CN107132465A - A kind of line parameter circuit value auxiliary test unit and method - Google Patents
A kind of line parameter circuit value auxiliary test unit and method Download PDFInfo
- Publication number
- CN107132465A CN107132465A CN201710513207.2A CN201710513207A CN107132465A CN 107132465 A CN107132465 A CN 107132465A CN 201710513207 A CN201710513207 A CN 201710513207A CN 107132465 A CN107132465 A CN 107132465A
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- China
- Prior art keywords
- unit
- line
- circuit value
- potting
- contactor
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Classifications
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of line parameter circuit value auxiliary test unit, unit is suppressed with three-phase electricity connection, including high-potting line unit, A.C. contactor unit, switch element, induced voltage；The input terminal of high-potting line unit is connected with each phase power transmission line of three-phase electricity circuit respectively, the lead-out terminal of high-potting line unit is connected with one end of A.C. contactor unit, one end that the other end of A.C. contactor unit suppresses unit with induced voltage all the way is connected, the fixing end connection of another road and switch element；Induced voltage suppresses the other end ground connection of unit, another fixing end ground connection of switch element.Also disclose a kind of line parameter circuit value auxiliary test methods.
Description
Technical field
The present invention relates to power circuit technical field of measurement and test, especially a kind of line parameter circuit value auxiliary test unit and method.
Background technology
The higher circuit of line influence voltage constitutes larger threat to workmen's personal safety, to ensure personnel and equipment
Safety, experiment thread-changing need by line side earthing knife-switch close position, then could thread-changing, earthing knife-switch is separated again after thread-changing and tested, point
The number of times for closing earthing knife-switch is a lot, takes a lot.
In the experiment of conventional high induction voltage circuit, during Insulation test, induced voltage too high (more than 10000V) is very
Easily insulating megger is punctured, testing crew is threatened safely, circuit nuclear phase is grounded often through by circuit one side, then
See that the reduction of induced voltage simply judges phase sequence and insulation, not intuitively.
Existing scheme can suppress induced voltage by induced voltage suppressor, but can not reduce in experiment and be grounded
The division number of times of disconnecting link, therefore the line parameter circuit value testing time can not be shortened.
The content of the invention
It is an object of the invention to provide a kind of line parameter circuit value auxiliary test unit, the number of times of division earthing knife-switch is on the one hand reduced,
Test efficiency is improved, on the other hand can suppress induced voltage, insulation and nuclear phase work is conveniently shaken；Another further aspect can division on the spot
Line-to-ground is so as to increasing experiment security.
To achieve the above object, the present invention uses following technical proposals：
A kind of line parameter circuit value auxiliary test unit, with three-phase electricity connection, it is characterised in that including high-potting line list
Member, A.C. contactor unit, switch element, induced voltage suppress unit；The input terminal of high-potting line unit is respectively with three
Each phase power transmission line connection of phase electric line, the lead-out terminal of high-potting line unit connects with one end of A.C. contactor unit
Connect, one end that the other end of A.C. contactor unit suppresses unit with induced voltage all the way is connected, another road and switch element
One fixing end is connected；Induced voltage suppresses the other end ground connection of unit, another fixing end ground connection of switch element.
Further, the high-potting line unit includes three groups of high-potting lines, the input of each group of high-potting line
End is connected with test clip respectively, and test clip is connected with each phase power transmission line of three-phase electricity transmission line of electricity respectively；Each group of high pressure examination
The output end for testing line is connected with testing terminal, and testing terminal is connected with the input of A.C. contactor respectively.
Further, induced voltage, which suppresses unit, includes some electric capacity being connected in series.
It is a further object to provide a kind of line parameter circuit value auxiliary test methods, comprise the following steps：
Shake isolation step：Insulating megger is connected, three-phase electricity circuit is insulated successively, nuclear phase testing experiment, insulation is shaken
Table has shaken a phase electricity, and switch element is held closure, discharged manually, and electric discharge carries out the Insulation test examination of next phase electricity after terminating
Test, until completing the Insulation Test operation of three-phase electricity；
Line parameter circuit value testing procedure：A.C. contactor unit and switch element carry out parameter measurement all in off-state.
Further, it is described shake isolation step carry out before A.C. contactor unit need to be in closure state.
Further, line parameter circuit value testing procedure needs advanced row line parameter testing line Connection Step before carrying out, and has
Body includes following：A.C. contactor unit and switch element are all in closure state, by the p-wire of parameter testing instrument and three
Phase electric line is connected.
The beneficial effects of the invention are as follows,
Hi-pot test line one end of the present invention connects high-voltage line to be measured, and the other end is sequentially connected A.C. contactor, induced voltage
Suppress unit, when insulation operation is shaken in progress, carry out shaking insulation after A.C. contactor unit is closed, shaken closure switch after a phase
Unit ground connection electric discharge, can avoid personal Danger Electric shock risk；Also can be by sensing even if A.C. contactor unit punctures rear induced voltage
Voltage suppresses unit ground connection, it is ensured that personal safety.When carrying out line test Wiring step, A.C. contactor unit and switch
Unit is closed at being discharged, multiple grounding is ensured personal safety, it is to avoid the repetition opening and closing of switch element during thread-changing.
Brief description of the drawings
Fig. 1 is line parameter circuit value auxiliary test unit schematic diagram of the present invention；
Fig. 2 is that induced voltage suppresses unit connection relation schematic diagram；
Wherein, 1, circuit to be measured, 2, high-potting line, 21, test clip, 22, testing terminal, 3, A.C. contactor, 4, lock
Knife discharge switch, 5, electric capacity suppress unit.
Embodiment
As shown in figure 1, a kind of line parameter circuit value auxiliary test unit, is connected with circuit under test 1, the input of high-potting line 2
End is connected with circuit 1 to be measured respectively by test clip 21, and the output end of Hi-pot test line 2 passes through testing terminal 22 and ac contactor
Device 3 is connected；Because induced voltage seldom can exceed that 10kV, A.C. contactor 3 selects pressure-resistant scope to be fully met in more than 3.6kV
It is required that, the other end of A.C. contactor 3 is connected with plug-in strip discharge switch 4 all the way, and another road connects with induced voltage suppression module 5
Connect；The other end ground connection of plug-in strip discharge switch 4, the other end ground connection of induced voltage suppression module 5.
As shown in Fig. 2 induced voltage suppression module 5 is using 24 pressure-resistant 450V, the CBB electric capacity of capacity 50 passes through series connection
Realize.Wherein IN is high-pressure side, and GND is earth terminal.By series connection, the electric capacity of induced voltage suppression module is finally 2 μ F.
A kind of line parameter circuit value auxiliary test methods, comprise the following steps：
Shake isolation step：Closure state need to be in by shaking A.C. contactor 3 before isolation step is carried out.Connect insulating megger,
Treat successively survey line road 1 insulated, nuclear phase testing experiment, insulating megger shaken one mutually electricity, plug-in strip discharge switch 4 manually end close
Close, discharged, electric discharge carries out the Insulation test experiment of next phase electricity after terminating, until completing the Insulation Test behaviour of three-phase electricity
Make.
Line parameter circuit value p-wire Connection Step, is specifically included following：A.C. contactor 3 and plug-in strip discharge switch 4 all in
Closure state, the p-wire of parameter testing instrument is connected with circuit 1 to be measured.
Line parameter circuit value testing procedure：A.C. contactor 3 and plug-in strip discharge switch 4 carry out parameter survey all in off-state
Amount.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (6)
1. a kind of line parameter circuit value auxiliary test unit, with three-phase electricity connection, it is characterised in that including high-potting line list
Member, A.C. contactor unit, switch element, induced voltage suppress unit；The input terminal of high-potting line unit is respectively with three
Each phase power transmission line connection of phase electric line, the lead-out terminal of high-potting line unit connects with one end of A.C. contactor unit
Connect, one end that the other end of A.C. contactor unit suppresses unit with induced voltage all the way is connected, another road and switch element
One fixing end is connected；Induced voltage suppresses the other end ground connection of unit, another fixing end ground connection of switch element.
2. a kind of line parameter circuit value auxiliary test unit as claimed in claim 1, it is characterised in that the high-potting line unit
Including three groups of high-potting lines, the input of each group of high-potting line is connected with test clip respectively, test clip respectively with three-phase
Each phase power transmission line connection of electric transmission line of electricity；The output end of each group of high-potting line is connected with testing terminal, testing terminal
It is connected respectively with the input of A.C. contactor.
3. a kind of line parameter circuit value auxiliary test unit as claimed in claim 1, it is characterised in that induced voltage suppresses unit bag
Include some electric capacity being connected in series.
4. a kind of line parameter circuit value auxiliary test methods, using the test device of claims 1 to 3, it is characterised in that including following
Step：
Shake isolation step：Insulating megger is connected, three-phase electricity circuit is insulated successively, nuclear phase testing experiment, insulating megger shakes
Complete one is mutually electric, and switch element is held closure, discharged manually, and electric discharge carries out the Insulation test experiment of next phase electricity after terminating, directly
To the Insulation Test operation for completing three-phase electricity；
Line parameter circuit value testing procedure：A.C. contactor unit and switch element carry out parameter measurement all in off-state.
5. a kind of line parameter circuit value auxiliary test methods as claimed in claim 4, it is characterised in that described to shake isolation step progress
A.C. contactor unit need to be in closure state before.
6. a kind of line parameter circuit value auxiliary test methods as claimed in claim 4, it is characterised in that line parameter circuit value testing procedure enters
Advanced row line parameter testing line Connection Step is needed before row, is specifically included following：A.C. contactor unit and switch element
All in closure state, by the p-wire of parameter testing instrument and three-phase electricity connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513207.2A CN107132465A (en) | 2017-06-29 | 2017-06-29 | A kind of line parameter circuit value auxiliary test unit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513207.2A CN107132465A (en) | 2017-06-29 | 2017-06-29 | A kind of line parameter circuit value auxiliary test unit and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107132465A true CN107132465A (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710513207.2A Withdrawn CN107132465A (en) | 2017-06-29 | 2017-06-29 | A kind of line parameter circuit value auxiliary test unit and method |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342878A (en) * | 2018-09-14 | 2019-02-15 | 国网山西省电力公司晋城供电公司 | A kind of Electrical Power Line Parameter detection auxiliary system based on Internet of Things |
| CN109374954A (en) * | 2018-08-22 | 2019-02-22 | 国网天津市电力公司电力科学研究院 | A kind of novel power transmission line parameter circuit value measurement test wire |
| CN110319886A (en) * | 2019-07-24 | 2019-10-11 | 国网河南省电力公司漯河供电公司 | Match net state real-time information collection and fault diagnosis system based on cloud computing |
| CN115616444A (en) * | 2022-09-26 | 2023-01-17 | 国网山东省电力公司淄博供电公司 | Auxiliary grounding device for power transmission line parameter test |
-
2017
- 2017-06-29 CN CN201710513207.2A patent/CN107132465A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374954A (en) * | 2018-08-22 | 2019-02-22 | 国网天津市电力公司电力科学研究院 | A kind of novel power transmission line parameter circuit value measurement test wire |
| CN109374954B (en) * | 2018-08-22 | 2020-11-13 | 国网天津市电力公司电力科学研究院 | Novel transmission line parameter measurement test line |
| CN109342878A (en) * | 2018-09-14 | 2019-02-15 | 国网山西省电力公司晋城供电公司 | A kind of Electrical Power Line Parameter detection auxiliary system based on Internet of Things |
| CN110319886A (en) * | 2019-07-24 | 2019-10-11 | 国网河南省电力公司漯河供电公司 | Match net state real-time information collection and fault diagnosis system based on cloud computing |
| CN115616444A (en) * | 2022-09-26 | 2023-01-17 | 国网山东省电力公司淄博供电公司 | Auxiliary grounding device for power transmission line parameter test |
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Application publication date: 20170905 |