CN207541250U - Automatically generate the travelling wave ranging calibration equipment of signal source - Google Patents
Automatically generate the travelling wave ranging calibration equipment of signal source Download PDFInfo
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- CN207541250U CN207541250U CN201721700903.6U CN201721700903U CN207541250U CN 207541250 U CN207541250 U CN 207541250U CN 201721700903 U CN201721700903 U CN 201721700903U CN 207541250 U CN207541250 U CN 207541250U
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- fault
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- signal source
- wave
- calibration equipment
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Abstract
The utility model provides a kind of travelling wave ranging calibration equipment for automatically generating signal source, including satellite time synchronization unit, processor and the display being connected to the processor, parameter input unit, signal source generation unit, signal receiving unit and judging unit.Above-mentioned calibration equipment directly generates fault waveform data and standard failure position by input parameter, it is synchronized and triggered using GPS satellite synchronizing device, to export fault waveform data to traveling wave fault location device, wavefront time difference, velocity of wave and the circuit overall length sent so as to fault traveling wave wave head and offside traveling wave fault location device that traveling wave fault location device is sent out according to the travelling wave ranging calibration equipment for automatically generating signal source that this side receives, orient abort situation, finally compared with the abort situation of practical waveform, to achieve the purpose that verification.
Description
Technical field
The utility model is related to technical field of power systems more particularly to a kind of travelling wave ranging schools for automatically generating signal source
Experiment device.
Background technology
Since transmission line of electricity is longer and the uncertainty of trouble point in electric system, so the survey of failure point of power transmission line
Away from just becoming particularly important.Accurate trouble point ranging can reduce line walking range, reduce power off time, and improving line powering can
By property.After transmission line of electricity breaks down, under the action of the additional supply of trouble point, it can be generated close to light velocity propagation on circuit
Voltage and current traveling wave.The measurement that trouble point distance is carried out using traveling wave is a kind of effective transmission line malfunction detection hand
Section, a kind of both-end distance measuring mode of transmission line malfunction select current traveling wave signal to be supervised as recording by the use of traveling wave ranging device
Depending on the signal analyzed with ranging, the primary wave that acquisition in real time, record transmission line malfunction generate reaches the row at detection busbar both ends
Wave signal is reached the time difference at busbar both ends using wavelet transformation technique analysis travelling wave signal, calculates position of failure point.
At present, traveling wave ranging device has found broad application in ultra-high-tension power transmission line, to ensure travelling wave ranging result
Validity, it is necessary to be verified to traveling wave ranging device, the checking procedure of traveling wave ranging device, be to be emulated to fault traveling wave
Process, the verification of existing traveling wave ranging device has only carried out simple manufacture verification, i.e., at the current loop both ends of the device
Simultaneously plus a DC current signal judges whether its ranging is accurate.It is flat due to lacking test to be installed to the range unit behind scene
Platform is with regard to no longer carrying out verifying；In this way, traveling wave ranging device there is in the process of running, whether startup is accurate sensitive, and precision is
No the problem of meeting the requirements.
In view of the importance of travelling wave ranging, it is necessary to be verified to traveling wave ranging device, to ensure travelling wave ranging result
Validity, and existing calibration equipment needs first to download pre-set fault waveform, is subsequently used for verifying, this passes data
It is defeated to have certain requirement, and since fault waveform can only be selected in pre-set database, it is impossible to according to reality
Situation is flexibly changed, therefore, it is necessary to design a kind of new calibration equipment, can automatically generate signal source, is further met
Actual demand.
Utility model content
The utility model provides a kind of travelling wave ranging calibration equipment for automatically generating signal source, to solve in the prior art
When being verified to traveling wave ranging device, the signal source output frequency emulated to fault traveling wave is narrow, verifies inaccurate skill
Art problem.
The utility model provides a kind of travelling wave ranging calibration equipment for automatically generating signal source, including satellite time synchronization list
Member, processor and the display being connected to the processor, parameter input unit, signal source generation unit, signal receiving unit
And judging unit；Wherein, the parameter input unit is used for input fault shape information, and the fault waveform information includes failure
Wave data and standard failure position；The processor is used for the fault waveform inputted by the parameter input unit
Information is sent to the signal source generation unit；The signal source generation unit is used for according to the fault waveform letter received
Breath generates corresponding waveshape output signal；The satellite time synchronization unit is used to implement synchronous triggering, to be surveyed to traveling wave fault
Away from device output waveform output signal, traveling wave fault location device calculates according to waveshape output signal and obtains Fisrt fault position,
And the Fisrt fault position is sent to signal receiving unit；The signal receiving unit is surveyed for receiving the traveling wave fault
Judgement list is sent under the control of the processor away from the Fisrt fault position that device is sent, and by the Fisrt fault position
Member；The judging unit is used to Fisrt fault position and the standard failure position being compared, and on the display screen
Show judging result.
Further, above device further includes the storage unit being connect with processor, and the storage unit is used to store institute
State fault waveform information.
Further, above device further includes the wave shape playback unit being connect with processor, and the wave shape playback unit is used
In obtaining the fault waveform data from the storage unit, and the fault waveform data are graphically included in institute
It states on display screen.
Further, the storage unit for 16 bit widths, 512K capacity static random-access memory.
The travelling wave ranging calibration equipment provided by the utility model for automatically generating signal source, is directly generated by input parameter
Fault waveform data and standard failure position are synchronized using GPS satellite synchronizing device and triggered（Sectors rushes）, to be surveyed to traveling wave fault
Fault waveform data are exported away from device.Then the failed row that traveling wave fault location device is sent out according to the calibration equipment that this side receives
Wavefront time difference, velocity of wave and the circuit overall length that wave wave head and opposite end traveling wave fault location device are sent, orient fault bit
It puts, i.e. Fisrt fault position, is then sent to calibration equipment, by calibration equipment by Fisrt fault position and practical waveform
Abort situation（That is standard failure position）It compares, to achieve the purpose that verification, can effectively control the generation of failure, reduce and have a power failure
Loss.
Description of the drawings
The utility model will be hereinafter described in more detail based on embodiment and refer to the attached drawing.Wherein：
Fig. 1 is that the structure of the travelling wave ranging calibration equipment for automatically generating signal source that the utility model embodiment provides is shown
It is intended to；
Fig. 2 is another structure for the travelling wave ranging calibration equipment for automatically generating signal source that the utility model embodiment provides
Schematic diagram.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not drawn according to practical ratio.
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further detail.
Fig. 1 is that the structure of the travelling wave ranging calibration equipment for automatically generating signal source that the utility model embodiment provides is shown
It is intended to, as shown in Figure 1, the utility model provides a kind of travelling wave ranging calibration equipment for automatically generating signal source, during including satellite
Between synchronization unit 1, processor 2 and the display 3 being connect with the processor 2, parameter input unit 4, signal source generation unit
5th, signal receiving unit 6 and judging unit 7；Wherein, the parameter input unit 4 is used for input fault shape information, the event
Hinder shape information and include fault waveform data and standard failure position；The processor 2 is single for that will be inputted by the parameter
The fault waveform information of 4 input of member is sent to the signal source generation unit 5；The signal source generation unit 5 is used for root
Corresponding waveshape output signal is generated according to the fault waveform information received；The satellite time synchronization unit 1 is for real
Now synchronous triggering, with to traveling wave fault location device output waveform output signal, traveling wave fault location device is exported according to waveform
Signal, which calculates, obtains Fisrt fault position, and the Fisrt fault position is sent to signal receiving unit 6；The signal receives
Unit 6 is used to receive the Fisrt fault position that the traveling wave fault location device is sent, and by the Fisrt fault position in institute
It states and judging unit 7 is sent under the control of processor 2；The judging unit 7 is used for Fisrt fault position and standard event
Barrier position is compared, and show judging result on the display screen.
Specifically, the device in the present embodiment can be used for the verification of both-end traveling wave fault location device, it can also be used to single-ended
The verification of traveling wave fault location device specifically may be provided at traveling wave fault location device.
Specifically, during work, staff can pass through 4 input fault shape information of parameter input unit, the fault wave
Shape information includes fault waveform data and standard failure position, under the control of a processor 2, fault waveform data is sent to letter
Number source generation unit 5, waveshape output signal is generated by signal source generation unit 5.
When a triggering condition is met, the satellite time synchronization unit 1 realizes synchronous triggering, meanwhile, in the control of processor 2
Under system, the waveshape output signal of the generation of signal source generation unit 5, which exports, gives traveling wave fault location device.Traveling wave fault location device
It is calculated according to the waveshape output signal received and obtains Fisrt fault position, and the Fisrt fault position is sent to signal and is connect
Receive unit 6.
The signal receiving unit 6 is additionally operable to receive the Fisrt fault position that traveling wave fault location device is sent, and by institute
It states Fisrt fault position and is sent to judging unit 7；Judging unit 7 is used to compare Fisrt fault position and standard failure position
Compared with, and comparison result is shown on a display screen.If the absolute value of the difference of Fisrt fault position and standard failure position is more than pre-
If threshold value, then comparison result is needs to verify, and otherwise, comparison result is does not need to verify.Predetermined threshold value can be according to actual conditions
It is configured, does not limit herein.
As shown in Fig. 2, it is illustrated by taking the verification of both-end traveling wave fault location device as an example below.In transmission line of electricity power transformation
Stand it is each setting one travelling wave ranging calibration equipment for automatically generating signal source, the both-end fault waveform that will be recorded in advance（It is known
Abort situation）It downloads in device, utilizes GPS satellite time synchronism apparatus（That is satellite time synchronization unit 11）Synchronous triggering
（Sectors rushes）, to export fault waveform data to traveling wave fault location device.Then traveling wave fault location device is received according to this side
To the fault traveling wave wave head that sends out of device and opposite end traveling wave fault location device the wavefront time difference t, Yi Jibo that send
Fast v, circuit overall length L, orient abort situation, the abort situation then are sent to calibration equipment, by the judgement of calibration equipment
Fisrt fault position and standard failure position are compared by unit 77, if the difference of Fisrt fault position and standard failure position
Absolute value is more than predetermined threshold value, and processor 22 sends alarm command to alarm unit 8, and alarm unit 8 receives processor 22 and sends out
After the alarm command sent, alarm signal is sent out, to warn staff, to achieve the purpose that verification.
Further, above-mentioned calibration equipment further includes the storage unit being connect with processor 2, and the storage unit is used to deposit
Store up the fault waveform information.
Further, above-mentioned calibration equipment further includes the wave shape playback unit being connect with processor 2, the wave shape playback list
Member is used to obtain the fault waveform data from the storage unit, and graphically showing the fault waveform data into
On the display screen.
Further, the processor 2 is the digital information processing system being made of DSP and FPGA.The system is on the one hand
Flash can be coordinated to realize the traveling wave data storage of large capacity（Maximum 512Kword）；On the other hand it can coordinate 14 high speeds
D/A realizes the high-speed transitions output of 512K data, so as to greatly improve and improve the transient response speed of tester and amplitude-frequency
Characteristic.
The highest D/A conversion frequencies of calibration equipment in the present embodiment can reach 25MHz；It can be by Comtrade forms
The current waveform data file of offer is shown to graphically, and provides certain graphic operation function, is observed convenient for user
Waveform；Can synchronous high-speed play back 6 road electric currents, output signal frequency is up to 500KHz；Excellent transient characterisitics, rise and fall
Time is less than 3 μ s；Support fault recurrence function：Software support Comtrade formatted data files, can carry out waveform processing and
Download output；Device plays back at a slow speed before supporting failure, longest playback duration 50s；Support fault waveform high-speed playback, highest playback
Sample rate 10MHz, most short playback duration period 80ms.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model
In the case of enclosing, various improvement can be carried out to it and component therein can be replaced with equivalent.Especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but all technical solutions including falling within the scope of the appended claims.
Claims (4)
1. a kind of travelling wave ranging calibration equipment for automatically generating signal source, which is characterized in that including satellite time synchronization unit, place
Reason device and display, parameter input unit, signal source generation unit, signal receiving unit and the judgement being connected to the processor
Unit；
Wherein, the parameter input unit is used for input fault shape information, and the fault waveform information includes fault waveform number
According to standard failure position；
The processor is used to that the signal will to be sent to by the fault waveform information that the parameter input unit inputs
Source generation unit；
The signal source generation unit is used to generate corresponding waveshape output signal according to the fault waveform information received；
The satellite time synchronization unit is used to implement synchronous triggering, is believed with being exported to traveling wave fault location device output waveform
Number, traveling wave fault location device is calculated according to waveshape output signal obtains Fisrt fault position, and by the Fisrt fault position
It is sent to signal receiving unit；
The signal receiving unit is used to receiving the Fisrt fault position that the traveling wave fault location device is sent, and by described the
One abort situation is sent to judging unit under the control of the processor；
The judging unit is used to Fisrt fault position and the standard failure position being compared, and on the display screen
Show judging result.
2. the travelling wave ranging calibration equipment according to claim 1 for automatically generating signal source, which is characterized in that further include with
The storage unit of processor connection, the storage unit are used to store the fault waveform information.
3. the travelling wave ranging calibration equipment according to claim 2 for automatically generating signal source, which is characterized in that further include with
The wave shape playback unit of processor connection, the wave shape playback unit are used to obtain the fault wave figurate number from storage unit
According to, and the fault waveform data are graphically shown on the display screen.
4. the travelling wave ranging calibration equipment according to claim 2 for automatically generating signal source, which is characterized in that the storage
Unit is 16 bit widths, the memory of the static random-access of 512K capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721700903.6U CN207541250U (en) | 2017-12-08 | 2017-12-08 | Automatically generate the travelling wave ranging calibration equipment of signal source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721700903.6U CN207541250U (en) | 2017-12-08 | 2017-12-08 | Automatically generate the travelling wave ranging calibration equipment of signal source |
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| Publication Number | Publication Date |
|---|---|
| CN207541250U true CN207541250U (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721700903.6U Expired - Fee Related CN207541250U (en) | 2017-12-08 | 2017-12-08 | Automatically generate the travelling wave ranging calibration equipment of signal source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117031382A (en) * | 2023-10-10 | 2023-11-10 | 云南电力试验研究院(集团)有限公司 | Single-ended traveling wave device verification method based on signal-to-noise ratio and sine fitting method |
-
2017
- 2017-12-08 CN CN201721700903.6U patent/CN207541250U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117031382A (en) * | 2023-10-10 | 2023-11-10 | 云南电力试验研究院(集团)有限公司 | Single-ended traveling wave device verification method based on signal-to-noise ratio and sine fitting method |
| CN117031382B (en) * | 2023-10-10 | 2024-02-20 | 云南电力试验研究院(集团)有限公司 | Single-ended traveling wave device verification method based on signal-to-noise ratio and sine fitting method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180626 Termination date: 20181208 |