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As the solar PV power is unstable and poor regulation energy, and PV power generation is impacted largely by the weather and geographical, large scale PV power plants (10MW and above) will bring adverse effects to not only grid security, stability and economic operation, but also the grid power quality. As the technology and market development, when the installed capacity of PV power plants compared with the local power grid capacity in a comparable order of magnitude, the effect to grid should not be overlooked. The grid-connected PV power will bring many problems to the existing electric power generation models, grid technologies and economic etc. So it's very important to analyze these problems and propose specific solutions. The article discusses the technology of grid-connected inverter that can participate in power dispatching; low-voltage tolerance of PV grid-connected inverter; PV Inverter group control technology; power management and dispatching automatization of PV power plant.
Date of Conference: 24-28 Oct. 2010