Dynamic Reactive Power Allocation Strategy for AC/DC System Based on Quantum Genetic Algorithm

With the fast increasing of new energy, the voltage stability control ability of the AC/DC hybrid grid is seriously insufficient and the voltage stability margin of the network is greatly reduced. The dynamic reactive power allocation strategy for AC/DC grid with a lot of new energy is studied in this paper. Firstly, the sensitivity analysis method of AC/DC hybrid system is presented. Then a dynamic reactive power allocation evaluation index considering both steady and transient characteristics is determined. And an optimization model for AC/DC grid with new energy considering both steady and transient processes is established. Finally, a dynamic reactive power allocation strategy based on quantum genetic algorithm is proposed. The proposed strategy is applied to the actual power grid, and the calculation and comparative study prove the effectiveness and practicability of the strategy.