摘要
系统受到大扰动后的暂态能量由系统中动能和势能组成,其中系统动能为所有发电机动能之和。由于在传统推导发电机转子运动方程的过程中做了一个转矩的标幺值近似等于功率标幺值的假设,使得在计算发电机动能时存在着一定的误差,在动能函数推导的过程中不采用传统的假设,得到修正的动能函数表达式,并将其与传统的动能函数的精确性进行仿真验证,仿真系统分别采用单机系统和新英格兰10机39节点系统。
The power system transient energy consists of the kinetic energy and the potential energy of system, when power system is subjected to a serious disturbance. The supposition that per unit torque is equal to per unit power approximately is introduced during the traditional derivative procedure of the equations of the rotor motion of the synchronous generators, which leads to the kinetic energy computing error of generator. In this paper, the supposition accounted above is not adopted during the derivative procedure of the generator kinetic energy,and then a corrected generator kinetic energy function is obtained. Moreover, simulations on the single machine and New England power system is carried to show the effectiveness of the proposed kinetic energy function.
出处
《东北电力大学学报》
2007年第2期5-10,共6页
Journal of Northeast Electric Power University
关键词
暂态能量
发电机动能
修正动能函数
transient energy function
generator kinetic energy
correctional kinetic energy function
