CN207895060U - A kind of travelling wave ranging check analysis instrument that four-way is controlled with touch screen - Google Patents

Abstract

The utility model discloses the travelling wave ranging check analysis instrument that a kind of four-way is controlled with touch screen,Including host,Host front end face is equipped with touch display screen,Four road current output interfaces,Single-ended analog interface,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,Communication interface and switch,Host is internally provided with arm processor and core circuit plate,The utility model structural principle is simple,It is easy to use,Both it can have been carried out by the simulation waveform preset single-ended,Both-end verifies,The fault traveling wave signal that can be recorded again to range unit carries out reproduction inspection,Independent GPS/ Big Dippeves time synchronism apparatus is applied to the single-ended of traveling wave ranging device by the travelling wave ranging tester simultaneously,Double-end monitor,Error time is can be controlled within 300ns,With very high checking precision.

Description

A kind of travelling wave ranging check analysis instrument that four-way is controlled with touch screen

Technical field

The utility model is related to travelling wave ranging systems technology field, traveling wave that specially a kind of four-way is controlled with touch screen 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 four-way is controlled with touch screen is researched and developed in design, is realized to range unit Effective inspection, ensure the safe and stable operation of traveling wave fault location device, improve electricity net safety stable and economic operation level, It is of great significance.

Utility model content

The purpose of this utility model is to provide the travelling wave ranging check analysis instrument that a kind of four-way is controlled with touch screen, with Solve the problems mentioned above in the background art.

To achieve the above object, the utility model provides the following technical solutions：A kind of row that four-way is controlled with touch screen Wave ranging check analysis instrument, including host, the host front end face are equipped with touch display screen, four road current output interfaces, single-ended Analog interface, both-end analog interface and multiple indicator lights, it is defeated that the host backend face is equipped with switch value input interface, switching value Outgoing interface, optical fiber interface, power interface, communication interface and switch, the host are internally provided with arm processor 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, current/voltage power amplifier module, EEPROM module and button display module；The ARM processors are separately connected Fpga chip, EEPROM module and button display module, the arm processor connect monolithic network interface core by internal bus Piece, the monolithic network interface chip connect background computer；The fpga chip is separately connected FLASH modules, SDRAM module, GPS Module, D/A conversion module, optical fiber interface, communication interface, the D/A conversion module connect current/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, user Just, it not only can carry out single-ended, both-end by the simulation waveform preset to verify, but also the fault traveling wave that range unit is recorded can be believed Reproduction inspection number is carried out, while the travelling wave ranging tester surveys independent GPS/ Big Dippeves time synchronism apparatus applied to traveling wave Single-ended, double-end monitor away from device, error time are can be controlled within 300ns, have very high checking precision.

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：A kind of traveling wave survey that four-way is controlled with touch screen Away from check analysis instrument, including host 1,1 front end face of the host is equipped with touch display screen 2, four road current output interfaces 3, single-ended Analog interface 4, both-end analog interface 5 and multiple indicator lights, multiple indicator lights include power supply indicator 23, run indicator 24, malfunction indicator lamp 25, overheating indicator lamp 26；1 rear end face of the host is equipped with switch value input interface 6, output switch parameter connects Mouth 7, optical fiber interface 8, power interface 9, communication interface 10 and switch 11, the host 1 are internally provided with arm processor 12 and core Heart circuit board；The core circuit plate is equipped with fpga chip 13, monolithic network interface chip 14, FLASH modules 15, SDRAM Module 16, GPS module 17, D/A conversion module 18, current/voltage power amplifier module 19, EEPROM module 20 and button display module 21；The arm processor 12 is separately connected fpga chip 13, EEPROM module 20 and button display module 21, at the ARM It manages device 12 and monolithic network interface chip 14 is connected by internal bus, the monolithic network interface chip 14 connects background computer 22, 14 chip of monolithic network interface uses W5100；The fpga chip 13 is separately connected FLASH modules 15, SDRAM module 16, GPS Module 17, D/A conversion module 18, optical fiber interface 8, communication interface 10, the D/A conversion module 18 connect current/voltage power amplifier mould Block 19.

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, the both-end that will be recorded in advance is arranged in transmission line of electricity substation Fault waveform downloads in traveling wave ranging device tester, and triggering is synchronized to traveling wave fault using GPS, big-dipper satellite synchronizing device Range unit exports fault waveform.Then traveling wave fault location device can be sent out according to the traveling wave ranging device tester that this side receives The wavefront time difference t and velocity of wave v, circuit that the fault traveling wave wave head and offside traveling wave fault location device gone out is sent are total Long L orients abort situation, then compared with the abort situation of actual waveform, to achieve the purpose that verification；Traveling wave fault The single-ended verification of range unit needs separate unit traveling wave ranging device tester that verification task can be completed, and specific technical method is One-end fault waveform (known fault distance) is obtained 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 fault location device to be verified, obtains ranging knot Fruit, distance measurement result are compared with verification with reference to fault waveform, if error is less than the threshold value of setting, that is, indicate traveling wave fault to be detected Range unit is qualified, is otherwise unqualified.

First wavefront reaches single-ended or both ends range unit time difference when the utility model passes through simulated failure To examine the precision of range unit.Tester be directed to fault localization signal the characteristics of high speed D/A conversion and broadband, quickly Response current amplifier etc. has carried out special design, both can carry out single-ended, both-end school by the simulation waveform preset It tests, and the fault traveling wave signal that can be recorded to range unit carries out reproduction inspection, while the travelling wave ranging tester will be independent GPS/ Big Dipper time synchronism apparatus be applied to single-ended, the double-end monitor of traveling wave ranging device, error time can be controlled in 300ns Within, there is very high checking precision.

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 a kind of four-way is controlled with touch screen, including host (1), it is characterised in that：It is described Host (1) front end face is equipped with touch display screen (2), four road current output interfaces (3), single-ended analog interface (4), both-end and simulates and connect Mouthful (5) and multiple indicator lights, host (1) rear end face be equipped with switch value input interface (6), output switch parameter interface (7), Optical fiber interface (8), power interface (9), communication interface (10) and switch (11), the host (1) are internally provided with arm processor (12) and core circuit plate；The core circuit plate is equipped with fpga chip (13), monolithic network interface chip (14), FLASH Module (15), SDRAM module (16), GPS module (17), D/A conversion module (18), current/voltage power amplifier module (19), EEPROM module (20) and button display module (21)；The arm processor (12) is separately connected fpga chip (13), EEPROM Module (20) and button display module (21), the arm processor (12) connect monolithic network interface chip by internal bus (14), monolithic network interface chip (14) the connection background computer (22)；The fpga chip (13) is separately connected FLASH modules (15), SDRAM module (16), GPS module (17), D/A conversion module (18), optical fiber interface (8), communication interface (10), the DA Conversion module (18) connects current/voltage power amplifier module (19).

2. the travelling wave ranging check analysis instrument that a kind of four-way according to claim 1 is controlled with touch screen, feature exist In：Multiple indicator lights include power supply indicator (23), run indicator (24), malfunction indicator lamp (25), overheating indicator lamp (26).

3. the travelling wave ranging check analysis instrument that a kind of four-way according to claim 1 is controlled with touch screen, feature exist In：The monolithic network interface chip (14) uses W5100.