KR102194953B1 - Electrodes for controlling breaker switchgear of electric power equipment - Google Patents

Abstract

The present invention relates to an electrode for a switch control device of a power control facility that can be used for a switch provided in a power control facility such as a solar panel, as the electrode is coated with carbon and carbon nanostructures and has high durability and high conductivity. will be. The present invention is an electrode used in a switch to determine whether to open or close a power circuit according to a rotation angle of a lever member, wherein the electrode is a nano coating layer including a first carbon coating layer, a carbon nanostructure layer, and a second carbon coating layer on a surface. It provides an electrode for a power control equipment switchgear control device, characterized in that the formed.

Description

Electrodes for controlling breaker switchgear of electric power equipment

The present invention relates to an electrode for a switch control device of a power control facility, and more particularly, by coating a carbon and carbon nanostructure on the electrode, and having high durability and high conductivity, it is provided in a power control facility such as a solar panel It relates to an electrode for a switch control device of a power control facility that can be used in the switchgear.

In general, a solar power generation system converts light energy into electrical energy, and includes a solar panel (module) that converts light energy into electrical energy, and an inverter that converts DC power produced from the solar panel into AC power. do.

In addition, by adding a solar connection panel that facilitates the connection of many wirings between the solar cell array and the inverter and performs various protection functions, it is possible to connect an appropriate array of parallel groups according to the solar cell array configuration and capacity. It connects cables to inverters, organizes the connection of multiple solar cell arrays in an easy-to-understand manner, and separates circuits during maintenance and inspection to facilitate inspection work.

In addition, as shown in FIG. 1, the solar connection panel includes a switch 11, a lightning and surge protection element 12, a terminal block, and a fuse 13, and is used between the solar cell module and the inverter. It is a device that connects the generated DC power in series/parallel and collects the power required by the system. It protects the inverter and prevents collisions between modules and protects them.

In such a solar panel, a plurality of electrodes are connected through wires, and each solar panel is controlled by opening and closing the electrodes. However, the solar connection panel is integrated with a plurality of electrodes, and requires a high current conduction rate and high durability due to the characteristic of controlling a high current. However, in the case of a conventional switch, as shown in FIG. 1, since it has a manual control structure and is manufactured with a general copper electrode, damage due to heat generation is severe and power loss is also high.

(0001) Korean Patent Registration No. 10-1376548

In order to solve the above-described problem, the present invention has high durability and high conductivity by coating carbon and carbon nanostructures on electrodes, and thus power control that can be used for switchgear provided in power control facilities such as solar panel It is intended to provide an electrode for a facility switch control device.

In order to solve the above-described problem, the present invention provides an electrode used in a switch for determining whether to open or close a power circuit according to a rotation angle of a lever member, wherein the electrode includes a first carbon coating layer, a carbon nanostructure layer, and It provides an electrode for a power control facility switchgear control device, characterized in that the nano-coating layer including a 2 carbon coating layer is formed.

The first carbon coating layer or the second carbon coating layer may include nickel (Ni), chromium (Cr), or tungsten (W) nanoparticles.

The first carbon coating layer or the second carbon coating layer may include 5 to 20% by weight of nickel (Ni), chromium (Cr), or tungsten (W) nanoparticles.

The carbon nanostructure layer may include a carbon nanotree.

The first carbon coating layer or the second carbon coating layer is formed by a radio wave-magnetron sputtering process, and the carbon nanostructure layer is formed by a microwave-plasma chemical vapor deposition (Microwave-PECVD) process. I can.

The first carbon coating layer and the second carbon coating layer may have a thickness of 50 nm to 100 nm, and the nanostructure layer may have a thickness of 50 to 80 nm.

The electrode may have an electrical conductivity of 0.03 to 0.06 S/m.

The present invention also provides a switch control device for a power control facility including the electrode for the switch control device of the power control facility.

The switch control device for the power control facility includes a gear box that rotates a drive shaft through a motor rotational force; It has a lever member coupled to one side of the drive shaft and rotated by the drive shaft, and connects and closes the electrode for the power control facility switchgear control device according to any one of claims 1 to 8 according to the rotation angle of the lever member. A switch to determine whether to open or close the power circuit; A rotating plate implemented to have a variable radius in a radial direction, coupled to the other side of the drive shaft to rotate in the same pattern as the lever member; First and second relay elements that are distributedly arranged so as to be equally spaced apart from the rotational center axis of the rotational plate, and vary an output signal value according to the rotational angle of the rotational plate; In response to a control command transmitted from the outside, the gearbox is operated and controlled, and a processor for checking and notifying whether the switch is normally driven based on output signal values of the first and second relay elements may be included.

As the electrode for the switch control device of the power control facility according to the present invention has a carbon coating layer including a carbon nanostructure on its surface, it can have high durability and high electrical conductivity at the same time, so that a large amount of power moves, and solar power that is frequently opened and closed. It can be usefully used as an electrode of a switch provided in a power control facility such as a connection board.

1 is a diagram showing an example of a solar connection panel.
2 is a view for explaining a switch control apparatus for a power control facility according to an embodiment of the present invention.
3 is a view showing an example of a gear box according to an embodiment of the present invention.
4 to 5 are diagrams showing examples of implementing a rotating plate and a relay device according to an embodiment of the present invention.
6 is a view showing a pattern of a rotational plate rotation angle change according to a change in the state of the switch according to an embodiment of the present invention.
7 to 9 are views for explaining a method of controlling a switch for a power control facility according to an embodiment of the present invention.
10 is a photograph of observing the surface and cross section of a carbon coating layer including metal nanoparticles according to an embodiment of the present invention.
11 is a schematic diagram of a highly durable contact point using a carbon nano tree according to an embodiment of the present invention.
12 is a schematic diagram showing an RF-magnetron evaporator according to an embodiment of the present invention.
13 is a schematic diagram of microwave-PECVD according to an embodiment of the present invention.
14 schematically shows the order of electrode coating according to an embodiment of the present invention.
15 is a diagram showing an actual application of an electrode to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted. Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components, unless otherwise stated.

The present invention is intended to illustrate specific embodiments and to be described in detail in the detailed description, since various transformations can be applied and various embodiments can be provided. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all conversions, equivalents, or substitutes included in the spirit and scope of the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present invention, terms such as include or have are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination of them described in the specification, and one or more other features, numbers, and steps. It is to be understood that it does not preclude the possibility of the presence or addition of, operations, components, parts, or combinations thereof.

The present invention is an electrode used in a switch to determine whether to open or close a power circuit according to a rotation angle of a lever member, wherein the electrode is a nano coating layer including a first carbon coating layer, a carbon nanostructure layer, and a second carbon coating layer on a surface. It relates to an electrode for a power control equipment switchgear control device, characterized in that formed (see Fig. 14).

The electrode is a device that determines the connection and short circuit of power through contact and separation, and may be manufactured in a circular or flat shape. The electrode may be manufactured by selecting without limitation any material having high electrical conductivity, but may be preferably made of iron, aluminum, copper or tungsten, more preferably of copper. Copper has higher electrical conductivity than other metals (5X10 ⁵ S/m), and has high malleability and ductility, so it is easy to process and has excellent durability, so it is easy to use as a key electrode. Of course, gold or silver may have superior physical properties compared to copper, but it is most preferable to use copper because it is a noble metal and increases the cost during manufacture.

The first carbon coating layer is positioned between the electrode and the carbon nanostructure layer to serve as a base on which the carbon nanostructure layer can be grown and at the same time transmit power supplied to the electrode to the carbon nanostructure layer. When the carbon nanostructure layer is formed on the electrode without the first carbon coating layer, the carbon nanostructure (especially the carbon nanotree structure) is not formed, and the adhesion between the carbon nanostructure and the electrode decreases. Can be separated.

The first carbon coating layer may be deposited by an RF-magnetron sputtering process. In the case of DC sputtering, which is generally used, since deposition is performed using a DC current, deposition may not be possible if the object is an oxide or an insulator. In the case of the present invention, although the object is a conductor, it is preferable to deposit using an RF-magnetron sputtering process in order to prevent surface damage due to direct current. In particular, as most of the plasma required for deposition is collected on the surface of the object by using the strong magnetic field of the magnetron, the ionization rate is very high and the deposition rate is fast, so in the present invention, a radio wave-magnetron sputtering process is used. (See Fig. 12).

The first carbon coating layer may include nickel (Ni), chromium (Cr), or tungsten (W) nanoparticles. When only carbon is deposited on the first carbon coating layer, electrical conductivity may decrease. In the case of carbon, a two-dimensional structure parallel to the substrate is mainly formed during deposition, and the two-dimensional structure of carbon has high electrical conductivity in a plane, but conductivity may decrease in the vertical direction of the plane. I can. Accordingly, when forming the first carbon coating layer, it is preferable to simultaneously deposit nickel (Ni), chromium (Cr), or tungsten (W) nanoparticles to increase electrical conductivity. At this time, the first carbon coating layer may contain 5 to 20% by weight of nanoparticles, and when the amount of nanoparticles is less than 5% by weight, electrical conductivity may decrease due to a low content of nanoparticles, and in excess of 50% by weight. When included, the amount of carbon exposed to the surface may be reduced, so that a carbon nanostructure layer growing on the surface of the carbon coating layer may not be formed. Specifically, the ratio of the carbon and nickel (Ni), chromium (Cr) or tungsten (W) nanoparticles is C: NI = 3.75: 1, C: Cr = 3.75: 1, C: W = 1: 1. desirable.

In addition, the thickness of the first carbon coating layer is preferably 50nm ~ 100nm, preferably 60 ~ 80nm. When the thickness of the first carbon nanocoating layer is less than 50 nm, the adhesion of the carbon nanostructure layer may be weakened, so that the durability of the electrode may decrease, and when the thickness exceeds 100 nm, electrical conductivity may decrease (see FIG. 10).

The carbon nanostructure layer is a layer formed in a direction perpendicular to the electrode so that power supplied to the electrode is easily transferred to another electrode, and may be a vertically aligned carbon nanotube or a carbon nanotree. , Preferably it may be a carbon nano-tri. In the case of the carbon nanotree, the carbon nanotube as a basic structure refers to a structure in which several branches are formed, such as a tree branch, and has high conductivity in the longitudinal direction and has a large specific surface area, so that contact with other layers is possible. It is easy and can have high conductivity compared to the existing carbon nanotubes (see FIG. 11).

In the present invention, the carbon nanotree is a carbon structure synthesized in the form of a nano-sized tree. In particular, the carbon nanotree has the advantages of high electrical conductivity and electron affinity of the nano-sized carbon structure, and Since it has the highest surface density among structures, it is highly likely to be used as a next-generation electrode material. Therefore, in the present invention, high electrical conductivity can be expected by forming a carbon nanostructure layer using this.

The carbon nanostructure layer may be formed by a microwave-plasma chemical vapor deposition (Microwave-PECVD) process. In the general chemical vapor deposition method, gases injected into the reactor are deposited through a chemical reaction on a heated substrate, but in the present invention, it is carried out using PECVD (Plasma Enhanced Chemical Vapor Deposition), which facilitates this reaction using plasma. can do. In particular, it is more preferable to use a microwave-PECVD process showing higher efficiency by directing plasma near the target electrode surface by adding a microwave facility to the existing general PECVD equipment (see FIG. 13).

The nanostructure layer may have a thickness of 50 to 80 nm. When the thickness of the nanostructure layer is less than 50nm, the formation of the carbon nanotree structure cannot be circular as the thickness of the nanostructure becomes thinner, so the phenomenon of lowering the electrical conductivity cannot be used, and when it exceeds 80nm, the durability of the nanostructure layer This may shorten the life of the electrode.

The second carbon coating layer is a layer positioned at the outermost side of the electrode and serves to protect the carbon nanostructure and at the same time transmit power input from the carbon nanostructure to another electrode. The second carbon coating layer is preferably made of the same material and thickness as the first carbon coating layer, but may contain different nanoparticles or have a different thickness depending on the purpose of use and environment of the electrode.

The electrode may have high electrical conductivity and high durability compared to the conventional electrode. Accordingly, the electrode may have an electrical conductivity of 0.03 to 0.06 S/mS/m. If the electrical conductivity of the electrode is less than 0.03 S/m, properties different from that of the existing electrode do not appear, and the value of use as an electrode may be degraded.

The present invention also provides a switch control device for a power control facility including the electrode for the switch control device of the power control facility.

The switch control device for the power control facility includes a gear box for rotating a drive shaft through a motor rotational force; It has a lever member coupled to one side of the drive shaft and rotated by the drive shaft, and connects and closes the electrode for the power control facility switchgear control device according to any one of claims 1 to 8 according to the rotation angle of the lever member. A switch to determine whether to open or close the power circuit; A rotating plate that is implemented to have a variable radius in a radial direction and is coupled to the other side of the drive shaft to rotate in the same pattern as the lever member; First and second relay elements that are distributed and arranged so as to be spaced apart from the rotational center axis of the rotating plate by the same distance, and vary an output signal value according to a rotation angle of the rotating plate; In response to a control command transmitted from the outside, the gearbox is operated and controlled, and a processor for checking and notifying whether the switch is normally driven based on output signal values of the first and second relay elements may be included.

Hereinafter, the present invention will be described in detail through the operation and control process of the switch.

2 is a view for explaining a switch control apparatus for a power control facility according to an embodiment of the present invention.

As shown in FIG. 2, the switch control device 100 of the present invention includes a gear box 110, a switch 120, a rotating plate 130, first and second relay elements 141 and 142, a processor 150, and the like. Includes.

The gear box 110 is composed of n (n is a natural number of 2 or more) gears 111, 112, and 113 having different diameters as shown in FIG. It is a device that rotates its own drive shaft 115 by decelerating by as much.

The switch 120 is coupled to one side of the drive shaft 115 of the gear box 110, has a lever member rotated by the drive shaft 115 of the gear box 110, and a power circuit according to the rotation angle of the lever member It is a device that determines whether to open or close. Of course, the lever member at this time is implemented in the shape of a handle, so that the user can directly rotate it to determine whether to open or close the power circuit.

The rotating plate 130 is coupled to the other side of the drive shaft 115 of the gear box 110 and rotates in the same pattern as the lever member of the switch 120. In particular, the rotating plate 130 is implemented in a shape having a variable radius in the radial direction.

The first and second relay elements 141 and 142 are distributedly installed so as to be equally spaced apart from the central axis of the rotating plate 130, and output signal values differently according to the rotation angle of the rotating plate 130.

That is, the present invention further includes the rotating plate 130 and the first and second relay elements 141 and 142 as shown in FIG. 4, and through these, it is possible to indirectly measure the current state of the switch.

For example, the first and second relay elements 141 and 142 of the present invention output S1 = L and S2 = H when the rotation angle θ of the rotating plate 130 is 0 degrees, as shown in FIG. 5, At 90 degrees, S1=H and S2=H are output, at 180 degrees, S1=H and S2=L, and at 270 degrees, S1=L and S2=H can be output. Through the output signal values of the second relay elements 141 and 142, it is possible to inversely estimate the rotation angle of the rotating plate 130 or the lever member, and furthermore, whether the switch is open or closed.

Subsequently, the processor 150 receives a control command generated and transmitted by an external device such as a user operation panel or a central control room, and operates the gear box 110 in response thereto, so that the switch 120 is It can be automatically opened or closed by the rotational force provided by (110).

In addition, by indirectly measuring the current state of the switch 120 based on the output signals of the first and second relay elements 141 and 142, it is also possible to determine whether the switch 120 is normally driven from this.

6 is a view showing a pattern of a rotational plate rotation angle change according to a change in the state of the switch according to an embodiment of the present invention.

First, as shown in (a) of FIG. 6, when the switch is changed from the closed state to the open state, the rotation angle of the rotating plate is continuously changed from 0 degrees to 180 degrees, and the first and second relay elements 141 and 142 The output signal values are sequentially changed to (S1=L, S2=H), (S1=H, S2=H), and (S1=H, S2=L).

On the other hand, when the switch is changed from the open state to the open state as shown in (b) of FIG. 6, the rotation angle of the rotating plate is continuously changed from 180 degrees to 0 degrees, and accordingly, the first and second relay elements 141 and 142 The output signal value is sequentially changed to (S1=H, S2=L), (S1=L, S2=L), (S1=L, S2=H).

If the switchgear operates normally, the first and second relay elements 141 and 142 necessarily generate and output output signal values that change in the pattern of FIG. 6A or 6B.

On the other hand, if the switch fails, the switch lever does not move, or the switch lever does not rotate in the original direction, the first and second relay elements 141 and 142 generate and output output signal values that do not follow the change pattern. .

In addition, when the performance of the switch is deteriorated, the rotation speed of the switch may be abnormally slow, and as a result, the rate of change of the output signal value of the first and second relay elements 141 and 142 is abnormally slowed.

Accordingly, in the present invention, the rotating plate 130 and the first and second relay elements 141 and 142 are additionally provided, and through these, the current state of the switch is indirectly measured, and furthermore, it is possible to check and report whether or not a failure or deterioration has occurred .

7 to 9 are views for explaining a method of controlling a switch for a power control facility according to an embodiment of the present invention.

First, when initial power is applied to the switch control device (S1), the processor 150 checks the current state of the switch 120 through the first and second relay elements 141 and 142 (S2).

If the switch 120 is in a floating state rather than an open or closed state (S1=S2=L or S1=S2=H), the motor of the gearbox 110 is operated to enter the switch 120 into a closed state. (S1=L, S2=H) (S3).

In this state, when an open/closer open command is remotely transmitted from an external device (S4), the processor 150 starts to drive the motor of the gear box 110 so that the open/closed open/closer passes through the floating state ( S5).

At the same time as step S5 is performed, the change in the switch state is indirectly measured through the output signal values of the first and second relay elements 141 and 142 (S6 to S9). In other words, it is checked whether the switch from the closed state has changed from the floating state to the open state (S6, S7), and at the same time, the first time from the closed state to the floating state and from the floating state to the open state. Count the second time of (S8, S9).

If the state of the switch does not change at all, it is confirmed and notified that the switch is in complete failure, and if at least one of the first time and the second time is greater than the preset time, the switch is confirmed and notified that the switch is in a deteriorated state (S10). ).

On the other hand, when the switch normally enters the open state through the floating state, the processor 150 confirms that the switch is in a normal operation state and immediately terminates the driving of the gearbox motor (S11).

In addition, while maintaining the current state of the switch, the first and second relay elements 141 and 142 are additionally checked at a preset period (S12), and whether or not a state change occurs through this (S13).

If the state of the switch is changed even though an external command is not separately received, an alarm is generated and output to notify the external device or system administrator, so that the related follow-up measures can be immediately processed (S14).

In the same manner, when an open/close command is input in the open/closed state (S15), the processor 150 drives the motor of the gearbox 110 again so that the open/closed open/closed state passes through the floating state ( S16).

Also, it is checked whether the open switch has changed from the open state to the closed state through the floating state (S17, S18), and the third time from the open state to the floating state and the third time from the floating state to the closed state. Count 4 hours (S19, S20).

And if the state of the switch does not change at all, it is confirmed and notified that the switch is in complete failure, and if at least one of the third time or the fourth time is greater than the preset time, it is confirmed and notified that the switch is in a deteriorated state (S21). .

On the other hand, when the switch normally enters the closed state through the floating state, the processor 150 confirms that the switch is in a normal operating state and immediately terminates the driving of the gear box motor (S22).

Even at this time, while maintaining the current state of the switch, the first and second relay elements 141 and 142 are additionally checked at a preset period (S23), and whether or not a state change occurs through this (S24).

If the state of the switch is changed even though an external command is not separately received, an alarm to notify the external device or system administrator is generated and output, so that the related follow-up measures can be immediately processed (S25).

As described above, specific parts of the present invention have been described in detail, and it will be apparent to those of ordinary skill in the art that these specific techniques are only preferred embodiments, and the scope of the present invention is not limited thereby. will be. Accordingly, it will be said that the substantial scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

In the electrode used in the switch to determine whether to open or close the power circuit according to the rotation angle of the lever member,
The electrode includes a first carbon coating layer, a carbon nanostructure layer, and a second carbon coating layer on the surface, and the carbon nanostructure layer is formed in a direction perpendicular to the electrode, and is distinguished from the first carbon coating layer and the second carbon coating layer. Electrode for a power control equipment switchgear control device, characterized in that the separate and independent layer.
The method of claim 1,
The first carbon coating layer or the second carbon coating layer comprises nickel (Ni), chromium (Cr), or tungsten (W) nanoparticles.
The method of claim 2,
The first carbon coating layer or the second carbon coating layer comprises 5 to 20% by weight of nickel (Ni), chromium (Cr) or tungsten (W) nanoparticles.
The method of claim 1,
The carbon nanostructure layer is an electrode for a power control facility switchgear control device, characterized in that it comprises a carbon nanotree (Carbon nanotree).
The method of claim 1,
The first carbon coating layer or the second carbon coating layer is formed by a radio wave-magnetron sputtering process, and the carbon nanostructure layer is formed by a microwave-plasma chemical vapor deposition (Microwave-PECVD) process. Electrode for a power control facility switchgear control device, characterized in that.
The method of claim 1,
The first carbon coating layer and the second carbon coating layer have a thickness of 50 nm to 100 nm, and the carbon nanostructure layer has a thickness of 50 to 80 nm.
The method of claim 1,
The electrode for a power control facility switchgear control device, characterized in that the electrical conductivity of the electrode is 0.03 ~ 0.06S / m.
A switch control device for a power control facility comprising an electrode for the switch control device of the power control facility according to any one of claims 1 to 7.
The method of claim 8,
The switch control device for the power control facility,
A gear box that rotates the drive shaft through motor rotational force;
A switch that has a lever member that is coupled to one side of the drive shaft and rotates by the drive shaft, and determines whether to open or close a power circuit by connecting and closing an electrode for a power control facility switch control device according to the rotation angle of the lever member ;
A rotating plate that is implemented to have a variable radius in a radial direction and is coupled to the other side of the drive shaft to rotate in the same pattern as the lever member;
First and second relay elements that are distributed and arranged so as to be spaced apart from the rotational center axis of the rotating plate by the same distance, and vary an output signal value according to a rotation angle of the rotating plate;
A processor that controls the operation of the gear box in response to a control command transmitted from an external device, and checks and reports whether the switch is normally driven based on output signal values of the first and second relay elements;
Switchgear control device for power control facilities comprising a.

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