KR20170117764A - Distributing board applying Flexible Busbar - Google Patents

Abstract

The present invention relates to a power supply apparatus, A power equipment installed inside the main body and modifying a voltage or current of a power source supplied from the outside; A fixed booth bar coupled to the power input / output unit or the power take-off unit of the power equipment and connected to the power supply unit, and another fixed booth bar connected to the fixed booth bar of the power equipment to electrically connect the power supply, The present invention provides a seismic resistant switchboard to which a flexible bus bar is applied.

Description

Distributing board applying Flexible Busbar with Flexible Busbar

The present invention relates to a seismic resistant switchboard to which a flexible bus bar is applied. More particularly, the present invention relates to a seismic switchboard that is capable of absorbing vibration even when a boom bar is wobbled by an external force, This is about a seismic resistant switchboard to which a flexible busbar is applied.

In general, the switchgear is responsible for receiving power from the power supplier and supplying power to the equipment requiring power consumption, and it is establishing related facilities of a conventional transformer room equipped with water distribution equipment and transformer equipment.

For example, the inside of the above-mentioned switchgear is divided into a high-voltage side and a low-voltage side step by step, and a power receiving apparatus receiving electric power from a power supplier KEPCO and a power supply apparatus , And a circuit breaker that protects the entire plant from accidents such as power outages.

In consideration of the safety of electric shock and fire in the process of use, the switchboard used in this case is an insulated main body having a switchgear door for restricting direct contact with the outside and for inspecting or maintaining the inside of the switchgear, In consideration of reliability against a supply voltage, various protective devices such as a circuit breaker and a lightning arrester are installed in the main body as essential requirements.

Power plants such as the switchboard use a bus bar to connect or distribute power to distribute large amounts of external power supplied to each equipment.

However, since such a bus bar is formed of steel and has a considerable weight, the load of electric power facilities is increased, which makes it difficult to carry or load the bus bar. Also, once the combined bus bar is difficult to deform because of its external shape, it takes a long time to disassemble and reassemble it. Moreover, when the length of the bus bar is not matched during assembling, considerable cost is incurred.

Furthermore, when an external force such as an earthquake is applied to a power facility, there is a problem that booster bars fixed inside are bent or twisted while being disconnected or short-circuited to generate secondary wares.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to solve the above-mentioned problems, and an object of the present invention is to provide a seismic isolation structure for connecting flexible busbars between busbars and busbars, And an object of the present invention is to provide a seismic resistant switchboard to which a flexible bus bar capable of preventing a secondary accident from being caused by disconnection or short-circuit between other bus bars is applied.

According to an aspect of the present invention, there is provided a power supply apparatus comprising: a main body including a power distribution unit and a power transforming unit; A power equipment installed inside the main body and modifying a voltage or current of a power source supplied from the outside; A fixed booth bar coupled to the power input / output unit or the power take-off unit of the power equipment and connected to the power supply unit, and another fixed booth bar connected to the fixed booth bar of the power equipment to electrically connect the power supply, The present invention provides a seismic resistant switchboard to which a flexible bus bar is applied.

The power take-in unit provided in one power facility connected by the fixed bus bar or the flexible bus bar and the power inlet unit provided in the other power facility can be arranged side by side.

The flexible bus bar may include a first connection terminal coupled to one of the power inlet unit and the power outlet unit, a connection member extending from the first connection terminal and formed to be deformable in outer shape, And a second connection terminal that is disposed on the other side of the first connection terminal and is coupled to the other of the power inlet portion and the power outlet portion.

The connecting member may be formed in a lattice pattern formed by twisting a plurality of strands of a steel wire made of at least one of copper, copper, silver and aluminum.

One or more fixing holes may be formed on the first connection terminal or the second connection terminal so that the first connection terminal or the second connection terminal can be fixed on the power input portion or the power lead-out portion.

The flexible bus bar may have a cross-sectional area of one end of the connecting member and a cross-sectional area of the other end different from each other.

According to the seismic resistant switchboard to which the flexible busbar according to the present invention is applied,

First, even if vibration occurs due to external force, it is possible to perform an earthquake-proof function to prevent vibration from being transmitted from one fixed bus bar to another fixed bus bar through the flexible bus bar,

Secondly, it is possible to prevent the vibration from being transmitted, thereby preventing the bus bar from breaking down due to disconnection or short-circuit,

Third, the connection process of the booth bar is simple, saving time and cost,

Fourth, since the overall weight can be reduced through the flexible bus bar, it is easy to carry or load the switchgear.

1 is a front view showing a seismic resistant switchboard to which a flexible bus bar according to an embodiment of the present invention is applied.
Figs. 2 and 3 are cross-sectional views schematically showing the inside of the seismic resistant switchboard to which the flexible busbar shown in Fig. 1 is applied.
Fig. 4 is an enlarged plan view showing a flexible busbar mounted inside a seismic resistant switchboard to which the flexible busbar shown in Fig. 2 is applied.
5 is a reference view showing a state in which the flexible bus bar shown in Fig. 3 is bent.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be noted that the drawings denoted by the same reference numerals in the drawings denote the same reference numerals whenever possible, in other drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. And certain features shown in the drawings are to be enlarged or reduced or simplified for ease of explanation, and the drawings and their components are not necessarily drawn to scale. However, those skilled in the art will readily understand these details.

FIG. 1 is a front view showing a seismic resistant switchboard according to an embodiment of the present invention, and FIGS. 2 and 3 schematically show the inside view of a seismic resistant switchboard to which the flexible busbar shown in FIG. 1 is applied FIG. 4 is an enlarged plan view showing a flexible busbar mounted inside a seismic resistant switchboard to which the flexible busbar shown in FIG. 2 is applied, and FIG. 5 is a reference view showing a state in which the flexible busbar shown in FIG. 3 is bent.

1 to 5, a seismic resistant switchboard 100 to which a flexible busbar according to an embodiment of the present invention is applied includes a main body 110 having a water distribution facility and a transformer, A power supply 120 connected to the power input / output part of the power supply 120 and connected to the power supply 120, And a flexible bus bar (140) interposed between the fixed bus bar (130) of the electric power facility (120) and the other fixed bus bar to be connected to the fixed bus bar ).

The main body 110 can be applied not only to the seismic isolation switchboard 100 to which the flexible busbar is applied, but also to the general distribution board, the switchboard, and the motor control board.

In addition, the main body 110 is divided into a plurality of areas, and the door 111 is provided for opening and closing the inside of each area. It is preferable that the regions partitioned inside the main body 110 are sequentially arranged from the special high-pressure side region to the low-pressure side region, and the order is not limited thereto. The power unit 120 in the main body 110 is provided with an electric power receiving facility corresponding to a current or a voltage, a distribution facility and a transformer facility for each area, and includes an inverter module, a transformer, and the like.

The door 111 is arranged on the front surface of the main body 110 and is opened and closed in a door-opening manner. Although not shown in the drawing, the door 111 may be provided with a separate transparent window through which the user can check the inside. Also, a display (not shown) may be provided on the door 111 to indicate the state of the power source, the information of the input and output terminals, and the presence or absence of anomalies. Of course, the display may be disposed inside the main body 110.

The power plant 120 includes a load breaker switch (LBS) for opening and closing electric power supplied at a high voltage, a metering outfit (MOF) for measuring the amount of electric power to be used, an instrument for modifying a large current to a small current Potential Transformer (PT), Current Transformer (CT), Air Blast Circuit Breaker (ABB), and the like.

As shown in the drawing, the load switch may be a knife-type switch that opens and closes high-voltage power by rotation of a knife as shown in the figure, and may be a cylinder-type switch that opens and closes high- .

The power take-off portion of the load switch is located in the lateral direction corresponding to the longitudinal direction of the seismic isolation switchboard 100 to which the flexible bus bar is applied. The power inlet portion of the transformer for meters for measuring the amount of power to be used is arranged in phase with each other. In addition, since the arrangement of the power take-off portion of the load switch and the phase transformer (R, S, T or R, S, T, N) of the voltage transformer for the meter are located in the same direction, the bus bar is bent in two- . As compared with the case of bending in the three-dimensional direction, the space required for the z-axis direction distance between the phase and the phase is not required, so that the height of the seismic resistant switchboard 100 to which the flexible bus bar is applied And the like. For example, the height of the anti-seismic switchboard 100 to which the flexible busbar is applied in the indoor electric room can be reduced by about 700 mm or more, so that the height (floor height) due to the electric room in the basement can be prevented from being increased.

When the height of the seismic resistant switchboard 100 to which the flexible bus bar is applied is reduced, the connection length of the bus bar is shortened first, and the power loss is reduced. If the height of the seismic isolation switchboard 100 to which the flexible busbar is applied is low, it can be installed in the lower part of the solar module array (not shown), so that it can be installed at the center position of many solar module arrays. In this case, since the distance between the solar module array and the switchgear is shortened, it is not necessary to provide a separate installation position of the dustproof switchboard 100 to which the flexible busbar is applied, thereby preventing power loss from the connected cable.

The power equipment 120 is coupled with a fixed bus bar 130 connecting the power facilities 120. The fixed booth bar 130 is coupled to the power inlet and power outlet of each power facility 120. Further, another fixed bus bar may be connected to the end of the fixed bus bar 130, or the flexible bus bar 140 may be connected.

The flexible bus bar 140 includes a first connection terminal 141 coupled to a fixed bus bar coupled to one of the power inlet and the power outlet and a second connection terminal 141 extending from the first connection terminal 141, And a connection member (142) formed on the connection member (142) so as to be deformable, and a fixed booth (142) disposed on the other side of the first connection terminal (141) on the connection member And a second connection terminal 143 coupled to the bar.

The first connection terminal 141 and the second connection terminal 143 are each formed with one or a plurality of fixing holes 144 so as to be coupled to one fixed bus bar and another fixed bus bar. The first connection terminal 141 and the second connection terminal 143 are formed to have the same size and connect the fixed busbars 130 or the first connection terminal 141 and the second connection terminal 143, May be formed to have different sizes. When the sizes of the first connection terminal 141 and the second connection terminal 143 are different from each other, it is preferable that the cross-sectional areas of both ends of the connection member 142 are different from each other.

The connecting member 142 is formed in a lattice pattern formed by twisting a plurality of strands of a steel wire made of at least one of copper, copper, silver, gold, stainless steel or aluminum. In other words, since the thin steel wires are made into a plurality of bundles and these bundles are twisted to each other, the outer shape can be easily deformed by an external force. Therefore, when vibrations are applied to one of the fixed booth bars and the other fixed booth bar, the vibration can be minimized by minimizing the transmission of the vibration to the other fixed booth bar. Accordingly, it is possible to prevent a portion of the fixed busbars 130 connected to each other from being disconnected or short-circuited while the vibration is transmitted. In addition, there is an effect of minimizing the transmission of vibration and preventing safety accidents that may occur secondarily. Also, the flexible bus bar 140 can be easily applied to a connection part that has already been assembled through the fixed bus bar, and the assemblability is remarkably increased as compared with the case where only the fixed bus bar 130 is assembled, The overall weight of the anti-seismic switchboard 100 to which the flexible busbar is applied can be reduced, and it is easy to carry or load it.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And the like. Accordingly, such modifications are deemed to be within the scope of the present invention, and the scope of the present invention should be determined by the following claims.

100: Switchboard
110: main body 111: door
120: electric power facility 130: fixed booth bar
140: Flexible bus bar 141: First connection terminal
142: connecting member 143: second connecting terminal
144: Fixing hole

Claims (6)

A main body having a water distribution facility and a transforming facility inside;
A power equipment installed inside the main body and modifying a voltage or current of a power source supplied from the outside;
A fixed booth bar coupled to the power input / output unit or the power take-off unit of the power equipment to connect power to each other,
A flexible booth bar interposed between the other fixed booth bars to be connected to the fixed booth bar of the power plant and electrically connected to the power supply, the flexible booth bar being elastically bent and coupled to be deformable in outer shape;
Wherein the flexible busbar is applied to the seismic resistant switchboard. The method according to claim 1,
A power take-off unit provided in one power facility connected to the fixed booth bar or the flexible bus bar, and a flexible booth bar arranged in parallel with the power arrangement in the other power facility. The method according to claim 1,
The flexible busbar
A first connection terminal coupled to any one of the power inlet portion and the power outlet portion;
A connecting member extending from the first connection terminal and formed to be deformable in outer shape,
And a second connection terminal disposed on the other side of the first connection terminal on the connection member and coupled to the other of the power inlet portion and the power outlet portion. The method of claim 3,
The connecting member includes:
A seismic switchboard to which a flexible bus bar is applied which is formed in a grid pattern formed by twisting a plurality of steel wires made of at least one of copper, copper, silver and aluminum. The method of claim 3,
The first connection terminal or the second connection terminal may be connected to the first connection terminal,
And a flexible bus bar having one or a plurality of fixing holes for fixing the power supply unit or the power supply unit to the power supply unit or the power supply unit. The method of claim 3,
The flexible busbar
Sectional area of one end of the connecting member and the sectional area of the other end of the connecting member are different from each other.

Images