Status and trend of distributed photovoltaic power generation

Distributed generation usually refers to the use of distributed resources, smaller capacity, a power generation system arranged in the neighborhood of the user, it is general access to less than 35 kV or lower voltage level of the grid. Unspecified distributed photovoltaic power generation using photovoltaic modules, solar energy is directly converted into electrical energy distributed generation systems.

The most widely distributed photovoltaic power generation system, photovoltaic power generation project is built on the roofs of buildings in cities. The type of the project must be connected to the public grid and supply nearby users together with the public grid. If you do not support public grid distributed system can not guarantee that the user of electricity reliability and power quality.

Distributed solar panels for sale photovoltaic power generation has the following characteristics.

First, the output power is relatively small. Traditional centralized power plant hundreds of hundreds of thousands of kilowatts, or even millions of kilowatts, large-scale applications to improve its economy. The modular design of photovoltaic power generation, and vary in size and capacity of the PV system can be adjusted according to the requirements of the venue.

In general, the capacity of a distributed photovoltaic power generation projects to thousands of kilowatts. Unlike centralized power stations, has little effect on the size of the power generation efficiency of photovoltaic power plants, so a very small impact on its economy, the investment rate of return of the small-scale solar panel price photovoltaic systems and no more than a large low.

Pollution highlight the environmental benefits. Distributed photovoltaic power generation projects in the power generation process, there is no noise, nor will it air and water pollution. However, we need to focus on the coordinated development of distributed PV and the surrounding urban environment, in the use of clean energy, to consider the concerns of the people of the beauty of the urban environment.

The third is to be able to ease the local power shortage to some extent. Distributed photovoltaic power generation during the day and highest output, just the people of this time the demand for electricity.

Distributed solar cell photovoltaic power generation, however, the energy density is relatively low, only about 100 watts per square meter of the distributed power of the photovoltaic power generation system, coupled with the limitations of the building roof area suitable for the installation of photovoltaic components, distributed photovoltaic power generation can not fundamentally solve the power shortage problem.

The PV industry overcapacity long conflict. PV module production in China since 2007, ranked first in the world for five consecutive years. In 2011, China's production of photovoltaic modules is the newly added installed capacity of 10, 90% of the PV modules need to be sold abroad.

The risk of China's photovoltaic industry is heavily dependent on foreign markets in Europe and the United States "dual" exposed. To save the PV industry in China, the country this year continuous introduction of policies to support the development of distributed photovoltaic power generation. In response to the national policy, the State Grid Corporation of release distributed photovoltaic power management approach, and laid a solid foundation to promote the rapid development of distributed generation.

Distributed photovoltaic power generation in the past three years to show explosive growth. Implemented in China from 2009 concession tender, promote the the ground large photovoltaic power station construction. The same year, the start of the "Golden Sun" project and photovoltaic building demonstration projects given distributed photovoltaic power generation system subsidies, and in accordance with the size of the investment scale to determine the amount of subsidies.

The end of 2011, the size of the photovoltaic building demonstration projects have been announced by the State approximately 300,000 kilowatts; "Golden Sun" project has been announced by the size of about 1.17 million kilowatts. The explosive growth of distributed photovoltaic power generation, but the sound associated with the planning, design, construction, management and operation of the standard specification does not cause problems to focus on show.

The plan national publication distributed photovoltaic power generation to reach 10 million kilowatts in 2015. At the same time, clearly encouraged in the eastern part of the construction and building distributed photovoltaic power generation system. Therefore, distributed photovoltaic power generation is an important future