摘要
基于模态级数法及轨迹灵敏度分析的励磁调节器参数优化方法通过模态级数法得到较精确的系统状态轨迹的封闭解,利用数值微商算法得到系统的轨迹灵敏度,即目标函数的梯度信息,再应用共轭梯度技术优化励磁调节器参数。模态级数法考虑了系统非线性模式的影响,所得状态轨迹解逼近时域仿真结果,所以该方法能有效地阻尼系统受到大扰动后的振荡。通过算例可验证该方法的有效性。
An optimization method to tune exciter parameters based on a modal series and trajectory sensitivity analyses was introduced. An exact analytic solution of power systems was solved by using a modal series and a numerical differentiation algorithm was presented to figure out the trajectory sensitivity which was used as the gradient information of the objective function. Then, the exciter parameters were optimized by a conjugate gradient method. Because the modal series was considered with the effect of nonlinear interaction among modes, so the modal series approximations and the time-domain simulation agree very well and this method can be used to effectively damp the system oscillation caused by severe disturbances. An example was used for proving the validity of the presented method.
出处
《中国电力》
CSCD
北大核心
2006年第7期40-44,共5页
Electric Power
基金
国家重点基础研究专项经费资助项目(2004Cb217907)
国家自然科学基金资助项目(50595412&50377017)
关键词
励磁调节器
参数优化
模态级数
轨迹灵敏度
excitation regulator
parameter optimization
modal series
trajectory sensitivity