CN215415640U - Primary phase checking device for short-circuit line - Google Patents
Primary phase checking device for short-circuit line Download PDFInfo
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- CN215415640U CN215415640U CN202122136850.2U CN202122136850U CN215415640U CN 215415640 U CN215415640 U CN 215415640U CN 202122136850 U CN202122136850 U CN 202122136850U CN 215415640 U CN215415640 U CN 215415640U
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- 230000006698 induction Effects 0.000 abstract description 4
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- 238000010586 diagram Methods 0.000 description 4
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Abstract
The utility model discloses a primary nuclear phase device for a short-circuit line, which relates to the technical field of power equipment maintenance and comprises the following components: a main board and a sub-board; the main board is provided with an insulation resistance meter, a main board three-phase connection insulation resistance meter terminal, a main board three-phase connection line side terminal, a main board three-phase grounding side terminal and a main board three-phase split disconnecting link switch, wherein the main board three-phase grounding side terminal is grounded, the main board three-phase connection line side terminal is connected with a static contact of the main board three-phase split disconnecting link switch, and the main board three-phase connection insulation resistance meter terminal is a movable contact of the main board three-phase split disconnecting link switch; the auxiliary plate is provided with an auxiliary plate three-phase wiring circuit side terminal, an auxiliary plate three-phase short-end terminal, an auxiliary plate three-phase grounding side terminal and an auxiliary plate three-phase split disconnecting link switch; the main board three-phase wiring line side terminal is connected with the auxiliary board three-phase wiring line side terminal through a three-phase lead; and carrying out phase checking through the insulation resistance test wiring structure. The utility model reduces the risk of induction electric shock during working, simplifies the test process and improves the test working efficiency.
Description
Technical Field
The utility model relates to the technical field of electric power equipment maintenance, in particular to a short-circuit normal line primary phase checking device. The phase checking device is mainly used for checking the working requirements of phases of an overhead power line and a cable line at one time.
Background
The aim is that along with the development of an electric power system and the improvement of the living standard of people, the requirements of power consumers on the quality of electric energy and the reliability of power supply are gradually improved, and particularly for important power customers, a power grid is required to continuously provide high-quality electric energy service for the power consumers. And for a new commissioning transformer substation, the rapid, safe and reliable commissioning is the most important way for obtaining economic and social benefits.
For the input operation of the power transmission line of the power supply network, the phase sequence is checked and determined to be input, and the method is very important for the input operation of a power supply company on a newly-built substation, and the input operation of the substation is covered by wide coverage and related range, such as the total length of a 220 kV line in an existing Alletai power supply company network is 1127.963 kilometers, the total length of a 110 kV substation line is 2111.368 kilometers, the total length of a 35 kV line is 2578.712 kilometers, and the total length of a 10 kV line is 7736.136 kilometers. Through investigation, the new 220 kV line 20, 110 kV line 68, 35 kV line 100 and 10 kV line 235 which are newly and newly switched in 2020 can be known. The method is particularly important along with one-time phase checking of a commissioning line of a newly-built transformer substation, is an important test of a newly-commissioned transmission line and a power system, and is a prerequisite condition that the transformer substation can be normally commissioned and the line is prevented from tripping due to correct line phase sequence. The existing primary nuclear phase uses the earth as a conductor, one end of a line is grounded, and the other two phases are suspended. And (4) carrying out a line insulation test (an insulation resistance table L is connected with a line section, and an insulation resistance table E is connected with the ground) at the other end of the line, and checking the line phase sequence.
The existing primary nuclear phase method is single, a great induction electric shock risk exists in the nuclear phase test process, numerous persons are required to cooperate when the nuclear phase test is carried out, the persons in cooperation need to know a complex test flow, and the nuclear phase operation process is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that aiming at the defects in the prior art, discloses a short-circuit normal line primary phase checking device which is convenient to quickly, safely and reliably ensure that the phase sequences of substations on two sides of a newly-launched overhead power line and a cable line are the same and the newly-launched overhead power line can be put into operation as soon as possible.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
short circuit normal line is nuclear phase device once, includes: a main board and a sub-board;
the main board is provided with an insulation resistance meter, a main board three-phase connection insulation resistance meter terminal, a main board three-phase connection line side terminal, a main board three-phase grounding side terminal and a main board three-phase split disconnecting link switch, wherein the main board three-phase grounding side terminal is grounded, the main board three-phase connection line side terminal is connected with a static contact of the main board three-phase split disconnecting link switch, and the main board three-phase connection insulation resistance meter terminal is a movable contact of the main board three-phase split disconnecting link switch;
the auxiliary board is provided with an auxiliary board three-phase wiring line side terminal, an auxiliary board three-phase short-end terminal, an auxiliary board three-phase grounding side terminal and an auxiliary board three-phase split disconnecting link switch, the auxiliary board three-phase short-end terminal is in short circuit through a short circuit, the main board three-phase grounding side terminal is grounded, a static contact of the auxiliary board three-phase split disconnecting link switch is connected with the auxiliary board three-phase short-end terminal, and a static contact of the auxiliary board three-phase split disconnecting link switch is the auxiliary board three-phase wiring line side terminal;
the main board three-phase wiring line side terminal is connected with the auxiliary board three-phase wiring line side terminal through a three-phase lead; and carrying out phase checking through the insulation resistance test wiring structure.
According to a further technical scheme of the utility model, the phase sequence of the three-phase grounding wire side terminal of the auxiliary plate is a standard phase sequence, and the phase sequence of the three-phase grounding wire side terminal of the main plate is a phase sequence to be checked.
The main board and the auxiliary board are insulating boards.
As a further technical solution of the present invention, the insulation resistance test wiring structure is: the L and E ends of the insulation ohmmeter are connected with two-phase terminals in ABC phases of the main board three-phase connection insulation ohmmeter terminals, the two-phase terminals are used as main board three-phase split disconnecting link switches of the moving contacts to be closed, and the two-phase terminals corresponding to the main board three-phase split disconnecting link switches on the auxiliary board are used as auxiliary board three-phase split disconnecting link switches of the moving contacts to be closed.
According to a further technical scheme of the utility model, two ends of the three-phase lead are provided with wire clamps.
As a further technical solution of the present invention, when the checking phase sequence of the insulation resistance test connection structure is the same, the insulation resistance in the insulation resistance meter is 0.
Compared with the prior art, the utility model has the following advantages:
1. the main board and the auxiliary board are insulating boards, so that the portable electric toothbrush is convenient to carry and the use safety is improved.
2. The wire clamps are arranged at the two ends of the three-phase wire, so that the test is convenient, and the operation is convenient and simple.
3. The utility model is provided in the process of one-time nuclear phase of the circuit, reduces the risk of induction electric shock during working, reduces testing personnel, simplifies the testing process and improves the testing working efficiency.
4. When the utility model is used for field test, the potential safety hazard problem does not exist, the main board and the auxiliary board are convenient to carry, light and simple, the use and the operation are simple, the practical application is wide, the working efficiency is greatly improved, and the line operation quality is improved.
Drawings
FIG. 1 is a diagram of a primary phase-checking device for a short-circuit normal line according to the present invention;
FIG. 2 is a wiring diagram of a primary phase-checking device of the short-circuit normal line provided by the utility model;
FIG. 3 is a block diagram of another embodiment of the present invention;
shown in the figure:
1-main board, 2-auxiliary board;
11-insulation ohmmeter, 12-main board three-phase connection insulation ohmmeter terminal, 13-main board three-phase connection line side terminal, 14-main board three-phase grounding side terminal, 15-main board three-phase split knife switch;
21-auxiliary plate three-phase wiring line side terminal, 22-auxiliary plate three-phase short-end terminal, 23-auxiliary plate three-phase grounding side terminal and 24-auxiliary plate three-phase split knife switch.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
Referring to fig. 1 to 2, in which, fig. 1 is a structural diagram of a short-circuit normal line primary phase checking device provided by the present invention; FIG. 2 is a top view of a primary phase-checking device for a short-circuit normal line according to the present invention;
as shown in fig. 1 and 2, the short-circuit normal line primary phase-checking device includes:
a main board 1 and a sub-board 2;
the main board 1 is provided with an insulation resistance meter 11, a main board three-phase connection insulation resistance meter terminal 12, a main board three-phase connection line side terminal 13, a main board three-phase grounding side terminal 14 and a main board three-phase split knife switch 15, the main board three-phase grounding side terminal 14 is grounded, the main board three-phase connection line side terminal 13 is connected with a static contact of the main board three-phase split knife switch 15, and the main board three-phase connection insulation resistance meter terminal 12 is a movable contact of the main board three-phase split knife switch 15;
the auxiliary plate 2 is provided with an auxiliary plate three-phase wiring line side terminal 21, an auxiliary plate three-phase short-end terminal 22, an auxiliary plate three-phase grounding side terminal 23 and an auxiliary plate three-phase split disconnecting link switch 24, the auxiliary plate three-phase short-end terminal 22 is in short circuit through a short circuit, the auxiliary plate three-phase grounding side terminal 23 is grounded, a static contact of the auxiliary plate three-phase split disconnecting link switch 24 is connected with the auxiliary plate three-phase short-end terminal 22, and a static contact of the auxiliary plate three-phase split disconnecting link switch 24 is the auxiliary plate three-phase wiring line side terminal 21;
the main board three-phase wiring line side terminal 13 is connected to the sub-board three-phase wiring line side terminal 21 through the three-phase lead 3; and carrying out phase checking through the insulation resistance test wiring structure.
Further, the phase sequence of the sub-board three-phase ground line-side terminal 21 is a standard phase sequence, and the phase sequence of the main board three-phase ground line-side terminal 13 is a phase sequence to be checked.
In the embodiment of the utility model, the main board 1 and the auxiliary board 2 are insulating boards, so that the portable multifunctional electric water heater is convenient to carry and safe to use.
Wherein, insulation resistance test wiring structure does: the L and E ends of the insulation ohmmeter are connected with the two-phase terminals in the ABC phase of the main board three-phase connection insulation ohmmeter terminal 12, the main board three-phase split knife switch 15 with the two-phase terminals as the moving contacts is closed, and the auxiliary board three-phase split knife switch 24 with the two-phase terminals corresponding to the auxiliary board as the moving contacts is closed.
In order to facilitate the test, the wire clamps are arranged at the two ends of the three-phase lead 3, when the nuclear phase test is carried out, the test can be carried out only by clamping the wire clamps on the corresponding terminals, and the operation is convenient and simple.
The phase sequence checked by the insulation resistance test wiring structure is the same, the insulation resistance in the insulation resistance meter 11 is 0, namely when the indication or display in the insulation resistance meter is 0, the phase sequence to be tested is the same as the standard phase sequence of the connection.
According to the embodiment of the utility model, wiring is carried out according to the figure 1 before primary phase checking of the circuit, two conductors are used as conductive loops when the phase sequence of the circuit is checked, two conductors at one end of the circuit are in short circuit connection and three-phase short circuit connection is grounded, wherein the sequence of the short circuit end is determined, and the circuit insulation test is carried out at the other end of the circuit, namely, a wiring terminal of a three-phase insulation resistance meter of a mainboard is used as an insulation test end which is an opposite phase sequence checking end.
The specific operation process of the utility model is as follows:
a, disconnecting the line grounding switches at two ends of the line and taking down the line grounding wires, firstly, carrying out line insulation test on all three-phase lines, closing all the disconnecting links of the main board three-phase disconnecting link switch and the auxiliary board three-phase disconnecting link switch on the grounding side before the test, and then carrying out wiring according to the figure 1.
b, two wires in the circuit in the auxiliary board are short-circuited by two phases of the three-phase disconnecting switch of the auxiliary board, and the other wire is closed to the grounding side.
And c, an insulation resistance meter L on the mainboard is connected with one phase of the short-circuited conducting wire, and an insulation resistance meter E is connected with the other phase of the short-circuited conducting wire. Insulation resistance testing was then performed and insulation resistance should be 0 (check A, B phase shown in fig. 2) to determine its A, B phase.
d, after confirming A, B phases, all the three-phase disconnecting switches of the main board are closed to the ground, and the steps b and c are repeated (checking B, C is shown in figure 3) to confirm B, C phases.
e, after the operation is finished, all the disconnecting links at the two ends of the test device are closed to the grounding end, and the line grounding switch and the line grounding wire at the two ends of the line are recovered.
The short-circuit normal line primary phase checking device provided by the utility model has the advantages that in the primary phase checking process of the line, the risk of induction electric shock during working is reduced, the number of testers is reduced, the test process is simplified, and the test working efficiency is improved. And (4) carrying out a line insulation test at the other end of the line (the insulation resistance meter L is connected with one phase of the conducting wire, and the insulation resistance meter E is connected with the other phase of the conducting wire), and checking the phase sequence of the line.
When the utility model is used for field test, the potential safety hazard problem does not exist, the main board and the auxiliary board are convenient to carry, light and simple, the use and the operation are simple, the practical application is wide, the working efficiency is greatly improved, and the line operation quality is improved.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. Short circuit normal line nuclear phase device once, its characterized in that includes: a main board and a sub-board;
the main board is provided with an insulation resistance meter, a main board three-phase connection insulation resistance meter terminal, a main board three-phase connection line side terminal, a main board three-phase grounding side terminal and a main board three-phase split disconnecting link switch, wherein the main board three-phase grounding side terminal is grounded, the main board three-phase connection line side terminal is connected with a static contact of the main board three-phase split disconnecting link switch, and the main board three-phase connection insulation resistance meter terminal is a movable contact of the main board three-phase split disconnecting link switch;
the auxiliary board is provided with an auxiliary board three-phase wiring line side terminal, an auxiliary board three-phase short-end terminal, an auxiliary board three-phase grounding side terminal and an auxiliary board three-phase split disconnecting link switch, the auxiliary board three-phase short-end terminal is in short circuit through a short circuit, the main board three-phase grounding side terminal is grounded, a static contact of the auxiliary board three-phase split disconnecting link switch is connected with the auxiliary board three-phase short-end terminal, and a static contact of the auxiliary board three-phase split disconnecting link switch is the auxiliary board three-phase wiring line side terminal;
the main board three-phase wiring line side terminal is connected with the auxiliary board three-phase wiring line side terminal through a three-phase lead; and carrying out phase checking through the insulation resistance test wiring structure.
2. The shorted normal line primary phase-checking device according to claim 1, wherein the phase sequence of the sub-board three-phase ground line-side terminal is a standard phase sequence, and the phase sequence of the main board three-phase ground line-side terminal is a phase sequence to be checked.
3. A short normal line primary nuclear phase apparatus as claimed in claim 1, wherein the primary and secondary boards are insulating boards.
4. The short-circuit normal line primary nuclear phase device according to claim 1, wherein the insulation resistance test wiring structure is: the L and E ends of the insulation ohmmeter are connected with two-phase terminals in ABC phases of the main board three-phase connection insulation ohmmeter terminals, the two-phase terminals are used as main board three-phase split disconnecting link switches of the moving contacts to be closed, and the two-phase terminals corresponding to the main board three-phase split disconnecting link switches on the auxiliary board are used as auxiliary board three-phase split disconnecting link switches of the moving contacts to be closed.
5. The primary phase-checking device for the short-circuited normal line according to claim 1, wherein two ends of the three-phase lead are provided with wire clamps.
6. The primary phase checking device for the short-circuit normal line circuit according to claim 1, wherein the insulation resistance test wiring structure checks that the phase sequences are the same, and the insulation resistance in the insulation resistance meter is 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122136850.2U CN215415640U (en) | 2021-09-06 | 2021-09-06 | Primary phase checking device for short-circuit line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122136850.2U CN215415640U (en) | 2021-09-06 | 2021-09-06 | Primary phase checking device for short-circuit line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215415640U true CN215415640U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122136850.2U Active CN215415640U (en) | 2021-09-06 | 2021-09-06 | Primary phase checking device for short-circuit line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215415640U (en) |
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2021
- 2021-09-06 CN CN202122136850.2U patent/CN215415640U/en active Active
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