Solar Photovoltaic Project

Solar Photovoltaic Project


Solar photovoltaic project can be found in an extremely wide range of areas, such as industry, building, universe, civil use, dwelling house, hazard prevention and so on. At present, it is mainly applicable to the universe development, oceans, rivers, communication, road management, automobile, transportation, agricultural use, residence, solar power stations and some others. This chapter primarily introduces the applications of solar photovoltaic system. This system is power generation type that utilizes the photovoltaic effect of solar battery to directly convert the solar radiation into electric energy.

To meet the needs of the zero carbon center project of Shanghai World Expo for electricity consumption, we customize the overall performance of solar photovoltaic system. Also, we manage to make this system achieve the optimized effects of both energy saving and environmental protection. The conventional fuel energy is decreasing day by day. Meanwhile, about 2 billion people can not get the normal energy supply all over the world. At this time, people pay attention to the renewable energy sources and hope that this kind of sources can change the energy structure of human beings and also maintain the long term sustainable development. Among these sources, the solar energy depends on its peculiar advantages to become the focus. The solar radiant energy is inexhaustible, cheap and eco friendly. The energy that the solar power requires per minute for arriving to earth can reach up to 11.2×1016kW. If 0.1% solar power on the surface of earth is converted into electric energy and the conversion rate is 5%, the annual electric energy production can reach 5.6×1012kW, which is equal to 40 times as high as the global energy consumption at present.

Working Principles

Under daytime or light condition, the solar cell module can produce the electromotive force. By adoption of both series and parallel connection of this module, the solar cell array is formed, which makes the voltage of array reach the demand of system input voltage. Then, the storage battery is charged by the charge and discharge controller to store the electric energy. At night, the storage battery pack provides the inverter with input electricity. Through the influence of inverter, the direct current can be converted into alternating current to be transported to the power distribution cabinet. The switching function of power distribution cabinet can make the power supply available. The electric discharge of storage battery pack is determined by the controller, which can ensure the normal use of storage battery. In addition, the photovoltaic system comes with both limit load protection and lightning protection devices, so as to protect the system device from overload running and lightning stroke. Also, the safe use of the system device can be ensured.