CN207730922U - A kind of portable transient state travelling wave ranging tester - Google Patents
A kind of portable transient state travelling wave ranging tester Download PDFInfo
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- CN207730922U CN207730922U CN201820171710.4U CN201820171710U CN207730922U CN 207730922 U CN207730922 U CN 207730922U CN 201820171710 U CN201820171710 U CN 201820171710U CN 207730922 U CN207730922 U CN 207730922U
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- transient state
- travelling wave
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Abstract
The utility model discloses a kind of portable transient state travelling wave ranging testers, including host, host is equipped with display screen, control button is set below display screen, host side is equipped with network interface, optical fiber interface, RS232 interface, RS485 interfaces, host is internally provided with control circuit board, control circuit board is equipped with ARM modules, fpga chip, EEPROM module, 128MB FLASH modules, SDRAM module, the utility model structural principle is simple, device volume is small, it is easy to operate, Current Voltage binary channels exports, the double time dissemination systems of the GPS/ Big Dippeves, error time is can be controlled within 300ns, improve the efficiency and precision of traveling wave verification.
Description
Technical field
The utility model is related to ranging tester technical field, specially a kind of portable transient state travelling wave ranging tester.
Background technology
Travelling wave ranging system carries out fault localization to power system transmission line and calculates synthesis, fault point, for scheduling
Commanding carries out accident treatment, mitigates the working strength of live power transmission track walker, improve failure patrol extracting rate played it is important
Effect.But lack at present to the effective checksum test means of these traveling wave fault location devices, for traveling wave fault location
The onsite acceptance of device is completely dependent on the technological service of equipment supplier, and certain peace is brought for the reliability service of range-measurement system
Full hidden danger.Therefore, design researches and develops a set of traveling wave and surveys tester, realizes effective inspection to range unit, ensures that traveling wave fault is surveyed
Safe and stable operation away from device improves electricity net safety stable and economic operation level, is of great significance.
Utility model content
The purpose of this utility model is to provide a kind of portable transient state travelling wave ranging testers, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the utility model provides the following technical solutions：A kind of portable transient state travelling wave ranging verification
Instrument, including host, the host are equipped with display screen, control button are arranged below the display screen, the host side is equipped with
Network interface, optical fiber interface, RS232 interface, RS485 interfaces, the host are internally provided with control circuit board, the control circuit
Plate is equipped with ARM modules, fpga chip, network module, EEPROM module, 128MB FLASH modules, SDRAM module, described
ARM modules connect background computer by network module, and the ARM modules are separately connected EEPROM module, display screen and control button,
The ARM modules connect fpga chip by internal bus, and the fpga chip is separately connected 128MB FLASH modules, SDRAM
Module, optical fiber interface, RS232 interface, RS485 interfaces, the fpga chip connect voltage/current power amplifier by AD conversion module
Unit.
Preferably, 6 current output interfaces are additionally provided on the host；3 voltage output interfaces；6 indicator lights, are respectively used to
Power supply, startup, clock synchronization, overheat, open circuit and short circuit instruction；Single-ended analog interface, both-end analog interface and the GPS/ Big Dippeves pair are awarded
When antennal interface.
Preferably, the network module uses the monolithic network interface chip of model W5100.
Preferably, the SDRAM module uses 128M*16ddr2DRAM.
Compared with prior art, the utility model has the beneficial effects that：
(1) the utility model structural principle is simple, and device volume is small, easy to operate, Current Voltage binary channels exports, GPS/
The double time dissemination systems of the Big Dipper, error time are can be controlled within 300ns, improve the efficiency and precision of traveling wave verification.
(2) when the utility model is used, first wavefront reaches single-ended or both ends ranging dress when passing through simulated failure
The time difference set examines the precision of range unit.Tester is directed to the characteristics of fault localization signal in high speed D/A conversion and width
Frequency band, quick response current amplifier etc. have carried out special design, can both have been carried out by the simulation waveform preset single
End, both-end verification, but the fault traveling wave signal that can be recorded to range unit carries out reproduction inspection, while the travelling wave ranging verifies
Independent GPS/ Big Dippeves time synchronism apparatus is applied to single-ended, the double-end monitor of traveling wave ranging device by instrument, and error time is controllable
System has very high checking precision within 300ns.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is Tthe utility model system functional block diagram.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of portable transient state travelling wave ranging tester,
Including host 1, the host 1 is equipped with display screen 2, and control button 3 is arranged in 2 lower section of the display screen, and 1 side of the host is set
There are network interface 4, optical fiber interface 5, RS232 interface 6, RS485 interfaces 7, the host 1 is internally provided with control circuit board, described
Control circuit board is equipped with ARM modules 8, fpga chip 9, network module 10, EEPROM module 11,128MB FLASH modules
12, SDRAM module 13, the ARM modules 8 connect background computer 14 by network module 10, and network module 10 uses model
The monolithic network interface chip of W5100；The ARM modules 8 are separately connected EEPROM module 11, display screen 2 and control button 3,
The ARM modules 8 by internal bus connect fpga chip 9, the fpga chip 9 be separately connected 128MB FLASH modules 12,
SDRAM module 13, optical fiber interface 5, RS232 interface 6, RS485 interfaces 7, the fpga chip 9 are connected by AD conversion module 15
Connect voltage/current power amplifier unit 16；SDRAM module 13 uses 128M*16ddr2DRAM.
In the utility model, 6 current output interfaces 17 are additionally provided on host 1；3 voltage output interfaces 18；6 indicator lights
19, it is respectively used to power supply, startup, clock synchronization, overheat, open circuit and short circuit instruction；Single-ended analog interface 20, both-end analog interface 21 with
And the GPS/ Big Dipper pair time service antennas interface 22.
System principle：The inspection of traveling wave fault location device needs the Precise Diagnosis of traveling wave ranging device tester, specifically
Technical method be in each one traveling wave ranging device tester of setting of transmission line of electricity substation, in advance by the both-end recorded therefore
Barrier waveform (known fault position) downloads in traveling wave ranging device tester, is synchronized using GPS, big-dipper satellite synchronizing device tactile
It sends out (sectors punching) and exports fault waveform to traveling wave fault location device.Then traveling wave fault location device can be received according to this side
The wavefront time that the fault traveling wave wave head and offside traveling wave fault location device that traveling wave ranging device tester is sent out are sent
Poor t and velocity of wave v, circuit overall length L, orient abort situation, then compared with the abort situation of actual waveform, to reach
To the purpose of verification；The single-ended verification of traveling wave fault location device needs separate unit traveling wave ranging device tester that verification can be completed
Task, specific technical method are to obtain one-end fault waveform (known fault distance) first, and fault waveform is downloaded in advance
In traveling wave ranging device tester, simulation current flow is changed by traveling wave ranging device tester and is played back to traveling wave event to be verified
Hindering range unit, obtains distance measurement result, distance measurement result is compared with verification with reference to fault waveform, if error is less than the threshold value of setting,
It indicates that traveling wave fault location device to be detected is qualified, is otherwise unqualified.
When the utility model is used, first wavefront reaches single-ended or both ends range unit when passing through simulated failure
Time difference examines the precision of range unit.Tester is directed to the characteristics of fault localization signal in high speed D/A conversion and wideband
Band, quick response current amplifier etc. have carried out special design, can both be carried out by the simulation waveform preset it is single-ended,
Both-end verifies, and the fault traveling wave signal that can be recorded to range unit carries out reproduction inspection, while the travelling wave ranging tester
Independent GPS/ Big Dippeves time synchronism apparatus is applied to single-ended, the double-end monitor of traveling wave ranging device, error time is controllable
Within 300ns, there is very high checking precision.
In conclusion the utility model structural principle is simple, device volume is small, easy to operate, Current Voltage binary channels is defeated
Go out, the double time dissemination systems of the GPS/ Big Dippeves, error time is can be controlled within 300ns, improves the efficiency and precision of traveling wave verification.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of portable transient state travelling wave ranging tester, including host (1), it is characterised in that：The host (1) is equipped with aobvious
Display screen (2), display screen (2) the lower section setting control button (3), host (1) side is equipped with network interface (4), optical fiber
Interface (5), RS232 interface (6), RS485 interfaces (7), the host (1) are internally provided with control circuit board, the control circuit
Plate is equipped with ARM modules (8), fpga chip (9), network module (10), EEPROM module (11), 128MB FLASH modules
(12), SDRAM module (13), the ARM modules (8) connect background computer (14), the ARM modules by network module (10)
(8) it is separately connected EEPROM module (11), display screen (2) and control button (3), the ARM modules (8) are connected by internal bus
Fpga chip (9) is connect, the fpga chip (9) is separately connected 128MB FLASH modules (12), SDRAM module (13), optical fiber and connects
Mouth (5), RS232 interface (6), RS485 interfaces (7), the fpga chip (9) pass through AD conversion module (15) and connect voltage/electricity
Flow power amplifier unit (16).
2. a kind of portable transient state travelling wave ranging tester according to claim 1, it is characterised in that：The host (1)
On be additionally provided with 6 current output interfaces (17)；3 voltage output interfaces (18)；6 indicator lights (19), be respectively used to power supply, startup,
Clock synchronization, overheat, open circuit and short circuit instruction；Single-ended analog interface (20), both-end analog interface (21) and the double time services of the GPS/ Big Dippeves
Antennal interface (22).
3. a kind of portable transient state travelling wave ranging tester according to claim 1, it is characterised in that：The network module
(10) the monolithic network interface chip of model W5100 is used.
4. a kind of portable transient state travelling wave ranging tester according to claim 1, it is characterised in that：The SDRAM moulds
Block (13) uses 128M*16ddr2DRAM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820171710.4U CN207730922U (en) | 2018-01-31 | 2018-01-31 | A kind of portable transient state travelling wave ranging tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820171710.4U CN207730922U (en) | 2018-01-31 | 2018-01-31 | A kind of portable transient state travelling wave ranging tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207730922U true CN207730922U (en) | 2018-08-14 |
Family
ID=63080969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820171710.4U Active CN207730922U (en) | 2018-01-31 | 2018-01-31 | A kind of portable transient state travelling wave ranging tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207730922U (en) |
-
2018
- 2018-01-31 CN CN201820171710.4U patent/CN207730922U/en active Active
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