CN212872611U - Standard current transformer for high-voltage metering - Google Patents
Standard current transformer for high-voltage metering Download PDFInfo
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- CN212872611U CN212872611U CN202021081961.7U CN202021081961U CN212872611U CN 212872611 U CN212872611 U CN 212872611U CN 202021081961 U CN202021081961 U CN 202021081961U CN 212872611 U CN212872611 U CN 212872611U
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Abstract
The utility model discloses a standard current transformer is used in high pressure measurement, including high pressure voltage-sharing shield cover and low pressure voltage-sharing shield cover, the internal fixed surface of high pressure voltage-sharing shield cover is connected with current transformer primary winding, the left and right sides difference fixedly connected with current riser iron core and current transformer iron core of low pressure voltage-sharing shield cover medial surface. This current transformer for high-voltage metering, through with the current transformer secondary winding of rising current ware winding and current transformer on rising current ware iron core and current transformer iron core of wraparound respectively, be connected with low pressure voltage-sharing shield cover, realize the even of winding electrode magnetic field, and add on current transformer iron core and wind the compensation winding, realize error compensation, and make the input of rising current ware output as current transformer primary winding that rises current ware iron core and rising current ware winding constitution, improve the measurement accuracy under the high-voltage state, synthesize the accurate measurement that realizes under the high-voltage state, excellent in use effect.
Description
Technical Field
The utility model belongs to the technical field of integrated electric device, concretely relates to standard current transformer is used in high pressure measurement.
Background
The current transformer for high-voltage measurement is an integrated electric device, and a 10kv plug-in cable plug can be equipped during high-voltage measurement for detecting the error of the current transformer.
The existing current transformer for high-voltage metering is used, and a comparison method is adopted for detecting the proportional error of the high-voltage current transformer in China at present, so that the standard current transformer is required to be two levels higher than the detected current transformer, the error of the detected transformer can be read by a transformer calibrator, the current transformer used in both high-voltage and low-voltage states of the detected transformer can be subjected to error measurement in the low-voltage state, because the leakage current in the high-voltage operation and the low-voltage operation is different, the error caused by the two states is not negligible, the actual error in the high-voltage state can not be accurately measured by measuring the high-voltage current transformer in the low-voltage state, the measured data has errors, the measurement effect is poor, and the use effect is.
Disclosure of Invention
The utility model provides a not enough to prior art, the utility model provides a standard current transformer for high-pressure measurement possesses the advantage of accurate measurement under the high-pressure state, has solved the problem mentioned in the above-mentioned background art.
The utility model provides a following technical scheme: the utility model provides a standard current transformer for high pressure measurement, includes high pressure voltage-sharing shield cover and low pressure voltage-sharing shield cover, the internal surface fixedly connected with current transformer primary winding of high pressure voltage-sharing shield cover, the left and right sides of low pressure voltage-sharing shield cover medial surface fixedly connected with respectively rises a ware iron core and a current transformer iron core, the external fixation of rising a ware iron core has cup jointed and has risen a ware winding, the external fixation of current transformer iron core has current transformer secondary winding and compensation winding, high pressure voltage-sharing shield cover is located the top of low pressure voltage-sharing shield cover.
Furthermore, the fixed end of the compensation winding is connected with a compensation element, and the compensation element is a capacitor.
Furthermore, the right side of the low-voltage-sharing shielding cover is fixedly connected with a grounding terminal.
Furthermore, the insulation media of the primary winding of the current transformer, the compensation winding, the current booster winding and the secondary winding of the current transformer are all made of epoxy resin.
Has the advantages that:
this current transformer for high-voltage metering, through connecting primary winding at high-voltage-sharing shield cover, and will wind respectively and connect current-rising ware winding and the current transformer secondary winding that rises on current-rising ware iron core and the current transformer iron core, be connected with low-voltage-sharing shield cover, realize the even of winding electrode magnetic field, and add on current transformer iron core and wind compensation winding, realize error compensation, and make the input of current-rising ware output as current transformer primary winding that rises that current-rising ware iron core and current-rising ware winding are constituteed, improve the measurement accuracy under the high-voltage state, synthesize the accurate measurement under the realization high-voltage state, excellent in use effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a primary winding of a current transformer; 2. a high voltage grading shield; 3. a low voltage grading shield; 4. a compensation winding; 5. a current riser core; 6. a current riser winding; 7. a current transformer core; 8. a secondary winding of the current transformer; 9. a compensation element; 10. and a ground terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a standard current transformer for high voltage measurement comprises a high voltage equalizing shield 2 and a low voltage equalizing shield 3, wherein a primary winding 1 of the current transformer is fixedly connected to the inner surface of the high voltage equalizing shield 2, a current booster iron core 5 and a current transformer iron core 7 are fixedly connected to the left side and the right side of the inner side surface of the low voltage equalizing shield 3 respectively, a current booster winding 6 is fixedly sleeved on the outer surface of the current booster iron core 5, a secondary winding 8 of the current transformer and a compensation winding 4 are fixed on the outer surface of the current transformer iron core 7, and the high voltage equalizing shield 2 is located above the low voltage equalizing shield 3.
Wherein, the end fixedly connected with compensating element 9 of making of compensation winding 4, compensating element 9 are electric capacity, and concrete compensating element 9's right side fixedly connected with adjustable resistance utilizes compensating element 9 and adjustable resistance to realize the compensation effect, satisfies the error requirement.
Wherein, the right side fixedly connected with ground terminal 10 of low pressure voltage-sharing shield cover 3 utilizes ground terminal 10 ground connection, guarantees circuit safety.
The insulating medium of the primary winding 1, the compensation winding 4, the current booster winding 6 and the secondary winding 8 of the current transformer is made of epoxy resin, and the epoxy resin has a high-quality insulating effect, is high-temperature resistant, has a long service life, and meets the use requirement under high-voltage work.
The working principle is as follows: connect current transformer primary winding 1 on high voltage-sharing shield cover 2, and input high-pressure heavy current, with current transformer secondary winding 8, compensation winding 4 and current rising ware winding 6, respectively the wraparound connects on current transformer iron core 7 and current rising ware iron core 5, and make compensation winding 4 be connected with compensating element, and make current transformer secondary winding 8, current rising ware winding 6, compensation winding 4 and current rising ware iron core 5, connect low voltage-sharing shield cover 3 with current transformer iron core 7, and make low voltage-sharing shield cover 3 connect ground terminal 10.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a standard current transformer for high pressure measurement, includes high voltage-sharing shield cover (2) and low pressure voltage-sharing shield cover (3), its characterized in that: the inner surface of the high-voltage-sharing shielding case (2) is fixedly connected with a current transformer primary winding (1), the left side and the right side of the inner side surface of the low-voltage-sharing shielding case (3) are respectively and fixedly connected with a current-rising device iron core (5) and a current transformer iron core (7), the outer surface of the current-rising device iron core (5) is fixedly sleeved with a current-rising device winding (6), the outer surface of the current transformer iron core (7) is fixedly provided with a current transformer secondary winding (8) and a compensation winding (4), and the high-voltage-sharing shielding case (2) is positioned above the low-voltage-sharing.
2. The standard current transformer for high-voltage metering according to claim 1, wherein: the fixed connection of doing of compensation winding (4) has compensating element (9), compensating element (9) are electric capacity.
3. The standard current transformer for high-voltage metering according to claim 1, wherein: and the right side of the low-voltage-sharing shielding cover (3) is fixedly connected with a grounding terminal (10).
4. The standard current transformer for high-voltage metering according to claim 1, wherein: and the insulating media of the primary winding (1) of the current transformer, the compensation winding (4), the current booster winding (6) and the secondary winding (8) of the current transformer are all made of epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021081961.7U CN212872611U (en) | 2020-06-12 | 2020-06-12 | Standard current transformer for high-voltage metering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021081961.7U CN212872611U (en) | 2020-06-12 | 2020-06-12 | Standard current transformer for high-voltage metering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212872611U true CN212872611U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021081961.7U Active CN212872611U (en) | 2020-06-12 | 2020-06-12 | Standard current transformer for high-voltage metering |
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| CN (1) | CN212872611U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823495A (en) * | 2021-11-23 | 2021-12-21 | 武汉磐电科技股份有限公司 | Bi-linear package subassembly and high-voltage self-boost standard current transformer |
| CN118169448A (en) * | 2024-05-14 | 2024-06-11 | 中广电器股份有限公司 | Multifunctional current transformer capable of synchronously outputting current and voltage signals |
-
2020
- 2020-06-12 CN CN202021081961.7U patent/CN212872611U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823495A (en) * | 2021-11-23 | 2021-12-21 | 武汉磐电科技股份有限公司 | Bi-linear package subassembly and high-voltage self-boost standard current transformer |
| CN118169448A (en) * | 2024-05-14 | 2024-06-11 | 中广电器股份有限公司 | Multifunctional current transformer capable of synchronously outputting current and voltage signals |
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