KR100641025B1 - Electro-Magnetic Force driving Actuator and Circuit Breaker using the same - Google Patents

Abstract

The present invention relates to a manipulator and a breaker used in a power system, and more particularly, having a small size and weight, the manipulator using an electromagnetic repulsive force capable of maximizing a manipulation speed and a maneuverability and an excellent breaking performance using the manipulator. By exhibiting, it can be particularly useful in high and ultra high pressure circuit breakers, and relates to a circuit breaker that can also be used for low pressure.

In the present invention, the hollow inner cylinder made of a magnetic body; An outer cylinder made of a magnetic body, the outer cylinder being concentric with the inner cylinder and installed to maintain a predetermined distance radially outward from the inner cylinder; Inner and outer permanent magnets disposed in contact with the outer surface of the inner cylinder and the inner surface of the outer cylinder to maintain a predetermined distance from each other; A coil installed between the inner permanent magnet and the outer permanent magnet so as to be linearly moved in an axial direction; And the coil is installed at one end thereof, and when a current is supplied to the coil, between the inner permanent magnet and the outer permanent magnet by the magnetic field caused by the inner and outer permanent magnets and the electromagnetic repulsion force caused by the current density of the coil. A manipulator is provided that includes a nonmagnetic mover that linearly moves in an axial direction.

In addition, a circuit breaker is provided which is connected to the other end of the mover and includes an insulation operation rod configured to linearly move by the mover to perform a closed pole operation and an opening operation.

Breaker, gas, soho, manipulator, paffer

Description

Manipulator using electromagnetic force and breaker using same {Electro-Magnetic Force driving Actuator and Circuit Breaker using the same}

Fig. 1A is a closed state cross-sectional view showing an example of a PAPER SOHO type breaker in a conventional breaker.

FIG. 1B is an enlarged view showing in detail a blocking part shown in FIG.

2A is a cross-sectional view showing the configuration of a manipulator according to a first preferred embodiment of the present invention.

2B is a cross-sectional view taken along the line A-A of FIG. 2A.

3A to 3C are sectional views showing the configuration of the circuit breaker provided with the manipulator according to the first embodiment of the present invention, in which the circuit breaker is changed from the closed state to the extinguished state and the open state.

4 is a three-dimensional cross-sectional view showing the configuration of a manipulator according to a second preferred embodiment of the present invention.

5A and 5B are views showing in detail the components of the manipulator according to the second embodiment of the present invention.

Figure 6 is a stage showing a circuit breaker equipped with a manipulator according to a second embodiment of the present invention.

7A and 7D are cross-sectional views sequentially illustrating an operation process of the manipulator according to the second embodiment of the present invention.

8A and 8B are graphs showing force and current characteristics of moving a mover when only the inner and outer permanent magnets are provided without the first and second magnetic rings and the auxiliary permanent magnet in the manipulator according to the second embodiment of the present invention.

9A and 9B are graphs showing force and current characteristics when the manipulator according to the second embodiment of the present invention further includes the first and second magnetic rings and the auxiliary permanent magnet.

10A and 10B are a plan view and a three-dimensional cross-sectional view showing the configuration of an electromagnet manipulator according to a third embodiment of the present invention, respectively.

<Explanation of symbols for the main parts of the drawings>

2: container 10: cutout

11: fixed arc contactor 12: fixed main contactor

13: insulated cylinder 14: fixed piston

15: support 16: support insulator

17: air supply 18: euro

21: movable arc contactor 22: movable main contactor

23: insulated nozzle 24: popper cylinder

25: insulation operation rod 100: manipulator

110: inner cylinder 120: outer cylinder

130: inner permanent magnet 132: outer permanent magnet

140: coil 142: power supply line

150: mover 152: movable ring

154: moving shaft 156: connecting shaft

158: connecting plate 160: first end plate

162: second end plate 170: pin

180: buffer means

200,300: manipulator 210,310: body

211: chamber 220: inner permanent magnet

230: outer permanent magnet 240: mover

241: coil 242: first magnetic ring

243: second magnetic ring 244: insulator housing

251: first inner auxiliary permanent magnet 252: first outer auxiliary permanent magnet

255: second inner auxiliary permanent magnet 256: second outer auxiliary permanent magnet

261: first buffer means 262: second buffer means

271,272: Rod 281,282,321,322: Support

281a, 321a: Connection

300a, 300b, 300c, 300d: Electromagnet Control Panel

The present invention relates to a manipulator and a breaker used in a power system, and more particularly, having a small size and weight, the manipulator using an electromagnetic repulsive force capable of maximizing a manipulation speed and a maneuverability and an excellent breaking performance using the manipulator. The present invention can be particularly useful for high pressure and ultra high pressure circuit breakers, and can be easily applied for low pressure circuit breakers.

The breaker is mainly installed in the transmission line or power receiver of the power transmission line, and it can open and close the normal current when there is no failure in the power system, and cut off the fault current when the short circuit occurs. Protect.

Such breakers are classified into vacuum circuit breakers (VCB), oil circuit breakers (OCB), gas circuit breakers (GCB), and the like according to the arc / insulation medium.

When the breaker interrupts the fault current, it is necessary to extinguish the arc between the two contacts. The gas circuit breaker may be further changed into a puffer type, a rotary arc type, a thermal expansion type, a hybrid extinction type, etc. according to the arc extinguishing method. Are classified.

In the accompanying drawings, Fig. 1A and Fig. 1B show an example of the above-mentioned paper extinguishing type gas circuit breaker.

The PAPER SOHO type gas circuit breaker uses SF6 gas (sulfur hexafluoride, hereinafter referred to as 'extinguishing gas') as the extinguishing / insulating medium and is mainly used for ultra high pressure (typically 72.5 kV or more) circuit breakers.

As shown in FIGS. 1A and 1B, the paper extinguishing type gas circuit breaker is generally composed of a breaker 10 for blocking a fault current, and a manipulator 50 for operation of the breaker 10. have.

The blocking part 10 is composed of a fixed part and a movable part, and is installed in a container 2 filled with SF6 gas therein.

The fixed part in the said interruption | blocking part 10 is equipped with the fixed arc contact 11 and the fixed main contact 12, while the insulating cylinder 13, the fixed piston 14, the support stand 15, and the support insulator ( 16) and the like.

The movable part in the said interruption | blocking part 10 is equipped with the movable arc contactor 21, the movable main contactor 22, the insulation nozzle 23, the popper cylinder 24, and the insulation operation rod 25. As shown in FIG.

The operating rod 51 of the manipulator 50 is connected to the insulation manipulation rod 25. The movable arc contactor 21, the movable main contactor 22, the insulation nozzle 23, and the popper cylinder 24 are integrally connected to the insulation operation rod 25.

Therefore, when the manipulator 50 is driven, the insulation manipulation rod 25 is moved by the operation rod 51. Subsequently, the movable arc contactor 21, the movable main contactor 22, the insulation nozzle 23, and the popper cylinder 24 move integrally with the movement of the insulation operation rod 25 to operate a closed electrode (current input). Over-current (current blocking) operation is performed.

Specifically, in the steady state, as shown in FIG. 1A, the steady current flows while maintaining the closed state.

However, once an abnormality occurs in the power system and a fault current of several times the normal current (for example, about 10 times) flows, the manipulator 50 is operated by the fault current. Then, as shown in FIG. 1B, the operation rod 51 by the manipulator 50 is pulled, and the operation rod 51 pulls the insulation operation rod 25. Thus, the movable arc contact 21 is separated from the fixed arc contact 11, and the movable main contact 22 is separated from the fixed main contact 12.

At the same time, the popper cylinder 24 is pulled in a direction against the fixed piston 14 to compress the extinguishing gas inside the popper cylinder 24. The compressed extinguishing gas passes through the air supply port 17 and the flow path 18 and is ejected in the direction of the arrow in FIG. 1B to quickly extinguish the arc plasma generated between the fixed arc contact 11 and the movable arc contact 21. The current is cut off (open state).

In such a circuit breaker, the opening operation must be performed at high speed in order to interrupt the fault current and quickly recover the insulation between the poles. By the way, since arc arc is not fully formed only by forming an arc plasma and opening an opening gap, it is necessary to inject an arc extinguishing gas as mentioned above. Therefore, the manipulator 50 must bear the force for compressing the extinguishing gas, that is, the force for operating the popper cylinder 24 against the fixed piston 14.

In other words, in order to increase the opening speed, the operating force must be greatly increased, so that the manipulator 50 requires a larger force and a larger speed.

For example, breakers for high voltage / ultra high voltage (typically 365kv or more) for power transmission have an opening gap (SL: Stroke Length) of about 250 mm and can complete operation within an extremely short time of 45 ms (milliseconds). It requires a lot of strength and speed.

At present, high pressure / ultra high pressure circuit breakers are mainly used with hydraulic actuators or pneumatic actuators. However, these manipulators are expensive enough to occupy one third of the total price of the circuit breaker, and in the case of Korea, most of them depend on imports. In addition, such a hydraulic or pneumatic actuator may be a leakage of the working fluid in accordance with the ambient temperature change. In addition, there are many concerns that the manipulator will not work even if only one of the parts is broken because of many parts.

Therefore, research for developing a manipulator that can replace the hydraulic or pneumatic manipulator has been made worldwide. As a result of the research, spring actuators (spherical springs), motor drives (systems for converting rotational motions into linear motions using motors), and PMA actuators (Permanent Magnetic Actuator) are used. .

However, since the spring manipulator is a system that obtains power by releasing the compressed force when necessary in a state in which the spring is compressed, the manufacturing cost is low, but the elasticity of the spring is not constant, so the reliability of the operating state is low. have. For this reason, it is difficult to apply for high pressure or ultra high pressure that requires the injection of SOHO gas, and the probability of blocking failure is greatly increased when it is applied.

The motor drive is said to be inexpensive in manufacturing cost compared to pneumatic or hydraulic pressure, but it is still expensive and has a problem in that it is difficult to exert a large force. .

The PMA manipulator is to operate the mover by the force of the magnetic field generated in the permanent magnet and the electromagnetic force generated by the current flowing through the coil. Therefore, it is made of a very simple structure, the efficiency of its operation is also good, there is an advantage that can expect a constant and uniform operation has been widely used as a manipulator for low pressure circuit breaker recently.

However, since the PMA manipulator is a system that must be driven by the force of the magnetic field generated in the permanent magnet and the force of the magnetic field generated by passing a current through the coil, the path through which the magnetic field flows must be made into a magnetic body (iron core). In addition, the movable mover must also be made of magnetic material. Therefore, when the breaking capacity is increased and the actuator requires more force, a large amount of magnetic field must be generated, and the magnetic field is saturated (magnetic saturation state: When the magnetization proceeds to a certain degree, the magnetization is increased even if the current is further increased. In the self-saturated state, the magnetic body must be so large that it can flow without increasing the current even in the self-saturated state. Since the magnetic flux density of the permanent magnet and the coil becomes larger and inversely proportional to the square of the pore length, there is a limit to the application of the breaker for a high voltage or ultra high voltage with a large contact gap of the breaker.

For example, if the PMA is applied to the manipulator of a low voltage circuit breaker with an opening gap of about 20 mm, the size of the optimized model (width × length × thickness) is 200 × 250 × 100 mm, so that its weight alone should weigh more than 10 kg. do. Therefore, when such a PMA manipulator is used at ultra high pressure, its size must be very large, its weight is much higher than that of a hydraulic or pneumatic manipulator, and manufacturing costs are increased. Therefore, there is still no way to use the PMA manipulator for high or ultra high pressure.

Therefore, an object of the present invention, by using a manipulator using an electromagnetic force capable of maximizing the operating speed and operating force while having a small size and weight, and exhibiting excellent breaking performance using the manipulator, can be particularly useful for ultra high pressure and high pressure circuit breakers. The present invention also provides a circuit breaker that can also be used for low pressure.

In order to achieve the above object, the manipulator according to the first embodiment of the present invention, the hollow inner cylinder made of a magnetic body; An outer cylinder made of a magnetic body, the outer cylinder being concentric with the inner cylinder and installed to maintain a predetermined distance radially outward from the inner cylinder; Inner and outer permanent magnets disposed in contact with the outer surface of the inner cylinder and the inner surface of the outer cylinder to maintain a predetermined distance from each other; A coil installed between the inner permanent magnet and the outer permanent magnet so as to be linearly moved in an axial direction; And the coil is installed at one end thereof, and when a current is supplied to the coil, between the inner permanent magnet and the outer permanent magnet by the magnetic field caused by the inner and outer permanent magnets and the electromagnetic repulsion force caused by the current density of the coil. It characterized in that it comprises a non-magnetic mover that linearly moves in the axial direction.

The manipulator according to the first embodiment of the present invention has a structure in which the mover is operated by a force generated by a magnetic field caused by a permanent magnet and an electric field caused by a coil current, so that a large operation force and operation speed can be achieved even with a small size and weight. Exert.

In the actuator according to the first embodiment of the present invention, the movable member of the nonmagnetic material is provided with the coil at one end thereof, and is installed to allow linear motion in the axial direction between the inner permanent magnet and the outer permanent magnet. Movable ring; And it is possible to include a moving shaft which is installed to the linear movement inside the inner cylinder and at the same time one end thereof is connected to the movable ring to move linearly in the axial direction by the movable ring.

Here, the inner permanent magnet and the outer permanent magnet may be made of a superconducting magnet.
It is preferable that the manipulator according to the first embodiment of the present invention includes a first end and a second end plate made of a magnetic body and blocking both ends of the inner and outer cylinders to induce a smooth magnetic flow.

On the other hand, the breaker according to the invention, the hollow inner cylinder made of a magnetic body; An outer cylinder made of a magnetic body, the outer cylinder being concentric with the inner cylinder and installed to maintain a predetermined distance radially outward from the inner cylinder; Inner and outer permanent magnets disposed in contact with the outer surface of the inner cylinder and the inner surface of the outer cylinder to maintain a predetermined distance from each other; A coil installed between the inner permanent magnet and the outer permanent magnet so as to be linearly moved in an axial direction; The coil is installed at an end thereof, and when a current is supplied to the coil, an axial direction is formed between the inner permanent magnet and the outer permanent magnet by the magnetic field caused by the inner and outer permanent magnets and the electromagnetic repulsion force caused by the current density of the coil. Mover of nonmagnetic material linearly moving; And an insulated manipulation rod connected to the other end of the mover to linearly move by the mover to perform the closing and opening operation.
In the breaker of the present invention, the inner permanent magnet and the outer permanent magnet may be made of a superconducting magnet.
In the circuit breaker of the present invention, the movable member of the nonmagnetic material, the coil is provided at one end, the movable ring is installed to enable linear movement in the axial direction between the inner permanent magnet and the outer permanent magnet; And a linear movement is provided inside the inner cylinder so that one end thereof is connected to the movable ring and the other end thereof is connected to the insulation operation rod, so that the insulation operation is performed by linearly moving in the axial direction by the movable ring. It may include a moving shaft for moving the rod.
In the circuit breaker of the present invention described above, a magnetic body may include first and second end plates which induce a smooth flow of magnetic field by blocking both ends of the inner and outer cylinders.
In the circuit breaker of the present invention described above, in the circuit breaker according to the present invention described above, it is preferable to provide a shock absorbing means for absorbing the impact force at a portion that becomes the end of the movable direction of the mover.

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Here, the buffer means may be made of a compression coil spring.

The manipulator according to the second embodiment of the present invention includes a body of a magnetic body having an annular chamber formed therein; An annular inner permanent magnet and an outer permanent magnet installed concentrically by maintaining a predetermined interval in the radial direction inside the chamber of the body; And an annular coil, which is installed to allow linear movement in the axial direction between the inner permanent magnet and the inner permanent magnet, and when the current is supplied to the coil, the magnetic field and the magnetic field caused by the inner permanent magnet and the outer permanent magnet. And a mover linearly moving in the axial direction between the inner permanent magnet and the outer permanent magnet by the electromagnetic repulsive force due to the current density of the coil.

At both ends of the inner and outer permanent magnets, an annular first inner and outer auxiliary permanent magnet and a second inner and outer auxiliary permanent magnet are respectively provided, and the movable member is provided at both ends of its coil in an annular shape. The first magnetic ring and the second magnetic ring may be disposed to be integrated with the coil.
In the manipulator according to the second embodiment of the present invention, the inner and outer permanent magnets may be provided at both ends of an annular first inner and outer auxiliary permanent magnet and a second inner and outer auxiliary permanent magnet, respectively.

Here, the polarities of the first inner and outer auxiliary permanent magnets and the second inner and outer auxiliary permanent magnets are arranged in directions opposite to the polarities of the inner and outer permanent magnets.
The inner permanent magnet and the outer permanent magnet may be made of a superconducting magnet.

In the manipulator according to the second embodiment of the present invention, the inner permanent magnet and the outer permanent magnet may be made of a superconducting bulk magnet.

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In the manipulator according to the second embodiment of the present invention, the coil and the first and second magnetic rings are preferably embedded in an insulator housing and integrated therein. In this case, the insulator housing may be made of plastic.

In the manipulator according to the second embodiment of the present invention, first and second buffering means are provided at both ends of the mover to prevent the end of the mover from colliding with the body at the end of the mover in the axial direction. Can be installed.

Here, the first and second buffer means may be made of a compression coil spring.

When the first and second buffering means are employed as the compression coil spring, the compression coil spring may be disposed between the inner permanent magnet and the outer permanent magnet.

In the manipulator according to the second embodiment of the present invention, a rod of a plurality of nonmagnetic materials is connected to one end of the mover, and a support for connecting to a driven part is provided at an end of the plurality of nonmagnetic rods. Can be.

The breaker according to another embodiment of the present invention is insulated connected to the mover in order to perform the closed pole operation and the opening operation by linearly moving by the manipulator according to the second embodiment of the present invention and the mover of the mall manipulator. Contains an operation rod.

The manipulator according to the third embodiment of the present invention is provided with a plurality of electromagnet manipulators in one body made of a magnetic body, and the plurality of manipulators are each of a toroidal type which are installed concentrically while maintaining a constant interval in the radial direction. An inner permanent magnet and an outer permanent magnet; It has an annular coil, which is installed to allow linear movement in the axial direction between the inner permanent magnet and the inner permanent magnet, and when the current is supplied to the coil, the magnetic field and the coil by the inner permanent magnet and the outer permanent magnet A movable member linearly moving in the axial direction between the inner permanent magnet and the outer permanent magnet by the electromagnetic repulsive force due to the current density of the magnet; A plurality of rods connected to the plurality of movers; And a support for connecting the ends of the plurality of rods in one.

The circuit breaker according to another embodiment of the present invention is connected to the support in order to perform the closing and opening operation by performing a linear motion by the manipulator according to the third embodiment of the present invention and a plurality of movers of the manipulator. Insulation operation rod.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

2A and 2B show a manipulator according to a first preferred embodiment of the present invention. 2A is a cross-sectional view showing the configuration of the manipulator, and FIG. 2B is a cross-sectional view A-A of FIG. 2A.

In FIG. 2A, the figure on the right shows a state before the manipulator operates (closed state), and the figure on the left shows a state after the manipulator operates (open state).

As shown in Figure 2a and 2b, the manipulator 100 according to the present invention is an electro-magnetic actuator (EMFA), inner cylinder 110, outer cylinder 120, inner and outer permanent magnets 130, 132, coil 140, and mover 150.

The inner cylinder 110 and the outer cylinder 120 is made of a magnetic material, are arranged concentrically by maintaining a predetermined distance from each other in the radial direction.

The inner permanent magnet 130 is installed in contact with the outer surface of the inner cylinder 110, the outer permanent magnet 132 is installed in contact with the inner surface of the outer cylinder 120. Therefore, the inner permanent magnet 130 and the outer permanent magnet 132 is to maintain a constant interval in the radial direction.

The coil 140 is installed to allow linear movement in the axial direction between the inner permanent magnet 130 and the outer permanent magnet 132. The current is supplied to the coil 140 by the power supply line 142.

The mover 150 is made of a nonmagnetic material, one end of which is provided with the coil 140. Therefore, when the current is supplied to the coil 140, the movable element 150 is applied to the 'magnetic field' and the coil 140 current by the inner permanent magnet 130 and the outer permanent magnet 132. A linear motion in the axial direction between the inner permanent magnet 130 and the outer permanent magnet 132 by the force generated by the 'electric field' by.

In the specific embodiment shown in the drawings, the movable member 150 includes a movable ring 152 and a moving shaft 154.

Specifically, the movable ring 152 is installed to allow a linear movement in the axial direction between the inner permanent magnet 130 and the outer permanent magnet 132. The coil 140 is installed at one end of the movable ring 152. Therefore, when the current is supplied to the coil 140, the movable ring 152 is linearly moved in the axial direction together with the coil 140.

The moving shaft 154 is installed in the center of the inner cylinder 110 to enable a linear movement. At the same time, one end of the movable shaft 154 is connected to the movable ring 152. Therefore, the moving shaft 154 linearly moves in the axial direction integrally with the movable ring 152.

In the embodiment shown in FIG. 2A, the movable ring 152 and the moving shaft 154 have a structure integrated by the connecting shaft 156 and the connecting plate 158.

The connecting shaft 156 is extended from the movable ring 152, the connecting plate 158 is connected to the end of the plurality of connecting shaft 156.

The moving shaft 154 extends from the center of the connecting plate 158 and is inserted into the inner cylinder (center) of the inner cylinder 110 in a state capable of linear movement.

Meanwhile, first and second end plates 160 and 162 are provided at both end portions of the inner cylinder 110 and the outer cylinder 120. The first and second end plates 160 and 162 are made of a magnetic material, and the magnetic fields flow smoothly between the inner cylinder 110 and the outer cylinder 120 by blocking both ends of the inner cylinder 110 and the outer cylinder 120. It plays a role. In this case, the connecting shaft 156 is connected to the connecting plate 158 through the second end plate 162.

The manipulator of the present invention, which is configured as described above, linearly moves the mover 150 by the force generated by the magnetic field by the permanent magnets 130 and 132 and the electric field by the current of the coil 140 by applying the Fleming's left hand law. Electromagnetic Manipulator (EMFA).

As shown in the left side of FIG. 2A, when a current is applied to the coil 140 of the manipulator 100, the coil 140 is formed by a magnetic field by the permanent magnets 130 and 132 and an electric field of the coil 140. The force to move axially is applied. Accordingly, the coil 140 is moved axially with the mover 150.

Specifically, when the current flows to the coil 140 in the direction shown in the left side of FIG. 2A, the coil 140 receives a force to move downward in the drawing, and thus the coil 140 and the movable part. Ring 152 is moved downward.

As the movable ring 152 moves downward in this manner, when the movable shaft 154 connected to the movable ring 152 is moved downward, the state shown in the drawing on the right side of FIG. 2A is maintained.

Manipulator 100 of the present invention made as described above, the principle of obtaining a force to move in the axial direction by flowing a current in the direction perpendicular to the magnetic field to the coil 140 in the space in which the magnetic field is formed by the permanent magnets (130,132) Has

As described above in the prior art, the general PMA manipulator is a system that moves the mover by the magnetic force generated by the permanent magnet and the magnetic force generated by passing the current through the coil. In addition, the movable mover must also be made of magnetic material.

Therefore, in order to obtain a greater operating force, a large amount of current must be applied to the coil. Even if the current is continuously increased due to the saturation problem of the magnetic material, the operating force over a certain limit cannot be obtained. In addition, in order to solve such a problem, the size of the magnetic material must be increased, so that the manipulator becomes too large, and the magnetic flux density excited by the permanent magnet and the coil current is inversely proportional to the square of the pore distance. There is a limit to the application of high voltage and ultra high voltage circuit breaker with large contact gap.

여기서, J는 전류 밀도이고, B는 자속밀도이다. However, the manipulator of the present invention has the principle of applying a force such as [Equation 1] to the mover by applying a left-hand rule of Fleming to flow a current in a direction perpendicular to the space where the magnetic field is formed.

Where J is the current density and B is the magnetic flux density.

As described above, the magnetic field of the conventional permanent magnet causes a saturation problem of the magnetic body, and the magnetic flux density is greatly influenced by the pore distance. However, the manipulator 100 according to the present invention forms a current density by the current of the coil 140 in the vertical direction of the magnetic field in a state in which a magnetic field is formed in the coil 140 by a permanent magnet. Since the electron repulsion force by Ming's left hand law is used, the amount of current flowing through the coil 140 is directly converted into a force. Therefore, when a large amount of current flows to the coil 140, the big power can be obtained by that much.

Therefore, in the manipulator 100 of the present invention, the electromagnetic force generated from the magnetic field excited by the current of the coil 140 does not use the force applied to the air gap, but the electromagnetic repulsive force due to the external magnetic flux density and the current density in the coil 140 region. Since it is operated by the magnetic force, it is not necessary to think about the saturation problem of the magnetic body in the place where the electromagnetic force is applied, and only by winding the number of turns of the coil 140 and increasing the intensity of the current, a larger operating force can be obtained, so that the size of the manipulator And the weight can be greatly reduced. In other words, you can get a very large operating force compared to the size and weight.

On the other hand, the conventional PMA manipulator must allow sufficient magnetic flux density to be formed in the gap between the mover and the iron core (stator). Since the magnetic flux density is inversely proportional to the square of the distance between the voids, a large amount of coil current needs to flow in order to form a sufficient magnetic flux density. Therefore, the reactivity, that is, the initial operating speed is bound to be slow. However, since the manipulator according to the present invention is supplied with a current to the coil 140 and generates an electromagnetic repulsive force with an external magnetic field, the initial speed is very fast and powerful.

3A to 3C show the configuration of a circuit breaker according to a preferred embodiment of the present invention using the above-described manipulator, and FIG. 3A shows when the circuit breaker is in the closed state, and FIG. The figure which shows is a figure in the open state completed state in FIG. 3C.

The same components as in FIGS. 1A, 1B and 2A, 2B are denoted by the same reference numerals, and repeated description thereof will be omitted.

3A to 3C, in the circuit breaker according to the present invention, the insulating operation rod 25 is configured to be connected to the end of the mover 150 of the manipulator 100 described above. Therefore, the insulation manipulation rod 25 is moved in the axial direction by the movement of the mover 150 to perform the closing and opening operation.

Specifically, one end of the insulation manipulation rod 25 is connected to the end of the moving shaft 154 of the movable member 150 through the pin 170.

In the circuit breaker according to the present embodiment, the end of the insulating operation rod 25 and the movable shaft 154 of the mover 150 may be directly connected to each other, as shown in FIGS. 3A to 3C, It may be connected via a predetermined link mechanism or the like in the middle.

In the circuit breaker according to the present embodiment, it is preferable that the shock absorber 180 is provided at a point where the movable part 150 becomes the end of the movement in the opening direction. The shock absorber 180 absorbs or attenuates the impact that the movable ring 152 of the movable member 150 strikes the second end plate 162 when the movable member 150 is moved in the opening direction. do. As in the embodiment shown in the figure, the chute means 180 may be made of a compression coil spring.

The breaker made as described above, the manipulator 100 is composed of a manipulator 100 according to the first embodiment of the present invention. Since the specific blocking operation of the circuit breaker has already been described with reference to FIGS. 1A and 1B, and the operation of the manipulator 100 has already been described with reference to FIGS. 2A and 2B, the following description will be briefly avoided.

First, when an abnormality occurs in the power system in the closed state as shown in FIG. 3A and a fault current reaching several times the normal current flows, the current is supplied to the coil 140 of the manipulator 100. Then, as shown in FIG. 3B, the coil 140 and the mover 150 move while pulling the insulation manipulation rod 25. Thus, the movable arc contact 21 is separated from the fixed arc contact 11, and the movable main contact 22 is released from the fixed main contact 12. Then, the popper cylinder 24 is pulled in a direction against the fixed piston 14 to compress the extinguishing gas inside the popper cylinder 24. Accordingly, the compressed extinguishing gas is blown out through the air supply port 17 and the flow path 18 to extinguish the arc plasma generated between the fixed arc contact 11 and the movable arc contact 21.

Thereafter, when the mover 150 is further retracted to pull the insulation operation rod 25 further, as shown in Fig. 3C, a complete open state is achieved.

At this time, at the end of the movement of the mover 150, the end of the mover 150 hits the shock absorbing means 180 to absorb the impact force. Therefore, since the moving speed of the mover 150 is decelerated at the last stage of opening, the movable ring 152 of the mover 150 does not collide with the second end plate 162.

As described above, in order for the breaker to interrupt the fault current and quickly recover the insulation between the poles, a large force and a high speed are required to complete the operation in a very short time. In particular, a breaker of high pressure / ultra high pressure having a large breaking capacity requires a manipulator having a very large operating force.

In the circuit breaker of the present invention, since the actuator 100 which operates by the electromagnetic repulsive force is provided, it is not necessary to consider the saturation problem of the magnetic body. Therefore, by simply winding the number of turns of the coil 140 and increasing the intensity of the current, a larger operating force can be obtained, and thus a very large operating force can be obtained in comparison with the increase in size and weight thereof. As such, the manipulator of the present invention has a very high initial speed.

Therefore, the breaker of the present invention using the manipulator 100 as described above can exhibit a very good performance in the high-voltage / ultra-high pressure breaker for transmission of 365kv or more that was difficult to apply in the prior art. In particular, the gas extinguishing type circuit breaker which has to bear the force for compressing the extinguishing gas in the manipulator, and even the gas extinguishing type circuit breaker of the paper extinguishing method can exhibit excellent performance.

In addition, the circuit breaker according to the present invention can increase and decrease the size and operating force by adjusting the number of turns of the coil, etc., so that not only the circuit breaker for the high pressure / ultra high pressure described above, but also for the low pressure can be easily applied with a small size and weight. .

In the above description, the popper arc-type circuit breaker shown in the drawings has been described as an example, but the manipulator of the present invention includes a vacuum circuit breaker, an oil circuit breaker, a circuit breaker of a rotary arc arcing method, a circuit breaker of a thermal expansion arcing method, and a compound arcing method. It can be easily applied to most circuit breakers that require great power and speed, such as breakers, and the efficiency thereof is very large.

<Example 2>

4, 5A and 5B show a manipulator according to a second embodiment of the present invention. The manipulator according to the second embodiment has a form in which the electromagnet manipulator (EMFA) according to the first embodiment is modified.

As shown in FIG. 4, the manipulator 200 according to the second embodiment of the present invention includes a magnetic body 210 having an annular chamber 211 formed therein, and a chamber of the body 210. The inner permanent magnet 220 has an annular inner permanent magnet 220 and an outer permanent magnet 230 and an annular coil 241 which are installed concentrically by maintaining a predetermined interval in the radial direction therein. ) And an annular movable member 240 installed to be linearly movable in the axial direction between the inner and the permanent magnet 230.

The mover 240 having the coil 241 has a magnetic field generated by the inner permanent magnet 220 and the outer permanent magnet 230 and the coil 241 current when a current is supplied to the coil 241. A linear motion in the axial direction between the inner permanent magnet 220 and the outer permanent magnet 230 by the force generated by the electric field by.

The body 210 is preferably made of a form that is divided into a first body 210a and a second body 210b to be coupled to each other for the installation of the inner and outer permanent magnets 220 and 230 and the mover 240. .

In the present exemplary embodiment, an annular first magnetic ring 242 and a second magnetic ring 243 are formed at both ends of the coil 241 of the mover 240, respectively, of the coil 241 and one body. Can be installed as Integration of the coil 241 and the first and second magnetic rings 242 and 243 may be achieved by embedding the coil 241 and the first and second magnetic rings 242 and 243 in the insulator housing 244. The size (length) of the first and second magnetic rings 242 and 243 may be configured differently according to the holding force of the driven member. For example, there may be a difference depending on the difference between the holding force required to continuously maintain the closed state of the breaker and the holding force required to continuously maintain the open state.

Corresponding to the first and second magnetic rings 242 and 243, the inner and outer permanent magnets 220 and 230 are provided at both ends of the annular first and outer auxiliary permanent magnets 251 and 252 and the second ends, respectively. Inner and outer auxiliary permanent magnets 255 and 256 may be installed.

Polarities of the first inner and outer auxiliary permanent magnets 251 and 252 and the second inner and outer auxiliary permanent magnets 255 and 256 may be opposite to the polarities of the inner and outer permanent magnets 220 and 230. Then, the direction of the magnetic force lines generated between the first inner and outer auxiliary permanent magnets 251 and 252 and the magnetic force lines generated between the second inner and outer auxiliary permanent magnets 255 and 256 are the inner permanent magnet 220 and the outer permanent magnet. The direction of the magnetic force lines generated between the 230 is the opposite. In this case, when the movable member 240 moves upward in FIG. 4, the first magnetic ring 242 is held by the magnetic force of the first inner and outer auxiliary permanent magnets 251 and 252 so that the coil is held. Even if the supply of current to the 241 is cut off, the mover 240 can continue to be moved upward. Similarly, when the mover 240 is moved downward in FIG. 4, the second magnetic ring 242 is held by the magnetic force of the second inner and outer auxiliary permanent magnets 251 and 252 to hold the coil 241. Even if the supply of current is cut off, the mover 240 can continue to be moved downward.

A plurality of nonmagnetic rods 271 are connected to one end (the upper end in the drawing) of the mover 240. A support 281 may be provided at an end of the plurality of nonmagnetic rods 271. A connection portion 281a is formed in the support 281, and a hole 281b is formed in the connection portion 281a. The connecting portion 281a is connected to a driven part such as a circuit breaker by the hole 281b.

A plurality of nonmagnetic rods 271 may also be connected to the other end (lower portion in the drawing) of the mover 240. And, the end of the plurality of nonmagnetic rods 272 may be provided with a support 282.

To prevent the end of the mover from colliding with the body 210 at the end of the axial movement of the mover 240, first and second buffering means 261 and 262 are provided at both end sides of the mover 240. It can be provided. In the present embodiment, the first and second buffering means 261 and 262 are composed of compression coil springs and are disposed between the inner permanent magnet 220 and the outer permanent magnet 230. The first and second buffering means 261 and 262 are not limited to the illustrated form. For example, a hydraulic or pneumatic damper can be installed outside the manipulator 100. In addition, instead of being installed inside the body 210 as in the present embodiment, it may be installed outside the body 210.

5A and 5B show the components shown in FIG. 4 in detail.

First, FIG. 5A shows specific shapes of the body 210, inner and outer permanent magnets 220 and 230, first inner and outer auxiliary permanent magnets 251 and 252, and second inner and outer auxiliary permanent magnets 255 and 256. . An annular chamber 211 is formed inside the body 210. Therefore, the chamber 211 has an inner wall surface 211a and an outer wall surface 211b. In order to form the annular chamber 211 in the body 210 and to assemble the inner and outer permanent magnets 220 and 230 and the mover 240, the body 210 is formed with a first body 210a. It may be divided into a second body 210b. In addition, an extension groove 212 for installing the aforementioned second buffering means 262 may be formed below the second body 210b. The extension groove 212 is formed when the length of the buffer means 262 is long. The plurality of through holes 213 formed at both ends of the body 210 are for passage of the rod 271 described above.

Polarities of the inner permanent magnets 220 and the outer permanent magnets 230 are arranged such that the lines of magnetic force flow in an arrow direction, that is, radially inward. In addition, polarities of the first inner and outer auxiliary permanent magnets 251 and 252 and the second inner and outer auxiliary permanent magnets 255 and 256 are arranged in opposite directions to the polarities of the inner and outer permanent magnets 220 and 230. . The inner and outer permanent magnets 220 and 230, the first inner and outer auxiliary permanent magnets 251 and 252, and the second inner and outer auxiliary permanent magnets 255 and 256 are shown in a continuous annular shape, but are divided into a plurality of radially. It may have a form.

FIG. 5B shows the concrete shape of the mover 240 and the first and second buffering means 261. As described above, the mover 240 has a shape in which the coil 241 and the first and second magnetic rings 242 and 243 are embedded in the insulator housing 244 to be integrated. The insulator housing 244 may be made of plastic. In this case, the coil 241 and the first and second magnetic rings 242 and 243 can be easily embedded by injection molding the housing 244 by an insert method. In addition, a plurality of grooves 245 for coupling the aforementioned rods 271 are formed at both ends of the mover 240. The rod 271 may be coupled to the groove 245 by a screwing method or the like. Meanwhile, when the first and second shock absorbing means 261 and 262 are installed inside the body 210 while being made of a compression spring, the compression springs 261 and 262 are the plurality of nonmagnetic rods 271. It may be installed in a manner surrounding the outside of the (272). A connection portion 281a is formed at the support 281 fixed to the ends of the rods 271. An actuating rod 280 is connected to the connecting portion 281a by the coupling of the hole 281b and the shaft 291. The actuating rod 290 is connected to a driven part such as a breaker and drives the driven part by the axial movement of the mover 240.

In the accompanying drawings, a circuit breaker having a manipulator 200 according to the second embodiment is shown. The circuit breaker illustrated in FIG. 6 differs from the circuit breaker described above in FIGS. 3A through 3C only, and the other parts have the same configuration. 6 shows when the breaker maintains the closed state.

As shown in FIG. 6, in the circuit breaker according to the present embodiment, an operation rod 290 is connected to the insulating operation rod 25 of the circuit breaker by a pin 170, and the operation rod 290 is the above-described operation unit. It is connected to the support 281 of the (200). Therefore, the insulation manipulation rod 25 is moved in the axial direction by the movement of the support 281 to perform the closed electrode operation and the opening operation. The support 281 is connected to the mover 240 and is driven according to the axial movement of the mover 240. Specifically, one end of the insulating operation rod 25 is connected to the connecting portion 281a of the support 281 by the shaft 291.

7A to 7D sequentially illustrate the operation of the manipulator 200 according to the second embodiment of the present invention. It is assumed that the manipulator 200 is applied to the breaker of FIG. 6.

FIG. 7A illustrates a state in which the mover 240 is moved upward to the top, that is, toward the first inner and outer auxiliary permanent magnets 251 and 252. Accordingly, the support 281 also moves upward as much as possible to push up the operation rod 290 (not shown) to maintain the breaker state. The direction of the magnetic lines of the inner and outer permanent magnets 220 and 230 is indicated by the arrow m1, and the direction of the magnetic lines of the second inner and outer auxiliary permanent magnets 255 and 256 by the arrow m2 and the first inner and outer auxiliary permanent magnets ( The directions of the lines of magnetic force of 251 and 252 are indicated by arrows m3. When the mover 240 is moved upward and the breaker maintains the closed state, no current is supplied to the coil 241 of the mover 240. The first magnetic ring 242 of the mover 240 serves as a flow path of magnetic lines generated in the inner and outer permanent magnets 220 and 230 and the first and outer auxiliary permanent magnets 251 and 252. At the same time, since the first magnetic ring 242 is already biased toward the first inner and outer auxiliary permanent magnets 251 and 252, the force (magnetic force) of the first inner and outer auxiliary permanent magnets 251 and 252 is caused by the magnetic field. 1 extends to the magnetic ring 242. This force acts as a holding force for holding the first magnetic ring 242 so that the movable member 240 can be continuously moved upward. Therefore, the breaker can keep the closed state continuously. At this time, the movable member 240 is not raised by a predetermined limit by the first shock absorbing means 261, but the holding force by the first inner and outer auxiliary permanent magnets 251 and 252 and the elasticity of the first shock absorbing means 261. It stops at the point where the return force is in equilibrium.

If an abnormality occurs in the power system, a current is supplied to the coil 241 to open the circuit breaker. Then, the repulsive force (axial force) acts on the relationship between the magnetic flux density generated between the inner and outer permanent magnets 220 and 230 and the current density generated by the coil 241, thereby moving the coil 241 downward. . That is, the mover 240 is moved downward. In this case, the current supplied to the coil 241 is sufficiently large to overcome the holding force held by the first magnetic ring 242 by the first inner and outer auxiliary permanent magnets 251 and 252 in the closed pole state. Supply.

When the mover 240 is lowered to the position shown in FIG. 7B, the axial movement force due to the repulsive force acting on the coil 241 and the inertial force that the mover 240 moves moves the first magnetic ring 242. Much greater than the pulling force up, so the mover 240 can continue to go down. In this case, the second magnetic ring 243 enters the second inner and outer auxiliary permanent magnets 255 and 256, and the magnetic lines generated from the inner and outer permanent magnets 220 and 230 and the second inner and outer auxiliary permanent magnets 255 and 256. To act as a flow path. Accordingly, the force of pulling the second inner and outer auxiliary permanent magnets 255 and 256 downwardly of the second magnetic ring 243 is gradually increased, and the mover 240 is accelerated by receiving a greater force downward. This is when the manipulator 200 exerts the greatest force. Therefore, it is desirable to design this time to coincide with the point at which the gas repulsion force (the force that should pull the popper cylinder 24 in the direction against the fixed piston 14 in Fig. 6) at the contact portion of the breaker becomes maximum.

As such, as the speed of the mover 240 continues to increase and passes the point shown in FIG. 7B, the current supplied to the coil 241 is quickly cut off. Then, the mover 240 is moved only by the inertia force and the force of the second inner and outer auxiliary permanent magnets 255 and 256 to pull the second magnetic ring 243 downward.

When the mover 240 is lowered to the position of FIG. 7C, the second inner and outer auxiliary permanent magnets 255 and 256 push the second magnetic ring 243 in the reverse direction (upward) in the moving direction. That is, from the time when the second magnetic ring 243 of the mover 240 passes through the axial middle point of the second inner and outer auxiliary permanent magnets 255 and 256, the force is directed in a direction opposite to the moving direction of the mover 240. This will cause the mover 240 to brake. At this point, since the opening operation has already been completed at the contact point of the breaker, the greater the braking force, the lower the lower part of the mover 240 hits the body 210 and the impact does not occur, thereby obtaining mechanical stabilization. However, since the mover 240 actually moves at a very large speed of 6 m / s or more, the mover 240 may collide with the body 210 through the second inner and outer auxiliary permanent magnets 255 and 256. In this case, the mover 240 may be stably decelerated by the second buffering means 262.

At the end of the operation in which the mover 240 moves downward, typically, the mover 240 is pushed in the opposite direction by the second buffering means 262 and the second inner and outer auxiliary permanent magnets 255 and 256. The force is larger than the holding force of holding the second magnetic ring 243 by the second inner and outer auxiliary permanent magnets 255 and 256.

Then, as shown in Figure 7d, the mover 240 is raised up by the restoring force of the second buffer means (262). As a result, the mover 240 stops at the point where the restoring force of the second buffering means 262 and the holding force of the second magnetic ring 230 by the second inner and outer auxiliary permanent magnets 255 and 256 are in equilibrium. do. This is the state in which breaker opening is completed.

8A to 10B show simulation test results when the electromagnet manipulator 200 according to the second embodiment of the present invention is applied to a breaker.

8A and 8B illustrate a mover having only inner and outer permanent magnets 220 and 230 without first and second magnetic rings 242 and 243 and auxiliary permanent magnets 251 and 252 and 255 and 256 in a manipulator according to a second embodiment of the present invention. 240 shows the force and current characteristics to move. The current continues to increase but the force for moving the mover 240 increases only initially and then decreases rapidly. However, the gas repulsion force of the breaker is maximized at the point where the operation of the mover is almost finished. Therefore, the manipulator model without the first and second magnetic rings 242 and 243 and the auxiliary permanent magnets 251 and 252 and 255 and 256 may have some difficulties in using for high pressure.

18 and 19 show the force and current characteristics when the manipulator has first and second magnetic rings 242 and 243 and auxiliary permanent magnets 251 and 252 and 255 and 256. In other words, when the permanent permanent magnets 251, 252 (255, 256) are installed above and below the outer permanent magnets 220 and 230, and the first and second magnetic rings 242 and 243 are installed above and below the coil 241, respectively. Shows. At this time, the phenomenon that the force is reduced by the movement of the mover 240, which was a problem in Figures 8a and 8b can be eliminated.

In FIG. 9A, graphs connected by square points represent the gas repulsion force of the breaker, graphs connected by triangle points represent the electromagnetic force (actuator thrust) generated in the pure manipulator, and graphs connected by the lozenge point win the gas repulsion force of the breaker. Represents the net force of the manipulator. The electromagnetic force generated by the pure manipulator must be greater than the gas repulsion force to speed up the mover. As described above with reference to FIGS. 8A and 8B, the electromagnetic force increases and then decreases in the initial moving section of the mover. However, in this graph, it can be seen that the force decreases slightly after passing the initial moving section of the mover again. In other words, when the force increases again, the magnetic ring of the mover approaches the auxiliary permanent magnet. Thus, the force on the mover is increased so that the speed of the overall mover does not decrease and continues to increase.

In FIG. 9A, the force due to the electromagnetic force is lower than the gas repulsion force in the 'K section'. However, at this time, since the inertial force of the mover is very large, as shown in the 'displacement' graph of FIG. 9B, the speed of the mover may not be reduced much but may still be large. For example, the preferred optimum design of the circuit breaker is such that the gas repulsion force is not greater than the electromagnetic force of the pure manipulator, but the maximum gas repulsion force is changed every time, so this problem is not serious if the inertia force of the mover is large enough.

Example 3

10A and 10B, an electromagnet manipulator 300 according to a third embodiment of the present invention is shown. The manipulator 300 according to the third embodiment has a form in which a plurality of manipulators (four in the drawing) according to the second embodiment are installed in one body 310. That is, a plurality of manipulation units 300a, 300b, 300c, and 300d may be installed in one body 310 made of a magnetic material. Each of the operation units 300a, 300b, 300c, and 300d has an inner and outer permanent magnets 220 and 230, a mover 240 having coils and first and second magnetic rings, similar to the manipulator of the second embodiment. And first and second inner and outer auxiliary permanent magnets 251 and 252 and 255 and 256, and first and second buffering means 261 and 262, respectively. A plurality of rods 271 and 272 are respectively connected to the plurality of movers 240, and the plurality of rods 271 and 272 are connected to one support 321 and 322. The upper support 321 is provided with a connecting portion (321a) for connecting to the breaker. The manipulator 300 according to the third embodiment of the present invention shows a preferred configuration in the case of increasing the number of manipulators according to the increase in the breaking capacity of the breaker.

On the other hand, in the manipulators according to the first to the third embodiment and the circuit breaker using the same, it is possible to maximize the efficiency of the manipulator by increasing the magnetic flux density using a superconducting magnet (or superconducting bulk magnet). Since the manipulators proposed in the present invention operate by the magnetic repulsion force generated from the magnetic flux density of the permanent magnet and the current density of the coil, the magnetic flux density increases when the superconducting magnet is used instead of the existing permanent magnet. Will have

As can be seen from the above equation, the energy E becomes proportional to the square of the magnetic flux density B. In addition, the magnetic flux density of permanent magnets of Nd series (neodymium series) with relatively high magnetic flux density is about 1.2 Tesla (T), whereas the magnetic flux density of the superconducting bulk magnets currently developed is 3T ~ 12T. As a result, it has a significantly higher magnetic flux density than a general permanent magnet. If a superconducting magnet having a magnetic flux density of about 3 Tesla (T) is applied, the magnetic flux density is about 3 times higher than that of a general permanent magnet having a magnetic flux density of about 1 Tesla (T), and the energy is about 9 It is doubled. Therefore, it can be seen that the force is increased about 9 times by applying the same amount of current density. As such, the permanent magnet can be replaced with a superconducting magnet to increase its efficiency. In the case of the manipulator according to the first embodiment, the efficiency can be improved by simply replacing the general permanent magnet with a superconducting magnet. However, considering the gas repulsion force as in the manipulator of Example 3, it is generated between the main permanent magnet (internal and external permanent magnet) and the auxiliary permanent magnet (first and second internal and external auxiliary permanent magnets) to cover the gas repulsion force. In case of using the power of the superconducting magnet, both the main permanent magnet and the secondary permanent magnet have problems. Superconducting magnets have a constant magnetic flux density like normal permanent magnets, but externally generated magnetic fields do not flow into the superconducting magnets due to the superconducting property (Meissner effect). Therefore, in the present invention, the magnetic field generated from the superconducting magnets flows through the general permanent magnets by using the super permanent magnets as the super permanent magnets and the secondary permanent magnets as the general permanent magnets, so that the ring-shaped magnetic parts of the control unit are superconducting magnets and the general permanent magnets. When placed at the boundary of the magnet it can be applied to a large force.

In the foregoing description, specific embodiments of the present invention shown in the accompanying drawings have been described in detail, but this is only an example and the protection scope of the present invention is not limited thereto. In addition, the embodiments of the present invention as described above can be variously modified and equivalent other embodiments by those of ordinary skill in the art within the technical spirit of the present invention, such modifications and equivalent other embodiments are It goes without saying that it belongs to the appended claims of the invention.

As described above, the manipulator according to the present invention has a structure for operating the mover by the magnetic field due to the permanent magnet and the electromagnetic repulsive force due to the current density of the coil, which can exhibit a large operating force and operation speed even with a small size and weight There is an advantage.

In addition, in the circuit breaker of the present invention, since the breaking operation is performed at a high force and a high speed, it can be particularly usefully applied to ultra-high pressure and high pressure circuit breakers, and there is an advantage that it can be easily applied even for low pressure.

Claims (29)

Hollow inner cylinder made of magnetic material; An outer cylinder made of a magnetic body, the outer cylinder being concentric with the inner cylinder and installed to maintain a predetermined distance radially outward from the inner cylinder; Inner and outer permanent magnets disposed in contact with the outer surface of the inner cylinder and the inner surface of the outer cylinder to maintain a predetermined distance from each other; A coil installed between the inner permanent magnet and the outer permanent magnet so as to be linearly moved in an axial direction; And The coil is installed at one end thereof, and when a current is supplied to the coil, a shaft is formed between the inner permanent magnet and the outer permanent magnet by the magnetic field caused by the inner and outer permanent magnets and the electromagnetic repulsion force caused by the current density of the coil. A manipulator using electromagnetic force, characterized in that it comprises a mover of a nonmagnetic material that linearly moves in the direction. The method of claim 1, The mover of the nonmagnetic material is A movable ring provided at one end of the coil and configured to linearly move in an axial direction between the inner permanent magnet and the outer permanent magnet; And A manipulator using electromagnetic force, characterized in that it comprises a moving shaft which is installed in the inner cylinder so that the linear movement is possible, and one end thereof is connected to the movable ring to move linearly in the axial direction by the movable ring. delete The method of claim 1, It is made of a magnetic body, the manipulator using an electromagnetic force, characterized in that it comprises a first, second end plate to induce a smooth flow of the magnetic field by blocking both ends of the inner cylinder and the outer cylinder. Hollow inner cylinder made of magnetic material; An outer cylinder made of a magnetic body, the outer cylinder being concentric with the inner cylinder and installed to maintain a predetermined distance radially outward from the inner cylinder; Inner and outer permanent magnets disposed in contact with the outer surface of the inner cylinder and the inner surface of the outer cylinder to maintain a predetermined distance from each other; A coil installed between the inner permanent magnet and the outer permanent magnet so as to be linearly moved in an axial direction; The coil is installed at an end thereof, and when a current is supplied to the coil, an axial direction is formed between the inner permanent magnet and the outer permanent magnet by the magnetic field caused by the inner and outer permanent magnets and the electromagnetic repulsion force caused by the current density of the coil. Mover of nonmagnetic material linearly moving; And And an insulation operation rod connected to the other end of the mover to linearly move by the mover to perform a closed pole operation and an opening action. delete The method of claim 5, The mover of the nonmagnetic material is A movable ring provided at one end of the coil and configured to linearly move in an axial direction between the inner permanent magnet and the outer permanent magnet; And A linear movement is provided inside the inner cylinder so that one end thereof is connected to the movable ring, and the other end thereof is connected to the insulation manipulation rod, so that the insulation manipulation rod is linearly moved in the axial direction by the movable ring. Breaker comprising a moving shaft for moving the. The method of claim 5, A circuit breaker comprising a first end and a second end plate formed of a magnetic material and blocking both end portions of the inner and outer cylinders to induce a smooth flow of the magnetic field. The method of claim 5, And a shock absorber provided at a portion of the movable end of the mover in the opening direction to absorb the impact force. The method of claim 9, The shock absorber is characterized in that the circuit consisting of a compression coil spring. A body of magnetic material having an annular chamber formed therein; An annular inner permanent magnet and an outer permanent magnet installed concentrically by maintaining a predetermined interval in the radial direction inside the chamber of the body; And It has an annular coil, which is installed to allow linear movement in the axial direction between the inner permanent magnet and the inner permanent magnet, and when the current is supplied to the coil, the magnetic field and the coil by the inner permanent magnet and the outer permanent magnet And a mover which linearly moves in the axial direction between the inner permanent magnet and the outer permanent magnet by an electromagnetic repulsive force due to the current density of the manipulator. The method of claim 11, Both ends of the inner and outer permanent magnets are provided with an annular first inner and outer auxiliary permanent magnet and a second inner and outer auxiliary permanent magnet, respectively. And said mover has an annular first magnetic ring and a second magnetic ring disposed at both ends of said coil so as to be integrated with said coil. The method of claim 12, The polarity of the first inner and outer auxiliary permanent magnets and the second inner and outer auxiliary permanent magnets are opposite to the polarities of the inner and outer permanent magnets, the manipulator using electromagnetic force. delete The method of claim 12, And the coil and the first and second magnetic rings are embedded in the insulator housing and integrated therein. The method of claim 15, The insulator housing is a manipulator using electromagnetic force, characterized in that made of plastic. The method of claim 11, And first and second buffering means are provided at both ends of the mover to prevent the end of the mover from colliding with the body at the end of the mover in the axial direction. The method of claim 17, The first and second buffering means is an electromagnet manipulator, characterized in that made of a compression coil spring. The method of claim 17, The first and second buffering means is made of a compression coil spring, the manipulator using an electromagnetic force, characterized in that disposed between the inner permanent magnet and the outer permanent magnet. The method of claim 11, One end of the mover is connected to a plurality of nonmagnetic rods, the end of the plurality of nonmagnetic rods, the manipulator using an electromagnetic force, characterized in that a support for connecting to the driven portion is provided. A body of magnetic material having an annular chamber formed therein; An annular inner permanent magnet and an outer permanent magnet installed concentrically by maintaining a predetermined interval in the radial direction inside the chamber of the body; It has an annular coil, which is installed to allow linear movement in the axial direction between the inner permanent magnet and the inner permanent magnet, and when the current is supplied to the coil, the magnetic field and the coil by the inner permanent magnet and the outer permanent magnet A movable member linearly moving in the axial direction between the inner permanent magnet and the outer permanent magnet by the electromagnetic repulsive force due to the current density of the magnet; And And an insulation operation rod connected to the mover to linearly move by the mover to perform the closed and open operation. The method of claim 21, Both ends of the inner and outer permanent magnets are provided with an annular first inner and outer auxiliary permanent magnet and a second inner and outer auxiliary permanent magnet, respectively. And the movable member has an annular first magnetic ring and a second magnetic ring disposed at both end portions of the coil thereof so as to be integrated with the coil. delete A plurality of electromagnet control unit is installed in one body made of magnetic material, Each of the plurality of operation units, An annular inner permanent magnet and an outer permanent magnet installed concentrically by maintaining a constant distance in the radial direction; It has an annular coil, which is installed to allow linear movement in the axial direction between the inner permanent magnet and the inner permanent magnet, and when the current is supplied to the coil, the magnetic field and the coil by the inner permanent magnet and the outer permanent magnet A movable member linearly moving in the axial direction between the inner permanent magnet and the outer permanent magnet by the electromagnetic repulsive force due to the current density of the magnet; A plurality of rods connected to the plurality of movers; And Manipulator using an electromagnetic force comprising a support for connecting the ends of the plurality of rods into one. The method of claim 24, Both ends of the inner and outer permanent magnets are provided with an annular first inner and outer auxiliary permanent magnet and a second inner and outer auxiliary permanent magnet, respectively. And said mover has an annular first magnetic ring and a second magnetic ring disposed at both ends of said coil so as to be integrated with said coil. delete A plurality of electromagnet control unit is installed in one body made of magnetic material, Each of the plurality of operation units, An annular inner permanent magnet and an outer permanent magnet installed concentrically by maintaining a constant distance in the radial direction; It has an annular coil, which is installed to allow linear movement in the axial direction between the inner permanent magnet and the inner permanent magnet, and when the current is supplied to the coil, the magnetic field and the coil by the inner permanent magnet and the outer permanent magnet A movable member linearly moving in the axial direction between the inner permanent magnet and the outer permanent magnet by the electromagnetic repulsive force due to the current density of the magnet; A plurality of rods connected to the plurality of movers; And It includes a support for connecting the ends of the plurality of rods in one, And an insulating operation rod connected to the support to linearly move by the plurality of movers to perform the closed and open operation. The method of claim 27, Both ends of the inner and outer permanent magnets are provided with an annular first inner and outer auxiliary permanent magnet and a second inner and outer auxiliary permanent magnet, respectively. And the movable member has an annular first magnetic ring and a second magnetic ring disposed at both end portions of the coil thereof so as to be integrated with the coil. delete

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