基于Walsh变换的水轮机调节系统参数辨识

Parameter Identification of Hydraulic Turbine Governing System Based on Walsh Transform

连续系统辨识方法在电力系统辨识理论研究与工程应用中具有重要意义,针对连续系统辨识的难点,通过积分变换将信号微分项进行积分运算消除误差,考虑Walsh变换的快速特性和积分变换特性,提出基于Walsh变换的电力系统参数辨识方法,并进行了水轮机调节系统参数辨识试验。结果表明,该方法有效,参数辨识精度高,抗干扰能力强。

Continuous system identification method is important in theoretic study and engineering application of power system identification. Aiming at the difficulty of continuous system identification, integral transform is introduced and applied to avoid errors caused by differentiation of continuous signal. Considering the rapidity and integral characteristics of Walsh transform, an identification method of power system based on Walsh transform is proposed, and identification experiments of hydraulic turbine governing system have been carried out. The results show that the proposed method is effective with high accuracy and anti-noise performance.