KR101294700B1 - System for managing photovoltaic array - Google Patents

System for managing photovoltaic array Download PDF

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Publication number
KR101294700B1
KR101294700B1 KR20110132797A KR20110132797A KR101294700B1 KR 101294700 B1 KR101294700 B1 KR 101294700B1 KR 20110132797 A KR20110132797 A KR 20110132797A KR 20110132797 A KR20110132797 A KR 20110132797A KR 101294700 B1 KR101294700 B1 KR 101294700B1
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South Korea
Prior art keywords
pressure valve
water
drain pipe
solar array
pump
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KR20110132797A
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Korean (ko)
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KR20130066108A (en
Inventor
김성태
최한식
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한전케이디엔주식회사
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Priority to KR20110132797A priority Critical patent/KR101294700B1/en
Publication of KR20130066108A publication Critical patent/KR20130066108A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/60—Thermal-PV hybrids

Abstract

The present invention relates to a solar array management system for controlling the temperature of the solar array using the cooling water or hot water so that the solar array can maintain the temperature optimum for power generation efficiency.
A solar array management system according to an embodiment of the present invention, the solar array management system for managing the temperature of the solar array, a water tank for storing water containing cooling water or hot water; A temperature sensor measuring a temperature of the solar array; A drain pipe disposed on a rear surface or a front surface of the solar array and having a diaphragm structure penetrated therein; An input pressure valve having one side connected to one end of the drain pipe; An output pressure valve having one side connected to the other end of the drain pipe; A first pump installed between the water tank and the other side of the input pressure valve to supply water stored in the water tank to the input pressure valve; A second pump installed at the other side of the output pressure valve and including a function of discharging water in the drain pipe to the outside; And an operation system for operating the water tank, the temperature sensor, the drain pipe, the input pressure valve, the output pressure valve, the first pump, and the second pump.

Description

Solar Array Management System {SYSTEM FOR MANAGING PHOTOVOLTAIC ARRAY}

The present invention relates to a system for managing a solar array, and more particularly, to a solar array management system that enables the solar array to maintain a temperature that is optimal for power generation efficiency.

Recently, efforts are being actively made to develop and utilize renewable energy in order to secure energy resources and overcome global warming.

In particular, since solar energy uses sunlight as an energy source, there is no fear of depletion of energy sources, no additional cost incurred by using raw materials, and no problem of carbon dioxide emission due to energy generation. One of the most widely used renewable energy.

In general, a photovoltaic power generation system includes a photovoltaic array in which a plurality of photovoltaic modules are connected in parallel.

Since the solar array is a device in which sunlight is directly incident, heat is generated in the process of condensing or energizing sunlight. In particular, in the summer, more heat is generated to increase the temperature.

In general, the solar array has its power generation efficiency is lowered when the temperature rises, for example, in the case of a silicon solar cell, the output decrease of about 0.5% when 1 ℃ rise above 25 ℃.

As a result, the generation efficiency is the highest in a temperature environment such as spring or autumn, rather than in summer, when the amount of insolation is high and the light collection amount is maximum.

Accordingly, an object of the present invention is to provide a solar array management system for controlling the temperature of the solar array using the cooling water or hot water so that the solar array can maintain the optimal temperature for power generation efficiency.

In addition, another object of the present invention is to provide a solar array management system that can be attached to the surface of the solar array to prevent the deterioration of the power generation efficiency by cleaning the foreign matter such as dust or snow, which reduces the power generation efficiency.

In order to achieve the above object, the solar array management system according to an embodiment of the present invention, the solar array management system for managing the temperature of the solar array, a water tank in which water containing cooling water or hot water is stored; A temperature sensor measuring a temperature of the solar array; A drain pipe disposed on a rear surface or a front surface of the solar array and having a diaphragm structure penetrated therein; An input pressure valve having one side connected to one end of the drain pipe; An output pressure valve having one side connected to the other end of the drain pipe; A first pump installed between the water tank and the other side of the input pressure valve to supply water stored in the water tank to the input pressure valve; A second pump installed at the other side of the output pressure valve and including a function of discharging water in the drain pipe to the outside; And an operation system for operating the water tank, the temperature sensor, the drain pipe, the input pressure valve, the output pressure valve, the first pump, and the second pump.

The operating system operates the first pump when the temperature data from the temperature sensor exceeds a predetermined reference temperature range, opens the input pressure valve, closes the output pressure valve, and Ensure coolant is stored in the water tank.

The operating system operates the first pump when the temperature data from the temperature sensor is below a predetermined reference temperature range, opens the input pressure valve, closes the output pressure valve, and connects the water tank to the drain pipe. Make sure that hot water stored in is supplied.

Each of the input pressure valve and the output pressure valve includes a pressure sensor to measure the water pressure inside the drain pipe, and the operating system measures the first pump when the measured water pressure inside the drain pipe is equal to or greater than a predetermined reference pressure value. Stops its operation, and closes the input pressure valve.

The operating system operates the second pump and opens the output pressure valve when the temperature data from the temperature sensor is included in the reference temperature range, so that the water inside the drain pipe is discharged to the outside.

The solar array management system further includes a cleaning conduit disposed transversely on the top surface of the solar array and including at least one nozzle.

One end of the washing tube is connected to the second pump, the other end of the washing tube is closed, and the second pump includes a function of supplying water stored in the water tank to the washing tube.

The operating system operates the second pump to supply water stored in the water tank to the cleaning pipe when the generated current data of the solar array provided from the outside is less than a predetermined reference current value.

The solar array management system further includes at least one output valve for discharging water in the drain pipe to the outside.

According to the present invention, a drain pipe is installed in the solar array, and when the temperature of the solar array rises based on a predetermined temperature, the cooling water is supplied to the drain pipe, and when the temperature falls, the hot water is supplied to the drain pipe. By allowing the array to maintain the desired temperature state, the power generation efficiency is maximized and effective.

In addition, according to the present invention, when a foreign matter is attached to the surface of the photovoltaic array to generate a current drop, it is possible to prevent the reduction in power generation efficiency because the washing water is supplied to clean the surface of the photovoltaic array.

1 is a view showing a solar array management system according to an embodiment of the present invention,
2 is a flowchart illustrating a temperature control process of a solar array management system according to an embodiment of the present invention;
3 is a view showing a washing configuration of the solar array management system according to an embodiment of the present invention, and
4 is a flowchart illustrating a cleaning process of a solar array management system according to an exemplary embodiment of the present invention.

Other objects and advantages of the present invention will become apparent from the following description of preferred embodiments of the present invention with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 4.

Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

The present invention is characterized by providing a drain pipe to the solar array, by supplying cooling water or hot water to the drain pipe, so that the temperature of the solar array can be adjusted to a state suitable for power generation efficiency.

1 is a view showing a solar array management system according to an embodiment of the present invention.

1, a solar array management system according to an exemplary embodiment of the present invention includes a temperature sensor 110, a drain pipe 120, an input pressure valve 130, a first pump 140, a water tank 150, And an output pressure valve 160, a second pump 170, and an operating system 200.

The temperature sensor 110 is attached to the solar array 10 or installed in the vicinity of the solar array 10 so as to measure the temperature of the solar array 10.

Drainage pipe 120 is disposed over the back or the front of the inside of the solar array 10, the inside is penetrated so that the intake and drainage can be made, the diaphragm type structure to facilitate the diffusion of water in the drainage pipe 120 Has That is, due to the diaphragm type structure, the water is uniformly and quickly diffused in the drain pipe 120 by a kind of capillary phenomenon, so that the temperature of the solar array 10 may be quickly adjusted without a difference in position.

Meanwhile, an input pressure valve 130 is installed at one end of the drain pipe 120, and an output pressure valve 160 is installed at the other end. The input pressure valve 130 and the output pressure valve 160 are configured to control the water supply to the inside of the drain pipe 120 through the opening and closing operation, and to measure the water pressure inside the drain pipe 120 including a pressure sensor. Play a role.

The water tank 150 is a storage space in which the water supplied to the drain pipe 120 is stored. According to an embodiment, since the coolant or hot water is changed immediately and does not need to be supplied, in the summer, the coolant, In winter, it may be configured to store either hot water, that is, cooling water or hot water, and in another embodiment, may include a cooling water tank and a hot water tank.

In addition, the water tank 150 may further include a separate heating device such as a heating coil to heat the stored water.

The first pump 140 is disposed between the water tank 150 and the input pressure valve 130 to perform a pumping function to be supplied to the drain pipe 120 stored in the water tank 150, the first pump 140 is operated When the input pressure valve 130 is opened, the water stored in the water tank 150 is input into the drain pipe 120.

The second pump 170 is disposed on the output side of the output pressure valve 160 to perform a pumping function so that the water inside the drain pipe 120 is discharged to the outside when the output pressure valve 160 is opened.

In this case, the second pump 170 may be connected to the water tank 150 so that the water discharged from the drain pipe 120 is recycled.

The operating system 200 monitors and controls the operation of each component in the management system.

Specifically, by receiving temperature data from the temperature sensor 110 to monitor the temperature state of the solar array 10, and to control the opening and closing of the input pressure valve 130 and output pressure valve 160, as well as the input pressure And it receives the output pressure information to monitor the water pressure in the drain pipe 120, and controls the operation of the first and second pumps (140, 170). In addition, when the water tank 150 includes a heating device, it is possible to control the operation of the heating device.

In addition, the operating system 200 determines whether the temperature is adjusted through the temperature monitoring, that is, whether the cooling water or hot water is supplied, and whether the water supply is stopped by monitoring the water pressure in the drain pipe 120.

The operation system 200 may be directly connected to each component in the management system to enable data reception and direct control, or may be connected to each component in the management system through a communication network to receive data or control operation through wired or wireless communication. You may. For example, the operating system 200 may perform MODBUS TCP / IP communication with each component in the management system. At this time, each configuration in the management system should be provided with a control unit for controlling the configuration through a communication unit and communication data for performing communication with the operating system 200, of course.

On the other hand, the operating system 200 may be configured in the form of a server, a computer, and the like, and accordingly may be driven by a user.

In one embodiment, the solar array management system of the present invention may further include at least one output valve 180.

The output valve 180 is installed at the other end of the drain pipe 120 so that the water inside the drain pipe 120 can be discharged more quickly when opened, and likewise, opening and closing is controlled by the operation system 200.

2 is a flowchart illustrating an operation process of the solar array management system having the above-described configuration.

That is, the process of adjusting the temperature of the solar array 10, the operating system 200 monitors the temperature data measured by the temperature sensor 110 (S11), the temperature of the solar array 10 is It is determined whether or not out of a predetermined reference temperature range (S12).

In the present invention, since the temperature range optimized for the power generation efficiency of the solar array 10 may be changed according to the installation environment and the specification of the solar array 10, the optimum temperature range is less than A, assuming that the optimum temperature range is A or more and B or less. In the case, it is necessary to raise the temperature of the solar array 10, and when it exceeds B, it is necessary to lower the temperature. That is, when the temperature of the solar array 10 is less than the A value or exceeds the B value (S12-Y) as a result of the temperature monitoring, the operation system 200 determines that it is time to supply hot water and cooling water, respectively, and the first pump By operating the 140 and opening the input pressure valve 130, the water stored in the water tank 150 is supplied to the drain pipe 120 (S13).

At this time, the output pressure valve 160 should be kept closed, and when the output pressure valve 160 is in the open state, it is closed by the operating system 200.

On the other hand, in this step, the time to increase the temperature, the time to lower the temperature is generally limited to winter and summer, respectively, so as described through FIG. 1 the hot water stored in the water tank 150 according to the season, Cold water may be supplied to the drain pipe 120, and when hot water and cooling water are separately stored in the water tank 150, hot water or cooling water is supplied under the control of the operating system 200 according to the temperature monitoring result.

When water is supplied to the drain pipe 120, the input pressure valve 130 and the output pressure valve 160 monitor the pressure inside the drain pipe 120, that is, the water pressure (S14). If the reference pressure value of (C) or more (S15-Y) of the operating system 200 determines that the water is sufficiently filled in the drain pipe 120, the operation of the first pump 140 is stopped, the input pressure valve By closing the 130, the water supply to the inside of the drain pipe 120 is stopped (S16).

Accordingly, since the drain pipe 120 maintains the storage state of the cooling water or the hot water, the temperature of the solar array 10 may be adjusted according to the temperature of the water in the drain pipe 120.

That is, when the temperature of the photovoltaic array 10 is lower than the reference value, the hot water inside the drain pipe 120 increases the temperature of the photovoltaic array 10, and when the temperature of the photovoltaic array 10 is higher than the reference value, the coolant inside the drain pipe 120 By lowering the temperature of the light array 10, the solar array 10 can maintain a temperature state that is optimal for power generation efficiency.

Thereafter, the operating system 200 continuously monitors whether the temperature of the solar array 10 falls within a reference range (S17), and if it is determined that the temperature of the solar array 10 is adjusted within the reference range (S17-). Y), by opening the output pressure valve 160, by operating the second pump 170 (S18) to allow the water in the drain pipe 120 to be discharged to the outside.

The solar array management system of the present invention may further include a cleaning configuration for cleaning foreign matter on the surface of the solar array 10.

Since the solar array 10 is exposed to the outside to face the sun, foreign matters such as dust or snow are easily attached, and these foreign matters cause a decrease in output of the unit modules constituting the solar array 10. As a result, the power generation efficiency of the entire solar array 10 is lowered.

Therefore, in the present invention, the surface of the photovoltaic array 10 is washed to prevent a decrease in power generation efficiency, specifically, the configuration of FIG. 3.

Referring to FIG. 3, the solar array management system according to the embodiment of the present invention further includes a cleaning pipe 190.

The cleaning pipe 190 is disposed in the transverse direction on the upper surface of the solar array 10, one end is connected to the second pump 170.

At least one injection hole 191 is formed in the cleaning pipe 190.

Preferably, the other end of the cleaning pipe 190 is sealed, and the injection hole 191 is formed in the lower direction of the solar array 10 and is arranged at regular intervals.

As described above with reference to FIGS. 1 and 2, the second pump 170 is used for discharging water inside the drain pipe 120, and when the solar array management system of the present invention is operated in a washing mode. It performs the function of pumping the water stored in the water tank 150 to be supplied to the washing pipe 190.

4 is a flowchart illustrating a washing process.

Prior to the description of the cleaning process, when water is directly sprayed onto the surface of the solar array 10, there is a problem in that the output decreases due to the refractive index of the water. It is preferably done in a suspended state.

Basically, the solar power system is equipped with a facility to monitor the generated power, which can monitor the current of the production power.

The operating system 200 receives current data from the outside, specifically, the monitoring facility of the solar power generation system as described above, and monitors the current of the electric power generated through the solar array 10 (S21).

As mentioned above, since the foreign matter on the surface of the solar array 10 causes a decrease in output, when a large number of foreign matter is attached to the surface of the solar array 10, a current drop occurs in the solar power generation system.

Therefore, the operating system 200 examines whether or not the current falls below the predetermined reference current value (D) (S22), and if the current is less than the reference current value (D) (S22-Y), foreign material cleaning is required. By determining that, by operating the second pump 170 (S23), the water in the water tank 150 is to be supplied to the washing pipe 190 as the washing water.

As such, the water supplied to the cleaning pipe 190 is sprayed onto the surface of the solar array 10 through the injection hole 191 to clean the foreign matter attached to the surface of the solar array 10.

In this case, the operating system 200 may select the water supplied to the washing pipe 190 through the second pump 170 from the hot water or the cooling water according to the temperature environment, or the hot water stored in the water tank 150 according to the season. Cooling water can also be used as wash water.

Accordingly, when seasonal foreign matter such as snow or ice is attached to the surface of the solar array 10, it is effective to wash the sea ice using hot water.

On the other hand, in setting the washing time, the operating system 200 may set the washing time by setting the number of pumping of the second pump 170, or the washing water supply time, by monitoring the current data continuously supplied from the outside When the current drop exceeds the reference current value (D), the cleaning may be stopped.

Such a photovoltaic array management system of the present invention may be formed independently of the photovoltaic power generation system, may be provided as an internal configuration of the photovoltaic power generation system, and may be modified and applied in any form if the function is maintained. Do.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

10: solar array 110: temperature sensor
120: drain pipe 130: input pressure valve
140: first pump 150: water tank
160: output pressure valve 170: second pump
180: output valve 190: cleaning pipe
191: injection hole 200: operating system

Claims (9)

In the solar array management system for managing the temperature of the solar array,
A water tank in which water including cooling water or hot water is stored;
A temperature sensor measuring a temperature of the solar array;
A drain pipe disposed on a rear surface or a front surface of the solar array and having a diaphragm structure penetrated therein;
An input pressure valve having one side connected to one end of the drain pipe;
An output pressure valve having one side connected to the other end of the drain pipe;
A first pump installed between the water tank and the other side of the input pressure valve to supply water stored in the water tank to the input pressure valve;
A second pump installed at the other side of the output pressure valve and including a function of discharging water in the drain pipe to the outside;
An operating system for operating the water tank, the temperature sensor, the drain pipe, the input pressure valve, the output pressure valve, the first pump, and the second pump; And
The cleaning conduit disposed on the top surface of the photovoltaic array in a transverse direction and including at least one injection hole.
/ RTI >
One end of the washing pipe is connected to the second pump, and the other end is closed.
And the second pump includes a function of supplying water stored in the water tank to the washing pipe.
The method of claim 1,
The operating system,
If the temperature data from the temperature sensor exceeds a predetermined reference temperature range,
Operating the first pump, opening the input pressure valve, closing the output pressure valve, such that the coolant stored in the water tank is supplied to the drain pipe.
The method of claim 1,
The operating system,
If the temperature data from the temperature sensor is below a predetermined reference temperature range,
Operating the first pump, opening the input pressure valve and closing the output pressure valve to supply hot water stored in the water tank to the drain pipe.
The method according to claim 2 or 3,
Each of the input pressure valve and the output pressure valve includes a pressure sensor to measure the water pressure inside the drain pipe,
And the operating system stops the operation of the first pump and closes the input pressure valve when the measured water pressure in the drain pipe is equal to or greater than a predetermined reference pressure value.
5. The method of claim 4,
The operating system,
When the temperature data from the temperature sensor is included in the reference temperature range,
Operating the second pump and opening the output pressure valve so that the water inside the drain pipe is discharged to the outside.
delete delete The method of claim 1,
The operating system,
When the generated current data of the solar array provided from the outside is less than a predetermined reference current value,
Operating the second pump to supply the water stored in the water tank to the cleaning pipe.
The method of claim 1,
And at least one output valve for discharging water in the drain pipe to the outside.
KR20110132797A 2011-12-12 2011-12-12 System for managing photovoltaic array KR101294700B1 (en)

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US10472255B2 (en) 2013-10-01 2019-11-12 FlowCore Systems, LLC Fluid metering system
WO2015050993A1 (en) * 2013-10-01 2015-04-09 FlowCore Systems, LLC Fluid metering system
KR102631995B1 (en) 2017-12-27 2024-01-30 양경옥 Apparatus of evaluating fire risk by using IoT(internet of things) in a construction site
US10895205B1 (en) 2019-10-08 2021-01-19 FlowCore Systems, LLC Multi-port injection system
US10884437B1 (en) 2019-10-22 2021-01-05 FlowCore Systems, LLC Continuous fluid metering system

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Publication number Priority date Publication date Assignee Title
KR20090115624A (en) * 2008-05-02 2009-11-05 유흥수 Control system of the maintenance facility for the solar photovoltaic power
KR20110052163A (en) * 2009-11-12 2011-05-18 (주)하이레벤 System and method of controlling solar cell facility maintenance device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090115624A (en) * 2008-05-02 2009-11-05 유흥수 Control system of the maintenance facility for the solar photovoltaic power
KR20110052163A (en) * 2009-11-12 2011-05-18 (주)하이레벤 System and method of controlling solar cell facility maintenance device

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