KR102269570B1 - Solar power generating system having a function of seismic isolation - Google Patents

Abstract

The present invention relates to a solar power generation system having an anti-vibration function, wherein an anti-vibration device is installed between an electric power facility including a power generation module, a connection board or an inverter and a base part, and is capable of protecting the electric power facility against horizontal and vertical vibration caused by an earthquake. To this end, the solar power generation system having an anti-vibration function in accordance with the present invention comprises an anti-vibration device installed between an electric power facility including a power generation module, a connection board or an inverter and a base part. The anti-vibration device comprises: a lower plate fixed and installed on the base part; a rolling plate arranged on an upper side of the lower plate; a rolling steel ball installed between the lower plate and the rolling plate and configured to perform rolling motion in accordance with left and right vibration; an upper plate disposed on an upper side of the rolling plate; and a vibration damping part installed between the rolling plate and the upper plate and configured to reduce vibration.

Description

Solar power generation system with seismic isolation function {SOLAR POWER GENERATING SYSTEM HAVING A FUNCTION OF SEISMIC ISOLATION}

The present invention relates to a photovoltaic power generation system to which a seismic isolation function is applied, and more particularly, is installed between a power facility such as a power generation module, a connection board, or an inverter of a photovoltaic power system and a base, and horizontal and vertical generated by an earthquake, etc. It relates to a photovoltaic power generation system to which a seismic isolation function capable of protecting the power facility from vibration is applied.

The photovoltaic power generation system converts light energy into electrical energy, and includes a solar cell module supplying DC power corresponding to received sunlight, a solar cell array connected in series, and many wirings between the solar cell array and the inverter. It is composed of a photovoltaic junction panel that facilitates the wiring and performs various protection functions, an inverter that converts DC power generated by the solar cell array into AC power, and a load that consumes the generated power.

Among such photovoltaic power generation systems, the connection panel is a device for collecting DC current generated from a plurality of solar cell modules and outputting it to the inverter, and the connection panel includes a DC output switchgear, a lightning arrester, a reverse flow prevention device, a terminal block, and a fuse ( or switch) and the like, and a switch for output terminal for insulation resistance measurement or periodic short-circuit current check may be installed.

As a technology for preventing damage caused by vibrations such as earthquakes, an earthquake-resistant switchgear has been disclosed in Korean Patent Publication No. 10-1498270.

The technology is coupled to the lower surface of the switchgear, the upper plate is provided with a flow hole on the center; a lower plate fixedly installed on the bottom surface; a support block formed between the upper plate and the lower plate and fixedly installed on the upper portion of the lower plate; a plurality of horizontal anti-vibration means for interconnecting the support block and the upper plate in a vertical direction; a vertical anti-vibration means provided in a support block groove formed on the center of the support block and a ball support base formed on the upper portion of the vertical anti-vibration means and capable of vertical movement with respect to a force acting vertically; a support bolt having a rotary ball rotatably seated in a ball support groove formed in the ball support base at a lower portion and inducing rotation of the switchboard according to vibration; and a support nut fastened to the support bolt while penetrating through the flow hole and the switchgear hole is configured at the lower portion.

However, in the above technology, the support bolt penetrates the lower plate of the switchgear and is configured so that the support nut is fastened to the exposed portion. There is a problem of restricting the movement of the upper plate as it is varied by contact.

In addition, as a photovoltaic power generation system having a seismic isolation structure, a photovoltaic power generation system to which a seismic isolation structure is applied is disclosed in Korean Patent Registration No.

The technology protrudes while forming a separation from the flange and includes an upper connector including a protruding end in which a slide hole forming a separation is formed; a lower connector including a base fixed to the ground and a base plate having a control end protruding while forming a spaced apart from each protruding end outward from the upper surface of the base; a guide bar having both ends fixed to the control end while being inserted into the slide hole of the protruding end; one or more springs connecting the protruding end and the control end; It is interposed between the protruding end and the guide bar and is configured to include a ball-shaped bearing rotating in contact with the flange and the support plate.

In the above technique, the bearing is moved in a rolling motion between the protruding end and the guide bar to reduce left and right vibrations, but there is a problem in that vertical vibrations cannot be reduced.

Registered Patent Publication No. 10-1498270 (2015. 02. 25.) Registered Patent Publication No. 10-2001860 (July 15, 2019)

The present invention has been devised to solve the above problems, and the problem to be solved in the present invention is to be installed between a power facility such as a power generation module, a connection board, or an inverter of a photovoltaic power generation system and a base and a horizontal surface generated by an earthquake, etc. And to provide a solar power generation system to which a seismic isolation function that can protect power facilities from vertical vibration is applied.

Another object of the present invention is to provide a photovoltaic power generation system to which a seismic isolation function is applied, which has a simple structure, excellent durability, and is easy to install, thereby reducing maintenance costs.

In order to solve the above problems, the solar power generation system to which the seismic isolation function according to the present invention is applied includes a seismic isolator installed between a power facility including a power generation module, a connection panel, or an inverter and a base, and the seismic isolator includes a lower plate fixedly installed to the base; a rolling plate disposed on the upper side of the lower plate; a rolling steel ball installed between the lower plate and the rolling plate to perform rolling motion according to left and right vibrations; an upper plate disposed on the upper side of the rolling plate; and a vibration damping part installed between the rolling plate and the upper plate to reduce vibration.

Here, the vibration damping unit is characterized in that it attenuates the vertical and horizontal vibrations applied from the rolling plate.

In addition, the lower plate is configured with a rolling portion having a round groove recessed to the lower side, and the rolling steel ball is configured to roll in the round groove by vibration.

In addition, the vibration damping unit is installed on the upper portion of the rolling plate, the support plate having a support rod protruding toward the upper side; a rotary sphere rotatably installed in a spherical groove formed on the lower surface of the upper plate, and configured with a connecting rod toward the lower side; and an elastic body installed between the support rod of the support plate and the connection rod of the rotary sphere.

In addition, a holding plate for preventing separation of the rotary sphere may be further installed on the lower surface of the upper plate.

According to the present invention, it is possible to simultaneously deal with vertical and horizontal vibrations of the base, and has a simple structure, so maintenance is easy.

In addition, for fine vibration, the rolling steel ball reduces vibration, and for strong vibration, the vibration damping unit operates to reduce the vibration transmitted from the base, thereby safely protecting power facilities.

1 is a schematic configuration diagram of a solar power generation system to which a seismic isolation function according to the present invention is applied;
2 is a view of a state in which the seismic isolator is configured in a connection panel in the solar power generation system to which the seismic isolation function according to the present invention is applied;
3 is a perspective view of a seismic isolator applied to a connection panel in a solar power generation system to which a seismic isolation function according to the present invention is applied;
4 is an exploded perspective view of the seismic isolator of FIG. 3;
5 is a cross-sectional view taken along line A-A' of FIG. 3;
6 and 7 are each a cross-sectional view showing the operating state of the seismic isolator applied to the solar power generation system to which the seismic isolating function according to the present invention is applied.

Next, a preferred embodiment of the solar power generation system to which the seismic isolation function according to the present invention is applied will be described in detail with reference to the drawings.

Hereinafter, the same reference numerals are used for technical elements having the same function, and repeated detailed descriptions are omitted to avoid overlapping descriptions.

In addition, the examples described below are illustratively shown in order to effectively show the preferred embodiments of the present invention, and should not be construed to limit the scope of the present invention.

The present invention relates to a photovoltaic power generation system to which a seismic isolation function is applied, and more particularly, is installed between a power facility such as a power generation module, a connection board, or an inverter of a photovoltaic power system and a base, and horizontal and vertical generated by an earthquake, etc. It relates to a photovoltaic power generation system to which a seismic isolation function capable of protecting the power facility from vibration is applied.

1 is a view showing a schematic configuration of a photovoltaic power generation system to which the seismic isolation function according to the present invention is applied.

1, the photovoltaic power generation system to which the seismic isolation function according to the present invention is applied is configured to include a photovoltaic power module 10, a connecting board 20 and a power conversion device 30, such as an inverter, A seismic isolator 40 for preventing the vibration of the base from being transmitted to the upper part is installed between the lower part and the base part of the photovoltaic power generation module 10 , the connection panel 20 , and the power converter 30 .

The photovoltaic power generation module 10 generates electric power by using light energy of the sun, and is composed of a plurality of photovoltaic arrays including photovoltaic modules.

Power produced and output from the solar power module 10 is supplied to the connection panel 20 .

The connection panel 20 is located between the plurality of solar arrays and the power conversion unit 30, is respectively connected to the outputs of the plurality of solar arrays, and collects the power produced by each solar array to convert the power forward to (30).

Although not shown in the drawing, the connection panel 20 includes a detection unit that detects partial discharge generated inside the connection panel 20, a determination unit that determines whether partial discharge occurs based on the information detected by the detection unit, and the According to the determination result of the determination unit, a fire extinguishing unit for suppressing the fire of the connection panel 20 may be configured.

In addition, the connection panel 20 may be configured in connection with a monitoring system (not shown in the drawing) of a remote location by measuring the output power of each of the plurality of solar arrays connected thereto, and transmitting the measured output power to a remote location.

The power conversion unit 30 converts the DC power of the plurality of photovoltaic arrays received from the connection panel 20 into AC power (AC), and the converted AC output is connected to the switchboard to the power system through the distribution system. transmitted to or supplied to the load.

2 is a view showing a state in which the seismic isolator is configured in the connection panel in the solar power generation system to which the seismic isolation function according to the present invention is applied.

Referring to FIG. 2 , the seismic isolator 40 is installed between the base part B and the connection panel 20 to reduce the vibration generated in the base part B and transmit it to the connection panel 20 .

3 is a perspective view of a seismic isolator applied to a connection panel in a photovoltaic power generation system to which a seismic isolating function according to the present invention is applied, FIG. 4 is an exploded perspective view of the seismic isolator of FIG. 3, and FIG. 5 is A-A of FIG. ' is a cross-sectional view of

3 to 5, in the photovoltaic power generation system to which the seismic isolation function according to the present invention is applied, the seismic isolator 40 applied to the connection panel is installed between the power facility and the base to attenuate vibrations generated in the base, It is configured to include a lower plate 100 , a rolling plate 200 , a rolling steel ball 300 , an upper plate 400 and a vibration damping unit 500 .

The lower plate 100 is fixedly installed on the base, and includes a lower plate 110 and a rolling portion 120 protruding from the lower plate.

At this time, the lower plate 110 is fixed to the base by using an anchor or the like, and the rolling portion 120 is formed with a round groove 121 recessed to the lower side.

As the round groove 121 progresses toward the center, the round groove 121 has a structure that is relatively deeper than the outer portion.

The rolling plate 200 is disposed on the upper side of the lower plate 100 .

A through hole 210 communicating vertically is formed in the center of the rolling plate 200 , and a rolling steel ball 300 to be described later is introduced into the through hole 210 and installed.

The rolling steel ball 300 is installed between the lower plate 100 and the rolling plate 200 to perform a rolling motion according to left and right vibration, and performs a rolling motion according to the vibration of the base, more specifically, the left and right vibration of the base Thus, the shaking of the electric power facility installed on the upper part of the upper plate 400 is minimized.

Here, the rolling steel ball 300 is installed by being drawn into the through hole 210 that communicates up and down of the rolling plate 200 . At this time, a retainer (not shown) may be installed between the inner diameter of the through hole 210 and the rolling steel ball 300 in order to prevent separation of the rolling steel ball 300 that is installed in the through hole 210. have.

The upper plate 400 is disposed on the upper side of the rolling plate 200 to perform a function of supporting a power facility including a power generation module, a connection board or an inverter.

Here, the upper plate 400 and the power facility may be coupled through an upper coupling member 401 (eg, a nut and a bolt, etc.).

A spherical groove 410 is formed on the lower surface of the upper plate 400 .

The vibration damping unit 500 is installed between the rolling plate 200 and the upper plate 400 to reduce vibration, and attenuates vertical and horizontal vibrations applied from the rolling plate 200 . make it

As such, the vibration damping unit 500 is configured to include a support plate 510 , a rotary sphere 520 , an elastic body 530 , and a holding plate 540 .

The support plate 510 is installed on the upper portion of the rolling plate 200 and closes the upper portion of the through hole 210 of the rolling plate 200 .

A support rod 511 protruding upwardly is formed in the center of the support plate 510 .

A rolling steel ball 300 is inserted and installed in the through hole 210 , and the lower portion of the support plate 510 supports the upper portion of the installed rolling steel ball 300 .

Here, the upper portion of the rolling steel ball 300 and the lower portion of the support plate 510 are advantageously in point contact for smooth rolling motion of the rolling steel ball 300 . That is, in the installed state, the upper side of the rolling steel ball 300 is maintained in point contact with the lower portion of the support plate 510 , and the side surface of the rolling steel ball 300 is lined with the inner surface of the through hole 210 . will remain in contact. Accordingly, a retainer (reference numeral not shown) is installed between the side surface of the rolling steel ball 300 and the inner surface of the through hole 210 so that the rolling motion can be smoothly maintained.

The rotary sphere 520 is rotatably installed in the spherical groove 410 formed on the lower surface of the upper plate 400 , and a connecting rod 521 is formed on the lower side.

The rotary sphere 520 is rotated in the spherical groove 410 with respect to the vibration transmitted from the lower side, for example, left and right vibration, and attenuates the vibration (left and right vibration) transmitted to the upper side.

The elastic body 530 is installed between the support rod 511 of the support plate 510 and the connection rod 521 of the rotary sphere 520, and absorbs vertical vibrations to attenuate vibrations transmitted to the upper side.

The holding plate 540 is installed on the lower surface of the upper plate 400 to prevent separation of the rotary sphere 520 .

That is, the holding plate 540 has a hole in the center through which the connecting rod 521 of the rotating sphere 520 passes, and supports a lower portion of the rotating sphere 520 from the bottom to the upper side to support the rotating sphere 520 . ) to prevent escape.

6 and 7 are views showing cross-sectional views of the operating state of the seismic isolator applied to the photovoltaic power generation system to which the seismic isolating function according to the present invention is applied, respectively.

Referring to the accompanying FIG. 6 , it shows the operation state of the seismic isolator when a weak earthquake (intensity 2 to 3) occurs. When a weak earthquake occurs, the vibration (horizontal vibration) of the earthquake is transmitted to the lower plate 100, and the lower plate 100 ) is attenuated by the rolling motion of the rolling steel ball 300, and the electric power facility supported on the upper part of the upper plate 400 is protected from vibration.

In addition, even when the transmitted vibration is vertical vibration, it is attenuated by the elastic body 530 of the vibration damping unit 500 so that the electric power facility supported on the upper part of the upper plate 400 is protected from vibration.

That is, when horizontal and vertical vibrations are transmitted to the lower plate 100 according to the occurrence of an earthquake with a seismic intensity of 3 or less, the rolling steel ball 300 in the process of shaking the lower plate 100 is a round groove of the lower plate 100 ( 121) and moves to the outside of the round groove 121. At this time, the round groove 121 of the lower plate 100 rolls along the curved surface of the rolling steel ball 300, and the lower plate ( The rolling plate 200 positioned with the rolling steel ball 300 in between 100) is horizontally caused by earthquake vibration in the process of moving to the outside of the round groove 121 of the lower plate 100 together with the rolling steel ball 300. And the shaking in the vertical direction is transmitted to a minimum.

Referring to the accompanying FIG. 7, it shows the operation state of the seismic isolator when a strong earthquake (intensity 4 ~ seismic intensity 5) or heat earthquake (intensity 6) occurs, and vibration (horizontal vibration and vertical vibration) according to the occurrence of an earthquake of seismic intensity 5 ~ seismic intensity 6 The vibration transmitted to the lower plate 100 and transmitted to the lower plate 100 is first attenuated by the rolling motion of the rolling steel ball 300 and transmitted to the upper plate 400 .

At this time, the rolling steel ball 300 is the round groove 121 of the lower plate 100 is rolled along the curved surface of the rolling steel ball 300, and the rolling steel ball 300 on the lower plate 100 is sandwiched therebetween. When the rolling plate 200 is positioned to reach a limit while moving to the outside of the round groove 121 of the lower plate 100 together with the rolling steel ball 300, the elastic operation (bending) of the elastic body 530 is transmitted. and vibration (horizontal vibration and vertical vibration) is attenuated by the bending of the elastic body 530 , and the upper plate 400 receives minimal horizontal and vertical shaking caused by seismic vibration.

According to the present invention, it is possible to simultaneously deal with vertical and horizontal vibrations of the base, the structure is simple and maintenance is easy, the vibration is reduced by the rolling steel ball for fine vibrations, and the vibration damping unit is operated for strong vibrations Thus, there is an advantage in that the vibration transmitted from the base can be reduced and the power facilities can be safely protected.

In the above, a preferred embodiment of the photovoltaic power generation system to which the seismic isolation function according to the present invention is applied has been described, but the present invention is not limited thereto, and various modifications are made within the scope of the claims, the description of the invention, and the accompanying drawings. It is possible to implement it, and this also falls within the scope of the present invention.

10: power generation module 20: connection panel
30: power converter 40: seismic isolator
100: lower plate 110: lower plate
120: rolling 200: rolling plate
300: steel ball 400: upper plate
500: vibration damping unit 510: support plate
520: rotary sphere 530: elastic body
540: holding plate

Claims (5)

In the photovoltaic power generation system including a seismic isolator (40) installed between a power facility including a power generation module, a connection panel, or an inverter, and a base,
The seismic isolator 40 is
a lower plate 100 fixed to the base;
a rolling plate 200 disposed on the upper side of the lower plate 100 and having a through hole 210 communicating vertically;
Rolling steel ball 300 that is introduced into the through-hole 210 that communicates up and down of the rolling plate 200 and is installed between the lower plate 100 and the rolling plate 200 and performs rolling motion according to left and right vibrations. ;
an upper plate 400 disposed on the upper side of the rolling plate 200; and
a vibration damping unit 500 installed between the rolling plate 200 and the upper plate 400 to reduce vibration;
including,
The lower plate 100 is configured with a rolling portion 120 having a round groove 121 recessed to the lower side,
The rolling steel ball 300 is configured to roll in the round groove 121 by vibration,
The vibration damping unit 500,
It is installed on the upper portion of the rolling plate 200 , finishes the upper portion of the through hole 210 of the rolling plate 200 , and has a support rod 511 protruding toward the upper side to support the upper portion of the rolling steel ball 300 . to the support plate 510;
a rotary sphere 520 rotatably installed in a spherical groove 410 formed on the lower surface of the upper plate 400 and configured with a connecting rod 521 toward the lower side;
an elastic body 530 installed between the support rod 511 of the support plate 510 and the connection rod 521 of the rotary sphere 520; and
In the center of the lower surface of the upper plate 400, a hole through which the connection rod 521 of the rotary sphere 520 passes is supported and a lower portion of the rotary sphere 520 is supported from the lower side to the upper side, and the rotary sphere ( A photovoltaic power generation system to which a seismic isolation function is applied, characterized in that a holding plate 540 to prevent separation of the 520) is installed.
The method according to claim 1,
The vibration damping unit 500,
A solar power generation system to which a seismic isolation function is applied, characterized in that it attenuates vertical and horizontal vibrations applied from the rolling plate 200 .
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