CN106124932A - A kind of signal generator and use the method that this generator carries out cable fault test - Google Patents
A kind of signal generator and use the method that this generator carries out cable fault test Download PDFInfo
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- CN106124932A CN106124932A CN201610519924.1A CN201610519924A CN106124932A CN 106124932 A CN106124932 A CN 106124932A CN 201610519924 A CN201610519924 A CN 201610519924A CN 106124932 A CN106124932 A CN 106124932A
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- discharge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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- Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a kind of High-voltage Signal Generator, including high-voltage power supply, electric discharge device and electric capacity connecting wire switching device；Described electric capacity connecting wire switching device includes base plate, is arranged on the electric capacity patch panel above base plate and electric capacity wiring shifter；Described electric capacity wiring shifter includes series wiring module, Wiring module in parallel and series-parallel connection module；Described electric discharge device includes fork discharge and recharge mechanism and the drive mechanism driving fork discharge and recharge mechanism to swing；Described fork discharge and recharge mechanism includes positive pole fork, negative pole fork, charging fishplate bar and insulation barrier, and described insulation barrier is arranged between positive pole fork and negative pole fork.The method further relating to use this generator to carry out cable fault test.Having being kept completely separate of charging operations and discharge operation in charge and discharge process compared with prior art, charging process and discharge process are individually carried out, and do not have cross influence, it is ensured that the feature of the stability that whole equipment runs.
Description
Technical field
The present invention relates to a kind of signal generator, the method further relating to use this generator to carry out cable fault test.
Background technology
Recently the more than ten years, domestic construction develops on a large scale greatly, and the consumption of cable starts to expand rapidly, the most in recent years, a lot
City for urban, is implemented aerial line and is entered ground engineering, use cable in a large number, this just operation and maintenance to cable propose
Higher requirement.And due to the variation of client, the level of demand is different, the most original electric power system unitary demand to
Conglomerate, the direction of multi-level demand are developed.Such as electric power system, the cable that user selects is more and more longer, and sectional area is increasingly
Greatly, the tester of needs just requires bigger capacity, often selects external cable fault to test for some high-end users
Car, every cost is all in units up to a million.For the user that electric power system is prefecture-level, due to financial pressure, the often choosing that condition is good
Selecting domestic cable fault test carriage, selection almost uses portable set.According to the actual fact, even with electricity
The unit of cable test car also selects to add a set of portable electric cable failure detector.Often overlap portable failure tester one
As all at tens0000 yuans.For electric company at county level, it is typically chosen the fault test using several ten thousand to about 100,000
Instrument.For cable factory and industrial enterprise, owing to the consumption of cable is the biggest, more stress practicality, relatively big due to financial pressure again,
It is typically chosen the failure tester of often about 50,000 yuan of set.For community and rural area, select simple product, solve low-voltage cable
Simple fault.The tester of general all Optional Value about 2000 yuan.
The principle of cable fault test carriage detection is that the method using and increasing discharge energy improves detection efficiency, but it sets
Standby heavy, vehicle-mounted mode can only be used to shift, the area being restricted for some landform or road uses and is subject to
To great limitation.Being the mode using and reducing discharge energy for portable failure tester, its defect is that partial fault is surveyed
Away from difficulty, fixed point difficulty.
Make a general survey of electric cable failure detector both domestic and external and cable fault test carriage, during type cable failure positioning, be all to use people
The fix-point method of work on-site monitoring, the fixed point time is long, bad environments, and inefficiency needs Test Engineer above cable
Long-term monitoring, environment is poor, and labor intensity is high, and pressure is big, and the requirement to Field Force is higher, a bottle that really cable fault is tested
Neck ring saves.
Summary of the invention
The present invention relates to a kind of signal generator, the method further relating to use this generator to carry out cable fault test.
The technical scheme is that and be achieved in that: a kind of High-voltage Signal Generator, including high-voltage power supply and electric discharge device,
It is characterized in that: also include electric capacity connecting wire switching device；Described electric capacity connecting wire switching device includes base plate, is arranged on above base plate
Electric capacity patch panel and electric capacity wiring shifter；Described plate upper surface is connected with base, and described electric capacity patch panel is fixed in
On base, described electric capacity patch panel is provided with electric capacity output lead and organizes binding post more；Described electric capacity wiring shifter includes
Series wiring module, Wiring module in parallel and series-parallel connection module, described series wiring module includes push rod and pushes away with being fixed in
Series connection wiring board on bar, described Wiring module in parallel includes push rod and the wiring board in parallel being fixed on push rod, and described string is also
Tie module includes push rod and the connection in series-parallel wiring board being fixed on push rod, described series wiring module, Wiring module in parallel
It is rotationally connected with base plate respectively with series-parallel connection module；On described series connection wiring board, wiring board in parallel and connection in series-parallel wiring board
It is equipped with and the connecting groove of binding post respective amount；Described electric discharge device includes fork discharge and recharge mechanism and drives fork discharge and recharge
The drive mechanism that mechanism swings；Described fork discharge and recharge mechanism includes positive pole fork, negative pole fork, charging fishplate bar and insulation stop
Plate, described insulation barrier is arranged between positive pole fork and negative pole fork；Described positive pole fork bottom and negative pole fork bottom are divided
It is not rotatably installed on a bearing block, between described positive pole fork and negative pole fork, is provided with connecting shaft, described connecting shaft
Two ends are rotationally connected with positive pole fork and negative pole fork respectively；It is provided with discharge contact on described positive pole fork and negative pole fork
And charging contact, connecting between described discharge contact and charging contact and have capacitor connection line, described capacitor connection line is defeated with electric capacity
Outlet connects, and described discharge contact is connected with failure cable, and described charging contact is connected with charging fishplate bar, and described charging fishplate bar sets
Put on the track that charging contact swings place.
As preferred technical scheme, described often group binding post includes positive terminal and negative terminal, described positive pole
Binding post is connected with the positive pole of electric capacity, and described negative terminal is connected with the negative pole of electric capacity；Described electric capacity output lead includes positive pole
Electric capacity output lead and negative pole electric capacity output lead, described positive pole electric capacity output lead is connected with head end positive terminal, described negative electricity
Hold output lead to be connected with end negative terminal；Described positive terminal and negative terminal are respectively four, by four positive poles
Binding post and four negative terminals connect four electric capacity.
As preferred technical scheme, described series-parallel connection module is rotationally connected as described plate upper surface with base plate
Being connected with two clutch shaft bearing seats, connecting between two clutch shaft bearing seats has plate single shaft, described series-parallel connection module push rod
One end is rotationally connected with plate single shaft；Described Wiring module in parallel and series wiring module are rotationally connected as on base plate with base plate
Surface is connected with two the second bearing blocks, and connecting between two the second bearing blocks has plate transaxle, described Wiring module in parallel
Push rod one end and series wiring module push rod one end are all rotationally connected with plate transaxle, and Wiring module in parallel and series wiring
Module can be slided along the direction at plate transaxle place.
As preferred technical scheme, described connecting groove includes positive terminal groove and negative terminal groove, described positive terminal
Groove position is corresponding with positive terminal position, and described negative terminal groove position is relative with negative terminal position
Should；On described series connection wiring board, connected mode between connecting groove is series connection, company between connecting groove on described wiring board in parallel
The mode that connects is for parallel connection, and on described connection in series-parallel wiring board, the connected mode between connecting groove is that series and parallel combines.
As preferred technical scheme, described insulation barrier includes insulation barrier and lower insulation barrier, described upper insulation
Baffle plate is positioned at above connecting shaft, and described lower insulation barrier is positioned at below connecting shaft.
As preferred technical scheme, discharge contact and charging contact that described positive pole fork is provided with are respectively positive discharge
Contact and positive pole charging contact, the capacitor connection line between described positive discharge contact and positive pole charging contact is that positive pole electric capacity connects
Wiring, described positive pole capacitor connection line is connected with positive pole electric capacity output lead；Described positive discharge contact and the heart yearn of failure cable
Connect.
As preferred technical scheme, discharge contact and charging contact that described negative pole fork is provided with are respectively negative discharge
Contact and negative pole charging contact, the capacitor connection line between described negative discharge contact and negative pole charging contact is that negative pole electric capacity connects
Wiring, described negative pole capacitor connection line connects with negative pole electric capacity output lead；Described negative discharge contact is connected with ground wire.
As preferred technical scheme, described charging fishplate bar include positive pole charging fishplate bar and negative pole charging fishplate bar, described just
Pole charging fishplate bar is connected with the positive pole of high-voltage power supply, and described negative pole charging fishplate bar is connected with the negative pole of high-voltage power supply, and described positive pole charges
Contact is connected with positive pole charging fishplate bar, and described negative pole charging contact is connected with negative pole charging fishplate bar.
As preferred technical scheme, described drive mechanism includes motor, runner and push rod, key on described motor output shaft
Connect have runner, described runner is connected with connecting rod, described push rod one end is hinged with connecting rod, the other end of described push rod and
Connecting shaft is rotationally connected.
A kind of method applying High-voltage Signal Generator to carry out cable fault test, including following operating procedure:
1) electric capacity of 4 16 microfarads 10000v is attached with one group of binding post respectively, capacitor connection line and electric capacity output lead
Being attached, drive motor operating band movable pendulum bar discharge and recharge mechanism to do periodically swing, fork discharge and recharge mechanism runner rotates
One circle, fork discharge and recharge mechanism swing one back and forth, put by controlling to drive motor speed can control fork discharge and recharge mechanism
In the dynamic cycle, i.e. control discharge cycle length；When positive pole fork and negative pole fork are rocked to the charged area of side simultaneously, complete
Charging to electric capacity, the charging interval is 26-32s；Along with positive pole fork and the side oscillation the most round about of negative pole fork
During certain angle, charging contact disconnects with charging fishplate bar, and charging terminates；Positive pole fork and negative pole fork are rocked to separately simultaneously
During the region of discharge of side, the positive discharge contact on positive pole fork is connected with the heart yearn of failure cable, negative on negative pole fork
Pole discharge contact is connected with ground wire, and failure cable is discharged by electric capacity, impulse discharge energy 2000 joules, discharge time 0.3-
0.5s；
2) by the position of the type cable failure positioning system localization of faults；Type cable failure positioning system includes being placed on cable fault
Multiple stage fixed point apparatus near point and host platform；Every fixed point apparatus is provided with multiple sensors and can gather cable fault simultaneously
The multi-signal of some release, and the microprocessor being provided with in the signal detected is transferred to fixed point apparatus, entered by microprocessor
Row signal processing；Microprocessor is also associated with wireless transport module, can be transmitted by the way of being wirelessly transferred by data message
To host platform；Shown the signal of every fixed point apparatus respectively by host platform, host platform is carried out for the signal of multipoint acquisition
Show, analyze and process, compare, the position of the localization of faults；The sensor arranged on every fixed point apparatus includes gathering field signal
Coil, the vibrating sensor of collected sound signal and gather step voltage signal probe；
3) associated data analytical calculation is out of order a position, the direction of the step voltage localization of faults；Before trouble point, high
When pressing electricity, the potential difference in every meter of length is negative (High-voltage Signal Generator applying is negative high-voltage signal), illustrates
Before trouble point；After striding across trouble point, the potential difference in every meter of length becomes positive, from trouble point more close to, signal is the strongest；Magnetic field
Signal be also from trouble point more close to, signal is the strongest；The vibration signal of sound is then determined by sound magnetic time delay, and sound magnetic delay time is more
Short, from trouble point more close to；The sound of every fixed point apparatus accepts signal time will be within 90-100 millisecond；So, fixed point apparatus is attached
Vibration signal within nearly 30 meters can receive.Trouble point is within 30 meters, it is possible to detect.If there being two or more to visit
Head collects sound magnetic signal, can calculate the position of trouble point: the sound magnetic time delay of fixed point apparatus 1 is TI, the sound magnetic of fixed point apparatus 2
Time delay is T2;Owing to the spread speed in magnetic field is the light velocity, the spread speed of sound only has metre per second (m/s) more than 300, it is possible to approximation
Think that T1, T2 are exactly the propagation time;On the ground, trouble point is S1 to the distance of probe 1, and trouble point is to the distance of probe 2
For S2;The spacing assuming two fixed point apparatus is a rice, and the buried depth of cable is h rice, and sound when the spread speed in ground medium is being
V, then S1+S2=a, S12=V2*T12-h2；S22=V2*T22-h2, can calculate the position S1=of trouble pointS2=。
Owing to have employed technique scheme, the present invention has a beneficial effect highlighted below:
1, according to the needs to different electric pressures, selects the Wiring module that be connected use supporting with electric capacity patch panel, when with electricity
Holding the supporting Wiring module used that connects of patch panel is series wiring module, is now accomplished that four capacitances in series use, when
The be connected Wiring module that use supporting with electric capacity patch panel is Wiring module in parallel, is now accomplished that four electric capacity parallel connections make
With, when the be connected Wiring module that use supporting with electric capacity patch panel is series-parallel connection module, now it is accomplished that two electric capacity
In parallel and two capacitances in series use, and meet different electric pressure cables, when applying different high-voltage signals, and conversion difference
Capacitance, the demand that discharge energy is close.In the case of weight does not increases, under different voltage condition, discharge energy maximum
Need.
2, charging fishplate bar is arranged on the track at charging contact swing place, can be changed by the length changing charging fishplate bar
Become the charging duration to electric capacity.
3, provide power by motor, drive runner to rotate, runner promote push rod to do while rotating before and after periodically
Reciprocating motion, i.e. realize the periodic wobble of fork discharge and recharge mechanism.Fork can be changed by controlling the rotating speed of motor
Hunting period, i.e. change discharge cycle, it is not necessary to the equipment such as extra control circuit and the time relay are to discharge cycle
Being controlled, safety is higher, and equipment runs more stable.
4, fork discharge and recharge mechanism utilizes the periodic wobble of fork to carry out charge and discharge process, it is achieved that in charge and discharge process
Charging operations is kept completely separate with discharge operation, and charging process and discharge process are individually carried out, and do not have cross influence, it is ensured that
The stability that whole equipment runs, improves duration of service.
5, due to multiple fixed point apparatus gather be with a cable fault discharge signal, so the letter of each fixed point apparatus
Number reflection is the signal in same source of diverse location, and after excluding the interference signal, the dependency of signal is the best.Through multiple spot
The contrast of signal, analysis, calculate, the position of the energy quickly localization of faults.Substantially increase efficiency, reduce labor intensity.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is electric discharge device plan structure schematic diagram of the present invention.
Fig. 2 is fork of the present invention discharge and recharge mechanism structural representation.
Fig. 3 is electric capacity connecting wire switching device structural representation of the present invention.
Fig. 4 is electric capacity wiring shifter structural representation of the present invention.
Fig. 5 is annexation structural representation between electric capacity patch panel of the present invention and electric capacity.
In figure: 1-motor；2-runner；3-push rod；4-connecting rod；5-connecting shaft；6-positive pole fork；7-negative pole fork；8-
Bearing block；9-positive discharge contact；10-negative discharge contact；11-positive pole charging fishplate bar；12-negative pole charging fishplate bar；13-negative pole
Charging contact；14-positive pole charging contact；The upper insulation barrier of 15-；Insulation barrier under 16-；17-positive pole capacitor connection line；18-bears
Electrode capacitance connecting line；19-base plate；20-electric capacity patch panel；21-base；22-positive terminal；23-negative terminal；24-is just
Electrode capacitance output lead；25-negative pole electric capacity output lead；26-series wiring module；27-parallel connection Wiring module；28-series-parallel connection
Module；29-connects wiring board；30-parallel connection wiring board；31-connection in series-parallel wiring board；32-clutch shaft bearing seat；33-plate single shaft；
34-the second bearing block；35-plate transaxle.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
As shown in Fig. 1,2,3,4,5, the present invention includes high-voltage power supply, electric discharge device and electric capacity connecting wire switching device.
Described electric capacity connecting wire switching device includes base plate 19, be arranged on the electric capacity patch panel 20 above base plate 19 and electric capacity connects
Line shifter.Described base plate 19 upper surface is connected with base 21, and described electric capacity patch panel 20 is fixed on base 21.Described electricity
Holding and be provided with electric capacity output lead and organize binding post more on patch panel 20, described often group binding post includes positive terminal 22 and negative pole
Binding post 23, described positive terminal 22 is connected with the positive pole of electric capacity, and described negative terminal 23 is connected with the negative pole of electric capacity, institute
State electric capacity output lead and include positive pole electric capacity output lead 24 and negative pole electric capacity output lead 25, described positive pole electric capacity output lead 24 and head end
Positive terminal 22 connects, and described negative pole electric capacity output lead 25 is connected with end negative terminal 23.In prioritization scheme, described just
Pole binding post 22 and negative terminal 23 are respectively four, connect four by four positive terminals 22 and four negative terminals 23
Individual electric capacity.
Described electric capacity wiring shifter includes series wiring module 26, Wiring module 27 in parallel and series-parallel connection module
28, described series wiring module 26 includes push rod and the series connection wiring board 29 being fixed on push rod, described Wiring module 27 in parallel
Including push rod and the wiring board in parallel 30 being fixed on push rod, described series-parallel connection module 28 includes push rod and is fixed in push rod
On connection in series-parallel wiring board 31.Described series wiring module 26, Wiring module 27 in parallel and series-parallel connection module 28 respectively with
Base plate 19 is rotationally connected.In prioritization scheme, described series-parallel connection module 28 is rotationally connected as described base plate 19 with base plate 19
Upper surface is connected with two clutch shaft bearing seats 32, and connecting between two clutch shaft bearing seats 32 has plate single shaft 33, described connection in series-parallel
Wiring module 28 push rod one end is rotationally connected with plate single shaft 33.Described Wiring module 27 in parallel and series wiring module 26 and the end
Being rotationally connected of plate 19 is connected with two the second bearing blocks 34 for base plate 19 upper surface, and connecting between two the second bearing blocks 34 has
Plate transaxle 35, described Wiring module 27 push rod one end in parallel and series wiring module 26 push rod one end all with plate transaxle
35 are rotationally connected, and Wiring module 27 in parallel and series wiring module 26 can be slided along the direction at plate transaxle 35 place
Dynamic.
It is equipped with and binding post respective amount on described series connection wiring board 29, wiring board 30 in parallel and connection in series-parallel wiring board 31
Connecting groove 36, described connecting groove 36 includes positive terminal groove and negative terminal groove, described positive terminal groove position with just
Pole binding post 22 position is corresponding, and described negative terminal groove position is corresponding with negative terminal 23 position.Described series connection
On wiring board 29, connected mode between connecting groove 36 is series connection, connection side between connecting groove 36 on described wiring board 30 in parallel
Formula is in parallel, and on described connection in series-parallel wiring board 31, the connected mode between connecting groove 36 is that series and parallel combines.According to difference
The needs of electric pressure, select the Wiring module that be connected use supporting with electric capacity patch panel 20, when supporting with electric capacity patch panel 20
Connecting the Wiring module used is series wiring module 26, is now accomplished that four capacitances in series use, when with electric capacity wiring
Plate 20 supporting connect use Wiring module be parallel connection Wiring module 27, be now accomplished that four electric capacity are used in parallel, when with
The supporting Wiring module used that connects of electric capacity patch panel 20 is series-parallel connection module 28, is now accomplished that two electric capacity parallel connections
Use with two capacitances in series, meet the demand to different electric pressures.It can directly be entered by series-parallel connection module 28
Row rotates and is attached with electric capacity patch panel 20, when needs select series wiring module 26 or Wiring module 27 in parallel and electric capacity
When patch panel 20 is attached, can be by Wiring module 27 in parallel or series wiring module 26 along the side at plate transaxle 35 place
To sliding, the Wiring module of needs is made to slide to the position with electric capacity patch panel 20 place to corresponding, by parallel connection Wiring module
27 or series wiring module 26 rotate make remaining electric capacity patch panel 20 connect.
Described electric discharge device includes fork discharge and recharge mechanism and the drive mechanism driving fork discharge and recharge mechanism to swing.Described
Fork discharge and recharge mechanism includes positive pole fork 6, negative pole fork 7, charging fishplate bar and insulation barrier, and described insulation barrier is just arranged on
Between pole fork 6 and negative pole fork 7.Described positive pole fork 6 bottom and negative pole fork 7 bottom are rotatably installed in a bearing respectively
On seat 8, being provided with connecting shaft 5 between described positive pole fork 6 and negative pole fork 7, the two ends of described connecting shaft 5 are put with positive pole respectively
Bar 6 and negative pole fork 7 are rotationally connected.Described insulation barrier includes insulation barrier 15 and lower insulation barrier 16, described upper insulation
Baffle plate 15 is positioned at above connecting shaft 5, and described lower insulation barrier 16 is positioned at below connecting shaft 5, is just meeting by arranging insulation barrier
For the requirement of insulation distance between pole fork 6 and negative pole fork 7.It is provided with on described positive pole fork 6 and negative pole fork 7 and puts
Electric contact and charging contact, connect between described discharge contact and charging contact and have a capacitor connection line, described capacitor connection line with
Electric capacity output lead connects, and described discharge contact is connected with failure cable, and described charging contact is connected with charging fishplate bar, described charging
Fishplate bar is arranged on charging contact and swings on the track at place, can change the charging to electric capacity by the length changing charging fishplate bar
Duration.In prioritization scheme, described discharge contact is separately positioned on positive pole fork 6 and the top of negative pole fork 7, described charging contact
It is separately positioned on positive pole fork 6 and the hypomere of negative pole fork 7.
Discharge contact that described positive pole fork 6 is provided with and charging contact are respectively positive discharge contact 9 and positive pole charging is touched
Point 14, the capacitor connection line between described positive discharge contact 9 and positive pole charging contact 14 is positive pole capacitor connection line 17.Described
Discharge contact and charging contact that negative pole fork 7 is provided with are respectively negative discharge contact 10 and negative pole charging contact 13, described negative
Capacitor connection line between pole discharge contact 10 and negative pole charging contact 13 is negative pole capacitor connection line 18.Described positive pole electric capacity is even
Wiring 17 is connected with positive pole electric capacity output lead 24, and described negative pole capacitor connection line 18 is connected with negative pole electric capacity output lead 25.Described
Positive discharge contact 9 is connected with the heart yearn of failure cable, and described negative discharge contact 10 is connected with ground wire.
Described charging fishplate bar includes positive pole charging fishplate bar 11 and negative pole charging fishplate bar 12, and described positive pole charging fishplate bar 11 is with high
The positive pole of potential source connects, and described negative pole charging fishplate bar 12 is connected with the negative pole of high-voltage power supply, described positive pole charging contact 14 and positive pole
Charging fishplate bar 11 connects, and described negative pole charging contact 13 is connected with negative pole charging fishplate bar 12.
Described drive mechanism includes motor 1, runner 2 and push rod 3, described motor 1 output shaft is bonded and is connected to runner 2, institute
Stating and be connected with connecting rod 4 on runner 2, described push rod 3 one end is hinged with connecting rod 4, the other end of described push rod 3 and connecting shaft 5
It is rotationally connected.Thering is provided power by motor 1, drive runner 2 to rotate, runner 2 promotes push rod 3 to do before and after's cycle while rotating
The reciprocating motion of property, i.e. realizes the periodic wobble of fork discharge and recharge mechanism.Pendulum can be changed by controlling the rotating speed of motor 1
The hunting period of bar, i.e. change discharge cycle, it is not necessary to the equipment such as extra control circuit and the time relay are to electric discharge week
Phase is controlled, and safety is higher, and equipment runs more stable.
A kind of method applying High-voltage Signal Generator to carry out cable fault test, including following operating procedure:
1) electric capacity of 4 16 microfarads 10000v is attached with one group of binding post respectively, capacitor connection line and electric capacity output lead
Being attached, drive motor operating band movable pendulum bar discharge and recharge mechanism to do periodically swing, fork discharge and recharge mechanism runner rotates
One circle, fork discharge and recharge mechanism swing one back and forth, put by controlling to drive motor speed can control fork discharge and recharge mechanism
In the dynamic cycle, i.e. control discharge cycle length；When positive pole fork and negative pole fork are rocked to the charged area of side simultaneously, complete
Charging to electric capacity, the charging interval is 26-32s；Along with positive pole fork and the side oscillation the most round about of negative pole fork
During certain angle, charging contact disconnects with charging fishplate bar, and charging terminates；Positive pole fork and negative pole fork are rocked to separately simultaneously
During the region of discharge of side, the positive discharge contact on positive pole fork is connected with the heart yearn of failure cable, negative on negative pole fork
Pole discharge contact is connected with ground wire, and failure cable is discharged by electric capacity, impulse discharge energy 2000 joules, discharge time 0.3-
0.5s；
2) by the position of the type cable failure positioning system localization of faults；Type cable failure positioning system includes being placed on cable fault
Multiple stage fixed point apparatus near point and host platform；Every fixed point apparatus is provided with multiple sensors and can gather cable fault simultaneously
The multi-signal of some release, and the microprocessor being provided with in the signal detected is transferred to fixed point apparatus, entered by microprocessor
Row signal processing；Microprocessor is also associated with wireless transport module, can be transmitted by the way of being wirelessly transferred by data message
To host platform；Shown the signal of every fixed point apparatus respectively by host platform, host platform is carried out for the signal of multipoint acquisition
Show, analyze and process, compare, the position of the localization of faults；The sensor arranged on every fixed point apparatus includes gathering field signal
Coil, the vibrating sensor of collected sound signal and gather step voltage signal probe；By gathering the line of field signal
Circle, the shaking sensor of acoustical signal and step voltage signal probe to the field signal of failure cable, acoustical signal and across
Step voltage signal carries out multi-point and gathers simultaneously.
3) associated data analytical calculation is out of order a position, the direction of the step voltage localization of faults；Before trouble point,
During electrion, the potential difference in every meter of length is negative (High-voltage Signal Generator applying is negative high-voltage signal), explanation
Before trouble point；After striding across trouble point, the potential difference in every meter of length becomes positive, from trouble point more close to, signal is the strongest；Magnetic
Field signal be also from trouble point more close to, signal is the strongest；The vibration signal of sound is then determined by sound magnetic time delay, sound magnetic delay time
The shortest, from trouble point more close to；The sound of every fixed point apparatus accepts signal time will be within 90-100 millisecond；So, fixed point apparatus
Vibration signal within neighbouring 30 meters can receive.Trouble point is within 30 meters, it is possible to detect.If there being two or more
Probe collects sound magnetic signal, can calculate the position of trouble point: the sound magnetic time delay of fixed point apparatus 1 is TI, the sound of fixed point apparatus 2
Magnetic time delay is T2;Owing to the spread speed in magnetic field is the light velocity, the spread speed of sound only has metre per second (m/s) more than 300, it is possible near
As think that T1, T2 are exactly the propagation time;On the ground, trouble point to probe 1 distance be S1, trouble point to pop one's head in 2 away from
From for S2;The spacing assuming two fixed point apparatus is a rice, and the buried depth of cable is h rice, and sound is when the spread speed in ground medium
For V, then S1+S2=a, S12=V2*T12-h2；S22=V2*T22-h2, the position S1=of trouble point can be calculated
S2=。
When concrete operations are implemented, periodically swing, runner 2, under the driving effect of motor 1, do in fork discharge and recharge mechanism
Rotating a circle, fork discharge and recharge mechanism swings one back and forth.When positive pole fork 6 and negative pole fork 7 are rocked to filling of side simultaneously
During electricity region, i.e. charging contact contacts with the charging fishplate bar being arranged on the track of charging contact swing place, positive pole charging contact
14 are connected with positive pole charging fishplate bar 11, and described negative pole charging contact 13 is connected with negative pole charging fishplate bar 12, completes to fill electric capacity
Electricity.During along with a positive pole fork 6 and negative pole fork 7 side oscillation certain angle the most round about, charging contact and charging
Fishplate bar disconnects, and charging terminates, and is in, between now fork discharge and recharge mechanism and high-voltage power supply, the state of being fully disconnected.When positive pole is put
When bar 6 and negative pole fork 7 are rocked to the region of discharge of opposite side simultaneously, the positive discharge contact 9 on positive pole fork 6 and fault electricity
The heart yearn of cable connects, and the negative discharge contact 10 on negative pole fork 7 is connected with ground wire, and failure cable is discharged by electric capacity, with
Positive pole fork 6 and the periodic wobble of negative pole fork 7, discharge contact disconnects with failure cable, and electric discharge terminates, and now puts
Be in, between bar discharge and recharge mechanism and failure cable, the state of being fully disconnected, i.e. ground wire is also in off-state.Due to carry out
The moment of electric discharge, is off-state between fork discharge and recharge mechanism and high-voltage power supply, and high voltage will not feed back to high-voltage power supply, to high pressure
Source damages, it is ensured that control the properly functioning of part.Fork discharge and recharge mechanism utilizes the periodic wobble of fork to fill
Discharge process, it is achieved that being kept completely separate of charging operations and discharge operation in charge and discharge process, charging process and discharge process list
Solely carry out, do not have cross influence, it is ensured that the stability that whole equipment runs, improve duration of service.Traditional
Position determination of fault method is: high pressure equipment periodic discharging, and staff is repeatedly detected before and after the trouble point of cable, searches trouble point
Position.The method of the type cable failure positioning of innovation is: be placed around multiple fixed point apparatus, electrion equipment in Method of Cable Trouble Point
During electric discharge, multiple fixed point apparatus gather multi-signal respectively, and are transferred to host platform.Show that by host platform every is determined respectively
The signal of some instrument, and contrast, analyze, the position of the quick localization of faults.Due to multiple fixed point apparatus gather be with the most once electricity
The discharge signal of cable fault, so the signal reflection of each fixed point apparatus is the signal in same source of diverse location, gets rid of dry
After disturbing signal, the dependency of signal is the best.Through contrast, the analysis of multi-point signal, calculate, the position of the energy quickly localization of faults
Put.Substantially increase efficiency, reduce labor intensity.Before and after trouble point within 50 meters during fixed point, as long as placing 3 fixed point apparatus,
Just can substantially meet and realize trouble point electric discharge once, just can determine that the needs of the position of trouble point.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. a High-voltage Signal Generator, including high-voltage power supply and electric discharge device, it is characterised in that: also include electric capacity wiring conversion dress
Put；Described electric capacity connecting wire switching device includes base plate, is arranged on the electric capacity patch panel above base plate and electric capacity wiring shifter；
Described plate upper surface is connected with base, and described electric capacity patch panel is fixed on base, and described electric capacity patch panel is provided with electricity
Hold output lead and organize binding post more；Described electric capacity wiring shifter includes series wiring module, Wiring module in parallel and string also
Tie module, described series wiring module includes push rod and the series connection wiring board being fixed on push rod, described and tie mould
Block includes push rod and the wiring board in parallel being fixed on push rod, and described series-parallel connection module includes push rod and is fixed on push rod
Connection in series-parallel wiring board, described series wiring module, Wiring module in parallel and series-parallel connection module rotate even with base plate respectively
Connect；It is equipped with and the connecting groove of binding post respective amount on described series connection wiring board, wiring board in parallel and connection in series-parallel wiring board；Institute
State electric discharge device and include fork discharge and recharge mechanism and the drive mechanism driving fork discharge and recharge mechanism to swing；Described fork discharge and recharge
Mechanism includes positive pole fork, negative pole fork, charging fishplate bar and insulation barrier, and described insulation barrier is arranged on positive pole fork and negative pole
Between fork；Described positive pole fork bottom and negative pole fork bottom are rotatably installed on a bearing block respectively, and described positive pole is put
Being provided with connecting shaft between bar and negative pole fork, the two ends of described connecting shaft rotate even with positive pole fork and negative pole fork respectively
Connect；Discharge contact and charging contact, described discharge contact and charging contact it is provided with on described positive pole fork and negative pole fork
Between connect have capacitor connection line, described capacitor connection line to be connected with electric capacity output lead, described discharge contact and failure cable company
Connecing, described charging contact is connected with charging fishplate bar, and described charging fishplate bar is arranged on charging contact and swings on the track at place.
2. according to a kind of High-voltage Signal Generator described in claim 1, it is characterised in that: described often group binding post includes positive pole
Binding post and negative terminal, described positive terminal is connected with the positive pole of electric capacity, described negative terminal and the negative pole of electric capacity
It is connected；Described electric capacity output lead includes positive pole electric capacity output lead and negative pole electric capacity output lead, and described positive pole electric capacity output lead is with first
End positive terminal connects, and described negative pole electric capacity output lead is connected with end negative terminal；Described positive terminal and negative pole
Binding post is respectively four, connects four electric capacity by four positive terminals and four negative terminals.
3. according to a kind of High-voltage Signal Generator described in claim 2, it is characterised in that: described series-parallel connection module and the end
Being rotationally connected of plate is connected with two clutch shaft bearing seats for described plate upper surface, and connecting between two clutch shaft bearing seats has plate
Single shaft, described series-parallel connection module push rod one end is rotationally connected with plate single shaft；Described Wiring module in parallel and series wiring
Module and being rotationally connected of base plate are connected with two the second bearing blocks for plate upper surface, and connecting between two the second bearing blocks has
Plate transaxle, described Wiring module push rod one end in parallel and series wiring module push rod one end all rotate even with plate transaxle
Connect, and Wiring module in parallel and series wiring module can be slided along the direction at plate transaxle place.
4. according to a kind of High-voltage Signal Generator described in claim 3, it is characterised in that: described connecting groove includes positive terminal
Groove and negative terminal groove, described positive terminal groove position is corresponding with positive terminal position, described negative terminal groove institute
Corresponding with negative terminal position in position；On described series connection wiring board, the connected mode between connecting groove is series connection, described
On wiring board in parallel, the connected mode between connecting groove be parallel connection, connected mode between connecting groove on described connection in series-parallel wiring board
Combine for series and parallel.
5. according to a kind of High-voltage Signal Generator described in claim 4, it is characterised in that: described insulation barrier includes insulation
Baffle plate and lower insulation barrier, described upper insulation barrier is positioned at above connecting shaft, and described lower insulation barrier is positioned at below connecting shaft.
6. according to a kind of High-voltage Signal Generator described in claim 5, it is characterised in that: the electric discharge that described positive pole fork is provided with
Contact and charging contact are respectively positive discharge contact and positive pole charging contact, described positive discharge contact and positive pole charging contact
Between capacitor connection line be positive pole capacitor connection line, described positive pole capacitor connection line is connected with positive pole electric capacity output lead；Described
Positive discharge contact is connected with the heart yearn of failure cable.
7. according to a kind of High-voltage Signal Generator described in claim 6, it is characterised in that: the electric discharge that described negative pole fork is provided with
Contact and charging contact are respectively negative discharge contact and negative pole charging contact, described negative discharge contact and negative pole charging contact
Between capacitor connection line be negative pole capacitor connection line, described negative pole capacitor connection line and negative pole electric capacity output lead connect；
Described negative discharge contact is connected with ground wire.
8. according to a kind of High-voltage Signal Generator described in claim 7, it is characterised in that: described charging fishplate bar includes that positive pole fills
Electricity fishplate bar and negative pole charging fishplate bar, described positive pole charging fishplate bar is connected with the positive pole of high-voltage power supply, and described negative pole charging fishplate bar is with high
The negative pole of potential source connects, and described positive pole charging contact is connected with positive pole charging fishplate bar, and described negative pole charging contact charges with negative pole
Fishplate bar connects.
9. according to a kind of High-voltage Signal Generator described in any one in claim 1-8, it is characterised in that: described driving machine
Structure includes motor, runner and push rod, described motor output shaft is bonded and is connected to runner, and described runner is connected with connecting rod, institute
Stating push rod one end hinged with connecting rod, the other end of described push rod is rotationally connected with connecting shaft.
10. apply in claim 1-8 the side that the High-voltage Signal Generator described in any one carries out cable fault test for one kind
Method, it is characterised in that include following operating procedure:
1) electric capacity of 4 16 microfarads 10000v is attached with one group of binding post respectively, capacitor connection line and electric capacity output lead
Being attached, drive motor operating band movable pendulum bar discharge and recharge mechanism to do periodically swing, fork discharge and recharge mechanism runner rotates
One circle, fork discharge and recharge mechanism swing one back and forth, put by controlling to drive motor speed can control fork discharge and recharge mechanism
In the dynamic cycle, i.e. control discharge cycle length；When positive pole fork and negative pole fork are rocked to the charged area of side simultaneously, complete
Charging to electric capacity, the charging interval is 26-32s；Along with positive pole fork and the side oscillation the most round about of negative pole fork
During certain angle, charging contact disconnects with charging fishplate bar, and charging terminates；Positive pole fork and negative pole fork are rocked to separately simultaneously
During the region of discharge of side, the positive discharge contact on positive pole fork is connected with the heart yearn of failure cable, negative on negative pole fork
Pole discharge contact is connected with ground wire, and failure cable is discharged by electric capacity, impulse discharge energy 2000 joules, discharge time 0.3-
0.5s；
2) by the position of the type cable failure positioning system localization of faults；Type cable failure positioning system includes being placed on cable fault
Multiple stage fixed point apparatus near point and host platform；Every fixed point apparatus is provided with multiple sensors and can gather cable fault simultaneously
The multi-signal of some release, and the microprocessor being provided with in the signal detected is transferred to fixed point apparatus, entered by microprocessor
Row signal processing；Microprocessor is also associated with wireless transport module, can be transmitted by the way of being wirelessly transferred by data message
To host platform；Shown the signal of every fixed point apparatus respectively by host platform, host platform is carried out for the signal of multipoint acquisition
Show, analyze and process, compare, the position of the localization of faults；The sensor arranged on every fixed point apparatus includes gathering field signal
Coil, the vibrating sensor of collected sound signal and gather step voltage signal probe；
3) associated data analytical calculation is out of order a position, the direction of the step voltage localization of faults；Before trouble point, high pressure
During electric discharge, the potential difference in every meter of length is negative (High-voltage Signal Generator applying is negative high-voltage signal), illustrates in event
Before barrier point；After striding across trouble point, the potential difference in every meter of length becomes positive, from trouble point more close to, signal is the strongest；Magnetic field is believed
Number be also from trouble point more close to, signal is the strongest；The vibration signal of sound is then determined by sound magnetic time delay, and sound magnetic delay time is more
Short, from trouble point more close to；The sound of every fixed point apparatus accepts signal time will be within 90-100 millisecond；So, fixed point apparatus is attached
Vibration signal within nearly 30 meters can receive.Trouble point is within 30 meters, it is possible to detect.If there being two or more to visit
Head collects sound magnetic signal, can calculate the position of trouble point: the sound magnetic time delay of fixed point apparatus 1 is TI, and the sound magnetic of fixed point apparatus 2 prolongs
Time be T2；Owing to the spread speed in magnetic field is the light velocity, the spread speed of sound only has metre per second (m/s) more than 300, it is possible to approximation
Think that T1, T2 are exactly the propagation time；On the ground, trouble point is S1 to the distance of probe 1, and trouble point to the distance of probe 2 is
S2；The spacing assuming two fixed point apparatus is a rice, and the buried depth of cable is h rice, and sound is being V when the spread speed in ground medium,
Then S1+S2=a, S12=V2*T12-h2；S22=V2*T22-h2, the position of trouble point can be calculated
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| CN201610519924.1A CN106124932B (en) | 2016-07-04 | 2016-07-04 | A kind of signal generator and the method using generator progress cable fault test |
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Effective date of registration: 20210722 Address after: 255025 No. 79, Huaguang Road, Zhangdian, Zibo City, Shandong Province (room 416, Yinling International Business Center) Patentee after: Zibo xinyijie Electric Co.,Ltd. Address before: 255000 Room 102, unit 2, building 1, yard 4, West 2nd Lane, Liuquan Road, Zhangdian District, Zibo City, Shandong Province Patentee before: Zhang Yanhui |