CN208125821U - A kind of reverse short distance measurement device of ground resistance - Google Patents
A kind of reverse short distance measurement device of ground resistance Download PDFInfo
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- CN208125821U CN208125821U CN201820674641.9U CN201820674641U CN208125821U CN 208125821 U CN208125821 U CN 208125821U CN 201820674641 U CN201820674641 U CN 201820674641U CN 208125821 U CN208125821 U CN 208125821U
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- test box
- ground resistance
- short distance
- distance measurement
- resistance
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Abstract
The utility model discloses a kind of reverse short distance measurement devices of ground resistance,Including earth resistance device noumenon,Test box is equipped in earth resistance device noumenon,Test box hardware installation bottom plate,Control panel,Display,Power supply indicator,Power outlet,Quick charge indicator light,Power switch,Measure key,Reset key,Constant-current source output terminals A,P1 voltage signal inputs,P2 voltage signal inputs,Constant current source output terminal B,Printer,Voltage control knob,Alarm lamp,Electron plate,Test box backboard is equipped at the back side of earth resistance device noumenon,Earth resistance device noumenon is attached by conducting wire and ground resistance,The measurement lead of use is short,And spacing is big between test resistance,Mutual inductance influence is not will cause,It is high to the measurement accuracy of ground resistance,Have the advantages that measurement is convenient and quick.
Description
Technical field
The utility model relates to earth resistance technical field, specially a kind of reverse short distance measurement dress of ground resistance
It sets.
Background technique
With the construction of extra-high voltage grade transmission system and the expansion of power grid scale, the quantity of ultra-large load-center substation
More and more, the size of grounded screen also far surpasses the level before 10 years.Load-center substation is played in power grid by UHV transmission
The important function of society's power supply is sent out and ensured to system capacity, and the reliable of grounded screen performance has guarantee China's electric power safety
Significance.
Ground resistance is the important indicator for assessing grounded screen performance.It is important that ground resistance measurement work is that power train unifies item
And long-term measurement test.Purpose is the design objective to power plant, grounding resistance of transformer substation grounding net, engineering construction, fortune
Row situation is carried out an acceptance inspection and is assessed, to ensure the safe and reliable ground connection of electric system.Power industry standard DL/T475-2006《It connects
Ground equipment energy characteristic parameter measurement directive/guide》In especially highlight the earth resistance requirement of transformer station grounding network, and give
Specific test device parameter recommendation.The existing ground resistance measurement method in China is mainly long line method, needs cloth in measurement
Set 4~5 times of measurement of length leads of grounded screen equivalent diameter.Substantially due to ultra-large type substation, station grounding network planning mould
Expand, the measurement difficulty and workload of existing measurement method also significantly improve.In addition, it is contemplated that power grid need to detect every year it is big
Type grounded screen is large number of, and workload is huge, and traditional measurement method has been difficult to adapt to current operation and maintenance demand.Therefore, electric
Force system is badly in need of developing new ground resistance measurement method and measuring device.
Utility model content
The purpose of this utility model is to provide a kind of measurement lead is short, and spacing is big between test resistance, Bu Huizao
It is influenced at mutual inductance, a kind of ground resistance reverse short distance measurement device high to the measurement accuracy of ground resistance, to solve above-mentioned back
The problem of being proposed in scape technology.
To achieve the above object, the utility model provides the following technical solutions a kind of reverse short distance measurement dress of ground resistance
It sets, including earth resistance device noumenon, the earth resistance device noumenon is equipped with test box, the test box
Bottom is equipped with test box hardware installation bottom plate, and the front of the earth resistance device noumenon is equipped with control panel, described to connect
The back side of ground resistance test device ontology is equipped with test box backboard.
Preferably, the part of the upper surface protrusion of the test box hardware installation bottom plate is equipped with electron plate, the electron plate
Centre be equipped with central processing unit, the left side connecting pin of the central processing unit be equipped with A D converter, filter, signal amplification
Device, the top connecting pin of central processing unit are equipped with liquid crystal display, reseting module, and the right side connecting pin of central processing unit, which is equipped with, to be stored
Battery, DC module, the lower section connecting pin of the central processing unit are equipped with isolation output port, the test box hardware installation bottom plate
Surrounding at foot be equipped with fixed screw holes.
Preferably, the control panel is equipped with display, and the lower section of the display is equipped with display, power supply instruction
Lamp, power outlet, quick charge indicator light, power switch, the right side of the control panel are equipped with measurement key, reset key, constant current
Source output terminal A, P1 voltage signal inputs, P2 voltage signal inputs, constant current source output terminal B, printer, voltage control rotation
Button, alarm lamp.
Preferably, the left side of the test box backboard is equipped with heat release hole, is equipped with fan, protective net, the survey at heat release hole
The right side for trying case backboard is equipped with out-put supply selection switch, ground terminal, input power fuse holder, input power socket, distant
Control output terminal, parameter setup key.
Preferably, the constant-current source output terminals A connects electric current pole using conducting wire, and P1 voltage signal inputs connect voltage
Pole, the connection contact connection of the P2 voltage signal inputs, constant current source output terminal B and ground resistance.
Preferably, the range of the measurement of the earth resistance device noumenon is 0-2K Ω, resistance resolution ratio is 0.001
Ω, constant current 10mA, test frequency 128Hz.
Compared with prior art, the utility model has the beneficial effects that：
Earth resistance device noumenon is attached by conducting wire and ground resistance, and the measurement lead of use is short, and
Spacing is big between test resistance, not will cause mutual inductance influence, high to the measurement accuracy of ground resistance, has measurement fast and convenient
Advantage.
Detailed description of the invention
Fig. 1 is the utility model earth resistance device noumenon structural schematic diagram；
Fig. 2 is the utility model earth resistance device hardware internal hardware structure chart；
Fig. 3 is the utility model test box backboard schematic diagram.
In figure：1, earth resistance device noumenon；2, test box；3, test box hardware installation bottom plate；4, control panel；
5, display；6, power supply indicator；7, power outlet；8, quick charge indicator light；9, power switch；10, key is measured；11, multiple
Position key；12, constant-current source output terminals A；13, P1 voltage signal inputs；14, P2 voltage signal inputs；15, constant current source output terminal
B；16, printer；17, voltage control knob；18, alarm lamp；19, electron plate；20, central processing unit；21, A D conversion
Device；22, filter；23, signal amplifier；24, liquid crystal display；25, reseting module；26, battery；27, DC module；28,
Output port is isolated；29, test box backboard；30, out-put supply selection switch；31, ground terminal；32, input power fuse
Seat；33, input power socket；34, it is remotely controlled output terminal；35, parameter setup key.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 is please referred to, the utility model provides a kind of technical solution：A kind of reverse short distance measurement device of ground resistance, packet
Earth resistance device noumenon 1 is included, the range of the measurement of earth resistance device noumenon 1 is 0-2K Ω, resistance resolution ratio
For 0.001 Ω, constant current 10mA, test frequency 128Hz.
Referring to Fig. 2, earth resistance device noumenon 1 is equipped with test box 2, the bottom of test box 2 is equipped with test box
Hardware installation bottom plate 3, the part of the upper surface protrusion of test box hardware installation bottom plate 3 are equipped with electron plate 19, in electron plate 19
Between be equipped with central processing unit 20, the left side connecting pin of central processing unit 20 be equipped with A D converter 21, filter 22, signal amplification
Device 23, A D converter 21 connect with voltage control knob 17, the top connecting pin of central processing unit 20 be equipped with liquid crystal display
24, reseting module 25, liquid crystal display are connect with display, through the data of the ground resistance of display display measurement, in
The right side connecting pin of central processor 20 be equipped with battery 26, DC module 27, battery 26 be circuit system in all hardware into
Row power supply is equipped with isolation output port 28, the surrounding of test box hardware installation bottom plate 3 in the lower section connecting pin of central processing unit 20
Fixed screw holes are equipped at foot.
The front of earth resistance device noumenon 1 is equipped with control panel 4, and control panel 4 is equipped with display 5, display
The lower section of device 5 is equipped with power supply indicator 6, power outlet 7, quick charge indicator light 8, power switch 9, and power outlet 7 uses
AC220V voltage input is equipped with measurement key 10, reset key 11, constant-current source output terminals A 12, P1 voltage on the right side of control panel 4
Signal input part 13, P2 voltage signal inputs 14, constant current source output terminal B15, printer 16, voltage control knob 17, alarm
Indicator light 18, constant-current source output terminals A 12 connect electric current pole using conducting wire, and P1 voltage signal inputs 13 connect voltage pole, P2 electricity
The connection contact of signal input part 14, constant current source output terminal B15 and ground resistance is pressed to connect.
Referring to Fig. 3, the back side of earth resistance device noumenon 1 is equipped with test box backboard 29, test box backboard 29
Left side is equipped with heat release hole, and fan, protective net are equipped at heat release hole, and the right side of test box backboard 29 is equipped with out-put supply selection switch
30, ground terminal 31, input power fuse holder 32, input power socket 33, remote control output terminal 34, parameter setup key 35.
Earth resistance device noumenon 1 is attached by conducting wire and ground resistance, and the measurement lead of use is short, and
Spacing is big between test resistance, not will cause mutual inductance influence, high to the measurement accuracy of ground resistance, has measurement fast and convenient
Advantage.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of reverse short distance measurement device of ground resistance, including earth resistance device noumenon (1), it is characterised in that：Institute
Earth resistance device noumenon (1) is stated equipped with test box (2), the bottom of the test box (2) is pacified equipped with test box hardware
It fills bottom plate (3), the front of the earth resistance device noumenon (1) is equipped with control panel (4), the earth resistance dress
The back side for setting ontology (1) is equipped with test box backboard (29).
2. the reverse short distance measurement device of a kind of ground resistance according to claim 1, it is characterised in that：The test box is hard
The part of the upper surface protrusion of part mounting base (3) is equipped with electron plate (19), and the centre of the electron plate (19) is equipped with centre
Manage device (20), the left side connecting pin of the central processing unit (20) be equipped with A D converter (21), filter (22), signal amplification
The top connecting pin of device (23), central processing unit (20) is equipped with liquid crystal display (24), reseting module (25), central processing unit
(20) right side connecting pin is equipped with battery (26), DC module (27), and the lower section connecting pin of the central processing unit (20) is equipped with
It is isolated output port (28), the surrounding of the test box hardware installation bottom plate (3) is equipped with fixed screw holes at foot.
3. the reverse short distance measurement device of a kind of ground resistance according to claim 1, it is characterised in that：The control panel
(4) display (5) are equipped with, the lower section of the display (5) is equipped with power supply indicator (6), power outlet (7), quick charge
The right side of indicator light (8), power switch (9), the control panel (4) is defeated equipped with measurement key (10), reset key (11), constant-current source
Outlet A (12), P1 voltage signal inputs (13), P2 voltage signal inputs (14), constant current source output terminal B (15), printer
(16), voltage control knob (17), alarm lamp (18).
4. the reverse short distance measurement device of a kind of ground resistance according to claim 1, it is characterised in that：The test box back
The left side of plate (29) is equipped with heat release hole, and fan, protective net are equipped at heat release hole, and the right side of the test box backboard (29) is equipped with defeated
Power selection switch (30), ground terminal (31), input power fuse holder (32), input power socket (33), remote control are defeated out
Terminal (34), parameter setup key (35) out.
5. the reverse short distance measurement device of a kind of ground resistance according to claim 3, it is characterised in that：The constant-current source is defeated
Outlet A (12) connects electric current pole using conducting wire, and P1 voltage signal inputs (13) connect voltage pole, the P2 voltage signal input
End (14), constant current source output terminal B (15) are connect with the connection contact of ground resistance.
6. the reverse short distance measurement device of a kind of ground resistance according to claim 1, it is characterised in that：The ground resistance
The range of the measurement of test device ontology (1) is 0-2K Ω, resistance resolution ratio is 0.001 Ω, constant current 10mA, test frequency
Rate is 128Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820674641.9U CN208125821U (en) | 2018-05-08 | 2018-05-08 | A kind of reverse short distance measurement device of ground resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820674641.9U CN208125821U (en) | 2018-05-08 | 2018-05-08 | A kind of reverse short distance measurement device of ground resistance |
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| Publication Number | Publication Date |
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| CN208125821U true CN208125821U (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820674641.9U Active CN208125821U (en) | 2018-05-08 | 2018-05-08 | A kind of reverse short distance measurement device of ground resistance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884396A (en) * | 2019-04-28 | 2019-06-14 | 赣南医学院 | A kind of quick detection device of circuit board branch resistance |
-
2018
- 2018-05-08 CN CN201820674641.9U patent/CN208125821U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884396A (en) * | 2019-04-28 | 2019-06-14 | 赣南医学院 | A kind of quick detection device of circuit board branch resistance |
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