KR101079823B1 - Transformer for protecting from thunderbolt and electromagnetic noise using metal-tape with directional magnetic pole of molecular magnet - Google Patents

Abstract

PURPOSE: A transformer for preventing lightning and noise by a metal tape is provided to attenuate an induction electromagnetic field induced in a winding for a transformer by orthogonally arranging the molecular magnetic direction of a core and the molecular magnetic direction of the metal tape. CONSTITUTION: A metal tape primary winding(200) is wound around a core(100) for a transformer. The metal tape primary winding is formed by winding the metal tape with a directional molecular magnetic pole around a primary winding. A metal tape secondary winding(300) is wound around the core for the transformer. The metal tape secondary winding is formed by winding the metal tape with the directional molecular magnetic pole around a secondary winding. A metal tape shielding winding is inserted into the core for the transformer and connects the metal tape to the ground.

Description

Transformer for protection from thunderbolt and electromagnetic noise using metal-tape with directional magnetic pole of molecular magnet}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer. More specifically, the present invention relates to a transformer for preventing lightning and noise using a metal tape having a directional molecular pole, which attenuates the induced electromagnetic field induced by the winding of the transformer. It is about. Here, the molecular pole refers to the magnetic pole of the molecular magnet (Molecular Magnet).

Lightning strikes occur when the atmosphere is charged by rapid air current fluctuations and temperature changes, and then discharges between clouds with low potential or to the ground. Specifically, the lightning discharge that occurs between the negative and positive charges accumulated and accumulated inside the cloud as cumulonimbus develops is called lightning. Among these lightnings, the discharge phenomenon in the cloud is called cloud discharge, and it is induced to the negative charge and ground at the bottom of the cloud. The discharge generated between the positive charges is called lightning strike.

Due to the impact of heat, vibration and magnetic field due to such lightning, the transformer may be damaged.

1 is a view for explaining the principle of the general transformer and the effect of lightning.

Referring to FIG. 1, in a general transformer 10, a primary winding n1 and a secondary winding n2 are wound around a stratified core, and when a current flows through the primary winding, the primary side core is formed by a current flowing in the primary winding. Magnetic flux occurs, and this magnetic flux links the secondary winding through the core. At this time, in the core inside the secondary winding, the magnetic flux is generated in a direction that prevents the change of the magnetic flux by the primary winding, and the electromotive force is generated in the secondary winding by the magnetic flux so that a current flows.

At this time, the generated current disappears after a while, which explains that the current is induced only when there is a change in the magnitude of the magnetic field by the primary winding. In order to generate a continuous current in the secondary winding, 1 AC should be flown to the secondary winding.

On the other hand, the secondary voltage relative to the primary voltage is proportional to the number of turns. That is, a relationship of (v1 / v2) = (n1 / n2) is established, and this is called a transformer ratio.

These transformers are divided into single-phase and three-phase transformers according to the constant of the power source, and there are inner type, outer iron type, and iron core type depending on the structure of the core core. In addition, there is a single winding transformer that uses the primary and secondary jointly with one winding, which is used as a home voltage regulator because the efficiency is high when the voltage ratio is stepped up and down within a range of less than 2.

As described above, in the case of a general transformer, a change in the current flowing through the primary winding is provided by winding a coil wound by overlapping the primary winding and the secondary winding in two layers in a core composed of a steel sheet of silicon steel sheet. As a result, a voltage induced in which a magnetic field is induced in the secondary winding is used.

Since the transformer is wound by winding the secondary winding on the primary winding, a large current of the primary winding is introduced, or an electromagnetic field induction to the inflow of lightning surge current or the like has been a problem. For example, when a lightning strike occurs near the transformer 10, an induced magnetic field is generated by the lightning strike, and a loop current is generated inside the transformer 10 by the induced magnetic field. Accordingly, the transformer 10 may be damaged by the circulating current.

On the other hand, in order to attenuate the induced magnetic field, a copper plate is generally inserted between the primary and secondary windings and connected to a grounded wire. However, in this case, the upper part of the winding that is not covered by the copper plate is used. There is a problem that electromagnetic field induction still occurs. In particular, in the case of a copper plate, there is a limit to shielding a magnetic field as a paramagnetic body.

1) Republic of Korea Patent Publication No. 2007-0074059 (published: July 12, 2007), the title of the invention: "magnetic core and inductor, transformer comprising the same" 2) Republic of Korea Patent No. 10-1039147 (filed December 31, 2010), the title of the invention: "insulation paper protection device of the transformer" 3) Republic of Korea Patent No. 10-0300139 (filed date: April 19, 2000), the title of the invention: "water substation device" 4) Republic of Korea Patent No. 10-0345649 (filed date: November 19, 1999), the title of the invention: "ground-mounted integrated water substation equipment" 5) Republic of Korea Patent No. 10-0952126 (application date: November 24, 2009), the title of the invention: "distribution line grounding device"

The technical problem to be solved by the present invention for solving the above-described problems is, by arranging the direction of the molecular pole of the core and the direction of the molecular pole of the iron tape orthogonal to each other, the directionality, which can attenuate the induced electromagnetic field induced in the winding of the transformer An object of the present invention is to provide a transformer for preventing lightning and noise using an iron tape having a molecular pole.

Another object of the present invention is to provide a transformer for lightning and noise prevention using an iron tape having a directional molecular pole capable of electrostatic shielding the transformer by grounding the iron tape having a directional molecular pole with one pole.

As a means for achieving the above technical problem, a transformer for preventing lightning and noise using an iron tape having a directional molecular pole according to the present invention is a transformer for attenuating an induced magnetic field generated by lightning and noise. Core; An iron tape winding primary coil wound around the transformer core and formed by winding an iron tape having a directional molecular pole in the primary winding; An iron tape-wound secondary winding wound around the transformer core and formed by winding an iron tape having a directional molecular pole in the secondary winding; And an iron tape shield winding inserted into the core and connecting the iron tape to ground, respectively, wherein the iron tape having the directional molecular pole is a magnetic tape, the molecular pole of the iron tape and the core. Molecular poles of the are arranged so as to cross each other at orthogonal or inclined plane to shield the induced magnetic field due to mutual magnetic field cancellation.

Here, the iron tape-wound primary winding and the iron tape-wound secondary winding may shield the induced electromagnetic field by a double shielding structure which is located in a space separated from each other and shielded.

Here, the iron tape is a metallic iron tape grounded by the iron tape shield winding, and may shield an electric field (electrostatic shielding).

Here, the iron tape having the directional molecular pole, the first insulating tape; Second insulating tape; And a directional steel sheet inserted between the first insulating tape and the second insulating tape such that both surfaces thereof are insulated by the first insulating tape and the second insulating tape.

Here, the iron tape having the directional molecular pole is a vertical tape in which the tape advancing direction is perpendicular to the tape width, a horizontal tape in which the tape advancing direction is horizontal to the tape width, or the tape advancing direction is predetermined for the tape width. It may be an inclined tape having a slope.

Here, the iron tape may be wound separately from the primary winding and the secondary winding, respectively, and may be used in combination of at least two of the iron tape winding primary winding and the iron tape winding secondary winding.

According to the present invention, by arranging the direction of the molecular pole of the core and the direction of the molecular pole of the iron tape to be perpendicular to each other, it is possible to attenuate the induced electromagnetic field induced in the winding of the transformer.

According to the present invention, the electric field of the transformer can be shielded (electrostatic shielding) by grounding the iron tape having the directional molecular poles to one pole.

1 is a view for explaining the principle of the general transformer and the impact of lightning.
2 is a view showing a lightning and noise preventing transformer using an iron tape having a directional molecular pole according to an embodiment of the present invention.
3 is a diagram illustrating the winding of an iron tape having a directional molecular pole in a winding.
4 is a cross-sectional view of a transformer for lightning and noise prevention using iron tape having a directional molecular pole according to an embodiment of the present invention.
5 is a view showing the type of iron tape having a directional molecular pole according to an embodiment of the present invention.
6A and 6B are views for explaining a case where a magnetic field is applied to a molecular magnet.
7A and 7B are diagrams for explaining the case where a magnetic field is applied to an iron tape having a directional molecular pole.
8 is a view for explaining a case where a magnetic field is applied to the directional molecular magnetic iron plate.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

2 is a view showing a lightning and noise prevention transformer using an iron tape having a directional molecular pole according to an embodiment of the present invention, Figure 3 is a diagram illustrating the winding of the iron tape having a directional molecular pole in the winding.

2 and 3, the lightning and noise prevention transformer using the iron tape having a directional molecular pole according to an embodiment of the present invention, the core 100, iron tape-wound primary winding 200 and iron tape A winding secondary winding 300, wherein the iron tape winding secondary winding 300 is wound on an iron tape 320 on a secondary winding 310, and likewise, the iron tape winding In the primary winding 200, iron tape is wound on the primary winding.

In the transformer for preventing lightning and noise using an iron tape having a directional molecular pole according to an embodiment of the present invention, the primary winding and the secondary winding are respectively wound to shield an induction electromagnetic field, and then the completed primary and secondary windings are completed. The outer side of the winding is once again wound using iron tape having directional molecular poles insulated on both sides, and two or more iron tape shield windings 330 which are grounded again are respectively formed in the core core 100. It is a transformer formed by insertion.

The core 100 used in the transformer according to the embodiment of the present invention may be a magnetic powder core, that is, a core made of powdered metal alloy having magnetic properties or a core including ferrite. The core 100 is a metal material having a high permeability, and means a metal provided inside the winding in which the wire is wound to help form magnetic flux density or magnetic field.

As shown in FIG. 3, the iron tape-wound primary winding 200 is iron tape wound on the primary winding, and the iron tape-wound secondary winding 300 is iron on the secondary winding 310. The tape 320 is wound up. In this case, the iron tape 320 is a tape having a directional molecular pole, and has a structure in which the oriented steel sheet 321 is inserted into a double-sided insulating tape composed of the first insulating tape 322 and the second insulating tape 323. The directional steel sheet 321 is connected to the iron tape shield winding 330. In this case, two or more iron tape shields 330 may be inserted into the iron core core 100.

In addition, the iron tape-wound primary winding 200 is connected to the primary side leader line 201, and the iron tape-wound secondary winding 300 is connected to the secondary side leader line, respectively.

The iron tape 320 should be orthogonal to the direction of the molecular pole of the silicon steel sheet of the transformer, and have a slight inclination for correcting a slope that will be generated due to the process of winding the iron tape 320. It may be a tape having a molecular pole direction of the direction.

The iron tape 320 is a direction orthogonal to the normal current flowing in the primary winding and the secondary winding, and does not affect the primary and secondary windings, but the magnetic field caused by the current other than the normal current is the iron tape ( It is shielded and attenuated by 320, and eventually, the impact on the secondary winding 310 can be drastically reduced.

In addition, since the iron tape 320 is a grounded metallic iron tape, an electrostatic shielding effect is generated, and since the two windings located in separate spaces are shielded in a double shielded structure, respectively, an induction electromagnetic field is generated. It can be shielded easily.

According to the embodiment of the present invention, by arranging the direction of the molecular pole of the core and the direction of the molecular pole of the iron tape to be perpendicular to each other, it is possible to attenuate the induced electromagnetic field induced in the winding of the transformer. In addition, the transformer can be electrostatically shielded by grounding the iron tape having the directional molecular poles to one pole.

On the other hand, Figure 4 is a cross-sectional view of a transformer for lightning and noise using an iron tape having a directional molecular pole according to an embodiment of the present invention.

Referring to FIG. 4, in the transformer for preventing lightning and noise using an iron tape having a directional molecular pole according to an embodiment of the present invention, each of the at least two windings constituting the transformer is an iron tape winding primary winding 200. And in the manufacture of the iron tape-wound secondary winding 300, after winding each of the primary winding and the secondary winding separately, and the outer side of the primary winding and the secondary winding the iron tape primary winding and 2 It is completed by winding in the orthogonal direction of the magnetic field generated by the secondary winding or in the orthogonal direction of the molecular pole direction of the core.

As a result, the iron tape in the magnetic field orthogonal direction does not respond to the magnetic field generated by the currents in the primary and secondary windings, but magnetic fields of components other than the magnetic field caused by the normal current can be attenuated by the molecular poles in the core orthogonal direction. have. In other words, the iron tape is wound on the primary winding and the secondary winding in a direction perpendicular to the molecular pole of the core for the transformer, and the iron tape is insulated on both sides thereof. Iron tapes can be used as finishing sheaths on the outer winding sheaths of the transformer primary and secondary windings.

In this case, the iron tape is wound separately and wound on the primary winding and the secondary winding, respectively, and may also constitute a transformer by combining two or more primary and secondary windings each of which the iron tape is wound.

In addition, by shielding the iron tape to one pole, the transformer can shield the electric field (electrostatic shielding). That is, by grounding one pole in the process of using iron tape in a transformer, electrostatic shielding and surge transmission between devices can be suppressed.

5 is a view showing the type of iron tape having a directional molecular pole according to an embodiment of the present invention.

5A shows a vertical tape in which the tape advancing direction is perpendicular to the tape width, b) in FIG. 5 shows a horizontal tape in which the tape advancing direction is horizontal with respect to the tape width, and c) in FIG. The tape advancing direction represents an inclined tape having a predetermined inclination with respect to the tape width. That is, the iron tape having a directional molecular pole according to an embodiment of the present invention can be selectively used among the vertical tape, horizontal tape and inclined tape.

6A and 6B are diagrams for explaining a case where a magnetic field is applied to a molecular magnet.

6A and 6B, the basic principle of molecular magnets will be described.

Typically, breaking the rubber magnet 400 smaller also results in a smaller magnet. Therefore, it can be seen that the magnet 400 is composed of microscopic magnets of molecular size. Such a micro magnet is called a molecular magnet 410.

In the case of ordinary iron, as shown in Figure 6b, the molecular magnet 410 is in a random direction by the magnetic molecules are arranged randomly, as shown in Figure 6b, when the magnetic field is applied, the molecular magnet 410 ) Is aligned with the magnetic field to form the magnet 400. For example, by applying a strong S-pole magnetic field, the magnetic molecules are arranged facing the corresponding poles, and opposite magnets appear on the opposite side.

In reality, however, the disordered metals are arranged in a limited manner without being subjected to external magnetic poles, and as shown in FIG. 6B, they are aligned and become permanent magnets that are difficult to reduce due to mutual attraction between magnetic poles.

Therefore, in the case of such an aligned metal, the rear surface thereof is less likely to be subjected to magnetic field induction since there is little change with respect to an external magnetic field. This principle is already known as the molecular magnetic field (vice magnetic field), which is the theory of molecular magnets. Specifically, the ferromagnetic theory that the magnetic moments of ferromagnetic atoms are aligned in parallel due to the magnetic field called molecular magnetic field is called the vise magnetic field.

On the other hand, the change of the general magnetic flux is not induced in the magnetic field range orthogonal to the structure inside the molecular pole of the material, and a considerable amount of energy is required for the molecular poles arranged in a certain direction to move by the external magnetic field. That is, an external magnetic field of limited energy moves through a limited range of changes as it passes through a metallic tape with a regular array of molecular fluxes, requiring a large force to disperse the alignment of the fixed molecular poles. It has a limited induction current in the induction winding at. As a result, the induction of the magnetic force lines canceled in the orthogonal direction and the magnetization direction characteristic of the molecular poles can be substantially attenuated. Furthermore, by winding each of the windings for the primary and secondary windings, which are the basic structures of the transformer, and placing them in separate spaces, magnetic field interference between the primary and secondary windings can be further reduced.

7A and 7B are diagrams for explaining the case where a magnetic field is applied to an iron tape having a directional molecular pole.

FIG. 7A shows the magnetic field induction of a tape having an unaligned molecular pole structure, and FIG. 7B shows the magnetic field induction of a tape having an aligned molecular pole structure.

Referring to FIG. 7A, in the tape having an unaligned molecular pole structure, when the alignment of the molecular poles is scattered, the molecular poles move freely and easily move to the change of the magnetic field while the average polarity occurs. Accordingly, since the change of the magnetic field occurs in the rear of the external magnetic field, the current flows in the winding.

Referring to FIG. 7B, in the tape having the aligned molecular pole structure, when the polarities between the molecular poles are aligned, the compatibility between different materials is not easy. In addition, the scattering of the alignment is minimized because the attractive force between the molecular poles is large for the external magnetic field. Therefore, even when the external magnetic field approaches, there is no scattering of the molecular poles, and no induction current is generated in the induction winding.

On the other hand, Figure 8 is a view for explaining the case of applying a magnetic field to the directional molecular magnetic iron plate, even in the case of the directional molecular magnetic iron plate 500 has a aligned molecular pole structure, even if the external magnetic field approaches the scattering of the molecular pole And no induction current is generated in the induction winding.

Specifically, if the entire winding is wound using a metallic material and then connected to the ground, an electric shielding effect according to the Faraday cage effect can be realized since the shielding has an electrical shielding effect by the metallic shielding. Here, the Faraday cage is wrapped in conductors of suitable intervals around the object to be protected, for example, the entire cage is always equipotential unless the lightning current patch is abruptly changed, and the internal electric field is zero (Zero). It means that no lightning current flows inside.

In the transformer for preventing lightning and noise using an iron tape having a directional molecular pole according to an embodiment of the present invention, the magnetic pole has a horizontal or vertical arrangement or a magnetic tape having an inclined surface. The primary and secondary windings are wound with a molecular pole tape, and at this time, the molecular poles of the iron tape and the molecular poles of the core cross each other at orthogonal or inclined surfaces, thereby shielding the induced magnetic field due to the mutual magnetic field canceling effect. have.

That is, in the conventional transformer method, the winding for the completed transformer wound around the copper wire is wound separately from the primary winding and the secondary winding, and then the insulated molecular pole iron tape is wound around each of the primary winding and the secondary winding, thereby preventing the electric field from the outside. And the magnetic field can be easily shielded at the same time.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: core for transformer
200: iron tape-wound primary winding
300: iron tape-wound secondary winding
310: secondary winding
320: iron tape
321: oriented steel sheet
322: first insulating tape
323: second insulating tape
330: iron tape shield winding
400: molecular magnet
410: molecular pole (stimulation of molecular magnets)
500: directional molecular magnet iron plate

Claims (6)

In the transformer for attenuating the induced magnetic field caused by lightning and noise,
Core for transformer;
An iron tape winding primary coil wound around the transformer core and formed by winding an iron tape having a directional molecular pole in the primary winding;
An iron tape-wound secondary winding wound around the transformer core and formed by winding an iron tape having a directional molecular pole in the secondary winding; And
An iron tape shield winding inserted into the core and connecting the iron tape to ground, respectively.
Including,
The iron tape having the directional molecular poles is a tape of a magnetic material, the molecular poles of the iron tape and the molecular poles of the core are arranged so as to cross orthogonal or inclined surface with each other to shield the induced magnetic field due to the magnetic field offset between each other Transformer for preventing lightning and noise using iron tape having a directional molecular pole. The method of claim 1,
The iron tape-wound primary winding and the iron tape-wound secondary winding may shield directional molecular poles by shielding an induced electromagnetic field by a double shielding structure which is respectively located in a space separated from each other. Transformer for preventing lightning and noise by using iron tape. The method of claim 1,
The iron tape is a metallic iron tape grounded by the iron tape shield winding, shielding the electric field (electrostatic shielding) characterized in that the lightning and noise prevention transformer using an iron tape having a directional molecular pole. According to claim 1, The iron tape having a directional molecular pole,
First insulating tape;
Second insulating tape; And
A oriented steel sheet inserted between the first insulating tape and the second insulating tape so that both surfaces are insulated by the first insulating tape and the second insulating tape.
Transformer for lightning protection and noise using iron tape having a directional molecular pole comprising a. The method of claim 1,
The iron tape having the directional molecular poles may be a vertical tape in which the tape advancing direction is perpendicular to the tape width, a horizontal tape in which the tape advancing direction is horizontal to the tape width, or the tape advancing direction has a predetermined inclination with respect to the tape width. A transformer for preventing lightning and noise using an iron tape having a directional molecular pole, which is an inclined tape having. The method of claim 1,
The iron tape is wound separately from the primary winding and the secondary winding, respectively, the directional powder, characterized in that for use in combination of at least two of the iron tape winding primary winding and the iron tape winding secondary winding. Transformer for preventing lightning and noise using iron tape with magnetic poles.

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