一种改进的步长控制连续性潮流计算方法

An Improved Continuation Method with Controlled Step Size

提出了一种改进的步长控制连续性潮流计算方法。在传统连续性方法的基础上,根据预测环节中得到的信息,自动选取合适的步长,从而确保系统内的各控制元件能够按照实际的顺序进行调节,在保证计算结果正确性的基础上,又能兼顾到计算速度。对568母线系统的计算表明该算法能够有效地控制步长,在保证计算结果准确性的前提下具有较高的计算效率。

An improved continuation method with controlled step size is presented. This algorithm uses the information of prediction and adjusts step size automatically to simulate actual acting sequence of controllers. It ensures the veracity of result, giving attention to speed at the same time, especially in systems where lots of discrete devices exist. It is proved that this algorithm can be used accurately and effectively to obtain the voltage stability margin in a 568-bus power system.