KR101039737B1 - System and method of controlling solar cell facility 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. In the control method of the photovoltaic power plant maintenance apparatus of the present invention, the temperature difference between the temperature of the module and the water temperature difference between the measured module temperature and the water is set to the water supply valve for opening and closing the water supply to the holding device Determining cognition; Driving a pump, opening a valve to supply water, and operating a timer when the measured temperature difference between the temperature of the module and the water is equal to or greater than the set temperature difference between the temperature of the module and the water; Determining whether the measured temperature difference between the temperature of the module and water is less than the temperature difference between the set temperature of the module and the water; And closing the valve to shut off the water supply when the measured temperature difference between the temperature of the module and the water becomes less than the set temperature difference between the temperature of the module and the water.

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 MAINTENANCE DEVICE {SYSTEM AND METHOD OF CONTROLLING SOLAR CELL FACILITY MAINTENANCE DEVICE}

The present invention relates to a control system and method for maintaining a photovoltaic device, and more particularly to a system and method for controlling a holding device used in a photovoltaic device using a temperature difference.

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, the photovoltaic power generation equipment holding device is used.

The photovoltaic power plant maintenance system cools the temperature of the solar panel and cleans, cleans, cleans, cleans, cleans, cleans, cleans, cleans, cleans, cleans, cleans, cleanses, and removes dirt and snow. 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 upper part of the solar panel by 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 a brush has a disadvantage in that a separate brush suitable for maintaining a photovoltaic facility 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 of 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 photovoltaic power plant maintenance device as described above, one object of the present invention is to control the water injection using a temperature difference to minimize the water consumption It is to provide a method for controlling a power plant maintenance device.

In order to achieve the above object, the present invention provides a control system of a photovoltaic power generation facility maintenance apparatus for maintaining a photovoltaic power generation facility by spraying water, comprising: 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; And controlling the operation of the pump and opening / closing of the pump, and when the measured temperature difference between the temperature of the module and the water exceeds the set temperature difference between the temperature of the module and the water, the pump is driven and the valve is opened to supply water and a timer. And a control unit for shutting off the water supply by closing the valve when the temperature difference between the measured module temperature and water is less than the set temperature difference between the set temperature and the water. To provide a control system.

The control system of the photovoltaic power plant maintenance apparatus, the water level controller for detecting the water level of the water stored in the water supply tank and providing 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 a temperature sensor for sensing a temperature and providing the detected information to the controller.

The control system of the photovoltaic power plant maintenance apparatus may further include a recovery unit installed at the bottom and the ground of the photovoltaic module included in the photovoltaic power generation equipment to receive and store water used by the holding apparatus. .

The present invention also relates to a control method of a photovoltaic power generation equipment holding device which maintains a photovoltaic power generation facility by spraying water, wherein the measured temperature of the module and water are measured with respect to a water supply valve for opening and closing the water supply to the holding device. Determining whether the temperature difference is greater than a temperature difference between the temperature of the set module and the water; Driving a pump, opening a valve to supply water, and operating a timer when the measured temperature difference between the temperature of the module and the water is equal to or greater than the set temperature difference between the temperature of the module and the water; Determining whether the measured temperature difference between the temperature of the module and water is less than the temperature difference between the set temperature of the module and the water; And closing the valve when the measured temperature difference between the temperature of the module and the water is less than the set temperature difference between the set temperature and the water to shut off the water supply. To provide.

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

Control method of the solar power equipment maintenance device, determining whether the measured temperature difference between the temperature of the module and water is greater than the difference between the temperature of the set module and the temperature of the water and driving the pump on and off The method may further include at least one of determining whether the water stored in the water supply tank is above a warning level, and determining whether the solar module included in the solar power generation facility is above a water temperature. Can be.

The method may further include driving the auxiliary pump if there is a control method between the control method of the solar power plant maintenance apparatus, operating the timer, and measuring the water pressure.

After the auxiliary pump driving step, the second timer is operated and if the water pressure in the water supply pipe is greater than the set pressure may further comprise the step of stopping the operation of the second timer and the auxiliary pump.

The control method of the photovoltaic power generation equipment holding device is also a control method of the photovoltaic power generation equipment holding device which maintains the photovoltaic power generation facilities by spraying water. Determining whether the measured temperature difference between the temperature of the module and the water is equal to or greater than the temperature difference between the set temperature of the module and the water; Driving a pump, opening a valve to supply water, and operating a timer when the measured temperature difference between the temperature of the module and the water is equal to or greater than the set temperature difference between the temperature of the module and the water; Determining whether the measured temperature difference between the temperature of the module and water is less than the temperature difference between the set temperature of the module and the water; And closing the valve to shut off the water supply when the measured temperature difference between the temperature of the module and the water becomes less than the set temperature difference between the temperature of the module and the water. The water supply valve of any one of the plurality of water supply valves is included. For each of the remaining water supply valves after the respective steps are performed, the steps after the step of opening the valve to supply water and operating the timer are sequentially performed. Provide control method.

A control method of a photovoltaic device maintenance device for maintaining a photovoltaic power generation facility by spraying water, wherein the measured difference between the temperature of the module and the water temperature is measured for a plurality of water supply valves that open and close the water supply to the holding device. Determining whether a temperature difference between the temperature of the set module and the water is equal to or greater than a value; Driving a pump, opening a valve to supply water, and operating a timer when the measured temperature difference between the temperature of the module and the water is equal to or greater than the set temperature difference between the temperature of the module and the water; Determining whether the measured temperature difference between the temperature of the module and water is less than the temperature difference between the set temperature of the module and the water; And closing the valve to shut off the water supply when the measured temperature difference between the temperature of the module and the water becomes less than the set temperature difference between the temperature of the module and the water. The water supply valve of any one of the plurality of water supply valves is included. For each of the remaining water feed valves after the respective steps are performed, opening the valve to supply water and to start a timer; And closing the valve to shut off the water supply after a time elapsed when the temperature difference between the module temperature and water measured for the initial water supply valve is less than the temperature difference between the set module temperature and the water. Provided is a control method of a photovoltaic device maintenance device.

According to the control system and method of the solar power plant maintenance device of the present invention, it is possible to prevent the fall of the power generation efficiency of the solar power plant due to dirt, snow, rain and overheating accumulated in the solar panel and the freezing of the product due to the low temperature in winter. have.

In addition, there is an advantage that can minimize the water consumption by efficiently controlling the water injection in accordance with the change in the temperature difference.

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 replace 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 device maintenance apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the control system 1 of the photovoltaic power plant maintenance apparatus includes a water level controller 10, a flow sensor 11, a pressure sensor 12, a PLC controller 13, a pump 14, and And a valve 15.

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 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 the temperature.

The pump 14 functions to supply water to the photovoltaic power plant maintenance device through the water supply pipe. The pump 14 may include 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 device maintenance device, and a main pump 142. Auxiliary auxiliary pump 143 is included.

The valve 15 is connected between the water supply pipe and the photovoltaic power generation facility holding device so as to open and close water supplied to the photovoltaic power generation device holding device through the water supply pipe. The valve 15 includes a water supply valve 151 for opening and closing the supply of water to the photovoltaic device 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, the valve 15, receives information, calculates and connects according to the received information. It functions to provide calculations or instructions 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 plant maintenance apparatus according to another embodiment of the present invention. FIG. 2 further includes, for FIG. 1, a component for reuse of water sprayed and used by the photovoltaic power plant maintenance apparatus.

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 plant maintenance apparatus 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, it further includes 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 supply the manhole portion 17 by receiving the used water sprayed from the photovoltaic power generation equipment holding device.

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 device maintenance apparatus according to an embodiment of the present invention.

3 is an exemplary flowchart of a control method of a solar power plant maintenance apparatus according to an embodiment of the present invention.

Referring to FIG. 3, the PLC controller 13 compares the module and the water temperature difference setting value dT1 that starts the operation of the device with the difference between the temperature T1 and the water temperature T3 of the measured module. (S10).

* Herein, the water temperature, the water temperature, and the like refer to the water temperature of the tap water, the water supply tank, the water supply pipe, and the like, and may be appropriately selected and used as necessary. However, in general, the temperature of water in tap water, water supply tank, water supply pipe, etc. is almost similar, so it may be regarded as the same.

In this embodiment, the system is controlled by comparing the temperature difference setting values between the module and the water and the temperature difference measurement values between the module and the water, but the system is controlled by comparing the temperature difference setting values between the module and the air and the temperature difference measurement values between the module and the air. The way of doing this is also applicable.

In this case, when the actual measured difference value T1-T3 is equal to or larger than the set value dT1, 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.

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 when the actually measured difference value T1 to T3 is less than the set value dT1. 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) Proceed to

If the rain sensor 18 is on, the PLC controller 13 ends the process after the (not shown) rain alarm is activated.

If the water in the water supply tank is at or above the warning level, the method further includes a step S103 of 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.

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

When 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 drives the main pump 142 (S20) and opens the water supply valve 151 (S40). Then (not shown) start the timer (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 ends after the (not shown) temperature alarm is activated.

After the opening of the water supply valve 151, the PLC controller 13 further includes 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 drives the sub-pump 143 and operates a timer (not shown) (S81). Here, the timer measures the driving time t5 of the auxiliary pump 143.

Thereafter, the PLC controller 13 further includes a step S82 of determining whether the pressure P1 in the water supply pipe is greater than or equal to a predetermined set pressure P4.

When the pressure P1 in the water supply pipe is equal to or higher than the set pressure P4, the PLC controller 13 stops the timer (not shown) (S83) and stops the auxiliary pump (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 includes more.

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 further includes a step S100 of initiating pressure measurement. The pressure in the water supply pipe is thereby measured.

Thereafter, the method may further include determining whether the module and the water temperature difference setting value dT1 exceed the difference between the temperature T1 and the water temperature T3 of the measured module.

At this time, when the actual measured difference value (T1-T3) is less than the set value (dT1), the timer and the pressure measuring step ends (S130).

If the actual measured difference value T1-T3 is equal to or greater than the set value dT1, it is determined whether the measured time t6 to date is greater than the maximum set time t3 (S120), and the measured time t6 to the present time. If the maximum set time (t3) or more proceeds to the step (S130) to end the timer and pressure measurement step. If the current measurement time t6 is less than the maximum set time t3, the process proceeds to step S110 again.

Here, the reason for proceeding the step S120, is to hold the temperature difference of the module too large to prevent unnecessary water consumption. The temperature change of the module changes rapidly in the beginning, but gradually changes gradually toward the back, so that the set time is given and the sector driving is terminated when the module is driven longer.

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 (S140).

If the measured maximum pressure P5 falls within this range, the PLC controller 13 closes the water supply valve 151 (S160), and if the measured maximum pressure P5 does not fall within this range (not shown) Terminate the process after alarm activation.

If the measured maximum pressure (P5) is higher than the set maximum pressure (P4), a problem such as freezing occurs in the pipe. Therefore, start up.If the measured maximum pressure (P5) is below the set minimum pressure (P3), the pipe My leak has occurred, so start up.

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. .

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

Thereafter, it is determined whether the time t8 of the spare time timer is greater than the maximum driving time t7 (S191). Here, when the time t8 of the spare time timer is greater than or equal to the maximum driving time t7, the spare time timer is terminated (S192). When the time t8 of the spare time timer is less than the maximum driving time t7, the timer is terminated after the time t8 of the spare time timer becomes more than the maximum driving time t7 (S192).

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.

Next, the PLC controller 13 determines whether a driving stop command is input (step S200).

The drive 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 no drive stop command is input, the process returns to step S10 to repeat the process.

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

Referring to FIG. 4, the PLC controller 13 compares the module and the water temperature difference setting value dT1 and the actual measured module temperature T1 and the water temperature T3 difference value to start the operation of the device. (S10).

In this case, when the actual measured difference value T1-T3 is equal to or larger than the set value dT1, 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.

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 when the measured difference value T1-T3 is less than the set value dT1 (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) Proceed to

If the rain sensor 18 is on, the PLC controller 13 ends the process after the (not shown) rain alarm is activated.

If the water in the water supply tank is at or above the warning level, the method further includes a step S103 of 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.

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

When 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 drives the main pump 142 (S20) and opens the water supply valve 151 (S40). Then (not shown) start the timer (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 ends after the (not shown) temperature alarm is activated.

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

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

Thereafter, the PLC controller 13 further includes a step S82 of determining whether the pressure P1 in the water supply pipe is greater than or equal to a predetermined set pressure P4.

When the pressure P1 in the water supply pipe is equal to or higher than the set pressure P4, the PLC controller 13 stops the timer (not shown) (S83) and stops the auxiliary pump (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 includes more.

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 further includes a step S100 of initiating pressure measurement. The pressure in the water supply pipe is thereby measured.

Thereafter, the method may further include determining whether the module and the water temperature difference setting value dT1 exceed the difference between the temperature T1 and the water temperature T3 of the measured module.

At this time, when the actual measured difference value (T1-T3) is less than the set value (dT1), the time t6 measured so far is stored in the temperature control drive time storage variable t9 (S121). Using the stored temperature control drive time storage variable t9 as described above enables temperature control without performing steps S110 and S120 to be performed on the second and third water supply valves 151.

When the actual measured difference value T1-T3 is equal to or larger than the set value dT1, it is determined whether the measured time t6 to date is greater than the maximum set time t3 (S120), and the measured time t6 until now. If is greater than or equal to the maximum set time (t3) is also stored in the temperature control drive time storage variable (t9) the time t6 measured up to now (S121). If the current measurement time t6 is less than the maximum set time t3, the process proceeds to step S110 again.

Next, the step of ending the timer and pressure measurement 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 (S140).

If the measured maximum pressure P5 falls within this range, the PLC controller 13 closes the water supply valve 151 (S160), and if the measured maximum pressure P5 does not fall within this range (not shown) Terminate the process after alarm activation.

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

If it is determined that the second water supply valve 151 is present, the steps S40 to S160 are repeated with respect to the second water supply valve 151.

However, step S110 and step S120 to be described below are not performed, and instead, it is determined whether the time t6 measured so far for the second water feed valve is greater than or equal to the temperature control driving time storage variable t9 obtained through step S121 ( S122).

At this time, if the time t6 measured so far is equal to or higher than the temperature control drive time storage variable t9, the operation S130 ends the timer and the pressure measurement. Otherwise, the operation S122 is repeated to repeat the time measured so far ( When t6) becomes equal to or greater than the temperature control drive time storage variable t9, the controller 130 proceeds to step S130 of terminating the timer and the pressure measurement.

The method may further include determining whether another third water supply valve 151 exists after the second water supply valve 151 is closed, and if it is determined that the second water supply valve 151 exists, the process proceeded to the second water supply valve 151 is repeated. . If the number of the water supply valve is more than that is the same process.

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

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

Thereafter, it is determined whether the time t8 of the spare time timer is greater than the maximum driving time t7 (S191). Here, when the time t8 of the spare time timer is greater than or equal to the maximum driving time t7, the spare time timer is terminated (S192). When the time t8 of the spare time timer is less than the maximum driving time t7, the timer is terminated after the time t8 of the spare time timer becomes more than the maximum driving time t7 (S192).

Next, the PLC controller 13 determines whether a driving stop command is input (step S200).

If the stop command is input, the process is terminated. If no drive stop command is input, the process returns to step S10 to repeat the process.

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 solar power plant maintenance apparatus according to an embodiment of the present invention;

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

3 is an exemplary flowchart of a control method of a solar power plant maintenance apparatus according to an embodiment of the present invention;

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

Claims (7)

A control system of a photovoltaic power plant maintenance device for maintaining a photovoltaic power plant by spraying water, comprising: a pump for supplying water to the photovoltaic power plant maintenance device along a water supply pipe; A valve for opening and closing the water supplied by the pump to control the water injection of the photovoltaic device maintenance device; And While controlling the operation of the pump and opening and closing of the pump, the temperature difference between the temperature of the module and the water in the water supply pipe is greater than the set value of the temperature difference between the temperature of the module and the water in the water supply pipe, the pump is driven and the valve is opened. Control the water supply by operating the timer, and closes the valve to shut off the water supply when the measured temperature difference between the module temperature and the water in the water supply pipe is less than the set temperature difference between the module temperature and the water in the water supply pipe: A water level controller which detects the water level of the water stored in the water supply tank of the photovoltaic power plant maintenance device 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 in the water supply pipe and provides the detected information to the controller, The controller may determine that the water level detected by the water level controller is below the warning level, is determined by rain sensor, or the temperature of the module is less than the temperature of the water in the water supply pipe, or the water pressure in the water supply pipe is greater than or equal to the set minimum pressure. The control system for a photovoltaic power plant maintenance apparatus, characterized in that the start of the photovoltaic power plant maintenance apparatus is terminated when not within the range below the maximum pressure. The method of claim 1, It is installed on the bottom or ground of the photovoltaic module included in the photovoltaic power generation equipment, characterized in that it further comprises a recovery unit for receiving and storing the water used by the photovoltaic facility maintenance device Control system. As a control method of a photovoltaic power generation equipment holding device for maintaining a photovoltaic power generation facility by spraying water, with respect to a valve for opening and closing the water supply to the photovoltaic power generation device holding device, (S1) comparing the measured temperature difference between the temperature of the module and the water in the water supply pipe with the set temperature difference between the temperature of the module and the water in the water supply pipe; (S2) If it is determined in step (S1) that the measured temperature difference between the temperature of the module and the water in the water supply pipe is greater than the set temperature difference between the temperature of the module and the water in the water supply pipe, supplying water to the photovoltaic device maintenance device. Operating a pump to open a valve to supply water and to measure a valve opening time; (S3) when the temperature difference measurement value of the temperature of the module and the water in the water supply pipe in the step (S1) is determined to be less than the temperature difference setting value of the temperature of the module and the water in the water supply pipe, closing the valve to block the water supply; Including, (S4) after the step (S2) further comprises measuring the water pressure in the water supply pipe and closing the valve when the measured water pressure is more than the set minimum pressure or less than the maximum pressure of the water supply pipe, Determining whether the rain sensor is on or off between the step (S1) and the step (S2), if it is determined that it is raining, ending the start of the apparatus for maintaining the photovoltaic power generation facility, and whether the water stored in the water supply tank is above the warning level. Determining if the water level is less than the warning level, the step of terminating the startup of the photovoltaic facility maintenance device, and whether the photovoltaic module included in the photovoltaic facility is above the temperature of the water in the water supply pipe If the temperature of the water in the water supply pipe is less than the temperature control method of the photovoltaic power plant maintenance device, characterized in that it further comprises at least one step of terminating the startup of the photovoltaic facility maintenance device. The method of claim 3, wherein The method of controlling the photovoltaic power generation equipment maintenance device, characterized in that it further comprises the step of driving the auxiliary pump if there exists a determination between the step (S2) and (S4). The method of claim 4, wherein 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 equal to or greater than a set pressure. Control method of holding device. delete A control method of a photovoltaic power generation facility holding device for spraying water to maintain a photovoltaic power generation facility, comprising: at least two valves for opening and closing a water supply to the photovoltaic power generation facility maintenance device; (S1) comparing the measured temperature difference between the temperature of the module and the water in the water supply pipe with the set temperature difference between the temperature of the module and the water in the water supply pipe; (S2) If it is determined in step (S1) that the measured temperature difference between the temperature of the module and the water in the water supply pipe is greater than the set temperature difference between the temperature of the module and the water in the water supply pipe, supplying water to the photovoltaic device maintenance device. Operating a pump to open a valve to supply water and to measure a valve opening time; (S3) when the temperature difference measurement value of the temperature of the module and the water in the water supply pipe in the step (S1) is determined to be less than the temperature difference setting value of the temperature of the module and the water in the water supply pipe, closing the valve to block the water supply; Including, (S4) after the step (S2) further comprises measuring the water pressure in the water supply pipe and closing the valve when the measured water pressure is more than the set minimum pressure or less than the maximum pressure of the water supply pipe, Determining whether the rain sensor is on or off between the step (S1) and the step (S2), if it is determined that it is raining, ending the start of the apparatus for maintaining the photovoltaic power generation facility, and whether the water stored in the water supply tank is above the warning level. Determining if the water level is less than the warning level, the step of terminating the startup of the photovoltaic facility maintenance device, and whether the photovoltaic module included in the photovoltaic facility is above the temperature of the water in the water supply pipe When the temperature of the water in the water supply pipe is lower than at least one of the step of terminating the start of the maintenance device of the solar power plant, further comprising: The remaining valves are sequentially opened after the respective steps are performed for any one of the two or more valves, and the remaining valves are opened for the time that the first open valve is opened. Control method of holding device.

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