舟山柔直系统的机电暂态等效建模研究

Electromechanical Transient Equivalent Modeling of Zhoushan Flexible DC Transmission System

为高效、准确模拟大型交直流混合电力系统的整个动态过程,提出将逆变器整体等效为一个可控电压源,忽略MMC内部的复杂建模过程,仅保留系统、装置级控制器。最后通过仿真,分析故障下舟山五端柔性直流及交流混合系统,证明了该方法的可行性。

In order to efficiently and accurately simulate the whole dynamic process of the large AC-DC hybrid power system,it is proposed that the inverter as a whole is equivalent to a controllable voltage source,ignoring the complex modeling process in MMC,and only retaining the system and device level controllers. Finally,the simulation analysis of a five-terminal flexible DC and AC hybrid system in Zhoushan is carried out,which proves that the method is feasible.