KR101976412B1 - Seismic isolation device and Seismic motion protecting system including the same - Google Patents

Abstract

The present invention relates to a seismic isolation apparatus and a seismic vibration protection system using the same, and more particularly, to a seismic isolation apparatus applicable to an electric structure including a solar power generation system, an incoming panel, a switchboard, a connection panel, an inverter, a control panel (motor, pump, heater, etc.), and an energy storage system (ESS) and upon an occurrence of a seismic vibration, capable of absorbing and buffering a vibration generated therefrom and transmitted to the electric structure, and an seismic vibration protection system using the same. The seismic isolation apparatus according to the present invention comprises: a lower fixing plate fixed to a ground; a damping unit provided to protrude on the lower fixing plate and having elasticity to absorb the seismic vibration; an upper fixing plate fixed to the damping unit and detachably coupled to the structure; and, a tension rod provided to connect the upper and lower fixing plates and absorbing and dissipating the seismic vibration upon the occurrence of a relative displacement.

Description

[0001] SEISMIC ISOLATION DEVICE AND SEISMIC MOTION PROTECTION SYSTEM [0002]

An inverter, a control panel (motor, pump, heater, etc.), an ESS (Energy Storage System), and the like. The present invention relates to a vibration isolation device and a vibration damping protection system using the vibration isolation device. More particularly, And more particularly, to an isolation device that functions to absorb and cushion vibrations transmitted from the vibration to an electrical structure when a ground vibration is generated, and a vibration and vibration protection system using the same.

Generally, the photovoltaic system converts the direct current produced by the solar module into an alternating current by the inverter and supplies it to each customer. Such a photovoltaic power generation system is composed of a photovoltaic module that supplies DC power corresponding to received sunlight, a connection panel that facilitates wiring of many wirings between the photovoltaic module and the inverter, And an inverter for converting the developed direct current power into an alternating current power.

The connection panel is configured to minimize the fault range when a fault occurs in the photovoltaic module, to prevent accidents and to find fault points. In addition, according to the configuration and capacity of the photovoltaic module, a proper parallel group is connected, the cable is connected to the inverter, and the connection of a plurality of photovoltaic modules is arranged so as to recognize the circuit. .

Such a connection panel is made up of a DC output switch, a lightning protection element, a backflow prevention element, a terminal block, a fuse or a switch, and an output terminal switch for measuring insulation resistance or checking a short-circuit current periodically.

On the other hand, in the connection layer, the surrounding insulation is oxidized and pyrolyzed by the arc discharge of the internal line due to vibration and impact to form a carbonized conductive path. As a result of the generation of joule heat due to the movement of electrons, there is a problem that the dielectric strength is lowered around the carbonized conductive path and electric shock or electric shock occurs.

With regard to the production and storage of environmentally friendly energy, an energy storage system (ESS) stores excessively produced electric energy and makes it possible to use it when necessary when it is needed. In general, System, and wind power generation system, it is designed not only to stabilize the output when producing new and renewable energy but also to be used in emergency such as power failure.

In recent years, interest in renewable energy has increased rapidly due to unbalanced power supply and demand, and the development of technologies to utilize new and renewable energy through ESS to save electricity and use it at the required time have.

In particular, the ESS market has been growing as the installation of ESS for public buildings newly built has become mandatory, and the installation of ESS has been increased for energy saving in private buildings as well.

In recent years, along with the sudden change of the earth environment, the earthquake zone has been active in Asia for several years. In order to respond to the earthquake in Korea, the government has developed an advanced earthquake response system In addition to the announcement of the need for seismic design for buildings above the floors (2005), seismic design standards for firefighting facilities (2013) are being set up, and seismic design for all facilities is being strengthened.

For example, Korean Patent Registration No. 10-1210655 suggests a seismic design for a solar power generation system. Specifically, in this prior art, a coil-type earthquake-resistant spring-based seismic structure is proposed. This coil-type seismic spring-based seismic structure has some buffering effect against seismic load, but when the seismic load is large, it does not sufficiently dissipate this energy, There is a problem of safety accidents such as personal injury.

As a result, it is possible to provide a solar power generation system of a solar power generation system, such as an inverter and a connection unit of a photovoltaic power generation system, such as an electric power generation system, an electric power distribution system, a control panel (motor, pump, heater) Secondary damage due to earthquake damage caused by an earthquake is large, and therefore it is necessary to stably protect these electrical structures from earthquake motions first.

Korean Patent No. 10-1664340 Korean Patent No. 10-1210655

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an earthquake-resistant apparatus that can be installed in an electric structure, absorb vibration energy transmitted from an earthquake to an electric structure, The purpose is to provide.

Another object of the present invention is to provide an isolating apparatus which can effectively cope with relative displacement when an earthquake occurs and has excellent restoring force in the original phase.

Another object of the present invention is to provide a seismic vibration protection system capable of monitoring earthquake-induced vibration from an electric structure and automatically performing an action on an electric structure in an emergency situation such as an earthquake.

을 만족하고, 여기서 H는 면진장치의 설치 높이, L은 전기구조물의 전도방지를 위한 이동제한 거리인 것을 특징으로 한다.
According to an aspect of the present invention, there is provided an earthquake-resistant apparatus installed between a ground and an electric structure to absorb and dissipate earthquake-induced vibration when an earthquake occurs; An electrical structure connected to the isolation device and having a control module; And a server and an administrator terminal connected to the control module through a network, wherein the isolation device comprises: a lower fixed plate fixed to the ground; A damping portion protruding from the lower fixing plate and having elasticity to absorb the earth vibration; An upper fixing plate fixed to the damping portion and detachably coupled to the structure; The damping unit has a lower end portion that is wider than an upper end portion of the damping unit and an outer circumferential surface that connects the upper end portion and the lower end portion is formed at an angle of 45 degrees And the tension rod is a wire rope formed by twisting a plurality of wires, each of the wires of the tension rods having a center of lead and a lead coated with stainless steel, and the control module includes an external server and a manager A communication unit for performing communication with the terminal; A vibration and vibration sensor for detecting inclination of an electric structure due to vibration and vibration; A blocking portion for blocking electrical equipment provided in the electrical structure; And a processor for determining an on and off operation of the shutoff unit based on the command of the server, wherein the server evaluates the earthquake motion severity grade based on the value of the earthquake motion sensor received from the communication unit of the control module, , The electric structure is normally operated in the first step, the alarm process is further carried out in the second step, the emergency power generation process is further carried out in the third step, and the control to further perform shutdown of the electric structure in the fourth step And instructs the processor of the module to issue an instruction.
Preferably, the tension rod is bent and protruded outward between the upper fixing plate and the lower fixing plate.
In addition, the length l of the tension rod is given by the following formula

Where H is the installation height of the seismic isolation device and L is the movement restricting distance for preventing the electrical structure from falling.

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

According to the isolation device of the present invention, it is possible to provide an isolation device between the ground (bottom surface) and the electrical structure to absorb the vibration energy transmitted from the ground to the electrical structure when the earthquake occurs, There are advantages.

According to the present invention, it is possible to provide a seismic isolation device that can efficiently dissipate (reduce) seismic energy by effectively responding to a relative displacement by a tension rod when an earthquake occurs, prevent conduction, and provide excellent restoring force.

According to another aspect of the present invention, there is provided an earthquake-proof system for receiving a earthquake-induced vibration value detected from a earthquake-induced vibration sensor installed in an electric structure, transmitting the received earthquake-induced vibration value to the server in real time or at a predetermined time period, It is possible to control the operation and interruption of the electrical structure according to the value to prevent the electrical structure from being damaged.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an installation example of a seismic isolation device according to the present invention;
2 is a configuration diagram of a seismic isolation system according to the present invention.
Fig. 3 is a view showing a separation between the isolation device and the tension rod according to the present invention.
4 is a sectional view of the isolation device according to the present invention.
5 is a view showing an example of the installation of a tension rod of a seismic isolation device according to the present invention.
6 is a sectional view of a wire loop showing an example of a tension rod of a seismic isolation device according to the present invention;
FIG. 7 is a view schematically showing an example of a vibration and vibration protection system including the isolator of FIGS. 1 to 5. FIG.

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

The terms used in the present invention are defined in consideration of the functions of the present invention and may vary depending on the intention or custom of the user or the operator. Therefore, the definitions of these terms are meant to be in accordance with the technical aspects of the present invention As well as the other.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention and are incorporated in and constitute a part of this specification. And an element which is replaceable as an equivalent in the component.

In addition, optional terms in the following embodiments are used to distinguish one element from another element, and the element is not limited by the terms.

In the following description of the present invention, a detailed description of known arts which may unnecessarily obscure the subject matter of the present invention will be omitted.

1 to 4 are views showing the configuration and the installation state of the isolation device according to the present invention.

As shown in FIG. 1, the isolation device 100 according to the present invention is installed between a ground (bottom surface or wall surface) and a case 200 of an electrical structure or an electrical structure to absorb and dissipate earthquake vibration when an earthquake occurs .

The electric structure 200 includes an inverter used in a photovoltaic power generation system, an inverter (not shown) including a connection panel, a water main, a switchboard, a control panel (motor, pump, heater, etc.) Electronic equipment capable of receiving or controlling a relatively large amount of power energy or leading to secondary damage in case of damage due to earthquake excursion, such as an energy storage system, It is apparent that the present invention is also applicable to a cubicle (for example, a closed water distribution system, a closed distribution board, a closed control panel, a closed inverter, etc.) in which the electric structure 200 is housed as described above.

For reference, a cubicle is also referred to as a metal clad or a closed enclosure. Normally, VCB, VCS, VC, ACB, MCCB, PCB, reactor, inverter and the like can be accommodated in the cubicle.

Since the seismic isolation device is installed between the ground and the lower surface of the electrical structure, the electrical structure 200 is safely protected from the earthquake by the seismic isolation device 100, so that even when a natural disaster such as an earthquake occurs, The function can be smoothly performed. In the electric structure 200, a control module 300 provided with a true vibration detection sensor is provided, which will be described in more detail in a vibration and vibration protection system to be described later.

2 to 4, the vibration isolator 100 includes a lower fixed plate 110 fixedly mounted on the ground, a lower fixed plate 110 protruding from the upper surface of the lower fixed plate 110, An upper fixing plate 140 fixed to the upper surface of the damping unit 120 and detachably coupled to a lower surface of the electrical structure 200 and an upper fixing plate 140 and a lower fixing plate 140. The damping unit 120 includes a damping unit 120, And a tension rod 130 for absorbing and dissipating the earthquake vibration when the relative displacement is generated.

Here, the ground refers to an ordinary ground, but in the case of a building, it may be a floor surface or a wall surface. The lower fixing plate 110 may be a flat plate made of stainless steel and fixed to the ground. The lower fixing plate 110 may be formed in a circular or polygonal shape. A plurality of mounting holes 111 are formed at a predetermined interval along the circumferential direction. The mounting hole 111 is provided with a mounting bolt 151 for fixing the lower fixing plate 110 to the ground.

At this time, the mounting bolts 151 to be fastened to the lower fixing plate 110 are preferably provided as anchor bolts. The mounting bolts 151 penetrate through the mounting holes 111 of the lower fixing plate 110, So that the lower fixing plate 110 can be firmly fixed to the ground.

The damping portion 120 is formed in a conical shape made of a rubber material, and its lower end portion is wider than the upper end portion, so that the damping portion 120 has stable grounding force. The outer circumferential surface connecting the upper end portion and the lower end portion of the damping portion 120 is formed to be inclined at an angle of an angle as shown in FIG. Since the damping portion 120 is formed to have a tapered trapezoidal cross section of 45 degrees, the load applied from the upper surface of the damping portion 120 having a narrow cross section is dispersed to the lower surface of the damping portion 120 having a relatively wide cross- So that a stable distribution of the load can be achieved.

Further, since the outer circumferential surface of the damping portion 120 is formed to be inclined at an angle of 45 degrees, when the load is applied, the rubber receives compression elasticity in a direction perpendicular to the paper surface, and the horizontal load can be stably supported by shear elasticity .

Since the damping unit 120 is formed of a rubber material, it is possible to buffer vibrational energy during vibration such as shock due to earthquake vibration by its elastic force, absorb the earthquake energy by high damping of the rubber itself, It has an advantage that the original coat can be formed by self-restoring force after the occurrence.

The upper and lower ends of the rubber damping portion 120 are fixed to the upper and lower fixing plates 140 and 110, respectively. The upper and lower fixing plates 140 and 110 are in contact with the upper and lower fixing plates 140 and 110, respectively. The damping unit 120 is firmly fixed to the upper and lower fixing plates 110 and 140 through an operation of vulcanizing the upper and lower ends of the damping unit 120.

Further, as shown in FIG. 6, the tension rod 130 is formed by a wire made of a plurality of wires made of stainless steel twisted together. Specifically, one strand of stainless steel wires forms one strand wire around a lead core, and a plurality of strand wires thus formed are gathered and twisted around a lead core to form a single wire rope. As shown in Fig. 6, the strands forming one strand wire are formed of strands having a relatively small diameter in the vicinity of the core material and the strands having a relatively large diameter in the distance from the core are used. This is desirable for increasing the frictional force when the load is applied.

When a wire rope is used as the tension rod, vibration energy due to a load applied from the electric structure 200 or an earthquake or the like is applied to each of the wires forming the wire rope.

Particularly, when energy is applied to the wires of the wire rope 130 formed by twisting each other due to earthquake or vibration, such vibration energy causes different deformation of the wires of the wire rope described above, and deformation of such different wires Increases the frictional force between the wires. The applied vibration energy is a very important factor because it can be offset by the friction energy of the wires.

Also, since lead is used as the core of the wire rope 130 in the present invention, when the vibration acts on the wire rope, the frictional force between the lead core and the surrounding strand is increased due to the firing action of the lead, have.

Each of the wire ropes or the tension rods 130 is bent outwardly between the upper and lower fixing plates 140 and 110 so as to be protruded. Thus, when a load is applied to the upper or lower portion of the seismic isolation device 100, the tension rod 130 absorbs the load due to the friction of the wire rope of the tension rod 130, The load is absorbed and dissipated.

The upper end fixing portion 131 is embedded in and fixed to the outer surface of the upper fixing plate 140 and the lower end fixing portion 132 is embedded in the upper surface of the lower fixing plate 110 for rigid operation. And is fixed.

The upper end fixing portion 131 of the tension rod 130 is pressed or fixed by a fixing screw 142 that is fixed to the upper fixing plate 140 while being embedded in the upper fixing plate 140, And may be fixedly fixed by through-hole coupling.

The lower end fixing part 132 of the tension rod 130 is bent so as to be orthogonal to the lower fixing plate 110 and embedded in the upper surface of the lower fixing plate 110. In this state, The lower fixing part 132 of the tension rod 130 may be pressed or fixedly connected to the lower fixing plate 110 by fastening the fixing screw 142 as shown in FIG.

When the relative displacement between the ground (ground) and the electric structure 200 due to earthquake-induced vibration occurs, the tension rod 130 thus provided elastically bends or deforms the internal friction of the tension rod 130, When the relative displacement caused by the earthquake vibration occurs excessively, there is an advantage in that the electric structure 200 can be prevented from being conducted by the tension of the tension rod 130, and the lower fixed plate 110 and the upper fixed plate 140).

5 is a view showing an example of the installation of a tension rod (or wire rope) 130 as described above. 5 and the tension rod 130 are fixed between the lower fixing plate 110 and the upper fixing plate 140 as described above. In the example shown in Fig. 5, R denotes the installation radius of the tension rod 130, H denotes the installation height of the isolation device, a denotes the outer distance (or protrusion distance) of the tension rod, The length l of the tension rod 130 preferably satisfies the following formula.

The upper fixing plate 140 is a block made of stainless steel fixed to the lower surface of the electric structure 200, and may be formed in a circular or polygonal shape.

A coupling groove 141 for coupling the upper fixing plate 140 to the lower surface of the main body of the electrical structure 200 is formed at the center of the upper surface of the upper fixing plate 140, The upper fixing plate 140 is fixed to the electrical structure 200 by fastening the mounting bolt 150 passing through the main body of the electrical structure 200.

A plurality of fixing screws 142 are fixed to the upper fixing plate 140 around the coupling groove 141 at predetermined intervals and the fixing screws 142 are fastened to the upper fixing plate 140, The upper end of the tension rod 130 embedded in the upper fixing plate 140 is pressed or fixed through the upper end of the tension rod 130 to be fixed thereto.

1, the lower fixing plate 110 is fixed to the ground by a plurality of mounting bolts 151 formed of anchor bolts, and the upper fixing plate 140 Is fixed to the lower surface of the electrical structure 200 by a mounting bolt 150. [

When an earthquake occurs in this state, the earthquake vibration transmitted to the electric structure 200 from the ground is absorbed and buffered by the vibration isolator 100 provided on the lower surface of the electric structure 200 to be transmitted to the electric structure 200 Thereby weakening the earthquake energy.

That is, the high acceleration generated in the horizontal direction of the ground can be reduced by the damping unit 120 and the plurality of tension rods 130 constituting the isolation device 100 of the present invention, The inertia force of the components of the electric structure 200 is reduced by absorbing and dissipating the earthquake energy generated in the ground by the tension rod 130 having the friction damping function, .

Particularly, when an earthquake occurs, a relative displacement occurs between the ground and the electrical structure 200, which occurs through the isolator 100 connecting the ground and the electrical structure 200.

That is, the lower fixed plate 110 fixed to the ground surface and the upper fixed plate 140 fixed to the lower surface of the electric structure 200 are mutually displaced with respect to each other. Each of the tension rods 130 elastically bends or deforms to absorb and dissipate the earthquake energy.

When the relative displacement due to the earthquake-induced vibration occurs excessively, it is possible to prevent the electric structure 200 from falling (tumbling) by the tension of each tension rod 130.

In addition, when the earthquake occurs, the up-and-down vibration due to the earthquake vibration causes the damping part 120 made of a rubber material having a high damping function to absorb and buffer the earthquake energy, So that the structure 200 is returned to its original position.

Since the outer circumferential surface of the damping portion 120 is formed at an angle of 45 degrees, the seismic energy acting in the vertical and horizontal directions can be absorbed, buffered and damped through compression and shear elasticity of the rubber.

Next, a vibration and vibration protection system having the above-described isolation device 100 will be described below. FIG. 7 is a view showing an example of a vibration and vibration protection system having a vibration isolation device 100 according to the present invention.

1 and 7, the vibration and vibration protection system includes a control module 300, a server 500 and an administrator terminal 600 disposed in the electric structure 200, and includes a control module 300, (500) and the administrator terminal (600) are connected through a network.

The control module 300 may be installed on the bottom surface or side wall of the electrical structure 200 and the control module 300 may be formed to communicate with the server 500 and the administrator terminal 600 via the network 400 do.

Specifically, the control module 300 detects external devices such as a communication unit 310 that communicates with the server 500 and the administrator terminal 600, a slope of the electric structure due to external vibration and vibration, A shutoff unit 340 for turning off the switchboard equipment in the electrical structure when the earthquake-induced vibration sensor 320 for detecting the earthquake-induced vibration, the earthquake-induced vibration sensor 320 for detecting the earthquake- And a processor 330 for controlling the operation of the sensor.

The processor 330 receives the earthquake-induced vibration value measured from the earthquake-motion sensor 320. When it is determined that the received earthquake-induced vibration value corresponds to a predetermined earthquake-induced vibration level (for example, the intensity 7) The power supply to the electrical structure equipment is shut off or the power supply to the electrical structure equipment is shut off and the power supply to the communication unit 310 is interrupted. To the server 550 or the administrator terminal 600 via the network.

The processor 330 is also configured to transmit the earthquake motion measurements received from the sensor 320 to the server 500 at predetermined periodic intervals or in real time, And a storage element (memory) for storing a value.

The server 500 analyzes the seismic time history seismic waveform from the control module 320 at real time or at predetermined time intervals. For example, a time history waveform analysis and a modified merkory magnitude and scale analysis (PGA EPA) Can be used.

In addition, the server 500 is configured to evaluate the soundness according to the magnitude of earthquake and vibration progression, and may be configured to determine an alarm setting according to the degree of magnitude. For example,

MMI magnitude 1 to 5: normal operation

MMI magnitude 5 to 6: Alarm (warning light)

MMI Progress 7: Emergency Power Generation

MMI Progress 8: Shutdown of electrical structure

Lt; / RTI >

In the above-described embodiment, the processor 330 of the control module 300 is configured to block the operation of the power distribution facility when the predetermined condition is satisfied. However, the present invention is not limited to this, It may be configured to analyze the earthquake vibration waveform received from the module 300 and instruct the control modules 300 to block all the control modules 300 in response to the analysis.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: Isolation device 110: Lower fixed plate
111: mounting hole 120: damping portion
130: tension rod 131: upper end fixing part
132: lower fixing part 140: upper fixing plate
141: engaging groove 142: fixing screw
150,151: Mounting bolt 200: Electrical structure

Claims (9)

A seismic isolation device installed between the ground and the electrical structure for absorbing and dissipating earthquake motions when an earthquake occurs; An electrical structure connected to the isolation device and having a control module; And a server and an administrator terminal connected to the control module through a network,
In the seismic isolation device,
A lower fixing plate fixed to the ground; A damping portion protruding from the lower fixing plate and having elasticity to absorb the earth vibration; An upper fixing plate fixed to the damping portion and detachably coupled to the structure; And a tension rod coupled to the upper and lower fixed plates to absorb and dissipate earthquakes when the relative displacement occurs,
The damping portion is formed such that the lower end portion of the damping portion is wider than the upper end portion of the damping portion, the outer peripheral surface connecting the upper end portion and the lower end portion is formed to be inclined at an angle of 45 degrees,
The tension rod is a wire rope formed by twisting a plurality of wires,
Each wire of the tension rod has a lead at its center and its lead is covered with stainless steel,
The control module includes:
A communication unit for communicating with an external server and an administrator terminal; A vibration and vibration sensor for detecting inclination of an electric structure due to vibration and vibration; A blocking portion for blocking electrical equipment provided in the electrical structure; And a processor for determining on and off operations of the blocking unit based on commands of the server,
The server evaluates the earthquake motion magnitude grade based on the value of the earthquake motion sensor received from the communication section of the control module,
In the first step, the electric structure is normally operated,
In the second step, an alarm process is further performed,
In the third stage, the emergency development process is further carried out,
And instructing the processor of the control module to perform a further shutdown of the electrical structure in a fourth step.
The method according to claim 1,
Wherein the tension rod is bent and protruded outward between the upper fixing plate and the lower fixing plate.
The method according to claim 1,
The length l of the tension rod is given by the following formula

Lt; / RTI >
Where H is the installation height of the seismic isolation device, and L is the movement restricting distance for preventing the electrical structure from falling.

delete delete delete delete delete delete

Images