直流功率调制器可以对交直流联络线进行局部控制或改善交直流混合系统的运行特性。
The current controller on the HVDC line can do AC/DC parallel tie-line local control or improve the stability of AC/DC hybrid power systems.
算例分析表明，该算法能方便地计算交直流混合系统在最恶化负荷增长方向下的负荷功率裕度。
The test results show that the closest critical load margin can be easily calculated using CCLP algorithm.
当交流系统发生三相不对称故障时，忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
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