CN106680672A - Portable switchgear partial discharge patrol detection system - Google Patents
Portable switchgear partial discharge patrol detection system Download PDFInfo
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- CN106680672A CN106680672A CN201510758407.5A CN201510758407A CN106680672A CN 106680672 A CN106680672 A CN 106680672A CN 201510758407 A CN201510758407 A CN 201510758407A CN 106680672 A CN106680672 A CN 106680672A
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Abstract
The invention relates to a portable switchgear partial discharge patrol detection system, which comprises a signal acquisition unit and a data processing unit. The signal acquisition unit comprises a plurality of partial discharge state signal acquisition instruments, and has the capability of signal acquisition, single-machine patrol detection and providing a simple on-site decision basis. The data processing unit comprises function modules of data extraction, data analysis and classification and separation and the like according to fault types. The portable switchgear partial discharge patrol detection system is characterized in that, through internet-of-thing technology, embedded technology and data mining technology, the system provides an overall plan for equipment state detection for operation and maintenance staffs; through bluetooth technology, signal acquisition units based on different partial discharge detection technologies and the data processing unit are networked for data transmission; and the data processing unit collects data of each acquisition unit and transmits the data to a regional server through WIFI. The system provides a more macroscopic and comprehensive decision basis, helps operation personnel to find equipment in an abnormal operating condition in time and prevents occurrence of major accidents.
Description
Technical field
The present invention relates to a kind of portable partial discharge of switchgear cruising inspection system based on technology of Internet of things, embedded technology and data mining technology.It is suitable
Scene for switch cubicle insulation defect is patrolled and examined.
Background technology
The raising that the needs and user developed with reformation of electric power system are required power supply reliability, high-tension apparatus reliability of operation is received increasingly
High attention, but the Insulation Problems in distribution mesohigh equipment also more and more project, and have had a strong impact on the raising of power supply reliability.
Middle-high voltage switch is one of capital equipment in power matching network system, and the quality of the state of insulation of switch cubicle directly influences the peace of electric power system
Full property and reliability, if there is electric power accident, can also cause huge economic loss.Shelf depreciation is the main ginseng for characterizing Electric Power Equipment Insulation state
One of number, correlative study shows, detects that shelf depreciation can effectively assess the state of insulation of switch cubicle, it is to avoid the generation of electric power accident, and can be with reference to office
Portion's discharge data provides rational maintenance suggestion.
For the Partial Discharge Detecting Technology of intrusive mood, due to non-intrusion type Partial Discharge Detecting Technology to switch cabinet structure and electrical network without invading
Enter, do not affect the normal operation of switch cubicle during the patrolling and examining of shelf depreciation is carried out and be widely popularized both at home and abroad.At present, both at home and abroad for switch
The Noninvasive testing technology of cabinet shelf depreciation mainly includes：Ultrasonic Detection Method, electric wave detection method, high frequency electric detection method and ultra-high-frequency detection
Method etc..
At present the Partial Discharge Detecting Technology of more conventional non-intrusion type is provided with itself exclusive characteristic and advantage, and such as some technologies are difficult to know to ask
When topic is occurring, and some technologies continue for the time how long when being difficult to know that problem occurs every time, when some technologies are difficult to know that problem occurs
Intensity and seriousness, some technologies are difficult to search problem part and position is located, and some technologies are difficult to search what is produced because of machinery or Overheat Reasons
Failure, some technologies are difficult to find and recognize multiple simultaneous failures etc..Therefore in order to draw it is more scientific more accurately overhaul suggestion need badly by
The shelf depreciation technology of various conventional non-intrusion types carries out systematic integration.
Research shows that the ground electric wave introduced in the management of recent year power distribution network, ultrasound involve high frequency electric detection technique, has opened power distribution network insulation inspection
The new page that New technical use is safeguarded in daily tour is surveyed, phasic results are progressively achieved.With the development of domestic electric network informationization work in recent years
And the production domesticization of related advanced sensors, need badly the operation maintenance work standardization of power distribution network and systematization, so as to improve the efficiency of work comprehensively,
Continuous intensive work is avoided, electrical network, personnel safety is lifted；O＆M resource utilization is lifted, O＆M cost is reduced.
The shelf depreciation of domestic switch cubicle more universal at present patrols and examines process, and mainly testing staff is based on single shelf depreciation by field assay
The detecting instrument of detection technique is detected when secondary data of patrolling and examining are with the presence or absence of electric discharge phenomena.This kind equipment all simply possesses general ability of patrolling and examining, right
Reductive analysis can not be carried out in the data that obtain are patrolled and examined, therefore, testing staff can only enter according to the data for detecting at that time to the running status of switch cubicle
Row judges, it is impossible to judge whether equipment changes on the whole, it is impossible to provide the more careful clearly criterion with the presence or absence of problem with regard to switch cubicle.
Such testing equipment only has signal gathering unit, and does not possess data storage capacities, with less data are analyzed with comprehensive energy
Power.On the other hand, the detectability of this kind equipment and the subjective initiative of operating personnel are closely bound up, and the experienced degree of testing staff can be direct
Last resolution is affected, there is the hidden danger of erroneous judgement.
The content of the invention
It is an object of the invention to overcome existing technical disadvantages, there is provided a kind of portable partial discharge of switchgear cruising inspection system, it adopts the connection of bluetooth
Connect mode to carry out data transmission each signal gathering unit based on different Partial Discharge Detecting Technologies with data processing unit networking, data processing list
The data of each collecting unit of unit's collection statistics simultaneously will form big data by WIFI modes on data uniform transmission to region server, there is provided more macroscopical,
Comprehensively decision-making foundation, helps operation maintenance personnel to find the equipment in abnormal operating condition in time, prevents the generation of major accident.
According to the technical problem to be solved, there is provided a kind of portable partial discharge of switchgear cruising inspection system, the exhausted of switch cubicle is mainly used in
Edge status checkout, it is characterised in that it mainly includes signal gathering unit and the big module of data processing unit two, wherein signal gathering unit includes ultrasound
Ripple signal gathering unit, electric wave signal collecting unit, high-frequency current signal collecting unit, ambient signal collecting unit, wherein the ultrasonic wave letter
Number collecting unit includes ultrasonic signal sensor, and described ground electric wave signal collecting unit is including capacitively electric wave signal sensor, the high-frequency electrical
Stream signal gathering unit includes high-frequency current signal sensor, and the ambient signal collecting unit includes environment humidity sensor, signal gathering unit
Also include shell, Signal Pretreatment unit, analog-to-digital conversion module, flush bonding processor, extend out storage card, bluetooth communication, color liquid crystal show
Display screen, control button, low ripple power module, patrol and examine auxiliary accessory；Data processing unit includes wireless communication module, flush bonding processor, number
According to storage medium and man-machine interaction unit；Input of the output end of signal gathering unit by way of Bluetooth wireless data transmission with data processing unit
End connection；The data processing unit receives the signal that each signal gathering unit transmits and further processes, including data are extracted, and data are gone through
History trend analysis, Time-frequency Analysis, phase analysis and extraction characteristic parameter carry out taxonomic revision according to fault type, then by the number for receiving
According to carrying out macroscopic view, comprehensive data analysis and generating knowledge base by forming big data in WIFI or 3G/4G network transmissions to region server, make
Go out maintenance policy and comprise determining whether shelf depreciation and discharge severity.
The corresponding signal transducer of the above-mentioned different types of signal gathering unit of the present invention is connected with Signal Pretreatment unit, Signal Pretreatment unit and mould
Number modular converters connection, sensor, Signal Pretreatment unit, analog-to-digital conversion module, extends out storage card, bluetooth communication, display screen and control
Button processed is connected with flush bonding processor, and low ripple power module is that the circuit of whole signal gathering unit is powered, and patrols and examines auxiliary accessory for aiding in
The different situation on the spot in scene carries out data acquisition.
Auxiliary accessory of patrolling and examining of the present invention extends the poly- ripple device probe of probe, ultrasonic signal and patrols and examines knapsack including signals collecting, wherein patrolling and examining
Knapsack is that the layback chain design of front back of the body formula can load each signal gathering unit and data processing unit, multi-signal collecting unit during conveniently patrolling and examining
Carry and patrol and examine operation.
Signal Pretreatment unit of the present invention is responsible for carrying out differential amplification, filtering to the signal that collects, signal is followed and analog-to-digital conversion, is embedding
Enter formula processor and cleaner local discharge signal is provided, save processor operation resource, improve the accuracy rate of signals collecting.
The storage card that extends out of the present invention is responsible for carrying out data storage when signal gathering unit works in single cpu mode, is easy to Field Force to patrolling and examining number
According to being played back, analyzed.And USB line can be passed through by the test data derivation in storage card, it is easy to follow-up access.
Low ripple power module of the present invention adopts rechargeable battery as power input, through high efficiency switch power module and low ripple
DC-DC module produces signal gathering unit work required voltage, while having the fully powered-off function of shutdown, reduces the power consumption of signal gathering unit.
Flush bonding processor in data processing module of the present invention is mainly responsible for further processing signal, including form data input,
Data are extracted, switch cubicle state of insulation judges.
Form data input of the present invention includes tested switch cubicle information, is input into, is patrolled and examined by RFID technique (REID)
Implementation date, inspection device account information, ambient temperature and humidity, environmental background noise, switch cubicle situation record, the switch cubicle layout switched in room are put down
Face figure, the switch cubicle record case is busbar, breaker, cable and other electric equipments positions.
Switch cubicle state of insulation of the present invention judges to refer to that the data to every kind of Partial discharge signal carry out historical variations trend analysis, with the time as reference
The different local discharge signal data of statistics are overlapped comparative analysis, and the local discharge signal to collecting carries out Fourier transform and carries out time-frequency characteristics
Analysis, putting phase distribution figure as phase reference drafting office using the phase place of 220V power-frequency voltages carries out phase analysis, according to switch cubicle in switch room
Layout floor plan drafting partial discharge quantity distribution map carries out office and puts energy spectrometer, according to above-mentioned analysis result position-sensing switch cabinet state of insulation abnormity point, and
Provide the Exception Type suggestion of state of insulation abnormity point.
The partial discharge of switchgear of the present invention is patrolled and examined operation principle and is：Patrol and examine the signals collecting list for requiring to select to need according to partial discharge of switchgear first
Unit carries out signals collecting, and the signal after collection is transformed into after electric signal via signal transducer and follows process through differential amplification, filtering, signal, by
Analog-to-digital conversion module is converted into the data signal that flush bonding processor can read and is quantified by signal gathering unit, by the guarantor in operation signal collecting unit
Depositing button carries out data preservation while data are transferred into patrolling and examining in list in data processing module by Bluetooth transmission mode；Complete to patrol and examine list
Fill in the analysis button in rear contact action data processing module, data processing module just the data in list are carried out data history trend analysis, when
Frequency signature analysis, phase analysis, extract characteristic parameter and carry out taxonomic revision according to fault type, generate signal spectrum figure, energy phase distribution map,
The comparative result figure of chart, different detection technique, and can a key generate report, comprehensive descision is carried out to the insulation defect of equipment, draw dimension
Repair decision-making.
The portable partial discharge of switchgear cruising inspection system of the present invention also includes various band switch cabinet signal gathering units, and can wirelessly be connected by bluetooth
The band switch cabinet signal gathering unit of the more different acquisition information sources of mode flexible expansion for connecing, including infrared image acquisition unit and ultrahigh-frequency signal adopt
Collection unit.
Each signal gathering unit of the present invention can work in single cpu mode, i.e., do not couple data processing unit, also can individually complete Daily Round Check task
In DATA REASONING and the requirement of record simultaneously can be to provide simple decision-making in-situ foundation as equipment under test state patrolling and examining scene.
Whether decision-making in-situ of the present invention exceedes the prompting of police circles' threshold value, power frequency supply according to the sizes values including partial discharge quantity, partial discharge quantity
The order of severity of discharge time and shelf depreciation in the cycle.
The portable partial discharge of switchgear cruising inspection system of the present invention, it is characterised in that data processing unit can be adopted by counting various signal gathering units
The data of collection, carry out historical trending analysis, superposition comparative analysis, Regional Distribution's statistical analysis, Time-frequency Analysis, phase analysis, energy spectrometer
And taxonomic revision is carried out according to equipment fault type, statistic analysis result makes equipment Maintenance Decision and generates report, can be the insulation of switch cubicle
State provide more comprehensively, more accurate and more intuitive decision assistant.
In addition, portable partial discharge of switchgear cruising inspection system disclosed by the invention, it is characterised in that data processing unit can be connected to by WIFI
Internet, and the data for detecting are uploaded to realize on the server specified data sharing；The weight of every kind of individual signals collecting unit is respectively less than
250g, can be directly fitted on switch cubicle using magnetic adsorption type design carries out signals collecting；Various signal gathering units and data processing unit are by certainly
The tailor-made knapsack of main design is integrated；It is described integrate knapsack can load all signal gathering units and data processing unit needed for patrol task and
Outer sensor and charger fittings, and can coordinate and complete patrol task.
Description of the drawings
Fig. 1 is portable partial discharge of switchgear cruising inspection system frame diagram
Specific embodiment
Referring to the drawings, will be described below now for the best mode embodiment of the present invention.
Fig. 1 shows a kind of portable partial discharge of switchgear cruising inspection system, including signal gathering unit and data processing unit, signal gathering unit
The multiple signal gathering units based on the non-embedded Partial Discharge Detecting Technology of different switch cubicles, including but be not limited only to ultrasonic signal collection
Unit, electric wave signal collecting unit, high-frequency current signal collecting unit and ambient signal collecting unit, different signal gathering units pass through phase
The sensor answered gathers corresponding local discharge signal, and the signal to receiving is pre-processed, including differential amplification, filtering, the signal of signal
Follow and analog-to-digital conversion, then the signal after digitlization is passed through into Bluetooth wireless transmission module transfer to data processing unit.Data processing unit connects
Receive the signal that each signal gathering unit transmits to further process, including data are extracted, data history trend analysis, Time-frequency Analysis,
Phase analysis and extraction characteristic parameter carry out taxonomic revision etc. according to fault type, then the data for receiving are passed through into WIFI or 3G/4G networks
Being transferred to formation big data in region server carries out macroscopic view, comprehensive data analysis and generates knowledge base, makes maintenance policy and has comprised determining whether
Shelf depreciation and discharge severity, help operation maintenance personnel to find the equipment in abnormal operating condition in time, prevent the generation of major accident.
Wherein signal gathering unit includes shell, signal transducer, Signal Pretreatment unit, analog-to-digital conversion module, flush bonding processor, extends out and deposit
Card storage, bluetooth communication, chromatic liquid crystal screen, control button, low ripple power module, patrol and examine auxiliary accessory.Signal transducer and signal
Pretreatment unit connects, and Signal Pretreatment unit is connected with analog-to-digital conversion module, signal transducer, Signal Pretreatment unit, analog-to-digital conversion module,
Extend out storage card, bluetooth communication, display screen and control button to be connected with flush bonding processor, low ripple power module is adopted for whole signal
The circuit of collection unit is powered, and the situation on the spot for patrolling and examining auxiliary accessory for aiding in scene different carries out data acquisition.In addition, data processing unit includes
Bluetooth communication, flush bonding processor, WIFI or 3G/4G modules, color liquid crystal touch screen, 3 modules of flush bonding processor and other are connected,
Carry out data processing and result shows.It is a feature of the present invention that being correlation using technology of Internet of things, embedded technology and data mining technology
Operation maintenance personnel provides the overall plan of a set of equipment state-detection, and using the connecting mode of bluetooth each letter of different Partial Discharge Detecting Technologies will be based on
Number collecting unit carries out data transmission with data processing unit networking, data of each collecting unit of data processing unit collection statistics and by WIFI side
Formula will form big data on data uniform transmission to region server, there is provided more macroscopical, comprehensive decision-making foundation, help at operation maintenance personnel discovery in time
Equipment in abnormal operating condition, prevents the generation of major accident.
Described signal transducer includes ultrasonic signal sensor, capacitively electric wave signal sensor, high-frequency current signal sensor and environment
Temperature Humidity Sensor.
The Signal Pretreatment unit is responsible for carrying out differential amplification to the signal that collects, according to echo signal feature carry out signal filtering and signal with
With, cleaner local discharge signal is provided for flush bonding processor, processor operation resource is saved, improve the accuracy rate of signals collecting.
The storage card that extends out is responsible for carrying out data storage when signal gathering unit works in single cpu mode, is easy to Field Force to carry out to patrolling and examining data
Playback, analysis.And USB line can be passed through by the test data derivation in storage card, it is easy to follow-up access.
Described low ripple power module adopts rechargeable battery as power input, through high efficiency switch power module and low ripple DC-DC module
Signal gathering unit work required voltage is produced, while having the fully powered-off function of shutdown, the power consumption of signal gathering unit is reduced.
Described auxiliary accessory of patrolling and examining extends the poly- ripple device probe of probe, ultrasonic signal and patrols and examines knapsack etc. including signals collecting, wherein patrolling and examining knapsack
Make for special ordering, the layback chain design of front back of the body formula can load each signal gathering unit and data processing unit, multi-signal collection during conveniently patrolling and examining
The carrying of unit and patrol and examine operation.
Flush bonding processor in described data processing module is mainly responsible for further processing signal, including form data input, data are carried
Take, switch cubicle state of insulation judges.
Described form data input includes tested switch cubicle information, is input into by RFID technique (REID), patrols and examines enforcement day
Phase, inspection device account information, ambient temperature and humidity, environmental background noise, the switch cubicle situation record (essential electrical such as busbar, breaker, cable
Equipment position), the switch cubicle layout floor plan etc. in switch room.
Described switch cubicle state of insulation judges to refer to that the data to every kind of Partial discharge signal carry out historical variations trend analysis, super by reference statistical of the time
Acoustic Signal Acquisition unit, electric wave signal collecting unit, high-frequency current signal collecting unit, temperature-humidity signal collecting unit collection return local
Discharge signal data are overlapped comparative analysis, and local discharge signal data include that discharge time, shelf depreciation are tight in partial discharge quantity, power frequency period
Weight degree and humiture；Local discharge signal to collecting carries out Fourier transform and carries out Time-frequency Analysis, marks the frequency at maximum amplitude；
Drawing partial discharge quantity phase distribution figure as phase reference using the phase place of 220V power-frequency voltages carries out phase analysis；According to the cloth of switch cubicle in switch room
Office's outline draught partial discharge quantity distribution map carries out an innings exoergic amount distributional analysis, according to above-mentioned analysis result position-sensing switch cabinet state of insulation abnormity point,
And be given state of insulation abnormity point Exception Type suggestion.
The portable partial discharge of switchgear cruising inspection system is realized especially by following proposal, patrols and examines requirement according to partial discharge of switchgear first and select need
The signal gathering unit wanted carries out signals collecting.Echo signal is transformed into after electric signal through signal preemphasis, filters and whole via signal transducer
Shape process, is converted into the data signal that flush bonding processor can read and is quantified by signal gathering unit by analog-to-digital conversion module, is gathered by operation signal
The button that preserves in unit carries out data preservation while data are transferred into patrolling and examining in list in data processing module by Bluetooth transmission mode.Complete
The analysis button filled in rear contact action data processing module of list is patrolled and examined, data processing module just carries out data history and becomes to the data in list
Potential analysis, Time-frequency Analysis, phase analysis, extraction characteristic parameter carry out taxonomic revision according to fault type, generate signal spectrum figure, energy phase
Bit distribution figure, chart, comparative result figure of different detection technique etc., and can a key generate report, synthesis is carried out to the insulation defect of equipment
Judge, draw maintenance decision.
The invention has the beneficial effects as follows：The portable partial discharge of switchgear cruising inspection system small volume, it is lightweight be easy to carry, improve and high pressure set
Detection efficiency is patrolled and examined at standby scene, and data collecting card causes the present invention to possess data storage and data analysis integration capability with the application of microprocessor；Its
Secondary, the present invention is integrated with Non-inserted switch cabinet Partial Discharge Detecting Technology conventional at present, combines the detection advantage of various technologies to switch cubicle
State of insulation carries out more macroscopical, more fully analysis and judges.Make shelf depreciation patrol and examine result more objective, greatly reduce and patrol and examine analysis and judge to examining
The dependence of survey personnel's experience, more accurately prevents the generation of great electric power accident, further reduces the economic loss brought because of electric power accident.Finally,
The entire work flow that the present invention patrols and examines in electrical network is cured in a software form in system, and set of system is capable of achieving patrol task distribution, switch cubicle local
Electric discharge is patrolled and examined, switch cubicle state of insulation is analyzed and judged, report etc. generated, by the operation maintenance work standardization of power distribution network and systematization, so as to complete
Improve operating efficiency in face, it is to avoid continuous intensive work, lift electrical network, personnel safety；O＆M resource utilization is lifted, O＆M cost is reduced.
Claims (10)
1. a kind of portable partial discharge of switchgear cruising inspection system, the state of insulation for being mainly used in switch cubicle is patrolled and examined, it is characterised in that it is mainly wrapped
Include signal gathering unit and the big module of data processing unit two, wherein signal gathering unit include ultrasonic signal collecting unit, electric wave signal collection
Unit, high-frequency current signal collecting unit, ambient signal collecting unit, wherein the ultrasonic signal collecting unit includes ultrasonic signal sensor,
Described ground electric wave signal collecting unit includes capacitively electric wave signal sensor, and the high-frequency current signal collecting unit is passed including high-frequency current signal
Sensor, the ambient signal collecting unit includes environment humidity sensor, and signal gathering unit also includes shell, Signal Pretreatment unit, modulus
Modular converter, flush bonding processor, extend out storage card, bluetooth communication, chromatic liquid crystal screen, control button, low ripple power module,
Patrol and examine auxiliary accessory；Data processing unit includes wireless communication module, flush bonding processor, data storage medium and man-machine interaction unit；Signals collecting
The output end of unit is connected by way of Bluetooth wireless data transmission with the input of data processing unit；The data processing unit receives each signal
The signal that collecting unit is transmitted is further processed, including data are extracted, data history trend analysis, Time-frequency Analysis, phase analysis
And extraction characteristic parameter carries out taxonomic revision according to fault type, then the data for receiving are passed through into WIFI or 3G/4G network transmissions to region
On server formed big data carry out macroscopic view, comprehensive data analysis and generate knowledge base, make maintenance policy comprised determining whether shelf depreciation with
And discharge severity.
2. portable partial discharge of switchgear cruising inspection system according to claim 1, above-mentioned different types of signal gathering unit is believed accordingly
Number sensor is connected with Signal Pretreatment unit, and Signal Pretreatment unit is connected with analog-to-digital conversion module, sensor, Signal Pretreatment unit, modulus
Modular converter, extend out storage card, bluetooth communication, display screen and control button and be connected with flush bonding processor, low ripple power module is
The circuit of whole signal gathering unit is powered, and the situation on the spot for patrolling and examining auxiliary accessory for aiding in scene different carries out data acquisition.
3. portable partial discharge of switchgear cruising inspection system according to claim 2, described auxiliary accessory of patrolling and examining extends including signals collecting
Probe, ultrasonic signal poly- ripple device probe and knapsack is patrolled and examined, wherein patrolling and examining the layback chain design that knapsack is front back of the body formula can load each signal gathering unit
And data processing unit, the carrying of multi-signal collecting unit and patrol and examine operation during conveniently patrolling and examining.
4. portable partial discharge of switchgear cruising inspection system according to claim 1, the Signal Pretreatment unit is responsible for the letter to collecting
Number carry out differential amplification, filtering, signal to follow and analog-to-digital conversion, for flush bonding processor cleaner local discharge signal is provided, saving is processed
Device runs resource, improves the accuracy rate of signals collecting.
The storage card that extends out is responsible for carrying out data storage when signal gathering unit works in single cpu mode, is easy to Field Force to carry out to patrolling and examining data
Playback, analysis.And USB line can be passed through by the test data derivation in storage card, it is easy to follow-up access.
Described low ripple power module adopts rechargeable battery as power input, through high efficiency switch power module and low ripple DC-DC module
Signal gathering unit work required voltage is produced, while having the fully powered-off function of shutdown, the power consumption of signal gathering unit is reduced.
5. portable partial discharge of switchgear cruising inspection system according to claim 1, the flush bonding processor in described data processing module
It is main to be responsible for further processing signal, including form data input, data are extracted, switch cubicle state of insulation judges.
Described form data input includes tested switch cubicle information, is input into by RFID technique (REID), patrols and examines enforcement day
Phase, inspection device account information, ambient temperature and humidity, environmental background noise, switch cubicle situation record, the switch cubicle layout floor plan switched in room,
The switch cubicle record case is busbar, breaker, cable and other electric equipments positions.
Described switch cubicle state of insulation judges to refer to that the data to every kind of Partial discharge signal carry out historical variations trend analysis, with the time as reference statistical not
Same local discharge signal data are overlapped comparative analysis, and the local discharge signal to collecting carries out Fourier transform and carries out Time-frequency Analysis,
Putting phase distribution figure as phase reference drafting office using the phase place of 220V power-frequency voltages carries out phase analysis, is put down according to the layout of switch cubicle in switch room
Face figure drafting partial discharge quantity distribution map carries out office and puts energy spectrometer, according to above-mentioned analysis result position-sensing switch cabinet state of insulation abnormity point, and is given absolutely
The Exception Type suggestion of edge abnormal state point.
6. the portable partial discharge of switchgear cruising inspection system according to any one of claim 1-5, it is characterised in that：First according to switch cubicle
Shelf depreciation is patrolled and examined and requires to select the signal gathering unit for needing to carry out signals collecting, and the signal after collection is transformed into after electric signal via signal transducer
Process is followed through differential amplification, filtering, signal, data signal that flush bonding processor can read is converted into by signals collecting by analog-to-digital conversion module
Unit quantifies, and carries out data by the preservation button in operation signal collecting unit and preserves while data are transferred at data by Bluetooth transmission mode
Patrolling and examining in list in reason module；The analysis button filled in rear contact action data processing module for patrolling and examining list is completed, data processing module is just right
Data in list carry out data history trend analysis, Time-frequency Analysis, phase analysis, extract characteristic parameter according to fault type carry out classification point
From, generate signal spectrum figure, energy phase distribution map, chart, the comparative result figure of different detection technique, and can a key generate report,
Comprehensive descision is carried out to the insulation defect of equipment, maintenance decision is drawn.
7. portable partial discharge of switchgear cruising inspection system according to claim 1, it is characterised in that possess various band switch cabinet signals and adopt
Collection unit, and can by way of bluetooth wirelessly connects the more different acquisition information sources of flexible expansion band switch cabinet signal gathering unit, it is including infrared
Image acquisition units and ultrahigh-frequency signal collecting unit.
8. portable partial discharge of switchgear cruising inspection system according to claim 1, it is characterised in that each signal gathering unit can be worked in
Single cpu mode, i.e., do not couple data processing unit, also can individually complete the requirement of DATA REASONING in Daily Round Check task and record and meanwhile can with
The scene patrolled and examined provides simple decision-making in-situ foundation for equipment under test state.
Whether described decision-making in-situ is according to the sizes values including partial discharge quantity, partial discharge quantity more than the prompting of police circles' threshold value, in the power frequency supply cycle
Discharge time and shelf depreciation the order of severity.
9. portable partial discharge of switchgear cruising inspection system according to claim 1, it is characterised in that data processing unit can be each by statistics
The data of signal gathering unit collection are planted, historical trending analysis, superposition comparative analysis, Regional Distribution's statistical analysis, Time-frequency Analysis, phase is carried out
Position analysis, energy spectrometer and taxonomic revision is carried out according to equipment fault type, statistic analysis result makes equipment Maintenance Decision and generates report, energy
State of insulation enough for switch cubicle provide more comprehensively, more accurate and more intuitive decision assistant.
10. portable partial discharge of switchgear cruising inspection system according to claim 1, it is characterised in that data processing unit can pass through WIFI
Internet is connected to, and the data for detecting is uploaded to realize on the server specified data sharing；The weight of every kind of individual signals collecting unit is equal
Less than 250g, can be directly fitted on switch cubicle using magnetic adsorption type design carries out signals collecting；Various signal gathering units and data processing unit are logical
Cross the tailor-made knapsack of autonomous Design to be integrated；The integration knapsack can load all signal gathering units and the data processing unit needed for patrol task
And outer sensor and charger fittings, and can coordinate and complete patrol task.
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| CN201510758407.5A CN106680672A (en) | 2015-11-05 | 2015-11-05 | Portable switchgear partial discharge patrol detection system |
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Cited By (12)
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| CN107367671A (en) * | 2017-06-29 | 2017-11-21 | 国网辽宁省电力有限公司电力科学研究院 | GIS partial discharge live detection and data management platform based on Internet of Things mark |
| CN107367672A (en) * | 2017-07-20 | 2017-11-21 | 国网江西省电力公司电力科学研究院 | High-tension switch cabinet Full-automatic belt electro-detection method and device |
| CN108120907A (en) * | 2018-01-10 | 2018-06-05 | 清华大学 | The partial discharge diagnostic method of feature extraction under a kind of tremendously low frequency voltage based on power frequency |
| CN108680843A (en) * | 2018-08-21 | 2018-10-19 | 广西电网有限责任公司电力科学研究院 | A kind of method for detection of partial discharge of switch cabinet based on Radio Transmission Technology |
| CN108957190A (en) * | 2018-09-21 | 2018-12-07 | 国网湖北省电力公司咸宁供电公司 | A kind of electrical test standardization job on-the-spot system and operation method |
| CN109066425A (en) * | 2018-09-26 | 2018-12-21 | 国网山东省电力公司海阳市供电公司 | Electric power overhaul system and repair method |
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| CN109374061A (en) * | 2018-11-30 | 2019-02-22 | 国网上海市电力公司 | A kind of switch cabinet electrified detection mobile job-oriented terminal |
| CN109406972A (en) * | 2018-12-12 | 2019-03-01 | 云南电网有限责任公司电力科学研究院 | A kind of switchgear state of insulation combined monitoring method |
| CN110554285A (en) * | 2019-09-02 | 2019-12-10 | 中铁工程设计咨询集团有限公司 | self-adaptive environmental noise suppression partial discharge monitoring method |
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| CN111024156A (en) * | 2019-12-17 | 2020-04-17 | 国网上海市电力公司 | Multi-sensor integrated monitoring device for GIS information acquisition |
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