CN209513962U - A kind of distribution network cable initial failure positioning system based on transient disturbance - Google Patents
A kind of distribution network cable initial failure positioning system based on transient disturbance Download PDFInfo
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- CN209513962U CN209513962U CN201821722837.7U CN201821722837U CN209513962U CN 209513962 U CN209513962 U CN 209513962U CN 201821722837 U CN201821722837 U CN 201821722837U CN 209513962 U CN209513962 U CN 209513962U
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- 230000001052 transient effect Effects 0.000 title claims abstract description 61
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims description 7
- 238000013528 artificial neural network Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000012706 support-vector machine Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
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Abstract
The distribution network cable initial failure positioning system based on transient disturbance that the utility model discloses a kind of, the system comprises information transmission modular, Transient Disturbance Signal detection module, Transient Disturbance Signal identification module, fault pre-alarming module, fault data processing module and cable fault locating modules.The system is a kind of efficient, low cost, high reliability early warning of cable initial failure and positioning system, it can simplify and promoted maintenance work efficiency, effective prevention cable fault, finds the initial failure of cable in time, avoids loss of outage caused by cable fault.
Description
Technical field
The utility model belongs to technical field of electric power, and it is fixed to be related to a kind of distribution network cable initial failure based on transient disturbance
Position system.
Background technique
Power distribution network is located at the end of electric system, is directly connected with user, power supply capacity of the entire electric system to user
It is all realized and is ensured by it with power supply quality.Therefore, power distribution network is both the development foundation of entire electric system and it is final
Home to return to is the important link for realizing smart grid.Meanwhile with the gradually expansion of city size, the load density of power distribution network is not
Disconnected to increase, the requirement to indexs such as its power supply reliability and power supply qualitys is higher and higher.But currently, mutual during the big load of power grid
For scarce capacity, it is most likely that the power outage of occurrence of large-area, power supply reliability and the ability withstood natural calamities are urgently
It improves.
With the quickening of urbanization process, cable deal shared in the net power supply of city is also increasingly heavier, gradually replaces
Aerial power supply line, is widely used in power distribution network.Buried cable is more safer than overhead line in inclement weather, and short distance passes
It is defeated more economical, and have the characteristics that be not easy affected by environment and easy to maintain, therefore it is widely applied.Power cable is main
For the power lead-in of substation, power plant and industrial and mining enterprises, use scope is gradually extensively to be taken seriously.With city
The development of construction, overhead transmission line is gradually replaced power cable, and shared ratio is increasing in the net power supply of city.With
Being widely used for power cable necessarily bring increasing for cable fault, buried cable is easier to draw because of shelf depreciation, flashover etc.
Hair causes permanent fault, and trouble shoot is more difficult, is the highest equipment of failure rate in Distribution Network Equipment.In order to ensure power cable
It safely and steadily runs, cable initial failure is accomplished to find to cope in time early.
Utility model content
To solve the above problems, a kind of distribution network cable initial failure positioning system based on transient disturbance of the utility model,
The system is a kind of efficient, low cost, high reliability early warning of cable initial failure and positioning system, can simplify and is promoted
Maintenance work efficiency, effectively prevents cable fault, finds the initial failure of cable in time, avoids having a power failure caused by cable fault
Loss.
The utility model is specially a kind of distribution network cable initial failure positioning system based on transient disturbance, the system packet
Include information transmission modular, Transient Disturbance Signal detection module, Transient Disturbance Signal identification module, fault pre-alarming module, number of faults
According to processing module and cable fault locating module；The information of measurement point is transferred to the transient disturbance by the information transmission modular
Signal detection module and the fault data processing module；The Transient Disturbance Signal detection module is connected to the transient disturbance
Signal identification module, the Transient Disturbance Signal identification module identifies the Transient Disturbance Signal detected, and tentatively sentences
Disconnected a possibility that breaking down；The Transient Disturbance Signal identification module is connected to the fault pre-alarming module, and the failure is pre-
Alert module is issued warning signal when the Transient Disturbance Signal identification module identifies that the possibility that breaks down is excessively high；It is described temporary
State disturbing signal identification module is also connected to the fault data processing module, and the fault data processing module is to identifying
Suspected malfunctions information is further judged and is handled；The fault data processing module is connected to the cable fault positioning mould
Block, the cable fault that the cable fault locating module judges the fault data processing module positions, with quick
Obtain the specific location of Method of Cable Trouble Point.
Further, the Transient Disturbance Signal detection module and Transient Disturbance Signal identification module are based on expert system
Interference signal statistical model identification operation, effective fault-signal is acquired.
Further, the information transmission modular can carry out between modules the collected fault-signal of measurement point
Signal conversion and data transmitting.
Further, the Transient Disturbance Signal detection module is able to detect the ground connection line current of cable, residual voltage, zero
The electric characteristic amount of the reflection cable electrical characteristic such as sequence electric current.
Further, the Transient Disturbance Signal identification module can be using neural network, support vector machine etc. to signal
Carry out the identification of multiclass disturbance.
Further, the fault data processing module and cable fault locating module are to the electricity based on Transient Disturbance Signal
Cable initial failure is judged and is positioned.
Detailed description of the invention
Fig. 1 is a kind of distribution network cable initial failure positioning system structure schematic diagram based on transient disturbance of utility model；
Fig. 2 is distribution typical topology schematic diagram.
Specific embodiment
The distribution network cable initial failure positioning system based on transient disturbance a kind of to utility model is specific with reference to the accompanying drawing
Example elaborates.
As shown in Figure 1, distribution network cable initial failure positioning system of the utility model based on transient disturbance includes that information passes
Defeated module, Transient Disturbance Signal detection module, Transient Disturbance Signal identification module, fault pre-alarming module, fault data handle mould
Block and cable fault locating module；The information of measurement point is transferred to the Transient Disturbance Signal and detected by the information transmission modular
Module and the fault data processing module；The Transient Disturbance Signal detection module is connected to the Transient Disturbance Signal identification
Module, the Transient Disturbance Signal identification module identify the Transient Disturbance Signal detected, and tentatively event occurs for judgement
A possibility that barrier；The Transient Disturbance Signal identification module is connected to the fault pre-alarming module, and the fault pre-alarming module exists
The Transient Disturbance Signal identification module identifies to be issued warning signal when the possibility that breaks down is excessively high；The transient disturbance letter
Number identification module is also connected to the fault data processing module, and the fault data processing module is to the suspected malfunctions identified
Information is further judged and is handled；The fault data processing module is connected to the cable fault locating module, described
The cable fault that cable fault locating module judges the fault data processing module positions, with quick obtaining cable
The specific location of fault point.
The Transient Disturbance Signal detection module and Transient Disturbance Signal identification module are that the interference based on expert system is believed
Number statistical model identification operation, effective fault-signal is acquired.
The collected fault-signal of measurement point can be carried out between modules signal conversion by the information transmission modular
And data transmitting.
The Transient Disturbance Signal detection module is able to detect the ground connection line current of cable, residual voltage, zero-sequence current etc.
Reflect the electric characteristic amount of cable electrical characteristic.
The Transient Disturbance Signal identification module can carry out multiclass to signal using neural network, support vector machine etc. and disturb
Dynamic identification.
The fault data processing module and cable fault locating module are to the cable early stage event based on Transient Disturbance Signal
Barrier is judged and is positioned.
Installed in power distribution network topological structure as shown in Fig. 2, be typical power distribution network topological structure, in the figure it is faulty temporarily
Point occurs for state signal measurement unit (mutual inductor) and cable initial failure.
Finally it should be noted that only illustrating the technical solution of the utility model in conjunction with above-described embodiment rather than limiting it
System.Those of ordinary skills in the art should understand that arriving, those skilled in the art can be to the specific implementation of the utility model
Mode is modified or replaced equivalently, but these modifications or change are being applied among pending claims.
Claims (6)
1. a kind of distribution network cable initial failure positioning system based on transient disturbance, which is characterized in that the system comprises information
Transmission module, Transient Disturbance Signal detection module, Transient Disturbance Signal identification module, fault pre-alarming module, fault data processing
Module and cable fault locating module；The information of measurement point is transferred to the Transient Disturbance Signal and examined by the information transmission modular
Survey module and the fault data processing module；The Transient Disturbance Signal detection module, which is connected to the Transient Disturbance Signal, to be known
Other module, the Transient Disturbance Signal identification module identify the Transient Disturbance Signal detected, and tentatively judgement occurs
A possibility that failure；The Transient Disturbance Signal identification module is connected to the fault pre-alarming module, the fault pre-alarming module
It is issued warning signal when the Transient Disturbance Signal identification module identifies that the possibility that breaks down is excessively high；The transient disturbance
Signal identification module is also connected to the fault data processing module, doubtful event of the fault data processing module to identifying
Barrier information is further judged and is handled；The fault data processing module is connected to the cable fault locating module, institute
It states the cable fault that cable fault locating module judges the fault data processing module to position, with quick obtaining electricity
The specific location of cable fault point.
2. a kind of distribution network cable initial failure positioning system based on transient disturbance according to claim 1, feature exist
In the system that, the Transient Disturbance Signal detection module and Transient Disturbance Signal identification module are the interference signals based on expert system
The operation for counting pattern identification, effective fault-signal is acquired.
3. a kind of distribution network cable initial failure positioning system based on transient disturbance according to claim 1, feature exist
In the collected fault-signal of measurement point can be carried out between modules signal conversion and data by the information transmission modular
Transmitting.
4. a kind of distribution network cable initial failure positioning system based on transient disturbance according to claim 1, feature exist
The reflection electricity such as the ground connection line current of cable, residual voltage, zero-sequence current are able to detect in, the Transient Disturbance Signal detection module
The electric characteristic amount of cable electrical characteristic.
5. a kind of distribution network cable initial failure positioning system based on transient disturbance according to claim 1, feature exist
In the Transient Disturbance Signal identification module can carry out multiclass disturbance to signal using neural network, support vector machine etc.
Identification.
6. a kind of distribution network cable initial failure positioning system based on transient disturbance according to claim 1, feature exist
In the fault data processing module and cable fault locating module carry out the cable initial failure based on Transient Disturbance Signal
Judgement and positioning.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821722837.7U CN209513962U (en) | 2018-10-24 | 2018-10-24 | A kind of distribution network cable initial failure positioning system based on transient disturbance |
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| CN201821722837.7U CN209513962U (en) | 2018-10-24 | 2018-10-24 | A kind of distribution network cable initial failure positioning system based on transient disturbance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308268A (en) * | 2020-02-06 | 2020-06-19 | 云南电网有限责任公司电力科学研究院 | Method and system for evaluating latent fault of power distribution network equipment |
| CN113093050A (en) * | 2021-03-31 | 2021-07-09 | 中国矿业大学 | Cable early fault identification method and system based on cable grounding wire current time-frequency characteristics |
-
2018
- 2018-10-24 CN CN201821722837.7U patent/CN209513962U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308268A (en) * | 2020-02-06 | 2020-06-19 | 云南电网有限责任公司电力科学研究院 | Method and system for evaluating latent fault of power distribution network equipment |
| CN111308268B (en) * | 2020-02-06 | 2022-04-12 | 云南电网有限责任公司电力科学研究院 | Method and system for evaluating latent fault of power distribution network equipment |
| CN113093050A (en) * | 2021-03-31 | 2021-07-09 | 中国矿业大学 | Cable early fault identification method and system based on cable grounding wire current time-frequency characteristics |
| CN113093050B (en) * | 2021-03-31 | 2023-07-07 | 中国矿业大学 | Cable early fault identification method and system based on time-frequency characteristics of cable grounding wire current |
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