CN110068749A - A kind of electric network fault positioning system and localization method - Google Patents
A kind of electric network fault positioning system and localization method Download PDFInfo
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- CN110068749A CN110068749A CN201910478398.2A CN201910478398A CN110068749A CN 110068749 A CN110068749 A CN 110068749A CN 201910478398 A CN201910478398 A CN 201910478398A CN 110068749 A CN110068749 A CN 110068749A
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- transmission line
- data acquisition
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- electric network
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Locating Faults (AREA)
Abstract
The invention discloses a kind of electric network fault positioning system and localization methods, are related to electric network fault field of locating technology, including region division module: for entire power transmission line to be carried out region division, and encoding to each region；Data acquisition module: included at least in each region be located at the first transacter of power transmission line one end substation in the region and in the region power transmission line other end substation the second transacter, and pass through ethernet communication between the first transacter and the second transacter；Data analysis module: for analyzing the travelling wave signal of the power transmission line of the first data acquisition device and the acquisition of the second data acquisition device, and show that travelling wave signal reaches the time of the first data acquisition device and the second data acquisition device respectively.The present invention can quickly confirm abort situation, and have the advantages that good stability, reliability and with high accuracy, can reliably and accurately realize transmission open acess.
Description
Technical field
The present invention relates to electric network fault field of locating technology, specifically a kind of electric network fault positioning system and localization method.
Background technique
All to the operation of power grid, more stringent requirements are proposed for the development of power grid and social progress, reinforces to electric network fault
Diagnostic process is particularly important.With the development of computer technology, the communication technology, network technology etc., use is more advanced
Intellectual technology improves the performance of fault diagnosis system, has important a researching value and practical significance.
Transmission line of electricity is the element of power grid, since it has a very wide distribution, often faces various complicated geographical environments
It just will have a direct impact on the safe and reliable of route when adverse environment condition leads to circuit operation failure with the influence of climatic environment
Operation even will cause large area blackout when serious.The failure of transmission line of electricity mainly has lightning stroke trip failure, external force to destroy
Failure, bird pest failure, the stranded of transmission line icing and conducting wire, damage and flashover burn failure etc..And since transmission line of electricity often has
There is wider range, it tends to be difficult to the quickly specific abort situation of confirmation transmission line of electricity, to give the on-call maintenance of abort situation
Bring inconvenience.
Summary of the invention
The purpose of the present invention is to provide a kind of electric network fault positioning system and localization methods, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of electric network fault positioning system, including region are drawn
Sub-module, data acquisition module and data analysis module, in which:
Region division module: for entire power transmission line to be carried out region division, and each region is encoded；
Data acquisition module: the first data for being located at power transmission line one end substation in the region are included at least in each region
Collection device and in the region power transmission line other end substation the second transacter, and the first data collection fill
Set and the second transacter between pass through ethernet communication；
Data analysis module: for analyzing the power transmission line of the first data acquisition device and the acquisition of the second data acquisition device
Travelling wave signal, and obtain respectively travelling wave signal reach the first data acquisition device and the second data acquisition device time.
As a further solution of the present invention: first data acquisition device and the second data acquisition device respectively with defend
Star positioning system communication.
As a further solution of the present invention: the data analysis module further includes electric network protection module and event integration
Module.
As a further solution of the present invention: the electric network protection module, which includes at least, is located at each substation's branch outlet
The intelligent terminal of side and master control system with intelligent terminal two-way communication；The event integrate module for by fault message with
And the position of fault is integrated into event of failure, and is recorded.
As a further solution of the present invention: it further includes event pushing module that the event, which integrates module, and event pushes
Module is used to the event of failure after integration passing to engineering staff.
A kind of electric network fault positioning system and localization method, localization method the following steps are included:
1) it divides region: entire power transmission line being subjected to region division, and each region is encoded, and this is encoded to
Unique encodings；
2) data are acquired: being acquired respectively by the first data acquisition device and the second data acquisition device defeated in each region
The travelling wave signal of electric wire；
3) data are analyzed: judging that travelling wave signal reaches the substation M of power transmission line side respectively using both-end traveling wave positioning mode
At the time of tm and the power transmission line other side substation N at the time of tn, and determine the change of the fault point and the power transmission line side
The distance between power station M LM.
As a further solution of the present invention: the mode that power transmission line travelling wave signal is acquired in step 2 includes at least high speed and adopts
Collecting voltage or current information and directly acquisition travelling wave signal.
As a further solution of the present invention: step 3 judge travelling wave signal reach transmission line of electricity side substation M when
The method of tn is that wavelet transformation is utilized to extract traveling wave data acquisition device at the time of the substation N of quarter tm and the transmission line of electricity other side
The voltage/current information of acquisition identifies voltage/current traveling wave arrival time.
As a further solution of the present invention: the calculation method of LM in step 3 are as follows:
Wherein, LM is the distance between the substation M of fault point and transmission line of electricity side；L is transmission line of electricity total length, i.e.,
The substation M of transmission line of electricity side and the distance between the substation N of the transmission line of electricity other side；V be traveling wave on the transmission line
Spread speed；At the time of tm is the substation M that traveling wave reaches transmission line of electricity side；Tn is that traveling wave reaches the transmission line of electricity other side
Substation N at the time of.
As a further solution of the present invention: intelligent terminal, and the first data are all arranged in each substation's branch outgoing line side
Acquisition device and the second data acquisition device are all communicated with intelligent terminal, the intelligent terminal and master control system two-way communication.
Compared with prior art, the beneficial effects of the present invention are: electric network fault positioning system and positioning that the present invention designs
Method, in actual use, by the way that entire power transmission line is carried out regional division, so as to quickly confirm abort situation, and
And present system simultaneous the advantages of taking one-end fault analytic approach, both-end fault analytical method and both-end traveling wave positioning mode, have and stablizes
The good, reliability of property and advantage with high accuracy, can reliably and accurately realize transmission open acess.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of electric network fault positioning system；
Fig. 2 is a kind of flow diagram of electric network fault localization method；
Fig. 3 is the overall structure diagram that power transmission line travelling wave signal is acquired in the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of electric network fault positioning system, including region division module, number
According to acquisition module and data analysis module, in which:
Region division module: for entire power transmission line to be carried out region division, and each region is encoded, and should
Unique encodings are encoded to, so that in reporting fault fault zone can be determined according to coding, it is convenient to locate in time and accurately
Manage electric network fault；
Data acquisition module: the first data for being located at power transmission line one end substation in the region are included at least in each region
Collection device and in the region power transmission line other end substation the second transacter, and the first data collection fill
Set and the second transacter between pass through ethernet communication；
Data analysis module: for analyzing the power transmission line of the first data acquisition device and the acquisition of the second data acquisition device
Travelling wave signal, and obtain respectively travelling wave signal reach the first data acquisition device and the second data acquisition device time.
Further: the first data acquisition device and the second data acquisition device are communicated with global position system respectively.
Further: data analysis module further includes that electric network protection module and event integrate module.
It is further: electric network protection module include at least positioned at each substation's branch outgoing line side intelligent terminal and with
The master control system of intelligent terminal two-way communication；Event integrates module for fault message and the position of fault to be integrated into failure thing
Part, and recorded.
Further: it further includes event pushing module that event, which integrates module, and event pushing module will be for after integrating
Event of failure passes to engineering staff, carries out judgement decision for it, it should be noted that staff has in event pushing module
There are corresponding reception terminal, such as PC terminal or cell phone application.
A kind of electric network fault positioning system and localization method, localization method the following steps are included:
1) it divides region: entire power transmission line being subjected to region division, and each region is encoded, and this is encoded to
Unique encodings；
2) data are acquired: being acquired respectively by the first data acquisition device and the second data acquisition device defeated in each region
The travelling wave signal of electric wire；Wherein, acquire power transmission line travelling wave signal mode include at least high speed acquisition voltage or current information with
And directly acquire travelling wave signal；
When using directly acquisition travelling wave signal mode, travelling wave signal is grounded from primary equipment or dedicated traveling wave sensing
Device, the first data acquisition device and the second data acquisition device acquire the voltage/current information at transmission line of electricity both ends respectively, respectively
Fault point distance is calculated using one-end fault analytic approach and both-end fault analytical method；
3) data are analyzed: judging that travelling wave signal reaches the substation M of power transmission line side respectively using both-end traveling wave positioning mode
At the time of tm and the power transmission line other side substation N at the time of tn, and determine between fault point and the substation M of power transmission line side
Distance LM；Wherein judge tm and the transmission line of electricity other side at the time of travelling wave signal reaches the substation M of transmission line of electricity side
The method of tn is that the voltage/current information of traveling wave data acquisition device acquisition is extracted using wavelet transformation at the time of substation N, mirror
It Chu voltage/current traveling wave arrival time, it should be noted that be using hard at the time of identifying travelling wave signal and reach substation
Part circuit identifies traveling wave, the voltage/current travelling wave signal of traveling wave data acquisition device acquisition is analyzed by proprietary hardware circuit, most
Voltage/current traveling wave arrival time is identified eventually, and proprietary hardware circuit includes: multi-path analog to digital conversion circuit, for that will receive
Traveling wave acquisition signal carry out analog-to-digital conversion；Signal conditioning circuit, for being filtered to the electric power traveling wave transient signal of acquisition
And amplification, it forms traveling wave and acquires signal；B code time service circuit acquires data markers markers to traveling wave for improving time service markers,
The accurate relativity of time domain for forming traveling wave acquisition data, if the positioning result of traveling wave positioning mode and fault analytical method is effective,
Fault location uses the positioning result of traveling wave positioning mode；If the result of traveling wave positioning mode is effective, the positioning result of fault analytical method
In vain, then fault location use traveling wave positioning mode positioning result；If the result of traveling wave positioning mode has in vain, fault analytical method
Positioning result is effective, then fault location uses the positioning result of fault analytical method.
Further, in step 3 LM calculation method are as follows:
Wherein, LM is the distance between the substation M of fault point and transmission line of electricity side；L is transmission line of electricity total length, i.e.,
The substation M of transmission line of electricity side and the distance between the substation N of the transmission line of electricity other side；V be traveling wave on the transmission line
Spread speed；At the time of tm is the substation M that traveling wave reaches transmission line of electricity side；Tn is that traveling wave reaches the transmission line of electricity other side
Substation N at the time of.
On the basis of above structure, intelligent terminal is all arranged in each substation's branch outgoing line side, and the first data acquire
Device and the second data acquisition device are all communicated with intelligent terminal, and it is fixed to obtain failure for intelligent terminal and master control system two-way communication
After the information of position, the fault location information of the intelligent terminal acquisition affiliated power network line of intelligent terminal is simultaneously uploaded to master control system, master control
System receives the electric network data that intelligent terminal transmission comes and carries out static and transient state and analyzes in real time, forms control command, and will control
System order reaches down electric network protection system respectively and intelligent terminal carries out corresponding protection act, wherein master control system orders control
It enables and the corresponding protection act of electric network protection system progress is handed down to by partition network communication system, master control system will be under control command
Intelligent terminal is issued, after intelligent terminal receives the control command that master control system issues, the cutting load object in power grid is determined and incites somebody to action
Corresponding control command is handed down to related protection control unit, and intelligent terminal also detects the load of its affiliated substation, and in real time
The load that will test is uploaded to master control system, and master control system selects optimal cutting load group according to the load received
It closes, and cutting load is executed to corresponding substation, intelligent terminal cutting load amount and can cut the reality in its affiliated substation negative
Lotus movement execution state is uploaded to master control system and is monitored in real time.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of electric network fault positioning system, it is characterised in that: analyzed including region division module, data acquisition module and data
Module, in which:
Region division module: for entire power transmission line to be carried out region division, and each region is encoded；
Data acquisition module: the first data collection for being located at power transmission line one end substation in the region is included at least in each region
Device and in the region power transmission line other end substation the second transacter, and the first transacter with
And second pass through ethernet communication between transacter；
Data analysis module: for analyzing the row of the power transmission line of the first data acquisition device and the acquisition of the second data acquisition device
Wave signal, and show that travelling wave signal reaches the time of the first data acquisition device and the second data acquisition device respectively.
2. a kind of electric network fault positioning system according to claim 1, it is characterised in that: first data acquisition device
It is communicated respectively with global position system with the second data acquisition device.
3. a kind of electric network fault positioning system according to claim 1, it is characterised in that: the data acquisition module also wraps
It includes electric network protection module and event integrates module.
4. a kind of electric network fault positioning system according to claim 3, it is characterised in that: the electric network protection module is at least
Master control system including being located at the intelligent terminal of each substation's branch outgoing line side and with intelligent terminal two-way communication；The thing
Part integrates module for fault message and the position of fault to be integrated into event of failure, and is recorded.
5. a kind of electric network fault positioning system according to claim 4, it is characterised in that: the event is integrated module and also wrapped
Event pushing module is included, and event pushing module is used to the event of failure after integration passing to engineering staff.
6. a kind of electric network fault positioning system and localization method, feature described in any one of -5 exist according to claim 1
In: its localization method the following steps are included:
1) it divides region: entire power transmission line being subjected to region division, and each region is encoded, and this is encoded to uniquely
Coding；
2) data are acquired: power transmission line in each region is acquired by the first data acquisition device and the second data acquisition device respectively
Travelling wave signal；
3) analyze data: using both-end traveling wave positioning mode judge respectively travelling wave signal reach power transmission line side substation M when
Tn at the time of the substation N of quarter tm and the power transmission line other side, and determine the substation M of the fault point and the power transmission line side
The distance between LM.
7. a kind of electric network fault localization method according to claim 6, it is characterised in that: acquire power transmission line row in step 2
The mode of wave signal includes at least high speed acquisition voltage or current information and directly acquires travelling wave signal.
8. a kind of electric network fault localization method according to claim 6, it is characterised in that: step 3 judges that travelling wave signal arrives
Up to transmission line of electricity side substation M at the time of tm and the transmission line of electricity other side substation N at the time of tn method be utilize
Wavelet transformation extracts the voltage/current information of traveling wave data acquisition device acquisition, identifies voltage/current traveling wave arrival time.
9. a kind of electric network fault localization method according to claim 6, it is characterised in that: the calculation method of LM in step 3
Are as follows:
Wherein, LM is the distance between the substation M of fault point and transmission line of electricity side；L is transmission line of electricity total length, that is, is transmitted electricity
The substation M of route side and the distance between the substation N of the transmission line of electricity other side；V is the biography of traveling wave on the transmission line
Broadcast speed；At the time of tm is the substation M that traveling wave reaches transmission line of electricity side；Tn is the change that traveling wave reaches the transmission line of electricity other side
At the time of the N of power station.
10. a kind of electric network fault localization method according to claim 6, it is characterised in that: each substation's branch outlet
Intelligent terminal is all arranged in side, and the first data acquisition device and the second data acquisition device are all communicated with intelligent terminal, the intelligence
It can terminal and master control system two-way communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910478398.2A CN110068749A (en) | 2019-06-03 | 2019-06-03 | A kind of electric network fault positioning system and localization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910478398.2A CN110068749A (en) | 2019-06-03 | 2019-06-03 | A kind of electric network fault positioning system and localization method |
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| CN110068749A true CN110068749A (en) | 2019-07-30 |
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| CN201910478398.2A Pending CN110068749A (en) | 2019-06-03 | 2019-06-03 | A kind of electric network fault positioning system and localization method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336551A (en) * | 2022-01-14 | 2022-04-12 | 贵州大学 | Flexible direct current transmission system fault protection system based on MMC |
| CN117761469A (en) * | 2024-02-22 | 2024-03-26 | 陕西公众电气股份有限公司 | Inspection method and system for diagnosing partial discharge of overhead line of power distribution network |
-
2019
- 2019-06-03 CN CN201910478398.2A patent/CN110068749A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336551A (en) * | 2022-01-14 | 2022-04-12 | 贵州大学 | Flexible direct current transmission system fault protection system based on MMC |
| CN117761469A (en) * | 2024-02-22 | 2024-03-26 | 陕西公众电气股份有限公司 | Inspection method and system for diagnosing partial discharge of overhead line of power distribution network |
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