CN109188199A - A kind of electrical power distribution network fault location method, device and system - Google Patents
A kind of electrical power distribution network fault location method, device and system Download PDFInfo
- Publication number
- CN109188199A CN109188199A CN201811003109.5A CN201811003109A CN109188199A CN 109188199 A CN109188199 A CN 109188199A CN 201811003109 A CN201811003109 A CN 201811003109A CN 109188199 A CN109188199 A CN 109188199A
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- signal
- module
- optical waveguide
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
The application provides a kind of electrical power distribution network fault location method, device and system, wherein the described method comprises the following steps: obtaining the corresponding current magnetic field signal of optical signal that optical waveguide magnetic field sensor exports at current time；Compare current magnetic field signal and history magnetic field signal, judges whether current magnetic field signal is distorted；If current magnetic field signal is distorted, determine that distribution line where the corresponding optical waveguide magnetic field sensor of current magnetic field signal is fault point.In herein described method, under normal circumstances, electric current in distribution line tends towards stability state, magnetic field signal around distribution line also tends towards stability state, if current magnetic field signal is distorted, illustrate that distribution line breaks down, due to being equipped with multiple optical waveguide magnetic field sensors in distribution line, each optical waveguide magnetic field sensor respectively corresponds different distribution lines, therefore, distribution line where optical waveguide magnetic field sensor corresponding with magnetic field signal can be determined according to the magnetic field signal for generating distortion.
Description
Technical field
This application involves the fault detection technique fields in Automation of Electric Systems, and in particular to a kind of distribution network failure is fixed
Position methods, devices and systems.
Background technique
Power distribution network, which refers to from power transmission network or regional power plant, receives electric energy, distribute or is pressed on the spot by distribution facility voltage by
Grade distributes to the power network of all types of user.If power distribution network breaks down, distribution of the power distribution network for electric energy is influenced.For example, if
Singlephase earth fault occurs for power distribution network, and on the one hand needing to stop transport occurs the distribution line of single-phase earthing, is searching fault point and is disappearing
Except normal power supply could be restored in failure process, on the other hand there may be overvoltage, distribution facility is burnt out, or even cause phase
Between short circuit and expand accident.Therefore, after distribution network failure occurs, timely fault point is needed, to repair event in time
Barrier.
Existing electrical power distribution network fault location method depends on fault detector, and fault detector is installed on along distribution line
In power network, once distribution line breaks down, short circuit current flows through fault detector, and fault detector will alarm, power supply
Fault detector before side to fault point generates alarm, and the later fault detector in fault point does not generate alarm, therefore,
Determine that fault point is located between the fault detector and first fault detector that do not alarm of the last one alarm, then, warp
Investigation analysis is crossed, determines fault point.However, fault detector belongs to electronic equipment, electronic equipment is unstable due to itself
Property, cause to be easy to appear the problem that reliability is low, stability is poor during carrying out fault location using fault detector,
Wrong report can possibly even be led to the problem of, failed to report.
Summary of the invention
The application provides a kind of electrical power distribution network fault location method, device and system, steady to solve existing Fault Locating Method
The problem of qualitative poor, poor reliability.
The application's in a first aspect, provides a kind of electrical power distribution network fault location method, and the method is applied to main website server,
The main website server is connected with optical waveguide magnetic field sensor, and the optical waveguide magnetic field sensor is arranged in distribution line electric
The outer surface of cable, which comprises
Obtain the corresponding current magnetic field signal of optical signal that optical waveguide magnetic field sensor exports at current time；
The current magnetic field signal is compared with history magnetic field signal, judges whether the current magnetic field signal occurs
Distortion；
If the current magnetic field signal is distorted, it is determined that the corresponding optical waveguide magnetic field sensing of the current magnetic field signal
Distribution line where device is fault point, wherein receiving time the connecing in the current magnetic field signal of the history magnetic field signal
Before between time receiving.
Optionally, where determining the corresponding optical waveguide magnetic field sensor of the magnetic field signal distribution line be fault point it
Afterwards, further includes:
Fault point warning message is generated, the fault point warning message includes: the number and event of optical waveguide magnetic field sensor
Barrier point generation time.
The second aspect of the application provides a kind of distribution network fault positioning device, and described device is applied to main website server,
The main website server is connected with optical waveguide magnetic field sensor, and the optical waveguide magnetic field sensor is arranged in power distribution network, institute
Stating device includes:
Module is obtained, for obtaining optical waveguide magnetic field sensor in the corresponding current magnetic field letter of optical signal currently exported
Number；
Judgment module judges the current magnetic for the current magnetic field signal to be compared with history magnetic field signal
Whether field signal is distorted；
Determining module, for after the judgment module determines that the current magnetic field signal is distorted, it is determined that institute
Distribution line where stating the corresponding optical waveguide magnetic field sensor of current magnetic field signal is fault point, wherein the history magnetic field letter
Number receiving time before the receiving time of the current magnetic field signal.
Optionally, described device further include:
Warning message generation module, for generating fault point warning message, the fault point warning message includes: optical waveguide
The number and fault point generation time of magnetic field sensor.
The third aspect of the application provides a kind of Distribution Fault Location System, the system comprises: main website server and
Optical waveguide magnetic field sensor；
The main website server is connected with optical waveguide magnetic field sensor, and the optical waveguide magnetic field sensor is arranged in distribution
In net；
The main website server includes the device that the possible implementation of any one in second aspect provides.
Optionally, the system also includes light supply apparatus, signal processing apparatus and narrow band communication modules；
The output end of the light supply apparatus and the input terminal of optical waveguide magnetic field sensor are attached using optical fiber, the light
Source device is for generating the first optical signal, and by first optical signal transmission to optical waveguide magnetic field sensor；
The output end of the optical waveguide magnetic field sensor and the input terminal of the signal processing apparatus are connected using optical fiber
It connects, the optical waveguide magnetic field sensor obtains the second optical signal, and second light is believed for modulating first optical signal
Number it is transmitted to the signal processing apparatus；
The output end of the signal processing apparatus is electrically connected with the input terminal of the narrow band communication module, the signal processing
Device is used to convert the corresponding magnetic field signal of second optical signal for second optical signal, and the magnetic field signal is passed
Transport to the narrow band communication module；
Using wireless communication between the narrow band communication module and the main website server, the narrow band communication module is used for
The corresponding magnetic field signal of second optical signal is transmitted to the main website server.
Optionally, the optical waveguide magnetic field sensor is set to the outer surface of cable in distribution line；
The light supply apparatus, signal processing apparatus and narrow band communication module are set to inside positioning case, and the positioning case is set
It is placed in electric pole outer surface.
Optionally, the light supply apparatus includes: light source module, EDFA light amplifier module and light wavelength division multiplexing；
The light source module is for generating third optical signal；
The EDFA light amplifier module obtains the 4th optical signal for amplifying the third optical signal；
The light wavelength division multiplexing is used to for the 4th optical signal to be divided into three tunnels, obtains three first optical signals,
And by first optical signal transmission to the optical waveguide magnetic field sensor.
Optionally, the signal processing apparatus includes: photoelectric conversion module, electric signal filter and amplification module, analog-to-digital conversion
Module and electronic signal processing module；
The photoelectric conversion module is used to convert the first electric signal for second optical signal；
The electric signal filter and amplification module is used to for first electric signal to be filtered enhanced processing, obtains the second electricity
Signal；
The analog-to-digital conversion module is used to second electric signal being converted to digital electric signal；
The electronic signal processing module is for handling the digital electric signal, so that it is corresponding to obtain second optical signal
Magnetic field signal.
Optionally, the system also includes solar cell modules；
The solar cell module is set to the positioning case outer surface, the solar cell module respectively with it is described
Light source module, EDFA light amplifier module, photoelectric conversion module, electronic signal processing module and the electrical connection of narrow band communication module；
The solar cell module is the light source die for converting solar energy into electrical energy, and using the electric energy
Block, EDFA light amplifier module, photoelectric conversion module, electronic signal processing module and narrow band communication module for power supply.
The application provides a kind of electrical power distribution network fault location method, device and system, wherein the method includes following steps
It is rapid: to obtain the corresponding current magnetic field signal of optical signal that optical waveguide magnetic field sensor exports at current time；By the current magnetic
Field signal is compared with history magnetic field signal, judges whether the current magnetic field signal is distorted；If the current magnetic field
Signal is distorted, it is determined that distribution line where the corresponding optical waveguide magnetic field sensor of the current magnetic field signal is failure
Point.In herein described method, in power distribution network there is no in the case where failure, the electric current in distribution line tends towards stability shape
State, then the state that also tends towards stability of the magnetic field signal around distribution line if current magnetic field signal is distorted illustrates distribution line
It breaks down, due to being equipped with multiple optical waveguide magnetic field sensors in distribution line, each optical waveguide magnetic field sensor is right respectively
Different distribution lines is answered, therefore, can determine light wave magnetic conduction corresponding with magnetic field signal according to the magnetic field signal for generating distortion
Distribution line where field sensor.In addition, optical waveguide magnetic field sensor is passive device, external power supply, and optical waveguide are not needed
Magnetic field sensor fast response time, high sensitivity can be improved the speed and precision of fault location.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of workflow schematic diagram of electrical power distribution network fault location method provided by the embodiments of the present application；
Fig. 2 is the workflow schematic diagram of another electrical power distribution network fault location method provided by the embodiments of the present application；
Fig. 3 is a kind of structural schematic diagram of distribution network fault positioning device provided by the embodiments of the present application；
Fig. 4 is a kind of structural schematic diagram of Distribution Fault Location System provided by the embodiments of the present application.
It illustrates: 1- cable, 2- optical waveguide magnetic field sensor, 3- light source module, 4-EDFA image intensifer, 5- light wave point
Multiplexer, 6- photoelectric conversion module, 7- electric signal filter and amplification module, 8- analog-to-digital conversion module, 9- electronic signal processing module,
10- narrow band communication module, 11- solar cell module, 12- main website server.
Specific embodiment
To solve the problems, such as that existing Fault Locating Method stability is poor, poor reliability, the application a kind of power distribution network is provided therefore
Hinder localization method, device and system.
Work flow diagram shown in referring to Fig.1, the embodiment of the present application provide a kind of electrical power distribution network fault location method, the side
Method is applied to main website server, and the main website server is connected with optical waveguide magnetic field sensor, the optical waveguide magnetic field sensing
The outer surface of cable in distribution line is arranged in device, the described method comprises the following steps:
Step 101, the corresponding current magnetic field signal of optical signal that optical waveguide magnetic field sensor exports at current time is obtained.
Optical waveguide magnetic field sensor is using magnetic field sensor made of optical waveguide principle, and optical waveguide magnetic field sensor receives
First optical signal exports the second optical signal after inner modulation.In the inside of optical waveguide magnetic field sensor, it is provided with micro loop
The outer surface of cable in distribution line is arranged in optical waveguide magnetic field sensor by antenna, in the case that distribution line is powered, cable
The electric current that inside is passed through generates magnetic field in the position of optical waveguide magnetic field sensor, then the Micro-ring inside optical waveguide magnetic field sensor
Shape antenna, which generates induced voltage, leads to transparent Jie of optical waveguide magnetic field sensor interior lights if induced voltage is widely varied
The refractive index of matter changes, so that the phase angle of the first optical signal changes, sends out so as to cause the second optical signal of output
Changing.Wherein, the second optical signal is the optical signal that optical waveguide magnetic field sensor exports at current time, and the second optical signal is turned
Magnetic field signal is turned to, can be obtained current magnetic field signal.
Step 102, the current magnetic field signal is compared with history magnetic field signal, judges the current magnetic field signal
Whether it is distorted.
In the step, main website server is stored with history magnetic field signal, it is generally the case that by the amplitude of current magnetic field signal
Convergence analysis is carried out with the amplitude of history magnetic field signal, if the amplitude of current magnetic field signal is widely varied, it is determined that when
Preceding magnetic field signal is distorted.
For example, the information of the magnetic field signal at each moment is recorded, according to the relationship of magnetic field B and time T, magnetic is drawn
The graph of relation of field B- time T, the graph of relation are Dynamic Graph, and the magnetic field signal at current time can be reflected in this in real time
In graph of relation, under normal circumstances, the electric current in cable is in steady state, and the magnetic field signal in graph of relation is also at
Stable state, once ground fault occurs, the electric current generation in cable significantly changes, light wave provided by the embodiments of the present application
Magnetic conduction field sensor has the characteristics that fast response time, enables main website server rapidly by current magnetic field signal reaction to pass
It is that can judge that current magnetic field signal is distorted from graph of relation, if not in time to ground fault in curve graph
It is repaired, after several seconds or several minutes, current magnetic field signal can then sport zero.
Step 103, if the current magnetic field signal is distorted, it is determined that the corresponding optical waveguide of the current magnetic field signal
Distribution line where magnetic field sensor is fault point, wherein the receiving time of the history magnetic field signal is in the current magnetic field
Before the receiving time of signal.
In the step, each optical waveguide magnetic field sensor has corresponding number information, and each optical waveguide magnetic field sensing
Position of the device in power distribution network is fixed, and according to the corresponding relationship of distribution line in number information and power distribution network, that is, can determine failure
The position of point.
From the above technical scheme, in method described herein, in power distribution network, there is no matching in the case where failure
Electric current in electric line tends towards stability state, then the magnetic field signal around distribution line also tends towards stability state, if current magnetic field
Signal is distorted, and illustrates that distribution line breaks down, due to being equipped with multiple optical waveguide magnetic field sensors in distribution line, respectively
A optical waveguide magnetic field sensor respectively corresponds different distribution lines, therefore, can be determined according to the magnetic field signal for generating distortion
Distribution line where optical waveguide magnetic field sensor corresponding with magnetic field signal.In addition, optical waveguide magnetic field sensor is passive device,
Do not need external power supply, and optical waveguide magnetic field sensor fast response time, high sensitivity, can be improved fault location speed and
Precision.
Referring to work flow diagram shown in Fig. 2, the embodiment of the present application provides another electrical power distribution network fault location method, described
Method the following steps are included:
Step 201, the corresponding current magnetic field signal of optical signal that optical waveguide magnetic field sensor exports at current time is obtained.
Step 202, the current magnetic field signal is compared with history magnetic field signal, judges the current magnetic field signal
Whether it is distorted.
Step 203, if the current magnetic field signal is distorted, it is determined that the corresponding optical waveguide of the current magnetic field signal
Distribution line where magnetic field sensor is fault point, wherein the receiving time of the history magnetic field signal is in the current magnetic field
Before the receiving time of signal.
Step 204, fault point warning message is generated, the fault point warning message includes: optical waveguide magnetic field sensor
Number and fault point generation time.
Due to being provided with multiple optical waveguide magnetic field sensors, the light letter of each optical waveguide magnetic field sensor output in power distribution network
Number corresponding current magnetic field signal usually requires compared with respective history magnetic field signal, if rely on staff check it is each
Whether the corresponding current magnetic field signal of optical waveguide magnetic field sensor is distorted, and is easy to cause and omits fault point, therefore, the application
Embodiment generates fault point warning message after determining fault point, and in a kind of mode in the cards, main website server is first
Page shows fault point warning message, and staff can handle the failure of distribution line in time according to fault point warning message.
Wherein, step 201 is to the specific operation process of step 203 and the specific operation process phase of step 101 to step 103
Together, can cross-reference, details are not described herein again.
Referring to structural schematic diagram shown in Fig. 3, the embodiment of the present application provides a kind of distribution network fault positioning device, the dress
It sets and is applied to main website server, the main website server is connected with optical waveguide magnetic field sensor, the optical waveguide magnetic field sensing
Device is arranged in power distribution network, and described device includes:
Module 100 is obtained, for obtaining optical waveguide magnetic field sensor in the corresponding current magnetic field of optical signal currently exported
Signal；
Judgment module 200 judges described current for the current magnetic field signal to be compared with history magnetic field signal
Whether magnetic field signal is distorted；
Determining module 300, for after the judgment module determines that the current magnetic field signal is distorted, it is determined that
Distribution line where the corresponding optical waveguide magnetic field sensor of the current magnetic field signal is fault point, wherein the history magnetic field
The receiving time of signal is before the receiving time of the current magnetic field signal.
Optionally, described device further include:
Warning message generation module 400, for generating fault point warning message, the fault point warning message includes: light
The number and fault point generation time of waveguide magnetic field sensor.
Referring to structural schematic diagram shown in Fig. 4, the embodiment of the present application provides a kind of Distribution Fault Location System, the system
System includes: main website server 12 and optical waveguide magnetic field sensor 2；The main website server 12 and 2 phase of optical waveguide magnetic field sensor
Connection, the optical waveguide magnetic field sensor 2 are arranged in power distribution network；The main website server 12 includes Fig. 3 offer in the application
Device.
Optionally, the system also includes light supply apparatus, signal processing apparatus and narrow band communication modules 10；
The output end of the light supply apparatus and the input terminal of optical waveguide magnetic field sensor are attached using optical fiber, the light
Source device is for generating the first optical signal, and by first optical signal transmission to optical waveguide magnetic field sensor；
The output end of the optical waveguide magnetic field sensor and the input terminal of the signal processing apparatus are connected using optical fiber
It connects, the optical waveguide magnetic field sensor obtains the second optical signal, and second light is believed for modulating first optical signal
Number it is transmitted to the signal processing apparatus；
The output end of the signal processing apparatus is electrically connected with the input terminal of the narrow band communication module 10, at the signal
Reason device is used to convert the corresponding magnetic field signal of second optical signal for second optical signal, and by the magnetic field signal
It is transmitted to the narrow band communication module 10；
Using wireless communication, the narrow band communication module between the narrow band communication module 10 and the main website server 12
10 for being transmitted to the main website server 12 for the corresponding magnetic field signal of second optical signal.
Referring to structural schematic diagram shown in Fig. 4, the optical waveguide magnetic field sensor 2 is set to cable 1 in distribution line
Outer surface；
The light supply apparatus, signal processing apparatus and narrow band communication module 10 are set to inside positioning case, the positioning case
It is set to electric pole outer surface.
Referring to structural schematic diagram shown in Fig. 4, the light supply apparatus includes: light source module 3, EDFA light amplifier module 4
With light wavelength division multiplexing 5；
The light source module 3 is for generating third optical signal；
The EDFA light amplifier module 4 obtains the 4th optical signal for amplifying the third optical signal；
The light wavelength division multiplexing 5 is used to for the 4th optical signal to be divided into three tunnels, obtains three first optical signals,
And by first optical signal transmission to the optical waveguide magnetic field sensor.
In the embodiment of the present application, it is 1.1-1.6 microns that light source module 3 can provide wavelength for Distribution Fault Location System
Light source, the light source of the wavelength zone has the characteristic of low-loss, low dispersion, so that optical signal transmission stability and essence in system
Exactness is higher.EDFA (Erbium Doped Fiber Amplifier, erbium-doped fiber amplifier) light amplifier module 4 is by light source
The third optical signal that module 3 exports amplifies, to provide enough light energies for system.Since existing distribution line is usual
For three-phase electricity, it is provided with optical waveguide magnetic field sensor 2 in 1 outer surface of cable of every phase electricity, therefore, light wavelength division multiplexing 5 will
4th optical signal is divided into three tunnels, is transmitted separately to the optical waveguide magnetic field sensor 2 of each 1 outer surface of phase cable setting.
Referring to structural schematic diagram shown in Fig. 4, the signal processing apparatus includes: photoelectric conversion module 6, electric signal filtering
Amplification module 7, analog-to-digital conversion module 8 and electronic signal processing module 9；
The photoelectric conversion module 6 is used to convert the first electric signal for second optical signal；
The electric signal filter and amplification module 7 is used to for first electric signal to be filtered enhanced processing, obtains second
Electric signal；
The analog-to-digital conversion module 8 is used to second electric signal being converted to digital electric signal；
The electronic signal processing module 9 is for handling the digital electric signal, so that it is corresponding to obtain second optical signal
Magnetic field signal.
In the embodiment of the present application, since phase electricity every in three-phase electricity respectively corresponds an optical waveguide magnetic field sensor 2, three light
Waveguide magnetic field sensor 2 exports the second optical signal all the way respectively, and tri- the second optical signal of tunnel of Xian Jiang is coupled as all the way, then turns through photoelectricity
It changes the mold block 6 and carries out photoelectric conversion, therefore, system final output described herein current magnetic field signal all the way.
Referring to structural schematic diagram shown in Fig. 4, the system also includes: solar cell module 11；
The solar cell module 11 is set to the positioning case outer surface, the solar cell module 11 respectively with
The light source module 3, EDFA light amplifier module 4, photoelectric conversion module 6, electronic signal processing module 9 and narrow band communication module 10
Electrical connection；
The solar cell module 11 is the light source die for converting solar energy into electrical energy, and using the electric energy
Block 3, EDFA light amplifier module 4, photoelectric conversion module 6, electronic signal processing module 9 and narrow band communication module 10 are powered.
Same and similar part may refer to each other between each embodiment in this specification.Implement especially for device
For example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring in embodiment of the method
Explanation.
Combine detailed description and exemplary example that the application is described in detail above, but these explanations are simultaneously
It should not be understood as the limitation to the application.It will be appreciated by those skilled in the art that without departing from the application spirit and scope,
A variety of equivalent substitution, modification or improvements can be carried out to technical scheme and embodiments thereof, these each fall within the application
In the range of.The protection scope of the application is determined by the appended claims.
Claims (10)
1. a kind of electrical power distribution network fault location method, which is characterized in that the method is applied to main website server, the main website service
Device is connected with optical waveguide magnetic field sensor, and the outer surface of cable in distribution line is arranged in the optical waveguide magnetic field sensor,
The described method includes:
Obtain the corresponding current magnetic field signal of optical signal that optical waveguide magnetic field sensor exports at current time；
The current magnetic field signal is compared with history magnetic field signal, it is abnormal to judge whether the current magnetic field signal occurs
Become；
If the current magnetic field signal is distorted, it is determined that the corresponding optical waveguide magnetic field sensor institute of the current magnetic field signal
It is fault point in distribution line, wherein the receiving time of the history magnetic field signal is in the reception of the current magnetic field signal
Between before.
2. the method according to claim 1, wherein determining the corresponding optical waveguide magnetic field biography of the magnetic field signal
Distribution line where sensor is after fault point, further includes:
Fault point warning message is generated, the fault point warning message includes: number and the fault point of optical waveguide magnetic field sensor
Generation time.
3. a kind of distribution network fault positioning device, which is characterized in that described device is applied to main website server, the main website service
Device is connected with optical waveguide magnetic field sensor, and the optical waveguide magnetic field sensor is arranged in power distribution network, and described device includes:
Module is obtained, for obtaining optical waveguide magnetic field sensor in the corresponding current magnetic field signal of optical signal currently exported；
Judgment module judges the current magnetic field letter for the current magnetic field signal to be compared with history magnetic field signal
Number whether it is distorted；
Determining module, for after the judgment module determines that the current magnetic field signal is distorted, it is determined that described to work as
Distribution line where the corresponding optical waveguide magnetic field sensor of preceding magnetic field signal is fault point, wherein the history magnetic field signal
Receiving time is before the receiving time of the current magnetic field signal.
4. device according to claim 3, which is characterized in that described device further include:
Warning message generation module, for generating fault point warning message, the fault point warning message includes: optical waveguide magnetic field
The number and fault point generation time of sensor.
5. a kind of Distribution Fault Location System, which is characterized in that the system comprises: main website server and optical waveguide magnetic field pass
Sensor；
The main website server is connected with optical waveguide magnetic field sensor, and the optical waveguide magnetic field sensor is arranged in power distribution network
In；
The main website server includes device described in claim 3 or 4.
6. system according to claim 5, which is characterized in that the system also includes: light supply apparatus, signal processing apparatus
With narrow band communication module；
The output end of the light supply apparatus and the input terminal of optical waveguide magnetic field sensor are attached using optical fiber, the light source dress
It sets for generating the first optical signal, and by first optical signal transmission to optical waveguide magnetic field sensor；
The input terminal of the output end and the signal processing apparatus of the optical waveguide magnetic field sensor is attached using optical fiber, institute
Optical waveguide magnetic field sensor is stated for modulating first optical signal, obtains the second optical signal, and second optical signal is passed
Transport to the signal processing apparatus；
The output end of the signal processing apparatus is electrically connected with the input terminal of the narrow band communication module, the signal processing apparatus
For converting the corresponding magnetic field signal of second optical signal for second optical signal, and the magnetic field signal is transmitted to
The narrow band communication module；
Using wireless communication between the narrow band communication module and the main website server, the narrow band communication module is used for institute
It states the corresponding magnetic field signal of second optical signal and is transmitted to the main website server.
7. system according to claim 6, which is characterized in that the optical waveguide magnetic field sensor is set in distribution line
The outer surface of cable；
The light supply apparatus, signal processing apparatus and narrow band communication module are set to inside positioning case, and the positioning case is set to
Electric pole outer surface.
8. system according to claim 6, which is characterized in that the light supply apparatus includes: light source module, EDFA light amplification
Device module and light wavelength division multiplexing；
The light source module is for generating third optical signal；
The EDFA light amplifier module obtains the 4th optical signal for amplifying the third optical signal；
The light wavelength division multiplexing is used to for the 4th optical signal to be divided into three tunnels, obtains three first optical signals, and will
First optical signal transmission is to the optical waveguide magnetic field sensor.
9. system according to claim 6, which is characterized in that the signal processing apparatus includes: photoelectric conversion module, electricity
Signal filter and amplification module, analog-to-digital conversion module and electronic signal processing module；
The photoelectric conversion module is used to convert the first electric signal for second optical signal；
The electric signal filter and amplification module is used to for first electric signal to be filtered enhanced processing, obtains the second telecommunications
Number；
The analog-to-digital conversion module is used to second electric signal being converted to digital electric signal；
The electronic signal processing module is for handling the digital electric signal, to obtain the corresponding magnetic field of second optical signal
Signal.
10. system according to claim 7, which is characterized in that the system also includes: solar cell module；
The solar cell module is set to the positioning case outer surface, the solar cell module respectively with the light source
Module, EDFA light amplifier module, photoelectric conversion module, electronic signal processing module and the electrical connection of narrow band communication module；
The solar cell module for converting solar energy into electrical energy, and using the electric energy be the light source module,
EDFA light amplifier module, photoelectric conversion module, electronic signal processing module and narrow band communication module for power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003109.5A CN109188199A (en) | 2018-08-30 | 2018-08-30 | A kind of electrical power distribution network fault location method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003109.5A CN109188199A (en) | 2018-08-30 | 2018-08-30 | A kind of electrical power distribution network fault location method, device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109188199A true CN109188199A (en) | 2019-01-11 |
Family
ID=64917459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811003109.5A Pending CN109188199A (en) | 2018-08-30 | 2018-08-30 | A kind of electrical power distribution network fault location method, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109188199A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113625125A (en) * | 2021-09-24 | 2021-11-09 | 南方电网科学研究院有限责任公司 | High-resistance ground fault detection method, device and equipment for power distribution network |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277847A (en) * | 2014-06-20 | 2016-01-27 | 江苏省电力公司扬州供电公司 | Fault positioning system |
| CN107390146A (en) * | 2017-07-11 | 2017-11-24 | 昆明理工大学 | A kind of integrated light guide magnetic field measurement system and method |
-
2018
- 2018-08-30 CN CN201811003109.5A patent/CN109188199A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277847A (en) * | 2014-06-20 | 2016-01-27 | 江苏省电力公司扬州供电公司 | Fault positioning system |
| CN107390146A (en) * | 2017-07-11 | 2017-11-24 | 昆明理工大学 | A kind of integrated light guide magnetic field measurement system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113625125A (en) * | 2021-09-24 | 2021-11-09 | 南方电网科学研究院有限责任公司 | High-resistance ground fault detection method, device and equipment for power distribution network |
| CN113625125B (en) * | 2021-09-24 | 2023-11-21 | 南方电网科学研究院有限责任公司 | High-resistance ground fault detection method, device and equipment for power distribution network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203163769U (en) | Overhead line safety monitoring system based on distributed fiber sensors | |
| US20110285399A1 (en) | Device, system and method for monitoring lines of grounding electrodes | |
| CN106452568A (en) | OSC (Optical Supervising Channel) optical module with OTDR (Optical Time Domain Reflectometer)) function and method for realizing real-time and interruption service detection thereof | |
| EP0136271B1 (en) | Apparatus for detecting tapping of light energy from an optical fiber | |
| CN206164535U (en) | OSC optical module with OTDR function | |
| CN205002952U (en) | Testing arrangement of two -way loss of optic fibre with pronunciation communication function | |
| CN109188199A (en) | A kind of electrical power distribution network fault location method, device and system | |
| CN102081121A (en) | Wireless high voltage phase checking device | |
| CN104596632A (en) | Distributed optical fiber vibration sensor for enhancing long-distance detection, and method of distributed optical fiber vibration sensor | |
| US11668590B2 (en) | System and method for fiber sensing | |
| CN111121873A (en) | Distributed optical fiber sensing device | |
| CN104270197A (en) | Transmission system and method for transmitting wide frequency band simulating radio frequency signals through optical transmission media | |
| JPH10162280A (en) | Power transmission line monitor system | |
| CN204286753U (en) | Far-end speech optical cable identifier | |
| CN103868673A (en) | Optical fiber Raman scattering effect-based optical cable identification and positioning method and equipment | |
| CN204740078U (en) | Composite fiber -optic overhead ground wi distributing type icing on -line monitoring system | |
| CN209327617U (en) | A kind of optical series identifying system and cable splice closure based on jumping fiber | |
| CN111817791B (en) | Quantum remote state transfer device for improving communication safety of power system | |
| CN206595998U (en) | Optical fiber real-time monitoring remote control data Transmission system | |
| JPS59142479A (en) | Transmission line monitoring method | |
| CN103162860A (en) | Optical fiber temperature measurement system of high voltage distribution cabinet | |
| JPS59136664A (en) | Monitoring method of transmission line | |
| CN204925316U (en) | Localization of fault and monitoring devices of transmission line shorted to earth | |
| CN105606870A (en) | Wavelength division multiplexing type non-contact online voltage monitoring system for power transmission line | |
| CN205105217U (en) | Passive optical network on -line monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190111 |
|
| WD01 | Invention patent application deemed withdrawn after publication |