含周期性脉冲噪声的低压电力线噪声建模研究

Modeling of low-voltage power line noise containing periodic pulses

传统峰式马尔科夫链模型不能应用于含有周期性脉冲噪声的电力线噪声建模中,所以提出了一种新型低压电力线噪声建模方法,该方法将电力线噪声分为脉冲群内噪声和脉冲群外噪声2类。脉冲群内噪声使用峰式马尔科夫链建模,脉冲群外噪声使用传统马尔科夫链建模。仿真结果表明,新型电力线噪声模型所构造出的电力线噪声不仅在统计规律上与真实噪声相同,而且在时域波形上也有极高的相似度。

As the traditional peak-type Markov chain model cannot be applied to the modeling of power line noise containing periodic pulses,a method of low-voltage power line noise modeling is proposed,which classifies the power line noise into the noise inside pulse group and the noise outside pulse group. The former is modeled with peak-type Markov chain while the latter is modeled with traditional Markov chain. Simulative results show that,the how-voltage power line noise constructed by the proposed model is not only statistically same as the real noise,but also similar to it in time-domain waveform.