This study presents an investigation of the impact of the quasi-stationary voltage support provided by a voltage source converter (VSC) connected to a single point of a power system. Based on the directional derivative concept, an analytical method is developed to quantify the sensitivities of the AC bus voltage with respect to the VSC reactive power control modes. Based on a real case study, it is shown that the method applies to VSC units that are part of VSC-HVDC systems, which can operate in a point-to-point or multi-terminal configuration. Time-domain simulations are performed to verify the findings from the application of the analytical method on a reduced size power system.

这项研究提出了对由连接到电力系统单点的电压源转换器（VSC）提供的准静态电压支持的影响的研究。基于方向导数的概念，开发了一种分析方法来量化交流母线电压相对于VSC无功功率控制模式的灵敏度。基于实际案例研究，结果表明该方法适用于VSC-HVDC系统中的VSC单元，该系统可以点对点或多端子配置运行。执行时域仿真以验证分析方法在减小尺寸的电力系统上的应用所得出的结论。