 2015-10-30 | 2016-02-10 | 国家电网公司 | Transformer station partial discharge signal detection and positioning system and method |
| CN105629136A (en) * | 2015-12-28 | 2016-06-01 | 国网甘肃省电力公司金昌供电公司 | Cable insulation state online automatic monitoring and diagnosis system |
| KR20180105954A (en) * | 2017-03-16 | 2018-10-01 | 한국전력공사 | Wavelength division multiplexing system for detecting partial discharge |
| CN107167716A (en) * | 2017-07-11 | 2017-09-15 | 国网福建省电力有限公司泉州供电公司 | A kind of shelf depreciation default kind identification method and device |
| KR20190055639A (en) * | 2017-11-15 | 2019-05-23 | 주식회사 다스코포레이션 | Sensing apparatus for monitoring real-time fault diagnosis of self-generating high pressure transmission dc cable, monitoring system and method for the same |
| CN108957251A (en) * | 2018-05-18 | 2018-12-07 | 深圳供电局有限公司 | Cable joint partial discharge mode identification method |
Non-Patent Citations (8)
Also Published As
| Publication number | Publication date |
|---|---|
| CN110470960B (en) | 2021-03-09 |
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