CN109342884A - Travelling wave ranging and fault recording integrated device and implementation method - Google Patents
Travelling wave ranging and fault recording integrated device and implementation method Download PDFInfo
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- CN109342884A CN109342884A CN201811328309.8A CN201811328309A CN109342884A CN 109342884 A CN109342884 A CN 109342884A CN 201811328309 A CN201811328309 A CN 201811328309A CN 109342884 A CN109342884 A CN 109342884A
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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
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Abstract
This application discloses a kind of travelling wave ranging and fault recording integrated device and implementation methods.The device includes failure wave-recording unit, electrical quantity, non-electric quantity and switching value and carries out recording when breaking down in electric system for acquiring；Travelling wave signal processing unit, for calculating the distance of fault point by the time difference that signal reaches two end devices to travelling wave signal fault analysis and judgement type；Embedded system is connect with the travelling wave signal processing unit, for calculating position of failure point；Embedded system is connect with the failure wave-recording unit, is used for Wave data when failure and is stored；Embedded system further include: preset function interface, for providing data input or output.Present application addresses the lower problems of measurement accuracy and sample frequency, can not only obtain accurate position of failure point, moreover it is possible to record high frequency transient waveform.Travelling wave ranging and fault recording integrated device provided by the present application have the characteristics that precision height, high reliablity.
Description
Technical field
This application involves power domain, in particular to a kind of travelling wave ranging and fault recording integrated device and
Implementation method.
Background technique
As power grid scale is growing, and transmission voltage grade raising and transmission distance increase, power grid architecture
A possibility that increasingly complicating, breaking down also inevitably increases.The fault wave recording device to put into operation extensively in recent years is to defeated
It is quickly and accurately analyzed comprehensively after line fault, judges that fault type, positioning and debugging point play actively
Effect, reduce because have a power failure caused by loss, improve safety, the reliability of Operation of Electric Systems.Meanwhile conventional event
Barrier wave recording device also exposes some functional defects.
For example, inventor has found that the sample frequency of fault wave recording device is relatively low.In electric power system fault, operation, thunder and lightning etc.
In perturbation process, voltage and current includes high fdrequency component abundant, contains a large amount of system information, signal frequency is up to 500KHz and arrives
5MHz.These high-frequency informations are extracted, are analyzed, the Fast Identification to system structure, parameter may be implemented, realize power train
The high speed transient of system is analyzed and control.Fault oscillograph sampling rate is generally 1 to 10KHz, is primarily used to record system
The variation of system power current, voltage and its derived quantity caused by large disturbances can not record high fdrequency component electric system abundant
Transient signal.
For another example, inventor also found that the range accuracy of fault wave recording device is insufficient.Fault wave recording device generallys use resistance
Anti- location algorithm, range error is larger in actual operation.
In addition, existing travelling wave ranging system generallys use both-end distance measuring method to improve the accuracy of traveling wave capture, need
Dual ended data communication and synchronous clock synchronization equipment are wanted, while a set of traveling wave ranging device must be respectively installed in route two sides.This is also limited
The promotion and popularization of equipment, so that traveling wave ranging device is fitted without in many 110KV and following substation.
For the lower problem of measurement accuracy in the related technology and sample frequency, effective solution side is not yet proposed at present
Case.
Summary of the invention
The main purpose of the application is to provide a kind of travelling wave ranging and fault recording integrated device and implementation method,
To solve the problems, such as that measurement accuracy and sample frequency are lower.
To achieve the goals above, according to the one aspect of the application, a kind of travelling wave ranging and failure wave-recording one are provided
Body makeup is set.
Include: according to the travelling wave ranging of the application and fault recording integrated device
Electrical quantity, non-electric quantity and switch when fault occur in electric system for acquiring for failure wave-recording unit
Recording is measured and carries out,
Travelling wave signal processing unit, for passing through traveling wave by carrying out analyzing and determining the type that is out of order to travelling wave signal
The time difference that signal reaches two end devices calculates the distance of fault point；
Embedded system is connect with the travelling wave signal processing unit, and fault occurs for computing electric power line failure
When position of failure point；
Embedded system is connect with the failure wave-recording unit, and the Wave data under recording when for failure stores；
Embedded system further include: preset function interface, for providing data input or data output.Wherein, by embedding
Embedded system can in failure wave-recording unit and travelling wave signal processing unit data or signal integrated, stored and shown
Show, man-machine interactive interface is provided, user is facilitated to check and operate.
Further, the travelling wave signal processing unit includes: ultrahigh speed electricity isolating transmitter and traveling wave shaping analysis
Circuit, travelling wave signal are converted into the voltage being electrically isolated from each other, current signal or number by the ultrahigh speed electricity isolating transmitter
Word encoded signal；And the embedded system is input to after circuit is analyzed in the traveling wave shaping.
Further, preset traveling wave and resistance algorithm algorithm in embedded systems, for using single-ended impedance telemetry
Primary Location fault point；According to Primary Location fault point obtain fault point approximate range to collect wavefront arrival time into
Row selectively filtering selects true fault traveling wave wave head and route opposite end reflection wave head, obtains accurate position of failure point.
Further, the travelling wave signal processing unit further include: small-sized traveling wave sensor, the small-sized traveling wave sensor
For using the high-performance disturbance rejection traveling wave sensor of Roche air core coil.
Further, it is also configured with high-speed dsp collection plate between the embedded system and the failure wave-recording unit,
The high-speed dsp collection plate is used for for carrying out 14bit, the high-speed, high precision data sampling of 20MHz.
Further, the failure wave-recording unit includes: direct current signal transmitter, is used to handle the event of high-frequency direct-current signal
The direct current signal transmitter of barrier is connect by collection plate with the embedded system；
In the embedded system acquisition and recording high frequency transient waveform, and record wavefront waveform and arrival time.
Further, 110KV and transmission line of electricity electric system below are used for.
Further, the failure wave-recording unit includes: to be galvanically isolated transmitter, is used to handle the letter of CT loop fault
Number or data, and connect with the embedded system by collection plate；Voltage isolating transmitter is used to handle PT loop fault
Signal or data, and connect by collection plate with the embedded system；It opens into isolation circuit, is used to handle switching value failure
Signal or data, and connect by collection plate with the embedded system；Isolation circuit is outputed, is used to handle and outputs node failure
Signal or data, and connect with the embedded system by collection plate.
Further, the preset function interface include: output interface, input interface, clock sync cap, storage connect
Mouth, communication interface.
To achieve the goals above, according to the another aspect of the application, a kind of travelling wave ranging and failure wave-recording one are provided
The implementation method of body.
It include: to occur in acquisition electric system according to the travelling wave ranging of the application and the integrated implementation method of failure wave-recording
Electrical quantity, non-electric quantity and switching value and fault wave data are stored when fault；Voltage or current traveling wave are measured in failure
The distance of point, and handle position of failure point when fault occurs for transmission line malfunction；Input instruction is received, and exports failure
Point position positioning result.
In the embodiment of the present application, using failure wave-recording unit, electricity when fault occurs in electric system for acquiring
The mode of tolerance, non-electric quantity and switching value, by travelling wave signal processing unit, for measuring voltage or current traveling wave in event
Hinder the distance of point, reached embedded system connect with the travelling wave signal processing unit, for handling transmission line malfunction hair
Position of failure point when raw fault；Embedded system is connect with the failure wave-recording unit, for storing fault wave data；
Embedded system further include: preset function interface, for providing the purpose of data input or data output, to realize to event
Barrier point position is accurately positioned and a technical effect for high-precision fault wave sampling, and then solves measurement accuracy and sample frequency is lower
The technical issues of.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present application, so that the application's is other
Feature, objects and advantages become more apparent upon.The illustrative examples attached drawing and its explanation of the application is for explaining the application, not
Constitute the improper restriction to the application.In the accompanying drawings:
Fig. 1 is according to travelling wave ranging and fault recording integrated device in one embodiment of the application；
Fig. 2 is according to the travelling wave ranging and fault recording integrated device in the application preferred embodiment；And
Fig. 3 is the travelling wave ranging and failure wave-recording integral method schematic diagram according to the embodiment of the present application.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application a part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of the application protection
It encloses.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to embodiments herein described herein.In addition, term " includes " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Integrated apparatus in the application, by combination failure recording working principle, to travelling wave ranging theory and technology into
The elaboration and in-depth study of row system, and incorporation engineering is practical.The application integrated apparatus has conventional fault wave recording device
With the repertoire of traveling wave ranging device, and can acquire storage high frequency transient waveform, in system line failure, from transient-wave
Effective traveling wave information is extracted in middle analysis, and the system dynamic waveform of combination failure recording carries out the synthesis of traveling wave and resistance algorithm
Ranging analysis, realizes transmission line malfunction precise positioning.High frequency transient waveform when to nonsystematic line fault or operation carries out
Analysis is carried out and is accumulated to the electric power data of lightning stroke positioning, discharge in insulation, flashover.
As shown in Figure 1, the travelling wave ranging and fault recording integrated device of the embodiment of the present application include: failure wave-recording unit
10, occur electrical quantity, non-electric quantity and switching value and to carry out recording when fault in electric system for acquiring, traveling wave letter
Number processing unit 20, for reaching both ends by travelling wave signal by carrying out analyzing and determining the type that is out of order to travelling wave signal
The time difference of device calculates the distance of fault point；Embedded system 100 is connect with the travelling wave signal processing unit 20, is used
Position of failure point when fault occurs for computing electric power line failure；Embedded system 100 and the failure wave-recording unit
10 connections, the Wave data under recording when for failure store；Embedded system 100 further include: preset function interface 30,
For providing data input or data output.
Be in the failure wave-recording unit 10 of the embodiment of the present application when electric system is broken down, can automatic, accurate recording
Electrical quantity and non-electric quantity and the self recording apparatus of switching value during failure is forward and backward.Failure wave-recording unit 10 starts
It is to have electric current, voltage jump amount by the apparent electrical quantity of fault signature；Electric current, voltage out-of-limit；Frequency variation and switching value
Deng.
As preferred in the present embodiment, the failure wave-recording unit 10 includes: the electric current for handling CT loop fault
Isolating transmitter is connect by collection plate with the embedded system；For handling the voltage isolating transmitter of PT loop fault,
It is connect by collection plate with the embedded system；For handling the opening into isolation circuit of switching value failure, pass through collection plate
It is connect with the embedded system；For handle output node failure output isolation circuit, pass through collection plate and the insertion
System connection.
As preferred in the present embodiment, the failure wave-recording unit 10 includes: for handling high-frequency direct-current signal fault
Direct current signal transmitter, connect with the embedded system by collection plate；In the embedded system acquisition and recording high frequency
Transient-wave, and record wavefront waveform and arrival time.Specifically, the integrated apparatus of the application can not only acquire
System dynamic course based on power frequency quantity, moreover it is possible to which acquisition and recording high frequency transient waveform records wavefront waveform and arrival time.
High frequency transient waveform when by nonsystematic line fault or operation is analyzed, and is carried out to lightning stroke positioning, discharge in insulation, sudden strain of a muscle
The data accumulation and early-stage study of network.
As preferred in the present embodiment, the failure wave-recording unit 10 includes: for handling high-frequency direct-current signal fault
Direct current signal transmitter, connect with the embedded system by collection plate；In the embedded system acquisition and recording high frequency
Transient-wave, and record wavefront waveform and arrival time.The integrated apparatus of the application passes through acquisition and recording high frequency transient
Waveform records wavefront waveform and arrival time, high frequency transient waveform when by nonsystematic line fault or operation into
Row analysis can also accumulate the electric power data of lightning stroke positioning, discharge in insulation, flashover.
Spread speed passes through survey close to the light velocity to traveling wave on the line in the travelling wave signal processing unit 20 of the embodiment of the present application
Measure the propagation time progress ranging of voltage, current traveling wave between fault point and bus.
As preferred in the present embodiment, the travelling wave signal processing unit 20 includes: ultrahigh speed electricity isolating transmitter
Circuit is analyzed with traveling wave shaping, travelling wave signal is converted into the electricity being electrically isolated from each other by the ultrahigh speed electricity isolating transmitter
Pressure, current signal or digitally encoded signal；And the embedded system is input to after circuit is analyzed in the traveling wave shaping.It is logical
It crosses preset algorithm in the embedded system and calculates distance.
As preferred in the present embodiment, preset traveling wave and resistance algorithm algorithm in embedded system 100, for using
Single-ended impedance telemetry Primary Location fault point；Fault point approximate range is obtained to collecting traveling wave according to Primary Location fault point
Wave head arrival time is selectively filtered, and is selected true fault traveling wave wave head and route opposite end reflection wave head, is obtained
Accurate position of failure point.Specifically, the integrated apparatus of the application, device are temporary to the dynamic process medium-high frequency of system line failure
State signal carries out whole high-precision without dead zone high-speed record, does not depend on the distance measuring method of GPS and terminal device, uses single-ended impedance
Telemetry carries out Primary Location to fault point, has carried out choosing to wavefront arrival time using obtained fault point approximate range
The filtering of selecting property selects true fault traveling wave wave head and route opposite end reflection wave head, obtains accurate position of failure point.
As preferred in the present embodiment, the travelling wave signal processing unit 20 further include: small-sized traveling wave sensor, it is described
Small-sized traveling wave sensor is the high-performance disturbance rejection traveling wave sensor using Roche air core coil.Specifically, using based on Roche
The high-performance disturbance rejection traveling wave sensor technology of air core coil makes dedicated small-sized traveling wave sensor, and current traveling wave is replaced to survey
The magnetic core transmitter for increasing bandwidth by aerating gap used away from device.Traveling wave sensor special based on Rogowski coil can be big
Width inhibits low frequency signal, promotes the high fdrequency component gain comprising traveling wave information.
Using 32 high speed embedded systems in the embedded system 100 of the embodiment of the present application.Specifically, described
Be also configured with high-speed dsp collection plate between embedded system and the failure wave-recording unit, the high-speed dsp collection plate be used for into
The high-speed, high precision data sampling of row 14bit, 20MHz.More particularly to high speed output and memory technology, it is contemplated that at present
Most of traveling wave ranging devices are using the sample rate of 1MHZ or so, and sampling precision is mostly also in 12bit hereinafter, cannot effectively adopt
Collection and identification traveling wave echo-signal, and there are dead zones between traveling wave acquisition twice, when there are more disturbance and failure back waves
When be likely to lose really effective travelling wave signal.14bit sampling precision will be used in embodiments herein, maximum is often led to
The sample rate of road 20MHz can clearly be shown weaker traveling wave echo-signal.Meanwhile it being passed using the data of 8Gbit
Defeated bandwidth, the high-speed buffer 256M, it is ensured that traveling wave is acquired without dead zone.
As preferred in the present embodiment, integrated apparatus can be used for 110KV and transmission line of electricity electric system below.By
In in order to accurately carry out fault location after line fault, the transmission line of electricity of 220KV or more is generally configured with travelling wave ranging system
System, improves the range accuracy of transmission line of electricity, highly beneficial to timely reparation route and fast recovery of power supply.It is caught to improve traveling wave
The accuracy obtained, existing travelling wave ranging system generally use both-end distance measuring method, need dual ended data communication and synchronous clock synchronization
Equipment, while a set of traveling wave ranging device must be respectively installed in route two sides.Which also limits the promotion and popularization of equipment, so that
Many 110KV and following substation are fitted without traveling wave ranging device.
It can be reduced in the integrated apparatus of the application and set each investment, failure wave-recording and travelling wave ranging are combined into a suit
It sets, reduces equipment cost.Meanwhile integrated hardware transformation is carried out to existing oscillograph and travelling wave ranging, using single machine box structure
Design, cancels the multiple cases design pattern that acquisition cabinet, the transmitter cabinet generallyd use adds backstage cabinet.Device can not only
Acquire the system dynamic course based on power frequency quantity, moreover it is possible to which acquisition and recording high frequency transient waveform records wavefront waveform and arrival
Moment.Further, it so that 110KV and transmission line of electricity below also can largely install failure wave-recording and traveling wave ranging device, realizes
Failure high accuracy positioning.
As preferred in the present embodiment, the preset function interface includes: that output interface, input interface, clock are synchronous
Interface, storage interface, communication interface.
Specifically, the output interface includes industrial LCD, is used for real-time display position of failure point.Printing interface is used
In real time output data print result.
The input interface includes panel button, for being inputted by control panel interface；Keyboard and mouse is used for
It is inputted by mouse or keyboard interface.
The clock sync cap includes GPS synchronised clock, for providing GPS synchronizing clock signals.
The storage interface includes solid state hard disk, for storing fault data and associated processing outcomes.
The communication interface includes high speed Ethernet mouth, and serial communication interface is for providing and the interface of PERCOM peripheral communication.
It can be seen from the above description that the application realizes following technical effect:
In the embodiment of the present application, using failure wave-recording unit, electricity when fault occurs in electric system for acquiring
The mode of tolerance, non-electric quantity and switching value, by travelling wave signal processing unit, for measuring voltage or current traveling wave in event
Hinder the distance of point, reached embedded system connect with the travelling wave signal processing unit, for handling transmission line malfunction hair
Position of failure point when raw fault；Embedded system is connect with the failure wave-recording unit, for storing fault wave data；
Embedded system further include: preset function interface, for providing the purpose of data input or data output, to realize to event
Barrier point position is accurately positioned and a technical effect for high-precision fault wave sampling, and then solves measurement accuracy and sample frequency is lower
The technical issues of.
It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
It is executed in computer system, although also, logical order is shown in flow charts, and it in some cases, can be with not
The sequence being same as herein executes shown or described step.
According to the embodiment of the present application, a kind of travelling wave ranging for implementing above-mentioned apparatus and failure wave-recording one are additionally provided
The implementation method of change, as shown in figure 3, this method comprises:
Step S101 acquires electrical quantity, non-electric quantity and switching value when fault occurring in electric system and stores
Fault wave data simultaneously carry out recording；
In failure wave-recording unit be when electric system is broken down, can automatic, accurate recording in the forward and backward process of failure
The self recording apparatus of middle electrical quantity and non-electric quantity and switching value.The starting of failure wave-recording unit 10 is obvious by fault signature
Electrical quantity, have electric current, voltage jump amount；Electric current, voltage out-of-limit；Frequency variation and switching value etc..
As preferred in the present embodiment, the failure wave-recording unit include: for handle the electric current of CT loop fault every
From transmitter, it is connect by collection plate with the embedded system；For handling the voltage isolating transmitter of PT loop fault,
It is connect by collection plate with the embedded system；For handling the opening into isolation circuit of switching value failure, by collection plate with
The embedded system connection；For handle output node failure output isolation circuit, pass through collection plate and insertion system
System connection.
As preferred in the present embodiment, the failure wave-recording unit includes: direct current signal transmitter, is used to handle height
Its of frequency direct current signal failure is connect by collection plate with the embedded system；It is temporary in the embedded system acquisition and recording high frequency
State waveform, and record wavefront waveform and arrival time.Specifically, the integrated apparatus of the application can not only acquire base
In the system dynamic course of power frequency quantity, moreover it is possible to which acquisition and recording high frequency transient waveform records wavefront waveform and arrival time.It is logical
High frequency transient waveform when crossing to nonsystematic line fault or operation is analyzed, and is carried out to lightning stroke positioning, discharge in insulation, flashover
Data accumulation and early-stage study.
As preferred in the present embodiment, the failure wave-recording unit includes: to be used to handle with electric current isolating transmitter
The signal or data of CT loop fault, and connect by collection plate with the embedded system；Voltage isolating transmitter is used to locate
The signal or data of PT loop fault are managed, and is connect by collection plate with the embedded system；It opens into isolation circuit, is used to locate
The signal or data of switching value failure are managed, and is connect by collection plate with the embedded system；Isolation circuit is outputed, is used to locate
Reason outputs the signal or data of node failure, and is connect by collection plate with the embedded system.The integrated apparatus of the application
By acquisition and recording high frequency transient waveform, wavefront waveform and arrival time are recorded, by nonsystematic line fault or behaviour
High frequency transient waveform when making is analyzed, and can also be accumulated to the electric power data of lightning stroke positioning, discharge in insulation, flashover.
Step S102 analyzes and determines the type that is out of order by carrying out to travelling wave signal, reaches both ends by travelling wave signal
The time difference of device calculates the distance of fault point；
Spread speed is close to the light velocity on the line for traveling wave in traveling wave signal processing unit, by measuring voltage, electric current row
Propagation time of the wave between fault point and bus carries out ranging.
As preferred in the present embodiment, the travelling wave signal processing unit include: ultrahigh speed electricity isolating transmitter and
Traveling wave shaping analyze circuit, travelling wave signal by the ultrahigh speed electricity isolating transmitter be converted into the voltage being electrically isolated from each other,
Current signal or digitally encoded signal；And the embedded system is input to after circuit is analyzed in the traveling wave shaping.Pass through
Preset algorithm calculates distance in the embedded system.
Step S103, the Wave data under recording when to failure store, and export fault point after receiving input instruction
Position positioning result.
Preset traveling wave and resistance algorithm algorithm in embedded system 100, for tentatively fixed using single-ended impedance telemetry
Position fault point；Fault point approximate range, which is obtained, according to Primary Location fault point has carried out choosing to wavefront arrival time is collected
The filtering of selecting property selects true fault traveling wave wave head and route opposite end reflection wave head, obtains accurate position of failure point.Specifically
Ground, the integrated implementation method of the application, device carry out the dynamic process medium-high frequency transient signal of system line failure whole
High-precision does not depend on the distance measuring method of GPS and terminal device, using single-ended impedance telemetry to fault point without dead zone high-speed record
Primary Location is carried out, wavefront arrival time is selectively filtered using obtained fault point approximate range, is selected
Wave head is reflected in true fault traveling wave wave head and route opposite end out, obtains accurate position of failure point.
As preferred in the present embodiment, in traveling wave signal processing unit further include: small-sized traveling wave sensor, it is described small-sized
Traveling wave sensor is the high-performance disturbance rejection traveling wave sensor using Roche air core coil.Specifically, using hollow based on Roche
The high-performance disturbance rejection traveling wave sensor technology of coil makes dedicated small-sized traveling wave sensor, and current travelling wave ranging is replaced to fill
Set the magnetic core transmitter for increasing bandwidth by aerating gap used.Traveling wave sensor special based on Rogowski coil can substantially press down
Low frequency signal processed, promoted include traveling wave information high fdrequency component gain.
Using 32 high speed embedded systems in the embedded system 100 of the embodiment of the present application.Specifically, described
High-speed dsp collection plate is also configured between embedded system and the failure wave-recording unit, the high-speed dsp collection plate is for adopting
With 14bit sampling precision, the sample rate of maximum every channel 20MHz.More particularly to high speed output and memory technology, examine
Current most of traveling wave ranging devices are considered using the sample rate of 1MHZ or so, and sampling precision is not mostly in 12bit hereinafter, yet
Traveling wave echo-signal effectively can be acquired and identify, and there are dead zones between traveling wave acquisition twice, when there are more disturbances and event
It is likely to lose really effective travelling wave signal when hindering back wave.14bit sampling precision will be used in embodiments herein,
The sample rate of maximum every channel 20MHz, can clearly show weaker traveling wave echo-signal.Meanwhile using 8Gbit
Data transfer bandwidth, the high-speed buffer 256M, it is ensured that traveling wave acquire without dead zone.
As preferred in the present embodiment, integrated implementation method, it can be used for 110KV and transmission line of electricity power train below
System.Since in order to accurately carry out fault location after line fault, the transmission line of electricity of 220KV or more is generally configured with traveling wave survey
Away from system, the range accuracy of transmission line of electricity is improved, it is highly beneficial to timely reparation route and fast recovery of power supply.To improve row
The accuracy of wave capture, existing travelling wave ranging system generallys use both-end distance measuring method, need dual ended data communication with it is synchronous
Clock synchronization equipment, while a set of traveling wave ranging device must be respectively installed in route two sides.Which also limits the promotion and popularization of equipment, with
Extremely traveling wave ranging device is fitted without in many 110KV and following substation.
It can be reduced in the integrated implementation method of the application and set each investment, failure wave-recording and travelling wave ranging are combined into a set of
Device reduces equipment cost.Meanwhile integrated hardware transformation is carried out to existing oscillograph and travelling wave ranging, using single machine case knot
Structure design, cancels the multiple cases design pattern that acquisition cabinet, the transmitter cabinet generallyd use adds backstage cabinet.Device can not only
Enough system dynamic course of the acquisition based on power frequency quantity, moreover it is possible to which acquisition and recording high frequency transient waveform records wavefront waveform and arrives
Up to the moment.Further, real so that 110KV and transmission line of electricity below also can largely install failure wave-recording and traveling wave ranging device
Existing failure high accuracy positioning.
As preferred in the present embodiment, the preset function interface includes: that output interface, input interface, clock are synchronous
Interface, storage interface, communication interface.Embedded system can be to failure wave-recording unit and traveling wave by the preset function interface
Data or signal in signal processing unit are integrated, stored and are shown, provide man-machine interactive interface, user is facilitated to look into
It sees and operates.
Specifically, the output interface includes industrial LCD, is used for real-time display position of failure point.Printing interface is used
In real time output data print result.
The input interface includes panel button, for being inputted by control panel interface；Keyboard and mouse is used for
It is inputted by mouse or keyboard interface.
The clock sync cap includes GPS synchronised clock, for providing GPS synchronizing clock signals.
The storage interface includes solid state hard disk, for storing fault data and associated processing outcomes.
The communication interface includes high speed Ethernet mouth, and serial communication interface is for providing and the interface of PERCOM peripheral communication.
Obviously, those skilled in the art should be understood that each module of above-mentioned the application or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
Be performed by computing device in the storage device, perhaps they are fabricated to each integrated circuit modules or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.In this way, the application be not limited to it is any specific
Hardware and software combines.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of travelling wave ranging and fault recording integrated device characterized by comprising
Failure wave-recording unit, for acquire in electric system occur fault when electrical quantity, non-electric quantity and switching value simultaneously
Recording is carried out,
Travelling wave signal processing unit, for passing through travelling wave signal by carrying out analyzing and determining the type that is out of order to travelling wave signal
The time difference for reaching two end devices calculates the distance of fault point；
Embedded system is connect with the travelling wave signal processing unit, when for computing electric power line failure generation fault
Position of failure point；
Embedded system is connect with the failure wave-recording unit, and the Wave data under recording when for failure stores；
Embedded system further include: preset function interface, for providing data input or data output.
2. travelling wave ranging according to claim 1 and fault recording integrated device, which is characterized in that the travelling wave signal
Processing unit includes: ultrahigh speed electricity isolating transmitter and traveling wave shaping analysis circuit, and travelling wave signal passes through the ultrahigh speed electricity
Amount isolating transmitter is converted into the voltage being electrically isolated from each other, current signal or digitally encoded signal；And pass through the traveling wave shaping
The embedded system is input to after analysis circuit.
3. travelling wave ranging according to claim 1 and fault recording integrated device, which is characterized in that in embedded system
In preset traveling wave and resistance algorithm algorithm, for use single-ended impedance telemetry Primary Location fault point；According to Primary Location event
Barrier point obtains fault point approximate range and is selectively filtered to collecting wavefront arrival time, selects true former
Hinder wavefront and wave head is reflected in route opposite end, obtains accurate position of failure point.
4. travelling wave ranging according to claim 1 and fault recording integrated device, which is characterized in that the travelling wave signal
Processing unit further include: small-sized traveling wave sensor, the small-sized traveling wave sensor are anti-using the high-performance of Roche air core coil
Disturb traveling wave sensor.
5. travelling wave ranging according to claim 1 and fault recording integrated device, which is characterized in that described embedded
High-speed dsp collection plate is also configured between system and the failure wave-recording unit, the high-speed dsp collection plate is for carrying out
The high-speed, high precision data sampling of 14bit, 20MHz.
6. travelling wave ranging according to claim 1 and fault recording integrated device, which is characterized in that the failure wave-recording
Unit includes: direct current signal transmitter, is used to handle high-frequency direct-current signal fault, passes through collection plate and the embedded system
Connection；
In the embedded system acquisition and recording high frequency transient waveform, and record wavefront waveform and arrival time.
7. travelling wave ranging according to claim 1 and fault recording integrated device, which is characterized in that it is used for 110KV
And transmission line of electricity electric system below.
8. travelling wave ranging according to claim 1 and fault recording integrated device, which is characterized in that the failure wave-recording
Unit includes:
It is galvanically isolated transmitter, is used to handle the signal or data of CT loop fault, and be by collection plate and the insertion
System connection；
Voltage isolating transmitter is used to handle the signal or data of PT loop fault, and is by collection plate and the insertion
System connection；
The signal for being used for handling switching value failure into isolation circuit or data are opened, and pass through collection plate and the embedded system
Connection；
Isolation circuit is outputed, is used to handle the signal or data for outputing node failure, and be by collection plate and the insertion
System connection.
9. travelling wave ranging according to claim 1 and fault recording integrated device, which is characterized in that the preset function
Interface includes: output interface, input interface, clock sync cap, storage interface, communication interface.
10. a kind of travelling wave ranging and the integrated implementation method of failure wave-recording characterized by comprising
It electrical quantity, non-electric quantity and switching value and stores fault wave data when fault occurs in acquisition electric system and goes forward side by side
Row recording；
By carrying out analyzing and determining the type that is out of order to travelling wave signal, counted in the time difference for reaching two end devices by travelling wave signal
Calculate the distance to fault point；
Wave data under recording when to failure stores, and exports position of failure point positioning result after receiving input instruction.
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| CN201811328309.8A CN109342884A (en) | 2018-11-09 | 2018-11-09 | Travelling wave ranging and fault recording integrated device and implementation method |
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| CN201811328309.8A CN109342884A (en) | 2018-11-09 | 2018-11-09 | Travelling wave ranging and fault recording integrated device and implementation method |
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| CN109342884A true CN109342884A (en) | 2019-02-15 |
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| CN201811328309.8A Pending CN109342884A (en) | 2018-11-09 | 2018-11-09 | Travelling wave ranging and fault recording integrated device and implementation method |
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| CN109782134A (en) * | 2019-03-14 | 2019-05-21 | 广西电网有限责任公司玉林供电局 | The traveling wave fault analysis system and method for a kind of power frequency in conjunction with high frequency recorded wave file |
| CN110161376A (en) * | 2019-06-24 | 2019-08-23 | 四川电安智能科技有限公司 | A kind of traveling wave fault moment extraction algorithm |
| CN110888016A (en) * | 2019-10-21 | 2020-03-17 | 贵州电网有限责任公司 | Power distribution network traveling wave fault data analysis and processing system based on DSP (digital Signal processor) |
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