基于元件自适应模型的步距预测——校正方法  

The predictor-corrector method of step length based on self-adaptive models

作　　者：王庆平[1] 陈超英[1] 陈礼义[1] 

机构地区：[1]天津大学电气工程学院,天津300072

出　　处：《中国电力》2002年第8期29-32,共4页Electric Power

摘　　要：为确保仿真精度的同时提高计算速度,不仅要对元件模型进行合理简化,而且要选择合理的步距并实现切换自动控制。通过对仿真误差的分析,确定了步距变换的校验判据。为避免大量的校验计算,文中还基于元件的自适应模型定义了与时间常数相关的步距预测因子,在此基础上首次提出步距自动控制的预测—校正方法。仿真实验表明:步距的预测—校正方法不仅减少了校验计算量,而且避免了步距的振荡反复,成功地提高了仿真速度。For increasing simulating speed and assuring precision,not only the models of elements need to be simplified,but also the simulating step needs to be controlled automatically.By analyzing calculating errors,this paper builds a verifying criterion of changing steps.To avoid much verifying calculation,the predictor gene is defined based on the self-adaptive models and time con-stants of elements.The predictor-corrector method of step length is put forward in this paper in the first time.Experimental results verify that the predictor-corrector method of step length does not only decrease calculation on verifying but also avoid steps changing back and forth,and it improves simulating speed successfully.

关 键 词：元件 自适应模型 步距预测 校正方法 电力系统 数字仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]