KR102583361B1 - Switchgear That Releases Hot Gas Automatically - Google Patents

Abstract

The present invention is a switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with automatic hot gas discharge and automatic restoration functions. When high-temperature and high-pressure hot gas is generated inside the switchgear and the internal pressure of the switchgear rises, the opening and closing cover can automatically open to discharge hot gas, and after the hot gas is discharged, the opening and closing cover can be automatically restored without operator intervention, and waterproofing performance is guaranteed by providing a waterproof member between the fastening parts of the members. , It relates to a switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with automatic hot gas discharge and automatic restoration functions.

Description

Switchgear that releases hot gas automatically and has automatic restoration functions (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) {Switchgear That Releases Hot Gas Automatically}

The present invention is a switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with automatic hot gas discharge and automatic restoration functions. When high-temperature and high-pressure hot gas is generated inside the switchgear and the internal pressure of the switchgear rises, the opening and closing cover can automatically open to discharge hot gas, and after the hot gas is discharged, the opening and closing cover can be automatically restored without operator intervention, and waterproofing performance is guaranteed by providing a waterproof member between the fastening parts of the members. , It relates to a switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with automatic hot gas discharge and automatic restoration functions.

A switchboard is a device that reduces the power supplied from a power plant to low pressure and distributes it to consumers. Depending on the purpose and receiving voltage, it can be installed in various forms such as a high-voltage switchboard, low-voltage switchboard, motor control panel, and distribution board.

Meanwhile, the switchboard may have a closed structure in which power devices such as circuit breakers and transformers and busbars that electrically connect them are placed inside an enclosure made of iron.

Meanwhile, an arc may occur due to an electrical accident such as a short circuit or ground fault inside the switchgear, and high-temperature and high-pressure hot gas may be generated. Such high-temperature, high-pressure hot gas reacts with the power equipment inside the switchgear and causes an explosion. Therefore, in order to ensure the safety of workers and prevent accidents, it is necessary to discharge the hot gas generated inside the switchboard to the outside in advance. .

Accordingly, conventionally, an outlet is provided that opens according to the internal pressure of the switchgear, and the outlet is opened when the pressure inside the switchgear rises to prevent explosion accidents caused by high-temperature and high-pressure hot gas. However, the conventional outlet does not automatically close after opening, so there is a problem in that the worker has to close the outlet directly after an accident, causing inconvenience.

In addition, the outlet is usually provided on the upper surface of the switchgear in consideration of the safety of workers, but as described above, it does not automatically close after being opened, so fire extinguishing water and fire extinguishing materials sprayed in the event of a fire flow into the switchgear. , As a result, there was a problem in that the power devices installed inside the switchgear were damaged.

As a result, it automatically opens when the internal pressure of the switchgear rises, and automatically closes after the internal pressure decreases. It has a waterproof function, preventing fire extinguishing water and extinguishing substances sprayed in the event of a fire from flowing into the switchgear, There is an emerging need to develop switchboards that can protect power equipment.

Domestic registered patent KR 10-1914120 B1 “Switchboard and automatic control panel device structure to remove and prevent moisture and corrosive harmful gases from entering”

The present invention is a switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with automatic hot gas discharge and automatic restoration functions. When high-temperature and high-pressure hot gas is generated inside the switchgear and the internal pressure of the switchgear rises, the opening and closing cover can automatically open to discharge hot gas, and after the hot gas is discharged, the opening and closing cover can be automatically restored without operator intervention, and waterproofing performance is guaranteed by providing a waterproof member between the fastening parts of the members. The purpose is to provide a switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with automatic hot gas discharge and automatic restoration functions.

In order to solve the above problems, a switchgear having automatic hot gas discharge and automatic restoration functions, the enclosure includes one or more hot gas outlets open to a predetermined area on the upper surface; A first part that is perpendicular to the upper surface of the enclosure and has a plurality of louver holes, and a second part that extends parallel to the upper surface of the enclosure from one end of the first part and is mutually coupled to the upper surface of the enclosure. , including a third part extending parallel to the upper surface of the enclosure from the other end of the first part, wherein the first part, the second part, and the third part form an overall U-shape, and the outer peripheral surface of the hot gas outlet is A U-shaped frame forming a perimeter wall along the; an opening/closing cover that has an area larger than the area of the hot gas outlet, opens and closes the open surface of the hot gas outlet, and has an end bent by a predetermined length in the direction of the upper surface of the enclosure; And a plurality of cover poles, the lower end of which is a rod coupled to the upper surface of the enclosure and extending in a vertical direction of the enclosure, and penetrating each of the plurality of oval holes formed in the opening and closing cover, wherein the internal pressure of the switchgear increases. In this case, the opening/closing cover rises and opens to discharge hot gas inside the switchgear, and when the internal pressure decreases, the opening/closing cover lowers and automatically restores, and penetrates each of the plurality of oval holes formed in the opening/closing cover. A switchgear is provided that prevents the opening/closing cover rising or falling from being separated by a plurality of cover poles.

In one embodiment of the present invention, the cover pole includes a buffer member coupled to the upper side of the opening and closing cover through the cover pole; A spring fixing nut fixed to the upper end of the cover pole; And a compression spring that inserts the cover pole between the spring fixing nut and the buffer member, and when the opening and closing cover rises, the compression spring applied to the opening and closing cover is compressed with the buffer member. The impact force is alleviated, and the opened and closed cover that has risen can be lowered and automatically restored by the self-weight of the open and close cover and the relaxation force of the compressed compression spring.

In one embodiment of the present invention, the opening and closing cover is a hot gas discharge guide that is formed in a V shape at the center of the lower side of the opening and closing cover and branches the flow path of the hot gas concentrated in the center of the opening and closing cover to the left and right. ; And an opening and closing handle formed on the upper side of the opening and closing cover, wherein the hot gas discharge guide is screwed to the opening and closing cover to replace the hot gas discharge guide deformed by high-pressure hot gas. there is.

In one embodiment of the present invention, the lower part of the switchgear extends in a C shape and is fitted to one end of the third part of the U-shaped frame, and the upper part extends in an O shape and is connected to the third part of the U-shaped frame and the opening and closing cover. A waterproof packing that is located between the lower surfaces of the U-shaped frame and is made of an elastic material so that the O-shaped upper part is compressed by the self-weight of the opening and closing cover, thereby sealing the gap between the third part of the U-shaped frame and the opening and closing cover. ; and has a predetermined area, wherein the cover pole passes through a part and a bolt connecting the second part of the U-shaped frame and the upper surface of the enclosure penetrates through the other part, and the upper surface of the enclosure and the upper surface of the enclosure and the Located between the nuts coupling the lower end of the cover pole and between the second part of the U-shaped frame and the upper surface of the enclosure, the coupling portion between the upper surface of the enclosure and the cover pole, and the opening/closing cover and the U-shaped frame. It may further include a waterproof cork that seals the space in the coupling surface.

In one embodiment of the present invention, the plurality of louver holes are formed in the first part of the U-shaped frame in the outer direction of the switchgear, and a mesh filter is attached to the inner direction of the switchgear in the first part of the U-shaped frame. , it can prevent water and fire extinguishing substances sprayed in the event of a fire from entering the inside of the switchgear.

In one embodiment of the present invention, the oval hole is a horizontal oval hole extending in the horizontal direction and perforated with an area larger than the cross section of the cover pole, and a horizontal oval hole extending in the vertical direction and perforated with an area larger than the cross section of the cover pole. It includes a vertical oval hole, and the horizontal oval hole and the vertical oval hole are alternately formed on the upper surface of the opening and closing cover, and the space between each of the horizontal oval hole and the vertical oval hole and the cover pole is provided. The opening and closing cover, which rises inclinedly, can rise smoothly, and the opening and closing cover can be prevented from fitting into the cover pole or damage to the cover pole due to deformation of the opening and closing cover.

In one embodiment of the present invention, the switchgear is energized based on whether each of the R-phase power line, S-phase power line, and T-phase power is energized, whether the switchgear door is opened or closed, and whether a human body approaches the inside of the switchgear. It may further include a main controller that generates step-by-step alarm information when an operator approaches.

According to one embodiment of the present invention, a hot gas discharge guide is included on the lower side of the opening and closing cover to diverge the hot gas flow path in the left and right directions to prevent the opening and closing cover from being damaged and deformed by hot gas concentrated in the lower center. can do.

According to one embodiment of the present invention, a plurality of cover poles fixedly coupled to the upper surface of the switchgear enclosure penetrate the oval hole formed in the opening and closing cover, thereby preventing the opening and closing cover from deviating beyond the cover pole when opening.

According to one embodiment of the present invention, when the opening/closing cover is closed, a waterproof packing made of a waterproof material is fitted into the U-shaped frame that is in contact with the opening/closing cover, thereby completely sealing the space between the opening/closing cover and the U-shaped frame to prevent waterproofing.

According to one embodiment of the present invention, a plurality of louver holes are formed so that heat can circulate and hot gas generated inside the switchgear can be discharged even when the opening/closing cover is closed.

According to one embodiment of the present invention, a compression spring and a buffering member are provided on the cover pole, and when the opening and closing cover is opened, the impact force applied to the opening and closing cover can be alleviated by the compression spring and the buffering member.

According to one embodiment of the present invention, the oval holes of the opening and closing cover through which the cover pole passes are formed alternately horizontally and vertically, so that the opening and closing cover can be opened smoothly even when pressure is unbalanced on the opening and closing cover.

Figure 1 schematically shows a circuit diagram of a switchgear that prevents energization-sensitive accidents according to an embodiment of the present invention.
Figure 2 shows a circuit diagram until the voltage reduced from a high-voltage or extra-high-voltage power line is transmitted to the main controller according to an embodiment of the present invention.
Figure 3 shows a circuit diagram until the voltage reduced from the low-voltage power line is transmitted to the main controller according to an embodiment of the present invention.
Figure 4 shows the process of generating step-by-step alarm information by the main controller according to an embodiment of the present invention.
Figure 5 shows a circuit diagram until the voltage reduced from the high-voltage power line is transmitted to the main controller and the energized status LED output module by the voltage detection device according to an embodiment of the present invention.
Figure 6 shows a voltage detection device according to an embodiment of the present invention.
Figure 7 shows a voltage detection device physically supporting a busbar according to an embodiment of the present invention.
Figure 8 shows a front view of a door open detection sensor according to an embodiment of the present invention.
Figure 9 shows a left side view of the door open detection sensor according to an embodiment of the present invention.
Figure 10 shows a top view and a perspective view of a door open detection sensor according to an embodiment of the present invention.
Figure 11 shows a plurality of door open detection sensors coupled through a coupling hole according to an embodiment of the present invention.
Figure 12 shows steps performed by the partial discharge diagnosis module according to an embodiment of the present invention.
Figure 13 shows a UHF signal accumulated at a preset period according to an embodiment of the present invention.
Figure 14 shows patterns for each type of partial discharge according to an embodiment of the present invention.
Figure 15 shows a process for calculating the risk of partial discharge according to an embodiment of the present invention.
Figure 16 shows an interface displaying information about partial discharge according to an embodiment of the present invention.
Figure 17 shows a switchboard with automatic hot gas discharge and automatic restoration functions in a closed state according to an embodiment of the present invention.
Figure 18 shows a switchboard with automatic hot gas discharge and automatic restoration functions in an open state according to an embodiment of the present invention.
Figure 19 shows a flow path of hot gas discharged from a switchboard according to an embodiment of the present invention.
Figure 20 shows a U-shaped frame and waterproof packing according to an embodiment of the present invention.
Figure 21 shows a waterproof cork according to an embodiment of the present invention.
Figure 22 shows an opening and closing cover perforated with a vertical oval hole and a horizontal oval hole according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that this aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain example aspects of one or more aspects. However, these aspects are illustrative and some of the various methods in the principles of the various aspects may be utilized, and the written description is intended to encompass all such aspects and their equivalents.

Additionally, various aspects and features may be presented by a system that may include multiple devices, components and/or modules, etc. It is also understood that various systems may include additional devices, components and/or modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the drawings. It must be understood and recognized.

As used herein, “embodiments,” “examples,” “aspects,” “examples,” etc. may not be construed to mean that any aspect or design described is better or advantageous over other aspects or designs. . The terms '~part', 'component', 'module', 'system', 'interface', etc. used below generally refer to computer-related entities, such as hardware, hardware, etc. A combination of and software, it can mean software.

Additionally, the terms “comprise” and/or “comprising” mean that the feature and/or element is present, but exclude the presence or addition of one or more other features, elements and/or groups thereof. It should be understood as not doing so.

Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those skilled in the art to which the present invention pertains. It has the same meaning as Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the embodiments of the present invention, have an ideal or excessively formal meaning. It is not interpreted as

1. Energization and partial discharge sensitive switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with improved worker safety

Before a detailed description of the present invention, 1. Current and partial discharge sensitive switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with improved operator safety will be described. Specifically, 1. The upper structure of the enclosure that constitutes the energization and partial discharge sensitive switchboard with improved safety for workers is 2. The switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) with automatic hot gas discharge and automatic restoration functions. ) may have the structure described in detail.

Figure 1 schematically shows a circuit diagram of a switchgear that prevents energization-sensitive accidents according to an embodiment of the present invention.

As shown in Figure 1, the energization and partial discharge sensitive switchgear with improved operator safety has 3 connected to each of the R-phase power line, S-phase power line, and T-phase power line when the system voltage is high voltage or extra-high voltage. A voltage value in which the system voltage is reduced is received from each of the voltage detection device 5 or the instrument transformer 7, and when the system voltage is low, it is connected to each of the R-phase power line, S-phase power line, and T-phase power line. A main controller (1) that receives the voltage value in which the system voltage is stepped down from the three connected instrument transformers (7) and detects whether or not each of the R-phase power line, S-phase power line, and T-phase power is energized; An outer door opening detection sensor (10) that generates an outer door open/close signal depending on whether the outer door of the switchboard is opened or closed; An approach detection sensor (3) installed in the inner space of the inner door of the switchboard and generating an approach detection signal depending on whether a human body approaches the inside of the switchgear; A sub-controller (4) that collects the outer door opening/closing signal received from the outer door opening detection sensor (10) and the approach detection signal received from the approach detection sensor (3) and transmits it to the main controller (1); It includes, the main controller (1) for each of the R-phase power line, S-phase power line, and T-phase power determined based on the voltage value received from the voltage detection device (5) and the instrument transformer (7). Based on whether the power is on, the outer door opening/closing signal received from the sub-controller 4, and the approach detection signal, step-by-step alarm information can be generated and output when a worker approaches the power distribution board.

In addition, the switchgear detects an earthquake, measures the magnitude of the earthquake vibration, determines the type of earthquake (P wave or S wave) based on the magnitude of the earthquake vibration, and determines the magnitude of the earthquake vibration and the type of earthquake. An earthquake detection sensor (11) that transmits a detection signal to the main controller (1), and the main controller (1) according to the magnitude and type of the earthquake vibration through its own output device. The earthquake detection signal can be output differently.

Specifically, the main controller (1), which generates step-by-step alarm information of the switchgear of the present invention, determines the energization status of each of the R-phase power line, Based on entry, step-by-step alarm information can be generated.

Specifically, when the system voltage is high voltage or extra-high voltage, the main controller 1 can receive the voltage value of the corresponding power line from the voltage detection device 5 or the instrument transformer 7. More specifically, when the system voltage is high voltage or extra high voltage, three voltage detection devices (5) or instrument transformers (7) are installed in each of the R-phase power line, S-phase power line, and T-phase power line, and the high voltage or extra high voltage is installed. The high-voltage system voltage can be stepped down and transmitted to the main controller (1).

Preferably, the voltage value stepped down by each of the three voltage detection devices 5 and the instrument transformer 7 may be collected in a receiving module corresponding to the device and then transmitted to the main controller 1. Specifically, the voltage stepped down from each of the three voltage detection devices 5? It can be collected in the voltage detection device receiving module (6) corresponding to the voltage detection device (5) and transmitted to the main controller (1), and the voltage step-down from each of the three instrument transformers (7) can be transmitted. It can be collected in the instrument transformer receiving module (8) corresponding to the instrument transformer (7) and transmitted to the main controller (1).

Meanwhile, when the grid voltage is low, the main controller 1 can receive the voltage value of the corresponding power line from the instrument transformer 7. Specifically, when the grid voltage is low, three instrument transformers (7) are installed on each of the R-phase power line, S-phase power line, and T-phase power line, and the low-voltage grid voltage is stepped down and transmitted to the main controller (1). can do.

Preferably, the voltage value stepped down from each of the three instrument transformers (7) can be collected by the instrument transformer receiving module (8) and transmitted to the main controller (1).

That is, in FIG. 1, when the R-phase power line, S-phase power line, and T-phase power line are low voltage, the voltage detection device 5 and the voltage detection device receiving module 6 are the instrument transformer 7 and the instrument transformer, respectively. It can be replaced by the receiving module (8).

In this way, the main controller 1 receives the voltage values where the system voltages from each of the R-phase power line, S-phase power line, and T-phase power line of extra high voltage, high voltage, or low voltage are reduced, and It is possible to determine whether each T-phase power line is energized.

Meanwhile, the switchgear of the present invention may further include an outer door opening detection sensor (10). Specifically, the outer door opening detection sensor 10 can be installed in the switchboard to detect whether the outer door is open or closed.

The door of the switchgear of the present invention may have a double structure with an outer door and an inner door for the safety of workers, and the outer door opening detection sensor 10 detects whether the outer door is open or closed and opens and closes the outer door accordingly. A signal can be generated.

Preferably, when the outer door is opened, the outer door opening detection sensor 10 can generate a positive outer door opening/closing signal.

Additionally, the inner door open detection sensor can detect whether the inner door is open or closed and generate an inner door open/close signal accordingly.

Preferably, when the inner door is opened, the inner door opening detection sensor can generate a positive outer door opening/closing signal.

In one embodiment of the present invention, the outer door of the switchboard is provided with one or more outer door opening detection sensors (10), and the outer door opening/closing signal generated by each of the one or more outer door opening detection sensors (10) is transmitted to the sub-controller. After being collected in (4), it can be transmitted to the main controller (1).

The main controller 1 can determine whether the outer door is open or closed by comprehensively considering one or more outer door open/close signals generated by each of the one or more outer door open detection sensors 10.

Preferably, the main controller (1) can determine that the outer door is open when one or more of the one or more outer door open/close signals generated by each of the one or more outer door open/close sensors (10) is positive. there is.

In this way, in one embodiment of the present invention, an outer door opening detection sensor 10 is additionally provided, so that an outer door opening/closing signal is generated even if any one of the outer door opening detection sensors 10 is damaged or malfunctions. You can.

Likewise, the inner door of the switchboard is provided with one or more inner door opening detection sensors, and after the inner door opening/closing signals generated by each of the one or more inner door opening detection sensors are collected by the sub-controller (4), the main controller ( 1) can be sent.

The main controller 1 may determine whether the inner door is open or closed by comprehensively considering one or more inner door open/close signals generated by each of the one or more inner door open/close sensors.

Preferably, the main controller 1 may determine that the inner door is open when at least one of the one or more inner door open/close signals generated by each of the one or more inner door open/close sensors is positive.

In this way, in one embodiment of the present invention, an inner door opening detection sensor is additionally provided, so that an outer door opening/closing signal can be generated even if any one of the inner door opening detection sensors is damaged or malfunctions.

Meanwhile, the switchgear of the present invention may further include an approach detection sensor (3). Specifically, the approach detection sensor 3 is installed inside the inner door of the switchboard and can detect whether an object (preferably a worker) enters the inner space of the switchgear inner door.

As described above, the switchgear of the present invention has a double structure having an outer door and an inner door, and an approach detection sensor 3 can be installed in the inner space of the inner door. In other words, the approach detection sensor 3 can detect whether the worker opens the inner door and enters the inner space of the inner door.

In one embodiment of the present invention, the approach detection sensor 3 includes a pair of infrared light receiving units and an infrared light emitting unit, and is installed on both sides of the inner space of the inner door so that the infrared light receiving units and the infrared light emitting units face each other, so that the infrared light receiving units and the infrared light emitting units face each other. Objects between light emitting units can be detected.

For example, by installing the infrared light receiving unit and the infrared emitting unit to face each other on the left and right sides of the inner space of the inner door, it is possible to detect workers entering the inner space through the inner door.

In one embodiment of the present invention, the inner door of the switchboard is equipped with one or more approach detection sensors (3), and the approach detection signals generated by each of the one or more approach detection sensors (3) are collected by the sub-controller (4) After that, it can be transmitted to the main controller (1).

Meanwhile, internal space may refer to a space where electrical equipment such as busbars and circuit breakers are provided inside the switchgear.

Meanwhile, as described above, the sub-controller (4) receives signals (outer door opening/closing signal, inner door opening/closing signal, Opening/closing signals and approach detection signals) can be collected and transmitted to the main controller (1).

In summary, the main controller (1) provides the reduced voltage value of the R-phase power line, S-phase power line, and T-phase power line, the outer door open/close signal for whether the outer door of the switchgear is opened or closed, and the inner door of the switchgear is opened/closed. An inner door opening/closing signal and an approach detection signal for whether a worker has entered the inner door of the switchgear can be received through each device and sensor, and based on the signals, when the switchboard is energized, the door It is opened and closed, and step-by-step alarm information can be generated when the worker approaches.

Meanwhile, the main controller 1 may include its own output devices for outputting step-by-step alarm information. Specifically, the main controller 1 can output step-by-step alarm information through an output device including one or more of an alarm information indicator, a voice output device, and a buzzer.

Additionally, the main controller 1 may further include a communication module (not shown) that performs communication with an external terminal. Specifically, the main controller 1 can enable the external terminal to independently output step-by-step alarm information through communication with the external terminal.

In one embodiment of the present invention, the external terminal may be a device including one or more of a desktop, laptop, tablet, and smartphone. Specifically, the step-by-step alarm information output by the main controller 1 can be output in various forms, such as visual or auditory information, from an external terminal equipped with its own output device (display panel, speaker, etc.).

Alternatively, in one embodiment of the present invention, the external terminal may be a watch terminal, and the communication module (not shown) may be a BLE communication module. Specifically, a watch terminal is a wearable electronic device that can be worn and carried by a worker, and the main controller 1 can perform BLE communication with the watch terminal to output step-by-step alarm information from the watch terminal.

In other words, workers can receive step-by-step alarm information not only through the main controller (1) provided in the switchboard, but also through the external terminal they carry.

In one embodiment of the present invention, the watch terminal itself can output alarm information differently depending on the level of the alarm information, including a display output function, a voice output function, and a vibration function.

Meanwhile, the switchgear of the present invention further provides the function of detecting an earthquake and outputting an earthquake detection signal for the intensity of earthquake vibration and the type of earthquake. Specifically, the earthquake detection sensor 11 can detect an earthquake, measure the intensity of earthquake vibration, and determine the type of earthquake according to the intensity of the earthquake vibration.

In one embodiment of the present invention, the unit of intensity of earthquake vibration may be gal. In other words, the earthquake detection sensor 11 determines the earthquake type as a P wave when the intensity (gal) of the seismic vibration of the detected earthquake is 10 gal or less, and when the intensity (gal) of the seismic vibration exceeds 10 gal, the earthquake type is determined. It can be determined by S waves, and an earthquake detection signal including the intensity of earthquake vibration and the type of earthquake can be transmitted to the main controller (1).

The main controller (1) can display the earthquake detection signal received from the earthquake detection sensor (11) in stages. For example, the main controller (1) outputs the first earthquake warning for an earthquake whose intensity is less than 10 gal and the earthquake type is P wave, and for an earthquake whose intensity is more than 10 gal and less than 20 gal and the earthquake type is S wave. A 2nd earthquake warning is issued, and a 3rd earthquake warning is issued for earthquakes where the intensity of the seismic vibration exceeds 20 gal and less than 150 gal and the earthquake type is S-wave. For earthquakes where the intensity of the seismic vibration exceeds 250 gal and the earthquake type is S-wave, a 3rd earthquake warning is issued. For this reason, the 4th earthquake warning can be output.

Preferably, the type of earthquake is S-wave, and the greater the intensity of the earthquake vibration, the higher the level of warning can be output.

Meanwhile, the switchgear of the present invention further provides a function of detecting partial discharge occurring inside the switchgear, determining the discharge amount, type, cause of partial discharge, risk, etc. of the partial discharge, and providing information about the same. Specifically, the partial discharge diagnosis module 12 is capable of detecting and diagnosing the occurrence of partial discharge, discharge amount, type, etc. based on the UHF signal generated internally, and outputs the relevant information through an output device that is provided internally. Alternatively, the information can be output by sending it to the main controller (1) or an external terminal.

A detailed description of the partial discharge diagnosis module 12 will be provided later.

Figure 2 shows a circuit diagram until the voltage stepped down from an extra-high voltage or high-voltage power line is transmitted to the main controller 1 according to an embodiment of the present invention.

As described above, when the system voltage is high voltage or extra-high voltage, the main controller (1) detects the voltage from the voltage detection device (5) or the instrument transformer (7) on each of the R-phase power line, S-phase power line, and T-phase power line. The grid voltage can receive a reduced voltage value.

Specifically, the system voltage can be stepped down by three voltage detection devices (5) provided on each of the R-phase power line, S-phase power line, and T-phase power line, and the step-down voltage output from each of the three voltage detection devices (5) The voltage value can be collected by one voltage detection device receiving module (6). In addition, the voltage detection device receiving module 6 can transmit the voltage value of the reduced system voltage in each of the R-phase power line, S-phase power line, and T-phase power line to the main controller (1).

The main controller (1) is connected to the R-phase power line, S-phase power line, and T-phase power line based on the voltage value of the reduced system voltage in each of the high-voltage or extra-high voltage R-phase power line, S-phase power line, and T-phase power line. It is possible to determine whether or not electricity is applied to the power supply.

Meanwhile, the switchgear of the present invention may further include an energization status LED output module (9) that outputs whether the R-phase power line, S-phase power line, and T-phase power line are energized independently of the main controller (1). Specifically, the energized state LED output module (9) is connected in parallel with the main controller (1) and the voltage detection device receiving module (6), so that even if a problem occurs in the main controller (1), the R-phase power line, Whether or not each of the S-phase power line and T-phase power line is energized can be indicated by three LED lamps (90). That is, the energized state LED output module 9 can output the LED lamp 90 by driving the power input from the three voltage detection devices 5 to the voltage detection device reception module 6.

Meanwhile, electrically, the voltage detection device 5 may be located after the lightning arrester. Specifically, in an extra-high voltage or high-voltage power system, a lightning arrester is provided between the load switch (LBS) and the instrument transformer (MOF), and the electrical equipment (MOF, VCB, etc.) provided at the rear of the lightning arrester can be protected by the lightning arrester.

The voltage detection device 5 of the present invention is located after the primary side of the lightning arrester and the secondary side of the load switchgear (LBS), and can be protected from external abnormal voltage by the lightning arrester. Specifically, the voltage detection device 5 is located at the rear of the lightning arrester and can be protected from lightning surges, switching surges, etc.

Figure 3 shows a circuit diagram until the voltage stepped down from the low-voltage power line is transmitted to the main controller 1 according to an embodiment of the present invention.

As described above, when the grid voltage is low, the main controller (1) receives the voltage value in which the grid voltages in each of the R-phase power line, S-phase power line, and T-phase power line are stepped down from the instrument transformer (7). You can.

Specifically, the system voltage can be stepped down by three instrument transformers (7) provided in each of the R-phase power line, S-phase power line, and T-phase power line, and the secondary voltage value of each of the three instrument transformers (7) These can be collected into one instrument transformer receiving module (8). In addition, the instrument transformer receiving module (8) can transmit the voltage value of the reduced system voltage in each of the R-phase power line, S-phase power line, and T-phase power line to the main controller (1).

In this way, the switchgear of the present invention determines whether the R-phase power line, S-phase power line, and T-phase power line are energized by using the secondary voltage value of the instrument transformer (7) provided to measure the amount of power while minimizing the addition of equipment. Alarm information based on can be output.

Also, as shown, in one implementation of the present invention, when the grid voltage is low, the energized state LED output module 9 may not be provided. In other words, the energized status LED output module (9) is not provided in power systems of all voltage types, but is provided in extra-high voltage or high-voltage power systems that have a relatively high accident probability and ripple effect in the event of an accident, cost-effectively improving worker safety. and accidents can be prevented.

Figure 4 shows the process of generating step-by-step alarm information by the main controller 1 according to an embodiment of the present invention.

As shown in FIG. 4, the main controller 1 operates the R-phase power line, S-phase power line, and T-phase power line, respectively, based on the voltage values received from the voltage detection device 5 and the instrument transformer 7. When one or more of the energization status for each of the R-phase power line, S-phase power line, and T-phase power line is determined as positive, first alarm information is generated, and one or more of the energization status for each of the R-phase power line, S-phase power line, and T-phase power line is determined as positive, and , when the outer door opening/closing signal is derived as positive, second alarm information of a higher level than the first alarm information is generated, and whether or not each of the R-phase power line, S-phase power line, and T-phase power line is energized is determined. When at least one is derived as positive, the outer door opening/closing signal is derived as positive, and the inner door opening/closing signal is derived as positive, third alarm information of a higher level than the first alarm information and the second alarm information is transmitted. Generate, and one or more of the energization of each of the R-phase power line, S-phase power line, and T-phase power line is derived as positive, the outer door opening/closing signal is derived as positive, and the inner door opening/closing signal is derived as positive. And when the approach detection signal is positive, fourth alarm information of a higher level than the first alarm information and the second alarm information can be generated.

In addition, the step-by-step alarm information may be output through an output device including one or more of a voice output device, a buzzer, and an alarm information display provided in the main controller 1, and the alarm information may be displayed step by step. One or more of the information indicator lights, voice comments from the audio output device, whether or not the buzzer generates an alarm, and the cycle can be set differently.

Steps S1.1 to S9 show the steps performed until step-by-step alarm information is generated and output by the main controller 1 when an operator approaches an energized switchboard.

Specifically, in step S1.1, the main controller (1) determines the step-down voltage of the R-phase power line, S-phase power line, and T-phase power from the three voltage detection devices (5) or the instrument transformer (7). A value can be received. In other words, the main controller (1) determines whether or not each of the R-phase power line, S-phase power line, and T-phase power is energized based on the voltage value received from the voltage detection device (5) or the instrument transformer (7). You can.

In step S1.2, the main controller (1) receives an outer door opening/closing signal and an inner door opening/closing signal regarding whether the outer door and inner door are open/closed from each of the outer door open detection sensor 10 and the inner door open/closer sensor. can do. As described above, the switchgear of the present invention may have a double structure having an inner door and an outer door, and the outer door opening detection sensor 10 is provided on the outer door to positively open and close the outer door when the outer door is opened. A signal is generated and transmitted to the main controller (1), and the inner door open detection sensor is provided on the inner door to generate a positive inner door open/close signal when the inner door is opened and transmit it to the main controller (1).

That is, the main controller 1 can determine whether the outer door is open or closed based on the outer door open/close signal received from the outer door open/close sensor 10, and the inner door open/close signal received from the inner door open/close sensor. Based on this, it is possible to determine whether the inner door is open or closed.

In step S1.3, the main controller (1) can receive an approach detection signal from the approach detection sensor (3). As described above, the approach detection sensor 3 includes a pair of infrared light receiving units and an infrared light emitting unit installed opposite each other in the inner space of the inner door of the switchgear, and detects objects (preferably workers) between the infrared light receiving units and the infrared light emitting units. By detecting the body, it is possible to determine whether the worker is located inside the switchgear.

In step S2, the main controller (1) determines whether or not each of the R-phase power line, S-phase power line, and T-phase power line is energized, and in step S3.2, any one of the R-phase power line, S-phase power line, and T-phase power line When the abnormality is energized, first alarm information can be generated and output.

Additionally, the first alarm information may be output through an output device provided by the main controller (1) itself, or may be output through an external terminal capable of communicating with the main controller (1).

Meanwhile, in step S3.1, whether the R-phase power line, S-phase power line, and T-phase power line are energized can be displayed by the energization status LED output module 9. Specifically, as described above, the energized status LED output module (9), which operates independently of the main controller (1), has three voltage detection devices (5) connected to the R-phase power line, S-phase power line, and T-phase power line. By receiving the voltage value in which the grid voltage is reduced from each, independent of the first alarm information output from the main controller (1), the LED lamp ( 90).

In step S4, the main controller 1 determines whether the outer door opening/closing signal received from the outer door opening detection sensor 10 is positive, and if positive, generates second alarm information in step S5. You can. Specifically, the main controller (1) generates a second alarm when it receives a positive outer door opening/closing signal in a state where one or more of the R-phase power line, S-phase power line, and T-phase power line are judged to be energized in step S2. Information can be generated and output.

That is, the second alarm information can be output when the worker opens the outer door of the switchgear while one or more of the R-phase power line, S-phase power line, and T-phase power line are energized.

Likewise, the second alarm information may be output through an output device provided by the main controller 1, or may be output through an external terminal capable of communicating with the main controller 1.

In step S6, the main controller 1 determines whether the inner door opening/closing signal received from the inner door opening detection sensor is positive, and if positive, generates third alarm information in step S7. Specifically, the main controller (1) receives a positive outer door opening/closing signal in a state where one or more of the R-phase power line, S-phase power line, and T-phase power line is judged to be energized in step S2, and opens the positive inner door. When receiving an opening/closing signal, third alarm information can be generated and output.

That is, the third alarm information can be output when one or more of the R-phase power line, S-phase power line, and T-phase power line is energized and the worker opens the outer door of the switchgear and then opens the inner door again.

Likewise, the third alarm information may be output through an output device provided by the main controller 1, or may be output through an external terminal capable of communicating with the main controller 1.

In step S8, the main controller 1 determines whether the approach detection signal received from the approach detection sensor 3 is positive, and if positive, can generate fourth alarm information in step S9. Specifically, the main controller (1) determines that at least one of the R-phase power line, S-phase power line, and T-phase power line is energized in step S2, receives a positive outer door opening/closing signal in step S4, and receives a positive outer door opening/closing signal in step S6. Fourth alarm information can be generated when a positive inner door opening/closing signal is received and a positive approach detection signal is received in step S8.

In other words, the fourth alarm information is that when at least one of the R-phase power line, S-phase power line, and T-phase power line is energized, the worker opens the outer door of the switchgear, and then opens the inner door again, allowing the worker to enter the inner space of the inner door. It can be printed when accessed.

Likewise, the fourth alarm information may be output through an output device provided by the main controller 1 itself, or may be output through an external terminal capable of communicating with the main controller 1.

In this way, the main controller 1 determines whether one or more of the R-phase power line, S-phase power line, and T-phase power line are energized, whether the outer door is open, whether the inner door is open, and the inner space of the inner door. Alarm information can be generated step by step for situations with high accident probability and high risk, depending on whether the worker approaches.

Meanwhile, as the level of alarm information increases, the output method can be set differently so that the operator can more intuitively recognize the situation. Specifically, when the first alarm information is output, the voice output device outputs a voice message such as "Electrification is on. Please do not approach as it is dangerous," and the buzzer alarm is set to not occur, and the second alarm information is output. When the voice output device is set to output a voice message such as "Electrification is in progress. The door is open," a buzzer alarm is set to sound, and "Electrity is in progress. It is dangerous, so please get away from the panel immediately. The charging protection cover is open. ." When the voice message is output, a buzzer alarm is set to occur, and when the fourth alarm information is output, the voice output device outputs a voice message such as "Electrification is in progress. Please move away from the charging part immediately. There is a risk of electric shock." You can set the buzzer alarm to occur at a rapid cycle.

In this way, workers can perceive the current situation more intuitively and clearly through voice comments that are output differently depending on the probability of accident and risk, whether or not a buzzer alarm occurs, and the cycle, etc.

Figure 5 shows the voltage reduced from a high-voltage or extra-high-voltage power line by the voltage detection device 5 according to an embodiment of the present invention until it is transmitted to the main controller 1 and the energized status LED output module 9. A circuit diagram is shown.

As shown in FIG. 5, the voltage detection device 5 includes a first fastener 500 that is bolted to the busbar and to which the system voltage is applied, and an upper metal bar 50 made of a cylindrical conductive metal. ); An internal lead line (51) electrically connected to the upper metal bar (50) and including two capacitors connected in series; A signal output port 52 outputs a voltage value in which the system voltage applied to the first fastener 500 is stepped down between the connection portions of the two capacitors; A grounding port 53 to which a ground line for the voltage detection device 5 is connected on the secondary side of the capacitor located at the terminal end of the two capacitors; and one or more second fasteners 540 bolted to the structure of the switchgear, including the upper metal bar 50, the internal lead line 51, the signal output port 52, and the grounding port 53. a lower metal bar (54) that is electrically independent and is made of cylindrical metal of a shape corresponding to the upper metal bar (50); And the upper metal bar 50, the internal lead line 51, and the lower metal bar 54 are molded with an epoxy material to form the external shape of the voltage detection device 5, and a plurality of shade shapes are formed along the outer peripheral surface. It may include an insulating exterior material 55 that includes a.

In addition, the voltage detection device 5 is electrically located after the primary side of the lightning arrester and the secondary side of the load switchgear (LBS), and is protected by the lightning arrester when an external abnormal voltage occurs, and physically, the voltage detection device The busbar is bolted to the first fastener 500 formed on the upper surface of (5), and the second fastener 540 formed on the lower surface of the voltage detection device 5 is bolted between the structure of the switchboard. Thus, the busbar can be supported between the busbar and the switchgear structure.

In addition, the switchboard includes three LED lamps (90) driven by power output from the signal output ports (52) of each of the three voltage detection devices (5), and the main controller (1) It further includes an energization status LED output module (9) that can electrically display whether or not each of the R-phase power line, S-phase power line, and T-phase power line is energized even if an operation error occurs, and the energization state The LED output module (9) is connected in parallel with the main controller (1) and supplies electricity to each of the R-phase power line, S-phase power line, and T-phase power line independently of the alarm information output from the main controller (1). This can be indicated by the LED lamp 90.

As described above, the voltage value obtained by reducing the high voltage or extra-high voltage system voltage by the voltage detection device 5 can be transmitted to the main controller 1 through the voltage detection device receiving module 6.

Specifically, as shown in FIG. 5, the internal circuit of the voltage detection device 5 may include two capacitors connected in series, and the voltage value between the two capacitors is determined through the signal output port 52. can be printed.

Preferably, the signal output port 52 may output a voltage value obtained by dropping the system voltage applied through the first fastener 500 according to [Equation 1] below.

[Equation 1]

(Here, V _out is the voltage value output from the signal output port 52, V _in is the system voltage applied through the first fastener 500, and C ₁ is the first fastener 500 of the internal lead line 51. Capacitance of the first capacitor on the side, C ₂ is the capacitance of the second capacitor on the ground port (53) side of the internal lead line (51)

In this way, each of the three voltage detection devices 5 steps down the system voltage from each of the R-phase power line, S-phase power line, and T-phase power line and outputs it to the signal output port 52, and the corresponding voltage values are converted into one voltage. After being transmitted to the detection device receiving module (6), it can be finally transmitted to the main controller (1).

Meanwhile, as shown, the voltage value output from the signal output port 52 of each of the three voltage detection devices 5 can also be applied to the energization status LED output module 9. The energized state LED output module 9 may include a plurality of LED lamps 90 driven by power output from the signal output port 52 of the voltage detection device 5, and each of the plurality of LED lamps 90 By , whether the R-phase power line, S-phase power line, and T-phase power line are energized can be indicated.

Preferably, the energized state LED output module 9 includes three LED lamps 90 corresponding to each of the R-phase power line, S-phase power line, and T-phase power line, and each of the three LED lamps 90 corresponds to the R-phase power line. It can be driven by power output from the signal output port 52 of each of the three voltage detection devices 5 connected to each of the power line, S-phase power line, and T-phase power line.

In this way, the three LED lamps 90 inside the energized state LED output module 9 can be driven with power output from the signal output port 52 of the voltage detection device 5.

In other words, the energized status LED output module (9) is connected to other components (external door opening detection sensor (10), approach detection sensor (3), discharge diagnosis module, earthquake detection sensor (11) connected to the main controller (1). etc.) are operated independently from each other, so that even if a problem occurs in the main controller (1) or any one of the plurality of components connected to the main controller (1), the R-phase power line, S-phase power line, and T It is possible to electrically indicate whether each phase power line is energized.

In addition, the main controller (1) is a computing device that includes one or more processors and one or more memories. It synthesizes information received from a plurality of sensors through its own algorithm and generates a step-by-step alarm as the operator approaches an energized switchboard. can be created and output.

On the other hand, the energized state LED output module 9 is an LED lamp 90 that is turned on/off by the power itself output from the signal output port 52 of the voltage detection device 5 without a separate calculation process by a computing device. Through this, it is possible to indicate whether the R-phase power line, S-phase power line, and T-phase power line are energized. In other words, the energized status LED output module (9) is connected in parallel with the main controller (1) and operates independently, so that even in situations where alarm information is not output from the main controller (1) due to an operation error, etc., the R-phase power line, It is possible to indicate whether the S-phase power line and T-phase power line are energized.

Meanwhile, each of the three voltage detection devices 5 may be grounded through the grounding hole 53 of each voltage detection device 5.

Figure 6 shows a voltage detection device 5 according to an embodiment of the present invention.

Figure 6 (a) shows the overall appearance of the voltage detection device 5, (b) shows a cross-sectional view, (c) shows a top view, and (d) shows a bottom view.

The voltage detection device 5 includes a cylindrical upper metal bar 50 on the upper side, and the bus bar and the upper metal bar 50 are connected to each other through a first fastener 500 formed on the upper metal bar 50. By being screwed together, the busbar and the voltage detection device 5 can be physically and electrically connected.

Specifically, as shown in Figures 6 (a) and (b), the upper metal bar 50 of the voltage detection device 5 has a first fastener ( 500), and the screw is inserted into and coupled to the first fastener 500 through a through hole formed in the busbar, so that the busbar and the voltage detection device 5 can be physically fastened.

In one embodiment of the present invention, as shown in (c) of FIG. 6, the first fastener 500 may be formed in the center of the upper metal bar 50.

Or, in another embodiment of the present invention, the upper metal bar 50 includes a plurality of first fasteners 500, and the voltage detection device ( 5) can be fastened to the busbar.

Meanwhile, the busbar, the upper metal bar 50, and the screw inserted into the first fastener 500 are all conductive materials, and the system voltage flowing through the busbar is transmitted through the screw and the first fastener 500. It can be conducted to the upper metal bar 50.

That is, the upper metal bar 50 and the bus bar are screwed together through the first fastener 500, so that the bus bar and the voltage detection device 5 can be electrically connected.

Meanwhile, an internal lead line 51 including two capacitors connected in series may extend below the upper metal bar 50. Additionally, a signal output port 52 that outputs a voltage in which the system voltage is stepped down may be formed between the connection portion between the two capacitors 510 and 511 of the internal lead line 51. That is, the signal output port 52 can output a voltage value applied to the capacitor 511 located at the terminal of the two capacitors, and the corresponding voltage value corresponds to the voltage value in which the system voltage is stepped down according to the voltage distribution law. You can.

As described above, the voltage value output through the signal output port 52 can be applied to the main controller 1 and the energized state LED output module 9 connected in parallel with the main controller 1, respectively.

In addition, a ground hole 53 capable of connecting a ground line to the voltage detection device 5 may be formed on the secondary side of the capacitor 511 located at the end of the two capacitors of the internal lead line 51. Specifically, by grounding through the grounding hole 53, insulation breakdown of the voltage detection device 5 can be prevented and reliability can be improved.

Meanwhile, the voltage detection device 5 may further include a function to physically support the busbar. Specifically, the voltage detection device 5 includes a cylindrical lower metal bar 54 on the lower side corresponding to the upper metal bar 50, and a second fastener 540 formed on the lower metal bar 54. ), the switchgear structure and the lower surface of the voltage detection device 5 are screwed together, so that the switchgear structure and the voltage detection device 5 can be physically coupled.

Specifically, as shown in (b) of FIG. 6, the lower metal bar 54 of the voltage detection device 5 includes a second fastener 540 with a screw groove formed on the inner peripheral surface so that a screw can be inserted. Then, the screw penetrates the through hole formed in the switchgear structure and is inserted into the second fastener 540 and coupled thereto, so that the switchgear structure and the voltage detection device 5 can be physically fastened.

In one embodiment of the present invention, as shown in (d) of FIG. 6, the lower metal bar 54 may include a plurality of second fasteners 540.

As a result, the upper surface of the voltage detection device 5 can be physically coupled to the bus bar by the first fastener 500 formed on the upper metal bar 50, and the lower surface can be coupled to the bus bar by the second fastener formed on the lower metal bar 54. It can be coupled to the internal structure of the switchboard through the sphere 540. That is, the voltage detection device 5 may be arranged so that its upper surface supports the busbar while its lower surface is fixed to the structure.

Typically, a busbar is a conductive metal bar made of copper or aluminum. In particular, the busbar that conducts high voltage and high current system voltage increases in weight and area. In other words, the busbar that conducts high voltage or extra-high voltage system voltage has a high weight, so it is necessary to firmly support the busbar physically.

As described above, the voltage detection device 5 of the present invention can electrically step down a high-voltage or extra-high-voltage system voltage and output it to the outside, and physically support a heavy busbar.

Meanwhile, in the voltage detection device 5 of the present invention, the upper surface to which the busbar is fastened and the lower surface to which the internal structure is fastened are electrically independent, thereby preventing leakage of high-voltage current flowing through the busbar.

Specifically, as shown in (b) of FIG. 6, the lower metal bar 54 is electrically independent from the upper metal bar 50, the internal lead line 51, the signal output port 52, and the ground port 53. It can be. Preferably, the insulating exterior material 55 that forms the overall appearance of the voltage detection device 5 is formed by molding the upper metal bar 50, the inner lead-in line 51, and the lower metal bar 54 with a non-conducting epoxy material. By forming, the lower metal bar 54 can be electrically independent from the upper metal bar 50, the internal lead line 51, the signal output port 52, and the ground port 53.

That is, the non-conducting insulating exterior material 55 insulates the upper metal bar 50, the internal lead line 51, and the lower metal bar 54 so that they are electrically separated, so that the voltage applied through the upper metal bar 50 Safety can be improved by preventing leakage through the lower metal bar 54, and as a result, current does not flow in the internal structure of the switchboard to which the lower metal bar 54 is fastened.

Additionally, as shown, the insulating exterior material 55 may include a plurality of shade shapes to improve insulating performance. Specifically, by having this form, the surface leakage distance can be increased and the dielectric strength of the voltage detection device 5 can be improved.

In summary, the voltage detection device 5 of the present invention can electrically output the voltage by stepping down the system voltage flowing through the busbar.

In addition, the voltage detection device 5 of the present invention is physically fastened on the lower surface to the internal structure of the switchgear and the busbar is supported on the upper surface, so that it can physically support the busbar. Additionally, since the upper and lower surfaces of the voltage detection device 5 are electrically independent from each other, the system voltage applied to the upper surface can be prevented from leaking to the lower surface.

Figure 7 shows the voltage detection device 5 according to an embodiment of the present invention physically supporting the busbar.

As shown in FIG. 7, the voltage detection device 5 is coupled to the lower side of the busbar and can physically support the lower side of the busbar. That is, the busbars for each of the R-phase power line, S-phase power line, and T-phase power line can be physically and firmly supported by each of the three voltage detection devices 5.

Also, although not shown, the voltage detection device 5 may be installed to support the busbar for the neutral wire. That is, without using the signal output port 52 of the voltage detection device 5 that supports the neutral line busbar, the neutral line busbar can be physically supported by placing the voltage detection device 5 between the neutral line busbar and the internal structure of the distribution board. You can.

8 to 10 show an outer door opening detection sensor 10 according to an embodiment of the present invention.

As shown in Figure 8, the outer door opening detection sensor 10 includes a container 100 in the form of a rectangular parallelepiped; Two wings 101 facing each other in the form of a plate with a portion of the upper surface of the container 100 protruding outward; A coupling pin (102) coupled through a hollow formed in each of the two wing portions (101); a support portion 103 that partially protrudes outward from the upper surface of the container 100 between the two wing portions 101 and on which a portion of the lower surface of the lever member 104 is disposed; A wheel 106 is coupled to one end, the other end is disposed on the upper surface of the support part 103, and the coupling pin 102 is coupled to a part between the one end and the other end, and serves as a lever. (104); An opening/closing sensor 105 located below the lever member 104 and measuring displacement due to the lever member 104 acting as a lever; and a spring 108 located on the lower side of the lever member 104, which is compressed and released as the lever member 104 acts as a lever. The lever member 104 is configured to open the outer door of the switchgear. When the outer door is in contact with the wheel 106, one end is pressed and acts as a force point, and the position where the coupling pin 102 is connected acts as a fulcrum and acts as a lever to be used by the lever member 104. The open/close sensor 105 is pressed to generate an outer door open/close signal, and part of the force pressing the one end to which the wheel 106 is coupled causes the wheel 106 to rotate, thereby preventing damage to the lever member 104. can be prevented.

As described above, the outer door opening detection sensor 10 of the present invention is installed on the outer door of the switchgear and can detect whether the outer door is open or closed.

Preferably, a plurality of outer door opening detection sensors 10 are installed on the outer door, and the outer door opening/closing signal generated by each outer door opening detection sensor 10 is collected by the sub-controller 4 and then connected to the main controller ( 1) can be sent.

Additionally, the inner door opening detection sensor of the present invention may correspond to the same sensor as the outer door opening detection sensor 10.

Figures 8 (a) and (b) show front views of the outer door opening detection sensor 10. As shown, the container 100 may be a rectangular parallelepiped-shaped member that forms the overall outline of the outer door opening detection sensor 10. Additionally, the container 100 may include a plurality of coupling holes 109 penetrating in a direction perpendicular to the longitudinal direction. Specifically, the outer door opening detection sensor 10 can be installed by screwing it to the internal structure of the switchboard through the corresponding coupling hole 109. Preferably, the outer door opening detection sensor 10 can be installed in the internal structure of the switchgear so that the wheel 106 is pressed when the outer door is opened.

A plurality of wings 101 may be formed on the upper surface of the container 100. Specifically, referring to Figures 9 and 10 (a), the two wings 101 are formed by flat members of corresponding shapes protruding outward on a portion of the front side and a portion of the rear side of the container 100. You can. Preferably, the two wings 101 are formed on the upper surface of the container 100, with flat members having a length corresponding to half of the longitudinal direction of the container 100 protruding outward on the front and rear sides, respectively. You can.

Additionally, a hollow may be formed in each of the two wing portions 101, and a coupling pin 102 may be coupled through the hollow.

Meanwhile, a portion of the upper surface of the container 100 protrudes outward between the two wing portions 101, and may include a support portion 103 on which a portion of the lower surface of the lever member 104 is disposed on the upper surface. . Specifically, referring to FIG. 9 , the support portion 103 may have a shape in which a portion of the upper surface of the container 100 protrudes outward in the space between the two wings 101 facing each other.

Meanwhile, the lever member 104 is disposed between the upper surface of the container 100 and the two wings 101, and the coupling pin 102 is coupled to a portion of the lever member 104 to act as a lever. Specifically, a wheel coupling portion 107 is formed on one end of the lever member 104, the wheel 106 is coupled to the wheel coupling portion 107, and the other end is disposed on the upper surface of the support portion 103, A coupling pin 102 may be coupled to a portion between one end and the other end, and the wheel 106 is pressed when the outer door is opened so that the lever member 104 acts as a lever. can be installed.

Meanwhile, an open/close sensor 105 and a spring 108 may be provided on the lower side of the lever member 104. Specifically, the open/close sensor 105 is located below the lever member 104 and can measure the displacement of the outer door as it is opened and pressed by the lever member 104 that acts as a lever. Preferably, the open/close sensor 105 is pressed by the lever member 104 as the outer door is opened, thereby generating a positive outer door open/close signal.

In one embodiment of the present invention, the open/close sensor 105 may be an LVDT sensor.

Meanwhile, as shown in Figures 10 (a) and (b), part of the open/close sensor 105 is disposed in the inner space of the container 100, and the part exposed to the outside is the lower side of the lever member 104. It may be arranged to be located in the space between the two wings 101.

That is, the upper side of the open/close sensor 105 is protected by the lever member 104, and the side is protected by the two wings 101, and the open/close sensor 105 is protected by an external force other than the lever member 104 that acts as a lever. (105) can be prevented from malfunctioning.

The spring 108 is located below the lever member 104 and can be compressed or released depending on the lever member 104 that acts as a lever. Specifically, one end of the spring 108 may be coupled to a portion of the lower surface of the lever member 104, and the other end may be received and coupled to the inner space of the container 100. Preferably, the spring 108 can be compressed by being pressed by the lever member 104 that acts as a lever when the outer door is opened, and can be relaxed again when the outer door is closed.

In this way, the spring 108 can restore the lever member 104, whose one end to which the wheel 106 is coupled, is pressed when the outer door is opened, to its initial state when the outer door is closed.

The outer door opening detection sensor 10, which includes components of this type, can detect whether the outer door is open or closed. Specifically, Figures 8(a) and Figure 9(a) show the outer door opening detection sensor 10 when the outer door is closed. As shown, when the outer door is closed, the spring 108 is relaxed, and the other end of the lever member 104 may be disposed on the upper surface of the support portion 103. Additionally, the open/close sensor 105 may be in a state where it is not pressed by the lever member 104.

Figures 8 (b) and Figure 9 (b) show the outer door opening detection sensor 10 when the outer door is open. Specifically, as the outer door is opened, the wheel 106 coupled to one end of the lever member 104 may be pressed. That is, one end of the lever member 104 to which the wheel 106 is coupled acts as a force point, the position to which the coupling pin 102 is coupled acts as a fulcrum, and the other end disposed on the upper surface of the support member 103 serves as an action point. While acting, the lever member 104 may act as a lever.

Also, at this time, the spring 108 disposed on the lower side of the lever member 104 is compressed, and the open/close sensor 105 is pressed, thereby generating a positive outer door open/close signal.

Meanwhile, part of the force applied to the wheel 106 by the opened outer door may cause the wheel 106 to rotate. Specifically, the outer door can be opened while rotating, and when the rotating outer door and one surface of the wheel 106 come into contact with each other and are pressed, the wheel 106 can rotate at the same time.

That is, when the outer door is opened, the wheel 106 rotates around the wheel coupling portion 107 and at the same time, one end of the lever member 104 to which the wheel 106 is coupled can be pressed. By opening the outer door in this way, part of the force applied to the wheel 106 rotates the wheel 106, thereby preventing damage to the lever member 104.

In addition, after the lever member 104 is pressed to the maximum range that can be pressed, the force applied by the opening outer door is distributed to the rotating wheel 106, and force continues to be applied to the lever member 104 that has been pressed to the maximum. The lever member 104 can be prevented from being deformed or damaged.

Figure 11 shows a plurality of outer door opening detection sensors 10 fastened through the coupling hole 109 according to an embodiment of the present invention.

As shown in Figure 11, the container 100 includes a plurality of coupling holes 109 formed to penetrate the container 100 in a direction perpendicular to the longitudinal direction, and a plurality of outer door open detection sensors ( 10) By arranging the coupling holes 109 formed in each to correspond to each other and bolting through the coupling holes 109 at corresponding positions, a plurality of outer door opening detection sensors 10 can be combined and installed.

As described above, the container 100, which forms the overall appearance of the outer door opening detection sensor 10, may include a plurality of coupling holes 109 penetrating in a direction perpendicular to the longitudinal direction, and the coupling holes ( The outer door opening detection sensor 10 can be installed in the distribution panel by combining the external door opening detection sensor 10 with the internal structure of the distribution panel through 109).

Meanwhile, as described above, the switchgear of the present invention may include a plurality of outer door open detection sensors 10, and whether the outer door of the switchgear is open can be detected by each of the plurality of outer door open detection sensors 10. there is.

In one embodiment of the present invention, when installing a plurality of outer door opening detection sensors 10, the plurality of outer door opening detection sensors 10 can be installed in combination to generate the same outer door opening/closing signal.

Specifically, the worker arranges the coupling holes 109 formed in each of the plurality of outer door opening detection sensors 10 to correspond to each other, and then connects the screw through the plurality of coupling holes 109, thereby opening the plurality of outer doors. The detection sensor (10) can be installed together.

In this way, the plurality of outer door opening detection sensors 10 are combined and installed together, so that when the outer door is opened, the same outer door opening/closing signal can be generated from each of the plurality of combined outer door opening detection sensors 10. . As a result, the main controller 1 can determine that the outer door is open when one or more of the outer door open/close signals received from each of the plurality of outer door open detection sensors 10 are positive.

Figure 12 shows steps performed by the partial discharge diagnosis module 12 according to an embodiment of the present invention.

As shown in FIG. 12, the switchgear includes a UHF receiver that receives a UHF signal generated inside the switchgear during partial discharge, and diagnoses whether partial discharge occurs inside the switchgear, the amount, type, and risk of partial discharge, It further includes a partial discharge diagnosis module (12), wherein the partial discharge diagnosis module (12) receives a UHF signal through a UHF receiver, synchronizes the received UHF signal to 60Hz or 50Hz, and accumulates it at a preset period. step; Determining the occurrence density of partial discharges based on the amount of discharge of UHF signals accumulated at a preset period; Determining the type of partial discharge based on the pattern of the UHF signal accumulated at a preset period, and determining the cause of the partial discharge among components inside the switchgear based on the determined type; Calculating a risk that quantifies the predicted time until an accident occurs and the accident probability when the currently occurring partial discharge continues; and displaying the derived occurrence density, type, and risk of the partial discharge.

In addition, the partial discharge diagnosis module further includes the step of determining a state level for partial discharge in a plurality of stages based on the occurrence density of the partial discharge, and when the state level of the lowest stage is derived, It may be characterized by not performing the step of calculating the risk.

As described above, the main controller 1 further provides a function of detecting partial discharge occurring inside the switchgear and providing information about it, and this can be performed by the partial discharge diagnosis module 12. Specifically, when a partial discharge occurs inside a switchgear, various signals may be generated, and the partial discharge diagnosis module 12 is based on a UHF signal (Ultra High Frequency) that occurs from the beginning of the partial discharge and can be measured. Thus, it is possible to comprehensively determine whether partial discharge occurs inside the switchgear, the amount of discharge, type, and cause of partial discharge.

In one embodiment of the present invention, the UHF receiver may be a UHF antenna built into the partial discharge diagnosis module 12 or a UHF antenna connected to the partial discharge diagnosis module 12 by wire.

In step S10, the partial discharge diagnosis module 12 may receive the UHF signal and accumulate it at a preset period.

First, referring to FIG. 13, the bar graph on the upper side may represent a UHF signal measured in time series by the UHF receiver. That is, in the example case, the UHF signal measured over three periods is shown. At this time, the size of each bar graph is the size of the UHF signal and can mean the size of the discharge amount.

The partial discharge diagnosis module 12 can accumulate UHF signals recorded in time series by synchronizing them with AC 60Hz or 50Hz signals. Referring again to FIG. 13, the partial discharge diagnosis module 12 can accumulate UHF signals measured over three cycles into one cycle.

In one embodiment of the present invention, the preset period may correspond to one period of a 60Hz signal. That is, the UHF signal measured during 60 cycles of 1 second of the partial discharge diagnosis module 12 can be accumulated in one cycle (1/60 second).

That is, the UHF signal measured in time series in FIG. 13 is synchronized with the 60Hz signal, so that the UHF signal for 3 periods can be accumulated in 1 period. In addition, it can be seen that a continuous signal is generated in a specific band through UHF signals accumulated at a preset period.

Or, in another embodiment of the present invention, the preset period may correspond to one period of a 50Hz signal. That is, the UHF signal measured during 50 cycles of 1 second of the partial discharge diagnosis module 12 can be accumulated in one cycle (1/50 second).

In step S11, the partial discharge diagnosis module 12 may determine the occurrence density of partial discharge based on the cumulative value of the magnitude of the UHF signal accumulated at a preset period. As described above, the size of the UHF signal can mean the size of the discharge amount, and based on the cumulative value of the discharge amount accumulated during a preset period, the occurrence density of partial discharge occurring inside the switchgear can be determined. .

For example, in the lower graph of FIG. 13, the total area of the UHF signals accumulated in one cycle may correspond to the accumulated value of the discharge amount, and the occurrence density is the UHF accumulated for 1 second (60 cycles) for the 60Hz signal. It may correspond to the ratio of the total area to the signal.

The partial discharge diagnosis module 12 may determine that a partial discharge has occurred inside the switchboard when the derived generation density exceeds a preset standard.

In one embodiment of the present invention, the partial discharge diagnosis module 12 may determine the state level for partial discharge into a plurality of stages based on the calculated occurrence density of partial discharge. Specifically, the partial discharge diagnosis module 12 can determine the lowest level of LV1 when the occurrence density of partial discharge is less than 20%, LV2 when it is 20% or more and less than 50%, and LV2 when the occurrence density of partial discharge is less than 50%. In this case, it can be judged as the highest level, LV3.

Additionally, when the lowest state level is derived, the partial discharge diagnosis module 12 may not perform subsequent steps to determine the type of partial discharge, cause of partial discharge, and risk. In other words, if the occurrence density of partial discharge is less than 20%, it is determined that no partial discharge has occurred and the subsequent steps to determine the type of partial discharge, cause of partial discharge, and risk are not performed, thereby reducing the amount of data calculation. can do.

In step S12, the partial discharge diagnosis module 12 can determine the type of partial discharge and the cause of the partial discharge. Specifically, the partial discharge diagnosis module 12 may store information about the pattern of the UHF signal measured when the corresponding type of partial discharge occurs for each type of partial discharge: void, floating, and corona.

That is, in the partial discharge diagnosis module 12, the UHF signal measured when each partial discharge of void, floating, and corona occurs is synchronized to 60Hz or 50Hz, and samples of the UHF signal pattern accumulated at a preset period may be stored. there is.

Specifically, the partial discharge diagnosis module 12 compares the pattern of the UHF signal synchronized to 60Hz or 50Hz in step S10 and accumulated at a preset period with the pattern of the UHF signal previously stored for each type of partial discharge, and It is possible to determine what type of partial discharge is occurring internally.

Preferably, the partial discharge diagnosis module 12 compares the pattern of the accumulated UHF signal with the pattern of the UHF signal stored for each type of partial discharge, derives the degree of similarity for each type of partial discharge, and selects the partial discharge with the highest similarity. The type can be determined by the type of partial discharge currently occurring.

In one embodiment of the present invention, the partial discharge diagnosis module 12 may use a known algorithm to compare differences between data. Alternatively, the partial discharge diagnosis module 12 may include a learned machine learning model that compares differences between data.

Meanwhile, the partial discharge diagnosis module 12 can determine the cause of the partial discharge based on the type of partial discharge determined. Specifically, the partial discharge diagnosis module 12 determines the cause of the partial discharge to be epoxy when the type of partial discharge is determined to be a void, and when the type of partial discharge is determined to be floating, the partial discharge diagnosis module 12 determines the cause of the partial discharge to be a connection between metals, If it is determined to be a corona, the cause of the partial discharge can be determined to be the connection between epoxy and metal.

In this way, the partial discharge diagnosis module 12 determines the cause of the partial discharge according to the type of partial discharge and provides information about this to the worker, so that when a partial discharge occurs, the worker is connected to a plurality of electrical equipment entering the switchgear. By first inspecting electrical equipment corresponding to the cause of partial discharge diagnosed by the partial discharge diagnosis module 12, more efficient repair work may be possible.

In step S13, the partial discharge diagnosis module 12 can calculate the risk of partial discharge. Specifically, risk can be information that quantifies the predicted time and accident probability until an accident occurs when the current partial discharge continues.

Specifically, the partial discharge diagnosis module 12 can calculate the predicted time until an accident occurs and the accident probability by comprehensively determining the size, duration, and type of the partial discharge previously measured or determined.

A detailed description of the process by which the partial discharge diagnosis module 12 determines the degree of risk will be described later.

In step S14, the partial discharge diagnosis module 12 may display information measured or determined in the previous step. Specifically, the partial discharge diagnosis module 12 displays the relevant information through its own display, speaker, etc., or transmits the relevant information to the main controller 1 connected wired or wirelessly and displays the relevant information by the main controller 1. can be displayed.

Figure 13 shows patterns for each type of partial discharge according to an embodiment of the present invention.

Figure 13 (a) shows the pattern of the UHF signal measured when floating discharge occurs inside the switchgear. As shown, when floating discharge occurs, a discharge amount of relatively uniform size occurs intermittently, so the overall shape of the pattern of the UHF signal may be rectangular.

In the partial discharge diagnosis module 12, this type of data can be labeled as floating discharge and pre-stored, and the pattern of the accumulated UHF signal by synchronizing the UHF signal received from the UHF receiver to 60 Hz or 50 Hz is pre-stored as a floating discharge. In a case similar to the pattern, it can be determined that floating discharge is currently occurring inside the switchgear. Additionally, the partial discharge diagnosis module 12 may determine the connection between metals to be the cause of the partial discharge when floating discharge occurs.

Preferably, the similarity between the pattern of the accumulated UHF signal and the pattern for floating discharge is calculated, and if the calculated similarity is higher than the similarity for each of the other partial discharge types (void, corona), finally floating inside the switchgear. It can be determined that a discharge occurs.

Figure 13 (b) shows the pattern of the UHF signal measured when corona discharge occurs inside the switchgear. As shown, when a corona discharge occurs, the discharge amount in case of negative polarity may be greater than the amount of discharge in case of positive polarity. In addition, discharge amounts of different sizes can be measured in case of negative polarity and positive polarity.

This type of data can be labeled as corona discharge and pre-stored in the partial discharge diagnosis module 12, and the pattern of the accumulated UHF signal by synchronizing the UHF signal received from the UHF receiver to 60Hz or 50Hz is pre-stored as corona discharge. In cases similar to the pattern, it can be determined that corona discharge is currently occurring inside the switchgear. Additionally, the partial discharge diagnosis module 12 may determine that the connection between epoxy and metal is the cause of the partial discharge when corona discharge occurs.

Preferably, the similarity between the pattern of the accumulated UHF signal and the pattern for the corona discharge is calculated, and if the calculated similarity is higher than the similarity for each of the other partial discharge types (void, floating), the corona discharge is finally detected inside the switchgear. It can be determined that a discharge occurs.

Figure 13 (c) shows the pattern of the UHF signal measured when void discharge occurs inside the switchgear. As shown, when void discharge occurs, the discharge amount can be measured when most of the discharge is of positive polarity. Also, when in negative polarity, discharge amounts of different sizes can be measured.

In the partial discharge diagnosis module 12, this type of data can be labeled as void discharge and pre-stored, and the pattern of the accumulated UHF signal by synchronizing the UHF signal received from the UHF receiver to 60 Hz or 50 Hz is pre-stored in the void discharge. In a case similar to the pattern, it can be determined that void discharge is currently occurring inside the switchgear. Additionally, the partial discharge diagnosis module 12 can determine that electrical equipment made of epoxy material is the cause of the partial discharge when void discharge occurs.

Preferably, the similarity between the pattern of the accumulated UHF signal and the pattern for the void discharge is calculated, and if the calculated similarity is higher than the similarity for each of the other partial discharge types (corona, floating), the void is finally formed inside the switchgear. It can be determined that a discharge occurs.

In this way, the partial discharge diagnosis module 12 can store the pattern of the UHF signal when the corresponding type of partial discharge occurs for each type of partial discharge, and compares the previously stored information with the pattern of the measured UHF signal, It is possible to determine the type and cause of partial discharge currently occurring in the switchboard.

Figure 14 shows a process for calculating the risk of partial discharge according to an embodiment of the present invention.

As shown in FIG. 14, the accident probability is proportional to the size and duration of the partial discharge, and if the type of partial discharge is floating, a first weight is given, and in the case of corona, the first weight is given. A higher second weight is assigned, and in the case of a void, a third weight higher than the first weight and the second weight may be assigned and calculated.

The partial discharge diagnosis module 12 can calculate the risk until an accident occurs when the currently occurring partial discharge continues. Specifically, the risk level may be information that quantifies the accident probability and time until an accident occurs when the currently occurring partial discharge continues.

Meanwhile, the accident probability can be calculated in proportion to the size of the partial discharge. In other words, the larger the size of the UHF signal received from the UHF receiver, the higher the accident probability can be calculated.

Additionally, the accident probability can be calculated in proportion to the duration of partial discharge. In other words, when UHF signals above a certain size are continuously measured, the probability of an accident can be calculated to be high.

Meanwhile, the partial discharge diagnosis module 12 can calculate the accident probability while assigning different weights to each type of partial discharge determined. Specifically, the partial discharge diagnosis module 12 assigns a first weight of the lowest value when the type of partial discharge is determined to be floating, and assigns a second weight when the type of partial discharge is determined to be corona, If the type of partial discharge is determined to be void, the accident probability can be calculated by assigning the third weight of the highest value.

In this way, the partial discharge diagnosis module 12 can calculate the accident probability differently depending on the type of partial discharge determined according to the pattern of the UHF signal even if a UHF signal of the same size and duration is generated.

In summary, the partial discharge diagnosis module 12 calculates the accident probability by comprehensively considering the size, duration, and type of partial discharge. In the case of corona discharge, it is assumed to be the lowest risk situation, and in the case of floating discharge, it is assumed to be the lowest risk situation. In the case of void discharge, it is assumed to be a situation of medium risk, and in the case of void discharge, it is assumed to be a situation of highest risk, and the accident probability can be calculated.

In one embodiment of the present invention, the partial discharge diagnosis module 12 can preset the predicted time until an accident occurs and calculate the probability of an accident occurring within that time. For example, the partial discharge diagnosis module 12 sets the predicted time until an accident occurs at 6 months, and calculates the accident probability by quantifying the probability that an accident will occur within 6 months when the currently occurring partial discharge continues. You can.

Figure 16 shows an interface displaying information about partial discharge according to an embodiment of the present invention.

As described above, the information measured or judged by the partial discharge diagnosis module 12 is transmitted to the output device provided in the partial discharge diagnosis module 12, or to the main controller 1. It can be displayed through an output device provided in the , or transmitted to an external terminal and displayed through an output device provided in the external terminal.

That is, the partial discharge diagnosis module 12 may have its own output device such as a display panel to display information about partial discharge, or may have a separate communication module to communicate with the main controller 1 or an external terminal. You can also display information about partial discharge on the device by performing .

Preferably, the state level, occurrence density, type, and risk of partial discharge measured or judged by the partial discharge diagnosis module 12 can be displayed on each of the plurality of layers through the display panel.

Figures 16 (a) and (b) show the interface displayed when partial discharge occurs. Specifically, Figure 16 (a) shows an interface in which partial discharge at the lowest state level occurs and the type and risk of partial discharge are not displayed in one embodiment of the present invention, and Figure 16 (b) shows In one embodiment of the present invention, an interface that displays the type and risk of partial discharge is shown.

Specifically, the Ll layer is a layer that displays the state level of partial discharge. As described above, the partial discharge diagnosis module 12 can determine the stage of the state level of partial discharge based on the occurrence density of partial discharge, and the determined The status level can be displayed in the L1 layer.

The L2 layer is a layer that displays the occurrence density of partial discharges. As described above, the partial discharge diagnosis module 12 calculates the occurrence density of partial discharges in numbers based on the cumulative value of the magnitude of the UHF signal accumulated at a preset period. This can be done, and the corresponding value can be displayed in the L2 layer.

Meanwhile, the L3 layer is a layer that displays the type of partial discharge and the cause of the partial discharge, and as described above, output can be determined depending on the state level of the partial discharge. Specifically, when the lowest state level is derived in (a) of FIG. 16, the partial discharge diagnosis module 12 determines the state as a normal state and performs the step of determining the type of partial discharge and the cause of the partial discharge. This may not be done, and as a result, no information may be displayed in the L3 layer when the state level is determined to be the lowest level.

On the other hand, as the state level is determined to be LV2 in (b) of FIG. 16, the type of partial discharge (corona) can be displayed on the L3 layer. In addition, although not shown, as the type of partial discharge is determined, the cause of the partial discharge (connection between epoxy and metal) may be displayed on the L3 layer.

The L4 layer is a layer that displays the risk of partial discharge, and the predicted time until an accident occurs and the accident probability can be displayed numerically. Also, as in the L3 layer, when the lowest state level is derived, the step of determining the risk of partial discharge is not performed and no information may be displayed in the L4 layer. That is, the probability of an accident occurring within 6 months in the L4 layer in (a) of Figure 16 may be 0% or may not be displayed.

On the other hand, as the state level is determined to be LV2 in (b) of FIG. 16, the predicted time until an accident occurs (6 months) and the accident probability (30%) can be displayed in the L4 layer.

In this way, the partial discharge diagnosis module 12 first determines the occurrence density and state level of partial discharge, and when the lowest state level is derived, the predicted time until an accident occurs and the risk of the accident probability are determined. The computational load can be reduced by not performing the calculation step.

2. Switchboard with automatic hot gas discharge and automatic restoration functions (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board)

Hereinafter, the switchboard (high-voltage switchboard, low-voltage switchboard, motor control panel, distribution board) having automatic hot gas discharge and automatic restoration functions of the present invention will be described.

Figures 17 and 18 show a switchboard with automatic hot gas discharge and automatic restoration functions in a closed state and an open state according to an embodiment of the present invention.

As shown in Figures 17 and 18, the switchboard having automatic hot gas discharge and automatic restoration functions includes an enclosure 1000 including one or more hot gas outlets open to a predetermined area on the upper surface; A first part 2000a is perpendicular to the upper surface of the enclosure 1000 and has a plurality of louver holes 2000a1, extending parallel to the upper surface of the enclosure from one end of the first part 2000a. , a second part (2000b) interconnected with the upper surface of the enclosure 1000, and a third part (2000c) extending parallel to the upper surface of the enclosure 1000 from the other end of the first part (2000a). and a U-shaped frame (2000) in which the first part (2000a), the second part (2000b), and the third part (2000c) form an overall U-shape and form a peripheral wall along the outer peripheral surface of the hot gas outlet; An opening/closing cover (3000) that has an area larger than that of the hot gas outlet, opens and closes the open surface of the hot gas outlet, and has an end bent by a predetermined length in the direction of the upper surface of the enclosure (1000); And a plurality of cover poles (a rod whose lower end is coupled to the upper surface of the enclosure 1000 and extends in the vertical direction of the enclosure 1000, and which penetrates each of a plurality of oval holes formed in the opening and closing cover 3000) 4000); and when the pressure inside the switchgear rises, the opening and closing cover 3000 rises and opens to discharge hot gas inside the switchgear, and when the internal pressure decreases, the opening and closing cover 3000 opens. It is lowered and restored automatically, and the opening and closing cover 3000, which is rising or falling, can be prevented from being separated by the plurality of cover poles 4000 that penetrate each of the plurality of oval holes formed in the opening and closing cover 3000. .

In addition, the cover pole 4000 includes a buffer member 4100 coupled to the upper side of the opening/closing cover 3000 through the cover pole 4000; A spring fixing nut (4200) fixedly coupled to the upper end of the cover pole (4000); And a compression spring 4300 that inserts the cover pole 4000 between the spring fixing nut 4200 and the buffering member 4100, and when the opening and closing cover 3000 rises, the buffering member By the compression spring 4300 compressed with (4100), the impact force applied to the opening and closing cover 3000 is alleviated, and the self-weight of the opening and closing cover 3000 and the relaxation force of the compressed compression spring 4300 As a result, the raised opening and closing cover 3000 can be lowered and automatically restored.

In addition, the plurality of louver holes 2000a1 are formed in the first part 2000a of the U-shaped frame 2000 toward the outside of the switchgear, and are formed on the inside of the switchgear of the first part 2000a of the U-shaped frame 2000. A mesh filter (2000a2) is attached in this direction, and can block water and fire extinguishing substances sprayed in the event of a fire from entering the inside of the switchgear.

Specifically, the enclosure 1000 of the switchboard is a steel structure that accommodates and protects power devices in an internal space, and may include one or more hot gas outlets open to a predetermined area on the upper surface. Preferably, the hot gas outlet may have a rectangular shape.

The hot gas outlet is provided on the upper surface of the switchgear enclosure 1000, where workers are not located, so that in the event of an explosion, hot gas generated inside the switchgear is discharged upward, thereby preventing workers from being injured.

Meanwhile, the U-shaped frame 2000 may be coupled along the perimeter of the hot gas outlet formed in the enclosure 1000 of the switchgear. First, looking at (a) of FIG. 20 showing the U-shaped frame 2000, the U-shaped frame 2000 is a flat member having an overall U-shape including a plurality of bent portions, and the surface corresponding to the second part 2000b They are interconnected in a state parallel to the upper surface of the enclosure 1000, and the surface corresponding to the first part 2000a bent at one end of the second part 2000b is arranged perpendicular to the upper surface of the enclosure 1000. The surface corresponding to the third part 2000c bent at the other end of the first part 2000a may be arranged to be parallel to the upper surface (or the second part 2000b) of the enclosure 1000.

The U-shaped frame 2000 may be coupled to the upper surface of the enclosure 1000 along the perimeter of the hot gas outlet, and an opening and closing cover 3000 is located on the upper side of the U-shaped frame 2000 to allow the hot gas outlet to be opened and closed. You can. Preferably, the opening/closing cover 3000 has a larger area than the open surface of the hot gas outlet, so that it can completely cover the hot gas outlet.

In this way, the opening/closing cover 3000 does not directly contact the upper surface of the enclosure 1000 where the hot gas outlet is formed, but connects the hot gas outlet to the upper side of the U-shaped frame 2000 that forms a peripheral wall along the hot gas outlet. It can be opened and closed.

Preferably, when the internal pressure rises due to hot gas generated inside the switchgear, the opening and closing cover 3000 is opened and the hot gas can be discharged to the outside, and when the hot gas is discharged and the internal pressure decreases, the opening and closing cover 3000 is opened. The cover 3000 may be lowered and restored to its initial position.

Meanwhile, a plurality of louver holes 2000a1 may be formed in the first part 2000a of the U-shaped frame 2000. Specifically, the louver hole 2000a1 is formed from the inside to the outside of the first part 2000a, and can form another flow path through which hot gas generated inside the switchgear is discharged to the outside. More specifically, the louver hole 2000a1 can be formed by opening a portion of the first part 2000a of the U-shaped frame 2000 and forming a roof structure so that the fluid discharged from the open surface is directed downward. .

This louver hole (2000a1) is always open without a separate opening and closing member, so that heat generated inside the switchgear can be discharged in normal times, and when relatively low pressure hot gas is generated at the beginning of an accident, the opening and closing of the The cover 3000 may not be opened and hot gas may be discharged through the louver hole 2000a1.

Meanwhile, in one embodiment of the present invention, the louver perforation 2000a1 may be preferably formed so that the lowest end of the roof structure is located lower than the lowest end of the open surface of the first part 2000a of the U-shaped frame 2000. there is. By having this structure, although the louver hole (2000a1) is always open without a separate opening and closing member, when a fire occurs, the fire extinguishing water and fire extinguishing material sprayed at a predetermined angle from the upper side of the switchgear enter the inside of the switchgear through the louver hole (2000a1). It can prevent intrusion.

Preferably, when a fire occurs, the fire extinguishing water and fire extinguishing materials sprayed at a predetermined angle from the upper side of the switchgear are primarily blocked by the opening/closing cover 3000, which completely covers the hot gas outlet and has one end bent by a predetermined length. , Secondly, it is blocked by the roof structure of the louver perforation (2000a1), so that it is always open and can block fire-fighting water and fire extinguishing materials from flowing into the louver perforation (2000a1).

As a result, the switchgear according to an embodiment of the present invention can satisfy IP42 grade (waterproof and dustproof grade).

In one embodiment of the present invention, a plurality of louver perforations 2000a1 may be formed in the first portion 2000a of the U-shaped frame 2000 in one or more rows. Preferably, the number of louver holes (2000a1) can be designed variably by comprehensively considering the heat circulation and gas emissions inside the switchgear.

Meanwhile, as shown in FIGS. 17 and 18, a mesh filter 2000a2 may be attached to the inside of the first part 2000a of the U-shaped frame 2000.

As described above, a portion of the first part 2000a of the U-shaped frame 2000 may be opened by the louver perforation 2000a1, and the mesh filter 2000a2 may be attached to the inside of the first part 2000a to form the louver perforation. (2000a1), incoming external particles can be filtered.

Preferably, the mesh filter (2000a2) filters external particles of 1 mm or more (for example, extinguishing substances sprayed in the event of a fire) to block external particles from entering the switchgear and prevent damage to power devices inside the switchgear by external particles. You can prevent it from happening.

In one embodiment of the present invention, the mesh filter 2000a2 may be a plate-type filter having an area corresponding to the first part 2000a of the U-shaped frame 2000.

Meanwhile, the second part 2000b of the U-shaped frame 2000 and the enclosure 1000, which are arranged in parallel, may each have through-holes formed for bolting them to each other. Specifically, the U-shaped coupling bolt 8100 penetrates the through hole 2000b1 formed in the second part 2000b of the U-shaped frame 2000 and the through hole formed in the enclosure 1000, and the first C-shaped fixing nut 8000a and the 2 By fastening with the U-shaped fixing nut 8000b, the U-shaped frame 2000 can be coupled to the enclosure 1000.

Meanwhile, a waterproof packing 5000 may be fitted to one end of the third part 2000c of the U-shaped frame 2000. Specifically, looking at (b) of Figure 20 showing the waterproof packing 5000, the lower part (5000b) of the waterproof packing (5000) has a shape extending into a C shape, and the upper part (5000a) has a shape extending into an O shape. You can. Additionally, in one embodiment of the present invention, the waterproof packing 5000 may be made of a material (rubber) having elasticity.

That is, the waterproof packing 5000 has a C-shaped lower part 5000b so that it can be fitted to one end of the third part 2000c of the U-shaped frame 2000, and the O-shaped upper part 5000a is By having elasticity, the space between the U-shaped frame (2000) and the opening/closing cover (3000) can be completely sealed.

Specifically, the hot gas outlet can be closed by contacting the upper surface of the third part 2000c of the U-shaped frame 2000 and the lower surface of the opening and closing cover 3000. At this time, the entire upper surface of the third part (2000c) of the U-shaped frame 2000 is not in contact with the lower surface of the opening and closing cover 3000, and the waterproofing is fitted to one end of the third part (2000c) of the U-shaped frame 2000. Packing 5000 may contact the lower surface of the opening/closing cover 3000.

More specifically, the upper part (5000a) of the elastic O-shaped waterproof packing (5000) is compressed by the self-weight of the opening and closing cover (3000) and the compression spring (4300), and the third part of the U-shaped frame (2000) ( The space between the opening and closing cover (2000c) and the opening/closing cover (3000) can be completely sealed.

In this way, the space between the third part 2000c of the U-shaped frame 2000 and the opening/closing cover 3000 is completely sealed by the waterproof packing 5000, thereby preventing fire extinguishing (with the opening/closing cover 3000 closed). (When water is sprayed), water flowing along the opening/closing cover 3000 can be prevented from flowing into the inside of the switchgear.

Meanwhile, referring again to FIGS. 17 and 18, the switchgear of the present invention may include a plurality of cover poles 4000. Specifically, the cover pole 4000 is a rod extending in the vertical direction, the lower end of which is coupled to the upper surface of the enclosure 1000, and can penetrate the oval hole formed in the opening and closing cover 3000.

As described above, when the internal pressure of the switchgear increases and the pressure pushing the open/close cover 3000 inside the switchboard becomes greater than the self-weight of the open/close cover 3000, the open/close cover 3000 rises, and the hot gas outlet can be opened.

Meanwhile, a spring fixing nut 4200 larger than the area of the oval hole is fixedly coupled to the upper end of the cover pole 4000 that penetrates the oval hole formed in the opening and closing cover 3000, so that the opening and closing cover 3000 is connected to the cover pole ( 4000) can be prevented from completely deviating. That is, it is possible to prevent the worker from being injured by the opening/closing cover 3000 falling by the cover pole 4000.

Additionally, a compression spring 4300 and a buffer member 4100 may be located sequentially below the spring fixing nut 4200 fixed to the upper end of the cover pole 4000.

Specifically, the buffer member 4100 is a cylindrical elastic material (preferably urethane) with a hollow in the center corresponding to the cross section of the cover pole 4000, and the cover pole 4000 is positioned in the hollow of the buffer member 4100. By inserting the , it is possible to absorb the impact force caused by the opening/closing cover 3000 rising when an explosion occurs, thereby preventing the opening/closing cover 3000 from being damaged.

Preferably, the buffer member 4100 may be fitted into the cover pole 4000 at the upper side of the opening/closing cover 3000.

In addition, the buffer member 4100 is located below the compression spring 4300, and can prevent the compression spring 4300 from being inserted into the through hole of the opening and closing cover 3000 when the opening and closing cover 3000 is raised.

Likewise, the compression spring 4300 is located between the spring fixing nut 4200 and the buffer member 4100, and is compressed by the rising opening and closing cover 3000 to relieve the impact force applied to the opening and closing cover 3000. there is. Specifically, the compression spring 4300 is in a partially compressed state and is disposed between the spring fixing nut 4200 and the buffer member 4100, and is compressed when the opening and closing cover 3000 rises to exert pressure on the opening and closing cover 3000. The impact force is alleviated and the internal pressure of the switchgear is reduced so that the opening/closing cover 3000 can be relaxed when it is lowered.

In this way, the cover pole 4000 is sequentially provided with a buffer member 4100, a compression spring 4300, and a spring fixing nut 4200, and is applied to the opening and closing cover 3000 rising along the cover pole 4000. The impact force is alleviated by the buffer member 4100 and the compression spring 4300, and the spring fixing nut 4200 is fixedly coupled to the upper end of the cover pole 4000 to form the opening and closing cover 3000, the buffer member 4100, And it is possible to prevent the compression spring 4300 from completely leaving the cover pole 4000.

Meanwhile, the lower end of the cover pole 4000 may be fixedly coupled to the upper surface of the enclosure 1000. Specifically, the upper surface of the enclosure 1000 includes a through hole through which the cover pole 4000 can penetrate, and with the lower end of the cover pole 4000 penetrating the through hole, the first pole fixing nut is The lower end of the cover pole 4000 can be fixedly coupled to the upper surface of the enclosure 1000 by (7000a) and the second pole fixing nut (7000b). Preferably, a waterproof cork (6000) is provided between the first pole fixing nut (7000a) and the upper surface of the enclosure (1000) to form a joint between the lower end of the cover pole (4000) and the upper surface of the enclosure (1000). It can be completely sealed and waterproof.

In one embodiment of the present invention, a waterproof washer (7000c) may be further disposed between the lower end of the cover pole (4000), the waterproof cork (6000), and the first pole fixing nut (7000a). Specifically, the waterproof washer (7000c) prevents the waterproof cork (6000) from being damaged by the first pole fixing nut (7000a) by tightening the first pole fixing nut (7000a) strongly, and also prevents the first pole fixing nut (7000a) from being damaged. It is possible to prevent water from flowing into the gap between the and waterproof cork (6000).

Additionally, in one embodiment of the present invention, a waterproof washer (7000c) may be further provided between the second pole fixing nut (7000b) and the lower side of the upper surface of the enclosure (1000).

Meanwhile, as described above, the opening/closing cover 3000 may have a larger area than the hot gas outlet open on the upper surface of the switchgear enclosure 1000, and may have a structure in which an end is bent by a predetermined length. Additionally, the opening/closing cover 3000 may have a plurality of oval holes through which the cover pole 4000 can pass.

Meanwhile, a V-shaped hot gas discharge guide 3100 may be included on the lower side of the opening and closing cover 3000. Specifically, the hot gas discharge guide 3100 is a flat member bent in a V shape, and can be coupled to the opening and closing cover 3000 so that the bent portion is located at the lower center of the opening and closing cover 3000.

The hot gas discharge guide 3100 having this structure can serve to diverge the hot gas concentrated in the center of the opening/closing cover 3000 in the left, right, front and back directions.

Meanwhile, the hot gas discharge guide 3100 can be configured in a detachable form by being screwed together with the opening and closing cover 3000. Specifically, as shown in Figures 1 and 2, through holes are formed at both ends of the hot gas discharge guide 3100 and the opening and closing cover 3000, and the guide coupling bolt 9100 penetrates the through hole. By being fastened by the first guide fixing nut (9000a) and the second guide fixing nut (9000b), the hot gas discharge guide (3100) can be screwed to the lower surface of the opening and closing cover (3000).

Additionally, as described above, the size of the hot gas discharge guide 3100 may be determined so that the bent portion of the hot gas discharge guide 3100 is located at the center of the lower surface of the opening and closing cover 3000.

In this way, the hot gas discharge guide 3100, which is fastened to the lower side of the opening and closing cover 3000, can be easily attached and detached by the operator, and the hot gas discharge guide 3100 or the opening and closing is used in the process of discharging high-temperature and high-pressure hot gas. If the cover (3000) is damaged or deformed, the hot gas discharge guide (3100), the opening/closing cover (3000), or the parts combined with them (U-shaped frame (2000), etc.) are not replaced as a whole. Only damaged parts can be replaced.

Meanwhile, an opening and closing handle 3200 may be formed on the upper side of the opening and closing cover 3000. Specifically, the opening/closing handle (3200) is provided for portability and ease of installation of the opening/closing cover (3000). Through the opening/closing handle (3200), the worker can replace the opening/closing cover (3000) or the hot gas discharge guide (3100). It can be performed more smoothly.

In one embodiment of the present invention, the opening and closing handle 3200 may have an integrated structure welded to the opening and closing cover 3000.

Alternatively, in another embodiment of the present invention, the opening and closing handle 3200 may have a structure that is detachable from the opening and closing cover 3000 by screwing, etc.

To summarize, in a state in which the switchgear of FIG. 17 is closed, the opening/closing cover 3000 compresses the waterproof packing 5000 fitted to the U-shaped frame 2000 with its own weight, thereby forming a gap between the U-shaped frame 2000 and the opening/closing cover 3000. A flow path may not be formed.

Also, at this time, the compression spring 4300 may be in a partially compressed state.

When the switchboard of FIG. 18 is open, the switchboard 3000 rises due to the internal pressure of the switchboard, and a flow path may be formed between the U-shaped frame 2000 and the switchboard 3000.

Also, at this time, the compression spring 4300 is compressed by the rising opening and closing cover 3000, thereby relieving the impact force applied to the opening and closing cover 3000.

In addition, the compression spring 4300, the buffer member 4100, and the opening/closing cover 3000 are completely separated from the cover pole 4000 by the spring fixing nut 4200 fixed to the upper end of the cover pole 4000. can be prevented.

Again, when the internal pressure of the switchgear decreases, the opening/closing cover 3000 can be lowered by its own weight and the compression spring 4300 and automatically restored to the initial state of FIG. 17.

Also at this time, the compressed compression spring 4300 may be relaxed.

In this way, the switchgear of the present invention automatically discharges hot gas when the internal pressure rises, and can be automatically restored to the initial state without operator intervention when the internal pressure falls.

Figure 19 shows the flow path of hot gas discharged from the switchboard according to an embodiment of the present invention.

As shown in FIG. 19, the opening and closing cover 3000 is formed in a V shape at the center of the lower side of the opening and closing cover 3000, and controls the flow path of hot gas concentrated in the center of the opening and closing cover 3000. A hot gas discharge guide (3100) that diverges into; And an opening and closing handle 3200 formed on the upper side of the cover, wherein the hot gas discharge guide 3100 is screwed to the opening and closing cover 3000 and is deformed by high-pressure hot gas. The hot gas discharge guide (3100) can be replaced.

Figure 19 (a) shows the flow path when hot gas generated inside the switchgear is discharged to the outside when the special structure of the present invention is not applied. Here, the special structure may correspond to the hot gas discharge guide 3100 coupled to the lower side of the opening/closing cover 3000 and the louver hole 2000a1 formed in the U-shaped frame 2000.

As shown, the opening/closing cover 3000 can close the hot gas outlet. Specifically, the opening and closing cover 3000 is connected to the third part 2000c (preferably the third part 2000c) of the U-shaped frame 2000 whose lower surface forms a peripheral wall along the hot gas discharge guide 3100. The inside of the switchgear can be sealed by contacting the waterproof packing (5000).

At this time, when high-temperature and high-pressure hot gas is generated inside the switchboard and the internal pressure of the switchboard increases, the opening/closing cover 3000 may be opened. Specifically, when the internal pressure of the switchgear becomes greater than the pressure caused by the self-weight of the opening/closing cover 3000, the opening/closing cover 3000 rises and opens, allowing hot gas to be discharged.

Meanwhile, as shown, in this case, the hot gas discharged may be concentrated in the center of the opening/closing cover 3000. That is, when a large amount of hot gas is emitted momentarily, such as in an explosion, pressure is concentrated in the center of the flat cover 3000, which may damage or deform the cover 3000.

Meanwhile, Figure 19 (b) shows the switchgear of the present invention in which a hot gas discharge guide 3100 and a louver hole 2000a1 are formed. As described above, the hot gas discharge guide 3100 may serve to branch the flow path of hot gas concentrated in the center of the opening/closing cover 3000 to the left and right. Specifically, hot gas concentrated in the center of the opening/closing cover 3000 may collide with the V-shaped hot gas discharge guide 3100 and diverge in the left and right directions.

Meanwhile, as shown, when hot gas is discharged, the part that receives the highest pressure in the hot gas discharge guide (3100) may correspond to the V-shaped bent part, and the part is separated from the opening and closing cover (3000) by a predetermined distance. may be separated. That is, in the event of an explosion, the V-shaped bent portion of the hot gas discharge guide (3100) spaced apart from the opening/closing cover (3000) receives the highest pressure, thereby preventing the opening/closing cover (3000) from being damaged or deformed. there is.

In this way, the hot gas discharge guide 3100 can relieve the impact force applied to the opening and closing cover 3000 by diverging the flow path where hot gas collides and is concentrated in the center of the opening and closing cover 3000 in the left and right directions.

In addition, as described above, the hot gas discharge guide (3100) has a structure that is easily attached and detached by screwing with the opening and closing cover (3000), so that when the hot gas discharge guide (3100) is damaged or deformed, the opening and closing cover (3000) ) You can replace only the hot gas discharge guide (3100) without having to replace the entire thing.

In this way, when the opening and closing cover (3000) is raised and opened, the main flow path formed from the inside of the switchgear to the outside branches to the left and right based on the hot gas discharge guide (3100), and the opening and closing cover (3000) and the U-shaped frame ( It may correspond to the space between the third part (2000c) of 2000).

Meanwhile, a plurality of louver holes 2000a1 formed in the first part 2000a of the U-shaped frame 2000 may form an auxiliary flow path through which hot gas is discharged. Specifically, as described above, since the louver hole 2000a1 is always open, some of the hot gas discharged from inside the switchgear may be discharged to the outside through the louver hole 2000a1.

That is, some of the discharged hot gas is discharged through the louver hole 2000a1, so that the impact force applied to the opening/closing cover 3000 and the hot gas discharge guide 3100 can be alleviated. In addition, heat inside the switchgear can be circulated through the louver hole 2000a1, which is always open.

To summarize, if the internal pressure of the switchgear is below the critical pressure at which the opening/closing cover 3000 opens (rises), hot gas can be discharged through the always open louver hole 2000a1, and the internal pressure is at the critical pressure. When the opening/closing cover 3000 is opened beyond The impact force applied to the opening/closing cover 3000 can be alleviated.

Figure 21 shows a waterproof cork 6000 according to an embodiment of the present invention.

As shown in FIG. 21, the lower part (5000b) of the switchgear extends in a C shape and is fitted into one end of the third part (2000c) of the U-shaped frame (2000), and the upper part (5000a) extends in an O shape. It is located between the third part (2000c) of the U-shaped frame (2000) and the lower surface of the opening and closing cover (3000), and is made of an elastic material and has an O-shaped upper part (5000a) of the opening and closing cover (3000). A waterproof packing (5000) that is compressed by its own weight and seals the space between the third part (2000c) of the U-shaped frame (2000) and the opening and closing cover (3000); And it has a predetermined area, and the cover pole 4000 penetrates a part, and a bolt connecting the second part 2000b of the U-shaped frame 2000 and the upper surface of the enclosure 1000 penetrates the other part. , between the upper surface of the enclosure 1000 and the nut coupling the upper surface of the enclosure 1000 and the lower end of the cover pole 4000 and the second part 2000b of the U-shaped frame 2000 and the enclosure 1000. ) is located between the upper surface of the enclosure (1000) and the coupling portion between the upper surface of the enclosure (1000) and the cover pole (4000), and the spaced space between the coupling surface of the opening/closing cover (3000) and the U-shaped frame (2000). It may further include a sealing, waterproof cork (6000).

As shown in (a) of FIG. 21, the waterproof cork 6000 is a waterproof material with excellent absorbency, and includes a joint between the upper surface of the enclosure 1000 and the cover pole 4000, and the opening and closing cover 3000. ) and the U-shaped frame (2000) can be sealed to prevent water (fire-fighting water) from flowing into the inside of the switchgear.

Specifically, as described above, the cover pole 4000 is coupled by the first pole fixing nut 7000a and the second pole fixing nut 7000b while penetrating the through hole formed on the upper surface of the enclosure 1000. You can.

Meanwhile, the waterproof cork 6000 may be located between the first pole fixing nut 7000a and the enclosure 1000. Specifically, the waterproof cork 6000 includes a through hole with the same diameter as the through hole, and the cover pole 4000 penetrates the waterproof cork 6000 and the through hole formed on the upper surface of the enclosure 1000. , can be interconnected by the first pole fixing nut (7000a) and the second pole fixing nut (7000b).

In this way, the waterproof cork (6000) can prevent fire extinguishing water, etc. from flowing into the switchgear between the upper surface of the enclosure (1000) and the cover pole (4000).

In addition, as described above, the second part 2000b of the U-shaped frame 2000 and the enclosure 1000 have the U-shaped coupling bolt 8100 penetrated through the through hole formed in each, and the first U-shaped fixing nut 8000a And the U-shaped frame 2000 and the enclosure 1000 can be interconnected by the second U-shaped fixing nut (8000b).

Meanwhile, the waterproof cork 6000 may be located between the second part 2000b of the U-shaped frame 2000 and the enclosure 1000.

Specifically, a through hole with the same diameter as the through hole is formed in the waterproof cork 6000, and the U-shaped coupling bolt 8100 is connected to the second part 2000b of the U-shaped frame 2000, the waterproof cork 6000, and the enclosure ( 1000), they can be coupled to each other by the first U-shaped fixing nut 8000a and the second C-shaped fixing nut 8000b.

In this way, the waterproof cork 6000 can prevent fire extinguishing water, etc. sprayed when a fire occurs, from flowing into the switchgear through the joining surface between the upper surface of the enclosure 1000 and the U-shaped frame 2000.

In one embodiment of the present invention, the U-shaped coupling bolt 8100 may be a general-type bolt or a computerized bolt.

Meanwhile, as shown in (b) of FIG. 21, the waterproof cork 6000 is a flat member of waterproof material that has a larger area than the opening and closing cover 3000 and includes a square through-hole with a predetermined area in the center. You can. Specifically, the square through hole of the waterproof cork (6000) may correspond to the shape and area of the hot gas outlet. Preferably, the waterproof cork (6000) has an area other than the square through hole that covers the joint between the upper surface of the enclosure (1000) and the cover pole (4000), the opening/closing cover (3000), and the U-shaped frame (2000). It can be formed to encompass all of the joining surfaces.

The waterproof cork 6000 of this type is shown in (c) of FIG. 21 and can be placed on the upper surface of the enclosure 1000 along the circumference of the hot gas outlet.

Figure 22 shows an opening and closing cover 3000 in which a vertical oval hole 3300b and a horizontal oval hole 3300a are perforated according to an embodiment of the present invention.

As shown in FIG. 22, the oval hole includes a horizontal oval hole (3300a) extending in the horizontal direction and perforated with an area larger than the cross section of the cover pole (4000), and a horizontal oval hole (3300a) extending in the vertical direction and perforating the cover pole (4000). It includes a vertical oval hole (3300b) perforated with an area larger than the cross section of, and the horizontal oval hole (3300a) and the vertical oval hole (3300b) are alternately formed on the upper surface of the opening and closing cover (3000), The opening and closing cover 3000, which rises inclinedly, can rise smoothly due to the free space between each of the horizontal oval hole 3300a and the vertical oval hole 3300b and the cover pole 4000, and the opening and closing cover ( By deforming the opening/closing cover 3000, it is possible to prevent the opening/closing cover 3000 from being inserted into the cover pole 4000 or damage to the cover pole 4000.

As described above, a plurality of oval holes may be formed in the opening and closing cover 3000, and a cover pole 4000 penetrates each of the plurality of oval holes, and the opening and closing cover 3000 rises and falls according to the internal pressure of the switchgear. ) can be prevented from leaving.

Meanwhile, usually when an accident occurs, the opening/closing cover 3000 does not rise in a direction perpendicular to the ground, but rises at a predetermined inclination. That is, when an accident occurs, due to pressure imbalance inside the switchgear, one side receives more pressure than the other side and the opening/closing cover 3000 may rise in an inclined state.

In one embodiment of the present invention, the area of the oval hole of the opening and closing cover 3000 is larger than the cross section of the cover pole 4000, so that a free space is formed between the opening and closing cover 3000 and the cover pole 4000, and the area is inclined accordingly. The rising opening/closing cover 3000 can rise more smoothly.

Meanwhile, in one embodiment of the present invention, the plurality of oval holes formed in the opening and closing cover 3000 may be horizontal oval holes 3300a or vertical oval holes 3300b. Preferably, a horizontal oval hole (3300a) and a vertical oval hole (3300b) may be formed sequentially in the opening/closing cover (3000).

Specifically, the horizontal oval hole 3300a shown on the left side of (a) of FIG. 22 may be an oval-shaped through hole whose horizontal axis is longer than the vertical axis. As described above, the area of the horizontal oval hole 3300a may be larger than the cross section of the cover pole 4000.

That is, the length of the horizontal and vertical axes of the horizontal oval hole (3300a) is longer than the diameter of the cover pole (4000), but the length of the horizontal axis is longer than the length of the vertical axis, so that the cover pole (4000) penetrating the horizontal oval hole (3300a) Movement in the horizontal direction may be smoother than in the vertical direction.

Meanwhile, the vertical oval hole 3300b shown on the right side of (a) of FIG. 22 may be an oval-shaped through hole whose vertical axis is longer than the horizontal axis. Likewise, the area of the vertical oval hole 3300b may be larger than the cross section of the cover pole 4000.

That is, the length of the horizontal and vertical axes of the vertical oval hole (3300b) is longer than the diameter of the cover pole (4000), but the length of the vertical axis is longer than the length of the horizontal axis, so that the cover pole (4000) penetrates the vertical oval hole (3300b). ) may move more smoothly in the vertical direction than in the horizontal direction.

Meanwhile, as shown in (b) of FIG. 22, horizontal oval holes 3300a and vertical oval holes 3300b may be formed alternately in the opening and closing cover 3000.

Specifically, a plurality of oval holes may be formed in one or more rows in the opening/closing cover 3000, and a plurality of horizontal oval holes 3300a and vertical oval holes 3300b may be formed alternately in one row.

Taking (b) of FIG. 22 as an example, a plurality of oval holes may be formed in four rows in the opening and closing cover 3000, and a plurality of horizontal oval holes through which a plurality of cover poles 4000 pass through each of the first and fourth rows. (3300a) and vertical oval holes (3300b) may be formed alternately.

In this way, the cover poles 4000 penetrate each of the plurality of horizontal oval holes 3300a and vertical oval holes 3300b formed in the opening and closing cover 3000, thereby preventing the opening and closing cover 3000 from coming off. By alternately forming horizontal oval holes (3300a), which allow smooth movement in the horizontal direction, and vertical oval holes (3300b), which allow smooth movement in the vertical direction, the opening and closing cover (3000), which is subjected to oblique pressure, can rise and open more smoothly. , the cover poles 4000 can be prevented from being deformed by the opening and closing cover 3000.

(Meanwhile, the through holes formed in the second and third rows may be through holes for fastening the hot gas discharge guide 31 to the lower side of the opening and closing cover 3000.)

As described above, although the embodiments have been described with limited examples and drawings, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent. Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the claims described below.

Claims (7)

A switchgear with automatic hot gas discharge and automatic restoration functions,
An enclosure including one or more hot gas outlets open to a predetermined area on the upper surface;
A first part that is perpendicular to the upper surface of the enclosure and has a plurality of louver holes, and a second part that extends parallel to the upper surface of the enclosure from one end of the first part and is mutually coupled to the upper surface of the enclosure. , including a third part extending parallel to the upper surface of the enclosure from the other end of the first part, wherein the first part, the second part, and the third part form an overall U-shape, and the outer peripheral surface of the hot gas outlet is A U-shaped frame forming a perimeter wall along the;
an opening/closing cover that has an area larger than the area of the hot gas outlet, opens and closes the open surface of the hot gas outlet, and has an end bent by a predetermined length in the direction of the upper surface of the enclosure; and
A lower end is a rod coupled to the upper surface of the enclosure and extending in a vertical direction of the enclosure, and a plurality of cover poles penetrating each of a plurality of oval holes formed in the opening and closing cover,
When the pressure inside the switchgear rises, the switchgear cover rises and opens to discharge hot gas inside the switchboard, and when the internal pressure decreases, the switchgear cover lowers and automatically restores,
A plurality of cover poles penetrating each of a plurality of oval holes formed in the opening and closing cover prevent the opening and closing cover from being separated when rising or falling,
The oval hole is,
It includes a horizontal oval hole extending in the horizontal direction and perforated with an area larger than the cross-section of the cover pole, and a vertical oval hole extending in the vertical direction and perforated with an area larger than the cross-section of the cover pole,
The horizontal oval hole and the vertical oval hole are formed alternately on the upper surface of the opening and closing cover,
The cover pole passing through the horizontal oval hole, the length of the horizontal axis of which is longer than the length of the vertical axis, moves more smoothly in the horizontal direction than the length of the vertical axis, and the cover pole penetrating the vertical oval hole whose length of the vertical axis is longer than the length of the horizontal axis. has smoother movement in the vertical direction than in the horizontal direction,
The opening and closing cover, which rises inclinedly, can rise smoothly due to the clearance between each of the horizontal oval hole and the vertical oval hole and the cover pole,
Prevents the opening and closing cover from being inserted into the cover pole or damage being inflicted on the cover pole due to deformation of the opening and closing cover,
The plurality of louver holes,
It is formed in the outer direction of the switchboard in the first part of the U-shaped frame where the opening and closing cover is located on the upper side,
A mesh filter is attached to the inner side of the switchboard of the first part of the U-shaped frame,
A plurality of louver holes that are always open form a flow path through which hot gas and heat inside the switchgear are discharged to the outside.
In the event of a fire, the water and fire extinguishing substances sprayed from the top of the switchgear are:
The structure of the opening/closing cover, which is disposed on the upper side of the U-shaped frame and has an area larger than the area of the hot gas outlet and has one end bent by a predetermined length, and the roof structure of the louver hole formed in the first part of the U-shaped frame into the inside of the switchgear. A switchboard where incoming electricity is blocked.
In claim 1,
The cover pole,
A buffer member coupled to the upper side of the opening/closing cover through the cover pole;
A spring fixing nut fixed to the upper end of the cover pole; and
It includes a compression spring that inserts the cover pole between the spring fixing nut and the buffer member,
When the opening and closing cover rises, the impact force applied to the opening and closing cover is alleviated by the compression spring that is compressed with the buffer member,
A switchgear in which the raised opening and closing cover is lowered and automatically restored by the self-weight of the opening and closing cover and the relaxation force of the compressed compression spring.
In claim 1,
The opening and closing cover is,
A hot gas discharge guide formed in a V shape at the center of the lower side of the opening and closing cover to diverge the flow path of hot gas concentrated in the center of the opening and closing cover to the left and right; and
It further includes an opening and closing handle formed on the upper side of the opening and closing cover,
The hot gas discharge guide is,
A switchboard that is screwed together with the opening/closing cover and can replace the hot gas discharge guide deformed by high-pressure hot gas.
In claim 1,
The switchboard is,
The lower part extends in a C shape and is fitted to one end of the third part of the U-shaped frame, and the upper part extends in an O shape and is located between the third part of the U-shaped frame and the lower surface of the opening and closing cover, and is made of an elastic material. A waterproof packing that seals the gap between the third part of the U-shaped frame and the opening and closing cover while the O-shaped upper part is compressed by the self-weight of the opening and closing cover; and
It has a predetermined area, and the cover pole passes through part of it, and the bolt connecting the second part of the U-shaped frame and the upper surface of the enclosure penetrates the other part, and the upper surface of the enclosure, the upper surface of the enclosure, and the cover penetrate. Located between the nuts connecting the lower end of the pole and between the second part of the U-shaped frame and the upper surface of the enclosure,
A switchgear further comprising a coupling portion between the upper surface of the enclosure and the cover pole, and a waterproof cork sealing the spaced space between the coupling surface of the opening/closing cover and the U-shaped frame.
delete delete In claim 1,
The switchboard is,
Based on whether the R-phase power line, S-phase power line, and T-phase power are energized, whether the switchboard door is open or closed, and whether a human body approaches the inside of the switchgear, step-by-step alarm information is generated when a worker approaches the switchboard while it is energized. A main controller that further includes a switchgear.

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