基于RLS算法的自适应抗干扰工频通信滤波器的设计与实现

Design and Implementation of Adaptive Anti-interference Frequency Communication Filters Based on RLS Algorithm

目的电网中的有用畸变信号相对电压或者电流信号比较小,在传输的过程中会湮没有用畸变信号,为了抑制电网噪声干扰,设计工频通信自适应滤波器。方法采用双向工频通信技术传输信号,核心技术是参数可调的基于RLS的自适应滤波器的算法。结果调制信号经过自适用抗干扰的RLS算法的滤波器后,不需要预先知道输入信号和噪声的统计特性,就能实现干扰噪声大大减小,很大程度上提高了信噪比,改善了信道的信能,有效提高双向工频通信信号的传输。结论通过实验仿真,基于RLS算法的自适应滤波器的设计实现了信号的有效传输,同时双向工频通信信号的噪声受到有效抑制。

Objective The useful distortion signals in power system voltage or current signal are relatively small and in the transmission process it will annihilate useful distortion signals.In order to suppress the signal distortion of power noise,power frequency communication adaptive filter will be designed.Methods A two-way power frequency communication technology was used to transmit signals,and the core technology was an adaptive filter based on RLS based on adjustable parameters.Results Through the filter adaptive RLS algorithm of anti-jamming,without the statistical characteristics of the input signal and noise,the modulated signals made the noise greatly reduced,which improved effectively the SNR,channel and the transmission of two-way power frequency communication signal.Conclusion Through experimental simulation,the design of adaptive filter based on RLS algorithm realizes the effective transmission of signal,and achieves the effective suppression of two-way power frequency communication signal.