CN207336738U - A kind of device for supply line's threephase current transformer secondary circuit Check up polarity - Google Patents
A kind of device for supply line's threephase current transformer secondary circuit Check up polarity Download PDFInfo
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- CN207336738U CN207336738U CN201721088083.XU CN201721088083U CN207336738U CN 207336738 U CN207336738 U CN 207336738U CN 201721088083 U CN201721088083 U CN 201721088083U CN 207336738 U CN207336738 U CN 207336738U
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- 230000005611 electricity Effects 0.000 claims description 3
- 230000005404 monopole Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of device for supply line's threephase current transformer secondary circuit Check up polarity, it is related to electrical technology field；It includes the primary side power supply circuit of threephase current transformer and secondary side polarity detection circuit；The primary side power supply circuit is made of 3 power supply branches of the first DC power supply DC1, battery main switch K0, button switch AN and A C phases, the battery main switch K0 is double-pole single throw, the structure of 3 power supply branches of the A C phases is identical, wherein A phases power branch route A phase primary sides wire connection terminal AP1 and AP2 and the first double-pole single throw K1 composition；A kind of device for supply line's threephase current transformer secondary circuit Check up polarity is by detecting the technologies such as control and intelligent prompt, realize that a staff can complete Detection task, working time was reduced to 40 minutes by original 90 minutes, and work efficiency improves 55%.
Description
Technical field
Electrical technology field is the utility model is related to, more particularly to it is a kind of secondary for supply line's threephase current transformer
The device of loop polarity detection.
Background technology
At present, new clothes or while replacing Current Transmit, need to detect the polarity of its secondary circuit, and conventional method is utilizes
Dc-battery accesses current transformer primary side, and the correspondence being then connected on milliammeter or milivoltmeter in wiring terminal box is separate
On the wire connection terminal of secondary coil, current transformer primary side moment is passed through direct current, checks that the pointer deviation of milliammeter judges
Polarity correctness.The drawbacks of this method, has：
1st, since 220kV and above current transformer installation site are higher, it usually needs at least three personnel are coordinated
Work；
2nd, 220kV and Above Transmission Lines current transformer primary side induced voltage are higher, there is the induced electricity injury to people,
220kV switching circuit induced voltage peak values can reach 120V or so；
The 3rd, if personnel's wiring of current transformer primary side and Current Transformer Secondary side cooperating is incorrect to lead
Result of the test mistake is caused, influences to protect equipment bringing normally into operation；
4th, Current Transformer Secondary side testing staff needs to change the on-position of secondary side milliammeter or milivoltmeter repeatedly,
There are the possible factor of wrong line, influences result of the test, and waste the working time.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of secondary for supply line's threephase current transformer
The device of loop polarity detection, a kind of device for supply line's threephase current transformer secondary circuit Check up polarity lead to
The technologies such as detection control and intelligent prompt are crossed, realize that a staff can complete Detection task, the working time is by original
It is reduced within 90 minutes 40 minutes, work efficiency improves 55%.
In order to solve the above technical problems, technical solution adopted in the utility model is：Including threephase current transformer
Primary side power supply circuit and secondary side polarity detection circuit；
The primary side power supply circuit by the first DC power supply DC1, battery main switch K0, button switch AN and A-C phase 3
A power supply branch composition, the battery main switch K0 is double-pole single throw, the structure phase of 3 power supply branches of the A-C phases
Together, wherein A phases power branch route A phase primary sides wire connection terminal AP1 and AP2 and the first double-pole single throw K1 composition, institute
The wire connection terminal AP1 and AP2 for stating A phase primary sides are Same Name of Ends；The wire connection terminal AP1 of the A phases primary side is through the first double-pole list
The contact 4 and contact 2 of throw switch K1 meet the contact N of button switch AN, and the contact M of button switch AN meets the first DC power supply DC1
Cathode, contact 2 and contact 4 of the wire connection terminal AP2 through battery main switch K0 of the A phases primary side connect the first DC power supply
The anode of DC1；
The secondary side polarity detection circuit is by the Same Name of Ends wire connection terminal of 6 groups of coils of secondary side of A-C phases and corresponding
Double-pole single throw composition 6 Same Name of Ends wire connection terminal branches, A-C phases secondary side 6 groups of coils public terminated line
Terminal AS2, BS2, CS2 3 common port wire connection terminal branches that double-pole single throw forms respectively and accordingly and two-way pendulum
Dynamic milliammeter A compositions, the structure of 6 Same Name of Ends wire connection terminal branch is identical, wherein the first Same Name of Ends wire connection terminal branch
Route Same Name of Ends wire connection terminal 1S1 and the 4th double-pole single throw the K4 composition of first group of coil, first group of coil it is same
The cathode for the milliammeter A that name termination contact 4 and contact 2 of the line terminals 1S1 through the 4th double-pole single throw K4 connect bidirectional swinging connects
Line end；The structure of 3 common ports wire connection terminal branch is identical, and the wherein public terminated line terminal branch of A phases is by the secondary of A phases
Common port wire connection terminal AS2 and the tenth double-pole single throw the K10 composition of side, the common port terminals of the secondary side of the A phases
Contact 4 and contact 2 of the sub- AS2 through the tenth double-pole single throw K10 connect the negative terminals of the milliammeter A of bidirectional swinging.
Further technical solution is：The primary side power supply circuit and secondary side polarity detection circuit further include finger
Indication lamp circuit, the indicator light circuit of primary side power supply circuit is identical with the indicator light circuit structure of secondary side polarity detection circuit,
Wherein the indicator light circuit of primary side power supply circuit is by the second DC power supply DC2,3 instructions of battery main switch K0 and A-C phase
Lamp branch forms；3 indicator light branch structures of the A-C phases are identical, wherein A phases indicator light branch route the first indicator light D1 and
First double-pole single throw K1 is formed；The contact 3 of one end the first double-pole single throw K1 of the first indicator light D1 and connect
Point 1 connects the cathode of the second DC power supply DC2, and contact 1 and contact 3 of the other end through battery main switch K0 of the first indicator light D1 connect
The anode of second DC power supply DC2.
It is using beneficial effect caused by above-mentioned technical proposal：
First, it is easy to operate, efficient, it is only necessary to which that a staff can complete Detection task, and the working time is by original
Be reduced within 90 minutes 40 minutes, work efficiency improves 55%.Before detection, after disposably detection line is connected, directly examine
Survey, during detection, once noting abnormalities, directly correct the false wiring order in lower terminal box, without frequently past again
Ascend a height again, saved the time.
Second, primary voltage, primary current, secondary voltage, the secondary current in detection are smaller, and operation is very safe.
3rd, indicating circuit has an intelligent prompt function, during detection, easily know be detection which branch, be easy to
Instruct detection and error correction.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is the panel figure of the utility model；
Fig. 3 is the utility model wire connection terminal with threephase current transformer once, the connection figure of secondary coil circuit.
Embodiment
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, be fully described by, it is clear that described embodiment is only the part of the embodiment of the utility model, rather than whole realities
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Many details are elaborated in the following description in order to fully understand the utility model, but this practicality is new
Type can also be implemented using other different from other manner described here, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case of new intension, therefore the utility model is from the limitation of following public specific embodiment.
As shown in Figure 1-Figure 3, the utility model discloses one kind to be directed to supply line's threephase current transformer secondary circuit
The device of Check up polarity, it includes detection case and is arranged on the panel of detection case top operational, further includes and be arranged on panel
Battery main switch K0, the double-pole single throw K12 of button switch AN, the first double-pole single throw K1~the 12nd, A phase primary sides
Wire connection terminal AP1 and the wire connection terminal BP1 of AP2, the B phase primary side and wire connection terminal CP1 and CP2 of BP2, C phase primary side, two
The two of Same Name of Ends wire connection terminal 6S1, the A-C phase of the Same Name of Ends wire connection terminal 1S1~six group coil of first group of coil of secondary side
The indicator light D1 of common port wire connection terminal AS2, BS2 and CS2 of 6 groups of coils of secondary side, the first indicator light D1~the 12nd, two-way pendulum
Dynamic milliammeter A, further includes the first DC power supply DC1, the second DC power supply DC2 being arranged on inside detection case.
The first DC power supply DC1, battery main switch K0,3 power supply branches composition one of button switch AN and A-C phase
Secondary side power supply circuit, the battery main switch K0 are double-pole single throw, and the structure of 3 power supply branches of the A-C phases is identical,
Wherein A phases power branch route A phase primary sides wire connection terminal AP1 and AP2 and the first double-pole single throw K1 composition, the A
The wire connection terminal AP1 and AP2 of phase primary side are Same Name of Ends；The wire connection terminal AP1 of the A phases primary side is opened through the first double-pole single-throw (D.P.S.T.)
Close the contact 4 of K1 and contact 2 meets the contact N of button switch AN, the contact M of button switch AN is meeting the first DC power supply DC1 just
Pole, contact 2 and contact 4 of the wire connection terminal AP2 through battery main switch K0 of the A phases primary side connect the first DC power supply DC1's
Anode；
The 6 of the Same Name of Ends wire connection terminal of 6 groups of coils of the secondary side of the A-C phases and corresponding double-pole single throw composition
A Same Name of Ends wire connection terminal branch, A-C phases secondary side 6 groups of coils common port wire connection terminal AS2, BS2, CS2 respectively and
3 common port wire connection terminal branches of corresponding double-pole single throw composition and the milliammeter A composition secondary sides of bidirectional swinging
Polarity detection circuit, the structure of 6 Same Name of Ends wire connection terminal branch is identical, wherein the first Same Name of Ends wire connection terminal branch is route
Same Name of Ends wire connection terminal 1S1 and the 4th double-pole single throw the K4 composition of first group of coil, the Same Name of Ends of first group of coil
Contact 4 and contact 2 of the wire connection terminal 1S1 through the 4th double-pole single throw K4 connect the positive terminal of the milliammeter A of bidirectional swinging；
The structure of 3 common ports wire connection terminal branch is identical, wherein A phases public terminated line terminal branch by A phases secondary side
Common port wire connection terminal AS2 and the tenth double-pole single throw K10 compositions, the common port wire connection terminal AS2 of the secondary side of the A phases
Contact 4 and contact 2 through the tenth double-pole single throw K10 connect the negative terminals of the milliammeter A of bidirectional swinging.
The primary side power supply circuit and secondary side polarity detection circuit further include indicator light circuit, primary side power supply electricity
The indicator light circuit on road is identical with the indicator light circuit structure of secondary side polarity detection circuit, wherein the finger of primary side power supply circuit
Indication lamp circuit is made of 3 indicator light branches of the second DC power supply DC2, battery main switch K0 and A-C phase；The 3 of the A-C phases
A indicator light branch structure is identical, and wherein A phases indicator light branch route the first indicator light D1 and the first double-pole single throw K1 compositions；
The contact 3 and contact 1 of one end the first double-pole single throw K1 of the first indicator light D1 is meeting the second DC power supply DC2 just
Pole, contact 1 and contact 3 of the other end through battery main switch K0 of the first indicator light D1 connect the anode of the second DC power supply DC2.
Prepare before detection：
The wire connection terminal AP1 of the primary side of A phase current mutual inductors is connected to the wire connection terminal of the utility model Same Name of Ends
The wire connection terminal AP2 of the primary side of AP1, A phase current mutual inductor is connected to the wire connection terminal AP2 of the utility model Same Name of Ends；B-C
The mode of connection of phase is identical.It is new that the Same Name of Ends wire connection terminal 1S1 of first group of coil of the secondary side of A-C phases is connected to this practicality
The Same Name of Ends wire connection terminal and the utility model of remaining five groups of coil of the secondary side of Same Name of Ends wire connection terminal 1S1, the A-C phase of type
Same Name of Ends wire connection terminal connection mode it is identical, correspond wiring.
Detecting step：
S1 starts shooting
Close battery main switch K0.
S2 is detected
The first siding ring of S201 detection A phase current mutual inductors and the polar relationship of second siding ring
It is bright to close the first double-pole single throw K1, the first indicator light D1；
The tenth double-pole single throw K10 is closed, the tenth indicator light D10 is bright；
The 4th double-pole single throw K4 is closed, the 4th indicator light D4 is bright, presses button switch AN, the milliammeter of bidirectional swinging
The pointer positive deflection of A, then wire connection terminal 1S1,1S2 wiring of the second siding ring of A phase current mutual inductors is correct, disconnects the 4th
Double-pole single throw K4, the 4th indicator light D4 go out；
Using above-mentioned detection mode, whether other wire connection terminals of the second siding ring of detection A phase current mutual inductors successively
Wiring is correct；
The tenth double-pole single throw K10 is disconnected, the tenth indicator light D10 goes out；
The first double-pole single throw K1 is disconnected, the first indicator light D1 goes out.
The first siding ring of S202 detection B phase current mutual inductors and the polar relationship of second siding ring
It is identical with the detection mode of A phase current mutual inductors.
The first siding ring of S203 detection C phase current mutual inductors and the polar relationship of second siding ring
It is identical with the detection mode of A phase current mutual inductors.
Claims (2)
- A kind of 1. device for supply line's threephase current transformer secondary circuit Check up polarity, it is characterised in that：Including three The primary side power supply circuit and secondary side polarity detection circuit of phase current mutual inductor；The primary side power supply circuit is by the first DC power supply DC1, battery main switch K0,3 of button switch AN and A-C phase confessions Electric branch composition, the battery main switch K0 is double-pole single throw, and the structure of 3 power supply branches of the A-C phases is identical, its Middle A phases power branch route A phase primary sides wire connection terminal AP1 and AP2 and the first double-pole single throw K1 composition, the A phases The wire connection terminal AP1 and AP2 of primary side are Same Name of Ends；The wire connection terminal AP1 of the A phases primary side is through the first double-pole single throw The contact 4 and contact 2 of K1 meet the contact N of button switch AN, and the contact M of button switch AN connects the cathode of the first DC power supply DC1, Contact 2 and contact 4 of the wire connection terminal AP2 of the A phases primary side through battery main switch K0 connect the negative of the first DC power supply DC1 Pole；The secondary side polarity detection circuit is by the Same Name of Ends wire connection terminal of 6 groups of coils of secondary side of A-C phases and corresponding double Monopole single throw switch composition 6 Same Name of Ends wire connection terminal branches, A-C phases secondary side 6 groups of coils common port wire connection terminal AS2, BS2, CS2 are respectively and 3 common port wire connection terminal branches of corresponding double-pole single throw composition and bidirectional swinging Milliammeter A is formed, and the structure of 6 Same Name of Ends wire connection terminal branch is identical, wherein the first Same Name of Ends wire connection terminal branch is route Same Name of Ends wire connection terminal 1S1 and the 4th double-pole single throw the K4 composition of first group of coil, the Same Name of Ends of first group of coil Contact 4 and contact 2 of the wire connection terminal 1S1 through the 4th double-pole single throw K4 connect the positive terminal of the milliammeter A of bidirectional swinging； The structure of 3 common ports wire connection terminal branch is identical, wherein A phases public terminated line terminal branch by A phases secondary side Common port wire connection terminal AS2 and the tenth double-pole single throw K10 compositions, the common port wire connection terminal AS2 of the secondary side of the A phases Contact 4 and contact 2 through the tenth double-pole single throw K10 connect the negative terminals of the milliammeter A of bidirectional swinging.
- A kind of 2. dress for supply line's threephase current transformer secondary circuit Check up polarity according to claim 1 Put, it is characterised in that：The primary side power supply circuit and secondary side polarity detection circuit further include indicator light circuit, primary side The indicator light circuit of power supply circuit is identical with the indicator light circuit structure of secondary side polarity detection circuit, wherein primary side power supply electricity The indicator light circuit on road is made of 3 indicator light branches of the second DC power supply DC2, battery main switch K0 and A-C phase；The A- 3 indicator light branch structures of C phases are identical, and wherein A phases indicator light branch route the first indicator light D1 and the first double-pole single throw K1 is formed；The contact 3 and contact 1 of one end the first double-pole single throw K1 of the first indicator light D1 connects the second DC power supply The cathode of DC2, contact 1 and contact 3 of the other end through battery main switch K0 of the first indicator light D1 connect the second DC power supply DC2's Anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721088083.XU CN207336738U (en) | 2017-08-29 | 2017-08-29 | A kind of device for supply line's threephase current transformer secondary circuit Check up polarity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721088083.XU CN207336738U (en) | 2017-08-29 | 2017-08-29 | A kind of device for supply line's threephase current transformer secondary circuit Check up polarity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207336738U true CN207336738U (en) | 2018-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721088083.XU Withdrawn - After Issue CN207336738U (en) | 2017-08-29 | 2017-08-29 | A kind of device for supply line's threephase current transformer secondary circuit Check up polarity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207336738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505585A (en) * | 2017-08-29 | 2017-12-22 | 国家电网公司 | A kind of device for supply line's threephase current transformer secondary circuit Check up polarity |
-
2017
- 2017-08-29 CN CN201721088083.XU patent/CN207336738U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505585A (en) * | 2017-08-29 | 2017-12-22 | 国家电网公司 | A kind of device for supply line's threephase current transformer secondary circuit Check up polarity |
| CN107505585B (en) * | 2017-08-29 | 2024-02-06 | 国家电网公司 | Device for detecting polarity of secondary loop of three-phase current transformer of power supply line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180508 Effective date of abandoning: 20240206 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180508 Effective date of abandoning: 20240206 |