作　　者： ; ;

机构地区： 华南理工大学电力学院

出　　处： 《中国电力》 2006年第7期35-39,共5页

摘　　要： 就目前广东电网中存在的多馈入直流的交直流混合电网静态电压稳定问题进行了研究,给出了研究静态电压稳定性的模型,对静态电压稳定性的判断指标从交流、直流和交直流混合3个角度进行了分析;对静态电压稳定性的分析方法则从整体上和局部上给予了分析和讨论,并给出了实际工程中静态电压稳定性的判据。通过特征值分解和相应的模式分析来判断出电力系统电压稳定性、计算负荷裕度,并能够根据裕度指标、最小特征值及相对电距离指出系统中的薄弱环节,从而加强薄弱环节、提高整个系统的稳定性。 The model of muhi-infeed AC/DC system was given firstly and based on that practical parameters and analytic methods of static voltage stability were presented and discussed. The static voltage stability was analyzed from two aspects： one is from the whole point of view, the sensitivity analysis and margin analysis were given to evaluate the vohage ability of the whole system; the other is from the local point of view, the eigenvalue and the Relatively Electric Distance were used to find the weak part of the whole system. Based on these theories, the static voltage stability can be analyzed, the stability margin can also be found out, and it is very beneficial for the practice in the multi-infeed ACfDC system.

关 键 词： 交直流混合系统 静态电压稳定 特征值分解 灵敏度分析 负荷裕度

领　　域： [电气工程]