利用回路电流和节点电压混合分析法快速构造电压稳定域

FAST CONSTRUCTION OF VOLTAGE STABILITY REGIONS USING HYBRID ANALYSIS METHOD COMBINING LOOP CURRENT WITH NODE VOLTAGE

应用回路电流和节点电压混合分析法对π型基本回路模型进行了分析,给出了一种利用节点注入功率和网络参数快速构造基于状态空间的电压稳定域的方法。提出了一种新型快速计算电压稳定裕度的指标,该指标以负荷节点注入电流幅值的平方与节点无功功率之间的差值来表征电压稳定裕度。最后将所提出的方法应用于IEEE30节点系统和IEEE118节点系统,并与已有算法进行了比较,验证了该方法的可行性。

Using a hybrid analysis method combining loop current with nodal voltage the π-shaped basic loop model is analyzed and a method to fast construct state space based voltage stability region by use of nodal injection power and network parameters is given. A new type of fast voltage stability margin index (VSMI) is proposed, in which the voltage stability margin index is characterized by the difference between the square of the current injected at load node and the reactive power at the same node. Applying the proposed method to IEEE 30-bus and IEEE 118-bus test system and comparing the results by the proposed method with those by the existing algorithms, the feasibility of the proposed method is verified.