CN103542814A

CN103542814A - UHV (ultrahigh voltage) transmission line subspan measuring method and device

Info

Publication number: CN103542814A
Application number: CN201310478597.6A
Authority: CN
Inventors: 马军; 徐栋; 苗利敏; 杨郭明; 杨志荣
Original assignee: MAINTAINANCE Co OF GANSU ELECTRIC POWER Corp; State Grid Corp of China SGCC; State Grid Gansu Electric Power Co Ltd
Current assignee: MAINTAINANCE Co OF GANSU ELECTRIC POWER Corp; State Grid Corp of China SGCC; State Grid Gansu Electric Power Co Ltd
Priority date: 2013-10-14
Filing date: 2013-10-14
Publication date: 2014-01-29

Abstract

The invention discloses an UHV (ultrahigh voltage) transmission line subspan measuring method and device. The UHV transmission line subspan measuring device comprises a wire travelling wheel (1), a hook-shaped framework (2), a photoelectric pulse counter (5) and a controller (3). The wire travelling wheel (1) is installed in a U-shaped hook of the hook-shaped framework (2) through an axle; the photoelectric pulse counter (5) is electrically connected with the controller (3); the wire travelling wheel (1) rolls on a wire (4). An operator moving on the overhead wire (4) drives the subspan measuring device to move through a pull rope, and the photoelectric pulse counter (5) records pulse information of rolling of the wire travelling wheel (1) from the start, so that travelling distance can be accurately determined, and the subspan is therefore determined so as to facilitate inspection, mounting or adjustment of spacer rods.

Description

A kind of UHV transmission line time span measuring method and device

Technical field

The invention belongs to UHV transmission line technical field, relate to a kind of method and device of measuring UHV transmission line time span distance.

Background technology

The whole nation is being built extra-high voltage, EHV transmission network energetically at present, and numerous items has entered construction and acceptance phase, is badly in need of wanting various constructions and survey instrument.Conductor spacer in UHV transmission line is the critical elements of overhead transmission line, and its effect is the relative motion between siding stopping wire and the geometric configuration that keeps split conductor under normal operation; Inferior span is exactly the distance between adjacent spaces rod, inferior span plays vital effect for the safe operation of electrical network, but extremely inconvenience is determined in the installation site of the measurement of inferior span and conductor spacer, the accuracy that guarantees time span distance becomes frequent and important task in transmission line construction, operation maintenance work, is also the difficult problem that in producing at present, urgent need will solve.Power system security is produced the required distance of inferior span is more and more come into one's own, more and more higher to the requirement of surveying instrument.

At present, range observation for inferior span is still the conventional approach that adopts lining rope substantially, this way lining rope and insulation measurement tool wear are large, and often after measuring a strain section, lining rope is scrapped substantially, and measurement efficiency is very low, measuring error large, Work tool acquisition cost is high.Although scientific research personnel has done many-sided unremitting effort, still there is no desirable online charged quantitative measurment time span method at present both at home and abroad.

Summary of the invention

Object of the present invention designs a kind of UHV transmission line time span measurement mechanism exactly, and the method for a kind of novel measurement time span is provided, and operating personnel can facilitate on the aerial condutor of high-altitude, time span of charged quantitative measurment accurately.

Technical scheme of the present invention is: design a kind of UHV transmission line time span measurement mechanism, comprise wire road wheel, hook framework, it is characterized in that: also comprise photoimpact counter and controller; On the spoke of wire road wheel, be provided with light hole, in the circumferential rim of wire road wheel, have metallic channel; The upper end of hook framework is U-shaped hook, and lower end is fixedly connected with controller, and wire road wheel is arranged in the U-shaped hook of hook framework by wheel shaft; Photoimpact counter is fixed on the outside of the U-shaped hook of hook framework; Photoimpact counter is electrically connected to controller; Controller comprises central processing unit, interface circuit, signal shaping amplification module, pulse counter module, keyboard interface module, display unit module and direct supply;

An inferior span measuring method, is characterized in that: the wire road wheel with light hole on spoke coils as range finding, on wire, rolls; Photoimpact counter records wire road wheel rolls and produces pulse signal on wire, and controller CPU pulse signals detects, and according to the mathematical relation of pulse and actual range, calculates the distance that wire road wheel is passed by; When operating personnel move on high altitude wire, with stay cord, drive UHV transmission line time span measurement mechanism to move, open from the off controller starter gear counting, just can accurately measure time span;

The shell of controller adopts aluminium alloy to make, lightweight, can prevent electromagnetic interference (EMI).

The invention has the beneficial effects as follows:

UHV transmission line time span measurement mechanism hangs over walking on wire can obtain travel distance accurately; Meet start counting, warning function demand puts in place; Possesses digital display function to check at any time the distance of having passed through; The distance that puts in place can manually be set; Online detection do not have a power failure; Applicable to extra-high voltage, UHV (ultra-high voltage) different conductor, conductor spacer pattern, and reach the feature such as light and handy, easy to use.

Accompanying drawing explanation

Fig. 1 is structural front view of the present invention;

Fig. 2 is structure left view of the present invention;

Fig. 3 is measuring principle block diagram of the present invention;

Fig. 4 is pulse signal shaping amplification circuit schematic diagram.

In figure: 1-wire road wheel; 2-hook framework; 3-controller; 4-wire; 5-photoimpact counter; 6-wheel shaft; 7-light hole.

Embodiment

As shown in Figure 1 and Figure 2, UHV transmission line time span measurement mechanism, comprises wire road wheel 1, hook framework 2, also comprises photoimpact counter 5 and controller 3; In the circumferential rim of wire road wheel 1, have metallic channel, the upper end of hook framework 2 is U-shaped hook, and in order to conducting wire road wheel 1, bottom is fixedly connected with controller 3 machineries; Wire road wheel 1 is arranged in the U-shaped hook of hook framework 2 by wheel shaft 6, the bottom shape of the metallic channel of wire road wheel 1 coordinates with the external diameter of wire 4, the upper opening of metallic channel, the height of opening is greater than the diameter of wire 4, is convenient to wire and is not easy in metallic channel; Wire road wheel 1 is hung and can on wire 4, be rolled by metallic channel; Along with the movable conducting wire road wheel 1 of hook framework 2 rolls on wire 4; On the spoke of wire road wheel 1, be provided with light hole 7, photoimpact counter 5 is arranged on the outside of the U-shaped hook of hook framework 2, the optical information that sensor wire road wheel 1 rolls along wire 4; Photoimpact counter 5 is electrically connected to the pulse counter module of controller 3;

Controller 3 comprises microprocessor CPU, interface circuit, signal shaping amplification module, pulse counter module, keyboard interface module, display unit module and direct supply etc., can arrange, shows, warning etc.;

Be illustrated in figure 3 measuring principle block diagram of the present invention, wire road wheel 1 rolls on wire 4 as range finding dish, on the spoke of wire road wheel 1, be provided with light hole 7, photoimpact counter 5 receives the photoimpact information that wire road wheel 1 rolls and forms on wire 4, after shaping is amplified, microprocessor CPU carries out analytical calculation to information, draws the distance that wire road wheel 1 rolls on wire 4.Range observation principle is in fixing distance, and meter is got the pulse number that speed probe produces, thereby calculates actual range, suppose that every centimetre of pulse producer transfers out p pulse, meter is got the pulse number m of umber of pulse sensor output, when recording m value, just can calculate actual range, S=m/p.

The keyboard being connected on controller 3 can carry out operation setting, start or close controller 3, and keyboard is used for being set to the distance of positions from functions such as, data zero clearings; The display screen being connected on controller 3 shows the information such as travel distance and parameter arrange in real time.

Be illustrated in figure 4 pulse signal shaping amplification circuit schematic diagram, range finding dish will be apart from being transformed into electric impulse signal, and through LM324 integrated transporting discharging, shaping drives this signal, delivers to microprocessor CPU and carries out step-by-step counting, thereby measure the distance that range finding dish rotates.

The microprocessor of the embodiment of the present invention adopts C8051F340 single-chip microcomputer.The resource that the advantage of this single-chip microcomputer is that speed is fast, program's memory space is large, carry RAM abundance, I/O mouth in sheet is compared with horn of plenty.Its technical indicator can meet the design needs of native system completely.Its concrete technical indicator is: 1) during the clock frequency of 48MHZ, speed can reach 48MIPS; 2) the FLASH flash memory of 64KB; Sector-size 512B; 3) 40 I/O mouth lines, total interface line all can bear 5V voltage; 4) hardware SMBUS, SPI and the UART that can use simultaneously; 5) 4 general 16 digit counters/timers; 6) two serial port functions.

Photoimpact counter 5 is arranged on the outside of the U-shaped hook of configuration framework 2, on the spoke of wire road wheel 1, be provided with a plurality of light holes 7, range finding dish as photoimpact counter 5, wire road wheel 1 rolls on wire 4, photoimpact counter 5 detects the light signal of light hole 7 rotations on wire road wheel 1 and converts photoelectric pulse signal to, photoimpact counter 5 is electrically connected to controller 3, and photoelectric pulse signal shaping is transported to microprocessor single-chip microcomputer after amplifying and counts; The microprocessor pulse signals of controller 3 detects, and according to the mathematical relation of pulse and actual range, calculates the distance that wire road wheel 1 is passed by, thereby can determine the travel distance of wire road wheel 1 on wire; When operating personnel move on high altitude wire 4, with stay cord, drive UHV transmission line time span measurement mechanism to move, open from the off starter gear counting, just can accurately measure the inferior span of distance between conductor spacer.On controller 3, be provided with keyboard, there is demonstration and warning function, can use in advance keyboard to arrange controller 3, to distance Time Controller 3 promptings of setting, report to the police, operating personnel just can check and install or adjust conductor spacer, by the Presentation Function of controller 3, operating personnel can check the distance of passing by any time.

The shell of controller 3 adopts aluminium alloy to make, lightweight, can prevent electromagnetic interference (EMI).

Claims

1. a UHV transmission line time span measurement mechanism, comprises wire road wheel (1), hook framework (2), it is characterized in that: also comprise photoimpact counter (5) and controller (3); On the spoke of wire road wheel (1), be provided with light hole (7), in the circumferential rim of wire road wheel (1), have metallic channel; The upper end of hook framework (2) is U-shaped hook, and lower end is fixedly connected with controller (3), and wire road wheel (1) is arranged in the U-shaped hook of hook framework (2) by wheel shaft (6); Photoimpact counter (5) is fixed on the outside of the U-shaped hook of hook framework (2); Photoimpact counter (5) is electrically connected to controller (3); Controller (3) comprises microprocessor, interface circuit, signal shaping amplification module, pulse counter module, keyboard interface module, display unit module and direct supply.

2. a UHV transmission line time span measuring method, is characterized in that: on spoke with the wire road wheel (1) of light hole (7) as range finding dish, roll wire (4) is upper; Photoimpact counter (5) records wire road wheel (1) and produces pulse signal upper rolling of wire (4), and controller (3) pulse signals detects, and according to the mathematical relation of pulse and actual range, calculates the distance that wire road wheel (1) is passed by; Operating personnel drive UHV transmission line time span measurement mechanism to move with stay cord when high altitude wire (4) is above mobile, open from the off controller (3) starter gear counting; With the keyboard to set up of controller (3) put in place distance, data clear operation; With the display screen of controller (3), show in real time travel distance and parameter setting information.

3. a kind of UHV transmission line according to claim 1 time span measurement mechanism, bag is characterized in that: the shell of controller (3) adopts aluminium alloy to make, lightweight, can prevent electromagnetic interference (EMI).