摘要
在电力系统的机网暂态数字仿真中,故障和操作引起的网络结构变化将导致数值计算中产生数值振荡。对动态相量法产生振荡的机理进行了分析,提出一种新的能有效消除数值振荡的算法——基于临界阻尼调整法的动态相量法。该方法在动态相量域内对元件进行建模,并结合临界阻尼调整法,以保持友模导纳不变,同时达到保持计算精度和消除数值振荡的目的。以RL支路为例推导了该算法的数学模型,并通过与理论计算值的比较,证明了该算法是有效的,适合于较大系统的仿真。
In this paper, a new method is developed for eliminating the numerical oscillation triggered by the changes of network configuration. The dynamic phasor based on the critical damping adjustment has the characteristics of the dynamic phasor, trapezoidal integrator and CDA, so it not only can eliminate the numerical oscillation with high accuracy, but also can keep the conductance unchanged. Simulation results with this method demonstrate that CDA based dynamic phasor is very efficient and can be used for fast dynamic simulation of modern large-scale power systems.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2007年第4期41-45,128,共6页
Proceedings of the CSU-EPSA
关键词
数字仿真
数值积分
动态相量法
数值振荡
临界阻尼调整法
power system simulation
numerical integration
dynamic phasor
numerical oscillation
critical damping adjustment （CDA）
