Abstract：AC-DC power flow calculation is the basis for studying HVDC system. Since the traditional iterative methods need alternative iteration for many times and have convergence problem, this paper analyses the causes of many iterations firstly, and then proposes a new AC-DC power flow calculation method that is suitable for AC-DC power grid with voltage source converter (VSC). The algorithm re-divides AC-DC power system, incorporates interface equation into AC power system, and augments AC Jacobi matrix with variable of DC system. This algorithm can realize AC-DC decoupled power flow calculation, and has the convergence property of unified method while inheriting convenient control mode strategy of traditional alternating iterative method. The examples of modified IEEE 30-node system and IEEE 57-node system show the correctness and effectiveness of the method.
王家融, 艾欣, 王坤宇, 李然. 基于增广雅可比矩阵的交直流解耦潮流新算法[J]. 电工技术学报, 2018, 33(6): 1382-1389.
Wang Jiarong, Ai Xin, Wang Kunyu, Li Ran. A Novel AC-DC Decoupled Power Flow Calculation Method Based on the Augmented Jacobian Matrix. Transactions of China Electrotechnical Society, 2018, 33(6): 1382-1389.
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2018, Vol. 33 
