CN207895061U - The single-ended travelling wave ranging check analysis instrument with touch screen control of four-way voltage-type - Google Patents

Abstract

The utility model discloses a kind of single-ended travelling wave ranging check analysis instrument with touch screen control of four-way voltage-type,Including host,Host front end face is equipped with touch display screen,Four tunnel voltage output interfaces,Single-ended 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 500ns,With very high checking precision.

Description

The single-ended travelling wave ranging check analysis instrument with touch screen control of four-way voltage-type

Technical field

The utility model is related to travelling wave ranging systems technology field, the specially single-ended band touch screen controls of four-way voltage-type 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 single-ended travelling wave ranging check analysis instrument with touch screen control of four-way voltage-type 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 single-ended travelling wave ranging verifications point with touch screen control of four-way voltage-type Analyzer, to solve the problems mentioned in the above background technology.

To achieve the above object, the utility model provides the following technical solutions：The single-ended band touch screen control of four-way voltage-type The travelling wave ranging check analysis instrument of system, including host, the host front end face is equipped with touch display screen, four tunnel voltage outputs connect Mouth, single-ended 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 modules, 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 processors are connected by internal bus Monolithic network interface chip, the monolithic network interface chip connect background computer；The fpga chip is separately connected FLASH moulds Block, SDRAM module, GPS module, D/A conversion module, optical fiber interface, 485 interfaces, Ethernet interface, spare interface, the DA turn It changes the mold block and 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 500ns.

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；

Traveling wave when Fig. 4 is the utility model single end distance measurement F point failures propagates schematic diagram；

Fig. 5 is the oscillogram at the utility model single end distance measurement circuit L beginning S.

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.

- 5 are please referred to Fig.1, the utility model provides a kind of technical solution：Four-way voltage-type it is single-ended with touch screen control Travelling wave ranging check analysis instrument, including host 1,1 front end face of the host are equipped with touch display screen 2, four tunnel voltage output interfaces 3, single-ended 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 at ARM Device 13 and core circuit plate are managed, the core circuit plate is equipped with fpga chip 14, monolithic network interface chip 15, FLASH moulds Block 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；The list Piece network interface chip 15 connects background computer 23；The fpga chip 14 be separately connected 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 DA conversions Module 19 connects voltage power amplifier module 20.

Wherein, touch display screen can be read out the data file of Comtrade formats, analyze, and data are downloaded It is exported to device.Touch screen major function has：The failure graphic fileization of Comtrade formats is shown and is played back by fault recurrence Failure；Fault simulation, manual setting line parameter circuit value and fault type carry out feeder line fault emulation；Waveform generates, and generates frequency The adjustable standard sine wave of rate 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 a traveling wave ranging device tester is arranged in transmission line of electricity substation, single-ended by what is recorded in advance 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 Wave wave head time difference t and velocity of wave v, circuit overall length L, orient abort situation, then with the abort situation phase of actual waveform Compare, to achieve the purpose that verification；The single-ended verification of traveling wave fault location device needs separate unit traveling wave ranging device tester i.e. Verification task can be completed, specific technical method is to obtain one-end fault waveform (known fault distance) first, by fault waveform It downloads in advance in traveling wave ranging device tester, analog voltage amount is changed by traveling wave ranging device tester is played back to and wait for school The traveling wave fault location device tested, obtains distance measurement result, and distance measurement result is compared with reference to fault waveform with verification, set if error is less than Fixed threshold value 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 500ns, 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 single-ended travelling wave ranging check analysis instrument with touch screen control of four-way voltage-type, including host (1), feature exists In：Host (1) front end face be equipped with touch display screen (2), four tunnel voltage output interfaces (3), single-ended 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 single-ended travelling wave ranging check analysis instrument with touch screen control of four-way voltage-type according to claim 1, 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 single-ended travelling wave ranging check analysis instrument with touch screen control of four-way voltage-type according to claim 1, It is characterized in that：The monolithic network interface chip (15) uses W5100.