配用电泛在业务盲区通信子载波干扰抑制方法  

Subcarrier interference suppression method for communication in ubiquitous service blind zone of power distribution

作　　者：冯奕军 冼庆祺 FENG Yi-jun;XIAN Qing-qi(School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China;Dongguan Power Supply Bureau, Guangdong Power Grid Co.Ltd. , Dongguan 523000, China)

机构地区：[1]武汉大学电气与自动化学院,武汉430072 [2]广东电网有限责任公司东莞供电局,广东东莞523000

出　　处：《沈阳工业大学学报》2021年第4期378-383,共6页Journal of Shenyang University of Technology

基　　金：广东省自然科学基金项目(20201561255).

摘　　要：为确保配用电网正常运行,提高电力企业业务水平,提出了配用电泛在业务盲区通信子载波干扰抑制方法.在不同配用电业务类型下构建信道特征模型,利用子空间算法计算接收信号的自相关函数确定业务盲区;通过子载波干扰概率密度分布函数计算噪声功率,设定抗干扰门限值去除噪声,实现子载波干扰抑制.仿真结果表明,该方法可以去除信道中96%以上的噪声,通信接收端的星座图区域划分明显,在BRE水平更低的情况下,信号传输功率差异较小.所提方法可以有效抑制子载波干扰,提高通信成功率.In order to ensure the normal operation of power distribution and improve the business level of power enterprises,a subcarrier interference suppression method for communication in ubiquitous service blind zone of power distribution was proposed.A channel characteristic model was constructed under different types of power distribution services.The autocorrelation function of received signals was calculated using subspace algorithm to determine the service blind zone.The noise power was calculated with the interference probability density distribution function of subcarrier.The anti-interference threshold was set to remove noise,so as to achieve the suppression of subcarrier interference.The simulation results show that the as-proposed method can remove more than 96%of the noise in channel.The constellation area division of communication receiver is distinct.The difference of signal transmission power is small when the BRE level is lower.The as-proposed method can effectively suppress the subcarrier interference and enhance the success rate of communication.

关 键 词：配用电 泛在业务 通信子载波 干扰抑制 多径传播 信道模型 噪声空间 抗干扰门限 

分 类 号：TP318[自动化与计算机技术—计算机软件与理论]