CN209878856U - Capacitance voltage division induction type electronic voltage transformer - Google Patents
Capacitance voltage division induction type electronic voltage transformer Download PDFInfo
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- CN209878856U CN209878856U CN201920595515.9U CN201920595515U CN209878856U CN 209878856 U CN209878856 U CN 209878856U CN 201920595515 U CN201920595515 U CN 201920595515U CN 209878856 U CN209878856 U CN 209878856U
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- partial pressure
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Abstract
The utility model discloses an electric capacity partial pressure response type electronic voltage transformer, voltage transformer include insulating casing, electric capacity partial pressure module and circuit board, insulating casing's upper end is equipped with the high pressure and inserts the mouth, insulating casing's bottom is equipped with the low pressure delivery outlet, electric capacity partial pressure module and circuit board are all installed in insulating casing, the circuit board is connected with the high pressure access mouth, electric capacity partial pressure module is connected with the low pressure delivery outlet, and this device adopts the non-contact structure for direct contact does not take place for outside power end and the sense terminal of this device, has reduced the possibility that the device is punctured by the electric current, and this device structure is small and exquisite, can replace current heavy voltage sensor on the market, and low in cost has practiced thrift economic cost.
Description
Technical Field
The utility model relates to a technical voltage measures technical field, and concrete field is an electric capacity partial pressure response type electronic voltage transformer.
Background
The traditional high-voltage measurement mode is based on electromagnetic induction, and has a plurality of disadvantages in a high-voltage environment. Firstly, in order to adapt to the high-voltage insulation requirement, the device has large volume, heavy weight, inconvenient installation and use, complex insulation structure, easy occurrence of process defects and potential safety hazards. Meanwhile, due to the influences of nonlinearity, magnetic saturation benefit, magnetic leakage and the like of ferromagnetic materials, measurement errors are caused, even protection misoperation is caused, meanwhile, analog signals are easily interfered in long-distance transmission, meanwhile, a measurement system is composed of multiple stages, measurement precision is reduced, and the requirement of a traditional measurement device for realizing a modern digital power grid is also a barrier.
Because the traditional high-voltage measurement has many defects, along with the development of scientific technology, various non-traditional and electronic voltage measurement modes enter a scientific research and development stage, and the existing electronic sensing device can be divided into a voltage division type and an optical type. The voltage division measurement is generally two types of capacitance voltage division and resistance voltage division, and a voltage division device has potential safety hazard due to direct contact with a high-voltage charged body. The voltage dividing element is interfered by elements aging, temperature and other external factors, and has poor stability and interchangeability, and the commercialization is difficult to realize. The optical structure has problems of poor stability, poor interchangeability, etc. due to its complicated structure, and is expensive, and thus is difficult to be put into practical use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a capacitance partial pressure response type electronic voltage transformer to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: capacitance partial pressure response type electronic voltage transformer, voltage transformer include insulating casing, electric capacity partial pressure module and circuit board, insulating casing's upper end is equipped with the high pressure and inserts the mouth, insulating casing's bottom is equipped with the low pressure delivery outlet, electric capacity partial pressure module and circuit board are all installed in insulating casing, the circuit board is connected with the high pressure and is inserted the mouth, electric capacity partial pressure module is connected with the low pressure delivery outlet.
Preferably, the lower end of the insulating shell is provided with an insulating frame.
Preferably, the insulating housing is an epoxy housing.
Preferably, the circuit board is made of epoxy glass fiber.
Compared with the prior art, the beneficial effects of the utility model are that: capacitance partial pressure induction type electronic voltage transformer, this device adopt non-contact structure for direct contact does not take place for the sense terminal of outside power end and this device, has reduced the possibility that the device is punctured by the electric current, and this device structure is small and exquisite, can replace current heavy voltage sensor on the market, and low in cost has practiced thrift economic cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-an insulating shell, 2-a capacitance voltage division module, 3-a circuit board, 4-a high-voltage access port, 5-a low-voltage output port and 6-an insulating frame.
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, the present invention provides a technical solution: capacitance partial pressure induction type electronic voltage transformer, voltage transformer include insulating casing 1, capacitance partial pressure module 2 and circuit board 3, insulating casing's upper end is equipped with high-voltage access mouth 4, insulating casing's bottom is equipped with low pressure delivery outlet 5, capacitance partial pressure module and circuit board are all installed in insulating casing, the circuit board is connected with high-voltage access mouth, capacitance partial pressure module is connected with the low-voltage delivery outlet, according to the high-voltage electric field principle, in inhomogeneous electric field, the less conductor surface of curvature radius forms stronger electric field strength, under strong electric field's effect, can form the ionization in the place of conductor surface micron order, and the ionization produces: the 'migration current' reflects the electrified voltage of the conductor, and according to the high-voltage effect, the aim of measuring the high voltage in a non-contact way can be achieved, and in a non-uniform high-voltage electric field, the maximum electric field intensity is expressed as follows:
d, electrode distance v: applied voltage r: radius of electrode
After the high-voltage access port is connected with the power supply, the circuit board is electrified to generate ionization, the capacitance voltage dividing module senses the migration current generated by ionization, the capacitance voltage dividing module is connected with the low-voltage output port, the low-voltage output port is connected with an external voltage collector, so that the voltage of the capacitance voltage dividing module can be detected by the external voltage connector, and the detected value is multiplied by the voltage of the power supply which is accessed to the high-voltage access port in a certain proportion.
Particularly, insulating housing's lower extreme is installed insulating frame 6, and the insulating frame is convenient for install the utility model discloses.
Specifically, the insulating housing is an epoxy housing.
Specifically, the circuit board is made of epoxy glass fiber.
The working principle is as follows: the utility model discloses, external power source inserts to high-voltage connection entry, and outside check out test set inserts to the low pressure delivery outlet, and the surface produces the ionization when electrified inside circuit board, and electric capacity voltage division module can detect external power source's voltage after carrying out the partial pressure to the electric current that the ionization came out.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.
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. Capacitive voltage division induction type electronic voltage transformer, its characterized in that: the voltage transformer comprises an insulating shell (1), a capacitance voltage division module (2) and a circuit board (3), wherein a high-voltage access port (4) is formed in the upper end of the insulating shell (1), a low-voltage output port (5) is formed in the bottom end of the insulating shell (1), the capacitance voltage division module (2) and the circuit board (3) are installed in the insulating shell (1), the circuit board (3) is connected with the high-voltage access port (4), and the capacitance voltage division module (2) is connected with the low-voltage output port (5).
2. The capacitive voltage dividing inductive electronic voltage transformer of claim 1, wherein: and an insulating frame (6) is arranged at the lower end of the insulating shell (1).
3. The capacitive voltage dividing inductive electronic voltage transformer of claim 1, wherein: the insulating shell (1) is an epoxy resin shell.
4. The capacitive voltage dividing inductive electronic voltage transformer of claim 1, wherein: the circuit board (3) is made of epoxy glass fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920595515.9U CN209878856U (en) | 2019-04-28 | 2019-04-28 | Capacitance voltage division induction type electronic voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920595515.9U CN209878856U (en) | 2019-04-28 | 2019-04-28 | Capacitance voltage division induction type electronic voltage transformer |
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| Publication Number | Publication Date |
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| CN209878856U true CN209878856U (en) | 2019-12-31 |
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| CN201920595515.9U Active CN209878856U (en) | 2019-04-28 | 2019-04-28 | Capacitance voltage division induction type electronic voltage transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975593A (en) * | 2019-04-28 | 2019-07-05 | 浙江深华颖智能科技有限公司 | Capacitance partial pressure induction type electronic type voltage transformer |
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2019
- 2019-04-28 CN CN201920595515.9U patent/CN209878856U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975593A (en) * | 2019-04-28 | 2019-07-05 | 浙江深华颖智能科技有限公司 | Capacitance partial pressure induction type electronic type voltage transformer |
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