CN110196380A - A kind of live detection method for distribution cable shelf depreciation - Google Patents
A kind of live detection method for distribution cable shelf depreciation Download PDFInfo
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- CN110196380A CN110196380A CN201910557354.9A CN201910557354A CN110196380A CN 110196380 A CN110196380 A CN 110196380A CN 201910557354 A CN201910557354 A CN 201910557354A CN 110196380 A CN110196380 A CN 110196380A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of live detection methods for distribution cable shelf depreciation, the present invention is specifically includes the following steps: S1, setting electric discharge alarm threshold value, S2, discharge signal are handled, S3, discharge examination signal detection, S4, discharge information handle and the transmission of S5, information, and the present invention relates to electric power network detection technique fields.This is used for the live detection method of distribution cable shelf depreciation, by the way that multiple current sensors are arranged, it discharges distribution cable income and monitors, interference removal and signal amplification are carried out to detection signal, it is compared with preset threshold, pass through judging region of discharge for system, discharge frequency and discharge time are detected, collected local discharge signal is handled, reject interference signal, to reduce outer signals interference, improve cable local discharge position judgment accuracy, it can be by the discharge information real-time informing of monitoring to maintenance personal, it can be in time to being repaired at the electric discharge of cable.
Description
Technical field
The present invention relates to electric power network detection technique field, specially a kind of band electric-examination for distribution cable shelf depreciation
Survey method.
Background technique
With the development of science and technology, electric energy has become one of the energy indispensable in production, development and life, electric energy
It is transmitted with corresponding electric energy is be unable to do without, and distribution cable is one of most important equipment in electric energy transmission process, distribution cable fortune
Capable economy, the main ambient enviroment of reliability, service condition and system of laying influence will if there are problems for it
The current-carrying capacity of distribution cable is influenced, to transmission bottlenecks occur, the normal utilization of electric energy is influenced, there was only regional area in insulator
The electric discharge of generation can also occur without that can occur near conductor through applying between alive conductor on other ground
Side, this phenomenon are known as shelf depreciation, the electric discharge that Electric Power Equipment Insulation occurs in subrange under sufficiently strong electric field action,
This electric discharge is limited with only causing the insulation between conductor locally short (road and bridge) to connect without forming conductive channel, each time shelf depreciation
Can all there are some influences to dielectric, influence of the slight shelf depreciation to Electric Power Equipment Insulation is smaller, under dielectric strength
Drop is slower, and strong shelf depreciation, then dielectric strength can be made to decline quickly, this is make the apparatus insulated damage of high-tension electricity one
A key factor just will affect insulation life when shelf depreciation occurs for insulation, discharge every time, high-energy electron or acceleration electronics
Impact, especially long-term shelf depreciation effect can all cause the physical effect and chemical reaction of diversified forms, such as charging point
When hitting bubble outer wall, it is possible to interrupt the chemical bond of insulation and crack, destroy the molecular structure of insulation, cause to insulate bad
Change, accelerates insulation damages process.
Daily maintenance can be carried out to cable by the way of carrying out part detection electric discharge to distribution cable in the prior art
And maintenance, the monitoring that generally can be all discharged using Partial discharge detector, but easily by ambient noise and outer in measuring
Boundary's electromagnetic interference noise floods, and causes to be unable to accurate judgement cable local discharge position, and the data of monitoring are faint unobvious, maintenance
Personnel cannot at the first time repair distribution cable.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of live detection sides for distribution cable shelf depreciation
Method solves and is unable to accurate judgement cable local discharge position, and the data of monitoring are faint unobvious, maintenance personal cannot first when
Between the problem of distribution cable is repaired.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: one kind is locally put for distribution cable
The live detection method of electricity, specifically includes the following steps:
S1, setting electric discharge alarm threshold value: first determine to need to input the normal current value of distribution cable, higher than the electric current of standard
Value is electric discharge alarm threshold value, then will be discharged in alarm threshold value input data comparator by key, as comparing data, electric current
Sensor can detect the electric current of distribution cable, and the data transfer that then will test to data comparator compares in data
The current value that will test in device is compared with electric discharge alarm threshold value, and data comparator is anti-through feedback unit by electric discharge alarm threshold value
It is fed to control centre；
S2, discharge signal are handled: signal immunity module while detection, does current sensor to surrounding
It disturbs signal to be protected, the signal of detection carries out signal by signal processing module in the processing of interference signal, the electric current of detection
If value is higher than electric discharge alarm threshold value, the signal message that control centre will will test is transmitted to by wireless messages transceiver module
Monitoring center, while can also control voice announcer and indicator light in alarm unit and be reminded；
S3, discharge examination signal detection: by discharge frequency detection module to the discharge frequency at the electric discharge of distribution cable
It is detected, discharge time detection module detects the time of electric discharge at the same time, passes through region of discharge analysis module pair
Each local discharge frequency is analyzed with discharge time, and electric discharge alarm threshold value is combined to put a position confirmation module standard
True identifies discharge position, and is transmitted the data of analysis by wireless communication module；
S4, discharge information processing: local discharge signal pre-filtering module is by the region of discharge detected in monitoring unit and puts
Interference information in electric Time Correlation Data is filtered, and is transmitted to control centre, and related data is stored in by control centre
In networking large database concept；
The transmission of S5, information: by wireless messages transceiver module by data information transfer to monitoring center, wireless receiving and dispatching mould
Block receives data, and is shown by display module, can explicitly see relevant data, pass through wireless transmission
Shelf depreciation specific location is transmitted mobile terminal by module, and maintenance personal can directly repair.
Preferably, it is described for distribution cable shelf depreciation electrification detection system include control centre, signal acquisition unit,
Data comparing unit and detection unit, the output end of the signal acquisition unit electrically connect with the input terminal of data comparing unit
Connect, and the input terminal of the output end of data comparing unit and feedback unit be electrically connected, the output end of the feedback unit with
The input terminal of control centre is electrically connected, and the input terminal of the output end of control centre and data comparing unit is electrically connected,
The control centre is bi-directionally connected with detection unit realization.
Preferably, the signal acquisition unit includes current sensor, and current sensor is provided with N number of, the number
Include data comparator according to comparing unit, and data comparator be provided with it is N number of.
Preferably, the detection unit includes processing center, and the input terminal and discharge frequency of the processing center detect mould
The output end of block is electrically connected, and the output end of the input terminal of processing center and discharge time detection module is electrically connected, institute
The input terminal of the output end and region of discharge analysis module of stating processing center is electrically connected, and region of discharge analysis module is defeated
The input terminal of outlet and discharge position confirmation module is electrically connected, the output end and processing center of the discharge position confirmation module
Input terminal be electrically connected, the processing center and wireless communication module are realized and are bi-directionally connected.
Preferably, the input terminal of the signal acquisition unit and the output end of signal immunity module are electrically connected, and
Control centre is bi-directionally connected with networking large database concept realization, and the input terminal of the control centre and the output end of key electrically connect
It connects, and the output end of the input terminal of key and power module is electrically connected, the output end and signal acquisition of the power module
The input terminal of unit is electrically connected.
Preferably, the input terminal of the control centre and the output end of safety detection module are electrically connected, and in control
The heart is bi-directionally connected with the realization of wireless signal transceiver module, and the control centre realizes two-way with local discharge signal pre-filtering module
Connection, and control centre is bi-directionally connected with signal processing module realization, and the wireless signal transceiver module and monitoring center are real
Now it is bi-directionally connected.
Preferably, the monitoring center includes central computer, and the central computer and radio receiving transmitting module realization are double
To connection, and the input terminal of the output end of central computer and display module is electrically connected, the output of the central computer
End and the input terminal of wireless transport module are electrically connected, and the input terminal of the output end of wireless transport module and mobile terminal electricity
Property connection.
Preferably, the input terminal of the output end and alarm unit of the control centre is electrically connected, the alarm unit packet
Include voice announcer and indicator light.
(3) beneficial effect
The present invention provides a kind of live detection methods for distribution cable shelf depreciation.Have compared with prior art
Below the utility model has the advantages that
(1), live detection method for being used for distribution cable shelf depreciation, specifically includes the following steps: S1, setting electric discharge
Alarm threshold value: first determining to need to input the normal current value of distribution cable, and the current value higher than standard is electric discharge alarm threshold value, so
Afterwards by key by electric discharge alarm threshold value input data comparator, as data are compared, S2, discharge signal are handled: letter
Number immunity module while detection, protects the interference signal of surrounding, the signal of detection passes through current sensor
Signal processing module carries out the processing of interference signal to signal, S3, discharge examination signal detection: passes through discharge frequency detection module
Discharge frequency at the electric discharge of distribution cable is detected, discharge time detection module carries out the time of electric discharge at the same time
Detection, S4, discharge information processing: when local discharge signal pre-filtering module is by the region of discharge detected in monitoring unit and electric discharge
Between interference information in related data be filtered, the transmission of S5, information: data information is passed by wireless messages transceiver module
Monitoring center is transported to, and radio receiving transmitting module receives data, shelf depreciation specific location is passed by wireless transport module
Defeated mobile terminal, maintenance personal can directly repair, and by the way that multiple current sensors are arranged, put to distribution cable income
Pyroelectric monitor carries out interference removal to detection signal and signal amplifies, is compared with preset threshold, by system to electric discharge
Region is judged, the discharge position of distribution cable can be accurately found.
(2), the live detection method for being used for distribution cable shelf depreciation passes through the input terminal and electric discharge frequency of processing center
The output end of rate detection module is electrically connected, and the output end of the input terminal of processing center and discharge time detection module is electrical
Connection, the output end of processing center and the input terminal of region of discharge analysis module are electrically connected, and region of discharge analysis module
Output end and discharge position confirmation module input terminal be electrically connected, the output end and processing center of discharge position confirmation module
Input terminal be electrically connected, processing center and wireless communication module realization be bi-directionally connected, to discharge frequency and discharge time progress
Detection, handles collected local discharge signal, rejects interference signal, to reduce outer signals interference, improves electricity
Cable partial discharge position judgment accuracy.
(3), the live detection method for being used for distribution cable shelf depreciation, includes central computer by monitoring center,
Central computer is bi-directionally connected with radio receiving transmitting module realization, and the input terminal of the output end of central computer and display module
It being electrically connected, the output end of central computer and the input terminal of wireless transport module are electrically connected, and wireless transport module
The input terminal of output end and mobile terminal is electrically connected, and the output end of control centre and the input terminal of alarm unit are electrically connected,
Alarm unit includes voice announcer and indicator light, can by the discharge information real-time informing of monitoring to maintenance personal, can and
When to being repaired at the electric discharge of cable, improve the safety that distribution cable uses.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 is the structural principle block diagram of present system；
Fig. 3 is the structural principle block diagram of detection unit of the present invention；
Fig. 4 is the structural principle block diagram of monitoring center of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the embodiment of the present invention provides a kind of technical solution: a kind of band for distribution cable shelf depreciation
Electric detection method, specifically includes the following steps:
S1, setting electric discharge alarm threshold value: first determine to need to input the normal current value of distribution cable, higher than the electric current of standard
Value is electric discharge alarm threshold value, then will be discharged in alarm threshold value input data comparator by key, as comparing data, electric current
Sensor can detect the electric current of distribution cable, and the data transfer that then will test to data comparator compares in data
The current value that will test in device is compared with electric discharge alarm threshold value, and data comparator is anti-through feedback unit by electric discharge alarm threshold value
It is fed to control centre；
S2, discharge signal are handled: signal immunity module while detection, does current sensor to surrounding
It disturbs signal to be protected, the signal of detection carries out signal by signal processing module in the processing of interference signal, the electric current of detection
If value is higher than electric discharge alarm threshold value, the signal message that control centre will will test is transmitted to by wireless messages transceiver module
Monitoring center, while can also control voice announcer and indicator light in alarm unit and be reminded；
S3, discharge examination signal detection: by discharge frequency detection module to the discharge frequency at the electric discharge of distribution cable
It is detected, discharge time detection module detects the time of electric discharge at the same time, passes through region of discharge analysis module pair
Each local discharge frequency is analyzed with discharge time, and electric discharge alarm threshold value is combined to put a position confirmation module standard
True identifies discharge position, and is transmitted the data of analysis by wireless communication module；
S4, discharge information processing: local discharge signal pre-filtering module is by the region of discharge detected in monitoring unit and puts
Interference information in electric Time Correlation Data is filtered, and is transmitted to control centre, and related data is stored in by control centre
In networking large database concept；
The transmission of S5, information: by wireless messages transceiver module by data information transfer to monitoring center, wireless receiving and dispatching mould
Block receives data, and is shown by display module, can explicitly see relevant data, pass through wireless transmission
Shelf depreciation specific location is transmitted mobile terminal by module, and maintenance personal can directly repair.
It include control centre, signal acquisition unit, number for distribution cable shelf depreciation electrification detection system in the present invention
According to comparing unit and detection unit, the output end of the signal acquisition unit and the input terminal of data comparing unit are electrically connected,
And the output end of data comparing unit and the input terminal of feedback unit are electrically connected, the output end of the feedback unit and control
The input terminal at center is electrically connected, and the input terminal of the output end of control centre and data comparing unit is electrically connected, described
Control centre is bi-directionally connected with detection unit realization.
In the present invention, signal acquisition unit includes current sensor, and current sensor is provided with N number of, the data
Comparing unit includes data comparator, and data comparator be provided with it is N number of.
In the present invention, detection unit includes processing center, the input terminal and discharge frequency detection module of the processing center
Output end be electrically connected, and the output end of the input terminal of processing center and discharge time detection module is electrically connected, described
The output end of processing center and the input terminal of region of discharge analysis module are electrically connected, and the output of region of discharge analysis module
End is electrically connected with the input terminal of discharge position confirmation module, the output end of the discharge position confirmation module and processing center
Input terminal is electrically connected, and the processing center is bi-directionally connected with wireless communication module realization.
In the present invention, the input terminal of signal acquisition unit and the output end of signal immunity module are electrically connected, and are controlled
Center processed is bi-directionally connected with networking large database concept realization, and the input terminal of the control centre and the output end of key are electrically connected,
And the input terminal of key and the output end of power module are electrically connected, the output end and signal acquisition unit of the power module
Input terminal be electrically connected.
In the present invention, the input terminal of control centre and the output end of safety detection module are electrically connected, and control centre
It is bi-directionally connected with the realization of wireless signal transceiver module, the control centre and local discharge signal pre-filtering module realize two-way company
It connects, and control centre is bi-directionally connected with signal processing module realization, the wireless signal transceiver module and monitoring center are realized
It is bi-directionally connected.
In the present invention, monitoring center includes central computer, and the central computer is realized two-way with radio receiving transmitting module
Connection, and the input terminal of the output end of central computer and display module is electrically connected, the output end of the central computer
It is electrically connected with the input terminal of wireless transport module, and the input terminal of the output end of wireless transport module and mobile terminal is electrical
Connection.
In the present invention, the output end of control centre and the input terminal of alarm unit are electrically connected, and the alarm unit includes
Voice announcer and indicator light.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of live detection method for distribution cable shelf depreciation, it is characterised in that: specifically includes the following steps:
S1, setting electric discharge alarm threshold value: first determine to need to input the normal current value of distribution cable, the current value higher than standard is
Discharge alarm threshold value, then will be discharged in alarm threshold value input data comparator by key, as comparing data, current sense
Device can detect the electric current of distribution cable, the data transfer that then will test to data comparator, in data comparator
The current value that will test is compared with electric discharge alarm threshold value, and data comparator feeds back to electric discharge alarm threshold value through feedback unit
Control centre；
S2, discharge signal are handled: signal immunity module while detection, believes the interference of surrounding current sensor
It number is protected, the signal of detection carries out the processing of interference signal by signal processing module to signal, and the current value of detection is such as
Fruit is higher than electric discharge alarm threshold value, and the signal message that control centre will will test is transmitted to monitoring by wireless messages transceiver module
Center, while can also control voice announcer and indicator light in alarm unit and be reminded；
S3, discharge examination signal detection: the discharge frequency at the electric discharge of distribution cable is carried out by discharge frequency detection module
Detection, discharge time detection module detects the time of electric discharge at the same time, by region of discharge analysis module to each
The discharge frequency of part is analyzed with discharge time, and combine the alarm threshold value that discharges to put a position confirmation module it is accurate
It identifies discharge position, and is transmitted the data of analysis by wireless communication module；
S4, discharge information processing: when local discharge signal pre-filtering module is by the region of discharge detected in monitoring unit and electric discharge
Between interference information in related data be filtered, and be transmitted to control centre, related data is stored in networking by control centre
In large database concept；
The transmission of S5, information: by wireless messages transceiver module by data information transfer to monitoring center, radio receiving transmitting module will
Data are received, and are shown by display module, can explicitly be seen relevant data, be passed through wireless transport module
Shelf depreciation specific location is transmitted into mobile terminal, maintenance personal can directly repair.
2. a kind of live detection method for distribution cable shelf depreciation according to claim 1, it is characterised in that: institute
Stating for distribution cable shelf depreciation electrification detection system includes control centre, signal acquisition unit, data comparing unit and inspection
Unit is surveyed, the output end of the signal acquisition unit and the input terminal of data comparing unit are electrically connected, and data are more single
The output end of member and the input terminal of feedback unit are electrically connected, the output end of the feedback unit and the input terminal electricity of control centre
Property connection, and the input terminal of the output end of control centre and data comparing unit is electrically connected, the control centre and detection
Unit realization is bi-directionally connected.
3. a kind of live detection method for distribution cable shelf depreciation according to claim 2, it is characterised in that: institute
Stating signal acquisition unit includes current sensor, and current sensor is provided with N number of, and the data comparing unit includes data
Comparator, and data comparator be provided with it is N number of.
4. a kind of live detection method for distribution cable shelf depreciation according to claim 2, it is characterised in that: institute
Stating detection unit includes processing center, and the input terminal of the processing center electrically connects with the output end of discharge frequency detection module
It connects, and the output end of the input terminal of processing center and discharge time detection module is electrically connected, the output of the processing center
End and the input terminal of region of discharge analysis module are electrically connected, and the output end of region of discharge analysis module and discharge position are true
The input terminal for recognizing module is electrically connected, and the output end of the discharge position confirmation module and the input terminal of processing center electrically connect
It connects, the processing center is bi-directionally connected with wireless communication module realization.
5. a kind of live detection method for distribution cable shelf depreciation according to claim 2, it is characterised in that: institute
The output end of the input terminal and signal immunity module of stating signal acquisition unit is electrically connected, and control centre and the big number of networking
It realizes and is bi-directionally connected according to library, the input terminal of the control centre and the output end of key are electrically connected, and the input terminal of key
It is electrically connected with the output end of power module, the output end of the power module and the input terminal of signal acquisition unit electrically connect
It connects.
6. a kind of live detection method for distribution cable shelf depreciation according to claim 1, it is characterised in that: institute
The output end of the input terminal and safety detection module of stating control centre is electrically connected, and control centre and wireless signal receive and dispatch mould
Block realization is bi-directionally connected, and the control centre is bi-directionally connected with the realization of local discharge signal pre-filtering module, and control centre
It is bi-directionally connected with signal processing module realization, the wireless signal transceiver module is bi-directionally connected with monitoring center realization.
7. a kind of live detection method for distribution cable shelf depreciation according to claim 6, it is characterised in that: institute
Stating monitoring center includes central computer, and the central computer is bi-directionally connected with radio receiving transmitting module realization, and middle scheming
The input terminal of the output end of calculation machine and display module is electrically connected, the output end of the central computer and wireless transport module
Input terminal is electrically connected, and the input terminal of the output end of wireless transport module and mobile terminal is electrically connected.
8. a kind of live detection method for distribution cable shelf depreciation according to claim 1, it is characterised in that: institute
The input terminal of the output end and alarm unit of stating control centre is electrically connected, and the alarm unit includes voice announcer and instruction
Lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557354.9A CN110196380A (en) | 2019-06-25 | 2019-06-25 | A kind of live detection method for distribution cable shelf depreciation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557354.9A CN110196380A (en) | 2019-06-25 | 2019-06-25 | A kind of live detection method for distribution cable shelf depreciation |
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| CN110196380A true CN110196380A (en) | 2019-09-03 |
Family
ID=67755199
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| CN201910557354.9A Withdrawn CN110196380A (en) | 2019-06-25 | 2019-06-25 | A kind of live detection method for distribution cable shelf depreciation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014627A (en) * | 2020-08-28 | 2020-12-01 | 陕西斯达防爆安全科技股份有限公司 | Feed detection device with strength feedback and working method |
| CN112485623A (en) * | 2020-12-16 | 2021-03-12 | 南方电网电力科技股份有限公司 | Multi-path accidental transient partial discharge rapid detection device |
| CN112630585A (en) * | 2020-11-06 | 2021-04-09 | 国网山东省电力公司济宁供电公司 | Distribution cable partial discharge live detection system and detection method |
| CN113759224A (en) * | 2021-11-08 | 2021-12-07 | 广东电网有限责任公司惠州供电局 | Cable terminal head discharge sensing measurement and control circuit, device and cable distribution box |
| CN117970061A (en) * | 2024-04-02 | 2024-05-03 | 山东泰开电力电子有限公司 | High-voltage power capacitor fault early warning method and system |
-
2019
- 2019-06-25 CN CN201910557354.9A patent/CN110196380A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014627A (en) * | 2020-08-28 | 2020-12-01 | 陕西斯达防爆安全科技股份有限公司 | Feed detection device with strength feedback and working method |
| CN112014627B (en) * | 2020-08-28 | 2023-06-20 | 陕西斯达防爆安全科技股份有限公司 | Feed detection device with strength feedback and working method |
| CN112630585A (en) * | 2020-11-06 | 2021-04-09 | 国网山东省电力公司济宁供电公司 | Distribution cable partial discharge live detection system and detection method |
| CN112485623A (en) * | 2020-12-16 | 2021-03-12 | 南方电网电力科技股份有限公司 | Multi-path accidental transient partial discharge rapid detection device |
| CN112485623B (en) * | 2020-12-16 | 2021-08-13 | 南方电网电力科技股份有限公司 | Multi-path accidental transient partial discharge rapid detection device |
| CN113759224A (en) * | 2021-11-08 | 2021-12-07 | 广东电网有限责任公司惠州供电局 | Cable terminal head discharge sensing measurement and control circuit, device and cable distribution box |
| CN113759224B (en) * | 2021-11-08 | 2022-03-22 | 广东电网有限责任公司惠州供电局 | Cable terminal head discharge sensing measurement and control circuit, device and cable distribution box |
| CN117970061A (en) * | 2024-04-02 | 2024-05-03 | 山东泰开电力电子有限公司 | High-voltage power capacitor fault early warning method and system |
| CN117970061B (en) * | 2024-04-02 | 2024-06-11 | 山东泰开电力电子有限公司 | High-voltage power capacitor fault early warning method and system |
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Application publication date: 20190903 |