一种改进的电力系统戴维南等值参数跟踪算法

An improved tracking algorithm of Thevenin equivalent parameters for power systems

针对传统的电力系统戴维南等值参数跟踪方法存在的缺点,提出一种复数域偏最小二乘法跟踪戴维南等值参数。该算法在传统偏最小二乘法的基础上,简化了算法回归模型,并适应等值系统发生多种类型扰动的情况,有效改善了参数漂移问题,在电力系统内部扰动时仍能准确跟踪戴维南等值参数。在DIgSILENT/PowerFactory 15.0中搭建IEEE 39节点系统进行仿真,验证了复数域偏最小二乘算法跟踪参数的有效性和准确性。

To address the drawbacks of the traditional Thevenin equivalent parameters tracking method in power system,a complex-domain partial least squares method is proposed to track the Thevenin equivalent parameters.The regression model and the iterative process are simplified based on the traditional partial least squares method.At the same time,the algorithm can be used to multiple types of disturbances in the equivalence system,which can not only effectively improve the parameter drift problem,but also accurately track the Thevenin equivalent parameters when there are internal disturbances in the power system.Finally,an IEEE 39 nodal system is simulated in DIgSILENT/PowerFactory 15.0,and the result shows the effectiveness and accuracy of the tracking parameters method based on the complex-domain partial least squares algorithm.