CN107192906A - Voltage's distribiuting experimental system in a kind of lower ground of bipolar board test impact - Google Patents
Voltage's distribiuting experimental system in a kind of lower ground of bipolar board test impact Download PDFInfo
- Publication number
- CN107192906A CN107192906A CN201710394078.XA CN201710394078A CN107192906A CN 107192906 A CN107192906 A CN 107192906A CN 201710394078 A CN201710394078 A CN 201710394078A CN 107192906 A CN107192906 A CN 107192906A
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- voltage
- copper
- module
- host computer
- distribiuting
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
Abstract
The invention discloses one kind using voltage's distribiuting experimental system in the lower ground of bipolar board test impact, dash current occurs module 202 and constitutes loop by copper rod group and grounded screen 13；Host computer 204 occurs module 202 with dash current and the signal of high-speed data acquisition mould card 205 is connected；Bipolar plates voltage acquisition module 0 surveys voltage signal by the conveying of the host computer 204 of high-speed data acquisition mould card 205, and above-mentioned all modules constitute a full experiment system；Copper rod group is in series by flat type copper wire 11 by many copper rods；Grounded screen 13 is placed in the home position that flat type copper wire 11 encloses border circular areas.Bipolar plates voltage acquisition module can be placed any direction in ground in the present apparatus, and arrangement is convenient, and by carrying out monitoring to electric current in earth's surface both direction simultaneously, accuracy is higher.
Description
Technical field
Voltage's distribiuting experimental system in the lower ground of bipolar board test impact is utilized the present invention relates to one kind.The invention further relates to one
Plant the computational methods of the surface potential gradient applied to the device.
Background technology
Tower grounding net plays rapid drainage fault current, lightning current, reduces shaft tower current potential, it is ensured that neighbouring equipment and the person
The effect of safety, is an important guarantee of power system reliability service, simultaneously because the earth has certain resistivity, electric current enters
Certain potential occurs in the place that place and electric current are flowed through.Certain current potential will be presented in the earth's surface that thunder and lightning is flowed near place
Distribution, if now just having human or animal near lightning strike spot, due to standing or walking between different 2 points, this 2 points of earth's surface
Potential difference act on human or animal, be likely to result in injures and deaths.
The Potential distribution to earth's surface does not have effective monitoring method at present, is typically only capable to measure in the ground in a direction scattered
Stream, earth's surface Potential distribution is inferred by diffusing situation in ground, and operating process is complicated, and accuracy is low, in specific implementation process very
It is inconvenient.Therefore, it is necessary to develop a set of experimental system that can be measured under impact earth's surface electric potential gradient.
The content of the invention
Voltage's distribiuting experimental system, the device in the lower ground of bipolar board test impact are utilized it is an object of the invention to provide one kind
It can realize that simulation obtains the situation of surface potential near grounded screen during the devices such as thunderbolt transmission tower, arrester, and this is complete
Whole experimental system is adapted to any weather condition, and any Geography monitor device is to placement direction no requirement (NR), and arrangement is convenient.This hair
Bright another object is to provide a kind of method that application said apparatus calculates electric potential gradient waveform in ground.
The technical problem of the present invention is mainly what is be addressed by following technical proposals：
One kind utilizes voltage's distribiuting experimental system, power frequency supply module 201 and impact electricity in the lower ground of bipolar board test impact
Stream occurs module 202 and is electrically connected；Dash current occurs module 202 and constitutes loop by copper rod group and grounded screen 13；On
Position machine 204 occurs module 202 with dash current and the signal of high-speed data acquisition mould card 205 is connected；Bipolar plates voltage acquisition module 0
Voltage signal is surveyed by the conveying of the host computer 204 of high-speed data acquisition mould card 205, above-mentioned all modules constitute a full experiment
System；The copper rod group is in series by flat type copper wire 11 by many copper rods.
Bipolar plates voltage acquisition module 0 two prescription shape copper polar plates by being made up of, and every group of pole plate is at right angles supported by insulating bar,
Every group of copper coin by the square copper coin of two panels by insulating bar support phase to thirty years of age, be welded with insulated conductor above every copper coin；Bipolar plates
Current collecting device is placed on below earth's surface, and plane where copper sheet is perpendicular to the ground, and placed angle is any；Grounded screen 13 is placed in flat copper
Line 11 encloses the home position of border circular areas.
Power frequency supply module has the advantages that portability capacity is big, and applicable elements are not limited by landform and weather, and
For the dash current in the experimental system occur module, host computer, high-speed data acquisition mould card provide stablize lasting 50Hz,
220V power-frequency voltage.
The high-speed data acquisition mould card integrated resistor network, analog switch, operational amplification circuit, filter circuit and A/D
Analog to digital conversion circuit, electrical isolation module, embedded MCU and bus system, have the advantages that the high real time data acquisition of precision；Examine
It is below tens KHz lightning waves to consider most of lightning current energy accumulating in frequency, it is considered to the high-speed data acquisition mould card
Selection sample frequency is 50Msample/s, and passage is 2 passages, and each passage incoming end passes through signal cable and bipolar plates voltage
Acquisition module is connected.Export two ways of digital signals u1(t)、u2(t)；The high-speed figure capture card by USB interface with it is described upper
Machine transmits data.
The host computer keeps data communication with the high-speed data card, and the signal received is stored in host computer memory
In, storage, extraction, data program calculation and the plot and display of data are carried out by the LABVIEW softwares in host computer, coordinates described
Surge voltage calculating formula is in bipolar plates voltage collecting device, groundThis algorithm is programmed real by LABVIEW
It is existing；
The host computer is powered by the power frequency supply module；Because this experimental system can be used for outdoor test, on
Position machine has compared with stiff stability, and server enclosure is covered by metal, is electromagnetically shielded；
The bipolar plates voltage acquisition module is made up of two prescription shape copper polar plates, and two groups of copper coins are orthogonal exhausted by a pair
The support of edge bar is fixed, every group of copper coin by the square copper coin of two panels by insulating bar support phase to thirty years of age, be welded with above every copper coin absolutely
Edge wire；Bipolar plates voltage acquisition module is placed in the border circular areas surrounded in ground with flat copper ground wire, and device is placed on earth's surface,
Placed angle is any.
Due to the utilization of above-mentioned technical proposal, the present invention has advantages below compared with prior art：
1) ground connection earth's surface can be accurately measured because surface potential caused by dash current is distributed, and changes over time song
Line, and to the placement direction no requirement (NR) of bipolar plates voltage acquisition module, the surface potential gradient of all directions, arrangement side can be measured
Just；
2) main operation is completed with control host computer, with reference to LABVIEW softwares to the extraction of data, programmed process and figure
Shape is drawn and can obtain any time potential change waveform；
3) experimental provision is easy to operate, safe and reliable.
Brief description of the drawings
Accompanying drawing 1 utilizes voltage's distribiuting system experimentation system circuit diagram in bipolar board test ground for the present invention is a kind of；
Accompanying drawing 2 is high speed data acquisition module card of the present invention；
Accompanying drawing 3 is bipolar plates voltage collecting device structural representation in the present invention
Description of reference numerals：
201st, power frequency supply module, 202, dash current occur module, 12, copper rod, 13, grounded screen, 11, flat copper
Line, 10, insulating frame ceases to be busy, 204, host computer, 200, high-speed data acquisition mould card, 0, bipolar plates voltage acquisition module, 203, number
According to cable, 205, insulated conductor, 01, insulated conductor, 02, copper coin, 03, M3 copper gaskets, 04, the threaded asphalt mixtures modified by epoxy resin of straight ends
Fat support, 05,11 letter disk head screws, 06, bilateral nylon column hexagonal internal thread insulated column；
Embodiment
Voltage's distribiuting experimental system in the lower ground of bipolar board test impact, including work are utilized it is an object of the invention to provide one kind
Module, copper rod, grounded screen, flat copper ground wire, insulating frame ceases to be busy, host computer, high speed number occur for frequency power module, dash current
According to collection mould card, bipolar plates voltage acquisition module；Above-mentioned all modules constitute a full experiment system, and convenient and efficient can be used
In experimental analysis.A kind of computational methods of voltage's distribiuting in impact ground for depending on this development system are provided in the present invention simultaneously.
In order that the present invention can be better understood from using the personnel of the present apparatus, the present invention is carried out below in conjunction with the accompanying drawings detailed
Thin explanation.
With reference to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 utilizes voltage's distribiuting system experimentation system in bipolar board test ground for the present invention is a kind of
System circuit diagram；Fig. 2 is high speed data acquisition module card of the present invention；Fig. 3 is bipolar plates voltage collecting device structural representation.
In specific implementation, the inside of power frequency supply module 201 includes battery, inverter, wave filter, uses power frequency supply
Access 220v, 50Hz civil power is needed to charge it before module 201；Battery is output as direct current, turns by inverter
The alternating current containing clutter is turned to, is passing through the final power frequency supply module output frequency 50Hz of filter circuit, amplitude 220v alternating currents
Occur module 202, high-speed data acquisition card 200, host computer 204 for dash current and carry out continual and steady power supply, remain whole
System is normally run.
The power frequency supply module occurs module 202 by insulated conductor and dash current and is connected, and mould occurs for dash current
Block 202 can produce that 8/20us amplitude of lightning current is adjustable in 0-5000A is interval, and the amplitude of module 202 and triggering occur for dash current
Time is adjusted by the control end of host computer 204, and host computer 204 occurs module 202 with dash current and connected by signal cable 203
Connect；The current output terminal of dash current generating means 202 passes through insulating frame ceases to be busy 10 and grounded screen 13 of the material for crosslinked polyethylene
Connection, insulating frame ceases to be busy 10 and flat type copper wire 11 and copper rod electricity that the backflow end of dash current generating means 202 passes through crosslinked polyethylene
Pole 12 is connected；The specification of insulating frame ceases to be busy 10 of crosslinked polyethylene be JKGYJ, 1 core, current-carrying capacity 400A, the outside diameter of cable is 25.7mm,
Specification 185/30, operating temperature is -35--+80 degrees Celsius, strong with current capacity, the advantages of adaptable；Copper rod electricity
Pole 12 and the embedment of flat type copper wire 11 underground, flat type copper wire 11 are distributed around earthing pole 13, and earthing pole encloses border circular areas in flat type copper wire
Home position；Dash current generating means 202, the insulating frame ceases to be busy 10 of crosslinked polyethylene, grounded screen 13, the earth, copper rod ground connection
Pole 12 is connected with flat type copper wire 11 constitutes loop.
High-speed data acquisition card 200, which includes high-speed data acquiring device, includes resistor network, analog switch, operation amplifier electricity
Road, filter circuit and A/D analog to digital conversion circuits, electrical isolation module, embedded MCU, bus system and high-speed communication interface, on
Circuit input/output interface is stated to be sequentially connected；The bipolar plates voltage collecting device collection voltages signal is by there is electromagnetic shielding work(
The coaxial cable 205 of energy is connected with high-speed data acquiring device, will in order to meet the high precision collecting and filtering clutter of electric signal
Circuit is amplified filtering process to signal after filtering, and being converted into filtered analog signal by A/D change-over circuits can be with
The two ways of digital signals u of storage1(t)、u2(t)；The high-speed figure capture card is connected and passed with the host computer by USB interface
Transmission of data, by two ways of digital signals u1(t), be transferred in host computer memory；The host computer 204 includes server and software
LABVIEW, server is technical grade notebook computer, and integral body is wrapped up by metal shell, places electromagnetic shielding interference, improves
Server hardware stability；Above-mentioned two ways of digital signals u is carried out by the LABVIEW softwares in host computer 2041(t)、u2(t)Carry out from
Extraction, data program calculation and plot and display in server storage, coordinate and electricity are impacted in the bipolar plates voltage collecting device, ground
Bit distribution calculation formula isThis algorithm is by LABVIEW programming realizations；
Specifically, refer to Fig. 3, Fig. 3 is bipolar plates voltage collecting device in a kind of embodiment of the invention, including
BVR14mm2 specifications cable 01,5cm*5cm*0.2cm specifications copper coin 02, M3 copper gaskets 03, the threaded asphalt mixtures modified by epoxy resin of straight ends
Fat support 04, specification M3*8 11 letter disk head screws 05, specification M3*50 bilateral nylon column hexagonal internal threads insulated column 06；Four
Piece copper coin is divided into 2 groups, every group of two panels, needs to keep certain insulating voids between two copper sheets 02, is consolidated using insulating fixing piece
It is fixed；Two copper sheets 02 are dielectrically separated from by two parallel specification M3*50 bilateral nylon column hexagonal internal threads insulated columns 06, end by
M3*8 11 letter disk head screws 05 are screwed into insulated column 06, are allowed to be formed be parallel to each other one group at a distance of 50mm by stream plate, on
Pad is by M3 copper sheets below for end gauage lattice M3*8 11 letter disk head screws 05, and M3 copper sheets are connected with BVR14mm2 specifications cable 01；Another 2
Piece copper coin 02 makes one group by stream plate using same fixed form；2 groups threaded by orthogonal end by stream plate
Two long 8cm epoxy mounts 04 are connected, and form a firmly entirety；This bipolar plates voltage collecting device 0 is embedded to and wanted
In the ground of measurement position, angle is arbitrarily selected.
Claims (3)
1. voltage's distribiuting experimental system in a kind of lower ground of bipolar board test impact, it is characterised in that power frequency supply module (201) with
Module (202) electrical connection occurs for dash current；Dash current occurs module (202) and passes through copper rod group and grounded screen (13)
Constitute loop；Host computer (204) occurs module (202) and high-speed data acquisition mould card (205) signal with dash current and is connected；It is double
Polar plate voltage acquisition module (0) surveys voltage signal by high-speed data acquisition mould card (205) host computer (204) conveying, above-mentioned
All modules constitute a full experiment system；The copper rod group is by many copper rods by flat type copper wire (11) series connection structure
Into；
Bipolar plates voltage acquisition module (0) is made up of two prescription shape copper polar plates, and every group of pole plate is at right angles supported by insulating bar, every group
Copper coin by the square copper coin of two panels by insulating bar support phase to thirty years of age, be welded with insulated conductor above every copper coin；Bipolar plates electric current
Harvester is placed on below earth's surface, and plane where copper sheet is perpendicular to the ground, and placed angle is any；Grounded screen (13) is placed in flat type copper wire
(11) home position of border circular areas is enclosed.
2. voltage's distribiuting experimental system in the lower ground of bipolar board test impact according to claim 1, it is characterised in that described
Host computer is communicated with the high-speed data processing module by the signal cable, according to gathered data, obtains described double
The change of earth's surface voltage gradient and time relationship at polar plate voltage acquisition module placement location.
3. voltage's distribiuting experimental system in the lower ground of bipolar board test impact according to claim 1, it is characterised in that described
Power frequency supply is the portable uninterrupted 220v alternating voltages for providing frequency 50Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710394078.XA CN107192906A (en) | 2017-05-28 | 2017-05-28 | Voltage's distribiuting experimental system in a kind of lower ground of bipolar board test impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710394078.XA CN107192906A (en) | 2017-05-28 | 2017-05-28 | Voltage's distribiuting experimental system in a kind of lower ground of bipolar board test impact |
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| Publication Number | Publication Date |
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| CN107192906A true CN107192906A (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710394078.XA Pending CN107192906A (en) | 2017-05-28 | 2017-05-28 | Voltage's distribiuting experimental system in a kind of lower ground of bipolar board test impact |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872797A (en) * | 2018-08-22 | 2018-11-23 | 西南交通大学 | A kind of radial part dampness lesion mimic method of cable |
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| CN1865961A (en) * | 2006-06-15 | 2006-11-22 | 太原理工大学 | Multifunctional automatic testing instrument for soil strength and using method therefor |
| CN201449879U (en) * | 2009-03-13 | 2010-05-05 | 日新电机株式会社 | gas-insulated voltage transformer |
| CN102944771A (en) * | 2012-10-24 | 2013-02-27 | 中国电力科学研究院 | Simulation experiment device and method of alternating current, direct current and impact performance of large earth screen |
| CN105954573A (en) * | 2016-06-22 | 2016-09-21 | 重庆大学 | Method for measuring ground potential by use of multilayer sensor structure, and multilayer sensor structure |
| CN106154061A (en) * | 2015-04-24 | 2016-11-23 | 国家电网公司 | Electrical field test instrument |
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2017
- 2017-05-28 CN CN201710394078.XA patent/CN107192906A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865961A (en) * | 2006-06-15 | 2006-11-22 | 太原理工大学 | Multifunctional automatic testing instrument for soil strength and using method therefor |
| CN201449879U (en) * | 2009-03-13 | 2010-05-05 | 日新电机株式会社 | gas-insulated voltage transformer |
| CN102944771A (en) * | 2012-10-24 | 2013-02-27 | 中国电力科学研究院 | Simulation experiment device and method of alternating current, direct current and impact performance of large earth screen |
| CN106154061A (en) * | 2015-04-24 | 2016-11-23 | 国家电网公司 | Electrical field test instrument |
| CN105954573A (en) * | 2016-06-22 | 2016-09-21 | 重庆大学 | Method for measuring ground potential by use of multilayer sensor structure, and multilayer sensor structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872797A (en) * | 2018-08-22 | 2018-11-23 | 西南交通大学 | A kind of radial part dampness lesion mimic method of cable |
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Application publication date: 20170922 |
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