CN107505490A - It is a kind of to run the method that current transformer is installed at arrester ground downlead - Google Patents
It is a kind of to run the method that current transformer is installed at arrester ground downlead Download PDFInfo
- Publication number
- CN107505490A CN107505490A CN201710807229.XA CN201710807229A CN107505490A CN 107505490 A CN107505490 A CN 107505490A CN 201710807229 A CN201710807229 A CN 201710807229A CN 107505490 A CN107505490 A CN 107505490A
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- CN
- China
- Prior art keywords
- arrester
- current transformer
- ground downlead
- arrester ground
- downlead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Thermistors And Varistors (AREA)
Abstract
The present invention relates to measurement and the operating method field of diagnostic techniques, more specifically, it is related to a kind of method run and current transformer is installed at arrester ground downlead, include validating that arrester information, the branch road of a powered flow table in parallel on arrester ground downlead, disconnect arrester ground downlead, current transformer is embedded on the down conductor of disconnection, down conductor is recovered and fixes current transformer, parallel branch is removed, this method efficiently solves the problem got an electric shock when installing current transformer on running arrester ground downlead, it is and easy to operate, securely and reliably, effect is good, the power failure of arrester can be avoided, improve power supply reliability.
Description
Technical field
The present invention relates to measurement and the operating method field of diagnostic techniques, is connect more particularly, to one kind operation arrester
The method that current transformer is installed at ground downlead.
Background technology
Arrester is to protect a kind of important protection equipment that electrical equipment is encroached on from overvoltage in power system.Arrester
Because it is widely used with excellent nonlinear characteristic and in overvoltage with good current capacity in transformer station,
It is and large number of.With arrester operation the time growth, arrester failure itself and cause what is be damaged by protection equipment
Event happens occasionally, especially voltage class in 110kV and the arrester of the above, once occur accident will be caused to user it is huge
Big economic loss and serious harmful effect is brought to power supply enterprise, thus the detection to arrester running status have it is important
Meaning.
Under working voltage, detect arrester leakage current and its resistive component to judge arrester running situation have
Play an important role, and it is to install current transformer on arrester ground downlead to detect leakage current most efficient method.By
Arrester under working voltage is powered, and down conductor can not arbitrarily disconnect, if disconnecting, then under arrester ground draws
High potential at line be present, installation current transformer personnel will be caused to get an electric shock and injured.
The content of the invention
The present invention is to overcome at least one defect described in above-mentioned prior art, there is provided under one kind operation arrester ground draws
The method that current transformer is installed at line, this method efficiently solves installs Current Mutual Inductance on operation arrester ground downlead
The problem got an electric shock during device, and easy to operate, it is safe and reliable, effect is good, can avoid the power failure of arrester, it is reliable to improve power supply
Property.
In order to solve the above technical problems, the technical solution adopted by the present invention is：At one kind operation arrester ground downlead
The method for installing current transformer, comprises the following steps：
S1：Confirm arrester information；
S2：The branch road of a powered flow table in parallel on arrester ground downlead；
S3：Arrester ground downlead is disconnected, and checks the ammeter numerical values recited of parallel branch, if ammeter numerical value is zero
Or numerical value very little, show that parallel branch has loose contact, need to find out at cut-off point or virtual connection, can be carried out after being connected firmly
Operate in next step；
S4：Current transformer is embedded on the down conductor of disconnection；
S5：Arrester ground downlead is recovered, and current transformer is fixed on down conductor；
S6：Parallel branch is removed and checks whether the current value on counter of lightning arrester is consistent with step S3, if current value
It is inconsistent, then need further to check the recovery situation under arrester ground lead.
Further, it is necessary to which the arrester information confirmed includes title, numbering, position and the fortune of arrester in step S1
Row state, powered position is specified, and safety shelter, suspension nameplate have been enclosed in workplace.
Further, in step S2, the range of ammeter is 0-5mA, and precision is not less than 0.1mA, wire used in branch road
For the copper wire twisted wire with rubber-covered.
Further, in step S3, turn off arrester down conductor operation when need to wear insulating glove, and
Check the ammeter numerical values recited of parallel branch.If ammeter numerical value is zero or numerical value very little, show that parallel branch is present and connect
It is tactile bad, it need to find out at cut-off point or virtual connection, next step operation can be carried out after being connected firmly.
Further, in step S5, the shape of described current transformer can be annular, square, triangle and it is other not
Regular shape, centre are empty state, can pass through wire.
Further, described copper wire twisted wire diameter is not less than 1mm.
Further, the present invention is applied to the high-voltage conducting wires that voltage class is 110kV and the combined-voltage of the above.
Compared with prior art, beneficial effect is：
1st, the power failure of arrester equipment is avoided, and realizes the current transformer for detecting leakage current of an arrester being arranged on and connects
On ground downlead, to judge that the running status of arrester provides data supporting；
2nd, it is capable of the current transformer of powered zinc oxide surge arresters monitoring, Current Mutual Inductance could be carried out by solving to need to have a power failure in the past
The installation of device；
3rd, the problem got an electric shock when installing current transformer on running arrester ground downlead is efficiently solved, and operates letter
Just, it is safe and reliable, effect is good, can avoid the power failure of arrester, improve power supply reliability.
Brief description of the drawings
Fig. 1 is principle of the invention flow chart；
Fig. 2 is the operation chart of the present invention；
The mark meaning of accompanying drawing 2 is as follows：
7 be high-voltage conducting wires, and 8 be arrester, and 9 be down conductor, and 10 be counter of lightning arrester, and 11 be ground connection, and 12 lead for branch road
Line, 13 be branch current table, and 14 be current transformer.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；It is attached in order to more preferably illustrate the present embodiment
Scheme some parts to have omission, zoom in or out, do not represent the size of actual product；To those skilled in the art,
Some known features and its explanation may be omitted and will be understood by accompanying drawing.Being given for example only property of position relationship described in accompanying drawing
Explanation, it is impossible to be interpreted as the limitation to this patent.
As shown in Figure 1, 2, it is a kind of to run the method that current transformer is installed at arrester ground downlead, including following step
Suddenly：
S1：Confirm arrester information；
S2：The branch road of a powered flow table in parallel on arrester ground downlead；
S3：Arrester ground downlead is disconnected, and checks the ammeter numerical values recited of parallel branch, if ammeter numerical value is zero
Or numerical value very little, show that parallel branch has loose contact, need to find out at cut-off point or virtual connection, can be carried out after being connected firmly
Operate in next step；
S4：Current transformer is embedded on the down conductor of disconnection；
S5：Arrester ground downlead is recovered, and current transformer is fixed on down conductor；
S6：Parallel branch is removed and checks whether the current value on counter of lightning arrester is consistent with step S3, if current value
It is inconsistent, then need further to check the recovery situation under arrester ground lead.
Wherein, specific implementation process is as follows：
(1), confirmation need to install title, numbering, position and the running status of the arrester 8 of current transformer 14, specify electro-mechanical part
Position, and safety shelter, suspension nameplate have been enclosed in workplace.
(2), on the down conductor 9 of arrester 8 a powered flow table 13 in parallel branch road, the range of ammeter 13 is
0-5mA, precision are not less than 0.1mA, and wire 12 used in branch road is the copper wire twisted wire with rubber-covered.
(3) down conductor 9 of arrester 8 is disconnected after, wearing insulating glove, and checks that the ammeter 13 of parallel branch counts
It is worth size.If the numerical value of ammeter 13 is zero or numerical value very little, show that parallel branch has loose contact, cut-off point need to be found out
Or at virtual connection, next step operation can be carried out after being connected firmly.
(4), current transformer 14 is embedded into 9 on the down conductor of arrester 8 of disconnection.
(5), the down conductor 9 of arrester 8 is recovered, and current transformer 14 is clamped securely on down conductor
9。
(6) it is whether consistent when, removing parallel branch, and checking the current value on counter of lightning arrester 10 with step S3.Such as
Fruit current value is inconsistent, then needs further to check the recovery situation of arrester ground downlead 9.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (7)
1. a kind of run the method that current transformer is installed at arrester ground downlead, it is characterised in that comprises the following steps：
S1：Confirm arrester information；
S2：The branch road of a powered flow table in parallel on arrester ground downlead；
S3：Arrester ground downlead is disconnected, and checks the ammeter numerical values recited of parallel branch, if ammeter numerical value is zero
Or numerical value very little, show that parallel branch has loose contact, need to find out at cut-off point or virtual connection, can be carried out after being connected firmly
Operate in next step；
S4：Current transformer is embedded on the down conductor of disconnection；
S5：Arrester ground downlead is recovered, and current transformer is fixed on down conductor；
S6：Parallel branch is removed and checks whether the current value on counter of lightning arrester is consistent with step S3, if current value
It is inconsistent, then need further to check the recovery situation under arrester ground lead.
2. a kind of method for running installation current transformer at arrester ground downlead according to claim 1, it is special
Sign is, it is necessary to which the arrester information confirmed includes title, numbering, position and the running status of arrester, clearly in step S1
Powered position, and safety shelter, suspension nameplate have been enclosed in workplace.
3. a kind of method for running installation current transformer at arrester ground downlead according to claim 1, it is special
Sign is, in step S2, wire used in branch road is the copper wire twisted wire with rubber-covered.
4. a kind of method for running installation current transformer at arrester ground downlead according to claim 3, it is special
Sign is that described copper wire twisted wire diameter is not less than 1mm.
5. a kind of method for running installation current transformer at arrester ground downlead according to claim 1, it is special
Sign is, needs to wear insulating glove in step S3, during the down conductor operation for turning off arrester, and checks branch in parallel
The ammeter numerical values recited on road, if ammeter numerical value is zero or numerical value very little, show that parallel branch has loose contact, need to look into
Find out at cut-off point or virtual connection, next step operation can be carried out after being connected firmly.
6. a kind of method for running installation current transformer at arrester ground downlead according to claim 1, it is special
Sign is, in step S5, the current transformer is shaped as annular or square or triangle.
7. the side of current transformer is installed at a kind of operation arrester ground downlead according to claim any one of 1-6
Method, it is characterised in that be empty state among the current transformer, wire can be passed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710807229.XA CN107505490A (en) | 2017-09-08 | 2017-09-08 | It is a kind of to run the method that current transformer is installed at arrester ground downlead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710807229.XA CN107505490A (en) | 2017-09-08 | 2017-09-08 | It is a kind of to run the method that current transformer is installed at arrester ground downlead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107505490A true CN107505490A (en) | 2017-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710807229.XA Pending CN107505490A (en) | 2017-09-08 | 2017-09-08 | It is a kind of to run the method that current transformer is installed at arrester ground downlead |
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| Country | Link |
|---|---|
| CN (1) | CN107505490A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552434A (en) * | 2008-12-12 | 2009-10-07 | 河南省电力公司信阳供电公司 | Bypass current working method |
| CN103441483A (en) * | 2013-08-29 | 2013-12-11 | 宝鸡石油机械有限责任公司 | Lightning arrester device |
| CN104715913A (en) * | 2015-03-26 | 2015-06-17 | 国网上海市电力公司 | Sampling device for pincer-shaped resistive current transformer |
| CN205693210U (en) * | 2016-05-30 | 2016-11-16 | 国网河南省电力公司电力科学研究院 | For spark gap charged for replacement leakage current table special complete instrument |
-
2017
- 2017-09-08 CN CN201710807229.XA patent/CN107505490A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552434A (en) * | 2008-12-12 | 2009-10-07 | 河南省电力公司信阳供电公司 | Bypass current working method |
| CN103441483A (en) * | 2013-08-29 | 2013-12-11 | 宝鸡石油机械有限责任公司 | Lightning arrester device |
| CN104715913A (en) * | 2015-03-26 | 2015-06-17 | 国网上海市电力公司 | Sampling device for pincer-shaped resistive current transformer |
| CN205693210U (en) * | 2016-05-30 | 2016-11-16 | 国网河南省电力公司电力科学研究院 | For spark gap charged for replacement leakage current table special complete instrument |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20171222 |