风电并网的静态电压稳定性研究

应用P-V曲线法对含风电场（基于变速恒频机组构成）的电力系统的静态电压稳定问题进行研究。提出基于连续潮流法的灵敏度指标来分析风电场并网后系统的静态电压稳定裕度及与相关支路的参与程度情况。通过含有变速恒频机组的风电场并网的简化模型算例进行了仿真研究,结果表明在电压稳定极限点附近,风电功率注入使得风电场及其附近节点成为电压不稳定的关键区域。

Static Voltage Stability with Wind Power Integrated with Power Grid

This paper presented a study on the static voltage stability of the electric power system connecting wind farms (based on doubly-fed induction generators) by applying the P-V curve and sensitivity indexes, and proposed that study should be focused on the static voltage reliability margin and participation extent of the related branches based on the sensitivity in the continuous flow method for the electric system after wind farms are connected with the system. The simulation study on the simplified model calculation example with wind farms (containing doubly-fed induction generators) connecting with the power grid shows that close to the limit point of voltage stability, due to the increasing injected active power of wind farm, the wind farms and adjacent points become vital areas of voltage instability.