KR20230030898A - Switchgear panel, busduct, transformer having cooling fan operated by electromagnetic energy harvester - Google Patents

Abstract

The present invention relates to a switch board, a bus duct, and a transformer having a cooling fan operated by an electromagnetic energy harvester, which produces electromagnetic energy from a busbar and operates the cooling fan using the electromagnetic energy to forcibly circulate air inside a main body. The power equipment (the switch board, the bus duct, and the transformer) comprises: a main body; a plurality of busbars which are provided inside the main body; an insulating tube surrounding the outer surface of the busbars; an energy collection part coupled to the busbars through the insulating tube to collect electromagnetic energy generated from the busbars; a circuit board connected to the energy collection part; and a cooling fan mounted inside the main body and operating by being connected to the circuit board. The main body is made in a sealed form, the energy collection part includes a magnetic energy collector including a high-permeability coil focusing the leakage magnetic field around the busbars. The energy collection part is insulated from the busbars by being in non-contact with the busbars by the insulating tube, and the cooling fan connected to the circuit board inside the main body is operated by the electromagnetic energy collected by the energy collection part, thereby forcibly circulating air inside the main body.

Description

Switchgear, bus duct, transformer equipped with cooling fan operated by electromagnetic energy harvester { SWITCHGEAR PANEL, BUSDUCT, TRANSFORMER HAVING COOLING FAN OPERATED BY ELECTROMAGNETIC ENERGY HARVESTER }

The present invention relates to a switchgear, a bus duct, and a transformer equipped with a cooling fan operated by an electromagnetic energy harvester, and in particular, generates electromagnetic energy from a busbar and operates a cooling fan using the generated electromagnetic energy to forcibly circulate air inside the main body. It relates to a switchgear, bus duct, and transformer equipped with a cooling fan operated by an electromagnetic energy harvester that can be used.

The switchboard receives extra-high voltage of 154kV from KEPCO and steps it down to a high voltage of 6.6kV, or directly receives extra-high voltage of 22.9kV and distributes power to low voltage panels of 380V or 440V.

Recently, there is an increasing demand for a function capable of diagnosing and monitoring the internal state of electric power facilities such as switchboards and transformers to which IoT technology is applied for the purpose of reducing greenhouse gases and preventing electrical accidents in real time.

In order to apply IoT technology to existing power facilities, users install physical and chemical sensors to be diagnosed, such as temperature, humidity, current, voltage, vibration, light, sound, pressure, gas, and infrared sensors, in a desired location, and wirelessly It should be possible to display and record the measured values on the screen by transmitting them in real time through communication.

In order to implement a smart power facility, it is advantageous to have more types and numbers of sensors, but since a large amount of batteries are used to drive the sensors, replacing batteries every 1.5 years is not realistic.

On the other hand, the cubicle switchboard has a closed enclosure structure to block the inflow of materials from the external rotor.

In this structure, when a large current is applied, the air temperature around the busbar at the top of the enclosure is heated, resulting in a large temperature difference between the busbar at the top and the busbar at the bottom. To solve this problem, a cooling fan is installed inside the enclosure to heat the air. must be forced to circulate to minimize the air temperature difference between the upper and lower parts.

However, since separate control lines and power lines must be connected to drive the cooling fan, it is difficult to apply it due to insulation problems and cumbersome wiring work.

Registered Patent 10-1546397

The present invention is to solve the above problems, and electromagnetic energy that can solve insulation problems and wiring problems by operating a cooling fan forcibly circulating air inside a sealed body (enclosure) through self-generation without an external power source. Its purpose is to provide a switchgear, bus duct, and transformer equipped with a cooling fan operated by a harvester.

In order to achieve the above object, a switchboard, a bus duct, and a transformer equipped with a cooling fan operated by the electromagnetic energy harvester of the present invention include a body of a power facility; a plurality of busbars disposed inside the main body; an insulation tube surrounding an outer circumferential surface of the busbar; an energy collecting unit coupled to the busbar with the insulation tube interposed therebetween to collect electromagnetic energy generated from the busbar; a circuit board connected to the energy collecting unit; A cooling fan mounted inside the main body and operated by being connected to the circuit board; the main body is made of a sealed type, and the energy collecting unit is a high permeability coil that focuses the leakage magnetic field around the busbar. It is made of a magnetic energy collecting part comprising a, the energy collecting part is insulated by non-contact with the bus bar by the insulating tube, and the cooling fan connected to the circuit board inside the main body is electromagnetic energy collected by the energy collecting part. It is characterized in that the air inside the main body is forcibly circulated while being operated by.

The magnetic energy collection unit may include a block housing made of an insulator material disposed adjacent to the bus bar with the insulation tube interposed therebetween; a coil disposed inside the block housing and connected to the circuit board; a core penetrating the coil; a ferromagnetic band that passes through the block housing and is arranged to surround the circumference of the bus bar and constitutes a closed magnetic circuit; A fastening band for bringing the ferromagnetic band into close contact with the bus bar while surrounding the ferromagnetic band.

Alternatively, the magnetic energy collection unit may include a block housing made of an insulator material disposed adjacent to the bus bar with the insulation tube interposed therebetween; a coil disposed inside the block housing and connected to the circuit board; a ferromagnetic band that passes through the block housing and is arranged to surround the circumference of the bus bar and constitutes a closed magnetic circuit; A fastening band that surrounds the ferromagnetic band and brings the ferromagnetic band into close contact with the bus bar, but the ferromagnetic band may pass through the coil to form a core.

The energy collecting unit further includes an electric energy collecting unit that generates electric energy by concentrating the leakage electric field around the busbar, and the electric energy collecting unit is connected to an insulator connected to the busbar while supporting the busbar. , The electric energy collection part is short-circuited together through the ground-side connection part of the insulator.

The electrical energy collection unit, an insulating housing made of insulating material; An electrostatic induction charge collecting plate made of metal disposed on the exposed surface of the insulating housing and in contact with the insulating tube, wherein the circuit board has one end connected to the charge collecting plate and the other end connected to the insulator.

The insulating housing may include a first insulating housing disposed to face a wide surface of the bus bar; a second insulating housing disposed to face the other wide surface of the bus bar; A coupling member for bringing the first insulation housing and the second insulation housing into close contact with the bus bar while combining the first insulation housing and the second insulation housing, wherein the charge collecting plate is of the first insulation housing. a first charge collecting plate coupled to one surface and in close contact with one surface of the bus bar with the insulating tube interposed therebetween; A second charge collecting plate coupled to one surface of the second insulating housing and in close contact with the other surface of the bus bar with the insulating tube interposed therebetween; the first charge collecting plate and the second charge collecting plate are electrically connected to each other, , Any one of the first charge collecting plate and the second charge collecting plate is connected to the circuit board.

The first insulating housing may include a first contact body on which the first charge collecting plate is mounted on one surface exposed to the outside; a first coupling support formed on one side of the first contact body, and the second insulating housing includes a second contact body on which the second charge collecting plate is mounted on one surface exposed to the outside; a second coupling support portion formed on one side of the second contact body, wherein an insertion protrusion is formed in the first coupling support portion in a direction in which the second coupling support portion is disposed, and the insertion protrusion is formed on the second coupling support portion. An insertion groove is formed, the fastening member is coupled through the first coupling support portion and the second coupling support portion, and the insertion protrusion is inserted into the insertion groove by the coupling force of the fastening member, and the first electric charge is inserted into the insertion groove. The dust collecting plate and the second charge collecting plate are closely attached to the insulating tube.

a temperature sensor for measuring the internal temperature of the main body; A control unit controlling whether the cooling fan operates according to the value measured by the temperature sensor; wherein the cooling fan is mounted on the upper part of the main body at a position higher than the bus bar, and the control unit controls the operation of the cooling fan. When the temperature measured by the temperature sensor exceeds a preset value, the cooling fan is operated to forcibly circulate the air inside the body upward and downward.

The temperature sensor may include a first temperature sensor disposed on an upper portion of the body; and a second temperature sensor disposed in the lower portion of the main body, wherein the control unit is configured when the difference between the temperature measured by the first temperature sensor and the temperature measured by the second temperature sensor exceeds a preset value. The cooling fan is operated.

According to the switchboard, bus duct, and transformer equipped with the cooling fan operated by the electromagnetic energy harvester of the present invention as described above, the following effects are obtained.

Since the energy generated in the busbar is collected as electromagnetic energy in the energy collecting unit to operate the cooling fan, etc., the cooling fan can be operated through self-generation without an external power source, thereby cooling Since a separate power line for operating the fan is unnecessary, insulation problems and wiring problems can be solved.

In addition, the amount of energy collected can be maximized by short-circuiting the magnetic energy collection unit through the ground-side connection portion of the insulator.

In addition, when voltage is applied even in a no-load state in which current is not applied to the bus bar by the magnetic energy collecting unit, electromagnetic energy may be generated to operate a cooling fan or the like.

1 is a side cross-sectional structure diagram of a power facility (a switchboard, a booth duct, a transformer) according to an embodiment of the present invention;
2 is a structural diagram of a magnetic energy collection unit in a power facility (a switchboard, a booth duct, a transformer) according to an embodiment of the present invention;
3 is a structural diagram of the installation of an electric energy collection unit in a power facility (a switchboard, a booth duct, a transformer) according to an embodiment of the present invention;

As shown in FIG. 1, a power facility composed of a switchboard, a bus duct, a transformer, etc. of the present invention includes a main body 1, a bus bar 2, an insulation tube 3, and energy collection units 4 and 5 ), a circuit board 6, an insulator 7, a cooling fan 8, temperature sensors 91 and 92, and a control unit 10.

The main body 1 constitutes an enclosure of a power facility, and means an enclosure of a switchboard, a bus duct, a transformer, and the like.

In the present invention, the main body 1 is made of a closed type, so that the inflow and outflow of internal air and external air is blocked.

The busbar 2 is disposed inside the main body 1.

A plurality of the busbars 2 are installed inside the main body 1.

The insulating tube 3 is coupled while surrounding the outer circumferential surface of the bus bar 2.

The energy collectors 4 and 5 collect electromagnetic energy generated from the busbar 2.

The energy collecting unit is coupled to the busbar 2 with the insulating tube 3 surrounding the outer circumferential surface of the busbar 2 interposed therebetween, and collects electromagnetic energy generated by the busbar 2.

The energy collecting unit includes a magnetic energy collecting unit 4 and an electric energy collecting unit 5 .

In some cases, the energy collecting unit may be formed of only the magnetic energy collecting unit 4 .

However, by making the energy collecting part consist of a magnetic energy collecting part 4 and an electric energy collecting part 5, in a no-load state in which no current is applied, the electric energy collecting part 5 generates electromagnetic energy, and when current is applied In a load state, the magnetic energy collection unit 4 can generate more electromagnetic energy.

The energy collection unit is insulated from non-contact with the bus bar 2 by the insulation tube 3.

The magnetic energy collecting unit 4 and the electric energy collecting unit 5 will be described later.

The circuit board 6 is electrically connected to the energy collection unit.

That is, the magnetic energy collecting unit 4 and the electric energy collecting unit 5 are electrically connected to the circuit board 6 .

The circuit board 6 may be separately separated from the magnetic energy collecting part 4 and the electric energy collecting part 5, or may be closely coupled to or embedded in either one.

The circuit board 6 has a built-in power conversion unit that converts alternating current into direct current.

The cooling fan 8 is mounted inside the main body 1 and is operated by being connected to the circuit board 6 connected to the energy collecting part.

The cooling fan 8 operates by receiving electromagnetic energy collected by the energy collector through the circuit board 6 .

The cooling fan 8 may be mounted in various positions inside the main body 1, and preferably, as shown in the drawings of this embodiment, the cooling fan 8 is higher than the bus bar 2. position to be mounted on the top of the main body (1).

As described above, by mounting the cooling fan 8 on the upper ceiling of the main body 1 at a position higher than the bus bar 2, when a large current is energized, the surroundings of the bus bar 2 disposed inside the main body 1 When the air temperature is heated and the temperature difference between the busbar 2 at the top and the busbar 2 at the bottom is large, the cooling fan 8 is operated to forcibly circulate the heated air to minimize the temperature difference between the upper and lower air. can do.

In particular, since the present invention self-generates and collects electromagnetic energy in the energy collection unit as described above and uses it to operate the cooling fan 8, a separate control line and power line for driving the cooling fan 8 are required. Since it is unnecessary, it is possible to reduce insulation problems caused by connection of power lines, etc., and the hassle of wiring work.

The cooling fan 8 mounted inside the main body 1 is operated by the electromagnetic energy collected in the energy collecting unit to forcibly circulate the air inside the main body 1 .

The temperature sensor measures the temperature inside the main body 1 .

The controller 10 controls whether the cooling fan 8 operates according to the values measured by the temperature sensors 91 and 92 .

When the temperature measured by the temperature sensor exceeds a preset value, the controller 10 operates the cooling fan 8 to forcibly circulate the air inside the main body 1 upward and downward.

Although the temperature sensor may be composed of only one, as in this embodiment, the temperature sensor is preferably composed of a first temperature sensor 91 and a second temperature sensor 92.

The first temperature sensor 91 is disposed in the upper part of the body 1, and the second temperature sensor 92 is disposed in the lower part of the body 1.

That is, the first temperature sensor 91 is located above the second temperature sensor 92 , and the second temperature sensor 92 is located below the first temperature sensor 91 .

Therefore, the first temperature sensor 91 measures the temperature of the upper part of the body 1, and the second temperature sensor 92 measures the temperature of the lower part of the body 1.

Further, the controller 10 operates the cooling fan 8 when the difference between the temperature measured by the first temperature sensor 91 and the temperature measured by the second temperature sensor 92 exceeds a preset value. .

Through this, when the temperature difference between the upper and lower temperatures inside the main body 1 is large, the cooling fan 8 operates to forcibly circulate air to the upper and lower parts, thereby reducing the air temperature difference between the upper and lower parts of the main body 1. can be minimized.

As described above, since the present invention operates the cooling fan 8 by collecting the electromagnetic energy generated from the busbar 2 in the energy collecting unit, the cooling fan 8 can be operated through self-generation without an external power source. Through this, a separate power line or the like for operating the cooling fan 8 is unnecessary, thereby solving insulation problems and wiring problems.

The temperature sensor may be operated by a separate power source, or may be operated by electromagnetic energy connected to the circuit board 6 and collected by the energy collecting unit.

In the drawing of this embodiment, the circuit board 6 is mounted on the electrical energy collecting unit 5, but may be mounted on the magnetic energy collecting unit 4 in some cases.

Meanwhile, the magnetic energy collecting part 4 constituting the energy collecting part includes a high magnetic permeability coil 42 for concentrating the leakage magnetic field around the bus bar 2 .

More specifically, as shown in FIGS. 1 and 2, the magnetic energy collecting unit 4 includes a block housing 41, a coil 42, a core 43, a ferromagnetic band 44, and a fastening band. (45).

The block housing 41 is made of an insulator material and is disposed adjacent to the bus bar 2 with the insulation tube 3 interposed therebetween.

The coil 42 is disposed inside the block housing 41 and is electrically connected to the circuit board 6 .

The core 43 is disposed passing through the coil 42 as shown in FIG. 2(a).

The ferromagnetic band 44 penetrates the block housing 41 and is arranged to surround the bus bar 2, forming a closed magnetic circuit.

The fastening band 45 adheres the ferromagnetic band 44 to the bus bar 2 while surrounding the ferromagnetic band 44 .

The fastening band 45 is made of stainless steel.

Therefore, when current is applied to the bus bar 2, a closed magnetic circuit is formed in the ferromagnetic band 44, and electromagnetic energy is generated in the coil 42 surrounding the core 43.

The generated electromagnetic energy moves to the circuit board 6 connected to the coil 42 .

As shown in FIG. 2 (a), the core 43 and the ferromagnetic band 44 may be formed separately, and as shown in FIG. 2 (b), the ferromagnetic band 44 is the coil ( 42), the ferromagnetic band 44 may form a core.

That is, as shown in FIG. 2(b), when the ferromagnetic band 44 passes through the coil 42, a part of the ferromagnetic band 44 functions as a core.

At this time, in the structure shown in FIG. 2(b), the coil 42 is closer to the busbar 2 than the structure shown in FIG. 2(a), so that more electromagnetic energy can be generated. .

In FIG. 2( b ), only the ferromagnetic band 44 passes through the coil 42, but the fastening band 45 may also pass through the coil 42 together with the ferromagnetic band 44.

In addition, the electrical energy collecting unit 5 constituting the energy collecting unit generates electric energy by concentrating the leakage electric field around the bus bar 2 .

As shown in FIGS. 1 and 3 , the electrical energy collecting unit 5 includes the insulating housing 51 and the charge collecting plate 52 .

The insulating housing 51 is made of an insulating material and coupled to the bus bar 2.

The charge collecting plate 52 is made of a metal material such as copper, is disposed on the exposed surface of the insulating housing 51, and is in contact with the insulating tube 3, and is in contact with the bus bar 2 by the electrostatic induction method. It collects the leaked charge.

The charge collecting plate 52 is electrically connected to the circuit board 6 .

The charge collecting plate 52 in contact with the insulating tube 3 collects leakage charges around the bus bar 2 and generates electric energy.

The stacked structure of the bus bar 2, the insulating tube 3, and the charge collecting plate 52 has a transistor-like structure, and collects leaked charges in the charge collecting plate 52 to generate electrical energy.

In the present invention, since the charge collecting plate 52 produces electric energy by electrostatic induction, not only the load state in which current is applied to the busbar 2, but also the no-load state in which no current is applied to the busbar 2 Even in this state, if only voltage is applied to the busbar 2, electrical energy can be produced by collecting leakage charges around the busbar 2 in an electrostatic induction method.

That is, the electrical energy collecting unit 5 produces power by actively collecting charges when the current of the busbar 2 is 0A under no load, and when the current is applied and increases, the magnetic energy collecting unit 4 and At the same time, the amount of energy collected increases, leading to charging.

Therefore, the present invention can produce electrical energy even in a no-load state in which no current is applied, and by using the electrical energy produced in this way, a current is supplied to the pressure sensor 8 even in a no-load state in which no current is applied to the pressure sensor. (8) can be operated.

The insulation housing 51 may be coupled to the bus bar 2 in various ways and structures other than the structure shown in this embodiment.

In this embodiment, the insulating housing 51 includes a first insulating housing 511, a second insulating housing 512, and a coupling member 53.

The first insulating housing 511 is disposed to face the wide surface of the bus bar 2.

The second insulating housing 512 is disposed opposite to the other wide surface of the bus bar 2.

The coupling member 53 is composed of bolts, nuts, etc., and couples the first insulation housing 511 and the second insulation housing 512 to each other while the first insulation housing 511 and the second insulation housing 512 Adhere to the bus bar (2).

In addition, the charge collecting plate 52 is coupled to one surface of the first insulating housing 511 and adheres to one surface of the bus bar 2 with the insulating tube 3 interposed therebetween. ) and a second charge collecting plate 52b coupled to one surface of the second insulating housing 512 and in close contact with the other surface of the bus bar 2 with the insulating tube 3 interposed therebetween.

Depending on the case, the charge collecting plate 52 may be made of only one of the first charge collecting plate 52a and the second charge collecting plate 52b, or may be made of two pieces as in the present embodiment.

In addition, one of the first charge collecting plate 52a and the second charge collecting plate 52b supplies electrical energy necessary for the operation of the pressure sensor 8, and the other one supplies the operation of the wireless transmitter 9 and the like. It can also be used to supply the necessary electrical energy.

As in the present embodiment, the charge collection plate 52 is disposed on both one side and the other side of the bus bar 2, so that the amount of electrical energy collected can be increased.

The first charge collecting plate 52a and the second charge collecting plate 52b are electrically connected to each other, and either one of the first charge collecting plate 52a and the second charge collecting plate 52b is connected to the circuit board 6 connected to

The first insulating housing 511 includes a first contact body 511a on which the first charge collecting plate 52a is mounted on one surface exposed to the outside, and a first contact body 511a formed on one side of the first contact body 511a. It consists of a coupling support (511b).

The second insulating housing 512 includes a second contact body 512a on which the second charge collecting plate 52b is mounted on one surface exposed to the outside, and a second contact body 512a formed on one side of the second contact body 512a. It consists of a coupling support portion (512b).

An insertion protrusion 511c is formed in the first coupling support portion 511b in the direction in which the second coupling support portion 512b is disposed, and the insertion protrusion 511c is inserted into the second coupling support portion 512b. A groove 512c is formed.

The coupling member 53 is coupled through the first coupling support portion 511b and the second coupling support portion 512b.

In the state shown in FIG. 3(a), when fastening is performed using the coupling member 53 made of bolts and nuts, the insertion protrusion 511c is inserted into the insertion groove as shown in FIG. 3(b). While being inserted and seated in 512c, the first charge collecting plate 52a and the second charge collecting plate 52b come into close contact with the insulating tube 3.

The bus bar 2 is supported by the insulator 7, and the electrical energy collection part 5 is connected to the insulator 7.

The electric energy collection part 5 is short-circuited together through the ground side connection part of the insulator 7.

More specifically, the circuit board 6 has one end connected to the charge collecting plate 52 and the other end connected to the insulator 7 .

Accordingly, the circuit board 6 is short-circuited and grounded together through the ground-side connection portion of the insulator 7.

As described above, the electric energy collection part 5 is short-circuited together through the ground side connection part of the insulator 7, so that the amount of electric energy collected by the electric energy collection part 5 can be maximized.

As described above, the energy collecting unit of the present invention consists of the magnetic energy collecting unit 4 and the electric energy collecting unit 5, and collects energy from the electric energy collecting unit 5 in a no-load state, and in a load state in which current flows. By collecting more energy from the self-energy collecting unit 4, the cooling fan 8 and the like can be operated through self-power generation.

Since the present invention operates the cooling fan 8 by collecting the energy generated from the bus bar 2 as electromagnetic energy in the energy collection unit, the cooling fan 8 can be operated through self-generation without an external power source. Through this, cumbersome wiring work for operating the cooling fan 8 can be reduced, and wiring problems and the like can be solved.

The switchgear, bus duct, and transformer equipped with a cooling fan operated by the electromagnetic energy harvester of the present invention are not limited to the above-described embodiments, and can be variously modified and implemented within the scope permitted by the technical spirit of the present invention.

1: body,
2: bus bar,
3: insulation tube,
4: magnetic energy collection unit, 41: block housing, 42: coil, 43: core, 44: ferromagnetic band, 45: fastening band,
5: electromagnetic energy collecting part, 51: insulating housing, 511: first insulating housing, 511a: first contact body, 511b: first coupling support, 511c: insertion protrusion, 512: second insulation housing, 512a: second contact body , 512b: second coupling support, 512c: insertion groove, 52: charge collection plate, 52a: first charge collection plate, 52b: second charge collection plate, 53: coupling member,
6: circuit board, 7: insulator, 8: cooling fan, 91: first temperature sensor, 92: second temperature sensor, 10: control unit.

Claims (9)

The main body of the power facility;
a plurality of busbars disposed inside the main body;
an insulation tube surrounding an outer circumferential surface of the busbar;
an energy collecting unit coupled to the busbar with the insulation tube interposed therebetween to collect electromagnetic energy generated from the busbar;
a circuit board connected to the energy collecting unit;
A cooling fan mounted inside the main body and connected to the circuit board to operate;
The main body is made of a closed type,
The energy collecting unit is made of a magnetic energy collecting unit including a high permeability coil for focusing a leakage magnetic field around the busbar,
The energy collection unit is insulated from contact with the bus bar by the insulation tube,
The cooling fan connected to the circuit board inside the main body is equipped with a cooling fan operated by an electromagnetic energy harvester, characterized in that forcibly circulating the air inside the main body while being operated by the electromagnetic energy collected in the energy collection unit. switchgear, bus duct, transformer. In claim 1,
The magnetic energy collecting unit,
a block housing made of an insulator material disposed adjacent to the bus bar with the insulation tube interposed therebetween;
a coil disposed inside the block housing and connected to the circuit board;
a core penetrating the coil;
a ferromagnetic band that passes through the block housing and is arranged to surround the circumference of the bus bar and constitutes a closed magnetic circuit;
A switchboard equipped with a cooling fan operated by an electromagnetic energy harvester, a bus duct, a transformer. In claim 1,
The magnetic energy collecting unit,
a block housing made of an insulator material disposed adjacent to the bus bar with the insulation tube interposed therebetween;
a coil disposed inside the block housing and connected to the circuit board;
a ferromagnetic band that passes through the block housing and is arranged to surround the circumference of the bus bar and constitutes a closed magnetic circuit;
A fastening band for bringing the ferromagnetic band into close contact with the busbar while surrounding the ferromagnetic band;
The ferromagnetic band penetrates the coil to form a core. In claim 2 or claim 3,
The energy collecting unit further includes an electric energy collecting unit for generating electric energy by concentrating the leakage electric field around the busbar,
The electric energy collecting part is connected to the insulator connected to the bus bar while supporting the bus bar, and the electric energy collecting part is short-circuited together through the ground side connection of the insulator. Switchgear with fan, bus duct, transformer. In claim 4,
The electrical energy collection unit,
an insulating housing made of an insulating material;
It is made of a metal electrostatic induction charge collecting plate disposed on the exposed surface of the insulating housing and in contact with the insulating tube; including,
The circuit board has one end connected to the charge collecting plate and the other end connected to the insulator. The method of claim 5,
The insulating housing,
a first insulating housing disposed to face the wide surface of the bus bar;
a second insulating housing disposed to face the other wide surface of the bus bar;
A coupling member for bringing the first insulation housing and the second insulation housing into close contact with the busbar while combining the first insulation housing and the second insulation housing;
The charge collection plate,
a first charge collecting plate coupled to one surface of the first insulating housing and in close contact with one surface of the bus bar with the insulating tube interposed therebetween;
A second charge collecting plate coupled to one surface of the second insulating housing and in close contact with the other surface of the bus bar with the insulating tube interposed therebetween;
The first charge collecting plate and the second charge collecting plate are electrically connected to each other,
A switchboard, booth duct, transformer equipped with a cooling fan operated by an electromagnetic energy harvester, characterized in that one of the first charge collecting plate and the second charge collecting plate is connected to the circuit board. In claim 6,
The first insulating housing,
a first contact body on which the first charge collecting plate is mounted on one surface exposed to the outside;
A first coupling support portion formed on one side of the first contact body;
The second insulating housing,
a second contact body on which the second charge collecting plate is mounted on one surface exposed to the outside;
A second coupling support portion formed on one side of the second contact body;
An insertion protrusion is formed in the first coupling support portion in a direction in which the second coupling support portion is disposed,
An insertion groove into which the insertion protrusion is inserted is formed in the second coupling support part,
The fastening member is coupled through the first coupling support portion and the second coupling support portion,
The insertion protrusion is inserted and seated in the insertion groove by the coupling force of the fastening member, and the first charge collecting plate and the second charge collecting plate are in close contact with the insulating tube. Equipped switchgear, bus duct, transformer. In claim 1,
a temperature sensor for measuring the internal temperature of the main body;
A control unit controlling whether the cooling fan operates according to the value measured by the temperature sensor;
The cooling fan is mounted on the upper part of the main body at a position higher than the bus bar,
The control unit is equipped with a cooling fan operated by an electromagnetic energy harvester, characterized in that for operating the cooling fan to forcibly circulate the air inside the body up and down when the temperature measured by the temperature sensor exceeds a preset value Switchgear, bus duct, transformer. In claim 8,
The temperature sensor is
a first temperature sensor disposed on the inside of the main body;
A second temperature sensor disposed in the lower part of the inside of the main body; including,
The control unit operates the cooling fan when the difference between the temperature measured by the first temperature sensor and the temperature measured by the second temperature sensor exceeds a preset value. Equipped switchgear, bus duct, transformer.

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