摘要
该文结合电力系统自身的特点和要求,利用基本运行情况下电力系统中的信息,采用两种静态等值方法求出电力系统等值参数:第一种方法基于戴维南网络等效理论。第二种方法采用两点潮流计算法。并在此基础上进行电压稳定性分析。用这两种方法可以迅速地预测负荷的临界功率和临界电压、Q-V曲线、P-V曲线及P-Q曲线:还可计算衡量节点电压稳定的节点最小奇异值。与衡量系统电压稳定的系统最小奇异值相比,具有物理概念明确,计算量小的特点。用IEEE 14母线系统和IEEE 30母线系统进行仿真计算,结果证明了这两种静态等值方法的有效性。
Two static equivalent methods are used to acquire equivalent parameters of power systems in this paper. The first method is based on Thevenin network equivalent theory. The second method calculates load flows two times. These two methods combine feature and requirement of power systems and use the base-case system information. Based on the two methods, voltage stability analysis is completed. The Q-V, P-V, P-Q curves and the minimum singular values, which have distinctive physical meaning and require less computation work compared with the margin methods expressed by previous singular value, can be quickly got by these two methods respectively. The results given from IEEE 14-bus system and IEEE 30-bus system simulations show the effectiveness of the two methods.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2003年第4期1-4,20,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50177020)
国家重点基础研究专项经费项目(G1998020311)
