CN212229000U - A wiring switching device for transformer power failure test - Google Patents
A wiring switching device for transformer power failure test Download PDFInfo
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- CN212229000U CN212229000U CN202020895554.3U CN202020895554U CN212229000U CN 212229000 U CN212229000 U CN 212229000U CN 202020895554 U CN202020895554 U CN 202020895554U CN 212229000 U CN212229000 U CN 212229000U
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Abstract
A wiring switching device for a transformer power failure test comprises a transformer direct-current resistance tester, a transformer transformation ratio tester and a transformer on-load tap-changer tester, wherein the wiring switching device comprises an insulating shell and a test wire switching box, one end of the test wire switching box is electrically connected with an external circuit to be tested, and the other end of the test wire switching box is electrically connected with the tester; a plurality of groups of electric connecting wires are arranged in the test wire transfer box, each group of electric connecting wires comprises A-phase, B-phase, C-phase and N-phase electric connecting wires, each group of electric connecting wires is respectively provided with an external terminal and an internal terminal which are electrically connected with an external circuit to be tested and a test instrument, the external terminal comprises a high-voltage test wire connecting terminal and a low-voltage test wire connecting terminal, and the internal terminal comprises a direct resistance test wire connecting terminal, a transformation ratio test wire connecting terminal and a load test wire connecting terminal; the utility model discloses draw transformer height, low pressure wiring to ground, test the wiring on ground to reduce the power failure test time, reduce the wiring error rate.
Description
Technical Field
The utility model belongs to the technical field of the transformer, concretely relates to a wiring switching device for transformer power failure test.
Background
The transformer has the function of converting voltage, namely, the voltage boosting function or the voltage reducing function is realized, but the property of the voltage is not changed, alternating current generated by power plant power generation needs to be transmitted to a user through a power transmission line, firstly, the voltage is boosted by the boosting transformer and transmitted to the user side through the power transmission line (the loss of electricity in the transmission process can be reduced by high voltage), and then, the voltage is reduced to the voltage required by the user by the voltage reducing transformer, so that the position of the transformer in the whole power grid is reflected. After the transformer operates for a period of time, the insulation performance of the transformer is reduced due to factors such as bad weather and equipment aging, internal devices are damaged or changed in quality, and accidents occur in the operation of the transformer, which usually cause serious consequences, not only equipment is damaged, but also line tripping and power supply interruption are caused, and social life order and production activities are seriously influenced, so that a great deal of loss is caused. In order to prevent accidents during the operation of the transformer, periodic power failure tests must be performed on the transformer so as to find potential defects in the transformer in time. Therefore, the power failure test is an important means for preventing transformer accidents and has important significance for safe operation of a power system.
In the prior art, when a transformer power failure test operation is performed, due to the fact that power failure time is urgent, a plurality of transformer power failure test operation items are provided, for example, the following problems generally exist when the direct current resistance of a winding and a sleeve is measured, the transformation ratio of all taps and the wiring group of a transformer are checked, the direct current leakage current of the winding and the sleeve is measured, and the like: (1) the transformer is climbed up and down once by a tester every time the tester performs a test, the line connection between the measuring instrument and the structure to be measured is performed according to the performance to be measured, and the test measurement is performed by the measuring instrument after the line connection is completed, so that the test operation of the whole transformer is long in time; (2) in the whole process of a test, safety equipment such as safety helmets, safety belts and the like are worn, and people can frequently climb up and down a transformer and climb a high-voltage insulating sleeve to connect wires under the conditions of outdoor severe cold and severe summer, so that abnormal states are inevitable to appear, and inestimable damage is caused; (3) the transformer type is many, and the transformer top condition is complicated, has high low voltage insulation support, and iron core, folder insulation support's drawing forth etc. because experimental kind is many, and experimental work load is big, causes the testman mood impatience probably to appear connecing wrong line, brings artificial destruction to the transformer.
SUMMERY OF THE UTILITY MODEL
In view of this, for solving above-mentioned prior art not enough, the utility model provides a wiring switching device for transformer power failure test draws transformer high, low pressure wiring to ground, tests the wiring subaerially to reduce the power failure test time, alleviate experimenter's work load, reduce the wiring error rate, adapt to the needs of the on-the-spot actual work of electric power system.
In order to achieve the above object, the utility model adopts the following technical scheme:
a wiring switching device for a transformer power failure test comprises a transformer direct-current resistance tester, a transformer transformation ratio tester and a transformer on-load tap-changer tester, wherein the wiring switching device comprises an insulating shell and a test wire switching box, one end of the test wire switching box is electrically connected with an external circuit to be tested, and the other end of the test wire switching box is electrically connected with the tester;
be equipped with the multiunit electricity connecting wire in the test wire transfer box, every group the electricity connecting wire all includes A looks electricity connecting wire, B looks electricity connecting wire, C looks electricity connecting wire and N looks electricity connecting wire, every group be equipped with on the electricity connecting wire with external terminal that the circuit electricity is connected that awaits measuring and with the internal terminal that the test instrument electricity is connected, external terminal includes high voltage test wire binding post and low voltage test wire binding post, the internal terminal includes direct resistance test wire binding post, transformation ratio test wire binding post and has a test wire binding post.
Furthermore, a control panel is arranged on the test wire transfer box, and a disconnecting link 1, a disconnecting link 2 and a disconnecting link 3 are arranged on the control panel.
Further, the transformer direct-current resistance tester is connected with the direct-current resistance test wire connecting terminal through a direct-current resistance test wire, the transformer transformation ratio tester is connected with the transformation ratio test wire connecting terminal through a transformation ratio test wire, and the transformer on-load tap-changer tester is connected with the on-load test wire connecting terminal through an on-load test wire.
Further, the direct resistance test line binding post is connected with high voltage test line binding post and low voltage test line binding post respectively through switch 1, the transformation ratio test line binding post is connected with high voltage test line binding post and low voltage test line binding post respectively through switch 2, it is connected with high voltage test line binding post and low voltage test line binding post respectively to have the test line binding post of carrying through switch 3.
Furthermore, the high-voltage test wire connecting terminal is electrically connected with the high-voltage side of the transformer, and the low-voltage test wire connecting terminal is electrically connected with the low-voltage side of the transformer.
The utility model has the advantages that:
the device is used for carrying out a transformer power failure test, an external circuit to be tested is completely connected with an external terminal of a test wire transfer box at one time through a plurality of test connecting wires, then the internal terminal of the test wire transfer box is respectively connected with a corresponding test instrument according to the performance to be tested, so that the test of various performances in the transformer power failure test operation process is realized, the workload of a tester can be reduced, and the wiring error rate is reduced;
two, high voltage test personnel only need the tester transformer from top to bottom once at whole experimental operation in-process, and no longer do every time experimental, all need transformer from top to bottom once, reduce the power failure test time on the one hand, greatly reduced the time and the work load of transformer test operation, on the other hand avoids frequent transformer from top to bottom, scrambles high-voltage insulation sleeve and connects a wire, can guarantee tester's personal safety to the work efficiency of transformer power failure test operation has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a diagram of the internal wiring of the wiring transition device;
fig. 2 is a field wiring diagram of a transformer power failure test using the wiring switching device.
Detailed Description
The following provides specific embodiments, which will further clearly, completely and specifically explain the technical solutions of the present invention. The present embodiment is the best embodiment based on the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
A wiring switching device for a transformer power failure test is disclosed, as shown in figure 1, a testing instrument for the transformer power failure test comprises a transformer direct-current resistance tester, a transformer transformation ratio tester and a transformer on-load tap changer tester, the wiring switching device comprises an insulating shell and a test wire switching box, a control panel is arranged on the test wire switching box, a disconnecting link 1, a disconnecting link 2 and a disconnecting link 3 are arranged on the control panel, one end of the test wire switching box is electrically connected with an external circuit to be tested, and the other end of the test wire switching box is electrically connected with the testing instrument;
the test wire transfer box is internally provided with a plurality of groups of electric connecting wires, each group of electric connecting wires comprises an A-phase electric connecting wire, a B-phase electric connecting wire, a C-phase electric connecting wire and an N-phase electric connecting wire, each group of electric connecting wires is provided with an external terminal electrically connected with the external circuit to be tested and an internal terminal electrically connected with the test instrument, the external terminal comprises a high-voltage test wire connecting terminal and a low-voltage test wire connecting terminal, and the internal terminal comprises a direct resistance test wire connecting terminal, a transformation ratio test wire connecting terminal and a load test wire connecting terminal;
the transformer direct-current resistance tester is connected with the direct-resistance test line wiring terminal through a direct-resistance test line, the transformer transformation ratio tester is connected with the transformation ratio test line wiring terminal through a transformation ratio test line, and the transformer on-load tap-changer tester is connected with the on-load test line wiring terminal through an on-load test line; the direct resistance test line connecting terminal is respectively connected with a high-voltage test line connecting terminal and a low-voltage test line connecting terminal through a disconnecting link 1, the transformation ratio test line connecting terminal is respectively connected with the high-voltage test line connecting terminal and the low-voltage test line connecting terminal through a disconnecting link 2, and the on-load test line connecting terminal is respectively connected with the high-voltage test line connecting terminal and the low-voltage test line connecting terminal through a disconnecting link 3; the high-voltage test wire connecting terminal is electrically connected with the high-voltage side of the transformer, and the low-voltage test wire connecting terminal is electrically connected with the low-voltage side of the transformer.
The device is used for carrying out the transformer power failure test, all external circuits to be tested are connected with the external terminals of the test wire transfer box at one time through a plurality of test connecting wires, then the internal terminals of the test wire transfer box are respectively connected with corresponding test instruments according to the performance to be tested, so that the test of various performances in the transformer power failure test operation process is realized, the workload of a tester can be reduced, and the wiring error rate is reduced; as shown in fig. 2, the procedure of the transformer power failure test using the connection adapter of the present application is as follows:
(1) connecting the test wire transfer box and the high-voltage side and the low-voltage side of the transformer by using high-voltage and low-voltage test wires;
(2) connecting a direct-current resistance tester of the transformer and a test wire transfer box by using a direct-current resistance test wire;
(3) connecting a transformer transformation ratio tester and a test line transfer box by using a transformation ratio test line;
(4) connecting a transformer on-load tap-changer tester and a test wire transfer box by using an on-load test wire;
(5) selecting different test instruments to perform a high-voltage test by operating corresponding disconnecting links on a control panel of the test wire transfer box;
(6) and after the test is finished, removing the relevant test line and recovering the site.
In the test process, the high-voltage test personnel only need the test personnel to go up and down the transformer once, and no longer do every time the experiment, all need the transformer to go up and down once, reduce the power failure test time on the one hand, greatly reduced the time and the work load of transformer test operation, on the other hand avoids frequent transformer, climbing high-voltage insulation sleeve to carry out the wiring, can guarantee test personnel's personal safety to the work efficiency of transformer power failure test operation has been improved.
The essential features, the basic principle and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that the present invention can be modified in various ways according to the actual situation without departing from the spirit and scope of the present invention, and these modifications and improvements are all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A wiring switching device for a transformer power failure test is characterized in that a testing instrument for the transformer power failure test comprises a transformer direct-current resistance tester, a transformer transformation ratio tester and a transformer on-load tap-changer tester, the wiring switching device comprises an insulating shell and a test wire switching box, one end of the test wire switching box is electrically connected with an external circuit to be tested, and the other end of the test wire switching box is electrically connected with the testing instrument;
be equipped with the multiunit electricity connecting wire in the test wire transfer box, every group the electricity connecting wire all includes A looks electricity connecting wire, B looks electricity connecting wire, C looks electricity connecting wire and N looks electricity connecting wire, every group be equipped with on the electricity connecting wire with external terminal that the circuit electricity is connected that awaits measuring and with the internal terminal that the test instrument electricity is connected, external terminal includes high voltage test wire binding post and low voltage test wire binding post, the internal terminal includes direct resistance test wire binding post, transformation ratio test wire binding post and has a test wire binding post.
2. The connection switching device for the transformer power failure test according to claim 1, wherein a control panel is arranged on the test line switching box, and a disconnecting link 1, a disconnecting link 2 and a disconnecting link 3 are arranged on the control panel.
3. The connection adapter device for the transformer power failure test according to claim 2, wherein the transformer dc resistance tester is connected to the dc resistance test line connection terminal through a dc resistance test line, the transformer transformation ratio tester is connected to the transformation ratio test line connection terminal through a transformation ratio test line, and the transformer on-load tap changer tester is connected to the on-load test line connection terminal through an on-load test line.
4. The connection adapter device for the power failure test of the transformer as claimed in claim 3, wherein the direct resistance test line terminal is connected to the high voltage test line terminal and the low voltage test line terminal through a switch 1, the transformation ratio test line terminal is connected to the high voltage test line terminal and the low voltage test line terminal through a switch 2, and the on-load test line terminal is connected to the high voltage test line terminal and the low voltage test line terminal through a switch 3.
5. The connection adapter device for the transformer power failure test is characterized in that the high-voltage test line terminal is electrically connected with the high-voltage side of the transformer, and the low-voltage test line terminal is electrically connected with the low-voltage side of the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020895554.3U CN212229000U (en) | 2020-05-25 | 2020-05-25 | A wiring switching device for transformer power failure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020895554.3U CN212229000U (en) | 2020-05-25 | 2020-05-25 | A wiring switching device for transformer power failure test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212229000U true CN212229000U (en) | 2020-12-25 |
Family
ID=73929232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020895554.3U Expired - Fee Related CN212229000U (en) | 2020-05-25 | 2020-05-25 | A wiring switching device for transformer power failure test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212229000U (en) |
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2020
- 2020-05-25 CN CN202020895554.3U patent/CN212229000U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201225 Termination date: 20210525 |