7 Tips to maintain a PV Solar farms

1. Field Maintenance
(1) A Staff clean it twice a month, clean the dust in time.
(2) Check to see if the field area's fences, safety signs, and information bulletin boards are still in good shape.
(3) Check the equipment at the solar power station to make sure it doesn't get lost, damaged, or stolen. People who aren't on staff should not go near the photovoltaic arrays, and birds, animals, or other foreign objects should be pushed away and cleaned up right away.
(4) Do your best to listen to and write down the daily local weather report on time, and be ready for accidents and take steps to keep the photovoltaic power plant safe.
(5) Keep an eye on and write down the working parameters of the PV power plant's equipment, keep track of how much power the plant makes, and keep a good management record of the PV power plant.
(6) The testers should be able to do basic fault analysis for the PV power station. They should also let the unit know about the power station and the professional operation and maintenance unit know about the faults so they can be fixed quickly.

2. Taking Care of Parts
(1) Check the PV modules and exposed wires for insulation wear and mechanical damage on a regular basis. The modules and brackets should fit together well, and the press blocks should be tightly crimped. If a problem is found, the module needs to be fixed or changed right away.
In this case, the module looks like the glass is broken, the junction box is bent, twisted, cracked, or burned, the terminals can't be joined properly, and so on.
(2) Keep the PV units' surfaces clean. If there is dust or snow on the module or if it is not cleaned for a long time, it will collect dust on the lower end of the solar panel. This will make the solar panel look like it has serious black marks and hot spots inside it, which will stop it from making power and could even start a fire. There are different ways to clean, such as by hand, with a high-pressure water gun, a spray bottle, professional cleaning tools, and so on.

When cleaning parts, you should pay attention to these things:
01. Cleaning time: it's best to clean in the early morning or late evening, when the light isn't too strong. This is because the sunlight is weak at these times, so there isn't much power loss. Also, you want to avoid casting artificial shadows on the solar panels during the day to avoid the hot spot effect caused by strong light, which can be harmful to people.
02. Cleaning cycle: the cleaning cycle is based on how dirty the parts are; usually, they should be cleaned once or twice a month, but dusty areas should be cleaned more often as needed.
03. Make sure you're safe: bolts and parts have a lot of sharp corners. When you're cleaning parts, be extra careful not to get cut by these corners.
04. Wipe the module down with a clean soft cloth.
05. Do not soak the back of the solar panel when you wash the front side.
06. The junction box and wire tray of the module should not be sprayed with water.Control the water pressure with a high-pressure water gun to avoid making cracks that are hard to see.
07. Cleaning the PV module is not allowed in bad weather. In the winter, the surface is dried off with a rag after cleaning. cleaning should not happen when the temperature is too low to keep the surface from freezing.

3. Inverter maintenance
(1) There shouldn't be any rust, dust buildup, or other problems with the inverter.
(2) The inverter should be in a good setting for getting rid of heat.
(3) When the transformer is running, there shouldn't be any loud noises or big vibrations.
(4) The inverter's warning signs should be whole and not broken.
(5) The inverter fan should be able to start and stop by itself, and it shouldn't make a lot of noise or vibrations when it's going. If there is a problem, the power should be turned off and the problem should be looked at.
(6) Pay close attention to see if the inverter's warmth, sound, or smell are off. When the temperature outside is higher than 40 °C, steps should be taken to keep it from breaking from overheating and to make it last longer.
(7) If the safety action stops the inverter from working, you should figure out why and fix it before you turn on the power again.
(8) Check the wires in every part of the inverter on a regular basis to see if it is becoming loose. If you find any problems, fix them right away.
(9) Look at the power curve, the daily power generation energy, and the total power generation energy through the transformer. Use the fault code to find the problem.

4. Upkeep of distribution boxes
(1) Learn how each piece of electrical equipment works and what it's used for, and remember the important information about each piece of equipment in the distribution box.
(2) The distribution box must not be deformed, corroded, leak water, or collect dust. The safety warning signs on the outside of the box must be intact, and the lock on the box must be able to be opened and closed easily.
(3) The circuit breaker in the distribution box works properly; the connections shouldn't be loose, rusted, or dull. No strange sounds coming from the equipment, no smells coming from the area where it is used, and the measuring and metering meter showing normal readings.

5. Maintenance on cables and connectors
(1) To begin, it is suggested that the wires be checked once a month.
(2) The wires shouldn't be used when they're overloaded, and any damage to the cable sheath should be taken care of right away.
(3) There shouldn't be any holes in the cable going into or out of the tools that are bigger than 10 mm. If there are, fireproof mud should be used to block them.
(4) The cable between the lines shouldn't have too much force on it.
(5) The wire should be securely tied down and not just hanging there. The inside of the cable safety tube should have a smooth wall, and the metal cable tube shouldn't have any major corrosion, burrs, hard objects, or trash in it.
(6) To make sure the cables touch well, the joints should be sealed tightly. If the joints fail, the inverter should be turned off right away, and the other joints that are linked to it should be disconnected too, so the joints can't be crimped again.

6. Taking care of brackets
(1) All of the bolts and bracket links need to be strong and firm.
(2) The anticorrosion covering on the bracket's surface should not be cracked or peeled off. If it is, it needs to be repainted right away.
(3) The stent should always be well grounded, and the grounding system should be checked every year before storm season starts, mostly to make sure the link is solid and the contact is good.
(4) After typhoons, storms, and other bad weather, the PV square array should be checked as a whole to see if it has curled, shifted, or come free. The nuts that hold the PV bracket in place should not be loose.
(5) Install the photovoltaic bracket on a premade base. The base should be put down smoothly and neatly, and it should not move. If the bottom of the bracket is attached to the roof, you should check the roof's waterproofing often to make sure it is full and will last.

7. Lightning protection and regular care of the ground
(1) The lightning protection grounding system welded the rusty point, and the grounding visible part of the paint peeled off just in time to get rid of the rust and paint.
(2) The connections between the parts, brackets, and the ground and the roof grounding network should be solid. The PV square array should have a continuous and solid grounding, and the grounding resistance should be less than 4 Ω.
(3) Before thunderstorm season starts, the grounding system should be fully inspected and maintained to make sure the connection is solid and the contact is good. Any problems should be found early so they can be fixed. The lightning protection module should also be tested, and any modules that are found to be broken should be replaced right away.

How to run and keep a photovoltaic power station in a safe and effective way
Work and maintenence
As the economy and society grow, the power grid's load keeps going up. The power grid is also always getting better. There are more and more 10 kV lines, which are the main power supply for the county power grid. More and more people can access distributed power supplies, and the line load is becoming more and more varied. With dispatch being the main part of grid monitoring, monitoring chores are getting heavier. The dispatcher at State Grid Henan Wenxian Power Supply Company is in charge of keeping an eye on 101 lines across the county. It's now important to figure out how to make shift tracking more effective so that the dispatcher can quickly understand how the 10 kV line works and find and fix faults quickly.

01: Scheduling and tracking shifts:
Once they take over, they have to check the lines and compare the day's load to the day before, with or without sudden changes, so they can do a good job of analyzing the load and making short-term predictions about the load;
line a day in case of sudden changes in the load that need to be found quickly and thrown away;
If there are power outages in a large area, the dispatcher must first check the region's power supply multiple line load curve to find the possible fault line while answering the phone and answering the customer's questions about the line of the outage. They must then close the loop operation while keeping an eye on the changes in the load on multiple lines.
If there is a large-scale power outage, the dispatcher will have to look at the load curves of various power lines in the area to figure out which ones might be broken and quickly find them while answering customer questions. iv. Keep an eye on how the load changes on multiple lines at the same time while the loop is ending. When the dispatcher is watching over the grid, he often has to look at the line load curves and compare them to figure out which lines aren't working right. As the grid grows and more lines are added, looking at the load curve takes longer, which makes it take longer for the dispatcher to study and decide on the faults. This slows down the process of fixing faults quickly, getting power back on for users as soon as possible, and can cause hidden problems with the petitions.

02. When a dispatcher uses a load index map to improve the efficiency of their monitoring, they can see the green and flowery numbers in the system monitoring interface. Experienced dispatchers can see the line conditions by looking at the numbers, but new dispatchers who only look at the numbers may miss the best time to deal with an accident, so finding faults quickly is very important. All of these issues can be fixed if the line load curve can be shown in real time.

03. PV O&M tracking tools should be used efficiently.
Using a PV O&M tracking system is the best way to find problems before they happen. The main parts of a PV O&M monitoring system are a smart meter gathering and monitoring system, an inverter data collection O&M management system, and an outdoor monitoring video system for the field. Accurately collecting metering data from smart meters is a clear way to figure out how much money PV power stations can make to help reduce poverty. The data can also be analyzed to evaluate power stations and handle their operation and repair.
On the one hand, the inverter data collection operation and maintenance management system makes it possible to monitor who can access the State Grid platform. On the other hand, it is a key part of smart operation and maintenance.