Can super large-scale offshore wind clusters be integrated into the onshore power grid?
The integration of super large-scale offshore wind clusters into the onshore power grid brings challenges for the flexibility of the transmission network.
How to choose a transmission method for offshore wind farms?
The choice of transmission method is influenced by transmission distance and transmission capacity. The applicable transmission method for wind farms can be obtained by constructing a life-cycle cost model for the grid-connection system of offshore wind farms.
How many offshore wind clusters will be integrated into a PCC?
Based on the accommodation capacity of the two levels, the offshore wind clusters with a capacity of MW will be integrated into a 220 kV PCC. The remaining capacity will be divided into two portions of MW each, to be integrated into two 500 kV PCCs.
What is the proposed model for offshore wind power?
The proposed model consists of a collaborative planning model for the PCCs siting and the transmission network expansion and an optimal power flow model for operation. The siting of PCCs for offshore wind power affects the node flexibility balance between supply and requirement.
How to optimize the planning of offshore wind farm cluster grid-connection system?
(1) The method is able to optimize the overall planning of the offshore wind farm cluster grid-connection system, including the selection of the location of the offshore substation, the topology design of the high-voltage transmission line and the selection of the submarine cable, and the selection of the location of the onshore connection point.
How does PCC siting affect offshore wind energy accommodation?
The results indicate that the total annual cost of Case C is reduced by 5.71% compared to Case B and by 3.61% compared to Case A. Case A exhibits more severe wind curtailment and load shedding, indicating that the mismatch between PCCs siting and transmission network expansion can lead to offshore wind energy accommodation issues.
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