The new utilization of solar energy storage, environmental protection and convenience 1-2

In recent years, with the development of technology, solar technology advances, people in the use of solar energy storage made a lot of new ideas.

Solar and wind power is currently the most talked about new energy, solar energy is usually to take advantage of it into electricity, such as solar water heaters There is now a direct use of solar energy in three ways: First, the solar energy into electricity, solar cells is to solar energy into electrical energy; the second is to convert solar energy into chemical energy. Sun through photosynthesis of plants, growing food, fruits provide a rich food for humans; the third is the solar energy into internal energy. Solar water heater is the solar energy into internal energy.

How to do when the battery died in the park dating? Find a chair to sit down, pulled out the power cord can be charged up! Recently, a number of parks in Boston installed an intelligent benches, bench this solar device that can charge electronic devices, while also tracking the surrounding environment, testing air quality, and even changes in the weather to remind you, Indeed combines many functions in one, people in the park dating, activities, do not worry about not charge for electronic equipment.

Outdoor office, people will inevitably encounter case due to lack of electricity laptops affect work. However, if we can outdoor solar energy into the notebook, it will provide a lot of convenience for people. Canadian company created a solar generator laptop, notebook built-in solar battery life of up to 10 hours, charging time is required only 2 hours. When the notebook was open lid state, and will be able to absorb the solar energy into battery power. Greatly reducing the probability of insufficient power supply due to the impact of notebook using.

Have you ever thought about the solar panels on the clothes in storage? Finnish mobile phone maker Nokia on the design of the program. Nokia proposed solar power storage panels can not only be made exceptionally strong, wanton trampling to be implanted in the related components clothing fabric, it can charge the phone all day. To this end, Nokia designed a "solar clothes storage." According to Nokia's vision in the near future, you can put your smartphone in your pocket and enjoy the convenience of a charge at any time.

Solar backup generator can be collected only for mobile phones, laptops and other small devices charging, also can charge for the car and other vehicles. Ford has launched a new solar car, solar car and previous biggest difference is that, this car roof solar cell has a special "condenser system" insufficient in the sun, but also to collect the sun light, fully charged within 1 day.

About off grid solar system

The principle of solar generator photovoltaic system Diagram in the daytime, under the light conditions, solar modules produce a certain amount of force is formed by series-parallel solar cell matrix components, making the square voltage reaches the system input voltage requirements. Through the charge controller to charge the battery, it will be converted from light energy stored up energy.

 

Evening batteries provide input power to the inverter, by the action of the inverter, the direct current into alternating current supplied to the power distribution cabinet, distribution cabinet by the switching action of the power supply. Discharge of the battery pack case is controlled by the controller to ensure that the normal use of the battery. PV power plant system also limited load protection and lightning protection devices to protect the system equipment from lightning and over-load operation, maintenance, use of safety system equipment. Solar energy  → electrical energy → light energy → chemical energy.

 

Part of the photovoltaic system is composed of square solar cells of off grid solar system, battery, charge controller, inverter, AC power distribution counters, automatic solar tracking system, automatic dust removal system, solar modules and other equipment. Its role is to various pieces of equipment: solar cell matrix in the presence of light (either sunlight or other light emitters generate light), the cells absorb light energy, different signs appear accumulated charge across the battery terminals, which produce photovoltage which is the" photovoltaic effect. " In the photovoltaic effect the role of force is generated at both ends of the solar cell, light energy is converted into electrical energy, energy conversion devices. Silicon solar cell is generally divided into single crystal silicon solar cells, polycrystalline silicon solar cells and amorphous silicon solar cell three. Its role is to store the battery pack power when the solar cell matrix issued by the light and are ready to supply the load.

The basic requirement for solar backup power are used:

a. Self-discharge rate

b. Long life

c. Strong deep discharge capability

d. High charging efficiency

e. Low-maintenance or maintenance-free

f. Wide operating temperature range

g. Low prices.

Our current batteries and solar power generation systems supporting the use of lead-acid batteries and are mainly nickel-cadmium batteries. Supporting more than 200Ah lead-acid batteries, generally used fixed or sealed lead-acid industrial batteries, each battery is rated at 2VDC; supporting the following 200Ah lead-acid batteries, generally used in small sealed maintenance-free lead-acid batteries, each only the rated battery voltage is 12VDC. Charge controller is able to automatically prevent battery overcharge and over-discharge device. Because of the battery charge and discharge cycles and the depth is an important factor in the decision to discharge the battery life, so they can control the battery overcharge or over-discharge charge controller is essential equipment. The inverter is a direct current into alternating current equipment. Since solar cells and batteries is a DC power supply and the load when the AC load, an inverter is necessary. The inverter according to operating mode can be divided into stand-alone inverters and grid inverter. Stand-alone inverters for solar power generation systems operate independently, as a separate load. Grid inverter for solar backup generator and network operation. The inverter output waveform can be divided by the square wave inverter and sine wave inverter. Square wave inverter circuit is simple, low cost, but large harmonic components, generally used for several hundred watts and less demanding on the harmonic system. Sine wave inverter high cost, but it can be applied to a variety of loads.

Inverter protection function:

a, Overload protection

b, Short circuit protection

c, Reverse protection

d, Undervoltage protection

e, Overvoltage protection

f, overheating protection

AC power distribution cabinet which is on standby inverter switching a major role in solar power kit off , to ensure the normal power supply system, as well as measurement of electrical energy on the line.

Who Restricting the market of Chinese PV application? 3-3

Policy measures to support PV unsound

The high cost of solar generator and grid has been a difficult two problems hinder the development of the domestic PV market. So while the Government through the development of price subsidies to get rid of the high price of photovoltaic power generation "bottleneck" to shorten the payback period investors; on the other hand to support through the introduction of photovoltaic power generation and network and network policies. Development and implementation of national policy determines the size of the PV market. At present, China's PV support policies are not perfect, there are some problems in the operation mechanism.

Supporting policies is not perfect one reflected on the support of distributed applications in photovoltaic electricity subsidies based on the current investment subsidies have not yet introduced, the lack of household, commercial and industrial companies to install photovoltaic systems initial investment subsidy, soft loan deals or tax breaks, and other related policies.

Due to the high initial investment of photovoltaic solar energy storage, based on China's current per capita income levels, only to reduce the initial investment in order to mobilize their personal passion for installation, while China's current policy does not address the photovoltaic. Supporting policies is not perfect and is also reflected in the absence of the introduction of network policies for large-scale photovoltaic power plants and large-scale photovoltaic power plants net flow is still cumbersome and lengthy.

State Grid Corporation in October 2012 26 issued a "do a good job of distributed photovoltaic power generation and network service Work", the process is simplified and the network 6 megawatts of distributed PV power plant, theoretically solve the distributed photovoltaic grid problems. And subsidies, as this policy is also only "opinions", the lack of laws and regulations to protect their execution.

Look subsidies, how to ensure that one country subsidy funding. PV subsidies, mainly from renewable energy tariff surcharge, state funding accounted for a smaller proportion. 15 July 2013, the State Council issued the "Opinions on promoting the healthy development of off grid solar system," he pointed out that by 2015 China's total installed capacity of PV to reach 35 million kilowatts (35GW) above. By the end of 2013, China's cumulative installed PV about 18.1GW, generating 110 billion a year to 120 billion degrees, according to subsidize 0.42 yuan / kWh basis, the corresponding need more than 400 billion yuan of subsidies. If the completion of the annual installed capacity of 35GW generation can reach 2000-2500 million degrees, the annual subsidy needed to 840w ~ 1050 yuan.

1.5 cents per kilowatt of renewable energy tariff additional criteria from 25 September 2013 in accordance with the beginning of the implementation of the (previously 0.8) and 2013 to calculate the whole society electricity consumption 5.3223 trillion kwh, electricity additional income was only 800 billion. It should be noted that the tariff surcharge levied not only established as PV, is renewable energy, count wind, biomass, etc., really very little money left for the photovoltaic industry. And additional tariff only except residents and other agricultural production of electricity levy. Current photovoltaic subsidies have a gap, 2015, the funding gap will be even greater.

The second is how to ensure that government subsidies fair, in full, on time and persistence paid. Subsidy arrears in the country has built large-scale ground photovoltaic power plants are prevalent, it can be said to have been the origin of a long time. Large-scale ground photovoltaic power station construction and operation need to take a lot of money, subsidies are not in place, the power plant to sell electricity grid can only get 0.4 to 0.5 yuan desulfurization sales price, the proceeds to repay even the interest on the loan operation and maintenance of power plants are often mouth not enough. Investors not only through the construction of photovoltaic power plants can’t be profitable, but also a loss is likely to occur. This situation will undoubtedly affect the enthusiasm of the other investors in the construction of solar backup generator plants.

In addition, the implementation of the results and net policies and subsidies can also be seen reflected in the 2013 case of distributed PV installed capacity in 2013, China's installed capacity of distributed PV 3GW, most of which come from 2012, had been approved the "Golden sun" demonstration project, based on real electricity subsidy model projects a few hundred megawatts, and none of these big projects and networks.

Technical standards and certification system is not perfect

Photovoltaic power generation projects with huge investment, the project is completed long running time, harsh operating environment, and the project operation and production and life are closely related features. Therefore, to ensure that quality is the key photovoltaic power projects, and is a prerequisite for photovoltaic applications PV industry development. Ensure quality PV products and photovoltaic power plant safe and stable operation of the need to improve product standards and strict certification system. The lack of standards and certification of photovoltaic products easily lead to uneven quality, unstable system operation, and low power generation efficiency, thereby affecting the reputation of the industry, the public investment in the fight against the construction of photovoltaic power generation project enthusiasm, and ultimately impede the orderly development of the PV market.

All along, China's photovoltaic industry chain are facing the problem of lack of standards, from the PV original, specification and auxiliary materials to the photovoltaic cell, product performance testing components, and power station construction application terminal, etc., are in part or all of the missing state standards . Meanwhile, China's current portable solar generator standards already lack the practical implementation of mandatory authority, many of the standard has not been implemented. In addition, subject to the limits of the annual publication of the number of national standards published by the speed it is difficult to meet the market demand for rapid development of the industry in some areas led to the existence of standards do not apply or do not scale to follow the case, the urgent need to strengthen the standards system revision.

Compulsory certification is international practice, strict certification system can provide photovoltaic applications escort, but China has not yet officially launched the field of photovoltaic-related certification, already insufficient to carry out certification authority. Resulting in many domestic enterprises need to get the foreign certification of photovoltaic products, increased product costs. The lack of accreditation of photovoltaic products difficult to obtain market acceptance, sales limited.

At present, China PV application market development is still in its infancy, the future with the expansion of market size, lack of standards and certification restraining effect on market development will become more apparent.

Lack of photovoltaic professionals

Although China has opened several universities Photovoltaic, relevant research institutions are also the training of professionals PV, but because of the photovoltaic industry is the emerging technology-intensive industries, the development time is short, fast growth, the lack of industry and related in-depth understanding of discipline, training programs, etc. imperfect conditions and teachers, resulting in the quantity and quality of talent photovoltaic research and development, design, production, construction and other aspects difficult to meet the needs of China's photovoltaic enterprises. Lack of talent makes a considerable number of photovoltaic solar electric generator enterprises lack independent innovation capability and autonomous technology, the overall R & D and mass production technology and international advanced level there is a certain gap. Some enterprises can only dig everywhere, additional human resources costs.

On the other hand, the lack of appropriate vocational schools, technical schools and vocational skills training related to photovoltaic power generation, the current number of employees and professional quality photovoltaic power generation is difficult to guarantee. And for the ordinary people of publicity, education, training popularize basic knowledge of photovoltaic power generation has not yet carried out.

Who Restricting the market of Chinese PV application? 1-3

When the photovoltaic industry gradually fiery tide currently, every photovoltaic people should calm down, to think in the end what is restricting the development of China PV industry? How should we get rid of the shackles of industry, market checks and balances to break again to lead the Chinese PV industry go the stable development of the world?

The High cost of solar generator

Another effect of the low price of distributed PV application market to expand state support policy is simple. China's current policy of limited tariff photovoltaic mode, user self-occupied part of the government to give a certain amount of subsidies, balance access some high-priced acquisitions. Expand the market heavily dependent on state subsidies, not by spontaneous market forces. Some US, and European countries due to the mouth of the residential electricity prices high, you can use a range of diverse and innovative support policies, so that the civilian Photovoltaic market is growing rapidly. The same policy in our country due to the low price of residential electricity can’t be generalized.

Because of China's PV industry overcapacity, the exportation was exported by Europe market disruption, technological advances and so on, in recent years the cost of photovoltaic solar backup generator construction has shown a sharp decline (currently the initial investment cost of photovoltaic power generation is about 10,000 yuan/kilowatt photovoltaic power generation costs about 0.8 yuan/kWh, the cost was low. although already close to the limit and is based on the photovoltaic industry across the board over the loss, but in terms of cost of backup power generator, photovoltaic power generation and other new forms of energy and hydropower, nuclear power and wind power and other phase than no advantage at all, with conventional thermal power comparison is far more in terms of initial investment cost, but also lower than the only nuclear power. Therefore, the photovoltaic power generation is not getting widely used in our lives, in the final analysis is due to the high cost.

High initial investment cost of photovoltaic solar energy storage, beyond the capacity of most families, restraining effect on the promotion of distributed PV in particular. Household electricity to three of, for example, to build a power generation capacity of eight kilowatts of photovoltaic power plant is enough common electrical outlet, the initial investment cost is 80,000yuan. If the current of a family's annual electricity costs 3000yuan terms, 8 kilowatts of photovoltaic power plants of self-occupied for at least 20 years to recover the cost, if coupled with subsidies on 0.42 yuan/watt, the actual recovery period is also more than 10 years, and this calculation based on the ideal state and does not take into account the maintenance and parts replacement details. High investment and long payback period so that ordinary Chinese people certainly do not want a one-time tariff for their ten years of pay.

Other because of residential electricity tariff low

The current average price of residential electricity consumption of 0.57yuan/kWh low, so that people do not have the enthusiasm of distributed PV systems. Compared with photovoltaic grid solar system, power grid residents to purchase much more cost effective.

The residential electricity prices in developed market economy countries like Europe and USA with the recent two or three decades of rising solar generator energy prices gradually rise. Such as the UK in 2013 residential electricity prices of 21.2 cents/kWh, and electricity prices compared to the year 2000, up more than tripled. America, too, the 2000 national residential electricity prices an average of 8.2 cents/kWh, by 2013 the average price had risen to 18 cents/kWh, or mucho larger. In contrast, China's price in 2000--2013 years, only 0.335 yuan per unit rose to 0.57 yuan.

The ultimate goal is the development of distributed photovoltaic households. And because the population is below the price of both commercial and industrial electricity prices, also lower than the average price, making our country is difficult to achieve a breakthrough in the civilian aspects of the PV market. And our difference is that foreign residents generally industrial electricity price of 1.5 times to 2 times, residents distributed photovoltaic installation is very active in these countries to develop civilian PV market is much easier than in China.

Low price is the promotion of distributed PV fatal weakness, because the competitiveness of photovoltaic backup power generator projects are always based on existing tariffs as a comparison basis, the lower the price of photovoltaic power generation becomes more expensive, more distant from affordable Internet access, which is also the same reason the cost of photovoltaic solar power kit off grid in different countries to promote the big difficulty is not the same.

Another effect of the low price of distributed PV application market to expand state support policy is simple. China's current policy of limited tariff photovoltaic mode, user self-occupied part of the government to give a certain amount of subsidies, balance access some high-priced acquisitions. Expand the market heavily dependent on state subsidies, not by spontaneous market forces. Some US, and European countries due to the mouth of the residential electricity prices high, you can use a range of diverse and innovative support policies, so that the civilian Photovoltaic market is growing rapidly. The same policy in our country due to the low price of residential electricity can’t be generalized.

Distributed PV investors face many obstacles

According to the China National Development and Reform Commission in August 2013 30 issued a “Notice of price leverage role in promoting the healthy development of photovoltaic industry" provides the standard price subsidies distributed photovoltaic solar energy storage project was 0.42yuan/kWh subsidy standard implementation deadline in principle 20 years. Click to calculate the amount of subsidies, ROI theoretically most provinces distributed photovoltaic power plants can reach 12% to 15% return on investment is very impressive. But the investment enthusiasm of solar generator investors has not been inspired, very few number of distributed PV power plant construction, didn’t see signs of large-scale development. One reason is that a large amount of investment distributed power station, returns to investors insecurity, faces many obstacles to investment.

Since the residential solar electric generator tariff is low, our focus on the development of distributed photovoltaic systems business-intensive regions. At present, China industrial and commercial electricity tariff of about 1 to 1.5 yuan/kwh, the development of distributed PV systems in these areas, although a good deal, but faced with the following question. First of all, in 25 years of operating PV system cycle power stations can’t be determined by how many companies sell, how much to sell the grid. Power companies sell than to sell cost-effective, but the power grid to sell than to sell enterprise security, earnings power plant can’t be determined.

Enhance the solar generator capacity of photovoltaic power plants, I have a coup

Renewable energy is an important energy resource in meeting energy needs, change the energy structure, reduce environmental pollution and promote economic development plays an important role.

As one of the main representatives of renewable energy, solar generator photovoltaic power is by far the most ideal human new energy, renewable resources is the best, clean, low-carbon, environmental protection, no noise pollution and light pollution are characterized by other solar energy storage sources can’t match is an important part of the restructuring of the energy, the fight against global warming and haze powerful "weapon". PV policy from the "Golden Sun" to the distributed along the way, power stations of solar backup power has been a key measure of the value of energy saving, and investment income is directly linked to the value. How to get the best effect power generation has become the focus of everyone's attention.

PV solar generator operation and maintenance (O & M for short) is to ensure that the most direct and effective way of generating capacity, thereby shortening back this time and improve revenue generation. And many users never clean los solar panel comprehensive also not aware of its importance. Therefore, the surface area of the solar panels thick dust hinder part of the sunlight into the cells, reducing the generating capacity.

And hire some professional solar storage energy operation and maintenance service personnel about a week to complete the cleaning work 6400 assembly. After cleaning the glow component life, bright as new, with blue sky and reflect the same color. All panels after thorough cleansing, photovoltaic solar power backup generator  plant is expected to increase by about 10%, bringing environmental and economic benefits can’t be ignored!

Finally, it summarizes the considerations for solar backup generator panels cleaning of photovoltaic power plants:

1.    Must be cleaned to work under irradiation intensity is weak, it is recommended before and after sunrise or sunset period;

2.    Cleaning personnel should wear personal protective equipment, such as rubber gloves, to prevent accidents;

3.    You must use a neutral cleaning solution, do not use aggressive solvents or wipe the battery with a hard object;

4.    It’s strictly prohibited in high winds, heavy rain washing.

Solar generator electricity is green low-carbon energy

Photovoltaic solar backup generator has significant energy, environmental and economic benefits, is one of the best green energy, has become a common concern of all countries of the world focus on the development of technology and industry. Solar energy storage resources is extremely rich, widely distributed, and convenient. Develop photovoltaic power generation, including renewable energy strategic emerging industries, accelerate the adjustment of energy structure, the establishment of "independent, self-reliance, clean and sustainable" energy system, is our response to the dual problem of fossil energy shortage and air pollution fundamental way.

Solar generator electricity is green low-carbon energy

US National Renewable Energy Laboratory NREL, based on 13 different types of polycrystalline silicon photovoltaic system - Emissions (Europe 2005 2006 manufacturing level) of the full life cycle carbon dioxide, in the amount of solar solar backup power radiation per year to 1700 kwh/square meter, the system life 30 years, module efficiency of 13.2% -14.0%, the system power generation efficiency of 75% -80%, the average value obtained for each kilowatt generated within the polycrystalline silicon photovoltaic system life cycle carbon dioxide was 45g, the average value per kilowatt generated in thermal coal as a raw material for the whole life cycle of 1000 grams of carbon dioxide.

According to the World Wildlife Fund (WWF) statistics, in China's average sunshine condition, install one kilowatt photovoltaic system, can be made 1200 a year of electricity, can reduce coal (coal) uses about 400 kilograms, reducing carbon dioxide emissions about one ton, figuratively speaking, to install the equivalent of one square meter of solar photovoltaic modules of about 100 square meters of afforestation.

Photovoltaic solar electric generator generation system is running without fuel and water

As long as the place to get the light, you can use solar photovoltaic systems, unchecked altitude, geographical and other factors, the wide range of applications.

Simple photovoltaic system construction, operation and maintenance operations

Simple solar cell module structure, small size and light weight, easy to transport; easy installation of the construction, demolition migration; capacity according to different systems, modular installation, and easy to expand generation capacity at any time, greatly shorten the construction period. PV systems no mechanical moving parts, no noise, and more importantly, easy operation and maintenance, system reliability is improved operational stability. With the development of automatic control technology, the photovoltaic grid solar system can run unattended, operation and maintenance costs are significantly reduced.

PV system performance, stability, reliability, long life

The world generally believe that the life of crystalline silicon photovoltaic modules is 25-30 years. Here, the 25-year life of the component, refers to the power module warranty period, namely 25 years after the power components not less than 80% of the initial power, but does not mean completely without power components with little or electricity. Indeed PV module efficiency decay is a slow process, so more time can PV modules provide clean electricity within 30 years, even as humans continue.

Photovoltaic solar generator is to improve the climate bring positive energy bureau

PV systems in the power generation process itself, not only will not adversely impact on the surrounding environment, it can also play a game to the micro-climate improvement. Cover PV modules, PV power plant makes the venue shallow soil temperature remains stable, and the soil temperature is lower than the power off, so that reduce soil moisture evaporation, soil moisture has improved, near-surface air temperature difference between day and night narrow, these air, soil temperature and humidity conditions combined, help conserve soil moisture and nourish the microbes and vegetation, to improve the local ecological environment of photovoltaic power plants play a positive role.

How the new lithium solar energy storage technology to enhance the efficiency of the PV system

University of Southampton and REA Psystems collaborative research discovered a new type of lithium battery as the solar energy storage device PV systems, solar energy storage efficiency can be increased to 95%, can greatly reduce the cost of solar power.

Most current PV system also uses lead-acid batteries as the solar backup generator device, there is far, lithium iron phosphate battery replacement can give full play to its advantages, including improved storage efficiency, long life, low unit cost, and so on. The type lithium is used as an solar energy storage device, the energy efficiency can be increased to 95%, far more than 80% of the traditional lead-acid batteries, and has 1,600 charge-discharge life.

Lead-acid battery of solar generator energy storage device is used in most traditional photovoltaic systems. However, as the energy storage device, lithium batteries, especially the LiFePO4 batteries we use, have more favorable characteristics.

Collect these data, it is necessary to connect the lithium iron phosphate battery and off grid Solar System，PV systems installed in the building at the University of use provided by the REA Psystems specially designed battery management system. someone added, "Research shows that 95% of the lithium battery energy efficiency, and the most commonly used lead-acid batteries, only about 80 percent, while the lithium battery lighter and has a longer use than lead-acid batteries life. charge and discharge times can reach 1600 cycles, which means they do not need regular replacement.” 

Although before commercial photovoltaic systems, batteries need further testing. But studies have shown that, LiFePO4 battery is expected to improve the efficiency of solar power kit off grid generation system, and helps reduce installation and maintenance costs.

For a variety of energy sources (renewable or non-renewable), solar energy storage devices, such as batteries, plays an important role in terms of energy solar backup generator use, with the traditional lead compared acid batteries, LiFePO4 battery has a higher efficiency, longer life, lighter weight, cost less. we expect to be able to see such batteries are widely used in photovoltaic systems and other renewable energy off grid solar systems.

The attention of safety knowledge for installation of photovoltaic solar generator

"Safety " is the basic principle firstly. In order to successfully complete the photovoltaic solar generator installation tasks, you must something as the following.

1. Equipment manufacturers comply with the provisions of installation specifications and the necessary application codes and standards.

2. Prepared completamente

Full preparatory work for construction in remote areas is particularly important, we must ensure that all the materials needed to build power plants, equipment, tools, installation drawings and information brought to the scene. Site for a variety of emergency situations that may arise must have the appropriate preparations. Site construction leaders and key personnel should be familiar with the venue, transportation, topography, climate, and human environment, should know how to injured people evacuated as soon as possible. Be sure to prepare a communication tool with the outside world. Bring enough clothes, food and temporary accommodation appliance, which in the wild is very necessary temporary overnight.

3. Reasonable arrangements and strengthen coordination

The installation site of solar generator must be given ample time to work aside to ask, which is particularly important in inaccessible remote areas. Only in this way can calmly work site staff, to avoid in order to finish the work, the phenomenon appears hectic at work and accidents.

Construction project can not be completed on time may cause a lot of problems, such as increased costs. Inconvenience to local users, but also to the installers trouble. To install work smoothly requires a reasonable time, at the same time pay attention to the coordination of the progress of work solar backup generator . Whenever the next step before installation, all the necessary preparatory work must be done according to the requirements.

4. Prepare construction drawings and technical documents

Site preparation and placement of equipment must be accountable to all construction workers clear the site of all buildings, foundations, cable trenches, pipes, cable laying paths and walls and so must be accurately marked on construction plans and technical detailed log file.

5. Enhanced environmental awareness, the use of new materials and new technology

Stand-alone PV power plant built in remote areas generally untapped, near agricultural areas or water. Unreasonable installation may result in water pollution and damage to crops, livestock and even affect wildlife survival. The installer of off grid solar system should have the basic knowledge and understanding of environmental protection of certain hazardous substances. Note the use of new materials and new technology emerging as an alternative to harmful traditional materials and old craft.

All the people must remember that, in the power engineering construction, there is always the potential danger and insecurity, time can’t be taken lightly. Throughout the installation of photovoltaic solar energy storage and the installation is completed to ask the inspection process, we must carefully check each part of the system to ensure the safe operation of power plants and the safety of nearby residents or pedestrians construction workers.

Stand-alone photovoltaic systems are often located in remote areas, so the design and installation work will encounter difficulties such as transport, installation materials and other aspects. When designers or installers in planning the installation of photovoltaic systems in remote, should be planned and ready to install the tools and materials needed. It may not have specialized electrical shop near the remote installation site, so well-planned pre-construction is necessary. Due to the specific circumstances of each construction site is different, the installer should first examine the site before construction, detailed study should be required to list the tools and materials of off grid solar system.

Notice of the using solar generator energy

Solar generator photovoltaic cell matrix of light surface should be kept clean, such as lighting the surface of dust or other dirt falling objects, should be washed with water, and then clean gauze to gently wipe away traces of water, do not wipe with a hard object or rinse with corrosive solvents.

Mounted frame, junction box and the cleaning process

After module lamination is completed, loaded into the frame, junction box and module loading washing step. Install border, is to give a good assembly is mounted on a laminated aluminum frame, increase the mechanical strength of the components, further sealing photovoltaic modules de solar generator energy, extended battery life, and the battery pack leads to positive and negative busbars lead solder and junction box the corresponding terminal pin or plug welding, assembly and then cleaned.

The module junction box of solar backup generator should be checked regularly to prevent weathering. Package should be inspected once every quarter and wiring connectors each of the solar cell module, if there is a plastic package water, battery discoloration and loose fitting, off-line, corrosion, etc., should be cleared up.

corrosive solvents.

1.Consider installing an array of solar panels required azimuth, tilt angle.

2.Between the panels need to avoid blocking. It includes surrounding buildings (poles, house eaves, etc.)

3.Stent placement stability and robustness (considering the local meteorological data, such as hours of sunshine, severe weather, storm, etc.)

4.Trace distance and combiner box location. Try to walk the line and the average distance is short

5.Related accessories to meet the system requirements (such as terminals, with wire diameter, etc.)

6.Terminals should be strong, to prevent false or disconnection

7.Battery terminals should firmly (do not be short-circuited) Note polarity installation, to avoid explosions and fires    

These are the issues when installing solar energy storage must be noted that in order to achieve security and long life.

Portable Solar generator photovoltaic energy storage system introduced

Portable solar generator photovoltaic energy storage system introduced

In addition to the space station, all other PV systems are subject to sunshine during the day and did not affect the evening sunshine. And we want to use electrical appliances, day or night, we must choose to solve this problem portable solar energy storage battery through the inverter function convert.

Storage and management of electrical energy in photovoltaic system plays a crucial role in the photovoltaic power generation system has been mindful of the solar energy storage device is commonly used lead-acid batteries, but its short life cycle, low power density, volume and other maintenance disadvantages and costs are high, due to the unstable energy, space and other characteristics of large battery can cause premature failure or loss of capacity, and further increase the cost of solar backup generator.

Lead-acid battery charging There are many ways, including the constant current charging, constant voltage charging, constant current limiting charging, charging two stage, three-stage charging, fast charging, intelligent charging, equalizing charging methods. PV systems taking into account the energy, limited investment costs and charging power of special features, and therefore in charge control PV systems has its particularity.

1. The constant current charging is performed with a constant current charging, during charging as the battery voltage changes the current to be adjusted so as to be constant. This method is particularly suitable for the battery of solar generator has a plurality of batteries in series for charging, the battery capacity to make backward easy to be restored, the best time for small current charging mode.

2.The constant voltage charging means at a constant voltage to charge the battery. Therefore, in the initial charge due to low battery voltage, charge current is large, but gradually increased as the battery voltage, current decreases. In the late charge only a small current through the charging process so that it does not have to adjust the current. Constant current charging relatively speaking, this method of charging current is automatically reduced, so little analysis of gas charging process, the charging time is short, low energy consumption and charging efficiency up to 80%, as the charging voltage selector appropriate, within 8 hours charging is completed. Backup power generator capacity to make backward easy to be restored, the best time for small current charging mode.

3.The three-stage charging:

A) constant current charging phase, the charger current is kept constant, a rapid increase in filling power, the battery voltage rises

B) constant voltage charging phase, the charger voltage is kept constant, charge into the electricity continues to increase, the battery voltage to rise slowly, the charge current drops

C) the battery is full, the charge current drops below the float conversion current, the charger voltage is reduced to the float voltage

Charge controller for photovoltaic array output power is controlled based on the actual state of the system, in a certain way back level power supply, including MPPT mode, current limiting mode and constant voltage mode. System configuration certain capacity supercapacitor, except as an energy reserve means, but also on the output of photovoltaic energy for filtering, optimized battery working environment (including the charge and discharge currents). Battery directly connected load, the main energy reserves as a grid solar system device. Parallel controller is super capacitor energy transfer to the battery control link, control its purpose is to make the battery work in an ideal state and the charge-discharge cycles at least.

Portable solar generator for Reduce the cost of air conditioning

Portable solar generator

for Reduce the cost of air conditioning

As we all know in this global warming, the temperature continues to rise, so more and more widespread use of air conditioning, the cost spend on the power level of the air conditioning, for example the rated power is 3.5KW, which is consumption of 3.5KWH every hour so the cost of electricity is also increasing. How does every family reduce the spending?

Now I come to introduce a reduction in the cost of air conditioning use little helper. Portable solar generator. But how to work and how to help us? Please check the detail as below.

Photoelectric conversion by solar panels to generate current and voltage. The solar backup generator energy stored by the controller to the battery, connect the output port can supply air conditioning or other appliances. Such as mobile phones, LED lighting, refrigerator and so on.

Portable solar generator have become the helper excellent necessary for each our family, not only can reduce our cost of living is also fully embodies what we are advocating green life, earth our common home offer a best to help.