基于负荷扰动的电网薄弱节点识别方法

Recognition Method of Weak Node in Power Grid Based on Load Disturbance

针对电力系统静态电压稳定问题,采用简单交流电路方程组的几何分析,得出临界电压崩溃潮流的电压电流特性,并利用该特性提出识别电力系统薄弱节点的方法,从而为运行调度人员提供防止电压失稳、规避电压崩溃的理论依据。IEEE5节点算例结果表明,该方法确实是行之有效的。

Aiming at the voltage collapse problems of power system, the voltage and current characteristic of critical voltage collapse power flow is obtained by the geometric analysis of simple alternative circuit equations. In the condition of load disturbance, the way that the weak rode of power system is identified by increasing the real power or reactive power of load is put out. A theoretical basis for preventing voltage instability and voltage collapse is provided. The method proves the effectiveness by the way of 1E, EF5 node algorithmic case.