DC transmission system suitable for ultra-large-scale offshore wind power grid-connected system
With the ultra-large-scale development of offshore wind power,there is an urgent need to improve the utilization rate of transmission corridors and achieve economic and efficient ultra-large-scale offshore wind power grid-connected system.A DC transmission system construction scheme suitable for ultra-large-scale offshore wind power grid-connected system is proposed,and its network structure,voltage level,main wiring method,converter topology and onshore collection station structure of the system are introduced.A suitable AC/DC fault handling strategy for the system is proposed,including system smoothing reactor con-figuration,DC energy consumption device configuration and AC/DC fault handling strategy.A simulation model of the±500 kV/10 000 MW offshore wind power DC transmission system is built in PSCAD/EMT-DC,and AC/DC faults are simulated to verify the feasibility of the proposed scheme and its AC/DC fault handling strategy.
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维普
