电力系统动态模拟中发电机组转动惯量的补偿

Inertia compensation methods for generator sets in dynamic power system simulations

在电力系统的动态模拟中,为了正确地模拟系统的机电暂态过程,须对模拟系统的转动惯量进行适当的补偿。该文从发电机组标幺化的运动方程出发,论述了基于转矩补偿原理的两种转动惯量补偿方法,并按照发电机组净转矩是否可测,给出了不同的实现方法。从发电机组动态模拟系统的稳定性、准确性和动态响应等方面,分析了这些转动惯量补偿方法的性能,给出了它们在电力系统动态模拟研究中的适用条件和应用范围,并通过计算机仿真和实验,验证了这些补偿方法的有效性。

Physical simulations of the mechanical and electric transients in power systems need to properly compensate for inertia in the systems. The dynamics equations for the generator set were used to develop two inertia conpensation methods based on the principles of electromagnetic torque conpensation depending on whether the net torque on the generator axis is measurable. Computer simulations and experiments validated the scope of the stability, accuracy, and dynamic response of these methods.