Abstract
In view of the reactive power coordination difficulties caused by reactive power strong coupling, the provincial power grids in the interconnected system are formed by the multi-AC/DC transmission. Wind power channels are under the conditions of large-scale long-distance transmission of wind power and other forms of renewable power generation. The AC-DC hybrid power flow equation of the interconnected system, including the AC-DC tie lines, is presented in this paper, along with the robust dynamic evolutionary optimization of the reactive power system in interconnected systems under fluctuating and uncertain wind power conditions. Therefore, the rapid collaborative optimization of reactive power flow and the exchange of reactive power between tie lines between provincial power grids are realized. The analysis was made by taking four interconnected large-scale provincial power grids of Eastern Mongolia, Jilin, Liaoning and Shandong as an example. The simulation results demonstrate the effectiveness and superiority of the proposed reactive power dynamic multi-objective optimization method for interconnected power grids.
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