Auxiliary Power Supply Schemes of Inverter Chamber in Large-scale Grid-connected Photovoltaic Power Plant
Inverter chamber occupies a pivotal position in large-scale grid-connected photovoltaic (PV) power plant,and its auxiliary power supply scheme direcdy relates to the plant operation stability and investment costs.For the auxiliary power supply to the decentralized inverter chambers,the centralized power supply and distributed power supply can been applied.Through the case study of a 20MWp PV power plant in Inner Mongolia,by comparing the two schemes from technical and economic views,it is concluded that distributed power supply is the better scheme,and subsequently the scheme is optimized.This research results will be greatly valuable to the design of large-scale gridconnected PV power plants.
large-scale grid-connected PV power plantinverter chambercentralized power supplydistributed power supplybox-type substation