基于机电波连续体模型的机电扰动传播研究

Electromechanical Disturbance Propagation Based on Electromechanical Wave Continuum Model

连续体模型是一种将离散电力系统连续化处理以研究电力系统动态特性的一种新方法。针对一维均匀无损耗链式系统建立基于机电波连续体模型的偏微分方程,在给定初始条件下得到方程解析解,比较了不同惯性密度情况下,母线电压相角增量幅值和有功功率增量幅值的差异。精确解下的算例仿真曲线比较结果也吻合了以波的反射、透射特性为基础的机电扰动传播控制。

The continuum model is a new method for the continuous processing of discrete power systems to study the dynamic characteristics of power systems.In this paper,a partial differential equation based on the electromechanical wave continuum model is established for a one-dimensional uniform lossless chain system and the analytical solution was obtained under the initial conditions.The difference between the bus voltage phase angel increment amplitude and the active power increment amplitude under different inertia densities was compared.The comparison result of the simulation curve of the calculation example under the accurate solution also agreed with the electromechanical disturbance propagation control based on the wave reflection and transmission characteristics.