摘要
本文对大型水轮发电机不对称运行时阻尼条的损耗及温升计算进行了研究.文中将阻尼绕组等效为阻抗网络,推导了网络参数的计算公式.采用快速富立叶变换方法进行了阻尼条损耗及温升的计算,给出了空载情况下线间短路和单相对地短路时阻尼条瞬态温升随时间的变化规律.
This paper deals with the calculation of the damping winding loss and temperature rise of large waterwheel generator under unbalanced faults. With damping winding being equivalized by an impedance network,the formulas for determining network parameters are derived.The Fast Fourier Transformation (FFT) method is used in the calculation of the damping winding loss and temperature rise. The transient temperature rise curves of damping winding under no-load line-to-line,line-to-ground short circuit fault conditions are presented.
