CN109342987B - Combined transformer verification device with boosting and boosting sources - Google Patents
Combined transformer verification device with boosting and boosting sources Download PDFInfo
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- CN109342987B CN109342987B CN201811476081.7A CN201811476081A CN109342987B CN 109342987 B CN109342987 B CN 109342987B CN 201811476081 A CN201811476081 A CN 201811476081A CN 109342987 B CN109342987 B CN 109342987B
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- 238000012795 verification Methods 0.000 title claims abstract description 22
- 238000004804 winding Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
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Abstract
The invention provides a combined transformer verification device with a boosting current source, which comprises a box body, wherein a single-phase standard current transformer, a single-phase boosting transformer and a single-phase standard voltage transformer are arranged in the box body, a primary wiring terminal and a switching device are arranged on the box body, and the box body is provided with a wiring board for wiring; the primary wire ends of the single-phase standard current transformer, the single-phase step-up transformer and the single-phase standard voltage transformer are connected with the primary wire connecting terminal; the secondary terminal of the single-phase standard current transformer, the single-phase step-up transformer and the single-phase standard voltage transformer is connected with the wiring board. The device combines three single-phase standard current transformers, three single-phase standard voltage transformers, three step-up transformers and three step-up transformers together, reduces occupation space, and is convenient to operate due to the fact that the wiring terminals and the wiring boards are arranged.
Description
Technical Field
The invention relates to the field of electric power, in particular to a verification device for a self-carrying boost current source for detecting a combined transformer.
Background
In the prior art, the known technology is that when the combined transformer is inspected at present, only one phase of current transformer is connected when detecting the current error, only one phase of voltage transformer is connected when detecting the voltage error, and the condition of the detection method is inconsistent with the condition that the three-phase current winding and the three-phase voltage winding are connected simultaneously when the combined transformer actually operates, so that the detection result of the single-phase method cannot accurately reflect the actual error condition of the combined transformer. If three phases are detected simultaneously, the current windings and the voltage windings of all phases are connected in, so that more wires are connected, the wiring time is long, the verification efficiency is seriously affected, and the production cost is increased. This is a disadvantage of the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a combined transformer calibration device with a boosting current source, which can be used as a three-phase voltage and current power frequency proportion standard.
The scheme is realized by the following technical measures: a combined transformer verification device with a boosting current source comprises a box body, wherein a single-phase standard current transformer, a single-phase boosting transformer and a single-phase standard voltage transformer are arranged in the box body, a primary wiring terminal and a switching device are arranged on the box body, and a wiring board for wiring is arranged in the box body; the primary wire ends of the single-phase standard current transformer, the single-phase step-up transformer and the single-phase standard voltage transformer are connected with the primary wire connecting terminal; the secondary terminal of the single-phase standard current transformer, the single-phase step-up transformer and the single-phase standard voltage transformer is connected with the wiring board. The single-phase standard current transformer and the single-phase step-up transformer are arranged in the box body, so that the combined transformer can be verified in terms of current, and the single-phase step-up transformer and the single-phase standard voltage transformer can be used for verifying the combined transformer in terms of voltage; the transformer and the transformer are arranged in the box body, so that the production and installation costs are reduced, the occupied space of equipment is reduced, and the box body is provided with the wiring terminals and the wiring boards, so that wiring is conducted during verification. The bottom of the box body is provided with a movable base, so that the whole device is convenient to move, and verification work is carried out.
The three single-phase standard current transformers are arranged, the three single-phase step-up transformers are arranged, the three single-phase standard voltage transformers are arranged, the twelve primary wiring terminals are arranged, two ends of a primary wire of each single-phase standard current transformer are respectively connected with two primary wiring terminals, the single-phase step-up transformers are in one-to-one correspondence with one single-phase standard current transformer, the corresponding single-phase step-up transformers share primary wires with the single-phase standard current transformers, the single-phase step-up transformers provide step-up sources for the single-phase standard current transformers, and the secondary wire wiring terminals of the single-phase standard current transformers and the secondary wire wiring terminals of the single-phase step-up transformers are arranged on the wiring board; the number of the mutual inductors and the number of the transformers are three, so that three phases can be checked at the same time, and errors caused by single-phase checking are avoided. The combined three-phase voltage and current power frequency proportion standard with the boost current source is arranged in the box body, and voltage and current error verification can be simultaneously carried out on the three-phase combined transformer.
The two ends of a primary wire of each single-phase standard voltage transformer are respectively connected with two primary wiring terminals, the single-phase step-up transformers are in one-to-one correspondence with the single-phase standard voltage transformers, the corresponding single-phase step-up transformers share the primary wire with the single-phase standard voltage transformers, the single-phase step-up transformers provide step-up sources for the single-phase standard voltage transformers, and the secondary wiring terminals of the single-phase standard voltage transformers and the secondary wiring terminals of the single-phase step-up transformers are arranged on the wiring board. The common primary wire is adopted, so that the wiring is convenient, and the verification is convenient.
The three single-phase standard current transformers are arranged in a finished product shape, the three single-phase step-up transformers are arranged in a finished product shape, the three single-phase standard voltage transformers are arranged in a finished product shape, the internal space is further compressed, and internal wiring is facilitated, and influences between current and voltage, between voltage and between current and current are reduced. All planes of the triangular shapes are arranged in parallel, so that interference is further avoided, and meanwhile, space is saved; the three single-phase standard current transformers and the three single-phase standard voltage transformers are respectively arranged on two sides of the box body, the single-phase step-up transformer is arranged between the single-phase standard current transformers and the single-phase standard voltage transformers, the single-phase step-up transformer is arranged between the single-phase step-up transformer and the single-phase standard current transformers, mutual interference is reduced, two wiring boards are arranged on one side, close to the three single-phase standard current transformers, of the box body, the second wiring board is arranged on one side, close to the three single-phase standard voltage transformers, of the box body, the secondary wiring terminals of the single-phase standard current transformers and the secondary wiring terminals of the single-phase step-up transformers are all arranged on the first wiring board, the wiring board is designed in such a way, wiring errors are avoided in the wiring process, and when verification is carried out, the working personnel are also convenient to conduct wiring.
The switching device comprises an actuating mechanism and a contact seat, wherein the actuating mechanism comprises a push rod motor with a push rod, the contact seat comprises an insulating rod and a contact for supplying power to a wiring terminal, the contact is matched with the wiring terminal, the contacts are fixedly connected through the insulating rod, and the push rod motor pushes the contact seat through the push rod. The push rod motor pushes the contact seat to realize connection of the contact and the binding post, so that verification is performed, after the verification is finished, the contact seat retreats under the action of the push rod, separation of the contact and the binding post is realized, in actual work, connection of the contact and the binding post can be set as required, and the three-phase line can be directly connected with the binding post in the binding post as required.
The primary winding of the single-phase standard current transformer is provided with a middle tap. The user can select different taps to measure according to different transformer transformation ratios, and the method is convenient for field use.
The single-phase standard voltage transformer and the single-phase step-up transformer are fixed on the flange by the corrosion resistant plate, the flange is fixed on the box, the voltage coil and the iron core of the single-phase step-up transformer are connected and fixed by the insulating cylinder, the corrosion resistant plate can be 0.5mm thick, thus being convenient for installation and fixation, reducing the volume and lightening the whole weight. The box body is filled with insulating medium between the single-phase standard current transformer, the single-phase step-up transformer, the single-phase standard voltage transformer and the single-phase step-up transformer, and the insulating medium is SF6, so that the whole weight can be reduced.
It can be seen that the present invention has outstanding substantial features and significant advances over the prior art, as well as the benefits of its implementation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a top view of the present device.
Fig. 3 is a side view of the present device.
FIG. 4 is a cross-sectional view of the device
In the figure, 1 is a primary wiring terminal, 2 is a box body, 3 is a single-phase standard current transformer, 4 is a single-phase current-raising transformer, 5 is a first wiring board, 6 is a push rod motor, 61 is a contact, 62 is an insulating rod, 63 is a push rod, 7 is a second wiring board, 8 is a single-phase voltage-raising transformer, 9 is a single-phase standard voltage transformer, 10 is a movable base, 11 is a stainless steel plate, and 12 is a flange.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is described below by means of a specific embodiment in combination with the accompanying drawings.
As can be seen from the drawings, the combined transformer verification device with the boost current source comprises a box body 2, wherein a single-phase standard current transformer 3, a single-phase boost current transformer 4, a single-phase boost current transformer 8 and a single-phase standard voltage transformer 9 are arranged in the box body 2, a primary wiring terminal 1 and a switching device are arranged on the box body 2, and the box body 2 is provided with a wiring board for wiring; the primary wire ends of the single-phase standard current transformer 3, the single-phase step-up transformer 4, the single-phase step-up transformer 8 and the single-phase standard voltage transformer 9 are connected with the primary wiring terminal 1; the secondary terminals of the single-phase standard current transformer 3, the single-phase step-up transformer 4, the single-phase step-up transformer 8 and the single-phase standard voltage transformer 9 are connected with a wiring board. Insulating medium is filled among the box body 2, the single-phase standard current transformer 3, the single-phase step-up transformer 4, the single-phase standard voltage transformer 9 and the single-phase step-up transformer 8, and the insulating medium is SF6. The bottom of the box body 2 is provided with a movable base 10, and a plurality of rollers are arranged on the bottom surface of the movable base 10, so that the whole checking device is convenient to move.
Three single-phase standard current transformers 3, three single-phase step-up transformers 4, three single-phase step-up transformers 8, three single-phase standard voltage transformers 9 and a combined cost device, namely a combined three-phase voltage and current power frequency proportion standard with a step-up current source, are used for verification, the number of primary wiring terminals 1 is twelve, the two ends of a primary wire of each single-phase standard current transformer 3 are respectively connected with two primary wiring terminals 1, the single-phase step-up transformers 4 are in one-to-one correspondence with one single-phase standard current transformer 3, the corresponding single-phase step-up transformers 4 and the single-phase standard current transformers 3 share a primary wire, and a secondary wire wiring terminal of the single-phase standard current transformer 3 and a secondary wire wiring terminal of the single-phase step-up transformer 4 are both arranged on a wiring board; the two ends of a primary wire of each single-phase standard voltage transformer 9 are respectively connected with two primary wiring terminals 1, the same primary wiring terminals are not used at the two ends of a primary wire of each single-phase standard voltage transformer 9 and the two ends of a primary wire of each single-phase standard current transformer 3, the single-phase step-up transformers 8 are in one-to-one correspondence with the single-phase standard voltage transformers 9, the corresponding single-phase step-up transformers 8 share primary wires with the single-phase standard voltage transformers 9, the secondary wiring terminals of the single-phase standard voltage transformers 9 and the secondary wiring terminals of the single-phase step-up transformers 8 are arranged on wiring boards, and the primary winding of each single-phase standard current transformer 3 is provided with a middle tap.
The three single-phase standard current transformers 3 are arranged in a finished product shape, the three single-phase step-up transformers 4 are arranged in a finished product shape, the step-up transformers are in one-to-one correspondence with the single-phase standard current transformers, the three single-phase step-up transformers 8 are arranged in a finished product shape, the three single-phase standard voltage transformers 9 are arranged in a finished product shape, the step-up transformers are in one-to-one correspondence with the standard voltage transformers, the single-phase standard current transformers 3 and the single-phase standard voltage transformers 9 are respectively arranged on two sides of the box body 2, the single-phase step-up transformers 8 are arranged between the single-phase standard current transformers 3 and the single-phase standard voltage transformers 9, and the single-phase step-up transformers 4 are arranged between the single-phase step-up transformers 8 and the single-phase standard current transformers 3. The plane of the three single-phase standard current transformers 3 arranged in a shape of a Chinese character 'pin' is parallel to the plane of the three single-phase step-up transformers 4, the plane of the three single-phase standard voltage transformers 8 is parallel to the plane of the three single-phase step-up transformers 9, and the plane of the three single-phase standard current transformers 3 is parallel to the plane of the three single-phase step-up transformers 8.
The two wiring boards are arranged, the first wiring board 5 is arranged on one side, close to the single-phase standard current transformer 3, of the box body 2, the second wiring board 7 is arranged on one side, close to the single-phase standard voltage transformer 9, of the box body 2, the secondary wiring terminals of the single-phase standard current transformer 3 and the secondary wiring terminals of the single-phase step-up transformer 4 are all arranged on the first wiring board 5, and the secondary wiring terminals of the single-phase standard voltage transformer 9 and the secondary wiring terminals of the single-phase step-up transformer 8 are all arranged on the second wiring board 7.
The switching device comprises an actuating mechanism and a contact seat, wherein the actuating mechanism comprises a push rod motor 6 with a push rod 63, the contact seat comprises an insulating rod 62 and contacts 61 for supplying power to the primary wiring terminal, the contacts 61 are matched with the primary wiring terminal 1, and the number of the contacts can be set according to actual use requirements, such as 3, 6, 9 and 12; the contacts 61 are fixedly connected through an insulating rod 62, and the push rod motor 6 pushes the contact seat through a push rod 63. The single-phase standard voltage transformer 9 and the single-phase step-up transformer 8 are fixed on a flange 12 by a stainless steel plate 11, the stainless steel plate 11 realizes the isolation of the single-phase step-up transformer 4 and the single-phase step-up transformer 8, the flange 12 is fixed on the box body 2, and a voltage coil and an iron core of the single-phase step-up transformer 8 are connected and fixed by an insulating cylinder.
The present invention is not limited to the above-described embodiments, and variations, modifications, additions, or substitutions within the spirit and scope of the present invention will be within the scope of the present invention by those of ordinary skill in the art.
Claims (6)
1. The utility model provides a from combination formula mutual-inductor verifying attachment of taking boost current source, includes box (2), characterized by: a single-phase standard current transformer (3), a single-phase step-up transformer (4), a single-phase step-up transformer (8) and a single-phase standard voltage transformer (9) are arranged in a box body (2), a primary wiring terminal (1) and a switching device are arranged on the box body (2), and a wiring board for wiring is arranged on the box body (2); the primary wire ends of the single-phase standard current transformer (3), the single-phase step-up transformer (4), the single-phase step-up transformer (8) and the single-phase standard voltage transformer (9) are connected with the primary wiring terminal (1); the secondary terminal of the single-phase standard current transformer (3), the single-phase step-up transformer (4), the single-phase step-up transformer (8) and the single-phase standard voltage transformer (9) is connected with a wiring board;
the switching device comprises an actuating mechanism and a contact seat, wherein the actuating mechanism comprises a push rod motor (6) with a push rod (63), the contact seat comprises an insulating rod (62) and contacts (61) for supplying power to the primary wiring terminal (1), the contacts (61) are matched with the primary wiring terminal (1), the contacts (61) are fixedly connected through the insulating rod (62), the push rod motor (6) pushes the contact seat through the push rod (63), and the number of the contacts (61) is set according to actual use requirements;
the three single-phase standard current transformers (3) are arranged, the three single-phase step-up transformers (4) are arranged, the three single-phase step-up transformers (8) are arranged, the three single-phase standard voltage transformers (9) are arranged, the twelve primary wiring terminals (1) are arranged, two ends of a primary wire of each single-phase standard current transformer (3) are respectively connected with the two primary wiring terminals (1), the single-phase step-up transformers (4) are in one-to-one correspondence with one single-phase standard current transformer (3), the corresponding single-phase step-up transformers (4) and the single-phase standard current transformers (3) share a primary wire, the single-phase step-up transformers provide step-up sources for the single-phase standard current transformers, and the secondary wire wiring terminals of the single-phase standard current transformers (3) and the secondary wire wiring terminals of the single-phase step-up transformers (4) are arranged on the wiring boards;
the two ends of a primary line of each single-phase standard voltage transformer (9) are respectively connected with two primary wiring terminals (1), the single-phase step-up transformers (8) are in one-to-one correspondence with the single-phase standard voltage transformers (9), the corresponding single-phase step-up transformers (8) share the primary line with the single-phase standard voltage transformers (9), the single-phase step-up transformers provide step-up sources for the single-phase standard voltage transformers, and a secondary line wiring terminal of the single-phase standard voltage transformers (9) and a secondary line wiring terminal of the single-phase step-up transformers (8) are both arranged on a wiring board;
the three single-phase standard current transformers (3) are arranged in a finished product shape, the three single-phase step-up transformers (4) are arranged in a finished product shape, the three single-phase step-up transformers (8) are arranged in a finished product shape, the three single-phase standard voltage transformers (9) are arranged in a finished product shape, the single-phase standard current transformers (3) and the single-phase standard voltage transformers (9) are respectively arranged at two sides of the box body (2), the single-phase step-up transformers (8) are arranged between the single-phase standard current transformers (3) and the single-phase standard voltage transformers (9), and the single-phase step-up transformers (4) are arranged between the single-phase step-up transformers (8) and the single-phase standard current transformers (3);
the push rod motor (6) pushes the contact seat to realize that the contact (61) is connected with the primary wiring terminal (1), verification is carried out, and after the verification is finished, the contact seat retreats under the action of the push rod to realize the separation of the contact (61) and the primary wiring terminal (1).
2. The combined transformer verification device with a boost current source according to claim 1, wherein: the utility model provides a terminal block, terminal block and single-phase step-up transformer (8) of single-phase standard current transformer, the terminal block be two, first terminal block (5) set up in the one side that is close to single-phase standard current transformer (3) of box (2), second terminal block (7) set up in the one side that is close to single-phase standard voltage transformer (9) of box, the secondary line binding post of single-phase standard current transformer (3) and the secondary line binding post of single-phase step-up transformer (4) all set up on first terminal block (5), the secondary line binding post of single-phase standard voltage transformer (9) and the secondary line binding post of single-phase step-up transformer (8) all set up on second terminal block (7).
3. The combined transformer verification device with a boost current source according to claim 1, wherein: the primary winding of the single-phase standard current transformer (3) is provided with a middle tap.
4. The combined transformer verification device with a boost current source according to claim 1, wherein: the single-phase standard voltage transformer (9) and the single-phase step-up transformer (8) are fixed on a flange (12) by a stainless steel plate (11), the flange (12) is fixed on the box body (2), and a voltage coil and an iron core of the single-phase step-up transformer (8) are connected and fixed by an insulating cylinder.
5. The combined transformer verification device with a boost current source according to claim 1, wherein: the box body (2), the single-phase standard current transformer (3), the single-phase step-up transformer (4), the single-phase standard voltage transformer (9) and the single-phase step-up transformer (8) are filled with insulating media, and the insulating media are SF6.
6. The combined transformer verification device with a boost current source according to claim 1, wherein: the bottom of the box body (2) is provided with a movable base (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811476081.7A CN109342987B (en) | 2018-12-04 | 2018-12-04 | Combined transformer verification device with boosting and boosting sources |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811476081.7A CN109342987B (en) | 2018-12-04 | 2018-12-04 | Combined transformer verification device with boosting and boosting sources |
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| Publication Number | Publication Date |
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| CN109342987A CN109342987A (en) | 2019-02-15 |
| CN109342987B true CN109342987B (en) | 2024-03-22 |
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| CN201811476081.7A Active CN109342987B (en) | 2018-12-04 | 2018-12-04 | Combined transformer verification device with boosting and boosting sources |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111693926A (en) * | 2020-07-20 | 2020-09-22 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Voltage transformer calibration system |
| CN114609573A (en) * | 2022-03-25 | 2022-06-10 | 山东泰开检测有限公司 | Inflatable armoured combined mutual inductor calibrating device |
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| CN108845284A (en) * | 2018-09-18 | 2018-11-20 | 国网四川省电力公司电力科学研究院 | A kind of three phase combined standard mutual inductor |
| CN209432993U (en) * | 2018-12-04 | 2019-09-24 | 山东泰开互感器有限公司 | A kind of combined instrument transformer calibration equipment in included boosting up-flow source |
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