CN106124925A - The distance-finding method of transmission line malfunction and device and locating verification method and system - Google Patents
The distance-finding method of transmission line malfunction and device and locating verification method and system Download PDFInfo
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- CN106124925A CN106124925A CN201610412545.2A CN201610412545A CN106124925A CN 106124925 A CN106124925 A CN 106124925A CN 201610412545 A CN201610412545 A CN 201610412545A CN 106124925 A CN106124925 A CN 106124925A
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- optical signal
- transmission line
- distance
- moment value
- line malfunction
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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
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
Abstract
The present invention relates to the distance-finding method of a kind of transmission line malfunction and device and locating verification method and system, it mainly uses the mode of both-end correlation optical signal, and according to one end receive in the first optical signal adjust the first moment value of waveform and the other end receives the second moment value of the modulation waveform in the second optical signal, first optical signal and the spread speed of the second optical signal, and the transmission channel length of optical signal obtains the distance of trouble point and the first monitoring machine.In the present invention, owing to employing both-end correlation, no matter so which position that trouble point is between both-end, one end only receives a modulation waveform, before and after's signal can be solved and overlap, by occurring, the problem causing before and after's signal identification difficult, improve the accuracy of range finding, and do not limited by system equipment spatial resolution, not affected by ambient temperature, its practicality is higher with feasibility.
Description
Technical field
The present invention relates to transmission line of electricity technical field, particularly relate to distance-finding method and the device of a kind of transmission line malfunction
And locating verification method and system.
Background technology
China's transmission line of electricity short circuit tripping fault rate remains high always, brings serious to power grid security reliability service
Potential safety hazard.In order to tackle short circuit accident, transmission line of electricity is run the impact caused, it is necessary to transmission line short-circuit fault thing
Part real-time positioning is monitored, for offer foundation of fixing a breakdown in time.
The fault distance-finding method of transmission line of electricity is a lot, can be divided into impedance method and traveling wave method two class.At present, commonly used row ripple
Method carries out bigness scale to cable fault, and with open circuit fault, low-resistance is used Low Voltage Impulse Method；High resistant and flashover fault are used arteries and veins
Rush current method.In addition to above-mentioned traveling wave method and impedance method, also utilize distributing optical fiber sensing to the method carrying out fault location,
Existing method includes: method based on trouble point variations in temperature location, the polarization state change caused based on current in the fault point
The method that (i.e. Faraday effect) positions.
For distributing optical fiber sensing trouble point temperature location determination method by BOTDR (Brillouin scattering) and DTS (distribution
Formula optical fiber temperature measurement system) spatial resolution, trouble point temperature pattern and ambient temperature change impact, in fact
The feasibility of border operation is substantially reduced, and limits its actual application.
For distributing optical fiber sensing Faraday effect location determination method, it is based on Faraday effect, by fault electricity
Two optical fiber (being in together in an OPGW) that the optical signal (polarization state) of stream modulation connects through ring, successively arrive monitoring and set
Standby, the time difference according to successively arriving can obtain trouble point distance；If detection optical signal duration is long or fault occurs leaning on
Nearly two fiber optic loop meet place, and front and back generation is overlapped by signal, cause before and after's signal identification difficulty.
Summary of the invention
Based on this, it is necessary to for the existing method feasibility by Distributed Optical Fiber Sensing Techniques location fault relatively
Low, the problem of signal identification difficulty during location, it is provided that the distance-finding method of a kind of transmission line malfunction and device and locating verification
Method and system.
The distance-finding method of a kind of transmission line malfunction, is applied to the first monitoring machine, comprises the following steps:
Persistently launch the first optical signal by transmission channel to the second monitoring machine, and it is logical by transmission to receive the second monitoring machine
The second optical signal that road is persistently launched；
Obtaining the first moment value, the first moment value is that the second monitoring machine monitors appearance in the first received optical signal
The moment value of modulation waveform；
Whether the second optical signal that monitoring receives there is modulation waveform, if occurring, obtaining the second moment value, when second
Quarter, value was the moment value monitored and occur modulation waveform in the second optical signal received；
Wherein, the modulation waveform in the first optical signal and the modulation waveform in the second optical signal are when transmission line of electricity occurs event
During barrier, fault point generates pulse voltage, and the first optical signal and the second optical signal are produced by pulsed-voltage control simultaneously；
Logical according to the first moment value, the second moment value, the first optical signal and the spread speed of the second optical signal and transmission
The length in road obtains the distance of trouble point and the first monitoring machine.
The range unit of a kind of transmission line malfunction, is applied to the first monitoring machine, and range unit includes with lower unit:
Transmitter unit, for persistently launching the first optical signal by transmission channel to the second monitoring machine；
Receive unit, for receiving the second optical signal that the second monitoring machine is persistently launched by transmission channel；
First acquiring unit, for obtaining the first moment value, the first moment value is received by the second monitoring machine monitors
The first optical signal in the moment value of modulation waveform occurs；
Whether monitoring acquiring unit, there is modulation waveform in the second optical signal that monitoring receives, if occurring, obtains
Second moment value, the second moment value is the moment value occurring modulation waveform in the second optical signal that monitoring receives；
Wherein, the modulation waveform in the first optical signal and the modulation waveform in the second optical signal are when transmission line of electricity occurs event
During barrier, fault point generates pulse voltage, and the first optical signal and the second optical signal are produced by pulsed-voltage control simultaneously；
Data processing unit, for according to the first moment value, the second moment value, the first optical signal and the biography of the second optical signal
The length broadcasting speed and transmission channel obtains the distance of trouble point and the first monitoring machine.
The distance-finding method of the transmission line malfunction according to the invention described above and device, it is to use both-end correlation optical signal
Mode, and according to one end receive in the first optical signal adjust the first moment value of waveform and the other end receives the second light letter
Second moment value of the modulation waveform in number, the first optical signal and the spread speed of the second optical signal, and the transmission of optical signal
Passage length obtains the distance of trouble point and the first monitoring machine.In the present invention, owing to employing both-end correlation, no matter so
Which position between both-end, the trouble point, one end only receives a modulation waveform, it is possible to resolve distributing optical fiber sensing faraday
Owing to detection optical signal duration is long or fault occurs meeting place, front and back near two fiber optic loop in effect location determination method
Signal, by there is the overlapping problem causing before and after's signal identification difficulty, improves the accuracy of range finding, and relative to distributed
Fibre Optical Sensor trouble point temperature localization method, the present invention is not limited by system equipment spatial resolution, the most not by surrounding
The impact of temperature, its practicality is higher with feasibility.
A kind of locating verification method of transmission line malfunction, comprises the following steps:
Fault Recorder Information according to transformer station obtains transmission line malfunction information；
Judge whether transmission line malfunction is cable insulation fault according to transmission line malfunction information, the most then according to upper
The anticipation position of the distance localization of faults obtained by the distance-finding method of the transmission line malfunction stated；
Obtain fault line walking record, according to fault line walking record checking anticipation position whether with the position phase of actual fault point
Symbol, if, it is determined that anticipation position is the physical location of trouble point.
The locating verification system of a kind of transmission line malfunction, including the range unit of above-mentioned transmission line malfunction and following
Unit:
Second acquisition unit, obtains transmission line malfunction information according to the Fault Recorder Information of transformer station；
Judging unit, for judging whether transmission line malfunction is cable insulation fault according to transmission line malfunction information,
The anticipation position of the distance localization of faults the most then obtained according to the range unit of above-mentioned transmission line malfunction；
Authentication unit, is used for obtaining fault line walking record, according to fault line walking record checking anticipation position whether with reality
The position of trouble point is consistent, if, it is determined that anticipation position is the physical location of trouble point.
The locating verification method and system of the transmission line malfunction according to the invention described above, it is the fault according to transformer station
The type of transmission line malfunction is judged by the transmission line malfunction information in wave-record chart, is being defined as cable insulation fault
Time, use the mode of both-end correlation optical signal, and the first optical signal being respectively received according to both-end adjust the first of waveform
Second moment value of the modulation waveform of moment value and the second optical signal, the first optical signal and the spread speed of the second optical signal, with
And the transmission channel length of optical signal obtains the distance of trouble point and the first optical signal launch position, and to according to gained distance
The anticipation position of the trouble point determined is verified.In actual applications, the distance-finding method of transmission line malfunction is often at cable
The scene of insulation fault uses, in order to avoid causing, because of irresistible factor, misalignment of finding range, to the distance obtained according to range finding
The position of location is verified, is further ensured that the accuracy of range finding.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the distance-finding method of the transmission line malfunction of one of them embodiment；
Fig. 2 (a) be the transmission line malfunction of one of them embodiment distance-finding method in optical signal move towards sketch；
Fig. 2 (b) be the transmission line malfunction of one of them embodiment distance-finding method in slave receive modulation waveform
Moment schematic diagram；
Fig. 3 is the schematic flow sheet of the locating verification method of the transmission line malfunction of one of them embodiment；
Fig. 4 is the structural representation of the range unit of the transmission line malfunction of one of them embodiment；
Fig. 5 is the structural representation of the range unit of the transmission line malfunction of one of them embodiment；
Fig. 6 is the structural representation of the locating verification system of the transmission line malfunction of one of them embodiment；
Fig. 7 is the actual installation structural representation of the locating verification system of the transmission line malfunction of one of them embodiment.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, to this
Invention is described in further detail.Should be appreciated that detailed description of the invention described herein only in order to explain the present invention,
Do not limit protection scope of the present invention.
Shown in Figure 1, for the schematic flow sheet of the distance-finding method of transmission line malfunction in one embodiment of the invention.Should
The distance-finding method of the transmission line malfunction in embodiment, is applied to the first monitoring machine, comprises the following steps:
Step S101: persistently launch the first optical signal by transmission channel to the second monitoring machine, and receive the second monitoring machine
The second optical signal persistently launched by transmission channel；
In this step, the first optical signal and the second optical signal can transmit, due to the first light in same transmission channel
The transmission direction of signal and the second optical signal is contrary, and in same transmission channel, the identification of modulation waveform will not be produced by transmission
Raw impact.
Step S102: obtain the first moment value, the first moment value is that the second monitoring machine monitors the first received light
Signal occurs the moment value of modulation waveform；
In this step, there is the moment value of modulation waveform in the second monitoring machine in monitoring the first received optical signal
Can send to the first monitoring machine.
Step S103: whether modulation waveform occur in the second optical signal that monitoring receives, if occurring, obtained for the second moment
Value, the second moment value is the moment value occurring modulation waveform in the second optical signal that monitoring receives；
In step S102 and S103, the modulation waveform in the first optical signal and the modulation waveform in the second optical signal are to work as
When transmission line of electricity breaks down, fault point generates pulse voltage, and the first optical signal and the second optical signal are simultaneously by pulse voltage
Modulate and produce；
When transmission line of electricity breaks down, fault point generates pulse voltage, and pulse voltage can produce corresponding magnetic field, root
According to magneto-optic effect, thus it is possible to vary the angle of polarization of optical signal, i.e. optical signal is modulated.
Step S104: according to the spread speed of the first moment value, the second moment value, the first optical signal and the second optical signal with
And the length of transmission channel obtains the distance of trouble point and the first monitoring machine.
In the present embodiment, it is the mode using both-end correlation optical signal, and first be respectively received according to both-end
Second moment value of the modulation waveform adjusting the first moment value of waveform and the second optical signal of optical signal, the first optical signal and the
The spread speed of two optical signals, and the transmission channel length of optical signal obtains trouble point and the first optical signal launch position
Distance.Owing to employing both-end correlation, no matter so which position between both-end, the trouble point, one end only receives a modulation
Waveform, it is possible to resolve in distributing optical fiber sensing Faraday effect location determination method due to detection optical signal duration long or
Fault occurs meeting place near two fiber optic loop, and front and back signal is by occurring the overlapping problem causing before and after's signal identification difficulty, improves
The accuracy of range finding, and relative to distributing optical fiber sensing trouble point temperature localization method, this programme is not by system equipment
The restriction of spatial resolution, is not affected by ambient temperature, and its practicality is higher with feasibility.
Wherein in an embodiment, in the step persistently being launched the first optical signal by transmission channel to the second monitoring machine
Before, further comprising the steps of:
First monitoring machine and the second monitoring machine are carried out time calibration.
In the present embodiment, the first monitoring machine and the second monitoring machine are carried out time calibration, the first monitoring machine can be synchronized
With the time of the second monitoring machine, the first moment value of reduction acquisition and the error of the second moment value, make range finding more accurate.
Wherein in an embodiment, the frequency of the first optical signal and the second optical signal is different.
In the present embodiment, the frequency of the first optical signal and the second optical signal is different, is easier in same transmission channel
Distinguish the first optical signal and the second optical signal.
Wherein in an embodiment, transmission channel is optical fiber, and optical fiber is laid parallel with power cable line.
In the present embodiment, optical signal transmits in a fiber and is not susceptible to distortion, deformation, and it is the least to decay, transmission
Speed is held essentially constant, and does not affect the due in of modulation waveform, it is ensured that range accuracy.It addition, optical fiber and power cable
Road is laid parallel, and the pulse voltage that transmission line malfunction produces there's almost no delay issue to the modulated process of optical signal.Light
Fibre can be OPGW optical fiber (OPGW), ADSS optical fiber (All Dielectric self-support), (optical fiber is multiple for OPPC optical fiber
Close phase line) etc. in any one.
Wherein in an embodiment, according to D=, (L-v × Δ t)/2 obtain trouble point and the first optical signal launch position
Distance, wherein, D represents the distance of trouble point and the first monitoring machine, and L represents the transmission channel at the first default optical signal place
Length, v represents the first optical signal and the transmission speed of the second optical signal, the transmission speed phase of the first optical signal and the second optical signal
With, Δ t represents the first moment value and the time difference of the second moment value.
In the present embodiment, according to formula D=, (L-v × Δ t)/2 can obtain trouble point and the first monitoring machine easily
Distance.
In a specific embodiment, the distance-finding method of transmission line malfunction uses slave (the first monitoring machine and the
Two monitoring machines) to the mode to transmitting optical signal, respectively slave device is arranged on principal and subordinate's transformer substation communication machine room, utilizes line
Road OPGW optical fiber receives, as sensor, the audio frequency vibration signal that pulse voltage impact produces, and generates modulation waveform, connect after modulation
After entering device, the information to modulation waveform processes, and device controls data collecting card Real-time Collection modulation waveform data, and right
The data gathered are analyzed processing and can extract the due in of modulation waveform and calculate the exact position of transmission line malfunction,
Shown in positioning principle such as Fig. 2 (a).
The distance-finding method of transmission line malfunction uses an optical fiber in OPGW to receive trouble back tone frequency vibration signal, does not exists
Return the situation penetrating phenomenon with impedance mismatch, the problem that the anti-ripple identification difficulty of TRAVELING WAVE FAULT LOCATION can be overcome, pulse voltage
The audio frequency vibration that impact produces changes the optical signal of two reverse transfer, and the frequency of the optical signal of the two reverse transfer is different,
Do not interfere with each other, there is not incidence wave and echo overlapping phenomenon, can solve signal overlap before and after TRAVELING WAVE FAULT LOCATION and
The blind zone problem caused.Optical signal decay in transmitting procedure after being modulated by trouble back tone frequency vibration is little, signal be disturbed little,
Waveform change is little, has substantially no effect on modulation waveform due in, it is ensured that range accuracy.The optical signal line width of two reverse transfer,
And optical fiber transmission medium is uniform, it is possible to ensure the signaling rate that determines, velocity of wave can be solved in TRAVELING WAVE FAULT LOCATION not
The problem determined.When trouble back tone frequency vibration is to optical signal modulation, polarization state is almost transient response, and the sampling of monitoring device
Rate reaches more than several megahertzs, and machine system can effectively solve the problem that the dynamic time delay problem of existing TRAVELING WAVE FAULT LOCATION.
Additionally, fault positioning method for transmission line monitors the modulation waveform that caused by audio frequency vibration signal, not Existential Space resolution
Problem, practical.Compared to distributing optical fiber sensing Faraday effect localization method, the measuring distance of transmission line fault of the present invention
The situation that before and after method, signal will not overlap, the problem overcoming check frequency and the difficulty of signal identification front and back.
Two optical signals are received by slave respectively and determine the fluctuation moment, and as shown in Fig. 2 (b), record slave receives
The time difference Δ t=t1-t2 of modulation waveform, it is known that total length L of optical fiber and optical signal spread speed v in a fiber, then fault
Point is exactly D=(L-v × Δ t)/2 to distance D of main monitoring machine end.
According to the distance-finding method of above-mentioned transmission line malfunction, the present invention also provides for the locating verification of a kind of transmission line malfunction
Method, the embodiment with regard to the locating verification method of the transmission line malfunction of the present invention is described in detail below.
Shown in Figure 3, for the flow process signal of the locating verification method of transmission line malfunction in one embodiment of the invention
Figure.The locating verification method of the transmission line malfunction in this embodiment comprises the following steps:
Step S201: obtain transmission line malfunction information according to the Fault Recorder Information of transformer station；
Step S202: judge whether transmission line malfunction is cable insulation fault according to transmission line malfunction information, if so,
Then according to the anticipation position of the distance localization of faults obtained by the distance-finding method of above-mentioned transmission line malfunction；
Step S203: obtain fault line walking record, according to fault line walking record checking anticipation position whether with physical fault
The position of point is consistent, if, it is determined that anticipation position is the physical location of trouble point.
In the present embodiment, according to the transmission line malfunction information in the Fault Recorder Information of transformer station to transmission line of electricity event
The type of barrier judges, when being defined as cable insulation fault, uses the mode of both-end correlation optical signal, and divides according to both-end
First moment value adjusting waveform of the first optical signal not received and the second moment value of the modulation waveform of the second optical signal,
First optical signal and the spread speed of the second optical signal, and the transmission channel length of optical signal obtains trouble point and the first light
Signal launches the distance of position, and verifies the anticipation position of the trouble point determined according to gained distance.Apply in reality
In, the distance-finding method of transmission line malfunction often in the scene of cable insulation fault use, in order to avoid because of irresistible because of
Element causes misalignment of finding range, and verifies the position of the Distance positioning obtained according to range finding, is further ensured that the accuracy of range finding.
According to the distance-finding method of above-mentioned transmission line malfunction, the present invention also provides for the range finding dress of a kind of transmission line malfunction
Putting, the embodiment with regard to the range unit of the transmission line malfunction of the present invention is described in detail below.
Shown in Figure 4, for the structural representation of the range unit of transmission line malfunction in one embodiment of the invention.Should
The range unit of the transmission line malfunction in embodiment is applied to the first monitoring machine, including with lower unit:
Transmitter unit 310, for persistently launching the first optical signal by transmission channel to the second monitoring machine；
Receive unit 320, for receiving the second optical signal that the second monitoring machine is persistently launched by transmission channel；
First acquiring unit 330, for obtaining the first moment value, the first moment value is that the second monitoring machine monitors and received
To the first optical signal in the moment value of modulation waveform occurs；
Whether monitoring acquiring unit 340, there is modulation waveform in the second optical signal that monitoring receives, if occurring,
Obtaining the second moment value, the second moment value is the moment value occurring modulation waveform in the second optical signal that monitoring receives；
Wherein, the modulation waveform in the first optical signal and the modulation waveform in the second optical signal are when transmission line of electricity occurs event
During barrier, fault point generates pulse voltage, and the first optical signal and the second optical signal are produced by pulsed-voltage control simultaneously；
Data processing unit 350, for according to the first moment value, the second moment value, the first optical signal and the second optical signal
Spread speed and the length of transmission channel obtain the distance of trouble point and the first monitoring machine.
Wherein in an embodiment, as it is shown in figure 5, the range unit of transmission line malfunction also includes alignment unit 360,
For the first monitoring machine and the second monitoring machine are carried out time calibration.
Wherein in an embodiment, according to D=, (L-v × Δ t)/2 obtain trouble point and first to data processing unit 350
The distance of monitoring machine, wherein, D represents the distance of trouble point and the first monitoring machine, and L represents the length of the first transmission channel, and v represents
First optical signal and the transmission speed of the second optical signal, the transmission speed of the first optical signal and the second optical signal is identical, and Δ t represents
First moment value and the time difference of the second moment value.
The distance-finding method of the range unit of the transmission line malfunction of the present invention and the transmission line malfunction of the present invention one a pair
Should, technical characteristic and beneficial effect thereof that the embodiment at the distance-finding method of above-mentioned transmission line malfunction illustrates all are applicable to transmission of electricity
In the embodiment of the range unit of line fault.
Locating verification method according to above-mentioned transmission line malfunction, the present invention also provides for the location of a kind of transmission line malfunction
Checking system, the embodiment with regard to the locating verification system of the transmission line malfunction of the present invention is described in detail below.
Shown in Figure 6, for the structural representation of the locating verification system of transmission line malfunction in one embodiment of the invention
Figure.The locating verification system of the transmission line malfunction in this embodiment include above-mentioned transmission line malfunction range unit and with
Lower unit:
Second acquisition unit 410, obtains transmission line malfunction information according to the Fault Recorder Information of transformer station；
According to transmission line malfunction information, judging unit 420, for judging whether transmission line malfunction is cable insulation event
Barrier, the most then the anticipation position of the distance localization of faults obtained according to the range unit of above-mentioned transmission line malfunction；
Authentication unit 430, is used for obtaining fault line walking record, according to fault line walking record checking anticipation position whether with reality
The position of trouble point, border is consistent, if, it is determined that anticipation position is the physical location of trouble point.
In the present embodiment, according to the transmission line malfunction information in the Fault Recorder Information of transformer station to transmission line of electricity event
The type of barrier judges, when being defined as cable insulation fault, uses the mode of both-end correlation optical signal, and divides according to both-end
First moment value adjusting waveform of the first optical signal not received and the second moment value of the modulation waveform of the second optical signal,
First optical signal and the spread speed of the second optical signal, and the transmission channel length of optical signal obtains trouble point and the first light
Signal launches the distance of position, and verifies the anticipation position of the trouble point determined according to gained distance.Apply in reality
In, the distance-finding method of transmission line malfunction often in the scene of cable insulation fault use, in order to avoid because of irresistible because of
Element causes misalignment of finding range, and verifies the position of the Distance positioning obtained according to range finding, is further ensured that the accuracy of range finding.
In a specific embodiment, as it is shown in fig. 7, the locating verification system of transmission line malfunction is arranged on transformer station
Communications equipment room, the intrasystem LASER Light Source (2,4, a 6) optical fiber (9) in OPGW is connected to the wavelength-division multiplex meter of opposite end
(1) after, then connect respectively opposite end capture card (3), pair time card (5) and address card (7), finally signal is sent into industrial computer (8) and makees
Fault localization processes.Locating verification system is contained in industry control cabinet (10).
Industrial computer in the locating verification system of transmission line malfunction discriminates whether according to the data gathered and algorithm model
For cable insulation fault type, calculate fault exact position according to location algorithm and combine GIS, GPS and transmission line of electricity machine account letter
Breath display abort situation.
In the present invention, the ordinal number such as " first ", " second " is intended merely to make a distinction involved object, is not
Object itself is defined.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that, come for those of ordinary skill in the art
Saying, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the distance-finding method of a transmission line malfunction, it is characterised in that described distance-finding method is applied to the first monitoring machine, described
Distance-finding method comprises the following steps:
Persistently launch the first optical signal by transmission channel to the second monitoring machine, and receive described second monitoring machine by described biography
The second optical signal that defeated passage is persistently launched；
Obtaining the first moment value, described first moment value is that described second monitoring machine monitors in the first received optical signal
The moment value of modulation waveform occurs；
Whether the second optical signal received described in monitoring there is modulation waveform, if occurring, obtaining the second moment value, described the
Two moment value are the moment value occurring modulation waveform in the second optical signal received described in monitoring；
Wherein, the modulation waveform in described first optical signal and the modulation waveform in described second optical signal are when transmission line of electricity is sent out
During raw fault, fault point generates pulse voltage, and described first optical signal and described second optical signal are simultaneously by described pulse electricity
Pressure is modulated and is produced；
Propagation speed according to described first moment value, described second moment value, described first optical signal and described second optical signal
The length of degree and described transmission channel obtains the distance of described trouble point and described first monitoring machine.
The distance-finding method of transmission line malfunction the most according to claim 1, it is characterised in that pass through transmission channel described
Before the second monitoring machine persistently launches the step of the first optical signal, further comprising the steps of:
Described first monitoring machine and described second monitoring machine are carried out time calibration.
The distance-finding method of transmission line malfunction the most according to claim 1, it is characterised in that described first optical signal and institute
The frequency stating the second optical signal is different.
The distance-finding method of transmission line malfunction the most according to claim 1, it is characterised in that described transmission channel is light
Fibre, described optical fiber is laid parallel with power cable line.
The distance-finding method of transmission line malfunction the most as claimed in any of claims 1 to 4, it is characterised in that according to D
=(L-v × described trouble point of acquisition, Δ t)/2 and the distance of described first monitoring machine, wherein, D represents that described trouble point is with described
The distance of the first monitoring machine, L represents the length of described first transmission channel, and v represents described first optical signal and described second light
The transmission speed of signal, described first optical signal is identical with the transmission speed of described second optical signal, when Δ t represents described first
It is worth quarter and the time difference of described second moment value.
6. the locating verification method of a transmission line malfunction, it is characterised in that comprise the following steps:
Fault Recorder Information according to transformer station obtains transmission line malfunction information；
Judge whether transmission line malfunction is cable insulation fault according to described transmission line malfunction information, the most then according to power
Profit requires that the distance obtained by the distance-finding method of the transmission line malfunction in 1 to 5 described in any one determines described trouble point
Anticipation position；
Obtain fault line walking record, according to described fault line walking record verify described anticipation position whether with the position of actual fault point
Put and be consistent, if, it is determined that described anticipation position is the physical location of described trouble point.
7. the range unit of a transmission line malfunction, it is characterised in that described range unit is applied to the first monitoring machine, described
Range unit includes with lower unit:
Transmitter unit, for persistently launching the first optical signal by transmission channel to the second monitoring machine；
Receive unit, for receiving the second optical signal that described second monitoring machine is persistently launched by described transmission channel；
First acquiring unit, for obtaining the first moment value, described first moment value is that described second monitoring machine monitors and connect
The first optical signal received occurs the moment value of modulation waveform；
Whether monitoring acquiring unit, there is modulation waveform in the second optical signal received described in monitoring, if occurring, obtains
Second moment value, described second moment value is the moment value occurring modulation waveform in the second optical signal received described in monitoring；
Wherein, the modulation waveform in described first optical signal and the modulation waveform in described second optical signal are when transmission line of electricity is sent out
During raw fault, fault point generates pulse voltage, and described first optical signal and described second optical signal are simultaneously by described pulse electricity
Pressure is modulated and is produced；
Data processing unit, for according to described first moment value, described second moment value, described first optical signal and described the
The spread speed of two optical signals and the length of described transmission channel obtain the distance of described trouble point and described first monitoring machine.
The range unit of transmission line malfunction the most according to claim 7, it is characterised in that also include alignment unit, uses
In described first monitoring machine and described second monitoring machine are carried out time calibration.
9. according to the distance-finding method of the transmission line malfunction described in claim 7 or 8, it is characterised in that described data process single
According to D=, (L-v × described trouble point of acquisition, Δ t)/2 and the distance of described first monitoring machine, wherein, D represents described fault in unit
Putting the distance with described first monitoring machine, L represents that the length of described first transmission channel, v represent described first optical signal and institute
Stating the transmission speed of the second optical signal, described first optical signal is identical with the transmission speed of described second optical signal, and Δ t represents institute
State the first moment value and the time difference of described second moment value.
10. the locating verification system of a transmission line malfunction, it is characterised in that include such as any one in claim 7 to 9
The range unit of described transmission line malfunction and with lower unit:
Second acquisition unit, obtains transmission line malfunction information according to the Fault Recorder Information of transformer station；
Judging unit, for judging whether transmission line malfunction is cable insulation fault according to described transmission line malfunction information,
The distance the most then obtained according to the range unit of the transmission line malfunction described in any one in claim 7 to 9 determines institute
State the anticipation position of trouble point；
Authentication unit, is used for obtaining fault line walking record, according to described fault line walking record verify described anticipation position whether with
The position of actual fault point is consistent, if, it is determined that described anticipation position is the physical location of described trouble point.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102241A (en) * | 2017-06-08 | 2017-08-29 | 国网江苏省电力公司无锡供电公司 | A kind of fault distance-finding method and device unknown based on R L line parameter circuit values |
| CN108061843A (en) * | 2017-12-27 | 2018-05-22 | 温岭市创嘉信息科技有限公司 | A kind of equipment for Cable Fault Location |
| CN109946583A (en) * | 2017-12-21 | 2019-06-28 | 联发科技（新加坡）私人有限公司 | Determine the method and device of the position of the defects of electric wire of electronic system |
| CN110763956A (en) * | 2019-12-26 | 2020-02-07 | 华中科技大学 | Space division multiplexing-based optical fiber polarization sensing lightning positioning system and method |
| CN111435077A (en) * | 2019-01-11 | 2020-07-21 | 华为技术有限公司 | Method and device for measuring length of conductor cable |
| CN111830452A (en) * | 2020-07-22 | 2020-10-27 | 云南电网有限责任公司电力科学研究院 | Method for verifying reliability of double-end ranging positioning formula and simulation equipment |
| CN112748308A (en) * | 2020-12-28 | 2021-05-04 | 南方电网科学研究院有限责任公司 | Micro-grid single-end rapid fault positioning method and related device |
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| US11221379B2 (en) | 2017-12-21 | 2022-01-11 | Mediatek Singapore Pte. Ltd. | Systems and methods for on-chip time-domain reflectometry |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5533659A (en) * | 1978-09-01 | 1980-03-08 | Sumitomo Electric Ind Ltd | Troubled point locator of power cable |
| JPS60169775A (en) * | 1984-02-14 | 1985-09-03 | Sumitomo Electric Ind Ltd | Apparatus for locating failure point of power- transmission line |
| JPS60201269A (en) * | 1984-03-27 | 1985-10-11 | Central Res Inst Of Electric Power Ind | Detecting method of accident point on power transmission and distribution line by photosensor |
| JPH0454470A (en) * | 1990-06-25 | 1992-02-21 | Sumitomo Electric Ind Ltd | Fault point locating device for power transmission line |
| CN102207533A (en) * | 2011-04-12 | 2011-10-05 | 陕西化建工程有限责任公司 | Method for searching fault of power cable |
| CN102313859A (en) * | 2011-08-01 | 2012-01-11 | 中煤科工集团重庆研究院 | Method and system for positioning fault of underground cable on basis of IEEE 1588 (network measurement and control system precision clock synchronization protocol) |
| CN102809715A (en) * | 2012-08-20 | 2012-12-05 | 广州供电局有限公司 | On-line fault location device for high-voltage power cable |
| CN102967799A (en) * | 2012-11-29 | 2013-03-13 | 深圳市双合电气股份有限公司 | Comprehensive fault distance measuring method for electric power system |
| CN103439635A (en) * | 2013-09-06 | 2013-12-11 | 华北电力大学 | Electric power system wave-recoding file based fault detection method and system |
| CN104569741A (en) * | 2014-12-31 | 2015-04-29 | 国家电网公司 | Transmission line fault location method based on optical fiber composite overhead ground wire |
-
2016
- 2016-06-12 CN CN201610412545.2A patent/CN106124925A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5533659A (en) * | 1978-09-01 | 1980-03-08 | Sumitomo Electric Ind Ltd | Troubled point locator of power cable |
| JPS60169775A (en) * | 1984-02-14 | 1985-09-03 | Sumitomo Electric Ind Ltd | Apparatus for locating failure point of power- transmission line |
| JPS60201269A (en) * | 1984-03-27 | 1985-10-11 | Central Res Inst Of Electric Power Ind | Detecting method of accident point on power transmission and distribution line by photosensor |
| JPH0454470A (en) * | 1990-06-25 | 1992-02-21 | Sumitomo Electric Ind Ltd | Fault point locating device for power transmission line |
| CN102207533A (en) * | 2011-04-12 | 2011-10-05 | 陕西化建工程有限责任公司 | Method for searching fault of power cable |
| CN102313859A (en) * | 2011-08-01 | 2012-01-11 | 中煤科工集团重庆研究院 | Method and system for positioning fault of underground cable on basis of IEEE 1588 (network measurement and control system precision clock synchronization protocol) |
| CN102809715A (en) * | 2012-08-20 | 2012-12-05 | 广州供电局有限公司 | On-line fault location device for high-voltage power cable |
| CN102967799A (en) * | 2012-11-29 | 2013-03-13 | 深圳市双合电气股份有限公司 | Comprehensive fault distance measuring method for electric power system |
| CN103439635A (en) * | 2013-09-06 | 2013-12-11 | 华北电力大学 | Electric power system wave-recoding file based fault detection method and system |
| CN104569741A (en) * | 2014-12-31 | 2015-04-29 | 国家电网公司 | Transmission line fault location method based on optical fiber composite overhead ground wire |
Non-Patent Citations (3)
| Title |
|---|
| 周鹤良: "《电气工程师手册》", 30 April 2008, 中国电力出版社 * |
| 张广斌 等: "基于回路电流故障主导波头到达时差的输电线路故障测距", 《中国电机工程学报》 * |
| 石顺祥 等: "《光的电磁理论——光波的传播与控制》", 30 November 2013 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102241A (en) * | 2017-06-08 | 2017-08-29 | 国网江苏省电力公司无锡供电公司 | A kind of fault distance-finding method and device unknown based on R L line parameter circuit values |
| CN109946583B (en) * | 2017-12-21 | 2021-05-11 | 联发科技（新加坡）私人有限公司 | Method and apparatus for determining the location of defects in electrical wires of an electronic system |
| CN109946583A (en) * | 2017-12-21 | 2019-06-28 | 联发科技（新加坡）私人有限公司 | Determine the method and device of the position of the defects of electric wire of electronic system |
| US11221379B2 (en) | 2017-12-21 | 2022-01-11 | Mediatek Singapore Pte. Ltd. | Systems and methods for on-chip time-domain reflectometry |
| CN108061843A (en) * | 2017-12-27 | 2018-05-22 | 温岭市创嘉信息科技有限公司 | A kind of equipment for Cable Fault Location |
| CN111435077A (en) * | 2019-01-11 | 2020-07-21 | 华为技术有限公司 | Method and device for measuring length of conductor cable |
| CN110763956B (en) * | 2019-12-26 | 2020-04-10 | 华中科技大学 | Space division multiplexing-based optical fiber polarization sensing lightning positioning system and method |
| CN110763956A (en) * | 2019-12-26 | 2020-02-07 | 华中科技大学 | Space division multiplexing-based optical fiber polarization sensing lightning positioning system and method |
| CN111830452A (en) * | 2020-07-22 | 2020-10-27 | 云南电网有限责任公司电力科学研究院 | Method for verifying reliability of double-end ranging positioning formula and simulation equipment |
| CN111830452B (en) * | 2020-07-22 | 2023-05-23 | 云南电网有限责任公司电力科学研究院 | Method and simulation equipment for verifying reliability of double-end ranging positioning formula |
| CN112748308A (en) * | 2020-12-28 | 2021-05-04 | 南方电网科学研究院有限责任公司 | Micro-grid single-end rapid fault positioning method and related device |
| CN112748308B (en) * | 2020-12-28 | 2022-06-14 | 南方电网科学研究院有限责任公司 | Micro-grid single-end rapid fault positioning method and related device |
| CN113391167A (en) * | 2021-06-23 | 2021-09-14 | 武汉三相电力科技有限公司 | Cable traveling wave positioning system and method |
| CN113391167B (en) * | 2021-06-23 | 2023-03-10 | 武汉三相电力科技有限公司 | Cable traveling wave positioning system and method |
| CN114167212A (en) * | 2021-11-29 | 2022-03-11 | 海南电网有限责任公司电力科学研究院 | Cable ranging method, device and system |
| CN115350423A (en) * | 2022-08-19 | 2022-11-18 | 广东电网有限责任公司 | Fire prevention and control method, device, equipment, system and storage medium |
| CN115350423B (en) * | 2022-08-19 | 2023-09-15 | 广东电网有限责任公司 | Fire prevention and control method, device, equipment, system and storage medium |
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