电力线信道系统噪声的建模方法研究

电缆系统存在信道环境恶劣、噪声特性复杂的问题,对系统的正常通信及故障检测造成较大的干扰。在对典型电力线噪声进行分类并分析其不同特性的基础上,针对电力线中常发生的电弧故障,提出基于分数阶滤波器的电弧噪声建模方法,以及基于数据驱动的电弧噪声模型参数确定方法,与典型电力线噪声相结合,建立更加完善、准确的电力线信道系统噪声模型。通过仿真和实验结果验证了模型的准确性,为后续开展电力线故障诊断技术的深入研究提供参考。

Research on Noise Modeling Method in Power Line Channel System

There are problems of complicated channel environment and complex noise characteristics in the aircraft cable system, which has caused great interference to the normal communication and fault detection of the system. In this paper, based on the classification of typical power line channel noise and its different characteristics, an arc noise modeling method based on fractional-order filter is proposed, and the parameter determination method of arc noise model based on data-driven is proposed, that combined with the typical power line noise, building a more complete and accurate power line channel system noise model. The accuracy of the model is verified by the simulation and experimental results, which can provide a reference for the further study of the power line fault diagnosis technology.