CN207965117U - The travelling wave ranging check analysis instrument that eight channel voltage type both-ends are controlled with touch screen - Google Patents

Abstract

The utility model discloses the travelling wave ranging check analysis instrument that a kind of eight channel voltages type both-end is controlled with touch screen,Including host,Host front end face is equipped with touch display screen,Eight tunnel voltage output interfaces,Both-end analog interface and multiple indicator lights,Host backend face is equipped with switch value input interface,Output switch parameter interface,Optical fiber interface,Power interface,485 interfaces,Ethernet interface,Spare interface and switch,Host is internally provided with arm processor and core circuit plate,The utility model structural principle is simple,Both it can have been carried out by the simulation waveform preset single-ended,The fault traveling wave signal that can be recorded again to range unit carries out reproduction inspection,Independent Big Dipper time synchronism apparatus is applied to the single-ended of traveling wave ranging device by the travelling wave ranging tester simultaneously,Error time is can be controlled within 200ns,With very high checking precision.

Description

The travelling wave ranging check analysis instrument that eight channel voltage type both-ends are controlled with touch screen

Technical field

The utility model is related to travelling wave ranging systems technology field, specially eight channel voltage type both-end band touch screens control Travelling wave ranging check analysis instrument.

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, a kind of travelling wave ranging check analysis instrument that eight channel voltages type both-end is controlled with touch screen is researched and developed in design, is realized Effective inspection to range unit ensures the safe and stable operation of traveling wave fault location device, improves electricity net safety stable and warp Help operation level, is of great significance.

Utility model content

The purpose of this utility model is to provide the travelling wave ranging verifications point that eight channel voltage type both-ends are controlled with touch screen Analyzer, to solve the problems mentioned in the above background technology.

To achieve the above object, the utility model provides the following technical solutions：Eight channel voltage type both-end band touch screen controls The travelling wave ranging check analysis instrument of system, including host, the host front end face is equipped with touch display screen, eight tunnel voltage outputs connect Mouth, both-end analog interface and multiple indicator lights, the host backend face is equipped with switch value input interface, output switch parameter connects Mouth, optical fiber interface, power interface, 485 interfaces, Ethernet interface, spare interface and switch, the host are internally provided at ARM Manage device and core circuit plate, the core circuit plate be equipped with fpga chip, monolithic network interface chip, FLASH modules, SDRAM module, GPS module, D/A conversion module, voltage power amplifier module, EEPROM module and button display module；At the ARM Reason device is separately connected fpga chip, EEPROM module and button display module, and the arm processor is connected single by internal bus Piece network interface chip, the monolithic network interface chip connect background computer；The fpga chip be separately connected FLASH modules, SDRAM module, GPS module, D/A conversion module, optical fiber interface, 485 interfaces, Ethernet interface, spare interface, the DA conversions Module connects voltage power amplifier module.

Preferably, multiple indicator lights include power supply indicator, run indicator, malfunction indicator lamp, overheating indicator lamp.

Preferably, the monolithic network interface chip uses W5100.

Compared with prior art, the utility model has the beneficial effects that：The utility model structural principle is simple, can both pass through The simulation waveform progress preset is single-ended, and the fault traveling wave signal that can be recorded to range unit carry out reproduction inspection, simultaneously Independent Big Dipper time synchronism apparatus is applied to the single-ended of traveling wave ranging device by the travelling wave ranging tester, and error time is controllable System has very high checking precision within 200ns.

Description of the drawings

Fig. 1 is the utility model front view；

Fig. 2 is the utility model rearview；

Fig. 3 is the utility model control principle block diagram；

Fig. 4 is the utility model both-end distance measuring schematic 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.

- 4 are please referred to Fig.1, the utility model provides a kind of technical solution：What eight channel voltage type both-ends were controlled with touch screen Travelling wave ranging check analysis instrument, including host 1,1 front end face of the host are equipped with touch display screen 2, eight tunnel voltage output interfaces 3, both-end analog interface 4 and multiple indicator lights, multiple indicator lights include that power supply indicator 24, run indicator 25, failure refer to Show lamp 26, overheating indicator lamp 27；1 rear end face of the host is equipped with switch value input interface 5, output switch parameter interface 6, optical fiber and connects Mouth 7, power interface 8,485 interfaces 9, Ethernet interface 10, spare interface 11 and switch 12, the host 1 are internally provided with ARM Processor 13 and core circuit plate, core circuit plate are equipped with fpga chip 14, monolithic network interface chip 15, FLASH modules 16, SDRAM module 17, GPS module 18, D/A conversion module 19, voltage power amplifier module 20, EEPROM module 21 and button are shown Module 22；The arm processor 13 is separately connected fpga chip 14, EEPROM module 21 and button display module 22, the ARM Processor 13 connects monolithic network interface chip 15 by internal bus, and monolithic network interface chip 15 uses W5100；Single mesh Network interface chip 15 uses W5100；The monolithic network interface chip 15 connects background computer 23；The fpga chip 14 is distinguished Connect FLASH modules 16, SDRAM module 17, GPS module 18, D/A conversion module 19, optical fiber interface 7,485 interfaces 9, Ethernet Interface 10, spare interface 11, the D/A conversion module 19 connect voltage power amplifier module 20.

In the utility model, touch display screen can be read out the data file of Comtrade formats, analyze, and will Data are downloaded to device output.Software major function has：Fault recurrence shows the failure graphic fileization of Comtrade formats And play back failure；Fault simulation, manual setting line parameter circuit value and fault type carry out feeder line fault emulation；Waveform generates, Generate the adjustable standard sine wave of frequency amplitude and square wave；The network parameters such as the IP address of device are arranged in network settings.

In the utility model, the inspection of traveling wave fault location device needs the Precise Diagnosis of traveling wave ranging device tester, Specific technical method is that two traveling wave ranging device testers, the both-end that will be recorded in advance is arranged in transmission line of electricity substation Fault waveform (known fault position) downloads in traveling wave ranging device tester, is synchronized and is triggered using big-dipper satellite synchronizing device (sectors punching) exports fault waveform to traveling wave fault location device.Then the row that traveling wave fault location device can be received according to this side The wavefront time difference that the fault traveling wave wave head and offside traveling wave fault location device that Wave ranging device tester is sent out are sent T and velocity of wave v, circuit overall length L, orient abort situation, then compared with the abort situation of actual waveform, to reach The purpose of verification；The both-end verification of traveling wave fault location device needs two traveling wave ranging device testers that verification times can be completed Business, specific technical method are to obtain both-end fault waveform (known fault distance) first, and fault waveform is downloaded to row in advance In Wave ranging device tester, analog voltage amount is changed by traveling wave ranging device tester and is played back to traveling wave fault to be verified Range unit obtains distance measurement result, and distance measurement result is compared with verification with reference to fault waveform, if error is less than the threshold value of setting, i.e., It indicates that traveling wave fault location device to be detected is qualified, is otherwise unqualified.

In conclusion the utility model structural principle is simple, it not only can be single-ended by the simulation waveform progress preset, but also can Reproduction inspection is carried out with the fault traveling wave signal recorded to range unit, while when the travelling wave ranging tester is by the independent Big Dipper Between synchronizing device be applied to the single-ended of traveling wave ranging device, error time is can be controlled within 200ns, has very high verification essence Degree.

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 (3)

1. the travelling wave ranging check analysis instrument that eight channel voltage type both-ends are controlled with touch screen, including host (1), feature exists In：Host (1) front end face be equipped with touch display screen (2), eight tunnel voltage output interfaces (3), both-end analog interface (4) and Multiple indicator lights, host (1) rear end face are equipped with switch value input interface (5), output switch parameter interface (6), optical fiber interface (7), power interface (8), 485 interfaces (9), Ethernet interface (10), spare interface (11) and switch (12), the host (1) It is internally provided with arm processor (13) and core circuit plate, the core circuit plate is equipped with fpga chip (14), monolithic network connects Mouth chip (15), FLASH modules (16), SDRAM module (17), GPS module (18), D/A conversion module (19), voltage power amplifier mould Block (20), EEPROM module (21) and button display module (22)；The arm processor (13) is separately connected fpga chip (14), EEPROM module (21) and button display module (22), the arm processor (13) connect single mesh by internal bus Network interface chip (15), monolithic network interface chip (15) the connection background computer (23)；The fpga chip (14) connects respectively Connect FLASH modules (16), SDRAM module (17), GPS module (18), D/A conversion module (19), optical fiber interface (7), 485 interfaces (9), Ethernet interface (10), spare interface (11), D/A conversion module (19) the connection voltage power amplifier module (20).

2. the travelling wave ranging check analysis instrument that eight channel voltages type both-end according to claim 1 is controlled with touch screen, It is characterized in that：Multiple indicator lights include power supply indicator (24), run indicator (25), malfunction indicator lamp (26), overheat instruction Lamp (27).

3. the travelling wave ranging check analysis instrument that eight channel voltages type both-end according to claim 1 is controlled with touch screen, It is characterized in that：The monolithic network interface chip (15) uses W5100.