KR101053120B1 - Control system and method of solar power equipment maintenance device - Google Patents

Abstract

The present invention relates to a control system and method for maintaining a photovoltaic power generation facility by spraying water to maintain a photovoltaic power generation facility. The control method of the photovoltaic power generation equipment holding apparatus of the present invention, the water supply valve for opening and closing the water supply to the holding device, determining whether the start time of driving; Driving a pump, opening a valve to supply water and operating a timer when the start time is driven; And blocking the water supply by closing the valve when the timer is equal to or greater than the maximum driving time.

According to the control method of the photovoltaic power plant maintenance apparatus of the present invention, it is possible to efficiently maintain the photovoltaic power generation equipment and to minimize the water consumption by adjusting the water injection amount.

Photovoltaic, power generation equipment, maintenance, time, control, temperature, water pressure, recovery

Description

CONTROL SYSTEM AND METHOD OF PV STORAGE EQUIPMENT MAINTENANCE DEVICE {SYSTEM AND METHOD OF CONTROLLING SOLAR CELL FACILITY MAINTENANCE DEVICE}

The present invention relates to a control system and method of a photovoltaic power generation facility holding apparatus, and more particularly, to a system and a method of controlling a holding device used in a photovoltaic power generation facility in time.

Photovoltaic power generation refers to a power generation method that generates electricity by concentrating sunlight on a solar cell or a photovoltaic module. The photovoltaic module is a collection of solar cells and forms a solar array using a combination of these photovoltaic modules.

Solar arrays include general type, window type, tracking type, hybrid type (parallel with other clean energy generation means) and the like.

The principle of solar power is the use of the photovoltaic effect. Specifically, n-type doping is performed on silicon crystals to form a p-n bonded solar panel. Irradiation with sunlight induces electromotive force, which is called the photovoltaic effect.

Unlike conventional energy sources such as fossil raw materials, sunlight is a clean energy source without the risks of greenhouse gas emissions, noise, and environmental degradation that cause global warming, and there is no fear of exhaustion. In addition, unlike other wind and sea power, solar power plants have the advantage of free installation and low maintenance costs.

However, in the case of the most widely used silicon solar cells, when the temperature of the solar panel rises, the output decrease of 0.5% per 1 ℃ occurs. According to these characteristics, the output of solar power peaks in spring and autumn, not in the summer when the sun is the longest. This increase in temperature is a major cause of lowering the power generation efficiency of photovoltaic power generation.

In addition, such photovoltaic power generation has a drawback that dirt may easily accumulate on solar panels due to weather events such as yellow sand and bad weather. If dirt accumulates on the solar panel, the solar panel has a significantly low light absorption rate, and thus, power generation efficiency may also be reduced.

In addition, when rain or snow falls on the solar panel in winter, a decrease in power generation efficiency may occur. In order to prevent the deterioration of power generation efficiency caused by dirt, snow, and rain, a photovoltaic power generation facility maintenance device is used.

The photovoltaic power generation equipment maintenance system cools the temperature of the photovoltaic panel and cleans, removes dirt, snow, and rain accumulated on the photovoltaic panel so that the solar panel can generate a constant output power. Function to maintain the facility.

Such a solar power plant maintenance device is a method of washing the solar panel by a mechanical driving force, such as a brush of the vehicle, a method of washing the solar panel by connecting the water hose to the top of the solar panel and flowing water, and a separate nozzle There is a water jet type to wash the solar panel by spraying water at a strong water pressure through.

The method of using the brush has a disadvantage in that a separate brush suitable for the photovoltaic power generation facility maintenance device is not manufactured and a special method for cooling the solar panel when it is overheated is not provided. The method of flowing water through the water hose has the disadvantage that it does not have a great effect on dirt removal or snow removal.

Therefore, the water jet type of washing the solar panel by spraying water through the nozzle is efficient. However, this method has a disadvantage in that water consumption is high because it sprays water with strong water pressure. Therefore, there is an urgent need for the development of a control method for a photovoltaic power plant maintenance device that can minimize water consumption.

The present invention is designed to overcome the disadvantages of the conventional water spraying type photovoltaic power plant maintenance device as described above, one object of the present invention is to control the water injection in time to minimize the water consumption It is to provide a control method of the holding device.

In order to achieve the above object, the present invention provides a control system of a photovoltaic power generation equipment holding device for maintaining a photovoltaic power generation equipment by spraying water, the system supplies water to the holding device along a water supply pipe Pump; A valve for controlling the water injection of the holding device by opening and closing the water supplied by the pump; And controlling the operation of the pump and opening and closing of the pump, and when the set start time is reached, drives the pump, opens the valve to supply water, and operates the timer. It may include a control unit to close the water supply by closing.

The system may further include a water level controller for detecting the level of water stored in the water supply tank and providing the detected information to the controller.

The system may further include a pressure sensor that detects the water pressure in the water supply pipe and provides the detected information to the control unit.

The system may further include a rain sensor for detecting the rainfall and providing the detected information to the controller.

The system may further include a temperature sensor for sensing an external temperature and providing the detected information to the controller.

The system may further include a recovery unit installed at the bottom and the ground of the photovoltaic module included in the photovoltaic device to receive and store the water used by the holding device.

The driving start time and the set maximum driving time may be adjusted according to the average daily temperature and average daily temperature. That is, the driving start time and the set maximum driving time may be adjusted by using the average temperature information by date and time.

According to another aspect of the present invention, there is provided a control method of a photovoltaic power generation equipment holding device for maintaining a photovoltaic power generation equipment by spraying water, the control method is a water supply valve for opening and closing the water supply to the holding device Determining, with respect to, a driving start time; Driving a pump to supply water by operating a pump and operating a timer when the driving start time is performed; And closing the valve to block the water supply when the timer is greater than or equal to the maximum driving time.

The control method may further include the step of measuring the water pressure in the water supply pipe after the timer operation step, and closing the valve in the next step when the measured water pressure is more than the minimum pressure or less than the maximum pressure of the water supply pipe.

The control method includes determining whether the rain sensor is on or off between the step of determining whether the driving time and the opening of the pump, the step of determining whether the water stored in the water supply tank is above the warning level, the solar light The method may further include at least one of determining whether the solar module included in the power generation facility is above the water temperature, and determining whether the atmospheric temperature is above the freezing temperature.

The control method may further include determining whether an auxiliary pump exists between operating the timer and measuring the water pressure, and if so, driving the auxiliary pump.

The control method may further include operating a second timer after the auxiliary pump driving step, and stopping the operation of the second timer and stopping the auxiliary pump when the water pressure in the water supply pipe is greater than or equal to a set pressure.

The control method includes the steps of operating a timer after stopping the pump; Judging the atmospheric temperature and opening the drain valve when the temperature is lower than the predetermined temperature; Determining whether the timer is equal to or longer than the product freeze drainage time and closing the drain valve if it is abnormal; Determining whether the timer is equal to or more than a free driving time and terminating the timer if it is abnormal; Determining whether the drive stop command is input by determining whether the drive time is a product; Determining whether the standby temperature is less than or equal to the expected freezing temperature when the product is not driven, and operating the timer when the temperature is less than or equal to; Opening the drain valve; And determining whether the timer is a branch pipe drainage time or more, and closing the drain valve and ending the timer if the timer is abnormal.

The driving start time and the set maximum driving time may be adjusted according to the average daily temperature and average daily temperature. That is, the driving start time and the set maximum driving time may be adjusted by using the average temperature information by date and time.

According to another embodiment of the present invention, there is provided a control method of a photovoltaic power generation equipment holding apparatus for maintaining a photovoltaic power generation equipment by spraying water, the control method of opening and closing the water supply to the holding device Determining, for a plurality of feedwater valves, whether it is a driving time; Driving a pump to supply water by operating a pump and operating a timer when the driving time is performed; And closing the valve to shut off the water supply when the timer is greater than or equal to the maximum driving time, wherein each step is performed sequentially for each of the remaining parts after being performed for any one of the plurality of water supply valves. It can be performed as.

According to the control system and method of the photovoltaic power plant maintenance apparatus of the present invention, due to deterioration of the power generation efficiency of the photovoltaic power plant due to dirt, snow, rain, and overheating accumulated on the solar panel and low temperature in winter Freezing of the water supply equipment can be prevented.

In addition, there is an advantage to minimize the water consumption by efficiently controlling the water injection in time.

Hereinafter, the same reference numerals will be described in detail with reference to the accompanying drawings, with reference to the same components preferred embodiments of the present invention. The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical meanings and concepts of the present invention.

The embodiments described in the specification and the configuration shown in the drawings are preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, various equivalents and modifications that can be substituted for them at the time of the present application are There may be.

1 is an exemplary configuration diagram of a control system of a photovoltaic power generation facility maintenance apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the control system 1 of the photovoltaic power generation equipment holding device includes a water level controller 10, a flow sensor 11, a pressure sensor 12, a PLC controller 13, a pump 14, and Valve 15 may be included.

The water level controller 10 detects the water level of the water stored in the water supply tank 101 and provides the detected information to the PLC controller 13.

The flow rate sensor 11 detects the flow rate of water in the water supply pipe and provides the detected information to the PLC controller 13.

The pressure sensor 12 detects the water pressure in the water supply pipe and provides the sensed information to the PLC controller 13.

In addition, the control system 1 may further include a rain sensor 18 for detecting whether it is currently raining and a temperature sensor 19 for sensing an external temperature.

The pump 14 functions to supply water to the photovoltaic power generation facility holding device through the water supply pipe. The pump 14 includes a water supply pump 141 for supplying and storing water in the water supply tank 101, a main pump 142 for supplying water to the photovoltaic power plant holding device, and a main pump 142. It may include an auxiliary pump 143 to assist.

The valve 15 is connected between the water supply pipe and the photovoltaic power generation equipment holding device to open and close the water supplied to the photovoltaic power generation equipment holding device through the water supply pipe. The valve 15 may include a water supply valve 151 for opening and closing the supply of water to the photovoltaic facility maintenance device and a drain valve 152 for drainage.

The PLC controller 13 is connected to the water level controller 10, the flow sensor 11, the pressure sensor 12, the pump 14, and the valve 15 to receive information and calculate and calculate the information according to the received information. It serves to control the result or command by providing it to the components.

The PLC controller 13 may include a storage device such as a RAM, a ROM, and a flashmemory for storing programming information, arithmetic results, and various commands input from a user.

The connection of the PLC controller 13 and other components may be performed by being connected to a wired or wireless communication network such as power line communication, the Internet, CDMA, Ethernet, ADLS, or the like.

In this configuration, it may further include a terminal, such as a console, a web server, a PC, or a PDA for the user's command and programming and control of the PLC controller (13).

2 is an exemplary configuration diagram of a control system of a photovoltaic power generation facility maintenance apparatus according to another embodiment of the present invention. FIG. 2 further includes a configuration for reuse of water sprayed and used by the photovoltaic power generation facility holding apparatus with respect to FIG. 1.

Therefore, the same reference numerals are used for the same components as those in FIG. 1 and the detailed description thereof will be omitted.

Referring to FIG. 2, the control system 1 of the photovoltaic power generation equipment holding device includes a water level controller 10, a flow sensor 11, a pressure sensor 12, a PLC controller 13, a pump 14, and In addition to the valve 15 may further include a water recovery portion 16 and a manhole portion 17.

The water recovery unit 16 is attached to the lower end of the photovoltaic module and serves to receive the water used by being injected from the photovoltaic power generation equipment holding device to the manhole portion 17.

The manhole portion 17 stores water supplied from the water recovery portion 16 to be reused.

Hereinafter will be described a control method of a photovoltaic power generation facility maintenance apparatus according to an embodiment of the present invention.

3 is an exemplary flowchart of a control method of a photovoltaic facility maintenance apparatus according to an embodiment of the present invention.

Referring to FIG. 3, the PLC controller 13 determines whether the preset driving start time t2 is reached, that is, whether the current time t1 is equal to the driving start time t2 (step S10).

For example, if the control system 1 according to the invention has been programmed to run on a specified time of day, week or month, or on a specified day, it is now determined whether the programmed time has arrived.

At this time, if the current start time t1 is the set start time, the PLC controller 13 may further include determining whether the rain sensor 18 is on or off (S101). In this case, if the rain sensor 18 is off, it may further include a step (S102) of determining whether the water in the water supply tank is above the warning level through the water supply level controller 10.

If the current time t1 is not the driving start time t2, the method may further include determining whether the temperature T1 of the module is greater than or equal to the set driving start temperature T4 (S15). In this case, if the temperature T1 of the module is equal to or higher than the driving start temperature T4, the process may proceed to the step S101, and if the temperature T1 of the module does not reach the driving start temperature T4, the following step (S200) You can proceed.

If the rain sensor 18 is on, the PLC controller 13 may terminate the process after the (also illustrated) rain alarm activation.

If the water in the water supply tank is at or above the warning level, the method may further include determining whether the temperature T1 of the solar module is greater than or equal to the water temperature T3 in the water supply pipe through the temperature sensor 19 (S103). .

If the water in the water supply tank is below the warning level, the process can be terminated after a (not shown) start of the water supply alarm.

If the temperature T1 of the solar module is equal to or higher than the water temperature T3 in the water supply pipe, the PLC controller 13 may drive the main pump 142 (step S20) and open the water supply valve 151 (step S40). have. At this time, the timer (not shown) may be activated (step S60). Here, the timer measures the opening time t6 of the water supply valve.

If the temperature T1 of the solar module does not reach the water temperature T3, the process can be terminated after a (not shown) temperature alarm is activated.

After the opening of the water supply valve 151, the PLC controller 13 may further include determining whether the auxiliary pump 143 is present (S80).

Auxiliary pump 143 is to increase the starting pressure to the set pressure by starting this when the injection of water at a higher pressure than usual, and since the high pressure is required in the case of washing and snow removal to determine the use of the auxiliary pump (143). do. In addition, when there is an abnormality in the starting of the main pump 142 or an abnormality in the circulation system, the system is driven through the auxiliary pump 143.

In this step, if it is determined that the sub-pump 143 is present, the PLC controller 13 may drive the sub-pump 143 and operate a timer (not shown) (step S81). Here, the timer measures the driving time t5 of the auxiliary pump 143.

Thereafter, the PLC controller 13 may further include determining whether the pressure P1 in the water supply pipe is greater than or equal to a predetermined set pressure P4 (S82).

When the pressure P1 in the water supply pipe is equal to or higher than the set pressure P4, the PLC controller 13 may stop the timer (not shown) (step S83) to stop the auxiliary pump (step S84).

If the pressure P1 in the water supply pipe does not reach the set pressure P4, the PLC controller 13 determines whether the time t5 measured by the timer is greater than or equal to the predetermined maximum set time t4 (S85). It may further include.

If the time t5 measured by the timer is greater than or equal to the maximum set time t4, the process can be terminated after the (not illustrated) pressure alarm is started.

After the auxiliary pump is stopped, or when it is determined in step S80 that the auxiliary pump 143 does not exist, the PLC controller 13 may further include a step S100 of initiating pressure measurement.

In this case, the PLC controller 13 may further include determining whether the time t6 measured so far by the timer (not shown) is greater than or equal to the set maximum driving time t3 (S120).

If the maximum drive time t3 or more, the PLC controller 13 ends the (not shown) timer and pressure measuring step (step S130).

Thereafter, the PLC controller 13 determines whether the measured maximum pressure P5 is greater than or equal to the set minimum pressure P3 and less than or equal to the set maximum pressure P4 (step S140).

If the measured maximum pressure P5 falls within this range, the PLC controller 13 closes the water supply valve 151 (step S160), and if the measured maximum pressure P5 does not fall within this range (not shown) The process can be terminated after the pressure alarm is activated.

* If the measured maximum pressure (P5) is higher than the set maximum pressure (P4), there is a problem such as freezing in the pipe.Therefore, the start is finished.When the measured maximum pressure (P5) is below the set minimum pressure (P3) Shut off start because water leak in pipe.

After closing the water supply valve 151, the PLC controller 13 stops the main pump 142 (S180).

In this case, after the closing of the water supply valve 151, the PLC controller 13 may further include determining whether the second water supply valve 151 exists.

When it is determined that the second water supply valve 151 exists, the steps S40 to S160 may be repeated with respect to the second water supply valve 151.

In this case, since it is the same as the process described with respect to the water supply valve 151, detailed description thereof will be omitted.

The method may further include a step of determining whether another second water supply valve 151 exists after the closing of the second water supply valve 151, and when it is determined that the second water supply valve 151 is present, the steps S40 to S160 may be performed. 3 can be repeated for the water supply valve (151). In this way, the above process can be repeated for a plurality of water supply valves. FIG. 5 is an exemplary flowchart illustrating a method of controlling a photovoltaic power generation facility maintaining apparatus according to another embodiment of the present invention, in which there are three water supply valves.

In short, as the solar module increases, the number of the water supply valves 151 may also increase, and in this case, steps S40 to S160 may be sequentially performed according to each water supply valve 151. .

Next, after stopping the main pump 142, the PLC controller 13 may determine whether the driving stop command is input (step S200).

The driving stop command is input when the drive is to be terminated because it is determined that the temperature does not need to be started anymore due to a stop command input by the user at the time when the automatic control system is running.

If the stop command is input, the process is terminated.

If the driving stop command is not input, the process returns to step S10 to repeat the process.

4 is an exemplary flowchart of a control method of a photovoltaic facility maintenance apparatus according to another embodiment of the present invention.

For example, the flowchart shown in FIG. 4 may represent an exemplary method of controlling the photovoltaic power generation facility maintenance apparatus in winter.

Referring to FIG. 4, the PLC controller 13 determines whether the preset driving start time t2 has been reached, that is, whether the current time t1 is equal to the driving start time t2 (step S10).

For example, if the control system 1 according to the invention has been programmed to run on a specified time of day, week or month, or on a specified day, it is now determined whether the programmed time has arrived.

At this time, if the current start time t1 is the set start time, the PLC controller 13 may further include determining whether the rain sensor 18 is on or off (S101). In this case, if the rain sensor 18 is off, it may further include a step (S102) of determining whether the water in the water supply tank is above the warning level through the water supply level controller 10.

If the current time t1 is not the driving start time t2, the method may further include determining whether the temperature T1 of the set module is greater than or equal to the set driving start temperature T4 (S15). In this case, if the temperature T1 of the module is equal to or higher than the driving start temperature T4, the process may proceed to the step S101, and if the temperature T1 of the module does not reach the driving start temperature T4, the following step (S200) You can proceed to.

If the rain sensor 18 is on, the PLC controller 13 may terminate the process after the (also illustrated) rain alarm activation.

If the water in the water supply tank is at or above the warning level, the method may further include determining whether the temperature T1 of the solar module is greater than or equal to the water temperature T3 in the water supply pipe through the temperature sensor 19 (S103). .

If the water in the water supply tank is below the warning level, the process can be terminated after a (not shown) start of the water supply alarm.

If the temperature of the photovoltaic module is equal to or higher than the water temperature in the water supply pipe, the PLC controller 13 may further include determining whether the atmospheric temperature T2 is equal to or higher than the freezing temperature through the temperature sensor 19 (S1031). . In this embodiment, the freezing temperature is set to -5 ° C, but is not limited thereto.

If the solar module does not reach the water temperature, the process can be terminated after a (not shown) temperature alarm is triggered.

If the atmospheric temperature T2 is equal to or higher than the freezing temperature, the PLC controller 13 may drive the main pump 142 (step S20) and open the water supply valve 151 (step S40). At this time, the timer (not shown) may be activated (step S60). Here, the timer measures the opening time t6 of the water supply valve.

If the ambient temperature is below freezing temperature, the process can be terminated after a freezing alarm (not shown) is triggered.

After the opening of the water supply valve 151, the PLC controller 13 may further include determining whether the auxiliary pump 143 is present (S80).

If it is determined that the auxiliary pump 143 is present, the PLC controller 13 may drive the auxiliary pump 143 and operate a timer (not shown) (step S81). Here, the timer measures the driving time t5 of the auxiliary pump 143.

Thereafter, the PLC controller 13 may further include determining whether the pressure P1 in the water supply pipe is greater than or equal to a predetermined set pressure P4 (S82).

When the pressure P1 in the water supply pipe is equal to or higher than the set pressure P4, the PLC controller 13 may stop the timer (not shown) (step S83) to stop the auxiliary pump (step S84).

If the pressure P1 in the water supply pipe does not reach the set pressure P4, the PLC controller 13 determines whether the time t5 measured by the timer is greater than or equal to the predetermined maximum set time t4 (S85). It may further include.

If the time t5 measured by the timer is greater than or equal to the maximum set time t4, the process can be terminated after the (not illustrated) pressure alarm is started.

After the auxiliary pump is stopped, or when it is determined in step S80 that the auxiliary pump 143 does not exist, the PLC controller 13 may further include a step S100 of initiating pressure measurement. The pressure in the water supply pipe is thereby measured.

In this case, the PLC controller 13 may further include determining whether the time t6 measured so far by the timer (not shown) is greater than or equal to the set maximum driving time t3 (S120).

If the maximum drive time t3 or more, the PLC controller 13 ends the (not shown) timer and pressure measuring step (step S130).

Thereafter, the PLC controller 13 determines whether the measured maximum pressure P5 is greater than or equal to the set minimum pressure P3 and less than or equal to the set maximum pressure P4 (step S140).

If the measured maximum pressure P5 falls within this range, the PLC controller 13 closes the water supply valve 151 (step S160), and if the measured maximum pressure P5 does not fall within this range (not shown) The process can be terminated after the pressure alarm is activated.

After closing the water supply valve 151, the PLC controller 13 stops the main pump 142 (S180).

In this case, after the closing of the water supply valve 151, the PLC controller 13 may further include determining whether the second water supply valve 151 exists.

When it is determined that the second water supply valve 151 exists, the steps S40 to S160 may be repeated with respect to the second water supply valve 151.

In this case, since it is the same as the process described with respect to the water supply valve 151, detailed description thereof will be omitted.

The method may further include a step of determining whether another second water supply valve 151 exists after the closing of the second water supply valve 151, and when it is determined that the second water supply valve 151 is present, the steps S40 to S160 may be performed. 3 can be repeated for the water supply valve (151). In this way, the above process can be repeated for a plurality of water supply valves.

In short, as the solar module increases, the number of the water supply valves 151 may also increase, and in this case, steps S40 to S160 may be sequentially performed according to each water supply valve 151. . 6 is an exemplary flowchart illustrating a method of controlling a photovoltaic power generation facility maintaining apparatus according to another embodiment of the present invention, in which there are three water supply valves.

After stopping the main pump 142, the PLC controller 13 starts (not shown) the spare time timer t8 (step S1801).

Spare time timer (t8) is to prevent continuous operation of the system. If continuous operation is made over a long period of time, the pump may be overwhelmed and it is set to secure the spare time to fill the water supply tank. It's time.

The PLC controller 13 determines whether the atmospheric temperature T2 is equal to or lower than the freezing temperature (step S1802), and opens the drain valve 152 when it is determined to be equal to or lower than the freezing temperature (step S1803).

Freeze temperature is the temperature at which freezing can occur due to freezing of water in the product and piping, but it can be set to 0 ℃, which is the freezing point of water, but it is set to a higher temperature in consideration of the error of the temperature sensor. The temperature was set.

Next, the PLC controller 13 determines whether the timer (not shown) is equal to or more than the freeze protection drainage time t10 (step S1804), and closes all the drain valves 152 if it is higher than the step (step S1805).

Product freeze drainage time is to measure the time to drain only the water in the product to prevent freeze during initial commissioning and input it to the initial setting value. The freeze protection drain time depends on the size of each system and equipment.

Subsequently, the PLC controller 13 determines whether the timer t8 (not shown) is equal to or greater than the spare driving time t7 (step S1806) and terminates the (not shown) spare time timer (step S1807).

Next, the PLC controller 13 may determine whether it is a product driving time (step S1808), and if it is a product driving time, it may determine whether a driving stop command is input (step S200).

This step is a step for draining the water in the branch pipe if the possibility of freezing due to the low air temperature when the automatic control operation of the product is finished. Therefore, if it is not the time to end the product of the automatic control drive is added to not go through the process of draining the water in the branch pipe. After all, the running time of the product is the same as the running time of the product at the initial start stage.

If the driving stop command has not yet been input, the process may return to step S10 to repeat the process.

If the drive stop command is input or if it is determined in step S1808 that it is not the product driving time, the PLC controller 13 determines whether the standby temperature is equal to or lower than the expected freezing temperature (step S1809) and starts a free time timer if Step S1810) If it is determined that the atmospheric temperature is not lower than or equal to the expected freezing temperature, the process may end.

After starting the idle timer (not shown), the PLC controller 13 opens all the drain valves 152 (step S1811) and determines whether the timer (not shown) is longer than the branch pipe draining time t11 (step S1812). If it is abnormal, all the drain valves are closed (step S1813) and the idle timer (not shown) is terminated (step S1814) to end the process.

There are main pipes and branch pipes in the installation of the product. The main pipes are thick pipes supplying water to each branch pipe and are located deep in the ground, so there is little concern about freezing. However, since the branch pipe is located above the main pipe, drainage time is required depending on the installed depth, and for this reason, the branch pipe has a drainage time in winter.

The technical spirit of the present invention has been described above with reference to the accompanying drawings, but this is only illustrative of the preferred embodiments of the present invention and is not intended to limit the present invention. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

1 is an exemplary configuration diagram of a control system of a photovoltaic power generation facility maintenance apparatus according to an embodiment of the present invention;

2 is an exemplary configuration diagram of a control system of a photovoltaic facility maintenance apparatus according to another embodiment of the present invention;

3 is an exemplary flowchart of a control method of a photovoltaic power generation facility maintenance apparatus according to an embodiment of the present invention;

4 is an exemplary flowchart of a control method of a photovoltaic power generation facility maintenance apparatus according to another embodiment of the present invention;

5 is an exemplary flowchart of a control method of a photovoltaic facility maintenance apparatus according to another embodiment of the present invention;

Figure 6 is an exemplary flow chart of a control method of the photovoltaic power generation equipment maintenance apparatus according to another embodiment of the present invention.

Claims (8)

As a control system of the photovoltaic power generation facility maintenance device which sprays water and maintains the photovoltaic power generation facility, A pump for supplying water to the holding device along a water supply pipe; A valve for controlling the water injection of the holding device by opening and closing the water supplied by the pump; Control the operation of the pump and opening and closing of the valve, but when the drive start time, the pump is driven and the valve is opened to supply water and start the timer, and close the valve when the timer operation time is above the set maximum drive time A control unit to block the water supply; A water level controller which senses the water level stored in the water supply tank and provides the detected information to the controller; A pressure sensor which senses the water pressure in the water supply pipe and provides the detected information to the controller; A rain sensor for detecting rainfall and providing the detected information to the controller; And It includes a temperature sensor for sensing the temperature of the module, the temperature of the water and the temperature of the atmosphere and provides the detected information to the controller, The control unit may determine that the water level detected by the water level controller is below the warning level, is determined by rain sensor, the temperature of the module is below the water temperature, the atmospheric temperature is below the freezing temperature, or the water pressure in the water supply pipe. The control system of the photovoltaic power generation equipment holding device, characterized in that the start of the holding device is terminated when the range is not more than the set minimum pressure or less than the maximum pressure. The method of claim 1, And a recovery unit installed at the bottom or the ground of the photovoltaic module included in the photovoltaic system to receive and store water used by the holding device. The method of claim 1, The driving start time and the set maximum driving time is controlled according to the average temperature by day and the average temperature by time control system of a photovoltaic power generation equipment maintenance device. A control method of a photovoltaic power generation equipment holding device which maintains a photovoltaic power generation facility by spraying water, comprising: a water supply valve for opening and closing a water supply pipe for supplying water to the holding device; Determining whether it is a driving start time; Driving a pump, opening a valve to supply water and operating a timer when the start time is driven; And And closing the valve to cut off the water supply when the operation time of the timer is equal to or greater than the set maximum driving time. After the timer operation step, the water pressure in the water supply pipe is measured and if the measured water pressure is above the set minimum pressure or below the maximum pressure of the water supply pipe, the valve is closed in the next step and the start of the holding device is not included in the range. Further comprising terminating, Determining whether it is the driving start time and driving the pump; determining whether the rain sensor is on or off, and if it is determined that the rainfall is in progress, terminating the start of the holding device; the water stored in the water supply tank is at or above the warning level. Determining whether it is below the warning level, terminating the start of the holding device; determining whether the solar module included in the solar power generation facility is above the water temperature, and when the temperature of the solar module is below the water temperature, the holding device Terminating the startup of the engine, and determining whether the air temperature is equal to or higher than the freezing temperature, and terminating starting of the holding device when the air temperature is lower than the freezing temperature. . The method of claim 4, wherein And determining whether or not the auxiliary pump exists between the step of operating the timer and the step of measuring the water pressure, and if so, driving the auxiliary pump. The method of claim 5, And operating a second timer after the auxiliary pump driving step and stopping the operation of the second timer and stopping the auxiliary pump when the water pressure in the water supply pipe is greater than or equal to a set pressure. Control method of holding device. The method of claim 4, wherein The driving start time and the set maximum driving time is controlled according to the average temperature by date and the average temperature by time. A control method of a photovoltaic power generation facility holding device for maintaining a photovoltaic power generation facility by spraying water, comprising: a plurality of water supply valves for opening and closing a water supply pipe for supplying water to the holding device; Determining whether it is a driving start time; Driving a pump, opening a valve to supply water and operating a timer when the start time is driven; And Closing the valve to shut off the water supply when the timer is greater than or equal to the maximum driving time; After the timer operation step, the water pressure in the water supply pipe is measured and if the measured water pressure is above the set minimum pressure or below the maximum pressure of the water supply pipe, the valve is closed in the next step and the start of the holding device is not included in the range. Further comprising terminating, Determining whether it is the driving start time and driving the pump; determining whether the rain sensor is on or off, and if it is determined that the rainfall is in progress, terminating the start of the holding device; the water stored in the water supply tank is at or above the warning level. Determining whether it is below the warning level, terminating the start of the holding device; determining whether the solar module included in the solar power generation facility is above the water temperature, and when the temperature of the solar module is below the water temperature, the holding device Terminating the start of the step, and determining whether the standby temperature is equal to or higher than the freezing temperature, and ending the starting of the holding apparatus when the standby temperature is lower than the freezing temperature, Wherein each step is performed for any one of the water supply valve of the plurality of water supply valve control method of the photovoltaic power generation equipment maintenance device characterized in that it is performed sequentially for each of the remaining.

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