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Research on Power Flow Algorithm of LCC and VSC Hybrid Multi-Terminal AC-DC System

机译：LCC和VSC混合多端子AC-DC系统的潮流算法研究

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摘要

LCC and VSC are essentially different in the steady-state model and working principle. When the two converters are mixed and applied to the same multi-terminal HVDC transmission system, the steady-state mathematical model and the power flow calculation method have also changed accordingly. This paper first describes the steady-state model of the hybrid system. Then, based on the comprehensive consideration of the working principle and control mode of the two converters, the mathematical model of the power flow calculation of the hybrid system is derived. Furthermore, an alternating solution algorithm suitable for the hybrid system is proposed. Finally, the effectiveness and accuracy of the proposed algorithm are verified by a hybrid two-terminal DC transmission system and a hybrid three-terminal system.
机译：LCC和VSC的稳态模型和工作原理本质上不同。当将两个转换器混合并应用于相同的多端HVDC输电系统时，稳态数学模型和潮流计算方法也相应地发生了变化。本文首先描述了混合系统的稳态模型。然后，在综合考虑两个变流器的工作原理和控制方式的基础上，推导了混合动力系统潮流计算的数学模型。此外，提出了一种适用于混合系统的交替求解算法。最后，通过混合两终端直流传输系统和混合三终端系统验证了所提算法的有效性和准确性。

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