二次电压控制研究（一）

研究了一种新的提高系统电压稳定性的方法——二次电压控制。推导了二次电压控制的结构化模型，该模型简洁，具有清晰的物理意义。提出了一种确定二次电压控制区域的嵌套分解算法。该方法利用图论对系统进行分区，不需进行特征值分析，具有很快的计算速度。算法所具有的自然嵌套特性，可进一步提高计算速度。通过与传统方法的比较，证明该分区方法是有效的。

STUDY OF SECONDARY VOLTAGE CONTROL Part One Structural Model and Nested Clustering Algorithm

This paper studies a new approach, secondary voltage control, to improve voltage stability. In this work, thestructural model of secondary voltage control is derived. This model is very simple and has clear physical interpretation. Anested clustering algorithm to decide the partitioning of secondary voltage control areas is studied. This algorithm is based ongraph theory and needs no eigenvalue analysis, hence it has very fast computational speed. Besides, the natural nestingcharacteristic of this method can further speed up the computation. The comparison of this algorithm with the conventionalones proves its validity.