Over the past two years, large-scale investment and construction of the desert in the western region of large-scale photovoltaic power plant system, it is learned that the grid was only reached more than 50% of the points and can not be full of hair, that is centralized large-scale ground station network bottlenecks encountered, even in accordance with national Twelve Five "UHV grid layout plan for 2013-2015 western photovoltaic energy output will be completely resolved, but the right to decide the number of photovoltaic energy Internet is still in the hands of others, the photovoltaic live and good or bad still have to look at the others face?
To relieve excess capacity, it is necessary to start the domestic PV application market to get rid of the dilemma of excessive dependence on international markets, urgent and feasible policy is: PV mppt solar charge controller community to get rid of "the development of photovoltaic grid Huashan road only thinking set" Otherwise, only the cocoon passively waiting for someone else to help relief-type, but this is not the obligation of the existing power grid. Although the distributed system has been put on the table, but the share of domestic photovoltaic system installed large-scale power plant or ground-based. It is understood that the new installed capacity in 2012, the large-scale desert power plant installed accounted for 73.4%, much higher than 20.67% of the building integrated photovoltaic systems.
The most mature in photovoltaic flexible solar panels applications and market development in
whether it is new installed capacity and cumulative installed capacity to take
advantage of distributed applications. In the new installed capacity,
distributed systems of these countries accounted for more than 60%, a higher
proportion of the cumulative installed capacity of distributed systems. The
market in the United States
and is similar to the European market are developing the use of roof-based
distributed PV as the main direction. Japan
The main purpose of large ground-based power plant construction in
will continue to be popular, self-consumed ratio and pulled up the local GDP is
neither possible grid bottlenecks will remain the same, China Power Grid by
serious pollution, power quality is difficult to guarantee if incorporated into
a garbage power of solar photovoltaic energy, the consequences can be imagined.
In order to get rid of the dilemma of the kinds of programs is hope where
off-grid, micro-grid solution. China
The most important feature of photovoltaic solar panels cost off-grid solutions have in its energy storage device capable of storing excess energy, in order to achieve grid can successfully exploited the goal of photovoltaic power. In addition, off-grid system can also achieve a joint supply. Photovoltaic power generation micro-grid photovoltaic modules, photovoltaic micro-grid inverter, energy storage devices and micro-network operation and management device composed of a distributed electricity generation and supply system, not only of the area covered by normal run off-grid power supply, but also in the external distribution network anomalies.
Distributed photovoltaic applications objectively make electricity directly in the user side of consumptive possible to adjust or add energy storage device to be digested, the remaining power only within the distribution network, far away from the western desert transmission more economical, especially qualify as complementary energy positioning photovoltaic energy properties. Micro-distributed photovoltaic applications of electricity subsidies for off-grid mode, the light receiving area, more conducive to efficient photovoltaic products came out as soon as possible. Distributed photovoltaic power generation system of electricity subsidies mode, back to the profit generating capacity is closely related to, forcing people to pursue a unit area of high power generation and cost-effective power generation system.
Of course, the vicinity of the distributed system (BOS) than the cost of a centralized project much higher BOS costs can be reduced due to the highly efficient products, and therefore a high conversion efficiency of photovoltaic products in the case of equal installed capacity by reducing the amount of components to achieve savings in power BOS costs, and the economic benefits of the BOS cost savings will be more significant than the centralized power plant distributed PV systems, allowing efficient products more competitive in the distributed PV systems.
The user side and network projects off-grid PV projects more economical, more proactive, spontaneous own use business model and will certainly become the mainstream of the photovoltaic applications. Recently, Sharp announced the official to enter the domestic battery market sale at two fixed 4.8 kWh capacity of 2.4 kWh capacity lithium-ion batteries. It is said that every day the product repeatedly charge and discharge can be used continuously for more than 20 years, the capacity of 4.8 kWh battery while powered refrigerator, television and computer use every day to 14 hours of life under three days. Of course, hundreds of thousands of yuan price also makes people timid, but today phone is from the original astronomical
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