CN207181571U - The tower grounding shock response test of 35kV overhead power transmissions and apparatus for evaluating - Google Patents
The tower grounding shock response test of 35kV overhead power transmissions and apparatus for evaluating Download PDFInfo
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- CN207181571U CN207181571U CN201720278862.XU CN201720278862U CN207181571U CN 207181571 U CN207181571 U CN 207181571U CN 201720278862 U CN201720278862 U CN 201720278862U CN 207181571 U CN207181571 U CN 207181571U
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Abstract
It the utility model is related to a kind of 35kV overhead power transmissions tower grounding shock response test and apparatus for evaluating, including impulse current generator (2), transient voltage logger (3), computer (4), testing current pole (7) and voltage tester pole (8), described impulse current generator (2), transient voltage logger (3) is connected with the down conductor of electric power pylon with earthing or grounding means (9) respectively, described impulse current generator (2), transient voltage logger (3) is connected with computer (4) respectively, described impulse current generator (2) is connected with testing current pole (7), described transient voltage logger (3) is connected with voltage tester pole (8).Compared with prior art, the utility model has the advantages that simple, accurate and not limited by live service condition.
Description
Technical field
One kind is the utility model is related to, tests and comments more particularly, to a kind of 35kV overhead power transmissions tower grounding shock response
Estimate device.
Background technology
35kV overhead power transmission tower groundings are to ensure that shaft tower and its critical facility of affiliated electrical equipment safe operation, especially
It is under thunderbolt operating mode.Because earthing or grounding means is embedded in underground, the often corrosion because of soil for many years, grounding body is caused to attenuate or even break
Split, it is also possible to stolen to dig.At present, the detection in engineering to 35kV overhead power transmission tower groundings performance quality typically passes through power frequency
Grounding resistance judges indirectly, but can not understand the characteristic showed under lightning impulse operating mode i.e. transient state short circuit.This causes
Operation maintenance personnel meets standard requirement after carrying out power frequency earthing resistance detection, and 35kV overhead power transmissions shaft tower can equally occur under thunder and lightning
Frequent trip even reclosing is unsuccessful, attached insulation of electrical installation, arrester etc. on shaft tower is broken, so as to power
Interrupting influences power network power supply reliability.Because the impedance ground value that currently used power frequency earthing resistance is tested to obtain is
50Hz or close to the power-frequency earthing impedance value under 50Hz, but actually short circuit grounding failure occurs for 35kV overhead power transmissions shaft tower, or
Under person's Lightning Incoming Wave or operation ripple effect, the transient state impulse grounding characteristic of earthing or grounding means plays a decisive role.Therefore only measure
Power-frequency earthing impedance can not represent 35kV overhead power transmission tower groundings device completely can be with safe operation under fault condition.
Utility model content
The purpose of this utility model is exactly to provide a kind of 35kV the defects of overcoming above-mentioned prior art to exist and make somebody a mere figurehead
Transmission tower is grounded shock response test and apparatus for evaluating.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of 35kV overhead power transmissions tower grounding shock response test and apparatus for evaluating, including impulse current generator, temporarily
State voltage recorder, computer, testing current pole and voltage tester pole, described impulse current generator, transient voltage record
Device is connected with the down conductor of electric power pylon with earthing or grounding means respectively, described impulse current generator, transient voltage record
Device is connected with computer respectively, and described impulse current generator is connected with testing current pole, described transient voltage logger
It is connected with voltage tester pole.
Described impulse current generator is binary channels impulse current generator, respectively by under two wires and grounding lead
Line is connected with earthing or grounding means.
Described transient voltage logger is binary channels transient response voltage waveform logger, respectively by two wires with
Down conductor is connected with earthing or grounding means.
Described computer is connected by USB data line with impulse current generator, transient voltage logger respectively.
Described computer includes display, memory and analysis and setting unit.
Compared with prior art, the utility model can not have a power failure and not to tower grounding device excavate in the case of,
The running status of 35kV overhead power transmission tower groundings is solved, judges whether 35kV overhead power transmissions tower grounding occurs burn into fracture very
To the stolen safe and reliable operation dug, ensure shaft tower and corresponding device.And have simply, accurately and not by live service condition
Limitation the advantages that.
Brief description of the drawings
Fig. 1 is on-the-spot test wiring diagram of the present utility model, wherein 1 being 35KV electric power pylons, 2 being dash current
Device, 3 be transient voltage logger, 4 be computer, 5 be wire, 6 be USB data line, 7 be testing current pole, 8 be voltage tester
Pole, 9 are down conductor and earthing or grounding means.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that described embodiment is part of the embodiment of the present utility model, rather than is all implemented
Example.Based on the embodiment in the utility model, those of ordinary skill in the art institute on the premise of creative work is not made
The every other embodiment obtained, it should all belong to the scope of the utility model protection.
As shown in figure 1, a kind of 35kV overhead power transmissions tower grounding shock response test and apparatus for evaluating, including dash current
Generator 2, transient voltage logger 3, computer 4, testing current pole 7 and voltage tester pole 8, described impulse current generator
2nd, transient voltage logger 3 is connected with the down conductor of electric power pylon with earthing or grounding means 9 respectively, and described dash current occurs
Device 2, transient voltage logger 3 are connected with computer 4 respectively, and described impulse current generator 2 is connected with testing current pole 7,
Described transient voltage logger 3 is connected with voltage tester pole 8.
Described impulse current generator 2 is binary channels impulse current generator, passes through two wires 5 and grounding lead respectively
It is offline to be connected with earthing or grounding means 9.
Described transient voltage logger 3 is binary channels transient response voltage waveform logger, passes through two wires 5 respectively
It is connected with down conductor with earthing or grounding means 9.
Described computer 4 is connected by USB data line 6 with impulse current generator 2, transient voltage logger 3 respectively.
Described computer 4 includes display, memory and analysis and setting unit.
Selected tested 35kV overhead power transmission tower groundings, record shaft tower number, staff's tape insulation gloves untie its 2
The metal of down conductor and shaft tower connects.The earthing or grounding means (down conductor) and impulse current generator 2 and transient voltage
Logger 3 is attached, and places testing current line and voltage tester line.By computer (generally industrial computer) to impact electricity
The test record of flow-generator and transient voltage wave tracer is calculated and analyzed, and is drawn shock response curve, is somebody's turn to do
2 shock response curves of 35kV overhead power transmission tower groundings；Can be according to the phase of present percussion response curve and history curve
Close the running status that coefficient magnitude assesses the 35kV overhead power transmission tower groundings.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in various in the technical scope that the utility model discloses
Equivalent modifications or substitutions, these modifications or substitutions should all cover within the scope of protection of the utility model.Therefore, this practicality
New protection domain should be defined by scope of the claims.
Claims (2)
1. a kind of 35kV overhead power transmissions tower grounding shock response test and apparatus for evaluating, it is characterised in that including dash current
Generator (2), transient voltage logger (3), computer (4), testing current pole (7) and voltage tester pole (8), described impact
Current feedback circuit (2), transient voltage logger (3) are connected with the down conductor of electric power pylon with earthing or grounding means (9) respectively, institute
Impulse current generator (2), the transient voltage logger (3) stated are connected with computer (4) respectively, and described dash current occurs
Device (2) is connected with testing current pole (7), and described transient voltage logger (3) is connected with voltage tester pole (8)；
Described impulse current generator (2) is binary channels impulse current generator, passes through two wires (5) and grounding lead respectively
It is offline to be connected with earthing or grounding means (9)；Described transient voltage logger (3) is binary channels transient response voltage waveform logger,
It is connected respectively by two wires (5) with down conductor with earthing or grounding means (9)；Described computer (4) passes through USB numbers respectively
It is connected according to line (6) with impulse current generator (2), transient voltage logger (3).
2. a kind of 35kV overhead power transmissions tower grounding shock response test according to claim 1 and apparatus for evaluating, it is special
Sign is that described computer (4) includes display, memory and analysis and setting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720278862.XU CN207181571U (en) | 2017-03-21 | 2017-03-21 | The tower grounding shock response test of 35kV overhead power transmissions and apparatus for evaluating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720278862.XU CN207181571U (en) | 2017-03-21 | 2017-03-21 | The tower grounding shock response test of 35kV overhead power transmissions and apparatus for evaluating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207181571U true CN207181571U (en) | 2018-04-03 |
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ID=61732409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720278862.XU Active CN207181571U (en) | 2017-03-21 | 2017-03-21 | The tower grounding shock response test of 35kV overhead power transmissions and apparatus for evaluating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207181571U (en) |
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2017
- 2017-03-21 CN CN201720278862.XU patent/CN207181571U/en active Active
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