In this paper we propose a self-adaptive trust region algorithm. The trust region radius is updated at a variable rate according to the ratio between the actual reduction and the predicted reduction of the objective f...In this paper we propose a self-adaptive trust region algorithm. The trust region radius is updated at a variable rate according to the ratio between the actual reduction and the predicted reduction of the objective function, rather than by simply enlarging or reducing the original trust region radius at a constant rate. We show that this new algorithm preserves the strong convergence property of traditional trust region methods. Numerical results are also presented.展开更多
给出一种基于直流潮流灵敏度的断面潮流定向控制新方法。首先利用直流潮流获得断面支路对应的发电机输出功率转移分布因子(GSDF)矩阵;进而根据断面潮流定向控制需要,利用断面的GSDF矩阵,通过非线性优化确定断面潮流调控方案。该方法不...给出一种基于直流潮流灵敏度的断面潮流定向控制新方法。首先利用直流潮流获得断面支路对应的发电机输出功率转移分布因子(GSDF)矩阵;进而根据断面潮流定向控制需要,利用断面的GSDF矩阵,通过非线性优化确定断面潮流调控方案。该方法不仅可实现对断面总潮流的准确控制,并可兼顾各支路潮流不同变动目标的定向要求。New England 39节点、IEEE118节点等系统验证结果表明,该方法可对断面潮流进行较精确的定向控制,工程应用前景良好。展开更多
文摘In this paper we propose a self-adaptive trust region algorithm. The trust region radius is updated at a variable rate according to the ratio between the actual reduction and the predicted reduction of the objective function, rather than by simply enlarging or reducing the original trust region radius at a constant rate. We show that this new algorithm preserves the strong convergence property of traditional trust region methods. Numerical results are also presented.
文摘给出一种基于直流潮流灵敏度的断面潮流定向控制新方法。首先利用直流潮流获得断面支路对应的发电机输出功率转移分布因子(GSDF)矩阵;进而根据断面潮流定向控制需要,利用断面的GSDF矩阵,通过非线性优化确定断面潮流调控方案。该方法不仅可实现对断面总潮流的准确控制,并可兼顾各支路潮流不同变动目标的定向要求。New England 39节点、IEEE118节点等系统验证结果表明,该方法可对断面潮流进行较精确的定向控制,工程应用前景良好。
