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Sept 16 , 2020
Didi~The end of the trip to the exhibition is here. See you next year!  SRNE SRNE Exhibition Tour - Successfully Ended  8.18 World Solar PV Industry Exposi...
June 4 , 2020
Simple, off-grid PV power plant is the solar power stored in the battery, and then converted into a 220V household voltage by an inverter. Power stations and networks can probably understand from the name, which refers to the city and are electrically connected together, and grid PV power station is no electrical energy storage device directly through an inverter to convert the voltage requirements of the national grid needs and priorities for household use.      The electricity that the households can’t use can be sold to the country. Current national policy support, is vigorously support the solar photovoltaic power generation, household photovoltaic power stations as long as power generation, there will be state subsidies. However, if you want to connect to the grid, you must first apply to the local state power grid department .       First, the grid PV station      Grid connection is to connect to the public power grid, that is, to connect solar power generation, home power grid, and public power grid. This is a power generation system that depends on the existing power grid to operate.It is mainly composed of a solar panel and an inverter. The solar panel emits 220V alternating current directly through the inverter and supplies power to the household appliances.       When the solar power generation exceeds the electricity used by the household appliances, the excess electricity is sent to the public. Power grid; and when the solar power generation can not meet the use of household appliances, it will automatically supplement from the grid.This entire process is intelligently controlled and does not require manual operation.       Since this photovoltaic power generation system does not require the use of storage batteries, it saves a lot of costs. In particular, the new grid connection policy that the country has issued has made it clear that householdphotovoltaic power plants can be connected to the grid for free, and excess electricity can also be sold to power companies. From the long-term perspective of investment, based on the 25-year service life of the home photovoltaic power plant , the cost can be recovered in about 6-10 years, and the remaining ten years are earned.       Therefore, if you want to save electricity costs and the power supply is convenient, choose a grid-connected solar power system, which is also the current mainstream method. There is a more detailed introduction on costs and benefits in home photovoltaic power generation.      However, the grid connection also has its shortcomings, that is, when the public grid is powered off, photovoltaic power generation cannot operate. But if the grid-connected inverter is replaced by an intelligent micro-grid inverter (hybrid grid-connected and off-grid inverter), the power station can operate normally.      So, how can we store the electricity generated during the day and use it at night? This requires the addition of controllers and batteries. During the day, the controller stores the power generated by the photovoltaic in the battery, and at night the controller releases the power stored in the battery for lighting.        Second, off-grid PV power station      This is also called an independent photovoltaic power generation stations, is not dependent on the operation of the grid independent power generation system, there are solar panels, storage batteries, charge and discharge controller , an inverter and other components. The electricity generated by the solar panel directly flows into the storage battery and is stored. When it is necessary to supply power to the appliance, the DC current in the storage battery is converted into 220V alternating current through the inverter, which is a repeated cycle of charge and discharge process.       This kind of power generation system is widely used because it is not restricted by the region. It can be installed and used as long as it is exposed to sunlight. Therefore, it is very suitable for remote areas without grids, isolated islands, fishing boats, outdoor breeding bases, etc., and can also be used as a frequent power outage. Emergency power generation equipment in the area.        This kind of system needs to be equipped with a battery, and it occupies 30-50% of the cost of the power generation system. And the service life of the battery is generally 3-5 years, and it has to be replaced later, which increases the cost of use. In terms of economy, it is difficult to promote it on a lar...
June 3 , 2020
Now solar technology is more and more advanced, more and more businesses and families begin to install solar roof has reached to the concept of environmental protection save electricity, but solar panels also no one can succeed in doing cleaning, especially in remote areas, the sand is to cover the surface of solar panels, let it not good photovoltaic power generation, the advantages of this appears more urgent. Do you want the solar panels cleaned?Depending on the location of the photovoltaic project. Generally speaking, often wash in winter, wash less in summer. Keeping the panels clean regularly can greatly improve the efficiency of electricity generation. In order to ensure normal power generation, it is better to clean the solar panels of photovoltaic power stations once or twice a month.Some places how much dust rain, you can consider setting up a cleaning system, manual cleaning or automatic cleaning. Clean by hosing. Be careful not to trample or walk on solar panels while cleaning, not to use metal, hard scrub or abrasive cleaning, not to spray water at high temperatures. Cleaning steps: 1. Observation and analysis; 2. Washing and scrubbing; 3. Flushing and cleaning.1. Observation and analysisFirst check the pollution level of the panel to be cleaned before cleaning. If it's a little bit of pollution -- no particles, just dust. We recommend that you only wash or scrub separately. This not only saves, saves manpower and material resources, but also extends the panel surface to maintain a certain number of years of brightness. Increase its life!2. Rinse and scrubIf the surface is found to have particulate matter when deep cleaning is required or if there is uncertainty as to whether it does not. So you have to rinse first, rinse out the particles and then scrub. Why scrub? Because the washing operation can only go out of the surface of the floating dust in the particles. Particulates in particular. And the effect is very good. But for pollutants that have a certain viscosity or are caused by chemical reactions, they are not very thorough. If they are allowed to grow over time, they will no longer be able to wash away the pollutants.3. Flush and cleanThis is an important step! Don't save yourself the trouble of not rinsing with water after scrubbing. When washing, the small dust, particles and other sundries that are washed off the surface of the panel are washed thoroughly with water. Advantages and disadvantages of manual and machine cleaning:The first: manual cleaning (this is known to be a more widely used method)1. Labor and equipment costsAccording to statistics, one person can clean 100m2 and 1MW pv modules about 6600m2 every day, which takes 66 people and days. According to the calculation of 80 yuan/day per person, the labor cost of 1MW component cleaning is 5,280 yuan. It is estimated that the annual labor cost of 1MW is 190,000 yuan according to the cleaning three times a month.Mop, bucket, this cost is not considered.2. Strengths1) low water consumption, the water consumption of 1MW for each cleaning is about 1 ton.2) low cost.3. Disadvantages1) labor intensive and difficult to manage;2) the difference in staff level leads to the difficulty in controlling the cleaning process and the poor consistency of the cleaning effect;3) low cleaning efficiency.4) wear on component glass, affecting light transmittance and service life. The second: water gun cleaning1. Labor and equipment costsConsidering that one person cleans 300m2 every day, it takes 22 people and days to clean 1MW pv modules. According to the calculation of 80 yuan/day per person, the one-time cleaning cost of 1MW is 1,760 yuan. It is estimated that the annual labor cost of 1MW is 63,000 yuan according to the cleaning three times a month.If the use of mobile water truck, it needs to increase the cost of a driver, water truck. The driver's fee can also be considered at about 63,000 yuan; The average cost of the comprehensive equipment is about 130,000 yuan for 1MW.The installation of water mains will require substantial up-front investment.2. StrengthsGood cleaning effect, relatively clean.3.  Disadvantages1) large water consumption. The water consumption for each cleaning of 1MW is about 10 tons, which is not suitable for water shortage areas;2) some of the water gun pressure is large, will cause component crack;3) mountain power stations that are not suitable for vehicle operation cannot be applied. The third type: spray system1. Labor and equipment costsThe cost of spraying equipment should be increased by 35~50 yuan per square meter, which is equivalent to the initial investment of 0.2~0.3 yuan /W.2. StrengthsNo manual work, fast cleaning speed; Especially suitable for the roof photovoltaic and other manual cleaning inconvenience of the power station.3. Disadvantages1) the cleaning effect is not good;2) the water consumption is large. The water consumption of 1MW for each cleaning is...
May 29 , 2020
Solar street lights make the city more intelligent     Safer, more efficient, smarter and more sustainable development    With the improvement of the quality of human life, the consumption of energy has also increased rapidly, and the earth ’s ecological environment has also deteriorated. Energy shortage and environmental pollution have become problems facing sustainable economic development.    According to statistics of relevant data, lighting consumption accounts for about 20% of global energy consumption. China ’s annual electricity used for lighting is more than 300 billion degrees, of which road lighting accounts for about 30% of total lighting. To achieve sustainable development, new The development of energy and the implementation of the concept of energy saving and emission reduction are particularly important.* The picture is from the Internet    First,Great innovation of traditional street lamps    Among the many energy consumptions, the consumption of lighting electricity is particularly prominent. According to data, lighting electricity accounts for 20% of the global total electricity consumption, but most of the lighting efficiency is very low. As the blood of the city, street lamps play a vital role in the construction of smart cities. With the widespread application of solar technology, the use of solar street lamps has gradually appeared in people's vision.    As a kind of sustainable renewable energy, solar energy has very attractive prospects for development and application, and it can be used wherever it is exposed to sunlight. The effective use of natural energy is the focus of today's new energy technology research. By collecting solar energy and recycling, it can save nearly ⅓ cost of lighting electricity every year. * The picture is from the Internet   Advantages of solar street lights:   1. Convenient installation: It integrates the installation of battery panels, photovoltaic panels, intelligent lamp holders, etc. No need to lay cables, just fix the cement base;   2. Low cost: natural energy is free of electricity charges, and there is no maintenance cost;   3. Security guarantee: It contains anti-theft brackets, which can intelligently regulate and control the current, and the security issues are guaranteed;   4. Long service life: The service life of solar panels is 25 years, the average life of ultra-bright LED lights is more than 50000 hours, and the life of solar batteries can reach 5-7 years.     Second,the secret of the core components of solar street lights    The core device of the solar street lamp is the controller . It is an intelligent charge and discharge device operated by a micro-control chip. Its main function is to control the charge and discharge of the solar battery to the battery. Rely on solar panels to absorb solar energy for energy storage during the day, and control the output current of the battery to the LED light source at night.    The  fourth-generation DM series of solar street lamp controller in SRNE  , has a maximum power tracking (MPPT) , it is to meet for solar street light controller all imagination, not only solved the problem of high electricity costs, but also ease The lack of power supply in remote areas is very popular in regions where power demand cannot be met.* The picture shows the SRNE solar controller DM120-W    SRNE solar controller features:    1. Lithium battery precharge technology . When charging for the first time, the controller will pre-charge the lithium battery. When it is judged that the lithium battery can be charged, the charging current will gradually increase for charging    2. Constant voltage activation technology . If it is judged that the lithium battery is not charged, the controller will activate the lithium battery; if the lithium battery has been unable to activate the charging, it will output a constant voltage to the lithium battery instead of the battery board voltage connected to the lithium battery, causing lithium battery or protection board In a dangerous voltage range;    3. High-precision voltage stabilization technology . Using current and voltage dual-loop control, when the battery panel power changes rapidly (such as cloudy weather), the battery voltage remains stable, there will be no glitches or voltage jitter, to prevent instant high-voltage charging of lithium batteries    4. Voltage and current ripple control technology . Optimize the main circuit design to further reduce the voltage and current ripple during charging, and prevent the overcharge protection of the lithium battery protection board from being triggered by mistak...
May 28 , 2020
'The application field is more extensive'   Solar charge and discharge controllers are indispensable in photovoltaic systems that protect the battery from overcharging and over-discharging, and extend battery life.    It is mainly based on off-grid power generation system, which is light, flexible and convenient to carry. It mainly serves remote mountain areas, pastures, deserts, islands and border posts that are difficult to be covered by the public power grid. It provides basic lighting, television, radio, etc. Life electricity. Note: The picture shows the Poverty Alleviation Project of SRNE Solar Controller in Northwest China     With the advent of the Internet era, the functions of solar controllers are becoming more and more powerful, and are gradually used in various fields such as Bluetooth communication, RV, remote control, and poverty alleviation. Note: SRNE Solar Controller is used in RVs'The control technology is more advanced'   The working parameters of traditional solar controllers have been set, and the power transfer of the solar panel in a constant voltage and constant current mode will not change according to the changes of the surrounding environment, thus causing the battery to never be fully charged. The solar panel It has not been fully played.    In order to solve this problem, SRNE is also constantly exploring and researching on the technical level of the solar controller, from the first generation controller pulse width modulation (PWM) technology to the second generation maximum power point tracking (MPPT) technology The control is more stable, the ability to intelligently regulate changes in the working environment is stronger, and it is more suitable for areas with harsh conditions. Note: SRNE Solar Controller and border defense cooperation   The new generation of solar charge and discharge controller can perform real-time intelligent charge and discharge control according to solar cells, batteries, light sources and other components; according to factors such as seasons, environment, light changes, etc. to determine different working modes of charge and discharge, so as to improve The stability and intelligence of the solar controller are more suitable for areas with harsh conditions.'Home application is more appropriate'    SRNE is committed to using solar charge and discharge controllers in combination with homes, so that people can enjoy the convenience of solar energy at home.    The ML series of solar charge and discharge controllers mainly serve indoor homes. They can not only intelligently regulate the energy absorption state of electric panels according to the environment, but also significantly improve the energy utilization efficiency of photovoltaic systems. When the temperature exceeds the set value of the device, the charging current is linearly decreased with the temperature and the discharge is turned off, thereby reducing the temperature rise of the controller and avoiding high temperature damage of the controller.Note: Schematic diagram of solar controller home          'If you want the solar system to exert its maximum efficiency and value, the choice of a good solar controller is the most critical factor. And SRNE is committed to creating the industry's top controller research and development to meet various applications of the controller. Future development can be Period, I invite you to witness together. '
May 27 , 2020
“Breaking through the epidemic, countries take action”   Overseas accompanied by more serious epidemic, countries take to seal the border, traffic control restrictions, as of March 20, 2020, there were already at least 41 countries in a state of emergency, in order to ease the crisis of economic stagnation, the photovoltaic industry to accelerate States Economic stimulus package.   California    According to the foreign media on March 25 reported affected by the new crown pneumonia epidemic, the government is isolated residents of the home to provide installation and maintenance of optical storage systems and other basic services for the photovoltaic industry development prospects in California in terms of an opportunity.      Australia    In mid-March, the Australian Prime Minister issued an economic response worth A$ 17.6 billion to mitigate the impact of the new coronary pneumonia epidemic. Among them, including solar energy installation projects for commercial and industrial use, tax relief for industrial and commercial and large-scale power station installations.         India    Recently, the General Administration of Customs issued a notice of India, where  From March 21 to 31, 2020 filed or the date April 3, 2020 import generic manifest (delay submitted before the date IGMS ) the declaration, waive late fees, which It is a temporary relief for the Indian photovoltaic industry that depends on imported modules.       Netherlands   On March 20 , the Dutch solar industry associations including the Ministry of Economic Affairs and climate policy extended SDE + large-scale renewable solar energy projects under the incentive program grid period.      “New crown epidemic rescue, adverse control helps South Africa”     In addition to using the photovoltaic industry to restore the economy, more countries will integrate the photovoltaic industry into the rescue of the new coronary pneumonia outbreak.     During the epidemic, South Africa's economy was going down, the power companies were not under heavy load, and there were frequent power quotas, which led to a serious shortage of internal power supply. Medical equipment such as ventilators and blood analyzers in hospitals and treatment areas were unable to perform their intended functions Greatly hinders the control of the patients with new coronary pneumonia.   To this end, South Africa has invested a lot of money in the photovoltaic power generation industry to meet the country's huge demand for electricity, and imported a large number of all-in-one control machines to solve the power supply problem in hospitals and patient treatment areas.        “Complex power problem, integrated solution of inverse control”   In recent years, as the only power converter that is not restricted by time, space, region and other factors, the inverse control integrated machine is the most stable, reliable and low-risk power conversion project in photovoltaic power generation at this stage. Installation can not only meet the huge power demand, but also get low electricity cost, and it has gradually become the first choice for energy conservation and emission reduction among countries.   The industrial-grade design of the inverse control integrated machine can easily deal with harsh environments such as low temperature and humidity, greatly improving the problem of limited development of the enterprise due to the production environment, and giving the industry 360 ° all-round protection against short circuits, over-voltages and under-voltages, and reverse irrigation. Problems for protection.   In addition to industrial applications, the all-in-one reverse control machine can also be installed in residential areas to serve domestic electricity consumption. Without consuming any surrounding resources, it can be used in combination with photovoltaic, generator and power grid to convert solar energy into usable electricity. It is suitable for all kinds of ac and dc household loaders.   ”At present, the epidemic is in the cloud, and we will continue to forge ahead in the future. We will shoulder the social responsibility of enterprises, firmly base ourselves on the market with quality and value, and change the world with green energy technologies.“
Oct 25 , 2019
The 126th Canton FairAdd. : Halls 10.3, No.380 Yuejiang Zhong Road, Haizhu District Guangzhou 510335, ChinaBooth No.: 10.3I05-10.3I06Date: October 15 to 19th ,2019
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