TianJin West Railway Station Roof Solar Power Green Energy Services Surrounding

Reporters learned from relevant departments, has been organized by the City Development and Reform Commission and other multi-sectoral assessment of Tianjin West Railway Station solar photovoltaic power generation project, has now entered the commissioning phase, will soon put into used, the system in Tianjin West Railway Station platform stuff on 36,000 square meters of ceiling the laying of solar panels, green energy will be provided to West station area and the surrounding residents.

It is reported that is also the city first 10 kV-megawatt solar photovoltaic power station. Solar photovoltaic power generation system is divided into off grid solar system and on grid solar system operation in two ways. There are areas in the public power grid, photovoltaic power generation system connected grid operation, eliminating the need for off grid solar power system must be part of the battery, not only greatly reduce the cost, but also higher power generation efficiency and better environmental performance . This formal grid Tianjin West Railway Station to connect grid using operates.


It is assumed that the power project feasibility study and design of the Third Railway Survey and Design Institute experts, the project is for building integrated solar photovoltaic power generation system, photovoltaic tile on the platform canopy, angle and canopy consistent components, the total area reached 36 thousand Project construction scale is about 1.9 MW, including glass, amorphous silicon component design installed capacity are about 1.3 MW, flexible amorphous silicon component design installed capacity are about 0.6 MW. The project is the first 10 thousand megawatts solar photovoltaic power station in Tianjin City, also promote the development and utilization of new energy city landmark project. The project combined with the construction of a building of TianJin West Railway Station, all project components are laying in the West that the platform canopy top, equipment room set basement in the railway station. After the commissioning of the equipment, not only can provide power for the station itself, even through the grid to provide residual power for other places.




Powered by Sarah Hwong, Mar.15,2016

Africa Solar Football Stadium Can Also Power Generation

Facing the renewable energy to provide unlimited possibilities, Africa has been awake, the African Union will invest $200 million for these solar power system in the next ten years. In East Africa, according to the need to buy solar service has gradually become mainstream. In West Africa, everything is still in the experimental stage. More characteristics of the test project is one of a solar football -- apart from solar outside, it can use playing football to generate kinetic energy.

The solar stadium is Located in Lagos, Nigeria's commercial capital of a normal university, is the product of the tripartite cooperation -- energy giant shell, is committed to promote solar energy in Africa of American singer Akon (Akon), and will provide Africa low cost renewable energy power solution set as the important goal of British companies Pavegen.

This is the world's second off grid solar system stadium, the first built in Brazil in 2014. The most interesting place in the stadium is that it is not only use solar energy, also use kinetic energy.

Pavegen technology is to use ball-park "tiles" to capture the players coming from the kinetic energy, for this reason to generate electricity. This energy is sufficient to meet the low voltage system, as like street lamps demand can also store up power for later use.

Not only solar energy generate electricity, can also play-consuming physical solar energy into electrical energy not only generate electricity, but also can play consuming physical energy into electrical energy

Under Ball-park turf there are 100 pieces of these special "tiles", get their energy from the movement players. Total generating capacity of the kinetic energy and solar panel can ensure the community 24 hours street lighting.

More play, pavegen generation technology are more and more, is not difficult to imagine, this technique is actually most suitable for many people of the area, such as schools, sports center and market. Company founder Campbell - Cook (Laurence Kemball-Cook) introduced said, solar power stadium just to show people some possible.” The project tell us, the future energy to how the blend morphology, solar energy and kinetic energy can bring what kind of improvement to our community.” "

Their off grid solar power system stadium approach clearly provides a possibility to solve the power problem in Africa, but to really reach the goal, must also find a way to mass production, and to achieve the balance in terms of cost.



Posted by Sarah Hwong,Feb.26,2016

How Much Is The Distributed Photovoltaic Power Generation The Annual Rate Of Return Of Investment?

Distributed on-off grid solar power system has become the latest current new energy development projects, most people want to know its annual investment rate of return when investment .Here PowerOAK experts said the benefit is very considerable, for the current needs of the community It is one of the most suitable for the purposes of investment projects.

Analysis of the construction cost for photovoltaic power station

On and off grid solar system consists of solar modules, PV inverters, support and boost system has three major components. Solar modules and photovoltaic inverter system costs are mainly upstream battery modules and inverters equipment, boosting system is mainly the main transformer and cable costs, additional construction work and installation of power stations (including mounting bracket) also occupies a very large proportion.

Taking a domestic 10MW photovoltaic power plant project as a reference, the upper reaches of the solar cell component accounted for about 60 %. In the future with the decline in the cost of the upstream industry chain, the main cost will be getting lower and lower; PV inverter system with further the localization and technical progress and cause the capacity of ascension, will make cost more and more lower; At the same time ,the cost of the main transformer and other electrical equipment with the domestic and scale of the effect will be reduced year by year.

Vietnam's First Solar Power System Plant Have Been Constructed

On Aug 29.2015, located in Vietnam's Quang Ngai province a 19.2 megawatt solar power system station to be started building. This is Vietnam's first solar power plant ,which is expected to put into operation to generate electricity in July next year.

The solar power system plant costs approximately $ 36,120,000, will be an annual output of about 28000000 kwh of clean electricity to the main power grid. Solar power plants will be imported from Thailand's solar panels.

Earth encyclopedia noted that nearly a quarter of Vietnam's energy consumption comes from oil, and the remaining 10% is supplied by hydropower, coal accounted for 20%, natural gas accounted for 11%.

So far, Vietnam's solar energy development is relatively slow. The encyclopedia said, by the end of 2014, Vietnam installed capacity of up to 3600 kilowatts, of which are about 15000pcs small PV off grid solar system applications.

Solar off grid power system Maintenance

“How many years can be used for solar off grid power system?”some new users often asked .I think this question should be separated, because one set completed solar power system include three parts: solar panel ,controller and inverter, battery.

Solar panel have a long service life, can reach 20-25 years; the same as controller and inverter can also reach 5-8 years, while the battery is just 3-5 years. As the battery energy storage device, is one of the most important part of solar off grid power system, but also the most vulnerable part , which lifespan directly determines solar power system's service life. Users in the use of solar off grid power system, special attention should be paid to maintenance of storage battery and inverter, these two components are affected by user habits. So should be pay attention to using.

First, battery maintenance

Batteries are experienced to repeat charging and discharging in the using process, the so-called battery lifespan, can be generally considered to be capable of withstanding charge and discharge cycle back number. The cycle back number first is affected by the depth of discharge, the deeper the depth of discharge, the few cycle back number will be. Secondly, if the battery is not timely charge after discharge, greatly reduced cycle times,too. So when in use, try to avoid excessive depth of discharge, if due to poor weather conditions, resulting in insufficient charge, you should use less or stop using. Especially in anticipation of a long rainy weather, must ensure the battery being a certain amount of power. That is to say, if want your off grid solar system have a long service life, need to protect the battery.

Second, inverter maintenance

Inverters have its rated output capacity, different capacity power generation system will configure different output capacity inverter. To power supply for home appliances, we must ensure that the electrical power is less than the inverter rating output capacity. Generally speaking, keep the electrical power is low in 80% of the power inverter is appropriate. For example, a 300W of off solar power system. The configuration of inverter is 1000W output capacity, can only give below the 1000W power electronics use , to make sure electrical power less than 800W will be the most reasonable. If it is inductive load motor, it should be below 200W.

It can be known ,the service life of solar off grid system m is affected by the user's habits, it need to be pay special attention to when using. 

What is the lifespan of off grid solar system kits?

Off grid solar system kit is not simply a machine, but an integrated system which made by the solar panel, storage battery, controller, inverter and other accessories. Each component work coordinated but independent, performance is not the same, service life is also great difference.

The solar panel lifespan is 20-25 years. Which is made from the surface’s tempered glass, anti-aging EVA glue and TPT back plate laminated, can be placed outdoors for a long time, accept light and power generation.

ice life is also great difference.

According to the size of battery , the service life of 40ah is 3-5 years, and more than 50ah is 5-8 years. For life service, there is a great relationship with operation method and working environment . If the off grid solar system is often deep discharged, it will shorten the life cycle, especially has not been timely charged after deep discharge . Besides, storage batteries are self discharge, if not used for a long time, should ensure charge and discharge at least three months.

The controller of off grid solar system kit service life is 8 years. The controller's performance is quite stable, generally not easy to appear the problem.

The inverter of off grid solar system kit service life is 8 years. It has a great relationship with working environment. Long time full load carrying will shorten the service life of inverter, especially over the load of electrical power capacity cause damage. In generally, while the load power is not more than 80% of its rated power. When in using, should pay special attention to the use of electrical appliances.

Overall speaking, Due to the relative independence, each component of the off grid solar generator can be easily maintained, also can be replaced when the problem occured, keeping the system can be used continuously.

How to distinguish the capacity of off-grid solar generator systems

Off-grid solar generator systems are made of solar cell panels, battery , controller and inverter etc. But two most important parts are solar cell panels and inverter. They are interworked together to decide all systems’ function directly what kinds of electric appliance can be loaded. So, when descript the capacity of off-grid solar generator systems, that is according to the solar panels and inverter’s rated output capacity. While you are choosing and purchasing off grid system, must composite these two factors.

The capacity of solar cells is the total wattage of solar panels , it decide that solar generator systems can generate how much electric .For example , 300W solar cell panels, it can be one pieces of 300W panel, also two pieces of 150W panels, that representative under the standard lighting conditions one hour can generate 300WH electronic ( equip to 0.3 degree), which also means 300W solar power systems generate electronic per hour.

The rated of inverter output capacity is the Maximum power which can be output, on behalf of the power to drive a certain electrical. For example, a inverter which rated output power is 1000W, drive the electric appliance power must be less than 1000W. in generally, the electric appliance power can not more than 80% rated power of inverter. If the driven electrical appliances are inductive appliances which instantaneous power are more than  rated power several times , such as electromotor, refrigerator, air-conditioner and washing machine etc, the inverter’rated power must be more than electronic appliance’s about 5-8 times. Therefore, a solar generator kit with 1000W inverter, the driven electronic appliance power must be less 1000W.That is why the home solar power generator system need to pay attention to the type of appliance.

For the set of off-grid solar generator systems capacity, we usually means solar cells panels capacity, sometimes also means the rated output capacity of inverter. A set is equipped with 200W solar panels and 500W inverter power generators, which often called 200W solar power system, or 500W off grid solar system. So, when we purchase , had better to think about these two factors.