CN216285643U - Device for interphase instantaneous short circuit test - Google Patents
Device for interphase instantaneous short circuit test Download PDFInfo
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- CN216285643U CN216285643U CN202120661517.0U CN202120661517U CN216285643U CN 216285643 U CN216285643 U CN 216285643U CN 202120661517 U CN202120661517 U CN 202120661517U CN 216285643 U CN216285643 U CN 216285643U
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Abstract
The utility model discloses a device for an interphase instantaneous short circuit test, and belongs to the technical field of high-voltage alternating-current transmission tests. The utility model comprises the following steps: the iron drill rod is connected with one end of the insulating rope, fixes the insulating rope and tensions the insulating rope to enable the insulating rope to be in a tensioned state before the test; the other end of the insulating rope is connected with a short-circuit arc-leading line, and the insulating rope is changed into a disconnected state from a tensioned state before a test during the test; the pendulum bob is connected to the joint of the insulating rope and the short circuit arc striking wire, and swings downwards when the insulating rope is in a disconnected state; and the other end of the short-circuit leading arc line is fixedly connected with one middle part of the first test circuit, and during testing, the pendulum bob is pulled to the second test circuit to form an interphase instantaneous short circuit between the first test circuit and the second test circuit. The utility model can realize the interphase instantaneous short circuit test of the circuit.
Description
Technical Field
The utility model relates to the technical field of high-voltage alternating-current transmission tests, in particular to a device for an interphase instantaneous short-circuit test.
Background
The alternating-current line phase-to-phase instantaneous grounding short-circuit test is used for checking the function of a control protection system in a power transmission line, can effectively test whether the short-circuit protection action of the control protection system is correct after the power transmission line has a short-circuit fault, and has important significance for verifying whether a power system can run safely.
At present, the instantaneous short circuit test of the alternating current transmission line mainly comprises single-phase, interphase and three-phase instantaneous short circuit tests, wherein, the three-phase instantaneous short circuit test is mainly realized by additionally arranging a circuit breaker, the operation is more complex, the test cost is higher, the single-phase instantaneous ground short circuit test is mainly realized by projecting a metal arc-leading line connected with the ground onto an electrified power transmission line through a spring power launching device such as a crossbow and a spring cannon, a fuel power launching device such as a projecting gun or a flying instrument such as an unmanned aerial vehicle, so that the line forms a ground short circuit, and generates larger short circuit current after short circuit, the thinner metal arc striking wire is instantly gasified by the current heat effect to realize the instant short circuit of the circuit to the ground, the existing commonly used interphase short circuit testing method uses the means of utilizing the launching device to throw the arc striking line in the single-phase instantaneous ground short circuit for reference, and the arc striking line is lapped to the two-phase line to form the interphase instantaneous short circuit. In addition, a test auxiliary device and a vertical wire are arranged on the power transmission line, and then an arc striking wire connected with a grounding component is driven to be close to the vertical wire through a traction insulating rope and a suspension insulating rope, so that the vertical wire discharges to the arc striking wire, and the short circuit test method of the power transmission line at different intervals is realized.
However, the above-mentioned interphase instantaneous short circuit test methods for the alternating-current transmission line are limited to the horizontally-arranged transmission line, and cannot be applied to the vertically-arranged transmission line. Therefore, an interphase transient short circuit test device suitable for the vertically-arranged power transmission line needs to be researched.
Disclosure of Invention
In order to solve the above problems, the present invention provides an apparatus for an interphase transient short-circuit test, comprising:
the iron drill rod is connected with one end of the insulating rope, fixes the insulating rope and tensions the insulating rope to enable the insulating rope to be in a tensioned state before the test;
the other end of the insulating rope is connected with a short-circuit arc-leading line, and the insulating rope is changed into a disconnected state from a tensioned state before a test during the test;
the pendulum bob is connected to the joint of the insulating rope and the short circuit arc striking wire, and swings downwards when the insulating rope is in a disconnected state;
and the other end of the short-circuit leading arc line is fixedly connected with one middle part of the first test circuit, and during testing, the pendulum bob is pulled to the second test circuit to form an interphase instantaneous short circuit between the first test circuit and the second test circuit.
Optionally, the short-circuit arc guiding line is fixedly connected, specifically, the short-circuit arc guiding line is wound and fastened on the first test line.
Optionally, the test parts of the first test circuit and the second test circuit are protected by aluminum clad tapes, and the lengths of the aluminum clad tapes are 0.5-1 m.
Optionally, the pendulum is a rubber or metal weight weighing 0.5-1 kg.
Optionally, the drill rod is inserted into the ground.
Optionally, the short-circuit arc-leading line is a plurality of copper stranded wires with the diameter of 1-3 mm.
The utility model can realize the interphase instantaneous short circuit test of the circuit.
Drawings
FIG. 1 is a block diagram of the apparatus of the present invention;
in fig. 1, 1 is a first test circuit and a second test circuit, 2 is a short circuit arc striking wire, 3 is an insulating rope, 4 is a pendulum bob, and 5 is an iron chisel.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the utility model. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The utility model provides a device for an interphase transient short circuit test, as shown in figure 1, which is characterized by comprising the following components:
the iron drill rod is connected with one end of the insulating rope, fixes the insulating rope and tensions the insulating rope to enable the insulating rope to be in a tensioned state before the test;
the other end of the insulating rope is connected with a short-circuit arc-leading line, and the insulating rope is changed into a disconnected state from a tensioned state before a test during the test;
the pendulum bob is connected to the joint of the insulating rope and the short circuit arc striking wire, and swings downwards when the insulating rope is in a disconnected state;
and the other end of the short-circuit leading arc line is fixedly connected with one middle part of the first test circuit, and during testing, the pendulum bob is pulled to the second test circuit to form an interphase instantaneous short circuit between the first test circuit and the second test circuit.
Wherein, the fixed connection, specifically, twine the short circuit arc guide and tie up on first test circuit.
The test parts of the first test circuit and the second test circuit are protected by aluminum wrapping tapes, and the length of each aluminum wrapping tape is 0.5-1 m.
Wherein the pendulum is a rubber or metal weight weighing 0.5-1 kg.
Wherein the iron chisel is inserted into the ground.
Wherein, the short circuit arc-leading line is a plurality of strands of copper stranded wires with the diameter of 1-3 mm.
The utility model is further illustrated by the following examples:
as shown in fig. 1, before the test, under the state that the transmission line is not electrified, one end of a short-circuit arc leading line 2 is fixed on a middle phase line in a three-phase transmission line 1, the other end of the short-circuit arc leading line is connected with an insulating rope 3, the other end of the insulating rope 3 is fixed on the ground through an iron rod 5, and a pendulum bob 4 is fixed at the joint of the arc leading line 2 and the insulating rope 3.
Connecting the other end of an arc striking wire 2 connected with a test circuit with an insulating rope 3, fixing the other end of the insulating rope 3 on the ground by using an iron chisel 5, keeping the insulating rope 3 and the arc striking wire 2 in a tensioned state, and simultaneously locating on a plane vertical to the plane of the test circuit 1, and in addition, keeping the shortest distance L between the arc striking wire 2 and a power transmission line of the lowest phase of the test circuit 1 to be larger than the safe clear distance between different electrified parts under the voltage level, and fixing a pendulum bob 4 at the connection position of the insulating rope 3 and the arc striking wire 2;
during testing, one side of the insulating rope 3, which is close to the ground, is cut off, so that the pendulum bob 4 loses traction force and swings downwards, the leading arc line 2 is pulled to be close to a test line below, and finally the leading arc line 2 is lapped on the two test lines, and the line-to-line instantaneous short circuit is realized.
The utility model can drive the arc-leading line 2 to stably bridge two test lines by means of the swinging and traction of the pendulum bob 4, on one hand, the arc-leading line 2 has shorter length, only needs to be slightly larger than the line phase distance, and has smaller action amplitude, thereby greatly reducing the possibility that the arc-leading line 2 contacts with another line in the three-phase power transmission line 1 and peripheral equipment, and reducing the safety risk of the test.
And need not to select spacious test place, reduced the purchase degree of difficulty and the test point selection degree of difficulty of test device component part, easy operation is convenient, can effectively reduce the professional requirement to testing personnel to and reduce testing personnel's quantity.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (6)
1. An apparatus for testing an interphase transient short circuit, the apparatus comprising:
the iron drill rod is connected with one end of the insulating rope, fixes the insulating rope and tensions the insulating rope to enable the insulating rope to be in a tensioned state before the test;
the other end of the insulating rope is connected with a short-circuit arc-leading line, and the insulating rope is changed into a disconnected state from a tensioned state before a test during the test;
the pendulum bob is connected to the joint of the insulating rope and the short circuit arc striking wire, and swings downwards when the insulating rope is in a disconnected state;
and the other end of the short-circuit leading arc line is fixedly connected with one middle part of the first test circuit, and during testing, the pendulum bob is pulled to the second test circuit to form an interphase instantaneous short circuit between the first test circuit and the second test circuit.
2. The device according to claim 1, characterized in that the fixed connection, in particular the winding and tightening of the short-circuit arc lead, is on the first test line.
3. The apparatus of claim 1, wherein the test portions of the first and second test lines are protected with aluminum tape having a length of 0.5-1 m.
4. The apparatus of claim 1, wherein the pendulum is a rubber or metal weight weighing 0.5-1 kg.
5. The apparatus of claim 1, wherein the drill rod is inserted into the ground.
6. The device of claim 1, wherein the short-circuit arc leader is a plurality of copper strands having a diameter of 1-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120661517.0U CN216285643U (en) | 2021-03-31 | 2021-03-31 | Device for interphase instantaneous short circuit test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120661517.0U CN216285643U (en) | 2021-03-31 | 2021-03-31 | Device for interphase instantaneous short circuit test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216285643U true CN216285643U (en) | 2022-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120661517.0U Active CN216285643U (en) | 2021-03-31 | 2021-03-31 | Device for interphase instantaneous short circuit test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216285643U (en) |
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2021
- 2021-03-31 CN CN202120661517.0U patent/CN216285643U/en active Active
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