摘要
针对电网电力线宽带载波通信过程中各种噪声干扰问题,引入Duffing振子,利用混沌振子抑噪特性,提出了电网电力线宽带载波检测方法研究。依据Duffing振子方程动力学属性,构建Duffing振子模型,并研究临界混沌状态振子相轨迹。设计不同激励频率噪声免疫特性测试模型,将噪声信号输入模型中,确定Duffing振子噪声免疫属性。依据电网电力线宽带载波工作原理,设置标准激励频率。通过分析宽带载波状态与信号相位关系,设定信号检测规则,由此获取信号相位分量所在区域信息,依据该信息设计检测流程。通过仿真结果可知,基于Duffing振子带宽载波检测效率较高,最高可达到98%,降低了数据传输中因噪声而引起突发错误出现的概率。
Aiming at various noise interference problems in power line wide-band carrier communication,Duffing oscillator is introduced,and the detection method of power line wide-band carrier is proposed based on the noise suppression characteristics of chaos oscillator.Based on the dynamic properties of Duffing oscillator equation,the Duffing oscillator model is constructed and the phase trajectory of the oscillator in critical chaotic state is studied.The immune characteristic test model of noise with different excitation frequency is designed,and the noise signal is input into the model to determine the immune property of Duffing oscillator noise.According to the working principle of power line broadband carrier,the standard excitation frequency is set.By analyzing the relationship between the broadband carrier state and the signal phase,the signal detection rules are set to obtain the regional information of the signal phase component,and the detection process is designed according to the information.The simulation results show that the detection efficiency of Duffing oscillator bandwidth carrier is high,up to 98%,which reduces the probability of burst error caused by noise in data transmission.
作者
唐登平
汪应春
余鹤
TANG Deng-ping;WANG Ying-chun;YU He(State Grid Hubei Electric Power Company Measurement Centre,Wuhan 430080,China)
出处
《电子设计工程》
2020年第18期144-147,152,共5页
Electronic Design Engineering
基金
国家电网有限公司科技项目(521532180033)。
