CN109324214A - Combined arrester leakage current measurement device - Google Patents
Combined arrester leakage current measurement device Download PDFInfo
- Publication number
- CN109324214A CN109324214A CN201811401176.2A CN201811401176A CN109324214A CN 109324214 A CN109324214 A CN 109324214A CN 201811401176 A CN201811401176 A CN 201811401176A CN 109324214 A CN109324214 A CN 109324214A
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- 238000005259 measurement Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 52
- 238000012360 testing method Methods 0.000 claims abstract description 48
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000003449 preventive effect Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention relates to arrester checks technical fields, it is a kind of combined arrester leakage current measurement device, it includes display unit, Current Voltage detection unit, the calculation control unit for calculating main circuit current and non-tested circuit Leakage Current difference for measuring test main circuit current and non-subject circuit Leakage Current, there are four input terminals for connection in Current Voltage detection unit, Current Voltage detection unit is connect with calculation control unit, and display unit is connect with Current Voltage detection unit and calculation control unit respectively.For the present invention by binary channels current acquisition, test current is calculated in converted circuit, comparison circuit, subtraction circuit.It solves leakage current measurement under existing DC reference voltage and 0.75 times of DC reference voltage and needs multiple electric current meters, wiring complexity, error-prone problem, in the case where meeting on-the-spot test requirement, simplify test connection, the workload for reducing testing crew data statistics, improves test efficiency and accuracy.
Description
Technical field
The present invention relates to arrester checks technical fields, are a kind of combined arrester leakage current measurement devices.
Background technique
Arrester is important one of the electrical equipment of electric system, it plays important work to the safe operation of electric system
With.In order to guarantee that arrester is safe and reliable in the power system, according to power industry standard DL/T 596-2015 " electric power
Equipment preventive trial regulation " it needs to carry out preventive trial, wherein on-site test DC reference voltage and 0.75 to arrester
Leakage current test is to judge the whether normal important tests project of arrester under times DC reference voltage.
Joined according to what is provided in DL/T 474.5-2006 " directive/guide test of lightning arrester is implemented in live Insulation Test " about direct current
It examines voltage and 0.75 times of DC reference voltage test method, scene needs to provide at least two ammeters, can undoubtedly make live examination
Test wiring complexity.Once live test item quantity is larger, a large amount of data statistics will be brought to calculate work to testing crew, increased
Add the workload of testing crew, simultaneously because heavy workload, error-prone, test result is impacted.
Summary of the invention
The present invention provides a kind of combined arrester leakage current measurement device, overcome the above-mentioned prior art no
Foot can effectively solve the complexity of wiring existing for existing lightning arrester leakance measuring device, error-prone problem.
The technical scheme is that realized by following measures: a kind of combined arrester leakage current measurement dress
Set, including display unit, for measure test main circuit current and it is non-subject circuit Leakage Current Current Voltage detection unit,
For calculating the calculation control unit of main circuit current and non-tested circuit Leakage Current difference, connect in Current Voltage detection unit
It connects there are four input terminal, respectively first input end, the second input terminal, third input terminal and the 4th input terminal,
Current Voltage detection unit is connect with calculation control unit, and display unit is single with Current Voltage detection unit and calculating control respectively
Member connection.
Here is the further optimization and/or improvements to invention technology described above scheme:
Above-mentioned calculation control unit may include comparison circuit and subtraction circuit, Current Voltage detection unit respectively with comparison circuit and
Subtraction circuit connection, comparison circuit are connect with subtraction circuit.
Above-mentioned Current Voltage detection unit may include measurement test main circuit current the first Current Voltage detection circuit and
The second Current Voltage detection circuit of non-subject circuit Leakage Current is measured, first input end and the second input terminal are connected to
In first Current Voltage detection circuit, third input terminal and the 4th input terminal are connected to the second Current Voltage detection circuit
On.
It is above-mentioned to may also include DC high voltage generating unit, DC high voltage generating unit and the first Current Voltage detection electricity
One input terminal on road connects.
Above-mentioned display unit may include analog to digital conversion circuit and display screen, Current Voltage detection unit and subtraction circuit with
Analog to digital conversion circuit connection, analog to digital conversion circuit are connect with display screen.
It is above-mentioned to may also include insulation shell, Current Voltage detection unit, comparison circuit, subtraction circuit and analog to digital conversion circuit
It is respectively positioned on inside insulation shell, first input end, the second input terminal, third input terminal, the 4th input terminal and display
Screen is located on insulation shell.
Structure of the invention is reasonable and compact, easy to use, provide a kind of on-site test D.C. reference voltage of arrester and
The measuring device of leakage current under 0.75 times of DC reference voltage.It is electric by conversion circuit, comparison by binary channels current acquisition
Test current is calculated in road, subtraction circuit.It solves and leaks electricity under existing DC reference voltage and 0.75 times of DC reference voltage
Flow measurement needs multiple electric current meters, wiring complexity, heavy workload, error-prone problem, in the feelings for meeting on-the-spot test requirement
Under condition, test connection is simplified, the workload of testing crew data statistics is reduced, improves test efficiency and accuracy.
Detailed description of the invention
Attached drawing 1 is electrical block diagram of the invention.
Attached drawing 2 is the circuit diagram of comparison circuit in attached drawing 1.
Attached drawing 3 is the circuit diagram of subtraction circuit in attached drawing 1.
Attached drawing 4 is the circuit diagram of the first Current Voltage detection circuit and the second Current Voltage detection circuit in attached drawing 1.
Attached drawing 5 is the usage state diagram that arrester is saved on present invention measurement subject arrester.
Coding in attached drawing is respectively as follows: 1 for first input end, and 2 be the second input terminal, and 3 be third input terminal, and 4
It is upper section arrester for the 4th input terminal, 5,6 be middle section arrester, and 7 be lower section arrester.
Specific embodiment
The present invention is not limited by the following examples, can determine according to the technique and scheme of the present invention with actual conditions specific
Embodiment.
Below with reference to examples and drawings, the invention will be further described:
As shown in Fig. 1, the combined arrester leakage current measurement device, including display unit, for measure test lead back
The Current Voltage detection unit of road electric current and non-subject circuit Leakage Current is let out for calculating main circuit current and non-tested circuit
Reveal the calculation control unit of current differential, there are four input terminal, the respectively first inputs for connection in Current Voltage detection unit
Terminal 1, the second input terminal 2, third input terminal 3 and the 4th input terminal 4, Current Voltage detection unit and calculating control are single
Member connection, display unit are connect with Current Voltage detection unit and calculation control unit respectively.
Four input terminals connected in above-mentioned Current Voltage detection unit form two current sense input mouths, respectively
Main circuit current I is tested for measuring1With non-subject circuit Leakage Current I2.Calculation control unit is for judging test major loop
Electric current I1Whether non-subject circuit Leakage Current I is greater than2, i.e. test main circuit current I1Whether revealed prior to non-subject circuit electric
Flow I2Reach nmA, if then calculating test main circuit current I1With non-subject circuit Leakage Current I2Difference, if not then not
Calculating difference.Display unit is for showing test main circuit current I1, non-subject circuit Leakage Current I2, test main circuit current
I1With non-subject circuit Leakage Current I2Difference.
The present invention is use process is as follows shown:
1, main circuit current I is tested into measurement1Two input terminals access test major loop in, i.e. input terminal and straight
High pressure generator connection is flowed, another input terminal is connect with the ungrounded end of arrester subject part；Non- subject circuit is let out
Reveal electric current I2Two input terminals access non-subject circuit, i.e. an input terminal is connect with non-subject part lower end, another
A input terminal ground connection；
2, compare arrester equipment delivery test report, determine subject arrester leakage current n(unit mA) and the electric current under
Test voltage, using the voltage value as test reference voltage；
3, it is pressurizeed using high voltage direct current generator, the I that observation display unit is shown1、I2And the difference of the two, it is to be shown full
Sufficient I1> I2And I1-I2When=n, stop pressurization, and record the voltage that high voltage direct current generator controller is shown at this time；
4, it is compared with delivery test value, in this, as the foundation of arrester performance judgement.
The present invention provides leak electricity under a kind of on-site test D.C. reference voltage of arrester and 0.75 times of DC reference voltage
The measuring device of stream.By binary channels current acquisition, test electricity is calculated by conversion circuit, comparison circuit, subtraction circuit
Stream.It solves the multiple electric current meters of leakage current measurement needs under existing DC reference voltage and 0.75 times of DC reference voltage, connects
Line complexity, heavy workload, error-prone problem simplify test connection in the case where meeting on-the-spot test requirement, reduce examination
The workload for testing demographic data's statistics, improves test efficiency and accuracy.
Can said combination formula leakage current of an arrester measuring device be advanced optimized or/and be changed according to actual needs
Into:
As shown in attached drawing 1,2,3, the calculation control unit includes comparison circuit and subtraction circuit, Current Voltage detection unit point
It is not connect with comparison circuit and subtraction circuit, comparison circuit is connect with subtraction circuit.
Above-mentioned comparison circuit is existing well-known technique, and physical circuit is as shown in Fig. 2, comparison circuit is led back for judging to test
Road electric current I1Whether non-subject circuit Leakage Current I is greater than2, if so, comparison circuit exports high level, carry out subtraction circuit
Difference operation, if it is not, then exporting low level, subtraction circuit is without difference operation；
Above-mentioned subtraction circuit is existing well-known technique, and physical circuit is as shown in figure 3, subtraction circuit is electric for calculating test major loop
Flow I1With non-subject circuit Leakage Current I2Difference.
As shown in attached drawing 1,4, the Current Voltage detection unit includes the first electric current electricity of measurement test main circuit current
It presses detection circuit and measures the second Current Voltage detection circuit of non-subject circuit Leakage Current, first input end 1 and second
Input terminal 2 is connected in the first Current Voltage detection circuit, and third input terminal 3 and the 4th input terminal 4 are connected to second
In Current Voltage detection circuit.
Above-mentioned first Current Voltage detection circuit and the second Current Voltage detection circuit are existing well-known technique, specific electricity
Road is as shown in figure 4, the first Current Voltage detection circuit tests main circuit current I for measuring1, the second Current Voltage detection circuit
For measuring non-subject circuit Leakage Current I2。
When using the present invention, first input end 1, the access of the second input terminal 2 are tested in major loop, first input end
Son 1 is connect with high voltage direct current generator, and the second input terminal 2 is connect with the ungrounded end of arrester subject part, and third is defeated
Enter terminal 3, the 4th input terminal 4 accesses non-subject circuit, third input terminal 3 is connect with non-subject part lower end, and the 4th is defeated
Enter the ground connection of terminal 4；
As shown in figure 5, if upper 5 leakage current of section arrester of test subject arrester, high by first input end 1 and direct current
Press generator connection, the second input terminal 2 is connected between section arrester 5 and middle section arrester 6, third input terminal 3 with
The lower end of lower section arrester 7 connects, the 4th input terminal 4 ground connection.
It further include DC high voltage generating unit, DC high voltage generating unit and the first electric current electricity as shown in attached drawing 1,5
Press the input terminal connection of detection circuit.
Above-mentioned DC high voltage generating unit is existing well-known technique, can be generators of high direct voltage, for pressurizeing.
As shown in Fig. 1, the display unit includes analog to digital conversion circuit and display screen, Current Voltage detection unit and is subtracted
Method circuit is connect with analog to digital conversion circuit, and analog to digital conversion circuit is connect with display screen.
It as shown in Fig. 1, further include insulation shell, Current Voltage detection unit, comparison circuit, subtraction circuit and modulus turn
It changes circuit to be respectively positioned on inside insulation shell, first input end 1, the second input terminal 2, third input terminal 3, the 4th input terminal
Son 4 and display location are on insulation shell.
The above technical characteristic constitutes highly preferred embodiment of the present invention, with stronger adaptability and best implementation effect
Fruit can increase and decrease non-essential technical characteristic, according to actual needs to meet the needs of different situations.
Claims (8)
1. a kind of combined arrester leakage current measurement device, it is characterised in that including display unit, for measuring test master
Loop current and it is non-subject circuit Leakage Current Current Voltage detection unit, for calculating main circuit current and non-tested circuit
The calculation control unit of Leakage Current difference, there are four input terminals for connection in Current Voltage detection unit, and respectively first is defeated
Enter terminal, the second input terminal, third input terminal and the 4th input terminal, Current Voltage detection unit and calculation control unit
Connection, display unit are connect with Current Voltage detection unit and calculation control unit respectively.
2. combined arrester leakage current measurement device according to claim 1, it is characterised in that the calculating control
Unit includes comparison circuit and subtraction circuit, and Current Voltage detection unit connect with comparison circuit and subtraction circuit respectively, compares
Circuit is connect with subtraction circuit.
3. combined arrester leakage current measurement device according to claim 1 or 2, it is characterised in that the electric current electricity
Pressure detection unit includes the first Current Voltage detection circuit and the non-subject circuit leakage electricity of measurement of measurement test main circuit current
Second Current Voltage detection circuit of stream, first input end and the second input terminal are connected to the first Current Voltage detection circuit
On, third input terminal and the 4th input terminal are connected in the second Current Voltage detection circuit.
4. combined arrester leakage current measurement device according to claim 3, it is characterised in that further include direct current height
Voltage generating unit, DC high voltage generating unit are connect with an input terminal of the first Current Voltage detection circuit.
5. combined arrester leakage current measurement device according to claim 2 or 4, it is characterised in that the display is single
Member includes analog to digital conversion circuit and display screen, and Current Voltage detection unit and subtraction circuit are connect with analog to digital conversion circuit, mould
Number conversion circuit is connect with display screen.
6. combined arrester leakage current measurement device according to claim 3, it is characterised in that the display unit
Including analog to digital conversion circuit and display screen, Current Voltage detection unit and subtraction circuit are connect with analog to digital conversion circuit, modulus
Conversion circuit is connect with display screen.
7. combined arrester leakage current measurement device according to claim 5, it is characterised in that further include insulation shell
Body, Current Voltage detection unit, comparison circuit, subtraction circuit and analog to digital conversion circuit are respectively positioned on inside insulation shell, and first is defeated
Enter terminal, the second input terminal, third input terminal, the 4th input terminal and display location on insulation shell.
8. combined arrester leakage current measurement device according to claim 6, it is characterised in that further include insulation shell
Body, Current Voltage detection unit, comparison circuit, subtraction circuit and analog to digital conversion circuit are respectively positioned on inside insulation shell, and first is defeated
Enter terminal, the second input terminal, third input terminal, the 4th input terminal and display location on insulation shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401176.2A CN109324214A (en) | 2018-11-22 | 2018-11-22 | Combined arrester leakage current measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401176.2A CN109324214A (en) | 2018-11-22 | 2018-11-22 | Combined arrester leakage current measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109324214A true CN109324214A (en) | 2019-02-12 |
Family
ID=65258264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811401176.2A Pending CN109324214A (en) | 2018-11-22 | 2018-11-22 | Combined arrester leakage current measurement device |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592701A (en) * | 2009-07-03 | 2009-12-02 | 江苏省电力公司常州供电公司 | Direct-current voltage withstanding test method for multilevel zinc oxide lightning arresters |
| KR20100031919A (en) * | 2008-09-16 | 2010-03-25 | 한국철도기술연구원 | Device for measuring leakage current of dc lightning arrester |
| CN201449423U (en) * | 2009-07-03 | 2010-05-05 | 江苏省电力公司常州供电公司 | Test device for DC withstand voltage test of multi-stage zinc oxide arresters |
| CN102023249A (en) * | 2009-09-17 | 2011-04-20 | 上海市电力公司超高压输变电公司 | Method for performing preventive test without detaching high-voltage lead of 220-kV zinc oxide arrestor |
| CN103185829A (en) * | 2013-04-02 | 2013-07-03 | 国家电网公司 | Leakage current testing method and device |
| CN103604981A (en) * | 2013-11-30 | 2014-02-26 | 国网新疆电力公司检修公司 | Remote control zero clearing device of arrester counters |
| CN204228800U (en) * | 2014-10-11 | 2015-03-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of multi-channel DC microampere meter |
| WO2015117304A1 (en) * | 2014-02-07 | 2015-08-13 | 国电南瑞科技股份有限公司 | System for online monitoring of zinc oxide arrester and method thereof |
| CN106501584A (en) * | 2016-12-07 | 2017-03-15 | 国家电网公司 | Leakage Current of Zinc-oxide Lightning Arresters measuring method |
| CN206161715U (en) * | 2016-10-10 | 2017-05-10 | 华北电力大学（保定） | Non -contact multichannel direct current detection device and system |
| CN209690353U (en) * | 2018-11-22 | 2019-11-26 | 国网新疆电力有限公司电力科学研究院 | Combined arrester leakage current measurement device |
-
2018
- 2018-11-22 CN CN201811401176.2A patent/CN109324214A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100031919A (en) * | 2008-09-16 | 2010-03-25 | 한국철도기술연구원 | Device for measuring leakage current of dc lightning arrester |
| CN101592701A (en) * | 2009-07-03 | 2009-12-02 | 江苏省电力公司常州供电公司 | Direct-current voltage withstanding test method for multilevel zinc oxide lightning arresters |
| CN201449423U (en) * | 2009-07-03 | 2010-05-05 | 江苏省电力公司常州供电公司 | Test device for DC withstand voltage test of multi-stage zinc oxide arresters |
| CN102023249A (en) * | 2009-09-17 | 2011-04-20 | 上海市电力公司超高压输变电公司 | Method for performing preventive test without detaching high-voltage lead of 220-kV zinc oxide arrestor |
| CN103185829A (en) * | 2013-04-02 | 2013-07-03 | 国家电网公司 | Leakage current testing method and device |
| CN103604981A (en) * | 2013-11-30 | 2014-02-26 | 国网新疆电力公司检修公司 | Remote control zero clearing device of arrester counters |
| WO2015117304A1 (en) * | 2014-02-07 | 2015-08-13 | 国电南瑞科技股份有限公司 | System for online monitoring of zinc oxide arrester and method thereof |
| CN204228800U (en) * | 2014-10-11 | 2015-03-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of multi-channel DC microampere meter |
| CN206161715U (en) * | 2016-10-10 | 2017-05-10 | 华北电力大学（保定） | Non -contact multichannel direct current detection device and system |
| CN106501584A (en) * | 2016-12-07 | 2017-03-15 | 国家电网公司 | Leakage Current of Zinc-oxide Lightning Arresters measuring method |
| CN209690353U (en) * | 2018-11-22 | 2019-11-26 | 国网新疆电力有限公司电力科学研究院 | Combined arrester leakage current measurement device |
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Application publication date: 20190212 |