CN104502726B - The measuring method of steel tower and cement pole power frequency earthing resistance - Google Patents
The measuring method of steel tower and cement pole power frequency earthing resistance Download PDFInfo
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- CN104502726B CN104502726B CN201410720659.4A CN201410720659A CN104502726B CN 104502726 B CN104502726 B CN 104502726B CN 201410720659 A CN201410720659 A CN 201410720659A CN 104502726 B CN104502726 B CN 104502726B
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 239000004568 cement Substances 0.000 title claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 210000000080 chela (arthropods) Anatomy 0.000 claims abstract description 13
- 230000000717 retained effect Effects 0.000 claims abstract description 13
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000007717 exclusion Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
A kind of degree of accuracy for greatly improving testing efficiency and test, finds imperfect earth in time, improves the measuring method of the horizontal steel tower of the resistance to thunder of equipment and cement pole power frequency earthing resistance.Its step is as follows：(a) steel tower and cement pole earthing pole inspection；(b) in the case of earthing pole is not tampered using grounding resistance of the pincers meter method for measuring per piece-root grafting earth polar, if it find that there is earthing pole grounding resistance to be less than l ohms during measurement, then execution step (c)；In measurement if it find that with other earthing poles of surrounding and the conventional numeric ratio of this earthing pole compared with there is earthing pole grounding resistance to significantly increase or exceeded in corresponding standard or code to the regulation of grounding resistance, then perform step (d) and step (e), check for that earthing pole is unqualified or steel tower above lightning conducter loose contact situations such as；(c) grounding resistance that pincers meter method for measuring steel tower is overall is used in the case of a piece-root grafting ground wire is retained；(d) the overall grounding resistance of three electrode method measurement tower；（e）Grounding resistance of the three electrode method measurement steel tower per piece-root grafting earth polar.
Description
Technical field
The present invention relates to the measuring method of a kind of steel tower and cement pole power frequency earthing resistance.
Background technology
Tower grounding test conventional method be earthing megohm meter method of testing, workload is big, efficiency is low, test result by
Live influence factor is more.For a fairly large number of area of shaft tower, it is difficult to complete using three electrode method test, during actual motion is safeguarded
It is difficult to ensure that the accuracy and promptness of test.Pincerlike meter tests test method is simple, but due to the incorrect of method and to making
With condition grasp it is indefinite, do not popularized always in power department.
The content of the invention
The technical problem to be solved in the present invention is to provide the degree of accuracy for greatly improving testing efficiency and test, finds to connect in time
Ground is bad, improves the measuring method of the horizontal steel tower of the resistance to thunder of equipment and cement pole power frequency earthing resistance.
The present invention technical solution be：
The measuring method of steel tower and cement pole power frequency earthing resistance, its step are as follows：
(a) steel tower and cement pole earthing pole inspection
First check for test line steel tower and whether cement pole meets earthing or grounding means characterisitic parameter measurement directive/guide DL/T475-
2006, record lightning conducter model, shaft tower height, earthing pole pattern, shaft tower numbering, earthing pole numbering, soil regime and work as ground vapour
Temperature, the electrical connection situation of tested tower grounding line is checked, if finding there are the abnormal conditions such as ground wire destroys or bolt is stolen
Perform record and timely processing；
(b) grounding resistance of the pincers meter method for measuring per piece-root grafting earth polar is used in the case of earthing pole is not tampered
Earthing pole is not tampered, respectively using grounding resistance of the pincerlike earth resistance tester measurement per piece-root grafting earth polar；Measurement
When open pincerlike earth resistance tester jaw, vise each ground wire using tester by root, make ground wire placed in the middle, as far as possible hang down
The directly plane where tester jaw, and keep jaw contacts good, tester is worked, read and record stable reading；
If it find that there is earthing pole grounding resistance to be less than l ohms during measurement, then there may be between each earthing pole in ground or
The situation that metal connects in basis, step (c) is now performed, pincers meter method for measuring is used using whole shaft tower as overall；
If it find that relatively having earthing pole grounding resistance with other earthing poles of surrounding and the conventional numeric ratio of this earthing pole in measurement
Significantly increase, or exceeded in corresponding standard or code to the regulation of grounding resistance, then check that this earthing pole connects spiral shell
Whether bolt loosens or loose contact, if remeasuring still increase or exceeded after exclusion, step (d) is performed using three electrode method
With step (e), it is unqualified to check for earthing pole, or above steel tower situations such as lightning conducter loose contact, to judge that its is former
Cause and corresponding rectification；
(c) grounding resistance that pincers meter method for measuring steel tower is overall is used in the case of a piece-root grafting ground wire is retained
Only retain a piece-root grafting ground wire with shaft tower tower body to be connected, remaining ground wire all should disconnect with shaft tower tower body and can not be with bar
Tower tower body metal contacts, and other ground wires that will be switched off with the wire for having insulation rubber and retained ground connection line parallel, and
Contact is good, is measured using tower grounding device as overall；Pincerlike earth resistance tester jaw is opened during measurement, uses test
Instrument vises that retained piece-root grafting ground wire, and pincerlike earth resistance tester should be located at the top of all parallel connections, make to be retained
Ground wire it is placed in the middle, the plane as far as possible where the tester jaw, and keep jaw contacts good makes tester work,
Read and record stable reading；
(d) the overall grounding resistance of three electrode method measurement tower
By all ground wires with being disconnected with shaft tower tower body, but can not be contacted with shaft tower tower body metal, and with there is insulating cement
All ground connection line parallels that the wire of skin will be switched off, measured using three electrode method using tower grounding device as overall；
（e）Grounding resistance of the three electrode method measurement steel tower per piece-root grafting earth polar
Remove the parallel connections between ground wire, measure grounding resistance of the steel tower per piece-root grafting earth polar respectively using three electrode method.
The beneficial effects of the invention are as follows：First by the grounding resistance of pincerlike method measurement earthing pole, when the ground connection of earthing pole
During resistance exception again using three electrode method measure, two methods are organically combined, greatly improve testing efficiency and test it is accurate
Degree, to find imperfect earth in time, improve the resistance to thunder of equipment horizontal steel tower and cement pole power frequency earthing resistance.
Brief description of the drawings
Fig. 1 is the schematic diagram for not tampering power frequency earthing resistance of the earthing pole pincers meter method for measuring per piece-root grafting earth polar；
Fig. 2 is the schematic diagram for the power frequency earthing resistance for retaining piece-root grafting earth polar pincers meter method for measuring steel tower and cement pole entirety；
Fig. 3 is the schematic diagram of three electrode method measurement steel tower and the power frequency earthing resistance of cement pole entirety；
Fig. 4 is the schematic diagram of the power frequency earthing resistance of three electrode method measurement steel tower and cement pole per piece-root grafting earth polar；
In figure：P- voltage poles, C- electric currents pole.
Embodiment
As illustrated, the measuring method of steel tower and cement pole power frequency earthing resistance, its step is as follows：
(a) steel tower and cement pole earthing pole inspection
First check for test line steel tower and whether cement pole meets earthing or grounding means characterisitic parameter measurement directive/guide DL/T475-
2006, record lightning conducter model, shaft tower height, earthing pole pattern, shaft tower numbering, earthing pole numbering, soil regime and work as ground vapour
Temperature, the electrical connection situation for being tested tower grounding line is checked, such as find there is ground wire destruction or bolt to be stolen abnormal conditions and answer
Perform record and timely processing；
(b) grounding resistance of the pincers meter method for measuring per piece-root grafting earth polar is used in the case of earthing pole is not tampered
Earthing pole is not tampered, respectively using ground connection electricity of the pincerlike earth resistance tester measurement per piece-root grafting earth polar A, B, C, D
Resistance, as shown in Figure 1；Pincerlike earth resistance tester jaw is opened during measurement, each ground wire is vised using tester by root, makes to connect
Ground wire is placed in the middle, as far as possible perpendicular to plane where tester jaw, and keeps jaw contacts good, tester is worked, and reads
And record stable reading；
If it find that there is earthing pole grounding resistance to be less than l ohms during measurement, then there may be between each earthing pole in ground or
The situation that metal connects in basis, step (c) is now performed, pincers meter method for measuring is used using whole shaft tower as overall；
If it find that relatively having earthing pole grounding resistance with other earthing poles of surrounding and the conventional numeric ratio of this earthing pole in measurement
Significantly increase, or exceeded in corresponding standard or code to the regulation of grounding resistance, then check that this earthing pole connects spiral shell
Whether bolt loosens or loose contact, if remeasuring still increase or exceeded after exclusion, performs step (d) and step (e),
It is unqualified to check for earthing pole, or above steel tower situations such as lightning conducter loose contact, to judge its reason and correspond to whole
Change.
(c) grounding resistance that pincers meter method for measuring steel tower is overall is used in the case of a piece-root grafting ground wire is retained
Only retain a piece-root grafting ground wire A with shaft tower tower body to be connected, remaining is grounded B, C, D and tower body disconnection and can not be with shaft tower
Tower body metal contacts, and ground wire B, C, the D that will be switched off with the wire for having insulation rubber is in parallel with retained ground wire A, and
Contact is good, is measured using tower grounding device as overall, such as Fig. 2；Pincerlike earth resistance tester jaw is opened during measurement, is made
That retained piece-root grafting ground wire is vised with tester, pincerlike earth resistance tester should be located at the top of all parallel connections, make
Retained ground wire is placed in the middle, as far as possible perpendicular to plane where tester jaw, and keeps jaw contacts good, makes tester
Work, read and record stable reading；
(d) the overall grounding resistance of three electrode method measurement tower
All ground wire A, B, C, D and shaft tower tower body are disconnected, but can not be contacted with shaft tower tower body metal, and it is exhausted with having
All ground connection line parallels that the wire of edge rubber will be switched off, using three electrode method earth resistance tester using tower grounding device as
Overall measurement, such as Fig. 3；
（e）Grounding resistance of the three electrode method measurement steel tower per piece-root grafting earth polar
Remove the parallel connections between ground wire, every, steel tower is measured by earth resistance tester respectively using three electrode method
The grounding resistance of earthing pole, such as Fig. 4.
Claims (1)
1. the measuring method of steel tower and cement pole power frequency earthing resistance, it is characterized in that step is as follows：
(a) steel tower and cement pole earthing pole inspection
First check for test line steel tower and whether cement pole meets earthing or grounding means characterisitic parameter measurement directive/guide DL/T 475-
2006, record lightning conducter model, shaft tower height, earthing pole pattern, shaft tower numbering, earthing pole numbering, soil regime and work as ground vapour
Temperature, the electrical connection situation of tested tower grounding line is checked, if finding there are the abnormal conditions that ground wire destroys or bolt is stolen
Perform record and timely processing；
(b) earthing pole is not tampered using grounding resistance of the pincers meter method for measuring per piece-root grafting earth polar in the case of earthing pole is not tampered, point
Shi Yong not grounding resistance of the pincerlike earth resistance tester measurement per piece-root grafting earth polar；Pincerlike earth resistance tester is opened during measurement
Jaw, each ground wire is vised using tester by root, makes ground wire placed in the middle, the plane as far as possible where the tester jaw,
And keep jaw contacts good, tester is worked, read and record stable reading；
If it find that there is earthing pole grounding resistance to be less than l ohms during measurement, then there may be between each earthing pole in ground or basic
The situation of middle metal connection, now performs step (c), and pincers meter method for measuring is used using whole shaft tower as overall；
It is in measurement if it find that obvious compared with there is earthing pole grounding resistance with other earthing poles of surrounding and the conventional numeric ratio of this earthing pole
Increase, or exceeded in corresponding standard or code to the regulation of grounding resistance, then check that this earthing pole connecting bolt is
No loosening or loose contact, if remeasuring still increase or exceeded after exclusion, step (d) and step (e) are performed, is checked
It is unqualified with the presence or absence of earthing pole, or the situation of steel tower top lightning conducter loose contact, to judge its reason and corresponding rectification；
(c) grounding resistance that pincers meter method for measuring steel tower and cement pole are overall is used in the case of a piece-root grafting ground wire is retained
Only retain a piece-root grafting ground wire with shaft tower tower body to be connected, remaining ground wire all should disconnect with shaft tower tower body and can not be with shaft tower tower
Body metal contacts, and other ground wires that will be switched off with the wire for having insulation rubber and retained ground connection line parallel, and contacts
Well, measured using tower grounding device as overall；Pincerlike earth resistance tester jaw is opened during measurement, is clamped using tester
Firmly that retained piece-root grafting ground wire, pincerlike earth resistance tester should be located at the top of all parallel connections, make retained connect
Ground wire is placed in the middle, as far as possible perpendicular to plane where tester jaw, and keeps jaw contacts good, tester is worked, and reads
And record stable reading；
(d) three electrode method measurement steel tower and the grounding resistance of cement pole entirety
By all ground wires with being disconnected with shaft tower tower body, but can not be contacted with shaft tower tower body metal, and with there is the rubber that insulate
All ground connection line parallels that wire will be switched off, measured using three electrode method using tower grounding device as overall；
(e) grounding resistance of the three electrode method measurement steel tower per piece-root grafting earth polar removes the parallel connections between ground wire, uses three electrode method
Grounding resistance of the steel tower per piece-root grafting earth polar is measured respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720659.4A CN104502726B (en) | 2014-12-01 | 2014-12-01 | The measuring method of steel tower and cement pole power frequency earthing resistance |
Applications Claiming Priority (1)
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| CN201410720659.4A CN104502726B (en) | 2014-12-01 | 2014-12-01 | The measuring method of steel tower and cement pole power frequency earthing resistance |
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| CN104502726A CN104502726A (en) | 2015-04-08 |
| CN104502726B true CN104502726B (en) | 2017-12-15 |
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| CN107490725A (en) * | 2017-08-04 | 2017-12-19 | 上海建科检验有限公司 | The pole method of testing of special industry place grounding resistance three |
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| CN1158425A (en) * | 1996-11-26 | 1997-09-03 | 山西省忻州地区电业局 | Release-free electric cable tower ground resistance testing method and device |
| JP4028167B2 (en) * | 2000-10-25 | 2007-12-26 | 東日本電信電話株式会社 | Method and apparatus for measuring ground resistance |
| KR100734821B1 (en) * | 2005-10-31 | 2007-07-03 | 한국전력공사 | Measurement Method of Grounding Resistance of Transmission Towers in an Energized Transmission Line System |
| CN100397087C (en) * | 2006-02-21 | 2008-06-25 | 武汉高压研究所 | Pole tower earthing resistance quick testing method without unfastening wire and device |
| CN101216515B (en) * | 2007-12-27 | 2010-04-21 | 武汉华瑞防雷科技股份有限公司 | Powerline pole tower ground resistance measurement method and its tester |
| EP2189799A1 (en) * | 2008-11-21 | 2010-05-26 | Korea Electric Power Corporation | Apparatus and method for three-pole type measuring of specific soil resistance for distribution grounding |
| CN201583596U (en) * | 2009-12-07 | 2010-09-15 | 江苏省电力公司盱眙县供电公司 | Device for testing ground resistance of transmission line tower |
| CN102680798B (en) * | 2012-02-28 | 2015-07-22 | 山东建筑大学 | Online measurement method and device for grounding resistor of rod tower |
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Inventor after: Wang Aihua Inventor after: Cui Jisheng Inventor after: Chen Chuan Inventor after: Li Yan Inventor after: Tang Zhi Inventor before: Tang Zhi |
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