风力发电的大规模并网给电力系统的电压稳定带来了影响,因此对含风电场的系统电压稳定性分析变得至关重要。简单介绍了当今分析电压稳定性的几种方法,并仿真了两个风电场同时接入一个36节点的电力系统,绘制其P-V曲线和Q-V曲线来分析该电力系统的风电场接入点的小干扰电压稳定性;并在节点23设一冲击负荷,仿真系统的暂态电压,分析两接入点的电压稳定性。
Large scale interconnection of wind farms to the power system has brought about impacts on voltage stability, therefore, analysis of voltage stability of power systems containing wind farms has become important. The current methods for analyzing voltage stability were presented briefly. Simulation of two wind farms connecting to a 36-bus power system was conducted, and the P-V and Q-V curves were drawn to analyze the voltage stability at the connecting points. In addition, an impact load was put into bus 23 to simulate the transient voltage of the system to analyze the voltage stability at the two connecting points.