CN109444687A - A kind of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform - Google Patents
A kind of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform Download PDFInfo
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- CN109444687A CN109444687A CN201811359179.4A CN201811359179A CN109444687A CN 109444687 A CN109444687 A CN 109444687A CN 201811359179 A CN201811359179 A CN 201811359179A CN 109444687 A CN109444687 A CN 109444687A
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Abstract
This application discloses a kind of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform, which includes: surge voltage unit, Tower for Simulation line unit, power current source unit and data acquisition unit；Surge voltage unit is connected to the insulation column on the shaft tower of side by insulated conductor, and surge voltage unit provides analogue thunder-lighting impaction voltage for the insulated conductor on shaft tower；Power current source unit is connected to the insulation column on the shaft tower of the other side by third insulated conductor, power current source unit is used to generate analogue thunder-lighting impaction voltage when surge voltage unit and after the first preset time period, and the insulated conductor on shaft tower provides the power current of setting；Data acquisition unit is used to acquire the lightning surge and current in wire on insulated conductor.Lasting power current is provided for the electric arc of generation after analogue thunder-lighting impaction voltage breakdown insulation by the technical solution in the application, to improve the authenticity of lightning-caused breaking test.
Description
Technical field
This application involves the technical fields of lightning test, are struck by lightning in particular to a kind of 10kV power distribution network insulated conductor
Break analogue test platform.
Background technique
As the large area of distribution network is transformed, more and more distribution network lines transform insulated conductor as by bare conductor,
And for this power distribution network being made of insulated conductor, the main reason for lightning-caused breaking is engine distribution network failure.For existing
Distribution network, due on route there are lighting protection device, thunder-strike current on insulated circuit there are the time compared with
It is short, after the insulating layer of insulated circuit is breakdown, it is often as lasting power current, insulated circuit is caused to be blown, therefore,
The performance to the insulated conductor after lightning stroke is needed to study, to prevent from blowing insulated conductor because of power current.
And in the prior art, due to lacking corresponding lightning-caused breaking test platform, existing insulated conductor breakage caused by lightning stroke examination
Test be man-made division be two parts, a part is lightning impulse test, and a part is power current combustion test, passes through two
Part test studies the arc burning of insulated conductor as a result, such research technique, reduces the true of lightning-caused breaking test data
Reality and reliability can not provide effectively geographical by foundation for relevant lightning-caused breaking protective device.
Summary of the invention
The purpose of the application is: after discharging analogue thunder-lighting impaction voltage, lasting power frequency electric is provided for insulated conductor
Stream, to improve the authenticity of lightning-caused breaking test data.
The technical solution of the application is: a kind of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform is provided,
The analogue test platform includes: surge voltage unit, Tower for Simulation line unit, power current source unit and data acquisition unit；
Tower for Simulation line unit includes that at least three shaft towers, shaft tower is arranged successively, and the top of shaft tower is provided with insulation column, and adjacent two
Shaft tower is connected by insulated conductor, and insulated conductor is connected on insulation column；Surge voltage unit is connected to by insulated conductor
Insulation column on the shaft tower of side, surge voltage unit provide lightening strike simulating electricity for the insulated conductor on shaft tower
Pressure；Power current source unit is connected to the insulation column on the shaft tower of the other side by insulated conductor, and power current source unit is used
In when surge voltage unit generation analogue thunder-lighting impaction voltage and after the first preset time period, the insulation on shaft tower is led
Line provides the power current of setting；The first end of data acquisition unit is connected to surge voltage unit, and the of data acquisition unit
Two ends are connected to power current source unit, the lightning surge and flow through insulation that data acquisition unit is used to acquire on insulated conductor
Current in wire on conducting wire.
In any of the above-described technical solution, further, power current source unit is specifically included: first be arranged in groups
Switch, energy-storage capacitor and second switch, charge power supply and controller；Energy-storage capacitor is series at first switch and second and opens
Between pass, it is denoted as power current source, at least two groups power current source is successively in parallel, and the discharge end in power current source is connected to insulation
The charging end of conducting wire, power current source is connected to charge power supply；The first end of controller is connected to first switch, and the of controller
Two ends are connected to second switch, and controller is configured as controlling first switch closure according to charging instruction and disconnecting, controller is also
It is configured as being instructed according to electric discharge, successively controls second switch closure according to the second preset time period and disconnects.
In any of the above-described technical solution, further, further includes: reactor；Reactor is series at by insulated conductor
Between Tower for Simulation line unit and power current source unit.
In any of the above-described technical solution, further, data acquisition unit is specifically included: Rogowski coil, electric resistance partial pressure
Device, Fiber isolation acquisition unit and data display unit；Rogowski coil is passed through by insulated conductor, the data output of Rogowski coil
End is connected to the first input end of Fiber isolation acquisition unit, and Rogowski coil is used to detect the conducting wire electricity flowed through on insulated conductor
Stream；Resitstance voltage divider is connected between the discharge end of surge voltage unit and the ground terminal for the analogue test platform that breaks, resistance point
The data output end of depressor is connected to the second input terminal of Fiber isolation acquisition unit, and resitstance voltage divider is for detecting insulated conductor
On lightning surge；The output end of Fiber isolation acquisition unit is connected to the input terminal of data display unit, and Fiber isolation is adopted
The current in wire and lightning surge that collection unit is used to will test are transferred to data display unit after carrying out photoelectric conversion.
In any of the above-described technical solution, further, power current source unit, specifically further include: protection circuit unit；
Protection circuit unit is set to the output end of power current source unit, and protection circuit unit includes two voltage-stabilizing protection elements, fills
Capacitor and matching impedance, the first voltage-stabilizing protection element are connected with charging capacitor, and the second voltage-stabilizing protection element in parallel is in first
The both ends of voltage-stabilizing protection element and charging capacitor, matching impedance are parallel to the both ends of charging capacitor, and protection circuit unit is for preventing
Nurse's frequency current source cell is damaged because lightning surge is discharged breakdown.
In any of the above-described technical solution, further, further includes: anti-apparatus for descending；Anti- apparatus for descending includes insulated wire
And lock ring, one end of insulated wire are connected on shaft tower, the other end of insulated wire is connected to lock ring, and lock ring is set in insulated conductor
On, anti-apparatus for descending, which is used to disconnect post-tensioning in insulated conductor, lives insulated conductor.
In any of the above-described technical solution, further, the lock ring of anti-apparatus for descending is mounted on the two sides of insulation column, lock
The distance between ring and insulation column are 230mm to 270mm.
The beneficial effect of the application is:
Existing lightning-caused breaking simulation test, mainly using lightning impulse test and power frequency arc combustion test separate into
Row also has the case where replacing the power frequency continued flow of practical arcing using repeat impact current equivalence, can not simulate lightning-caused breaking
Overall process, i.e., first by the gap of surge voltage breakdown insulation column and the insulating layer of insulated conductor, then power current afterflow
Insulated conductor is blown, needs power frequency supply and impact power supply cooperation during the test, but general power frequency supply may be hit
Voltage is acted on and is damaged.And the application generates power current using capacitor group and reactor oscillation, has and is resistant to the electricity that is hit
The effect of pressure, while using the method for time cooperation, using multiple unit capacitor, successively switching, electric discharge, guarantee generate enough continue
The power current of duration, can effective analog insulation conducting wire the subsequent stream process of breakdown.
Existing test method can be used for the testing experiment of the lightning-caused breaking protective device of over-voltage, test whether
It can effective over-voltage.But for the device of another protection lightning-caused breaking, i.e., by preventing electric arc in insulated conductor
Upper a little persistently to burn arc, this test platform can not carry out, and use the test platform of the application that can carry out to this kind of device
Experimental test verifies the breaking line preventive effect of this kind of device.
Present application contemplates during test since high current acts on, the electromagnetic force that can be generated, insulated conductor after disconnecting
Occur to swing and may collide other equipment, damages, devise a kind of anti-apparatus for descending in shaft tower end, it can be after disconnecting
Insulated conductor is held, while considering lightning-caused breaking rule, guarantees installation site except the range that breaks, it is ensured that anti-fall after disconnecting
Ground device can effectively work.
Detailed description of the invention
The advantages of above-mentioned and/or additional aspect of the application, will become bright in combining description of the following accompanying drawings to embodiment
It shows and is readily appreciated that, in which:
Fig. 1 is the 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform according to one embodiment of the application
Schematic diagram；
Fig. 2 is the schematic diagram according to the protective current unit of one embodiment of the application；
Fig. 3 is the schematic diagram according to the anti-apparatus for descending of one embodiment of the application.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to be more clearly understood that the above objects, features, and advantages of the application
Mode is applied the application is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, many details are elaborated in order to fully understand the application, still, the application may be used also
To be implemented using other than the one described here other modes, therefore, the protection scope of the application is not by described below
Specific embodiment limitation.
Embodiment one:
Embodiments herein one is illustrated below in conjunction with Fig. 1 to Fig. 3.
As shown in Figure 1, present embodiments providing a kind of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform, mould
Quasi- test platform includes: surge voltage unit, Tower for Simulation line unit, power current source unit and data acquisition unit；Simulation
Tower line unit includes that at least three shaft towers 13, shaft tower 13 is arranged successively, and the top of shaft tower 13 is provided with insulation column 17, adjacent
Two shaft towers 13 are connected by insulated conductor 18, and insulated conductor 18 is connected on insulation column 17；Surge voltage unit passes through exhausted
Edge conducting wire 18 is connected to the insulation column 17 on the shaft tower 13 of side, and surge voltage unit is for the insulated conductor on shaft tower 13
18 provide analogue thunder-lighting impaction voltage；
Preferably, surge voltage unit specifically includes: impact ignition ball gap 8, capacitor group 16, wave front resistance 9, wave rear electricity
Resistance 10 and power supply 15；Impact ignition ball gap 8 is set to the discharge end of surge voltage unit, and impact ignition ball gap 8 passes through wave head electricity
Resistance 9 and wave terminal resistance 10 are connected to the ground terminal of surge voltage unit, and impact is provided between wave front resistance 9 and wave terminal resistance 10
The feeder ear of voltage cell, feeder ear are connected to power supply 15；Capacitor group 16 is parallel to the both ends of wave terminal resistance 10.
Specifically, when generating required analogue thunder-lighting impaction voltage by surge voltage unit, firstly, utilizing power supply 15
It charges to capacitor group 16, disconnects power supply 15 after charging complete, to prevent circuit discharging from generating impact to power supply 15.So
Afterwards, the resistance value of wave front resistance 9 and wave terminal resistance 10 is adjusted, to form the waveform of required analogue thunder-lighting impaction voltage, finally, adjusting
Ball gap after shock point in impact ignition ball gap 11, discharges, analogue thunder-lighting impaction voltage is transmitted to insulated conductor 18.
In the present embodiment, power current source unit is connected to the insulation on the shaft tower 13 of the other side by insulated conductor 18
Pillar 17, power current source unit are used for when surge voltage unit generates analogue thunder-lighting impaction voltage and process first is default
Between after section, the insulated conductor 18 on shaft tower 13 provides the power current of setting；
Further, power current source unit specifically includes: the first switch 1 that is arranged in groups, energy-storage capacitor 3 and
Two switches 11, charge power supply 2 and controller；Energy-storage capacitor 3 is series between first switch 1 and second switch 11, is denoted as work
Frequency current source, at least two groups power current source is successively in parallel, and the discharge end in power current source is connected to insulated conductor 18, power frequency electric
The charging end in stream source is connected to charge power supply 2；The first end of controller is connected to first switch 1, the second end connection of controller
In second switch 11, controller is configured as controlling the closure of first switch 1 according to charging instruction and disconnecting, controller is also matched
It is set to and is instructed according to electric discharge, successively control the closure of second switch 11 according to the second preset time period and disconnect.
Specifically, first switch 1, energy-storage capacitor 3 and second switch 11 are connected, forms one group of power current source, then
The multiple groups power current source of formation is subjected to parallel connection, to form power current source unit, is provided using power current source unit
When lasting power current, firstly, controller controls first switch 1 and is closed, charge power supply 2 is accessed according to charging instruction, benefit
It is charged with charge power supply 2 to energy-storage capacitor 3, after charging complete, controller disconnects first switch 1 and then works as shock point
Fireball gap 8 discharges analogue thunder-lighting impaction voltage, and after the first preset time period T1, controller is instructed according to electric discharge, second
In preset time period T2, the second switch 11 controlled in first group of power current source is closed, by first group of power current source
Energy-storage capacitor 3 provides lasting power current to Tower for Simulation line unit, after discharging after a period of time, controller control first
Second switch 11 in group power current source disconnects, the second switch 11 in second group of power current source is closed, by second group of work
Energy-storage capacitor 3 in frequency current source continues to provide lasting power current to Tower for Simulation line unit, is successively opening third group
Power current source provides lasting power current to realize in the second preset time period T2 for Tower for Simulation line unit.
Wherein it is possible to discharge power frequency to power current unit to realize by adjusting charge power supply 15 and energy-storage capacitor 3
The adjusting of current values.
Further, simulation experiment platform further include: reactor 4；Reactor 4 is series at Tower for Simulation by insulated conductor 18
Between line unit and power current source unit.
Specifically, the energy-storage capacitor 3 in reactor and power current source unit forms oscillation circuit, can reduce absolutely
In edge conducting wire while the steepness of voltage, additionally it is possible to play a protective role to power current source unit, it is real to further increase simulation
Test the safety of platform.
In the present embodiment, the first end of data acquisition unit is connected to surge voltage unit, and the of data acquisition unit
Two ends are connected to power current source unit, the lightning surge and flow through absolutely that data acquisition unit is used to acquire on insulated conductor 18
Current in wire on edge conducting wire 18.
Further, data acquisition unit specifically includes: Rogowski coil 5, resitstance voltage divider 7, Fiber isolation acquisition unit
6 and data display unit 12；Rogowski coil 5 is passed through by insulated conductor 18, and the data output end of Rogowski coil 5 is connected to optical fiber
The first input end of acquisition unit 6 is isolated, Rogowski coil 5 is for detecting the current in wire flowed through on insulated conductor 18；Resistance point
Depressor 7 is connected between the discharge end of surge voltage unit and the ground terminal for the analogue test platform that breaks, the number of resitstance voltage divider 7
The second input terminal of Fiber isolation acquisition unit 6 is connected to according to output end, resitstance voltage divider 7 is for detecting on insulated conductor 18
Lightning surge；The output end of Fiber isolation acquisition unit 6 is connected to the input terminal of data display unit 12, Fiber isolation acquisition
The current in wire and lightning surge that unit 6 is used to will test are transferred to data display unit 12 after carrying out photoelectric conversion.
Specifically, Rogowski coil 5 is set on insulated conductor 18, for detecting the conducting wire electricity flowed through on insulated conductor 18
Stream, and the current in wire that will test is transferred to Fiber isolation acquisition unit 6.In the discharge end of surge voltage unit, resistance is set
Divider 7, for detecting the lightning surge on insulated conductor, and the lightning surge that will test is transferred to Fiber isolation and adopts
Collect unit 6.Fiber isolation acquisition unit 6 carries out photoelectric signal transformation to the current in wire and lightning surge received, then will
Acquisition signal after conversion is transferred to data display unit 12, such as oscillograph, carries out data output, to data display unit 12 into
Row protection introduces data display unit 12 to avoid high pressure.
Further, power current source unit is specific further include: protection circuit unit；Protection circuit unit is set to power frequency
The output end of current source cell, protection circuit unit include two voltage-stabilizing protection elements, capacitor 23 and matching impedance 24, first
Voltage-stabilizing protection element 21 is connected with capacitor 23, and the second voltage-stabilizing protection element 22 is parallel to the first voltage-stabilizing protection element 21 and capacitor 23
Both ends, matching impedance 24 is parallel to the both ends of capacitor 23, and protection circuit unit is for protecting power current source unit because of thunder and lightning
Overvoltage is burned out.
Specifically, as shown in Fig. 2, the output end of power current unit is arranged in protection circuit unit, for power frequency electric
Stream source carries out abnormal big voltage protection, wherein the first voltage-stabilizing protection element 21 and the second voltage-stabilizing protection element 22 play voltage clamp
The effect of position, the withstanding voltage of the first voltage-stabilizing protection element 21 work as circuit less than the withstanding voltage of the second voltage-stabilizing protection element 22
When middle generation overcurrent, the first voltage-stabilizing protection element 21 is first turned on, and is charged to capacitor 23, and it is steep that matching impedance 24 can slow down impact
Degree, 23 voltage of capacitor increase, when the voltage of capacitor 23 and the first voltage-stabilizing protection element 21 and greater than the second voltage-stabilizing protection element 22
Withstanding voltage, the second voltage-stabilizing protection element 22 conducting, i.e., overvoltage energy can be discharged from two branches.It charges in capacitor 23
After the completion, after voltage reaches certain value, 21 both ends withstanding voltage of the first voltage-stabilizing protection element is reduced, the first voltage-stabilizing protection element 21
Shutdown.
Further, as shown in figure 3, simulation experiment platform further include: anti-apparatus for descending；Anti- apparatus for descending includes insulated wire
25 and lock ring 26, one end of insulated wire 25 be connected on shaft tower 13, the other end of insulated wire 25 is connected to lock ring 26,26 sets of lock ring
It is located on insulated conductor 18, anti-apparatus for descending is used to hold insulated conductor 18 after the disconnection of insulated conductor 18.
Further, the lock ring 26 of anti-apparatus for descending is mounted on the two sides of insulation column 17, lock ring 26 and insulation column 17
The distance between be 230mm to 270mm.
Preferably, simulation experiment platform further include: image acquiring device 14, image acquiring device is for obtaining insulated conductor
Corresponding status image when 18 transmission lightning surges and current in wire.
Embodiment two:
On the basis of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform in above-described embodiment one, the mould
Multiple groups Tower for Simulation line unit can also be arranged in draft experiment platform, and when being arranged between Tower for Simulation line unit and power current unit
Sequence control unit, by timing control unit according to third preset time period control multiple groups Tower for Simulation line unit and power current unit
Between conducting improve and be struck by lightning simulated after the lightning stroke of multiple groups insulated conductor simultaneously through the comparative test of lasting power current
Break the efficiency tested.
Preferably, which is provided with multiple groups Tower for Simulation line unit, analogue test platform further include: timing control
Unit processed；Timing control unit is set between Tower for Simulation line unit and power current unit, and timing control unit is configured as
The conducting between multiple groups Tower for Simulation line unit and power current unit is controlled according to third preset time period.
Specifically, two groups of Tower for Simulation line units are arranged on analogue test platform, and third preset time period is divided into
One turn-on time section td1 and the second turn-on time section td2, i.e., in the first turn-on time section td1, timing control unit is configured as
It by first group of Tower for Simulation line unit and second group of Tower for Simulation line unit, while being connected with power current unit, by power current list
Member carries out power current power supply to two groups of Tower for Simulation line units, and when reaching the second turn-on time section td2, timing control unit is matched
It is set to and disconnects the first Tower for Simulation line unit and power current unit, and keep the second Tower for Simulation line unit and power current unit
Conducting is continued to ask that the second Tower for Simulation line unit carries out power current power supply by power current unit, to realize while obtain two kinds
Test data of the different insulative conducting wire in lightning-caused breaking improves test efficiency.
The technical solution for having been described in detail above with reference to the accompanying drawings the application, present applicant proposes a kind of insulation of 10kV power distribution network
Conducting wire lightning-caused breaking analogue test platform, comprising: surge voltage unit, Tower for Simulation line unit, power current source unit and number
According to acquisition unit；Tower for Simulation line unit includes that at least three shaft towers, shaft tower is arranged successively, and the top of shaft tower is provided with insulation branch
Column, two adjacent shaft towers are connected by insulated conductor, and insulated conductor is connected on insulation column；Surge voltage unit passes through exhausted
Edge conducting wire is connected to the insulation column on the shaft tower of side, and surge voltage unit provides simulation for the insulated conductor on shaft tower
Lightning impulse voltage；Power current source unit is connected to the insulation column on the shaft tower of the other side, power frequency electric by insulated conductor
Source unit is flowed to be used for when surge voltage unit generation analogue thunder-lighting impaction voltage and after the first preset time period, to shaft tower
On insulated conductor provide setting power current；The first end of data acquisition unit is connected to surge voltage unit, and data are adopted
The second end of collection unit is connected to power current source unit, and data acquisition unit is used to acquire the lightning surge on insulated conductor
With the current in wire flowed through on insulated conductor.It is after discharging analogue thunder-lighting impaction voltage by the technical solution in the application
Insulated conductor provides lasting power current, to improve the authenticity of lightning-caused breaking test data.
Step in the application can be sequentially adjusted, combined, and deleted according to actual needs.
Unit in the application device can be combined, divided and deleted according to actual needs.
Although disclosing the application in detail with reference to attached drawing, it will be appreciated that, these descriptions are only exemplary, not
For limiting the application of the application.The protection scope of the application may include not departing from this Shen by appended claims
It please be in the case where protection scope and spirit for various modifications, remodeling and equivalent scheme made by inventing.
Claims (7)
1. a kind of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform, which is characterized in that the simulation experiment platform,
It include: surge voltage unit, Tower for Simulation line unit, power current source unit and data acquisition unit；
The Tower for Simulation line unit includes at least three shaft towers (13), and the shaft tower (13) is arranged successively, the shaft tower (13)
Top is provided with insulation column (17), and the shaft tower (13) of adjacent two is connected by insulated conductor (18), and the insulation is led
Line (18) is connected on the insulation column (17)；
The surge voltage unit is connected to the insulation on the shaft tower (13) of side by the insulated conductor (18)
Pillar (17), the surge voltage unit provide simulation thunder and lightning punching for the insulated conductor (18) on the shaft tower (13)
Hit voltage；
The power current source unit is connected to described on the shaft tower (13) of the other side by the insulated conductor (18)
Insulation column (17), the power current source unit be used for when the surge voltage unit generate analogue thunder-lighting impaction voltage and
After the first preset time period, the insulated conductor (18) on Xiang Suoshu shaft tower (13) provides the power current of setting；
The first end of the data acquisition unit is connected to the surge voltage unit, and the second end of the data acquisition unit connects
It is connected to the power current source unit, the data acquisition unit is used to acquire the lightning surge on the insulated conductor (18)
With flow through the current in wire on the insulated conductor (18).
2. 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform as described in claim 1, which is characterized in that described
Power current source unit, specifically includes: first switch (1), energy-storage capacitor (3) and the second switch (11) being arranged in groups,
Charge power supply (2) and controller；
The energy-storage capacitor (3) is series between the first switch (1) and the second switch (11), is denoted as power current
Source, power current source described at least two groups is successively in parallel, and the discharge end in the power current source is connected to the insulated conductor
(18), the charging end in the power current source is connected to the charge power supply (2)；
The first end of the controller is connected to the first switch (1), and the second end of the controller is connected to described second
It switchs (11), the controller is configured as controlling the first switch (1) closure according to charging instruction and disconnecting, the control
Device processed is additionally configured to be instructed according to electric discharge, successively controls the second switch (11) closure according to the second preset time period and breaks
It opens.
3. 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform as claimed in claim 2, which is characterized in that also wrap
It includes: reactor (4)；
The reactor (4) is series at the Tower for Simulation line unit by the insulated conductor (18) and the power current source is single
Between member.
4. 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform as described in claim 1, which is characterized in that described
Data acquisition unit specifically includes: Rogowski coil (5), resitstance voltage divider (7), and Fiber isolation acquisition unit (6) and data are aobvious
Show unit (12)；
The Rogowski coil (5) is passed through by the insulated conductor (18), and the data output end of the Rogowski coil (5) is connected to institute
The first input end of Fiber isolation acquisition unit (6) is stated, the Rogowski coil (5) flows through the insulated conductor (18) for detecting
On the current in wire；
The resitstance voltage divider (7) is connected to the discharge end of the surge voltage unit and connecing for the broken string analogue test platform
Between ground terminal, the data output end of the resitstance voltage divider (7) is connected to the second input of the Fiber isolation acquisition unit (6)
End, the resitstance voltage divider (7) are used to detect the lightning surge on the insulated conductor (18)；
The output end of the Fiber isolation acquisition unit (6) is connected to the input terminal of the data display unit (12), the light
The current in wire and the lightning surge that fibre isolation acquisition unit (6) is used to will test transmit after carrying out photoelectric conversion
To the data display unit (12).
5. 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform as described in claim 1, which is characterized in that described
Power current source unit, specifically further include: protection circuit unit；
The protection circuit unit is set to the output end of the power current source unit, and the protection circuit unit includes two
Voltage-stabilizing protection element, charging capacitor (23) and matching impedance (24),
First voltage-stabilizing protection element (21) is connected with the charging capacitor (23), and the second voltage-stabilizing protection element (22) is parallel to described
The both ends of first voltage-stabilizing protection element (21) and the charging capacitor (23), the matching impedance (24) are parallel to the charging electricity
Hold the both ends of (23), the protection circuit unit is for protecting the power current source unit because the lightning surge is discharged
Puncture and damages.
6. 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform as described in claim 1, which is characterized in that also wrap
It includes: anti-apparatus for descending；
The anti-apparatus for descending includes insulated wire (25) and lock ring (26), and one end of the insulated wire (25) is connected to the shaft tower
(13) on, the other end of the insulated wire (25) is connected to the lock ring (26), and the lock ring (26) is set in the insulation and leads
On line (18), the anti-apparatus for descending, which is used to disconnect post-tensioning residence in the insulated conductor (18), states insulated conductor (18).
7. 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform as claimed in claim 6, which is characterized in that described
The lock ring (26) of anti-apparatus for descending is mounted on the two sides of the insulation column (17), the lock ring (26) and insulation branch
The distance between column (17) is 230mm to 270mm.
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| CN201811359179.4A CN109444687B (en) | 2018-11-15 | 2018-11-15 | 10kV distribution network insulated conductor lightning stroke broken string simulation test platform |
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| CN201811359179.4A CN109444687B (en) | 2018-11-15 | 2018-11-15 | 10kV distribution network insulated conductor lightning stroke broken string simulation test platform |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161292A (en) * | 2019-04-30 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | A kind of distribution line ground fault voltage signal acquisition device |
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| CN110231553A (en) * | 2019-07-12 | 2019-09-13 | 电子科技大学 | A kind of motor slot insulation electric field impact appraisal procedure and assessment device |
| CN110231553B (en) * | 2019-07-12 | 2024-04-09 | 电子科技大学 | Motor slot insulation electric field impact evaluation method and evaluation device |
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| CN111044809B (en) * | 2019-11-16 | 2022-07-26 | 国网浙江宁波市奉化区供电有限公司 | Test method for measuring maximum protection distance of lightning protection device |
| CN113049903A (en) * | 2021-03-26 | 2021-06-29 | 安徽得倍安检测技术有限公司 | Experimental device and method for testing lightning rod protection angle |
| CN113917268A (en) * | 2021-10-19 | 2022-01-11 | 中国电信股份有限公司 | Simulation lightning voltage generator and automatic reclosing lightning protection capability testing device |
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