KR100807760B1 - Metal-clad switchgear and controlgear - Google Patents

Abstract

A metal-clad switchboard is provided to efficiently manage the metal-clad switchboard by repairing and replacing with isolating only a side which is electrically connected to a repaired component. A metal-clad switchboard includes housing(101), electrical equipment, a first bus(113), and a second bus(114). An inner space of the housing is partitioned into a machinery room(104) to receive the electric power machine, a first bus room(102) with the first bus, and a second room(103) with the second bus. The machinery room, the first bus room, and the second bus room are isolated from each other by a partition wall. The first and second bus rooms have door units(106,107) respectively. The door unit of the first bus room is installed at the housing to directly connect the outside of the housing and the inside of the first bus room when opening. The door unit of the second bus room is installed at the housing to directly connect the outside of the housing and the inside of the second bus room when opening.

Description

Metal-clad switchgear {Metal-clad switchgear and controlgear}

1 is a side internal view of an example of a conventional closed switchgear.

Figure 2 is a side interior view of the metal-coated switchgear according to an embodiment of the present invention.

3 is a schematic view of the first and second connection units of the metal-coated switchgear of FIG.

Figure 4 is a side interior view of a metal-coated switchgear according to another embodiment of the present invention.

Figure 5 is a side interior view of a metal-coated switchgear according to another embodiment of the present invention.

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

100: metal coating switchboard 101: housing

102: primary bus room 103: secondary bus room

104: equipment room 105: control room

106, 107: door part 111: load switch (LBS)

112: arrester (LA) 113: primary bus

114: secondary bus 115: support insulator

120: power equipment cart 130: first connection unit

140: second connection unit

The present invention relates to a metal-coated switchgear, and in particular, in the primary bus room installed with a primary bus for introducing an external power supply into a power device such as a load breaker (LBS), a transformer transformer current transformer (MOF), and the like The present invention relates to a metal-coated switchgear in which secondary bus chambers provided with secondary buses for drawing power controlled by the outside are separated from each other by partition walls.

In general, an electrical room provided in a building, a factory, or an apartment is provided with a closed switchgear for receiving high voltage or extra high voltage electricity supplied by a power company and distributing it to the load of each customer. The closed switchgear is divided into a special high platen, a transformer plate and a low platen according to the power supply procedure and voltage of the power system, and is divided into a metal-coated switchgear, a compartmental switchgear and a cubicle switchgear.

1 is a side internal view of an example of a conventional closed switchgear. An extra high pressure plate, which is an example of the closed switchgear, is typically a high pressure water board (LBS panel), a transformer transformer current base (MOF panel), an instrument transformer panel (PT panel), a special high breaking panel (VCB panel), and the like. 1, there is shown a high-voltage water board.

The closed switchboard 10 is electrically connected to a power device such as a load breaker (LBS) 21 and a lightning arrester (LA) 22 and the like, and to draw a primary power supplied from the outside into the power device. And a secondary bus 15 electrically connected to the power device for drawing out the secondary power source controlled by the power device to the outside. The inner space 12 of the closed switchboard 10 housing 11 is composed of a single space, and the inner space 12 includes a load switch 21, an arrester 22, a primary bus line 14, and The secondary bus bar 15 is provided together.

For example, when a failure occurs due to an abnormal voltage or flashover on the primary bus 14 side, the failure and accident are spread in the interior space 12 of the housing 11 and installed together in the interior space 12. It affects the secondary bus 15, the load switch 21, the lightning arrester 22, etc. That is, in the conventional closed switchboard, since the primary bus 14 and the secondary bus 15 are configured to be installed together in a single inner space 12, there is a problem in either the primary power supply or the secondary power supply. Even if there is a problem, buses, power devices, and various control circuits installed together in a single inner space of the housing are damaged together.

In addition, since buses, power devices, and various control circuits are installed in a single internal space, even if only one of the primary power supply and the secondary power supply is intended to be repaired, the primary power supply and the secondary power supply may be caused by the risk of electric shock. There was a problem that the repair work must be performed with all the blocks.

The present invention has been made in order to solve the above-described problems, the equipment room is installed with a power device, the primary bus room is installed with a primary bus for drawing the external power to the power device, and the power controlled by the power device outside Since the secondary bus chambers with secondary buses for drawing out of the furnace are separated from each other by the partition wall, it is possible to prevent damages on the other side due to the failure generated on one side and to efficiently perform the troubleshooting work. An object of the present invention is to provide an improved metal-coated switchgear.

In order to achieve the above object, the metal-coated switchgear of the present invention includes a housing having an inner space, a power device for controlling electricity supplied to and installed in the inner space of the housing, and the power device from the outside of the housing. A primary bus for drawing power to the furnace, and a secondary bus for drawing the power controlled by the power device to the outside of the housing, wherein the interior space of the housing includes: an equipment room accommodating the power device; It is divided into a primary bus chamber in which the primary bus bar is installed and a secondary bus chamber in which the secondary bus bar is installed, and the device chamber, the primary bus chamber and the secondary bus chamber are separated from each other by a partition wall, and the primary bus Each of the cabin and the secondary bus bar has a door part for closing the isolated interior so as to be openable, and the door part of the primary bus bar is opened when the door part is opened. The housing is installed in the housing so that the outside of the housing and the inside of the primary bus chamber directly communicate with each other, and the door part of the secondary bus chamber is in direct communication with the outside of the housing and the inside of the secondary bus chamber when the door part is opened. It is characterized in that installed in the housing.

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In the metal-coated switchgear according to the present invention, preferably, the gas discharge port communicated with the equipment chamber for releasing the gas that can be generated in the equipment chamber, and the one for releasing the gas that can be generated in the primary bus chamber. The gas discharge port communicating with the secondary bus chamber and the gas discharge port communicating with the secondary bus chamber are separately formed in order to discharge gas generated in the secondary bus chamber.

In the metal-coated switchgear according to the present invention, preferably, a power equipment cart which is slidably installed with respect to the housing so as to be drawn into or withdrawn from the inner space of the housing and mounted with the power device. And a first connection unit for electrically connecting the power device and the primary bus, and a second connection unit for electrically connecting the power device and the secondary bus. Each of the connection units includes: an intermediary bus coupled to the power device and electrically connected to the power device; An intermediate terminal part electrically connected to the primary bus or the secondary bus; And a clamping member coupled to the intermediate bus bar, the clamping member elastically clamping the intermediate terminal part when the power device cart is drawn into the inner space of the housing.

Hereinafter, preferred embodiments of the metal-coated switchgear according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a side view of a metal-coated switchgear according to an embodiment of the present invention, and FIG. 3 is a view schematically illustrating first and second connection units of the metal-coated switchgear of FIG. 2.

2 and 3, the metal-coated switchgear 100 according to the present embodiment includes a primary chamber in which an appliance chamber 104 and a primary bus 113 are installed to accommodate a power device in an inner space of the housing 101. The cabin 102 and the secondary bus chamber 103 in which the secondary bus 114 is installed are separated from each other by the partition 108, and the power equipment, the primary bus 113, and the secondary bus 114 are separated from each other. And a power device cart 120, a first connection unit 130, and a second connection unit 140.

The power device, which is installed in the inner space of the metal-coated switchgear housing 101 and controls the supplied power, includes a load switch (LBS) 111 and an arrester (LA) 112. The load switch 111 is installed on the side to which power is input from an external power source, and is used for the purpose of separating a circuit when checking and repairing. The lightning arrester 112 protects a device of a power installation from an abnormal voltage. Device.

The primary bus 113 is for introducing power to the power device from the outside of the housing 101, and the power drawn through the primary bus 113 is generally referred to as primary power. The secondary bus 114 is intended for outflow of the power controlled by the power device to the outside of the housing 101. The secondary bus 114 typically controls the power drawn by the power device and drawn out through the secondary bus 114. It is called. In the primary bus 113 and the secondary bus 114, portions other than the terminal portions connected to the power equipment and the like are insulated by an insulating tube or an epoxy powder coating treatment having excellent insulation and flame retardancy. To prevent flashovers that may occur due to the proximity of the busbars 113 and 114 and the busbars 113 and 114 and the busbars 113 and 114 and the housing 101, to maintain a predetermined distance 1 A support insulator 115 for supporting the vehicle bus 113 or the secondary bus 114 is used.

The housing 101 is sealed by front, rear, left and right, and top and bottom, and its interior space is provided with an equipment chamber 104 for accommodating the load switch 111 and the arrester 112, and the primary bus line 113 is provided. The primary bus chamber 102, the secondary bus chamber 103 in which the secondary bus line 114 is installed, and the control chamber 105 in which the control circuit and the board are installed, and the equipment room 104 and the primary bus. The cabin 102, the secondary bus chamber 103, and the control chamber 105 are isolated from each other by the partition 108. Therefore, the device chamber 104, the primary bus chamber 102, the secondary bus chamber 103, and the control chamber 105 form an independent space in the interior space of the housing 101, respectively. However, since the partition wall 108 for isolating each seal is coupled to the housing 101 by a fastening means such as a screw, the partition wall 108 may be separated by loosening the screw so that all the threads communicate with each other.

The rear side of the housing 101 is provided with a door portion 106 for entering and exiting the primary bus chamber 102, the upper surface of the housing 101, the door portion for entering and exiting the secondary bus chamber 103 ( 107). When the door part 106 of the primary bus chamber is closed, the door part 106 makes the inner space of the primary bus chamber 102 an independent space, and when the door part 106 is opened, the housing ( The outside of 101 and the inside of the primary bus chamber 102 are in direct communication. In addition, the door part 107 of the secondary bus compartment also makes the internal space of the secondary bus compartment 103 an independent space when the door part 107 is closed, and the housing when the door part 107 is opened. The outside of the 101 and the inside of the secondary bus chamber 103 is in direct communication.

In the housing 101, a gas chamber outlet 151 formed in communication with the machine chamber 104 and a gas generated in the primary bus chamber 102 are discharged to the outside in order to discharge gas generated during explosion of the machine chamber to the outside. The first gas discharge port 152 formed in communication with the primary bus chamber 102 to discharge, and the first gas discharge port 152 formed in communication with the secondary bus chamber 103 to discharge the gas generated in the secondary bus chamber 103 to the outside. 2 gas discharge ports 153 are formed separately. A discharge passage 155 is formed between the second bus chamber 103 and the pair of partition walls 108 separating the control chamber 105 to connect the machine chamber 104 and the equipment chamber gas outlet 151. The gas generated in the equipment room 104 is configured to be directly discharged to the outside through the discharge passage 155 without passing through another space such as the primary bus chamber 102, the secondary bus chamber 103, or the control chamber 105. It is.

 The power device cart 120 is equipped with a load switch 111 and an arrester 112, and is slidable with respect to the housing 101 to be introduced into or drawn out from the device room 104. It is installed. The power equipment cart 120 is drawn into the equipment room 104 under normal circumstances, and is drawn out from the equipment room 104 when a problem occurs in the load breaker 111 or the lightning arrester 112 and needs to be checked and replaced. do. Wheels 121 that slide in surface contact with the bottom of the device chamber 104 are installed at lower ends of both sides of the power device cart 120, and guide the wheels 121 under the inner wall of the device chamber 104. The guide rail part 122 is provided.

The first connection unit 130 is for electrically connecting the input terminal of the load breaker 111 and the primary bus 113, and the second connection unit 140 is connected to the output end of the load switch 111 and the secondary. It is for electrically connecting the bus bar 114, and includes a bus bar 131 and 141, a bus terminal part 132 and 142, and clamping members 133 and 143, respectively.

The intermediate bus 131, 141, one end is coupled to the input end of the load switch 111 is electrically connected to the load switch 111 and the other end is coupled to the clamping members 133, 143 to be described later It is. The intermediate buses 131 and 141 are supported by the support insulator 115 installed in the power equipment cart 120. Similar to the primary buses 113 and the secondary buses 114, the intermediate buses 131 and 141 also have an insulating tube or epoxy powder coating having excellent insulation and flame retardancy except for those parts coupled to the load switch 111. It is insulated by the process.

The intermediate terminal portions 132 and 142 penetrate through the partition wall 108 separating the device room 104 and the primary bus room 102 and the partition wall 108 separating the device room 104 and the secondary bus room 103, respectively. One end thereof protrudes toward the primary bus chamber 102 and the secondary bus chamber 103 and is electrically connected to the primary bus 113 and the secondary bus 114, and the other end thereof is the equipment room 104. Terminals 134 and 144 that protrude to the side and are clamped by the clamping members 133 and 143 are provided.

The clamping members 133 and 143 are coupled to the intermediary buses 131 and 141, and the terminals 133 and 143 of the intermediary terminal portion when the power device cart 120 is led into the equipment room 104. Is elastically clamped. The clamping members 133 and 143 are disposed to face each other and are coupled to the pair of finger parts 135 and 145 and the finger parts 135 and 145 which are fastened and contacted with the terminals 133 and 143. Elastic pressing parts 136 and 146 which provide elastic pressing force to the finger parts 135 and 145 in the direction of pressing the inserted terminals 134 and 144 are provided.

In the metal-coated switchgear according to the present embodiment configured as described above, the barrier compartment includes a device room for accommodating power devices such as a load breaker and an arrester, a primary bus room with a primary bus bar, and a secondary bus room with a secondary bus bar. It is configured to be isolated by. Therefore, when a problem such as sparks or flashovers occurs in any of the interior spaces of the equipment room, the primary bus room and the secondary bus room, only the parts of the internal space where the problem occurs are damaged, and even parts installed in other spaces. The effect can be prevented from spreading the damage.

In addition, since the barrier that separates each chamber prevents an operator from entering the primary bus chamber for repair of the components installed in the primary bus chamber, the risk of electric shock by the components installed in the secondary bus chamber is prevented. In case of repairing only one side of the parts or parts connected to the secondary power supply, it is possible to repair or replace the metal-covered switchboard without interrupting the entire power supply, and repairing and replacing only the side electrically connected to the parts to be repaired. You can get a manageable effect.

In addition, in the metal-coated switchgear according to the present embodiment, since the power equipment cart equipped with the power equipment is installed to be withdrawn from the equipment room, the operator directly bows to the inside of the equipment room to repair the power equipment in an uncomfortable posture. Instead of replacing, the power equipment cart can be withdrawn from the equipment room and the power equipment can be easily repaired and replaced in a large outside space.

On the other hand, Figure 4 is a side internal view of a metal-coated switchgear according to another embodiment of the present invention. In the embodiment shown in Figure 4, the metal-coated switchgear of the present invention will be described taking the transformer current transformer base (MOF panel) as an example.

As shown in FIG. 4, the internal space of the housing 201 of the metal-coated switchgear 200 according to the present embodiment has the same electric power as the power fuse (PF) 212 and the transformer transformer current transformer (MOF) 211. The equipment chamber 204 in which the equipment is accommodated, the primary bus chamber 202 provided with the primary bus bus 113, the secondary bus chamber 203 provided with the secondary bus 114, and the control chamber 205 provided with the control circuit and the board. The equipment chamber 204, the primary bus chamber 202, the secondary bus chamber 203, and the control chamber 205 are separated from each other by the partition wall 208.

The transformer current transformer 211 and the power fuse 212 are mounted to the power equipment cart 220, and the power equipment cart 220 is slidably installed with respect to the housing 210.

The rear of the housing 201 is provided with a door portion 206 for closing or opening the secondary bus chamber 203, and the upper surface of the housing 201 for closing or opening the primary bus chamber 202. Part 207 is provided.

On the other hand, Figure 5 is a side internal view of a metal-coated switchgear according to another embodiment of the present invention. In the embodiment shown in Fig. 5, the metal-coated switchgear of the present invention will be described taking the special cut-off base (VCB board) as an example.

As shown in FIG. 5, the interior space of the housing 301 of the metal-coated switchgear 300 of the present embodiment includes a device room 304 in which a power device such as a vacuum circuit breaker (VCB) 311 is accommodated, and a primary space. It is divided into the primary bus chamber 302 in which the bus bus 113 is installed, the secondary bus chamber 303 in which the secondary bus 114 is installed, and the control chamber 305 in which the control circuit and the board are installed, and the equipment room 304, 1 The vehicle bus compartment 302, the secondary bus compartment 303, and the control chamber 305 are separated from each other by the partition wall 308.

The vacuum circuit breaker 311 is mounted to the power equipment cart 320, and the power equipment cart 320 is slidably installed with respect to the housing 301.

The rear side of the housing 301 is provided with a door part 306 for closing or opening the primary bus bar 302, and the upper surface of the housing 301 for closing or opening the secondary bus bar 303. The part 307 is provided.

Although preferred embodiments and modifications have been described above, the metal-coated switchgear according to the present invention is not limited to the above-described examples, and the modifications or combinations thereof may be used within the scope not departing from the technical spirit of the present invention. Various types of metal-coated switchgear can be embodied in the art.

In the metal-coated switchgear of the present invention, when a problem such as spark or flashover occurs in any of the internal space of the equipment room, the primary bus room and the secondary bus room, only the parts of the internal space where the problem occurs are damaged. Therefore, it is effective to prevent the damage from spreading to components installed in other spaces.

In addition, if you want to repair only one side of the part connected to the primary power source or the part connected to the secondary power source, you can repair or replace it without cutting off the entire power supply. Therefore, there is an effect that can efficiently manage the metal-coated switchgear.

In addition, instead of going to the inside of the equipment room by the operator, the power equipment cart can be withdrawn from the equipment room to easily repair and replace the power equipment in a large space outside. It works.

Claims (4)

A housing having an interior space, a power device for controlling electricity supplied to and installed in the interior space of the housing, a primary bus for drawing power into the power device from outside the housing, and controlled by the power device. It includes a secondary bus for drawing the power supply to the outside of the housing, The inner space of the housing is divided into a device room for accommodating the power device, a primary bus room where the primary bus bar is installed, and a secondary bus room where the secondary bus bar is installed, The device chamber, the primary bus chamber and the secondary bus chamber are separated from each other by a partition wall, Each of the primary bus chamber and the secondary bus chamber has a door part for closing the isolated interior to be openable, The door part of the primary bus bar is installed in the housing so that the outside of the housing and the inside of the primary bus bar communicate directly when the door part is opened. And the door part of the secondary bus chamber is installed in the housing so that the outside of the housing and the inside of the secondary bus chamber communicate directly when the door part is opened. delete The method of claim 1, An apparatus chamber gas outlet communicating with the apparatus room for releasing gas that may be generated in the apparatus chamber to the outside, and a first gas outlet communicating with the primary bus chamber for releasing gas that may occur in the primary bus chamber to the outside; And a second gas discharge port communicating with the secondary bus chamber to separately discharge gas that may occur in the secondary bus chamber to the outside. The method of claim 1, Electrically connecting the power device cart and the power device cart to which the power device is mounted and slidably installed with respect to the housing so as to be drawn into or withdrawn from the inner space of the housing, and are mounted with the power device. And a second connection unit for electrically connecting the first connection unit with the power device and the secondary bus, Each of the first and second connection units, An intermediary bus coupled to the power device and electrically connected to the power device; An intermediate terminal part electrically connected to the primary bus or the secondary bus; And a clamping member coupled to the intermediary bus bar and electrically clamping the intermediary terminal unit when the power device cart is drawn into the inner space of the housing. .

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