CN214409220U - Excitation small current test system - Google Patents
Excitation small current test system Download PDFInfo
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- CN214409220U CN214409220U CN202022280956.5U CN202022280956U CN214409220U CN 214409220 U CN214409220 U CN 214409220U CN 202022280956 U CN202022280956 U CN 202022280956U CN 214409220 U CN214409220 U CN 214409220U
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Abstract
The utility model provides an excitation undercurrent test system, open, rectifier cabinet, the empty division of direct current including working power supply, undercurrent tester, voltage regulator, synchronous transformer, excitation regulator, interchange, the working power supply inserts the input of undercurrent tester, the output of undercurrent tester is the direct access to the lower mouthful of the alternating-current knife switch in excitation regulator's the rectifier cabinet all the way, and the empty division of direct current and the empty division of interchange insert respectively to undercurrent tester again, and another way connects to depressor, synchronous transformer in proper order, sends into the excitation regulator industrial computer through synchronous transformer again. The utility model discloses avoided adopting external 380V's working power supply, the power is easily obtained, and has reduced the input voltage level, has avoided too much equipment and electrical element, has avoided slide-wire rheostat to expose to electrocute and generate heat and cause the risk that personnel scalded, has improved experimental security, has reduced the work load of experimental preparation, has improved test efficiency and reliability, has alleviateed personnel working strength.
Description
Technical Field
The utility model belongs to the technical field of the excitation system, concretely relates to excitation undercurrent test system.
Background
In recent years, the power supply construction in China is suddenly and rapidly advanced, the single machine capacity of a generator set under construction is rapidly improved, the rated excitation voltage and the excitation current of a generator are increasingly large, the safety of an excitation system is more and more important, an excitation small current open-loop test system is mainly applied to an early static debugging test and a unit overhaul test, and an excitation system small current test is a very important test.
The conventional excitation system low current test method is to use an oscilloscope, a protection tester, a slide wire rheostat, a direct current voltage/current dual-purpose meter, a contact voltage regulator and a universal meter to carry out tests, for example, a test system which uses the voltage regulator to carry out low current tests with the patent number of 201620425530.5 has the technical characteristics that: the device comprises a voltage regulator, a synchronous transformer, a power rectifier, an excitation regulator, a rectifier anode side disconnecting link, a rectifier direct current side disconnecting link, a slide wire resistor and an oscilloscope; the primary side of the voltage regulator is connected with a power frequency voltage AC380V, the secondary side of the voltage regulator is connected with the power rectifier through a power cable and a knife switch on the anode side of the rectifier, the synchronous transformer is connected with the secondary side of the voltage regulator, the synchronous transformer is connected with the excitation regulator, the excitation regulator is connected with the power rectifier through a control cable, and the slide wire resistor is connected with the oscilloscope through a knife switch on the direct current side of the rectifier. The voltage regulator is supplied with power by an inherent 380V power supply in a factory, the connection between the anode of the rectifier and the secondary side of the excitation transformer is not required to be disassembled, the low-current test function of the excitation system is realized, and the voltage regulator has the characteristics of simple wiring, safety, reliability and the like. But the method still has certain defects, the preparation work is complicated, the wiring safety can not be well guaranteed, and in addition, the labor intensity of testers is higher; the excitation low-current test is generally carried out after the overhaul of a unit or the overhaul of a thyristor, the general test time is relatively urgent, the external 380V power supply, the scribing rheostat, the oscilloscope and the multimeter are omitted because a plurality of test components and the external 380V power supply are difficult to obtain, and further improvement is carried out for improving the safety, reliability and efficiency of the test.
Disclosure of Invention
The utility model provides an excitation undercurrent test system has improved field test's security, has improved test efficiency and reliability, has alleviateed personnel working strength.
The technical scheme of the utility model is that: the utility model provides an excitation undercurrent test system, includes that working power supply, undercurrent tester, voltage regulator, synchronous transformer, excitation regulator, interchange empty switch, rectifier cabinet, the empty switch of direct current, the working power supply inserts the input of undercurrent tester, the output of undercurrent tester is the direct access excitation regulator's rectifier cabinet's interchange knife switch end opening all the way, again through the empty switch of direct current and interchange respectively access to undercurrent tester, another way connects to depressor, synchronous transformer in proper order, sends into the excitation regulator industrial computer through synchronous transformer again.
Further, the working power supply is an AC220V working power supply.
Further, the small current tester is an FLZ/T2 type small current tester.
In the scheme, the voltage regulator is a Y/Y-0 type three-phase voltage regulator with adjustable voltage of 0-750V.
The scheme is further that the small current tester comprises a liquid crystal touch display, a power switch, an SD card slot, an alternating current voltage output terminal and a direct current sampling terminal (+ U, -U).
The utility model has the advantages that: the utility model avoids the adoption of an external 380V working power supply, the power supply is easy to obtain, the input voltage level is reduced, excessive equipment and electrical elements are avoided, the connection of an intermediate line is avoided, the risk of scalding of personnel caused by the exposed electric shock and heating of the slide wire rheostat is avoided, and the safety of the test is greatly improved; the utility model reduces the equipment and the electric elements, reduces the workload of test preparation, simplifies the on-site wiring, improves the test efficiency and reliability, and lightens the working intensity of personnel; the utility model provides a small current tester's design defect, avoided only using the test result reliability risk that small current tester brought, provide the scheme for this type of problem of power plant solution of the same kind.
Drawings
Fig. 1 is a schematic structural diagram of an excitation small current test system of the present invention;
wherein: 1. the device comprises a working power supply, 2, a small current tester, 3, a voltage regulator, 4, a synchronous transformer, 5, an excitation regulator, 6, an alternating current air switch, 7, a rectifier cabinet, 8 and a direct current air switch.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.
The utility model discloses a concrete implementation mode is: as shown in fig. 1, an excitation undercurrent test system, including working power supply 1, undercurrent tester 2, voltage regulator 3, synchronous transformer 4, excitation regulator 5, exchange empty 6, rectifier cabinet 7, the empty 8 that opens of direct current, working power supply 1 inserts the input of undercurrent tester 2, the output of undercurrent tester 2 is the AC knife switch end opening in the rectifier cabinet 7 of direct access excitation regulator 5 all the way, and another way connects to voltage regulator 3, synchronous transformer 4 in proper order, sends into the industrial computer of excitation regulator 5 through excitation regulator 5 again, the output of rectifier cabinet 7 is through the empty 8 and the empty 6 access to undercurrent tester 2 respectively that opens of alternating current of direct current.
Further, the working power supply 1 is an AC220V working power supply.
The utility model discloses further, undercurrent tester 2 is FLZ/T2 type undercurrent tester.
The utility model discloses further, voltage regulator 3 is 0-750V adjustable Y/Y-0 type three-phase voltage regulator.
The utility model discloses further, undercurrent tester 2 includes liquid crystal touch display, switch, SD card slot, alternating voltage output terminal, direct current sampling terminal (+ U, -U).
While the preferred embodiments of the present invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention by those skilled in the art without departing from the technical solution of the present invention.
Claims (5)
1. The utility model provides an excitation undercurrent test system, its characterized in that, is in including working power supply, undercurrent tester, voltage regulator, synchronous transformer, excitation regulator, exchange empty opening, rectifier cabinet, the empty opening of direct current, the working power supply inserts the input of undercurrent tester, the output of undercurrent tester is the mouth under the alternating-current knife switch in direct access excitation regulator's the rectifier cabinet all the way, again through the empty opening of direct current and exchange empty opening and insert respectively to the undercurrent tester, another way connects to the depressor, synchronous transformer in proper order, sends into the excitation regulator industrial computer through synchronous transformer again.
2. The field excitation small current test system as claimed in claim 1, wherein said operating power supply is an AC220V operating power supply.
3. The excitation small current test system of claim 1, wherein said small current tester is an FLZ/T2 type small current tester.
4. The excitation small current test system as claimed in claim 1, wherein said voltage regulator is a Y/Y-0 type three phase voltage regulator with adjustable voltage of 0-750V.
5. The excitation small current test system as claimed in claim 1, wherein said small current tester comprises a liquid crystal touch display, a power switch, an SD card slot, an ac voltage output terminal, and a dc sampling terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022280956.5U CN214409220U (en) | 2020-10-14 | 2020-10-14 | Excitation small current test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022280956.5U CN214409220U (en) | 2020-10-14 | 2020-10-14 | Excitation small current test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214409220U true CN214409220U (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022280956.5U Active CN214409220U (en) | 2020-10-14 | 2020-10-14 | Excitation small current test system |
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| CN (1) | CN214409220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4332593A1 (en) * | 2022-08-31 | 2024-03-06 | China Three Gorges Co., Ltd. | Excitation circuit, excitation small-current test method and electronic device |
-
2020
- 2020-10-14 CN CN202022280956.5U patent/CN214409220U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4332593A1 (en) * | 2022-08-31 | 2024-03-06 | China Three Gorges Co., Ltd. | Excitation circuit, excitation small-current test method and electronic device |
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