Multi-owner far-reaching sea wind power centralized delivery of land converter station power optimization design scheme

Under the dual carbon target, the development of offshore wind power has been vigorously promoted. In order to save costs, there will be a large number of land-based converter stations jointly built by multiple owners to concentrate the transmission of offshore wind power in the future. Different from the situation of a single owner, when multiple owners jointly build, the construction cost, construction period, electricity cost, electricity price, etc. of the station electricity system of the onshore converter station need to be reasonably shared. In response to this characteristic, this paper analyzes the four topological structures from four aspects: reliability, initial investment, measurement difficulty and applicable scenarios, and puts forward the technical and economic evaluation results of each scheme. When one or more transformers are installed in each unit, it is recommended to use a station power topology structure of a single 500kV station transformer+single unit connection or two station transformers per unit.