RESEARCH ON KEY ISSUES OF FULL DC TRANSMISSION SCHEME FOR LARGE-SCALE PHOTOVOLTAIC POWER STATIONS
This paper studies the full DC transmission scheme of 118 MWp photovoltaic power station in Xiaoyangshan Bodaozui island of Zhoushan,Zhejiang Province.The construction principle of the full DC transmission system is introduced,and the key technical issues such as the topology selection,the grounding method,and the DC voltage control are clarified.The composition principle of DC-DC converters at all levels is specified.A corresponding simulation system is built on the PSCAD/EMTDC platform and the time-domain simulation verifies the feasibility of the proposed full DC transmission scheme of 118 MWp photovoltaic power station in Xiaoyangshan Bodaozui island.
photovoltaic powerhigh voltage DC transmissionDC-DC convertersgrounding methodDC voltage control
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