Evaluation of Clustered PV Systems Output Control

The world´s growing energy demand raises two challenges: climate change and energy security, and developing renewable energy has become common choice of the world to deal with the challenges. Solar energy is the largest available energy resource on earth so far, photovoltaic system has advantages of flexible installation, easy maintenance, environment friendly, so it receives attention of the world, and grid-connected PV generation system develops rapidly. Affected by solar radiation and other factors, power output of PV generation system is fluctuant and intermittent, network operation of large-scale PV generation system will affect the security, stability and economic operation of power system. The target of this paper is to solve key points such as restriction of PV system output.