CN104777386A - Failure analyzing and detecting system for cable accessories - Google Patents
Failure analyzing and detecting system for cable accessories Download PDFInfo
- Publication number
- CN104777386A CN104777386A CN201510191827.XA CN201510191827A CN104777386A CN 104777386 A CN104777386 A CN 104777386A CN 201510191827 A CN201510191827 A CN 201510191827A CN 104777386 A CN104777386 A CN 104777386A
- Authority
- CN
- China
- Prior art keywords
- fault
- cable accessory
- signal
- detection system
- analysis detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a failure analyzing and detecting system for cable accessories. The failure analyzing and detecting system comprises a signal acquisition module and a signal processing module, wherein the signal acquisition module is used for acquiring a local discharge signal of a failure point of the cable accessories and converting the local discharge signal into a digital signal for output; the signal processing module is used for receiving the digital signal output by the signal acquisition module, analyzing and processing the digital signal and judging the failure information of the cable accessories according to a processing result, and the failure information comprises at least one of the type, size and location of the failure. The failure analyzing and detecting system not only can detect whether the cable accessories have defects or not but also can judge the type and size of the failure, the analysis result of the cable accessories is perfected, and the using safety of the cable accessories is improved.
Description
Technical field
The present invention relates to electric cable fitting detection field, particularly a kind of cable accessory fault analysis detection system.
Technical background
Along with the widespread use in electric system of crosslinked polyethylene (XLPE) power cable, XLPE cable operational system fault is also day by day remarkable.According to statistics, in the middle of XLPE power cable interruption of service, the accident caused because of cable accessory fault is up to 75%, and cable accessory has become the weak link in Operation of Electric Systems, therefore analyzes particularly important to the detection of cable accessory fault.The domestic and international method detected for cable accessory fault analysis has a lot at present, but although current fault detection method can detect abort situation, but the judgement of accident defect type, fault size cannot be realized, can not assess cable accessory ageing state and residual life, provide reparation suggestion, more can not process repair data, thus simulate fault restoration model.
Summary of the invention
In order to address these problems, the object of the invention is to overcome above-mentioned deficiency existing in prior art, a kind of cable accessory fault analysis detection system improving cable accessory safety in utilization is provided.
The problem that the present invention solves further is, to the assessment of cable accessory ageing state and estimating of cable accessory residual life, and provides reparation suggestion further.
The problem that the present invention further solves is, carries out simulation repair process to repair data, obtains simulating repairing model.
In order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of cable accessory fault analysis detection system, comprising:
Signal acquisition module, for gathering cable accessory trouble spot local discharge signal, being converted to digital signal and exporting by described local discharge signal;
Signal processing module, for receiving the described digital signal that described signal acquisition module exports, analyzing and processing is carried out to described digital signal, judge the failure message of described cable accessory according to result, described failure message comprises at least one in fault type, fault size and abort situation.
Further, described signal acquisition module comprises:
High Frequency Current Sensor: for gathering described local discharge signal;
Date Conversion Unit, for receiving the described local discharge signal that described High Frequency Current Sensor exports, being converted to described digital signal by described local discharge signal and exporting.
Further, described a kind of cable accessory fault analysis detection system, it is characterized in that, described signal acquisition module also comprises:
Shield assembly, for shielding described High Frequency Current Sensor, filtering environmental noise is to the interference of described High Frequency Current Sensor.
Further, described signal processing module comprises:
Signal processing unit, for extracting the characteristic parameter of signal to described Digital Signal Analysis process;
Fault identification unit, for fault type and the size of cable accessory according to described characteristic parameter identification.
A kind of cable accessory fault analysis detection system, also comprises:
Storage unit, for store the described cable accessory set up in advance at least one fault mode under corresponding Fault characteristic parameters;
Described fault identification unit is specifically for described characteristic parameter and the described Fault characteristic parameters read from described storage unit the are compared fault type and size that identify described cable accessory.
Further, described a kind of cable accessory fault analysis detection system, also comprises:
Aging Assessment unit, carries out evaluates calculation for the described failure message calculated according to described signal processing module, obtains aging performance and the residual life of described cable accessory.
Described a kind of cable accessory fault analysis detection system, also comprises:
Data interaction module, is connected with described data processing module, for receiving peripheral operation instruction, controls the mode of operation of described data processing module according to described peripheral operation instruction; Or for receiving described failure message that described data processing module exports or the described aging performance that described Aging Assessment unit exports and residual life showing.
Further, described a kind of cable accessory fault analysis detection system, also comprises:
Fault restoration module, for receiving the failure message of described cable accessory that described signal processing module exports, exporting according to the fault type of described cable accessory, fault size and abort situation feedback and repairing suggestion accordingly;
Described data interaction module is also for showing described reparation suggestion.
Further, described fault restoration module comprises:
Second storage unit, for prestoring the first corresponding under various accident defect repair data of described cable accessory;
Data processing unit, obtains the second repair data for the fault type according to described cable accessory, fault size and abort situation process, and described second repair data is obtained corresponding reparation suggestion with described first repair data comparison and exports.
Further, described fault restoration module also comprises:
Unit is repaired in simulation, for receiving the second repair data that described data processing unit sends, carries out simulation repair process to described second repair data, result is repaired in simulation and sends to described data interaction module to show.
Compared with prior art, beneficial effect of the present invention
1, in a kind of cable accessory fault analysis detection system of the present invention, whether signal analyse block can not only there is shelf depreciation by detection streamer annex, also by analyzing, judges fault type and size, make analysis result more comprehensive, improve the security that cable accessory uses.
2, in order to ensure the accuracy of signals collecting, invention increases shield assembly, shield assembly adopts metallic shield, can effectively filtering external environmental noise to the interference of acquisition system, and the personal safety of testing staff can be ensured.
3, in order to improve the efficiency analyzed and detect, invention increases Aging Assessment unit, the aging performance and residual life that draw cable accessory can be analyzed, make testing result more perfect.
4, conveniently Site Detection personnel handling failure faster, invention increases fault restoration module, described fault restoration module can provide reparation advisory opinion to Site Detection personnel, and corresponding repairing model can be simulated, facilitate Site Detection personnel to make correcting strategy sooner, solve cable accessory fault faster.
Accompanying drawing explanation
Fig. 1 is the cable accessory fault analysis detection system structured flowchart in the embodiment of the present invention 1.
Fig. 2 is the information acquisition module structured flowchart of the cable accessory fault analysis detection system in the embodiment of the present invention 1.
Fig. 3 is the information acquisition module structured flowchart of cable accessory fault analysis detection system preferably in the embodiment of the present invention 1.
Fig. 4 is the signal analyse block structured flowchart of the cable accessory fault analysis detection system in the embodiment of the present invention 1.
Fig. 5 is the signal analyse block structured flowchart of the cable accessory fault analysis detection system in the embodiment of the present invention 2.
Fig. 6 is the cable accessory fault analysis detection system structured flowchart in the embodiment of the present invention 3.
Fig. 7 is the simulation reparation modular structure block diagram of the cable accessory fault analysis detection system in the embodiment of the present invention 3.
Fig. 8 is the simulation reparation modular structure block diagram of the cable accessory fault analysis detection system in the embodiment of the present invention 4.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on content of the present invention all belong to scope of the present invention.
Embodiment 1:
Be the cable accessory fault analysis detection system shown in the embodiment of the present invention 1 shown in Fig. 1, comprise signal acquisition module 1, signal analyse block 2.
Signal acquisition module 1, for gathering cable accessory trouble spot local discharge signal, being converted to digital signal and exporting by described local discharge signal; Signal processing module 2, for receiving the described digital signal that described signal acquisition module 1 exports, analyzing and processing is carried out to described digital signal, judge the failure message of described cable accessory according to result, described failure message comprises at least one in fault type, fault size and abort situation.
Concrete, be the information acquisition module structured flowchart of the cable accessory fault analysis detection system shown in the embodiment of the present invention 1 see Fig. 2, Fig. 2.
Described signal acquisition module 1 comprises:
High Frequency Current Sensor 11: for gathering described local discharge signal;
Date Conversion Unit 12, for receiving the described local discharge signal that described High Frequency Current Sensor exports, being converted to described digital signal by described local discharge signal and exporting.
Preferably, see Fig. 3, Fig. 3 be the signal acquisition module structured flowchart of the cable accessory fault analysis detection system preferably shown in the embodiment of the present invention 1.
Described signal acquisition module 1 also comprises: shield assembly 13, and for shielding described High Frequency Current Sensor, filtering environmental noise is to the interference of described High Frequency Current Sensor.
Concrete, be the signal analyse block structured flowchart of the cable accessory fault analysis detection system in the embodiment of the present invention 1 see Fig. 4, Fig. 4.
Described signal processing module 2 comprises:
Signal processing unit 21, for extracting the characteristic parameter of signal to described Digital Signal Analysis process;
Fault identification unit 22, for fault type and the size of cable accessory according to described characteristic parameter identification.
Storage unit 23, for store the described cable accessory set up in advance at least one fault mode under corresponding Fault characteristic parameters;
Described fault identification unit 22 is specifically for described characteristic parameter and the described Fault characteristic parameters read from described storage unit the are compared fault type and size that identify described cable accessory.
Described cable accessory is analyzed detection system and is also comprised: data interaction module, is connected with described data processing module, for receiving peripheral operation instruction, controls the mode of operation of described data processing module according to described peripheral operation instruction.
Concrete, the mode of operation of described data processing module is that it is one or more optionally can to export in described failure message to described data interaction module according to peripheral operation instruction.
Concrete, in one embodiment, see Fig. 1-Fig. 5, described cable accessory fault analysis detection system implementation step is as follows:
Step 1, first multiple typical cable accessory accident defect model is made, respectively high voltage is applied to these models, fault local discharge signal is gathered by signal acquiring system, and extract Fault characteristic parameters respectively, thus set up cable accessory fault model storehouse, storage unit 23 storage failure characteristic parameter and corresponding fault type, the fault size of described fault parameter.
Step 2, signal acquiring system 1 gathers cable accessory trouble spot local discharge signal, described local discharge signal is converted to digital signal and exports signal processing module 2 to.
Step 3, the signal processing unit 21 in signal processing module 2 analyzes described digital signal, extracts characteristic parameter; Data in the described characteristic parameter received and described storage unit 23 are compared by fault identification unit 22, mode identification method is adopted to identify the failure message of described cable accessory and export, described mode identification method is prior art, is not described in detail herein.
Step 4, described data interaction module receives described message processing module 2 and exports failure message, optionally exports in described failure message one or more according to peripheral operation instruction.
The present invention, by analyzing, judges fault type and size, makes analysis result more comprehensive, improves the security that cable accessory uses.
Embodiment 2:
Cable accessory fault analysis detection system as shown in Figure 5, in the present embodiment cable accessory fault analysis detection system comprise content in embodiment 1, its difference is only, the signal analyse block 2 of this cable accessory fault analysis detection system also comprises:
Aging Assessment unit 24, carries out evaluates calculation for the described failure message calculated according to described signal processing module, obtains aging performance and the residual life of described cable accessory.
Concrete, in one embodiment, with further reference to Fig. 6, described cable accessory fault analysis detection system implementation step comprises the step 1-step 3 in embodiment 1, also comprises as follows:
Step 4, described failure message outputs to described Aging Assessment unit 24, and described Aging Assessment unit 24 carries out evaluates calculation according to described failure message, obtains aging performance and the residual life of described cable accessory.
Step 5, described data interaction module receives described message processing module 2 and exports described failure message, the aging performance of cable accessory and residual life, optionally exports in described message processing module 2 output content one or more according to peripheral operation instruction.
Cable accessory fault analysis detection system of the present invention adds Aging Assessment unit, improves the efficiency analyzed and detect, can analyze the aging performance and residual life that draw cable accessory, make testing result more perfect.
Embodiment 3:
Cable accessory fault analysis detection system as shown in Figure 6, in the present embodiment cable accessory fault analysis detection system comprise content in embodiment 2, its difference is only, this cable accessory fault analysis detection system also comprises:
Fault restoration module 3, for receiving the failure message of described cable accessory that described signal processing module exports, exporting according to the fault type of described cable accessory, fault size and abort situation feedback and repairing suggestion accordingly.
Concrete, be the signal analyse block structured flowchart of the cable accessory fault analysis detection system in the embodiment of the present invention 3 see Fig. 7, Fig. 7.
Described fault restoration module 3 comprises:
Second storage unit 32, for prestoring the first corresponding under various accident defect repair data of described cable accessory;
Data processing unit 31, obtains the second repair data for the fault type according to described cable accessory, fault size and abort situation process, and described second repair data is obtained corresponding reparation suggestion with described first repair data comparison and exports.
Concrete, in one embodiment, with further reference to Fig. 7, described cable accessory fault analysis detection system implementation step comprises the step 1-step 4 in embodiment 2, also comprises as follows:
Step 5, sets up cable accessory fault restoration model, and the second storage unit 32 stores the first corresponding under various accident defect repair data of described cable accessory.
Step 6, described data processing unit 31 receives the failure message of the described cable accessory that described signal processing module 2 exports, process obtains described second repair data, described first repair data stored in described second repair data and described second storage unit 32 is compared, obtains described reparation suggestion and export.
Step 7, described data interaction module receives described message processing module 2 and exports the described reparation suggestion that described failure message, the aging performance of cable accessory and residual life and described fault restoration module 3 export, and optionally exports in foregoing one or more according to peripheral operation instruction.
Cable accessory fault analysis detection system of the present invention adds fault restoration module, and described fault restoration module can provide reparation advisory opinion to Site Detection personnel, facilitates Site Detection personnel handling failure faster.
Embodiment 4:
Cable accessory fault analysis detection system as shown in Figure 8, in the present embodiment cable accessory fault analysis detection system comprise content in embodiment 3, its difference is only, the fault restoration module of this cable accessory fault analysis detection system also comprises:
Unit 33 is repaired in simulation, for receiving the second repair data that described data processing unit 31 sends, carries out simulation repair process to described second repair data, result is repaired in simulation and sends to described data interaction module to show.
Concrete, in one embodiment, with further reference to Fig. 8, described cable accessory fault analysis detection system implementation step comprises the step 1-step 6 in embodiment 3, also comprises as follows:
Step 7, described second repair data that unit 33 receives the output of described data processing unit 31 is repaired in described simulation, carries out simulation repair process to described second repair data, and simulation reparation result is exported.
Step 8, described data interaction module receives that described message processing module 2 exports the described reparation suggestion that described failure message, the aging performance of cable accessory and residual life and described fault restoration module 3 export, result is repaired in described simulation, optionally exports in foregoing one or more according to peripheral operation instruction.
Cable firmware failure of the present invention is analyzed detection system and is added simulation reparation unit, and unit is repaired in described simulation can simulate corresponding repairing model, facilitates Site Detection personnel to make correcting strategy sooner, solves cable accessory fault faster.
By reference to the accompanying drawings the specific embodiment of the present invention is described in detail above, but the present invention is not restricted to above-mentioned embodiment, in the spirit and scope situation of claim not departing from the application, those skilled in the art can make various amendment or remodeling.
Claims (10)
1. a cable accessory fault analysis detection system, is characterized in that, comprising:
Signal acquisition module, for gathering cable accessory trouble spot local discharge signal, being converted to digital signal and exporting by described local discharge signal;
Signal processing module, for receiving the described digital signal that described signal acquisition module exports, analyzing and processing is carried out to described digital signal, judge the failure message of described cable accessory according to result, described failure message comprises at least one in fault type, fault size and abort situation.
2. a kind of cable accessory fault analysis detection system according to claim 1, it is characterized in that, described signal acquisition module comprises:
High Frequency Current Sensor: for gathering described local discharge signal;
Date Conversion Unit, for receiving the described local discharge signal that described High Frequency Current Sensor exports, being converted to described digital signal by described local discharge signal and exporting.
3. a kind of cable accessory fault analysis detection system according to claim 2, it is characterized in that, described signal acquisition module also comprises:
Shield assembly, for shielding described High Frequency Current Sensor, filtering environmental noise is to the interference of described High Frequency Current Sensor.
4. a kind of cable accessory fault analysis detection system according to claim 1, it is characterized in that, described signal processing module comprises:
Signal processing unit, for extracting the characteristic parameter of signal to described Digital Signal Analysis process;
Fault identification unit, for fault type and the size of cable accessory according to described characteristic parameter identification.
5. a kind of cable accessory fault analysis detection system according to claim 4, is characterized in that,
Described signal processing module also comprises:
Storage unit, for store the described cable accessory set up in advance at least one fault mode under corresponding Fault characteristic parameters;
Described fault identification unit is specifically for described characteristic parameter and the described Fault characteristic parameters read from described storage unit the are compared fault type and size that identify described cable accessory.
6. a kind of cable accessory fault analysis detection system according to any one of claim 1-5, it is characterized in that, described signal processing module also comprises:
Aging Assessment unit, carries out evaluates calculation for the described failure message calculated according to described signal processing module, obtains aging performance and the residual life of described cable accessory.
7. a kind of cable accessory fault analysis detection system according to claim 6, is characterized in that, also comprise:
Data interaction module, is connected with described data processing module, for receiving peripheral operation instruction, controls the mode of operation of described data processing module according to described peripheral operation instruction; Or for receiving described failure message that described data processing module exports or the described aging performance that described Aging Assessment unit exports and residual life showing.
8. a kind of cable accessory fault analysis detection system according to claim 7, is characterized in that, also comprise:
Fault restoration module, for receiving the failure message of described cable accessory that described signal processing module exports, exporting according to the fault type of described cable accessory, fault size and abort situation feedback and repairing suggestion accordingly;
Described data interaction module is also for showing described reparation suggestion.
9. a kind of cable accessory fault analysis detection system according to claim 8, it is characterized in that, described fault restoration module comprises:
Second storage unit, for prestoring the first corresponding under various accident defect repair data of described cable accessory;
Data processing unit, obtains the second repair data for the fault type according to described cable accessory, fault size and abort situation process, and described second repair data is obtained corresponding reparation suggestion with described first repair data comparison and exports.
10. a kind of cable accessory fault analysis detection system according to claim 9, it is characterized in that, described fault restoration module also comprises:
Unit is repaired in simulation, for receiving the second repair data that described data processing unit sends, carries out simulation repair process to described second repair data, result is repaired in simulation and sends to described data interaction module to show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191827.XA CN104777386A (en) | 2015-04-22 | 2015-04-22 | Failure analyzing and detecting system for cable accessories |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191827.XA CN104777386A (en) | 2015-04-22 | 2015-04-22 | Failure analyzing and detecting system for cable accessories |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104777386A true CN104777386A (en) | 2015-07-15 |
Family
ID=53618972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510191827.XA Pending CN104777386A (en) | 2015-04-22 | 2015-04-22 | Failure analyzing and detecting system for cable accessories |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104777386A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021957A (en) * | 2015-08-03 | 2015-11-04 | 西南石油大学 | Power cable accessory fault identification method and system |
| CN105951921A (en) * | 2016-06-30 | 2016-09-21 | 徐工集团工程机械有限公司 | Electric underground scraper coil cable fault detection method, device and system |
| 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 |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851489A (en) * | 2006-05-22 | 2006-10-25 | 西南交通大学 | Variable frequency high-voltage motor insulated local discharge measuring method and its special measuring instrument |
| US20060259271A1 (en) * | 2005-05-12 | 2006-11-16 | General Electric Company | Method and system for predicting remaining life for motors featuring on-line insulation condition monitor |
| US20090228240A1 (en) * | 2008-03-07 | 2009-09-10 | Nokia Corporation | Electromagnetic interference sensor device and method and computer program |
| CN102508135A (en) * | 2011-11-23 | 2012-06-20 | 华南理工大学 | Cable oscillation wave local discharge measuring and positioning system based on cloud computing |
| CN202393868U (en) * | 2011-11-23 | 2012-08-22 | 华南理工大学 | Cable oscillatory wave local discharge measurement and location system based on cloud calculation |
| CN102735996A (en) * | 2012-07-17 | 2012-10-17 | 国家电网公司 | Exact locating method for fault points of submarine cable |
| CN203054020U (en) * | 2012-12-12 | 2013-07-10 | 安徽省电力公司亳州供电公司 | Partial-discharge high-frequency current sensor shielding case and current sensor assembly |
| CN203054162U (en) * | 2012-12-10 | 2013-07-10 | 铜仁供电局 | Comprehensive tester for partial discharge of high-voltage cable |
| CN103364699A (en) * | 2013-07-19 | 2013-10-23 | 华北电力大学 | Cable discharging fault detection device |
| CN203630279U (en) * | 2013-11-12 | 2014-06-04 | 国网上海市电力公司 | Detection device for partial discharge of switch cabinet |
| CN203759190U (en) * | 2014-03-20 | 2014-08-06 | 陕西公众智能科技有限公司 | Distribution network cable partial discharge on-line monitoring and discharge position positioning system |
| CN104283318A (en) * | 2014-10-24 | 2015-01-14 | 国家电网公司 | Power equipment integrated monitoring and early warning system based on big data and analysis method thereof |
-
2015
- 2015-04-22 CN CN201510191827.XA patent/CN104777386A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060259271A1 (en) * | 2005-05-12 | 2006-11-16 | General Electric Company | Method and system for predicting remaining life for motors featuring on-line insulation condition monitor |
| CN1851489A (en) * | 2006-05-22 | 2006-10-25 | 西南交通大学 | Variable frequency high-voltage motor insulated local discharge measuring method and its special measuring instrument |
| US20090228240A1 (en) * | 2008-03-07 | 2009-09-10 | Nokia Corporation | Electromagnetic interference sensor device and method and computer program |
| CN102508135A (en) * | 2011-11-23 | 2012-06-20 | 华南理工大学 | Cable oscillation wave local discharge measuring and positioning system based on cloud computing |
| CN202393868U (en) * | 2011-11-23 | 2012-08-22 | 华南理工大学 | Cable oscillatory wave local discharge measurement and location system based on cloud calculation |
| CN102735996A (en) * | 2012-07-17 | 2012-10-17 | 国家电网公司 | Exact locating method for fault points of submarine cable |
| CN203054162U (en) * | 2012-12-10 | 2013-07-10 | 铜仁供电局 | Comprehensive tester for partial discharge of high-voltage cable |
| CN203054020U (en) * | 2012-12-12 | 2013-07-10 | 安徽省电力公司亳州供电公司 | Partial-discharge high-frequency current sensor shielding case and current sensor assembly |
| CN103364699A (en) * | 2013-07-19 | 2013-10-23 | 华北电力大学 | Cable discharging fault detection device |
| CN203630279U (en) * | 2013-11-12 | 2014-06-04 | 国网上海市电力公司 | Detection device for partial discharge of switch cabinet |
| CN203759190U (en) * | 2014-03-20 | 2014-08-06 | 陕西公众智能科技有限公司 | Distribution network cable partial discharge on-line monitoring and discharge position positioning system |
| CN104283318A (en) * | 2014-10-24 | 2015-01-14 | 国家电网公司 | Power equipment integrated monitoring and early warning system based on big data and analysis method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021957A (en) * | 2015-08-03 | 2015-11-04 | 西南石油大学 | Power cable accessory fault identification method and system |
| CN105021957B (en) * | 2015-08-03 | 2018-07-06 | 西南石油大学 | A kind of electric cable fitting fault recognition method and system |
| CN105951921A (en) * | 2016-06-30 | 2016-09-21 | 徐工集团工程机械有限公司 | Electric underground scraper coil cable fault detection method, device and system |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110018389B (en) | Online fault monitoring method and system for power transmission line | |
| CN103490511B (en) | Power distribution network communication terminal detection system and method | |
| CN110456234B (en) | Fault arc detection method, device and system | |
| CN102636768B (en) | A kind of lightning arrester on-line computing model on-line testing method | |
| CN105116283A (en) | Downhole power cable insulation monitoring device | |
| CN105116300A (en) | Downhole cable insulation online monitoring system | |
| CN202837477U (en) | Cable defect simulation test device | |
| CN104849628A (en) | Fault analysis detection method for cable accessory | |
| CN105321039B (en) | Online monitoring data management system and method for isolating switch | |
| KR101975443B1 (en) | Automatic detecting system and method of ultrasonic waves for degraded components in distribution power facility | |
| CN104316847A (en) | On-line monitoring and positioning system for partial discharge of transformer station | |
| CN116520093B (en) | High-voltage bus operation fault positioning method and device | |
| CN104333383A (en) | FPGA-based A/D real-time fault diagnosing method | |
| CN104777386A (en) | Failure analyzing and detecting system for cable accessories | |
| CN106549366A (en) | Electrical Safety detection protection circuit, switchgear or socket | |
| CN114035555B (en) | PLC controller fault detection system | |
| CN110596447A (en) | Electric field measurement-based charged equipment surrounding safety detection device and detection method thereof | |
| CN105699866A (en) | Method for detecting track traffic insulation parts through adoption of ultraviolet corona technology | |
| CN102130443B (en) | Dynamic self-adaptive protection device of power capacitor and control method | |
| RU112525U1 (en) | AUTOMATED DIAGNOSTIC AND MONITORING SYSTEM OF POWER CABLE LINES INSULATION | |
| CN105866592A (en) | System and method for acquiring dynamic reactive power compensation response waveforms | |
| CN212007767U (en) | Power transformer mechanical state detection system | |
| CN103744006B (en) | High voltage electric equipment inside loosens the shelf depreciation positioning diagnosticing method produced | |
| CN103344893A (en) | Distributed cable partial discharge measuring method based on frequency conversion series resonance high-voltage holding test | |
| CN205786889U (en) | Dynamic passive compensation response wave shape acquisition system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |