CN107478967A - Towards the 10KV cable local discharges on-line monitoring system and method for mobile fortune inspection - Google Patents
Towards the 10KV cable local discharges on-line monitoring system and method for mobile fortune inspection Download PDFInfo
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- CN107478967A CN107478967A CN201710656872.7A CN201710656872A CN107478967A CN 107478967 A CN107478967 A CN 107478967A CN 201710656872 A CN201710656872 A CN 201710656872A CN 107478967 A CN107478967 A CN 107478967A
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- cable
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- mobile fortune
- leakage current
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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)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention provides a kind of 10KV cable local discharges on-line monitoring system and method towards mobile fortune inspection,The system includes partial discharge monitoring module,GPS module,Stand room O＆M terminal,Wire/wireless communication private network and mobile fortune inspection server,By combining existing power distribution station room,The communication equipment and GPS module of ring main unit,Intelligent O＆M terminal containing cable assets information,Set up cable local discharge monitoring modular,Complete the standardization access of cable local discharge information,And standardized cable shelf depreciation information is uploaded into mobile fortune inspection server,The on-line real time monitoring of cable local discharge information is completed with this,The effectively mobile fortune check system of support,Solve the problems, such as to lack cable machinery status data and fault location information in existing power distribution network movement fortune check system rapid rush-repair and failure anticipation,Greatly reduce the cable fault maintenance time,And due to utilizing existing power distribution communication facility,Reduce the cost of independent communication facility construction.
Description
Technical field
The present invention relates to distribution O＆M to overhaul field, and particularly a kind of 10KV cable local discharges towards mobile fortune inspection exist
Line monitoring system and method.
Background technology
10KV cables are the crucial accessories of urban power distribution network, and underground is embedded in because it, under complicated urban pipe network background,
Location difficulty after cable breaks down, easily lose valuable emergency repair time.Under prior art, high-tension cable Fault Locating Method is
Relative maturity, method is various, but 10KV cable relatively high pressure cables, because its operational voltage level is different, partial discharge phenomenon
Also differ, therefore high-tension cable Fault Locating Method is applied in 10KV cables, only Part Methods can be applicable, example
Such as：Ultrasonic wave positioning mode, pulse current method and TRAVELING WAVE FAULT LOCATION etc., though the above method can determine that 10KV cable faults spy
Sign, but its detection instrument is isolated existing, or low-coat scale application can not be carried out by technology of Internet of things, therefore its
Distribution system can not be connected to, accomplishes to monitor on-line, application on site demand can not be met.
Particularly power distribution network O＆M overhauling company in order to improve overhaul efficiency and shorten fault handling time, has opened now
Begin to handle electronization maintenance work order using mobile fortune check system, therefore, urgent need one kind, which can network, carries out cable local discharge
The method of on-line monitoring, to ensure overhaul efficiency.
The content of the invention
It is an object of the invention to provide a kind of 10KV cable local discharges on-line monitoring system towards mobile fortune inspection and side
Method, it can realize the on-line real time monitoring of cable local discharge information, reduce the cable fault maintenance time.
To reach above-mentioned technical purpose, the invention provides a kind of 10KV cable local discharges towards mobile fortune inspection are online
Monitoring system, it includes partial discharge monitoring module, GPS module, stand room O＆M terminal, wire/wireless communication private network and shifting
Dynamic fortune inspection server, the partial discharge monitoring module, GPS module and station room O＆M terminal are configured the two of every section of cable
End, the mobile fortune inspection server configuration is in remote monitoring center；The partial discharge monitoring module at cable both ends is described
Under GPS module time service synchronous acquisition shelf depreciation information and be uploaded to it is described station room O＆M terminal, it is described station room O＆M terminal will
Failure cable information is uploaded to the mobile fortune inspection server；The partial discharge monitoring module with it is described station room O＆M terminal it
Between and the data between stood room O＆M terminal and the mobile fortune inspection server communicate by the wire/wireless communication
Private network is completed.
Preferably, the shelf depreciation information includes leakage current values and monitoring device numbering with timestamp.
Preferably, the failure cable information includes the shelf depreciation information and cable asset number.
Preferably, the station room O＆M terminal-pair cable local discharge carries out urgency level grading：
Calculate the average value of current cable Leakage Current value and cable Leakage Current storage history value；
When the average value is less than typical cable Leakage Current value, labeled as general；
When the average value is more than typical cable Leakage Current value, but is less than 3 times of typical cable Leakage Current values, mark
To be serious；
When the average value is more than 3 times of typical cable Leakage Current values, labeled as very serious.
Serious and very under menace level failure cable information is uploaded to remote mobile fortune inspection server；For mark
Shelf depreciation for general grade does not process.
Preferably, the mobile fortune inspection server calculates abort situation according to the failure cable information：
L be trouble point apart from first section distance, L is cable total length, t1For head end timestamp time, t2For end timestamp when
Between, v0For electromagnetic transmission speed.
Present invention also offers a kind of 10KV cable local discharge on-line monitoring methods towards mobile fortune inspection, including it is following
Step：
S101, the partial discharge monitoring module monitors Leakage Current at cable both ends, the synchronous acquisition office under GPS module time service
Portion's discharge information, it is uploaded to each station room O＆M terminal；
S102, the station room O＆M terminal at cable both ends complete urgency level grading according to shelf depreciation information, by event
Barrier cable information is uploaded to mobile fortune inspection server；
S103, the mobile fortune inspection server calculate partial discharge position according to the failure cable information；
The failure cable information and positional information are pushed to mobile fortune inspection eventually by S104, the mobile fortune inspection server
End.
Preferably, the shelf depreciation information includes leakage current values and monitoring device numbering with timestamp.
Preferably, the failure cable information includes the shelf depreciation information and cable asset number.
Preferably, the station room O＆M terminal-pair cable local discharge carries out urgency level grading：
Calculate the average value of current cable Leakage Current value and cable Leakage Current storage history value；
When the average value is less than typical cable Leakage Current value, labeled as general；
When the average value is more than typical cable Leakage Current value, but is less than 3 times of typical cable Leakage Current values, mark
To be serious；
When the average value is more than 3 times of typical cable Leakage Current values, labeled as very serious.
Serious and very under menace level failure cable information is uploaded to remote mobile fortune inspection server；For mark
Shelf depreciation for general grade does not process.
Preferably, the mobile fortune inspection server calculates abort situation according to the failure cable information：
L be trouble point apart from first section distance, L is cable total length, t1For head end timestamp time, t2For end timestamp when
Between, v0For electromagnetic transmission speed.
Compared with prior art, the present invention passes through the existing power distribution station room of combination, the communication equipment and GPS moulds of ring main unit
Block, the intelligent O＆M terminal containing cable assets information, set up cable local discharge monitoring modular, complete cable local discharge
The standardization access of information, and standardized cable shelf depreciation information is uploaded into mobile fortune inspection server, cable office is completed with this
The mobile fortune check system of the on-line real time monitoring of portion's discharge information, effectively support, it is fast to solve existing power distribution network movement fortune check system
The problem of lacking cable machinery status data and fault location information in speed repairing and failure anticipation, greatly reduce cable fault
Repair time, and due to utilizing existing power distribution communication facility, reduce the cost of independent communication facility construction.
Brief description of the drawings
Fig. 1 is a kind of 10KV cable local discharges on-line monitoring towards mobile fortune inspection provided in the embodiment of the present invention
System architecture diagram；
Fig. 2 is a kind of 10KV cable local discharges on-line monitoring towards mobile fortune inspection provided in the embodiment of the present invention
Method flow diagram.
Embodiment
In order that those skilled in the art are better understood from the technical scheme in the application, implement below in conjunction with the present invention
Accompanying drawing in example, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, it is clear that described embodiment
Only it is the part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, people in the art
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
A kind of 10KV cable local discharges towards mobile fortune inspection provided below in conjunction with the accompanying drawings the embodiment of the present invention
On-line monitoring method is described in detail with system, although the invention provides the method as described in following embodiments or flow chart
Operating procedure, but either can include more or less operations in the process without performing creative labour based on conventional
Step.
As shown in figure 1, a kind of 10KV cable local discharges towards mobile fortune inspection that the embodiment of the present invention is provided are online
Monitoring system, including partial discharge monitoring module, GPS module, wire/wireless communication private network, stand room O＆M terminal and movement
Fortune inspection server, the partial discharge monitoring module, GPS module, wire/wireless communication private network and station room O＆M terminal configure
At the both ends of every section of cable, the mobile fortune inspection server configuration is in remote monitoring center.
The typical wiring mode of urban power distribution network has the more contacts of more segmentations, hand in hand looped network, dijection and to penetrating net at present
Network topology mode, the head and end of every section of cable are respectively connected to one kind or two of switchgear house, ring main unit, Switching Station and feeder pillar
Kind, and it is furnished with monitoring power distribution equipment, possess wired or wireless communication passage, and there is power supply and secondary device space.
For above-mentioned distribution system, partial discharge monitoring module, GPS module, power train is respectively configured at the both ends of cable
System wired or wireless communication private network and station room O＆M terminal.
The partial discharge monitoring module by HF current transformer measure cable Leakage Current, and with the GPS moulds
Block connects, and for increasing correct time stamp in measurement data, the time precision that the GPS module provides is less than 50ns, leads to
PLD is crossed to ensure that the partial discharge monitoring module obtains the sampling of timestamp and acquisition Leakage Current value
Synchronism.The partial discharge monitoring module monitors are to after partial discharge phenomenon, if Leakage Current value is more than the electric current of setting
Threshold value, then the Leakage Current value with timestamp and monitoring device numbering are uploaded to the station room O＆M terminal；If let out
Reveal the current threshold that current value is less than setting, then do not upload.
The station room O＆M terminal is responsible for the device fault information of power distribution station room, one or more local for storing
The numbering of the Leakage Current information and monitoring device with timestamp that the monitoring modular that discharges uploads.Combining station room is transported on this basis
The pre-stored assets information of terminal is tieed up, current cable Leakage Current value and typical cable Leakage Current value are contrasted, and root
Urgency level grading is carried out to the cable local discharge order of severity according to comparing result：
Calculate the average value of current cable Leakage Current value and cable Leakage Current storage history value；
When the average value is less than typical cable Leakage Current value, labeled as general；
When the average value is more than typical cable Leakage Current value, but is less than 3 times of typical cable Leakage Current values, mark
To be serious；
When the average value is more than 3 times of typical cable Leakage Current values, labeled as very serious.
Remote mobile fortune inspection server is uploaded to for serious and very under menace level failure cable information, and is being believed
Building-out cable asset number in breath；For not processed labeled as in general shelf depreciation.
The mobile fortune inspection server is after the serious of upload or failure cable information very under menace level is received, root
Numbered according to cable asset number and monitoring device, search same cable asset number but different monitoring devices numbering it is nearest when
Carve and the time difference is less than 30ns upload information, and position of failure point is calculated with this, calculation formula is as follows：
L be trouble point apart from first section distance, L is cable total length, t1For head end timestamp time, t2For end timestamp when
Between, v0For electromagnetic transmission speed.
Cable fault information, urgency level and the cable information are pushed to maintainer by the mobile fortune inspection server
Mobile fortune inspection terminal, maintainer examined after terminal receives fault message by mobile transport, can be obtained according to cable asset number
Live determination is carried out after taking its position, and arranges defect expressivity power failure plan, to implement to overhaul.
The present invention is by combining existing power distribution station room, the communication equipment of ring main unit and GPS module, believing containing cable assets
The intelligent O＆M terminal of breath, sets up cable local discharge monitoring modular, completes the standardization access of cable local discharge information,
And standardized cable shelf depreciation information is uploaded into mobile fortune inspection server, the online reality of cable local discharge information is completed with this
When monitor, the effective mobile fortune check system of support is solved in existing power distribution network movement fortune check system rapid rush-repair and failure anticipation
The problem of lacking cable machinery status data and fault location information.
As shown in Fig. 2 to additionally provide a kind of 10KV cable local discharges towards mobile fortune inspection online for the embodiment of the present invention
Monitoring method, step are as follows：
S101, the partial discharge monitoring module monitors Leakage Current at cable both ends, the synchronous acquisition office under GPS module time service
Portion's discharge information, it is uploaded to each station room O＆M terminal；
When shelf depreciation occurs for cable, the partial discharge monitoring module monitors positioned at cable head and end are electric to leakage
Stream, cable leakage current values are recorded respectively, and ensure the synchronism of sampling by GPS module time service.
If Leakage Current value is more than the current threshold of setting, the Leakage Current value with timestamp and monitoring are set
Standby numbering is uploaded to the station room O＆M terminal；If Leakage Current value is less than the current threshold of setting, do not upload.
S102, the station room O＆M terminal at cable both ends complete urgency level grading according to shelf depreciation information, by event
Barrier cable information is uploaded to mobile fortune inspection server；
The station room O＆M terminal is pre-stored with cable assets information, and current cable Leakage Current value is let out with typical cable
Dew current value is contrasted, and the cable local discharge order of severity is classified according to comparing result：
Calculate the average value of current cable Leakage Current value and cable Leakage Current storage history value；
When the average value is less than typical cable Leakage Current value, labeled as general；
When the average value is more than typical cable Leakage Current value, but is less than 3 times of typical cable Leakage Current values, mark
To be serious；
When the average value is more than 3 times of typical cable Leakage Current values, labeled as very serious.
Remote mobile fortune inspection server is uploaded to for serious and very under menace level failure cable information, and is being believed
Building-out cable asset number in breath；For not processed labeled as in general shelf depreciation.
S103, the mobile fortune inspection server calculate partial discharge position according to the failure cable information；
The mobile fortune inspection server is after the serious of upload or failure cable information very under menace level is received, root
Numbered according to cable asset number and monitoring device, search same cable asset number but different monitoring devices numbering it is nearest when
Carve and the time difference is less than 30ns upload information, and position of failure point is calculated with this, calculation formula is as follows：
L be trouble point apart from first section distance, L is cable total length, t1For head end timestamp time, t2For end timestamp when
Between, v0For electromagnetic transmission speed.
The failure cable information and positional information are pushed to mobile fortune inspection eventually by S104, the mobile fortune inspection server
End；
Cable fault information, urgency level and the cable information are pushed to maintainer by the mobile fortune inspection server
Mobile fortune inspection terminal, maintainer examined after terminal receives fault message by mobile transport, can be obtained according to cable asset number
Live determination is carried out after taking its position, and arranges defect expressivity power failure plan, to implement to overhaul.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. 10KV cable local discharge on-line monitoring systems towards mobile fortune inspection, it is characterised in that：Including shelf depreciation Monitoring modular, GPS module, room O＆M terminal of standing, wire/wireless communication private network and mobile fortune inspection server, the part are put Pyroelectric monitor module, GPS module and station room O＆M terminal are configured in the both ends of every section of 10KV cable, the mobile fortune inspection server Configuration is in remote monitoring center；The partial discharge monitoring module at cable both ends under the GPS module time service synchronous acquisition shelf depreciation information and on The station room O＆M terminal is reached, failure cable information is uploaded to the mobile fortune inspection server by the station room O＆M terminal； Between the partial discharge monitoring module and the station room O＆M terminal and the station room O＆M terminal is examined with the mobile fortune Data communication between server is completed by the wire/wireless communication private network.
- 2. the 10KV cable local discharge on-line monitoring systems according to claim 1 towards mobile fortune inspection, its feature exists In：The shelf depreciation information includes leakage current values and monitoring device numbering with timestamp.
- 3. the 10KV cable local discharge on-line monitoring systems according to claim 2 towards mobile fortune inspection, its feature exists In：The failure cable information includes the shelf depreciation information and cable asset number.
- 4. the 10KV cable local discharge on-line monitoring systems according to claim 1 towards mobile fortune inspection, its feature exists In：The station room O＆M terminal-pair cable local discharge carries out urgency level grading：Calculate the average value of current cable Leakage Current value and cable Leakage Current storage history value；When the average value is less than typical cable Leakage Current value, labeled as general；When the average value is more than typical cable Leakage Current value, but is less than 3 times of typical cable Leakage Current values, labeled as tight Weight；When the average value is more than 3 times of typical cable Leakage Current values, labeled as very serious；Serious and very under menace level failure cable information is uploaded to remote mobile fortune inspection server；For labeled as one As the shelf depreciation of grade do not process.
- 5. the 10KV cable local discharge on-line monitoring systems according to claim 3 towards mobile fortune inspection, its feature exists In：The mobile fortune inspection server calculates abort situation according to the failure cable information：<mrow> <mi>l</mi> <mo>=</mo> <mfrac> <mi>L</mi> <mn>2</mn> </mfrac> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>t</mi> <mn>1</mn> </msub> <mo>-</mo> <msub> <mi>t</mi> <mn>2</mn> </msub> <mo>)</mo> </mrow> <msub> <mi>v</mi> <mn>0</mn> </msub> </mrow>L be trouble point apart from first section distance, L is cable total length, t1For head end timestamp time, t2For end timestamp time, v0 For electromagnetic transmission speed.
- A kind of 6. 10KV cable local discharge on-line monitoring methods towards mobile fortune inspection, it is characterised in that：Comprise the following steps：S101, the partial discharge monitoring module monitors Leakage Current at cable both ends, synchronous acquisition is locally put under GPS module time service Power information, it is uploaded to each station room O＆M terminal；S102, the station room O＆M terminal at cable both ends complete urgency level grading according to shelf depreciation information, by failure electricity Cable information is uploaded to mobile fortune inspection server；S103, the mobile fortune inspection server calculate partial discharge position according to the failure cable information；The failure cable information and positional information are pushed to mobile fortune inspection terminal by S104, the mobile fortune inspection server.
- 7. the 10KV cable local discharge on-line monitoring methods according to claim 6 towards mobile fortune inspection, its feature exists In：The shelf depreciation information includes leakage current values and monitoring device numbering with timestamp.
- 8. the 10KV cable local discharge on-line monitoring methods according to claim 7 towards mobile fortune inspection, its feature exists In：The failure cable information includes the shelf depreciation information and cable asset number.
- 9. the 10KV cable local discharge on-line monitoring methods according to claim 6 towards mobile fortune inspection, its feature exists In：The station room O＆M terminal-pair cable local discharge carries out urgency level grading：Calculate the average value of current cable Leakage Current value and cable Leakage Current storage history value；When the average value is less than typical cable Leakage Current value, labeled as general；When the average value is more than typical cable Leakage Current value, but is less than 3 times of typical cable Leakage Current values, labeled as tight Weight；When the average value is more than 3 times of typical cable Leakage Current values, labeled as very serious；Serious and very under menace level failure cable information is uploaded to remote mobile fortune inspection server；For labeled as one As the shelf depreciation of grade do not process.
- 10. the 10KV cable local discharge on-line monitoring methods according to claim 8 towards mobile fortune inspection, its feature exists In：The mobile fortune inspection server calculates abort situation according to the failure cable information：<mrow> <mi>l</mi> <mo>=</mo> <mfrac> <mi>L</mi> <mn>2</mn> </mfrac> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>t</mi> <mn>1</mn> </msub> <mo>-</mo> <msub> <mi>t</mi> <mn>2</mn> </msub> <mo>)</mo> </mrow> <msub> <mi>v</mi> <mn>0</mn> </msub> </mrow>L be trouble point apart from first section distance, L is cable total length, t1For head end timestamp time, t2For end timestamp time, v0 For electromagnetic transmission speed.
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| CN201710656872.7A CN107478967A (en) | 2017-08-03 | 2017-08-03 | Towards the 10KV cable local discharges on-line monitoring system and method for mobile fortune inspection |
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| CN201710656872.7A CN107478967A (en) | 2017-08-03 | 2017-08-03 | Towards the 10KV cable local discharges on-line monitoring system and method for mobile fortune inspection |
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| CN110609216A (en) * | 2019-11-03 | 2019-12-24 | 西南交通大学 | Motor train unit cable terminal fault positioning method |
| CN112305386A (en) * | 2020-10-23 | 2021-02-02 | 国网上海市电力公司 | High-voltage cable live-line detection system and method based on digital twinning technology |
| CN114371363A (en) * | 2022-01-06 | 2022-04-19 | 广州市扬新技术研究有限责任公司 | Online monitoring system and method for network cable of rail transit contact network |
| CN117890728A (en) * | 2024-03-14 | 2024-04-16 | 国网山东省电力公司微山县供电公司 | Cable fault on-line monitoring system and positioning method thereof |
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| CN114371363A (en) * | 2022-01-06 | 2022-04-19 | 广州市扬新技术研究有限责任公司 | Online monitoring system and method for network cable of rail transit contact network |
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Application publication date: 20171215 |