CN206311708U - On-line monitoring of cable device and its system - Google Patents
On-line monitoring of cable device and its system Download PDFInfo
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- CN206311708U CN206311708U CN201720005935.8U CN201720005935U CN206311708U CN 206311708 U CN206311708 U CN 206311708U CN 201720005935 U CN201720005935 U CN 201720005935U CN 206311708 U CN206311708 U CN 206311708U
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- cable
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Abstract
The utility model provides a kind of on-line monitoring of cable device and its system, is related to electrical equipment technical field, including：Data acquisition mechanism, treatment reading mechanism and fault detection mechanism；Data acquisition mechanism includes multiple temperature sensors with multiple local discharge sensors；Temperature readout device in treatment reading mechanism is read out to the operation information for being tested cable, waveform display equipment carries out waveform processing to real-time discharge data, and the shelf depreciation point location for being tested cable is obtained by tools interfaces, digital independent equipment reads the shelf depreciation information of tested cable；Fault detection mechanism combination operation information, shelf depreciation information and shelf depreciation point location, judge the position of the insulation status, shelf depreciation situation and partial discharges fault point of tested cable.Comprehensive real-time detection can be carried out to cable, the accuracy of diagnostic result is improved, solves to be unable to the technical problem of full working scope Comprehensive affirming failure situation present in prior art.
Description
Technical field
The utility model is related to electrical equipment technical field, more particularly, to a kind of on-line monitoring of cable device and its is
System.
Background technology
Cable is made up of the conductor and outsourcing insulating protective layer of one or more mutually insulated, by electric power or information from one
Place is transferred to the wire at another place, and cable is typically by several or several groups of similar ropes of wire stranding, every group of wire it
Between mutually insulated, and be often twisted into around a center, whole outside is surrounded by the coating of high-insulation, and cable has interior logical
Electricity, the feature of external insulation.
The quality of cable insulation is the key factor for influenceing cable safe and reliable operation, in the actual moving process of cable
It was found that, most of cable fault causes because cable insulation occurs deterioration, with the development of supply of electric power, by cable
On-line real-time measuremen is carried out, cable can timely be safeguarded, overhauled and changed, to ensureing that cable reliability service has
Important meaning.
But, the cable monitoring device in currently available technology, the real-time detection to cable is not comprehensive enough, therefore diagnosis knot
The accuracy of fruit is not high, it is impossible to which full working scope Comprehensive affirming failure situation is meeting the detection of electric power and industrial and mining enterprises to cable insulation
It is required that.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of on-line monitoring of cable device and its system, with to electricity
Cable carries out comprehensive real-time detection, improves the accuracy of diagnostic result, solves to be unable to full working scope synthesis present in prior art
Confirm the technical problem of failure situation.
In a first aspect, the utility model embodiment provides a kind of on-line monitoring of cable device, including：Data gather computer
Structure, treatment reading mechanism and fault detection mechanism；
Data acquisition mechanism includes multiple temperature sensors with multiple local discharge sensors；
The real time temperature information of multiple tested cables of temperature sensor collection；
The real-time discharge data of multiple tested cables of local discharge sensor collection；
Treatment reading mechanism includes：Temperature readout device, waveform display equipment, data processing equipment and digital independent set
It is standby；
Temperature readout device is read out according to real time temperature information to the operation information for being tested cable；
Waveform display equipment carries out waveform processing to real-time discharge data, and the office of tested cable is obtained by tools interfaces
Discharge point location in portion；
Data processing equipment is collected and filtering process to real-time discharge data；
Digital independent equipment reads the shelf depreciation information of tested cable according to the discharge data for processing after filtering；
Fault detection mechanism combination operation information, shelf depreciation information and shelf depreciation point location, judge tested cable
The position of insulation status, shelf depreciation situation and partial discharges fault point.
With reference in a first aspect, the utility model embodiment provide first aspect the first possible implementation method, its
In, data processing equipment includes signal distributor box, capture card and industrial computer, and signal distributor box is by the voltage of real-time discharge data
To capture card, industrial computer transfers voltage signal to signal transmission from capture card, and treatment is filtered to voltage signal.
With reference in a first aspect, the utility model embodiment provide first aspect second possible implementation method, its
In, multiple local discharge sensors connect one to one with the ground wire of some tested cables, multiple local discharge sensors point
Signal distributor box is not connected by seven core cable, signal distributor box is connected by parallel interface with industrial computer, industrial computer is by outer
If component connection standard (Peripheral Component Interconnect, abbreviation PCI) interface is connected with capture card, work
Control machine is also connected with digital independent equipment.
With reference in a first aspect, the utility model embodiment provide first aspect the third possible implementation method, its
In, signal distributor box receives the differential voltage signal from multiple local discharge sensors, and each differential voltage signal is converted into
Corresponding single-ended voltage signal, and each single-ended voltage signal is transferred to capture card under the control of industrial computer.
With reference in a first aspect, the utility model embodiment provide first aspect the 4th kind of possible implementation method, its
In, each single-ended voltage signal that capture card will be received is converted into corresponding data signal, and is believed each numeral by pci interface
Number it is transferred to industrial computer.
With reference in a first aspect, the utility model embodiment provide first aspect the 5th kind of possible implementation method, its
In, industrial computer sends control signal, and transmits control signals to signal distributor box by parallel interface；Industrial computer is to from collection
After each data signal that clamping is received is read out treatment, corresponding signal characteristic value is extracted, and each signal characteristic value is transmitted
To digital independent equipment.
With reference in a first aspect, the utility model embodiment provide first aspect the 6th kind of possible implementation method, its
In, digital independent equipment is read out judgement to each signal characteristic value, extracts characteristic parameter, forms characteristic spectrum.
With reference in a first aspect, the utility model embodiment provide first aspect the 7th kind of possible implementation method, its
In, also including failure warning mechanism, failure warning mechanism includes source of early warning and warning device, in the judgement of fault detection mechanism
Result starts source of early warning when exceeding setting threshold value of warning, when the judged result of fault detection mechanism exceedes setting alarm threshold value
Start warning device.
With reference in a first aspect, the utility model embodiment provide first aspect the 8th kind of possible implementation method, its
In, also including data storage mechanism, data storage mechanism is by database stores data collecting mechanism, treatment reading mechanism, event
Data record in barrier testing agency and failure warning mechanism, history of forming data are for inquiring about and calling.
Second aspect, the utility model embodiment also provides a kind of on-line monitoring of cable system, including tested cable and
Such as the on-line monitoring of cable device of first aspect.
The utility model embodiment brings following beneficial effect：The on-line monitoring of cable that the utility model embodiment is provided
Device, including data acquisition mechanism, treatment reading mechanism and fault detection mechanism；Multiple TEMPs in data acquisition mechanism
The real time temperature information of the tested cable of device collection, the real-time discharge data of multiple tested cables of local discharge sensor collection；Place
Temperature readout device in reason reading mechanism is read out according to real time temperature information to the operation information for being tested cable；Waveform is read
Taking equipment carries out waveform processing to real-time discharge data, and the shelf depreciation point location of tested cable is obtained by tools interfaces；
Data processing equipment is collected and filtering process to real-time discharge data, and digital independent equipment is according to putting for processing after filtering
Electric data, read the shelf depreciation information of tested cable；By fault detection mechanism combination operation information, shelf depreciation information with
Shelf depreciation point location, judges the position of the insulation status, shelf depreciation situation and partial discharges fault point of tested cable, from
And full working scope on-line real-time measuremen diagnosis is carried out to cable, because comprehensive monitoring is integrated with the many-sides such as shelf depreciation, insulation, because
This can improve the accuracy of testing result, Comprehensive affirming failure situation in all directions be realized, to meet electric power and industrial and mining enterprises pair
The detection requirement of cable insulation.
Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are in explanation
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Coordinate appended accompanying drawing, be described in detail below.
Brief description of the drawings
In order to illustrate more clearly of the utility model specific embodiment or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some implementation methods of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation of the on-line monitoring of cable device that Fig. 1 is provided for the utility model embodiment；
Fig. 2 is the structural representation of the data processing equipment in the utility model embodiment；
Fig. 3 is the structural representation of the failure warning mechanism in the utility model embodiment；
The structural representation of the on-line monitoring of cable system that Fig. 4 is provided for the utility model embodiment.
Icon：1- on-line monitoring of cable devices；2- data acquisitions mechanism；3- processes reading mechanism；4- fault detection mechanisms；
21- temperature sensors；22- local discharge sensors；31- temperature readout devices；32- waveform display equipment；33- data processings set
It is standby；34- digital independent equipment；331- signal distributor boxes；332- capture cards；333- industrial computers；5- failure warnings mechanism；51- is pre-
Alert equipment；52- warning devices；6- on-line monitoring of cable systems；61- is tested cable.
Specific embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Example is applied, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to the scope of the utility model protection.
Cable monitoring device in currently available technology is not comprehensive enough to the real-time detection of cable, thus diagnostic result standard
True property is not high, it is impossible to full working scope Comprehensive affirming failure situation, and based on this, a kind of cable that the utility model embodiment is provided is online
Monitoring device and its system, can carry out comprehensive real-time detection to cable, improve the accuracy of diagnostic result, solve existing skill
The technical problem of full working scope Comprehensive affirming failure situation is unable to present in art.
For ease of understanding the present embodiment, a kind of cable disclosed in the utility model embodiment is supervised online first
Survey device and its system describes in detail.
Embodiment one：
As shown in figure 1, a kind of on-line monitoring of cable device 1 that the utility model embodiment is provided, including：Data gather computer
Structure 2, treatment reading mechanism 3 and fault detection mechanism 4.Data acquisition mechanism 2 includes multiple temperature sensors 21 with multiple offices
Portion's discharge sensor 22, the real time temperature information of the tested cable of the collection of multiple temperature sensors 21, multiple local discharge sensors
The real-time discharge data of the tested cable of 22 collections.Treatment reading mechanism 3 includes：Temperature readout device 31, waveform display equipment 32,
Data processing equipment 33 and digital independent equipment 34；Temperature readout device 31 according to real time temperature information to be tested cable fortune
Row information is read out；The real-time discharge data of waveform display equipment 32 pairs carries out waveform processing, and obtains quilt by tools interfaces
Survey the shelf depreciation point location of cable；The real-time discharge data of data processing equipment 33 pairs is collected and filtering process；Data are read
Taking equipment 34 reads the shelf depreciation information of tested cable according to the discharge data for processing after filtering.The knot of fault detection mechanism 4
Close operation information, shelf depreciation information and shelf depreciation point location, judge to be tested the insulation status of cable, shelf depreciation situation with
And the position of partial discharges fault point.
As shown in Fig. 2 data processing equipment 33 includes signal distributor box 331, capture card 332 and industrial computer 333：Signal
The voltage signal of real-time discharge data is transferred to capture card 332 by distributor box 331；Industrial computer 333 transfers electricity from capture card 332
Pressure signal, and treatment is filtered to voltage signal.
It is further that multiple local discharge sensors 22 connect one to one with the ground wire of some tested cables, many
Individual local discharge sensor 22 connects signal distributor box 331 by seven core cable respectively, and signal distributor box 331 passes through parallel interface
Be connected with industrial computer 333, industrial computer 333 is connected by pci interface with capture card 332, industrial computer 333 also with digital independent equipment
34 connections.
In the present embodiment, signal distributor box 331 receives the differential voltage signal from multiple local discharge sensors 22, will
Each differential voltage signal is converted into corresponding single-ended voltage signal, and by each single-ended voltage signal under the control of industrial computer 333
It is transferred to capture card 332.
Used as the preferred embodiment of the present embodiment, each single-ended voltage signal that capture card 332 will be received is converted into phase
The data signal answered, and by pci interface by each digital data transmission to industrial computer 333.
Industrial computer 333 in the utility model embodiment sends control signal, and is passed control signal by parallel interface
It is defeated to signal distributor box 331；After 333 pairs of each data signals received from capture card 332 of industrial computer are read out treatment, extract
Corresponding signal characteristic value, and each signal characteristic value is transferred to digital independent equipment 34.
Wherein, the filtering process that industrial computer 333 pairs is carried out again by the real-time voltage signal of bandpass filtering treatment, is base
Calculated in the Suppression of narrow band interference of the fast algorithm (Fast Fourier Transformation, abbreviation FFT) of discrete fourier transform
Method.Industrial computer 333 is carried out at the filtering of the denoising algorithm based on small echo to the real-time voltage signal by FFT filtering process again
Reason, the last real-time voltage signal again to being processed by wavelet filtering of industrial computer 333 carries out the filtering algorithm based on neutral net
Filtering process.
FFT is fast Fourier transform, is discrete fourier transform (Discrete Fourier Transform, abbreviation
DFT fast algorithm), it is the characteristic such as odd, even, empty, real according to discrete fourier transform, to the algorithm of DFT
It is improved acquisition.FFT is a kind of highly effective algorithm of DFT, referred to as FFT (fast Fourier
Transform), it is that the algorithm of DFT is carried out according to the characteristic such as odd, even, empty, real of discrete fourier transform
Improve and obtain, fft algorithm can be divided into decimation in time algorithm and decimation in frequency algorithm, and the general principle of FFT is from DFT fortune
Calculate what is started.
It should be noted that each signal characteristic value of digital independent equipment 34 pairs is read out judgement, characteristic parameter, shape are extracted
Into characteristic spectrum.Wherein, characteristic parameter includes threshold value, arrowband local discharge signal, maximum pd quantity, mean discharge magnitude, average
The discharge time occurred in discharge current, square rate, standardized discharge time and single power frequency period：Threshold value is effectively local
The lower limit of discharge pulse amplitude；Arrowband local discharge signal is the peak of Partial Discharge Data signal in certain narrowband frequency range
Value；Maximum pd quantity is the maximum of partial discharge pulse's amplitude in single power frequency period；Mean discharge magnitude is single power frequency week
The average value of Qi Nei partial discharge pulses amplitude；Average discharge current is the average current of flows through sensor end resistance；Square rate
It is the equal number formulary value of partial discharge pulse's amplitude.
For formed characteristic spectrum, including maximum pd quantity phase resolved plot, mean discharge magnitude phase resolved plot,
Discharge time phase resolved plot, electric discharge amplitude distribution collection of illustrative plates, discharge energy distribution collection of illustrative plates and three-dimensionalCollection of illustrative plates：It is maximum
Discharge capacity phase resolved plot represents the maximum pd quantity of each phase interval；Mean discharge magnitude phase resolved plot represents each
The mean discharge magnitude of phase interval；Discharge time phase resolved plot represents the discharge time of each phase interval；Electric discharge amplitude
Statistics of the distribution map spectral representation to the discharge time of different amplitudes；Electric discharge energy of the discharge energy distribution map spectral representation to different amplitudes
The statistics of amount；It is three-dimensionalThe relation that collection of illustrative plates comprehensively reflects between discharge capacity, discharge time and discharge phase.
Used as a preferred scheme, waveform display equipment 32 is carried out at waveform display analysis according to the discharge data of collection
Reason, while showing multiple passage waveforms, with waveform scaling, channel selecting, vernier display function, and can be entered by tools interfaces
Pedestrian's work waveform analysis, determines the position of cable self- recoverage trouble point.
As shown in figure 3, on-line monitoring of cable device 1 also includes failure warning mechanism 5, failure warning mechanism 5 includes early warning
Equipment 51 and warning device 52, source of early warning 51 is started when the judged result of fault detection mechanism 4 exceedes setting threshold value of warning,
Start warning device 52 when the judged result of fault detection mechanism 4 exceedes setting alarm threshold value.Source of early warning 51 includes early warning
Lamp, warning device 52 includes alarm lamp and buzzer siren.
Additionally, the on-line monitoring of cable device 1 that the utility model embodiment is provided also includes data storage mechanism, data are deposited
Storage mechanism is by database stores data collecting mechanism 2, treatment reading mechanism 3, fault detection mechanism 4 and failure warning mechanism
Data record in 5, history of forming data are for inquiring about and calling.
Embodiment two：
As shown in figure 4, a kind of on-line monitoring of cable system 6 that the utility model embodiment is provided, including tested cable 61
And the on-line monitoring of cable device that above-described embodiment one is provided.
Used as the preferred embodiment of the present embodiment, on-line monitoring of cable device 1 is connected to the mother of load and main transformer
On some tested cables 61 between line.
Existing cable monitoring system, the real-time detection to cable is not comprehensive enough, therefore the accuracy of diagnostic result is not high,
Full working scope Comprehensive affirming failure situation is unable to meet the detection requirement of electric power and industrial and mining enterprises to cable insulation.
In the present embodiment, increase multiple temperature sensors 21, temperature readout device 31, waveform display equipment 32 and failure
Testing agency 4, the real time temperature information of tested cable 61, the basis of temperature readout device 31 are gathered by multiple temperature sensors 21
Real time temperature information is read out to the operation information for being tested cable 61, and the real-time discharge data of waveform display equipment 32 pairs enters traveling wave
Shape treatment, and the shelf depreciation point location of tested cable 61 is obtained by tools interfaces, combined by fault detection mechanism 4 and run
Information, shelf depreciation information and shelf depreciation point location, judge insulation status, shelf depreciation situation and the office of tested cable 61
The position of portion's discharge fault point, so as to carry out full working scope on-line real-time measuremen diagnosis to tested cable 61, due to comprehensive monitoring collection
Into many-sides such as shelf depreciation, insulation, therefore, it is possible to improve the accuracy of testing result, Comprehensive affirming failure in all directions is realized
Situation.
The on-line monitoring of cable system that the utility model embodiment is provided, the on-line monitoring of cable provided with above-described embodiment
Device has identical technical characteristic, so can also solve identical technical problem, reaches identical technique effect.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or integratedly connect
Connect；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can
Being two connections of element internal.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
It is term " " center ", " on ", D score, "left", "right", " perpendicular, it is necessary to explanation in description of the present utility model
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " are, based on orientation shown in the drawings or position relationship, to be only
Described with simplified for the ease of description the utility model, must had rather than the device or element for indicating or implying meaning specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
Finally it should be noted that：Embodiment described above, specific embodiment only of the present utility model is used to illustrate this
The technical scheme of utility model, rather than its limitations, protection domain of the present utility model is not limited thereto, although with reference to foregoing
Embodiment has been described in detail to the utility model, it will be understood by those within the art that：It is any to be familiar with this skill
In the technical scope that the utility model is disclosed, it still can be to the skill described in previous embodiment for the technical staff in art field
Art scheme is modified or can readily occur in change, or carries out equivalent to which part technical characteristic；And these modifications,
Change is replaced, and does not make the spirit and model of essence disengaging the utility model embodiment technical scheme of appropriate technical solution
Enclose, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model described should be wanted with right
The protection domain asked is defined.
Claims (10)
1. a kind of on-line monitoring of cable device, it is characterised in that including：Data acquisition mechanism, treatment reading mechanism and failure
Testing agency；
The data acquisition mechanism includes multiple temperature sensors with multiple local discharge sensors；
The real time temperature information of the multiple tested cable of temperature sensor collection；
The multiple local discharge sensor gathers the real-time discharge data of the tested cable；
The treatment reading mechanism includes：Temperature readout device, waveform display equipment, data processing equipment and digital independent set
It is standby；
The temperature readout device is read out according to the real time temperature information to the operation information of the tested cable；
The waveform display equipment carries out waveform processing to the real-time discharge data, and obtains described tested by tools interfaces
The shelf depreciation point location of cable；
The data processing equipment is collected and filtering process to the real-time discharge data；
The digital independent equipment reads the shelf depreciation of the tested cable according to the discharge data by the filtering process
Information；
The fault detection mechanism combines the operation information, the shelf depreciation information and the shelf depreciation point location, sentences
The position of the insulation status, shelf depreciation situation and partial discharges fault point of the disconnected tested cable.
2. on-line monitoring of cable device according to claim 1, it is characterised in that the data processing equipment includes signal
Distributor box, capture card and industrial computer；
The voltage signal of the real-time discharge data is transferred to the capture card by the signal distributor box；
The industrial computer transfers the voltage signal from the capture card, and the voltage signal is carried out at the filtering
Reason.
3. on-line monitoring of cable device according to claim 2, it is characterised in that the multiple local discharge sensor with
The ground wire of some tested cables connects one to one；
The multiple local discharge sensor connects the signal distributor box by seven core cable respectively；
The signal distributor box is connected by parallel interface with the industrial computer；
The industrial computer is connected by pci interface with the capture card；
The industrial computer is also connected with the digital independent equipment.
4. on-line monitoring of cable device according to claim 3, it is characterised in that the signal distributor box is received and comes from institute
The differential voltage signal of multiple local discharge sensors is stated, each differential voltage signal is converted into corresponding single ended voltage letter
Number, and each single-ended voltage signal is transferred to the capture card under the control of the industrial computer.
5. on-line monitoring of cable device according to claim 4, it is characterised in that each institute that the capture card will be received
State single-ended voltage signal and be converted into corresponding data signal, and by the pci interface by each digital data transmission to institute
State industrial computer.
6. on-line monitoring of cable device according to claim 5, it is characterised in that the industrial computer sends control signal,
And the control signal is transferred to by the signal distributor box by the parallel interface；
After the industrial computer is read out treatment to each described data signal received from the capture card, corresponding letter is extracted
Number characteristic value, and each signal characteristic value is transferred to the digital independent equipment.
7. on-line monitoring of cable device according to claim 6, it is characterised in that the digital independent equipment is to each described
Signal characteristic value is read out judgement, extracts characteristic parameter, forms characteristic spectrum.
8. the on-line monitoring of cable device according to claim any one of 1-7, it is characterised in that also including failure warning machine
Structure, the failure warning mechanism includes source of early warning and warning device, exceedes in the judged result of the fault detection mechanism and sets
Determine to start the source of early warning during threshold value of warning, opened when the judged result of the fault detection mechanism exceedes setting alarm threshold value
Move the warning device.
9. on-line monitoring of cable device according to claim 8, it is characterised in that described also including data storage mechanism
Data storage mechanism stores the data acquisition mechanism, the treatment reading mechanism, the fault detection mechanism by database
And the data record in the failure warning mechanism, history of forming data are for inquiring about and calling.
10. a kind of on-line monitoring of cable system, it is characterised in that including tested cable and such as any one of claim 1-9 institute
The on-line monitoring of cable device stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720005935.8U CN206311708U (en) | 2017-01-04 | 2017-01-04 | On-line monitoring of cable device and its system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720005935.8U CN206311708U (en) | 2017-01-04 | 2017-01-04 | On-line monitoring of cable device and its system |
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| Publication Number | Publication Date |
|---|---|
| CN206311708U true CN206311708U (en) | 2017-07-07 |
Family
ID=59247799
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720005935.8U Expired - Fee Related CN206311708U (en) | 2017-01-04 | 2017-01-04 | On-line monitoring of cable device and its system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335468A (en) * | 2017-12-12 | 2018-07-27 | 中科（深圳）能源物联网有限公司 | A kind of cable monitoring system |
| CN109188059A (en) * | 2018-10-09 | 2019-01-11 | 国网河南省电力公司新密市供电公司 | A kind of step voltage detection method and device |
| CN111624445A (en) * | 2020-04-29 | 2020-09-04 | 珠海一多监测科技有限公司 | Partial discharge detection method and system based on infrared temperature measurement sensor |
| CN113030824A (en) * | 2021-03-03 | 2021-06-25 | 云南海力特电气自动化有限公司 | Integrated debugging device of online monitoring system of capacitive equipment of intelligent substation |
| CN114200251A (en) * | 2021-12-20 | 2022-03-18 | 云南德胜钢铁有限公司 | Power grid fault detection and early warning device |
| 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 |
-
2017
- 2017-01-04 CN CN201720005935.8U patent/CN206311708U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335468A (en) * | 2017-12-12 | 2018-07-27 | 中科（深圳）能源物联网有限公司 | A kind of cable monitoring system |
| CN109188059A (en) * | 2018-10-09 | 2019-01-11 | 国网河南省电力公司新密市供电公司 | A kind of step voltage detection method and device |
| CN109188059B (en) * | 2018-10-09 | 2023-09-05 | 国网河南省电力公司新密市供电公司 | Step voltage detection method and device |
| CN111624445A (en) * | 2020-04-29 | 2020-09-04 | 珠海一多监测科技有限公司 | Partial discharge detection method and system based on infrared temperature measurement sensor |
| CN111624445B (en) * | 2020-04-29 | 2023-06-09 | 珠海一多监测科技有限公司 | Partial discharge detection method and system based on infrared temperature sensor |
| CN113030824A (en) * | 2021-03-03 | 2021-06-25 | 云南海力特电气自动化有限公司 | Integrated debugging device of online monitoring system of capacitive equipment of intelligent substation |
| 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 |
| CN114200251A (en) * | 2021-12-20 | 2022-03-18 | 云南德胜钢铁有限公司 | Power grid fault detection and early warning device |
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