KR102516675B1 - Active damping control method of switchboard and switchboard controlled by it - Google Patents

Abstract

The present invention relates to an active damping control method of a switchboard for actively controlling an operation of a damper installed in the switchboard for distributing electricity, and to a switchboard controlled thereby. According to an embodiment of the present invention, an active damping control method of a switchboard which includes: an enclosure; a plurality of dampers installed between the enclosure and a floor where the enclosure is installed to buffer an impact applied to the enclosure; damping control valves installed in each damper to control a fluid flowing into and out of the dampers so as to control a buffering force of the dampers; load cells installed between the enclosure and each damper to measure a pressure applied to the enclosure; and a damping controller configured to control the damping control valves according to the pressure measured by the load cells to control the buffer of the enclosure, wherein the control of the damping controller comprises: a step of converting the pressure measured by each load cell into a digital pressure signal; a step of synchronizing the digital pressure signal converted by each load cell with a synchronization signal; and a step of simultaneously controlling each damping control valve according to the digital pressure signal synchronized with the synchronization signal. Therefore, the vibration can be effectively buffered.

Description

Active damping control method of switchboard and switchboard controlled by it {Active damping control method of switchboard and switchboard controlled by it}

The present invention relates to an active damping control method of a switchboard for actively controlling the operation of a damper installed in a switchboard for distributing electricity, and a switchboard controlled thereby.

In general, a switchboard is for distributing transmitted electricity to a place of use, and is configured by installing a distribution facility inside a case.

Such a switchboard is vulnerable to an earthquake or external force, and when an impact occurs, the enclosure is damaged or overturned.

In order to solve this problem, in the prior art, Korean Patent Registration No. 10-1915702 (2019.1.7.) "Seam isolation switchboard with damping function" and Korean Patent Registration No. 10-2431586 (2022.8.11.) "Load cell A seismic isolation switchboard having an easily replaceable vibration damping device" has been disclosed.

In the above-described conventional seismic isolation switchboard, a vibration damping device capable of damping vibration by a damper is installed between the floor and the enclosure, and when vibration caused by an earthquake or external force occurs, the vibration damping device buffers the vibration, so that the switchboard is overturned or damaged could have prevented it from happening.

However, conventional seismic isolation switchboards only control the damping force by controlling the fluid flowing in and out of the vibration damping device when vibrations caused by earthquakes or external forces occur, but they do not effectively respond to vibrations caused by earthquakes or external forces. And, as the vibration damping device is controlled by a different time difference, there is a problem that the enclosure is overturned.

In addition, in the conventional seismic isolation switchboard, when an abnormality occurs in the switchboard, it is difficult to recognize and take action is delayed.

The present invention has been made to solve the above problems, and the problem to be solved by the present invention is to synchronize the pressure signal by the synchronization signal when an earthquake or vibration occurs, thereby controlling all dampers simultaneously, thereby improving the buffering property. An object of the present invention is to provide an active damping control method of a switchboard capable of preventing the overturning of an enclosure and a switchboard controlled thereby.

In addition, when an earthquake occurs, the damping controller generates a synchronization signal with a vibration period corresponding to the vibration period of the earthquake to effectively respond to the vibration of the earthquake and improve the buffering property. An active damping control method of a switchboard and a switchboard controlled thereby is intended to provide

In addition, a fire suppression device is installed inside the enclosure to quickly extinguish the fire and prevent the switchboard from being burned down, and a door open sensor, power transmission monitoring sensor, and non-contact temperature sensor are installed to detect An object of the present invention is to provide an active damping control method of a switchboard that can quickly take action by notifying the outside of abnormal temperature of a busbar and a switchboard controlled by the method.

An active damping control method of a switchboard according to an embodiment of the present invention for achieving the above object is a plurality of dampers installed between an enclosure and a floor on which the enclosure is installed to buffer the impact applied to the enclosure, and each damper A damping control valve installed in the damper to control the fluid flowing in and out of the damper to control the buffering force of the damper, a load cell installed between the housing and each damper to measure the pressure applied to the housing, and measured by the load cell An active damping control method of a switchboard including a damping controller that controls the damping of the enclosure by controlling the damping control valve according to the pressure, wherein the control of the damping controller converts the pressure measured by each load cell into a digital pressure signal and synchronizing the digital pressure signal converted from each load cell with a synchronization signal, and simultaneously controlling the respective damping control valves according to the digital pressure signal synchronized with the synchronization signal.

A step of removing noise from the digital pressure signal to prevent an erroneous operation of the damping control valve may be included between the converting to the digital pressure signal and the step of synchronizing with the synchronization signal.

The switchboard may further include an earthquake detection sensor for measuring seismic waves of an earthquake, and the damping controller may control the damping control valve in response to the seismic waves measured by the earthquake detection sensor.

The preset synchronization signal has an oscillation period (Hz) corresponding to the oscillation period (Hz) of the seismic wave measured by the earthquake sensor, and the damping controller controls the damping control valve according to the oscillation period of the synchronization signal. can

The damping controller may control the damping control valve in response to the amplitude of the seismic wave measured by the earthquake sensor.

The switchboard further includes a tilt sensor for detecting a tilt of the enclosure,

The damping controller may control the damping control valve when the inclination sensor detects the inclination of the enclosure.

The switchboard includes a sensor unit providing information for determining whether or not the switchboard is abnormal, and includes an earthquake detection sensor for detecting the earthquake, a tilt sensor for detecting the tilt of the enclosure, and power transmission for monitoring the power transmission state of the power distribution facility. A monitoring sensor, a temperature sensor for detecting the temperature of the power distribution facility, and a door open sensor for detecting the opening of the door of the enclosure may be included.

A switchboard controlled by the active damping control method of a switchboard according to an embodiment of the present invention is controlled by the above-described active damping control method of a switchboard.

According to the present invention, the pressure signal measured by the plurality of load cells is synchronized with the synchronization signal, the pressure is measured simultaneously, and at the same time, by controlling each damping control valve, vibration applied to the distribution box can be effectively buffered, as well as damping control The valve can prevent conduction of the enclosure from occurring over time.

In addition, the damping control valve may be controlled in response to the vibration period of the seismic wave by generating a synchronization signal to have an oscillation period corresponding to that of the seismic wave, thereby improving the damping performance of the damper.

In addition, a fire suppression device is installed inside the enclosure to quickly extinguish the fire when a fire occurs, thereby preventing the switchboard from being burned down.

In addition, the door open is detected by the door open detection sensor, uneven power transmission is detected by the power transmission monitoring sensor, and the temperature of the bus bar is detected by the non-contact temperature sensor, and displayed on the display unit according to the occurrence of an abnormality or the communication module is activated. Through this, the management server can be notified and action can be taken quickly.

1 is a perspective view schematically showing a switchboard controlled by an active damping control method of a switchboard according to an embodiment of the present invention.
2 is a schematic side view of a switchboard controlled by an active damping control method of a switchboard according to an embodiment of the present invention.
3 is a schematic configuration diagram of a switchboard controlled by an active damping control method of a switchboard according to an embodiment of the present invention.
4 is a flowchart of an active damping control method of a switchboard according to an embodiment of the present invention.
5 shows a signal synchronized with a synchronization signal of an active damping control method of a switchboard according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

The switchboard 100 controlled by the active damping control method of the switchboard according to an embodiment of the present invention is disclosed in Korea Patent Registration No. 10-1915702 (January 7, 2019) of the present inventor or Korea Patent Registration No. 10 of the present applicant. It may be a seismic isolation switchboard disclosed in No. -2431586 (2022.8.11.).

As shown in FIGS. 1 and 2 , the switchboard 100 controlled by the active damping control method according to the embodiment of the present invention may include an enclosure 110 and a damper 120 .

The enclosure 110 is formed in the form of an empty box, and a power distribution facility may be installed therein.

A door of the enclosure 110 for opening and closing the inner roll of the enclosure 110 may be installed in the enclosure 110.

The damper 120 may buffer the shock applied to the enclosure 110 by supporting the enclosure 110 on the floor.

The damper 120 is installed at each corner of the bottom of the enclosure 110 to support one enclosure 110 by a plurality of dampers 120 .

The damper 120 may be a table support unit in Korean Patent Registration No. 10-1915702 (2019.1.7.), and will be implemented as a vibration damping device in Korean Patent Registration No. 10-2431586 (2022.8.11.) can

The damper 120 may be composed of a cylinder part 121 installed on the floor and a piston part 123 protruding from the inside of the cylinder part 121, and the piston part 123 is inside the cylinder part 121 It may be supported by the buffer spring 125 in a state protruding upward from.

On the other hand, an inlet 127 through which fluid flows in and out of the lower part of the piston part 123 may be formed in the cylinder part 121, and the piston part 121 flows fluid through the inlet and outlet 127 according to the inflow and outflow of the piston. The buffering power of the unit 123 can be controlled.

For example, when the fluid is filled into the cylinder through the outlet 127, even if pressure is applied to the piston 123, the pressure of the fluid can limit the descent of the piston 123, and the outlet When the fluid filled into the cylinder is discharged through 127, when pressure is applied to the piston part 123, the piston part 123 descends while the shock absorber spring 125 compresses and expands to absorb the impact. there is.

The fluid supplied to the cylinder part 121 may be air that has a relatively low viscosity and can quickly move to the outlet 127 and control the buffering power of the damper 120 .

The damper 120 may include a damping control valve 127a.

The damping control valve 127a is installed at the outlet 127 to control the inflow and outflow of fluid to the outlet 127 .

The damping control valve 127a opens or closes the outlet 127 or adjusts the opening degree of the outlet 127 to control the amount of fluid flowing in and out of the outlet 127. The buffering power of the damper 120 can also be adjusted.

The damping control valve 127a may be an electronically controlled solenoid valve, and the damping control valve 127a is a solenoid valve capable of opening and closing the outlet 127 relatively quickly (within about 0.06 seconds) among the electronic valves. It is desirable to implement

Of course, the damping control valve 127a may be implemented as an electronic valve in the form of a butterfly valve that adjusts the opening of the door to adjust the amount of fluid flowing in and out of the outlet 127 in inverse proportion to the changed impact amount.

For example, the electromagnetic valve in the form of a butterfly valve minimizes the opening of the outlet port 127 when a relatively large impact is applied to minimize the outflow of the fluid from the cylinder portion 121. Strongly support the piston portion 123 And, when a relatively small impact is applied, the opening of the outlet 127 is increased to reduce the resistance to the fluid of the piston unit 123, so that the piston unit 123 moves and buffers the outlet 127 according to the opening The inflow and outflow can be controlled.

As shown in FIGS. 2 and 3 , the switchboard 100 controlled by the active damping control method according to the embodiment of the present invention may include a sensor unit 140 .

The sensor unit 140 may measure information for controlling the damper 120 and provide the measured information to the damping controller 150 .

The sensor unit 140 may include at least one of a load cell 148, an earthquake detection sensor 149, and a tilt detection sensor 149.

The load cell 148 may be installed between the damper 120 and the housing 110 to measure the pressure applied to the housing 110.

The load cell 148 is installed on each damper 120 to measure the pressure applied to each part of the enclosure 110 where the damper 120 is located.

The load cell 148 may be implemented as a pressure sensor that measures the pressing force applied to the enclosure 110 .

The load cell 148 may transmit a pressure signal obtained by measuring applied pressure through wired or wireless communication.

The earthquake detection sensor 149 is installed in the enclosure 110 to detect the occurrence of an earthquake, and the earthquake detection sensor 149 can measure seismic waves of an earthquake. Only when vibration occurs, it can be determined that an earthquake has occurred.

When the earthquake detection sensor 149 determines that an earthquake has occurred, it can measure seismic waves of the generated earthquake, transmit the measured seismic wave signal through wireless or wired communication, and seismic waves measured by the earthquake detection sensor 149. can measure either or both of the P wave and the S wave.

The tilt sensor 149 may measure the tilt of the enclosure 110 .

The tilt sensor 149 is implemented as a three-axis sensor to detect the tilt of the housing 110 in the directions of the X, Y, and Z axes, and the tilt sensor 149 measures the measured tilt of the housing 110. Signals can be transmitted through wired or wireless communication.

The sensor unit 140 may further include a door open sensor 141 , a temperature sensor 143 , and a power transmission monitoring sensor 145 .

The door open sensor 141 may detect the opening or closing of the door of the enclosure 110 .

The door open sensor 141 may notify the outside that foreign substances are introduced into the enclosure 110 according to the opening of the door.

The door open detection sensor 141 may be installed in a part where the enclosure 110 is opened and closed by the opening and closing door, and the door open detection sensor 141 electronically detects the opening and closing of the opening and closing door, for example, a magnetic sensor or a body It may be implemented as an electronic sensor such as a detection sensor or a camera, or a switch that mechanically detects the opening and closing of the door.

The door open detection sensor 141 may transmit an open/close signal according to the opening/closing of the door.

The temperature sensor 143 is installed inside the enclosure 110 to measure the temperature of electrically connected parts of the distribution equipment, particularly the busbar parts to which the distribution cables are connected.

The temperature sensor 143 can be implemented as a non-contact temperature sensor to detect the temperature of the busbar in a non-contact form such as laser or infrared light, and the temperature sensor 143 is based on the measured temperature of the busbar. temperature signal can be transmitted.

The power transmission monitoring sensor 145 may include a temperature sensor for measuring the temperature of the power line, a voltage sensor for measuring the voltage, and a power transmission processor for determining whether power is transmitted through the power transmission line.

The temperature sensor and voltage sensor are connected to each phase (R, S, T) of the electricity supplied to the input and output terminals of the circuit breaker, and the transmission processor is connected to the power line according to the temperature measured by the temperature sensor and the voltage measured by the voltage sensor. transmission of can be determined.

For example, if the temperature measured by the temperature sensor is less than or exceeds the preset temperature, the power transmission processor determines that there is an error in power transmission, or if the voltage measured by the voltage sensor is less than or exceeds the preset voltage, the power transmission processor determines that there is an error in power transmission. It is determined that it has occurred, and it may be displayed on the display unit 157 or by a lamp such as an LED, depending on whether or not there is an abnormality.

Of course, whether or not there is a power transmission abnormality monitored by the power transmission monitoring sensor 145 may be provided to the management server 170 through the communication module 160, and the presence or absence of an abnormal power transmission may be displayed through the display unit 157. The temperature sensor of the monitoring sensor 145 may be the temperature sensor 143 configured in the sensor unit 140 or may be separately installed in the circuit breaker.

The power transmission monitoring sensor 145 detects the voltage or current of the primary side and the secondary side of the circuit breaker to detect erroneous wiring and may generate a voltage signal according to the occurrence of erroneous wiring.

As shown in FIGS. 1 to 3 , the switchboard 100 controlled by the active damping control method according to the embodiment of the present invention may include a damping controller 150 .

The damping controller 150 receives the digital pressure signal provided from the load cell 148, the slope signal measured from the tilt sensor 149, and the seismic wave signal measured from the earthquake sensor 149, and the damping control valve 127a It is possible to prevent damage to the switchboard 100 by adjusting the buffering force of the damper 120 in the form of controlling.

The damping controller 150 may include a decision control unit 151, a data storage unit 155, a synchronization processing unit 153, and a display unit 157.

The decision control unit 151 includes an opening/closing signal transmitted from the door open detection sensor 141, a voltage signal transmitted from the transmission monitoring sensor 145, a temperature signal transmitted from the temperature sensor 143, and an earthquake detection sensor 149. The transmitted seismic wave signal and the tilt signal detected by the tilt sensor 149 are provided to determine whether or not there is an abnormality, and if an abnormality occurs, it can be transmitted to the external management server 180 through the communication module 160. there is.

At this time, the communication module 160 may transmit information to the management server 180 through wired or wireless communication, and the communication module 160 may inform the outside of the abnormality by providing it to the management server 180 using IoT. there is.

For example, the decision control unit 151 informs the external management server 180 of the opening of the door through the communication module 160 when an opening/closing signal indicating that the opening/closing door is opened is transmitted from the door opening detection sensor 141. Alternatively, when the power transmission monitoring sensor 145 detects an abnormal power transmission state by a temperature sensor and a voltage sensor, the information may be provided to the management server 180 through the communication module 160.

In addition, when the temperature signal measured by the temperature sensor 143 is out of a preset temperature range, the determination control unit 151 provides the temperature signal to the management server 180 through the communication module 160 to notify the occurrence of an abnormal temperature. there is.

In addition, the earthquake detection sensor 149 notifies the management server 180 through the communication module 160 that an earthquake has occurred by detecting an earthquake and simultaneously receives a seismic wave signal, and the tilt detection sensor 149 When detecting that the inclination of the enclosure 110 is changed, the inclination of the enclosure 110 is notified to the outside through the communication module 160 to the management server 180 through the communication module 160, and the inclination signal according to the inclined angle can be provided.

Also, the decision control unit 151 may receive the digital pressure signal converted from the load cell 148 .

Here, the control method of controlling the damper 120 according to the digital pressure signal, the seismic wave signal, and the slope signal received from the decision control unit 151 will be described in more detail when the following active damping control method is described.

The data storage unit 155 may store bolt information for fastening the switchboard 100 .

Here, bolt information stored in the data storage unit 155 can be easily performed by finding bolt information for fastening the switchboard 100 to be fastened during future maintenance.

The data storage unit 155 includes pressure information provided from the load cell 148 other than voltage information, seismic wave information measured by the earthquake sensor 149, tilt information measured by the tilt sensor 149, and temperature sensor 143. ) Stores information provided by each sensor, such as temperature information measured by the sensor 141, opening/closing information provided by the door open detection sensor 141, and voltage information transmitted by the power transmission monitoring sensor 145, and stores the stored information in the communication module 160 ) It may be transmitted to the management server 180 through.

The data storage unit 155 may utilize the stored information as a generator for controlling the damping controller 150 later.

Synchronization processing unit 153 is a seismic wave signal provided from the seismic wave sensor, the slope signal measured by the slope sensor 149, and the load cell 148 so that each damper 120 is synchronized and controlled at the same time. All pressure signals can be synchronized.

The synchronization processing unit 153 generates a synchronization signal of a preset vibration period (Hz), synchronizes a digital pressure signal, a seismic wave signal, a slope signal, etc. to the synchronization signal, and each damper 120 is It is possible to actively control the switchboard 100 by simultaneously transmitting a control signal for controlling the damper 120 control valve.

The digital pressure signal, seismic wave signal, and slope signal provided to the synchronization processing unit 153 are measured by each sensor to prevent malfunction, and noise data values are removed.

The active control method according to the synchronization processing unit 153 will be described in more detail when the damping control method is described below.

The display unit 157 can display information measured by each sensor, and the display unit 157 can display even when an error occurs according to the determination of whether or not there is an error in the determination control unit 151, and the display unit 157 can display each It may be implemented as a lamp that visually displays information, or a display panel such as LCD or OLED, and may include a speaker or buzzer to display information audibly, such as sound.

The switchboard 100 controlled by the active damping control method according to the embodiment of the present invention may include a fire suppression device 170.

The fire suppression device 170 is installed inside the enclosure 110 to suppress fire in the distribution facility.

The fire suppression device 170 includes a fire detection sensor, and when the fire detection sensor detects a fire inside the enclosure 110, it may suppress the fire in the form of spraying a fire extinguishing liquid.

When the fire detection sensor detects a fire while the fire extinguishing liquid is stored in the extinguishing liquid tank in a compressed state, the fire suppression device 170 opens the valve of the extinguishing liquid tank to spray the compressed extinguishing liquid from the extinguishing liquid tank into the enclosure 110. It may be configured to, and a spray nozzle for spraying the digestive fluid may be installed inside the housing 110.

Hereinafter, the action and effect between each component will be described together with the active damping control method of a switchboard according to an embodiment of the present invention.

In the switchboard 100 controlled by the active damping control method of the switchboard according to the embodiment of the present invention, a damper 120 for buffering vibration is installed between the enclosure 110 where the power distribution equipment is installed and the floor, and the damper 120 is composed of a cylinder part 121 supported on the floor and a piston part 123 protruding from the cylinder part 121, and the piston part 123 is the elastic force of the shock absorber spring 125 in the cylinder part 121 is supported by

In addition, an inlet 127 through which fluid flows in and out of the lower part of the piston part 123 is formed in the cylinder part 121, and the inlet 127 has a damping control for controlling the fluid moving to the inlet 127 A valve 127a is installed.

On the other hand, a load cell 148 for measuring the pressure applied to the housing 110 is installed between the piston unit 123 and the housing 110, and the housing 110 has a door open sensor for detecting the opening and closing of the door. 141, a power transmission monitoring sensor 145 for detecting the power transmission state of the power distribution facility, and a temperature sensor 143 for measuring the temperature of the bus bar in a non-contact manner are installed.

In addition, a tilt sensor 149 for measuring the inclination of the housing 110 and an earthquake sensor 149 for measuring an earthquake are installed in the housing 110.

And, in the enclosure 110, the damping control valve 127a is controlled according to the slope of the enclosure 110, the occurrence of an earthquake, and the pressure measured by the load cell 148, thereby adjusting the damping force of the damper 120 A damping controller 150 for adjusting the buffering force of the enclosure 110 is installed.

In addition, the damping controller 150 transmits the door open/close signal from the door open detection sensor 141, the power transmission monitoring sensor 145, and the temperature detection sensor 143 through the determination control unit 151 and the power transmission monitoring sensor 145. The power transmission signal by the temperature sensor 143 and the temperature signal by the temperature sensor 143 are received, and an abnormality is judged from a preset value, and notified to the management server 180 or displayed on the display unit 157 .

In addition, the damping controller 150 provides a synchronization signal to simultaneously control the damping control valves 127a installed in each damper 120 from the synchronization processing unit 153, and the information measured by each sensor is stored in the data storage unit ( 155) is stored.

Of course, the data storage unit 155 stores not only the information measured by each sensor, but also bolt information required when assembling the switchboard 100, so that future maintenance can be easily performed. Including 157, the information measured by each sensor and whether there is an abnormality can be displayed and notified.

In addition, the damping controller 150 includes information measured by each sensor stored in the data storage unit 155 and information on whether or not there is an abnormality determined by the decision control unit 151 Communication for communicating to the management server 180 located outside Module 160 is installed.

Here, an AD converter 130 may be installed in the damping controller 150 to convert an analog pressure signal measured by the load cell 148 into a digital pressure signal.

The damping controller 150 of the switchboard 100 configured as described above converts the opening/closing signal generated from the door opening detection sensor 141 through the determination control unit 151 when the door opening detection sensor 141 detects the opening of the opening/closing door. After the data is stored in the data storage unit 155, the decision control unit 151 displays the door open on the display unit 157 to notify or informs the external management server 180 through the communication module 160. can

In addition, the power transmission monitoring sensor 145 measures the current and voltage of the primary power supply and the secondary power supply, sends them to the data storage unit 155 and stores them, and displays the stored current and voltage values on the display unit 157 to inform them, When it is transmitted to the management server 180 and notified and the current value or voltage value set in advance in the primary and secondary power sources is out of range, it is determined that a problem has occurred in power transmission or distribution, and an abnormality is displayed on the display unit 157. It is notified by displaying it, or by providing it to the management server 180 through the communication module 160 to notify the abnormality.

In addition, the temperature signal of each bus bar measured by the temperature sensor 143 is stored in the data storage unit 155 and transmitted to the management server 180 through the communication module 160. When the measured temperature value is out of the range of the preset temperature value, it is determined that overheating has occurred and the occurrence of the abnormality is displayed on the display unit 157 or notified to the management server 180 through the communication module 160.

And, when a fire occurs inside the enclosure 110 and the fire detection sensor detects a fire, the fire detection sensor opens the valve of the fire extinguishing fluid tank and sprays the compressed extinguishing fluid into the enclosure 110 through the injection nozzle. The fire can be extinguished in the form of

On the other hand, when the enclosure 110 is tilted, an impact due to an external force, or an earthquake occurs, it is controlled by the active damping control method of the switchboard according to an embodiment of the present invention.

At this time, the damper 120 may be in a state in which the load cell 148 installed in each damper 120 is initialized to a value of “0” in a state in which the load of the enclosure 110 is applied.

As shown in FIG. 4, the active damping control method of the switchboard according to the embodiment of the present invention includes a control method in three situations: tilting of the enclosure 110, impact by external force, and earthquake. Explain.

First, when vibration occurs due to an instantaneous impact caused by an external force, while the damper 120 at the position where the impact is applied is pressurized, the pressure change is measured in the load cell 148, and the measured pressure signal is sent to the damping controller ( 150) (S10).

At this time, the pressure signal measured by the load cell 148 is converted into a digital pressure signal through the AD converter 130 (S20) and transmitted to the synchronization processing unit 153 of the damping controller 150, and in a plurality of load cells 148 Even if the pressure change is measured only in one, the pressure signals measured in all the load cells 148 are transmitted to the synchronization processing unit 153.

Of course, when an impact of the enclosure 110 occurs due to an external force, not only a change in the load of the load cell 148 occurs, but also a change in the inclination of the enclosure 110 can be detected by the tilt sensor 149, When an impact occurs, since the tilt of the enclosure 110 measured by the tilt sensor 149 continuously changes, the tilt sensor 149 only serves to determine the occurrence of an impact, damping control It does not participate in the control of the valve 127a.

In addition, since there is a difference between vibrations when an earthquake occurs and an external shock occurs, the earthquake detection sensor 149 does not detect an external shock as the occurrence of an earthquake.

Meanwhile, when noise that is difficult to measure in the load cell 148 enters the digital pressure signal to the synchronization processing unit 153, the synchronization processing unit 153 removes the noise data (S30).

The digital pressure signals provided from all the load cells 148 from which noise data has been removed are synchronized with the synchronization signal having a preset vibration cycle generated from the synchronization processing unit 153 (S40).

The synchronization signal may have time data so as to know the generated time and control time according to the preset vibration period.

Then, the digital pressure signal provided as the synchronization signal is provided to the decision control unit 151, and the decision control unit 151 controls the damping control valve 127a of each damper 120 according to the pressure value measured by each load cell 148. are simultaneously controlled (S50).

For example, the decision control unit 151 controls the outlet inlet 127 of the damping control valve 127a of the damper 120 where the load cell 148 with increased pressure among the pressure values provided from the plurality of load cells 148 is located. By closing and blocking the fluid discharged to the cylinder part 121 according to the pressurization of the piston part 123, the piston part 123 firmly supports the housing 110, thereby improving the bearing capacity in the part where the pressure is generated and At the same time, it is possible to prevent the enclosure 110 from tilting in that direction.

Here, the synchronization signal of the preset vibration period may be a frequency having a vibration period in the range of 0.1 Hz to 60 Hz.

At this time, when the synchronization signal is less than 0.1 Hz, the speed of opening and closing the inlet 127 is too fast, so there is a restriction on the fluid moving to the inlet 127 of the fluid, and if it exceeds 60 Hz, the damper 120 is applied The response speed of the damper 120 relative to the applied pressure is slow, and thus the buffering effect may decrease.

In addition, in a state in which the damping control valve 127a closes the outlet 127 by the decision control unit 151 to supplement the bearing capacity of the housing 110, the pressure value measured by the load cell 148 located at that part is low In this case, the decision control unit 151 controls the damping control valve 127a to open the outlet 127 so that the fluid flowing out of the cylinder part 121 flows back into the cylinder part 121, so that the piston part (123) can be quickly returned by the elastic force of the buffer spring (125).

Here, when the outlet 127 is closed by the damping control valve 127a, the piston part 123 is supported by the buffer spring 125 and at the same time, the enclosure ( 110) can be supported more firmly.

On the other hand, the determination control unit 151 controls the outlet inlet 127 through the damping control valve 127a when the amplitude (vertical displacement) of the seismic wave increases in response to the amplitude of the seismic wave (a state in which the load is applied to the damper 120). is closed, and when the amplitude of the seismic wave is lowered (a state in which less load is applied to the damper 120), the damping control valve 127a is also opened in the form of opening the outlet 127 through the damping control valve 127a can also control.

For example, the seismic wave repeats high and low amplitudes at regular oscillation cycles. When the amplitude of the seismic wave increases in response to the amplitude of the seismic wave, the load cell 148 increases the pressing force. The damping control valve 127a is controlled to close, and the damping control valve 127a can be controlled to open the outlet 127 because the pressing force of the load cell 148 decreases when the amplitude of the seismic wave decreases.

In this way, even if the damping controller 150 controls the damping control valve 127a according to the amplitude of the seismic wave, when the pressure measured by the load cell 148 increases, the load cell prioritizes the pressure measured by the load cell 148 rather than the amplitude of the seismic wave. The damping control valve 127a may be controlled according to the pressure of 148.

Meanwhile, in the embodiment, it is described that the damping control valve 127a is turned on and off, but the damping control valve 127a may open and close the outlet 127 in inverse proportion to the pressure measured by the load cell 148.

In this way, when vibration occurs in the enclosure 110 due to an external force, each load cell 148 measures the pressure in real time, and simultaneously controls the buffering force of the plurality of dampers 120 in real time based on the measured value, so that the external force It is possible to prevent the enclosure 110 from being tilted due to the inclination and to effectively buffer the impact.

Of course, when an external impact is sensed according to a load change by the load cell 148, the damping controller 150 may inform the outside that the impact has occurred through the display unit 157 or the communication module 160.

Second, when an earthquake occurs, a seismic wave signal is provided to the damping controller 150 according to the seismic wave measured by the earthquake sensor 149 .

When the seismic wave signal is transmitted to the damping controller 150, the synchronization processing unit 153 of the damping controller 150 generates a synchronization signal having an oscillation period corresponding to the seismic wave, and the load cell 148 according to the shaking of the enclosure 110 The pressure signal according to the pressure change measured in is changed to a digital pressure signal through the AD converter 130.

In addition, the digital pressure signals generated from all load cells 148 become synchronization signals generated from the synchronization processing unit 153 of the damping controller 150, and the synchronization signals correspond to seismic waves measured by the earthquake sensor 149 converted to an oscillation period.

For example, if the seismic wave measured by the earthquake detection sensor 149 is 5 Hz, the synchronization signal is also generated in the synchronization processing unit 153 at 5 Hz, and the digital pressure signals of all load cells 148 are also synchronized, and the synchronized digital pressure signal Accordingly, by simultaneously controlling the damping control valves 127a installed in all dampers 120, the effect of the buffering force can be improved.

Here, when the seismic wave and the synchronization signal are synchronized, the speed for controlling the damping control valve 127a is controlled correspondingly, so that the damping control valve 127a is controlled in response to the change in the amplitude of the earthquake, thereby improving the buffering effect. there is.

Of course, even if the seismic wave does not have a constant period and changes, the synchronizing signal may also be varied in response to the seismic wave to output the synchronizing signal.

The digital pressure signal measured by all load cells 148 is synchronized with the synchronization signal synchronized with the seismic wave, and by controlling each damping control valve 127a at the same time in response to the pressure of the digital pressure signal, effectively the enclosure according to the vibration of the earthquake ( 110) can adjust the buffering power, and it is possible to prevent the enclosure 110 from overturning.

For example, when the pressure of the digital pressure signal applied from the load cell 148 increases, the damping controller 150 closes the outlet 127 by controlling the damping control valve 127a to solidify the bearing force, and to lower the pressure than the previous pressure. When the pressure decreases, the outlet inlet 127 is opened again, or if the pressure measured by the load cell 148 is higher than the reference pressure around the preset reference pressure, the outlet inlet 127 is closed and then lowered than the reference pressure. The inlet 127 may be controlled to open.

Here, the damping control valve 127a is configured to adjust the opening of the outlet port 127, and the damping controller 150 is inversely proportional to the pressure measured by the load cell 148 to control the flow rate flowing in and out of the outlet port 127 You can also adjust the opening to do so.

On the other hand, even when an earthquake occurs, the tilt change of the housing 110 can be measured by the tilt sensor 149, but when an earthquake occurs, since the tilt measured by the tilt sensor 149 changes from time to time, the tilt sensor ( The slope measured in 149) is only a basis for determining whether an earthquake has occurred in the determination control unit 151, and does not participate in controlling the damping control valve 127a.

Then, when an earthquake occurs in the earthquake detection sensor 149 and the seismic wave signal is transmitted to the damping controller 150, the damping controller 150 informs the outside of the occurrence of an earthquake through the display unit 157 or the communication module 160. can inform

Thirdly, when tilting occurs in the enclosure 110, for example, sagging occurs on the bottom of the enclosure 110 or some power distribution equipment is added to the inside of the enclosure 110, and the enclosure 110 is tilted. The ground tilt sensor 149 transmits a tilt signal according to a change in tilt of the enclosure 110 to the damping controller 150.

The damping controller 150 controls the damping control valve 127a installed in the damper 120 at a position corresponding to the tilted position of the housing 110 to prevent the tilting of the housing 110 according to the inclination signal to control the outlet inlet ( 127) is closed.

When the outlet 127 is closed by the damping control valve 127a, the supporting force of the damper 120 at an inclined position of the housing 110 supports the portion of the housing 110 more strongly than other dampers 120 Therefore, even if vibration is applied to the enclosure 110, it is possible to prevent the enclosure 110 from being inverted.

Of course, when the earthquake detection sensor 149 detects the occurrence of an earthquake or the load cell 148 detects a change in pressure while the damper 120 is controlled by the tilt sensor 149, when an earthquake occurs And, like when an impact occurs, the damping control valve 127a can be controlled in response to the synchronization signal.

Therefore, in the switchboard 100 controlled by the active damping control method of the switchboard according to the embodiment of the present invention, when vibration occurs in the enclosure 110, the pressure measured by the load cell 148 is synchronized with the synchronization signal, and each By simultaneously controlling all the dampers 120 in response to the pressure, it is possible to improve the cushioning properties of the enclosure 110 and prevent the enclosure 110 from tipping over.

In addition, when an earthquake occurs, the vibration period of the seismic wave and the vibration period of the synchronization signal are matched, and the damper 120 is controlled in response to the change of the seismic wave, thereby improving the buffering property of the damper 120 to improve the housing according to the vibration of the earthquake (110) and damage to power distribution facilities can be prevented.

In addition, when the door open is detected by the door open sensor 141, the temperature of the bus bar is detected by the temperature sensor 143, and the power is detected by the power transmission monitoring sensor 145, an abnormality occurs. , the display unit 157 or the communication module 160 can notify the outside and quickly take action.

In addition, a fire suppression device 170 is installed inside the enclosure 110 to quickly extinguish a fire occurring inside the enclosure 110 .

In the above, the embodiments of the present invention have been described, but the scope of the present invention is not limited thereto, and is easily changed from the embodiments of the present invention by those skilled in the art to which the present invention belongs and recognized as equivalent. including all changes and modifications within the scope of

100: switchboard 110: enclosure
120: damper 121: cylinder part
123: piston part 125: shock absorber spring
127: outlet inlet 127a: damping control valve
130; AD converter 140: sensor unit
141: door open sensor 143: temperature sensor
145: transmission monitoring sensor 147: earthquake detection sensor
148: load cell 149: tilt sensor
150: damping controller 151: decision control unit
153: synchronization processing unit 155: data storage unit
157: display unit 160: communication module
170: fire suppression device 180: management server

Claims (8)

Enclosures accommodating power distribution facilities, a plurality of dampers installed between the floors on which the enclosures are installed to buffer shocks applied to the enclosures, and fluid flowing in and out of the dampers installed in each damper to control the buffering power of the dampers A damping control valve for controlling, a load cell installed between the enclosure and each of the dampers to measure the pressure applied to the enclosure, and a damping control valve according to the pressure measured by the load cell to buffer the enclosure As an active damping control method of a switchboard including a damping controller for controlling,
Control of the damping controller is
Converting the pressure measured by each load cell into a digital pressure signal;
Synchronizing the digital pressure signal converted from each load cell with a synchronization signal; and
Controlling each of the damping control valves simultaneously according to a digital pressure signal synchronized with the synchronization signal,
The switchboard includes an earthquake detection sensor for measuring seismic waves of an earthquake,
The active damping control method of a switchboard, characterized in that the damping controller controls the damping control valve by synchronizing the seismic wave measured by the earthquake sensor with the synchronization signal. According to claim 1,
Between the step of converting to the digital pressure signal and the step of synchronizing with the synchronization signal,
An active damping control method of a switchboard comprising the step of removing noise from the digital pressure signal to prevent malfunction of the damping control valve. delete According to claim 1,
The preset synchronization signal is
Has a vibration period (Hz) corresponding to the vibration period (Hz) of the seismic wave measured by the earthquake sensor,
The active damping control method of a switchboard, characterized in that the damping controller controls the damping control valve according to the cycle of the synchronization signal. According to claim 1,
The damping controller
An active damping control method of a switchboard, characterized in that for controlling the damping control valve in response to when the amplitude of the seismic wave measured by the earthquake sensor decreases and increases. According to claim 1,
The switchboard
Further comprising a tilt sensor for detecting the tilt of the enclosure,
The damping controller
Active damping control method of a switchboard, characterized in that for controlling the damping control valve when the tilt sensor detects the tilt of the enclosure. According to claim 1,
The switchboard
A sensor unit providing information for determining whether the switchboard is abnormal,
The sensor part
An earthquake detection sensor for detecting the earthquake, a tilt sensor for detecting the inclination of the enclosure, a power transmission monitoring sensor for monitoring the power transmission state of the distribution facility, a temperature detection sensor for detecting the temperature of the distribution facility, and the opening of the door of the enclosure Active damping control method of a switchboard, characterized in that it comprises a door open sensor for detecting. A switchboard controlled by the active damping control method of a switchboard according to claim 1.

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