LC元件级联电路模拟行波过程的有效性分析

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为了研究输电线上的波过程,传统方法是在具有分布参数特征的实际线路上进行试验,但是由于场地受限,试验难度较大。为了便于研究线路上发生故障后的行波传输问题,目前亟需搭建一种可以近似模拟输电线上波过程的实验平台。文中建立了一种利用LC元件的级联电路,模拟分布参数线路波过程的近似处理模型。对级联电路电压电流的传递特征进行分析,重点研究了LC元件级联电路模拟波过程与实际线路的差异。通过算例及仿真分析,证明了该级联模型在一定情况下,可以比较精确地模拟实际输电线的波过程。

In the study of the wave process of the transmission line,the traditional approach,by which experiments are conducted on the actual line with distributed parameters,makes the test difficult due to the limited space. In order to study the traveling wave transmission after failures occur to the transmi-ssion line,a new experimental platform which can approximately simulate the wave process of the transmission line is badly needed. This paper establishes a model of cascade circuit with LC element to simulate the wave process on the distributed parameter line. The transmission characteristics of the cascade circuit voltage and current are analyzed with focus on the differences between the LC element cascade circu...