电力线载波通信时频混合降噪方法Noise Reduction Method for LV Power Line Carrier Communication
杨挺;刘佳林;张亚健;侯昱丞;
摘要(Abstract):
电力线干扰噪声是影响电力线载波通信(power line communication,PLC)传输质量的重要因素,直接降低电网信息物理系统的泛在感知和可靠传输性能。为提高电力线载波通信抗干扰能力,该文提出了一种低压电力线载波信号时频混合降噪方法。通过对电力线载波环境中五种常见噪声建模分析,结合载波调制方式,将载波信号降噪问题分解为信号频域降噪和载波时域降噪两步处理,并提出码元位置校验和幅值补偿操作,最终实现电力信号降噪的目的。仿真实验结果表明,该方法在不同编码模式和信道环境下都具有显著的降噪效果,且有很好的抗信号衰减性能,可有效提升信噪比。
关键词(KeyWords): 信息物理系统;低压电力线载波通信;用电信息采集系统;降噪;信噪比
基金项目(Foundation): 国家重点研发计划(2017YFB0903000);; 国家自然科学基金资助项目(61571324);; 天津市自然科学基金资助重点项目(16JCZDJC30900);; 国际科技合作专项项目资助(2013DFA11040)~~
作者(Author): 杨挺;刘佳林;张亚健;侯昱丞;
Email:
DOI: 10.13335/j.1000-3673.pst.2017.2678
参考文献(References):
- [1]张小平,李佳宁,付灏.全球能源互联网对话工业4.0[J].电网技术,2016,40(6):1607-1611.Zhang Xiaoping,Li Jianing,Fu Hao,et al.Global energy interconnection dialogue industry 4.0[J].Power System Technology,2016,40(6):1607-1611(in Chinese).
- [2]马钊,周孝信,尚宇炜,等.能源互联网概念、关键技术及发展模式探索[J].电网技术,2015,39(11):3014-3022.Ma Zhao,Zhou Xiaoxin,Shang Yuwei,et al.Exploring the concept,key technologies and development model of energy internet[J].Power System Technology,2015,39(11):3014-3022(in Chinese).
- [3]赵俊华,文福拴,薛禹胜,等.电力CPS的架构及其实现技术与挑战[J].电力系统自动化,2010,34(16):1-7.Zhao Junhua,Wen Fushuan,Xue Yusheng,et al.Cyber physical power systems:architecture,implementation techniques and challenges[J].Automation of Electric Power Systems,2010,34(16):1-7(in Chinese).
- [4]顾海林,殷树刚,刘海林.低压电力线载波通信面临的挑战与对策[J].电网技术,2008,32(S2):189-190.Gu Hailin,Yin Shugang,Liu Hailin.Challenge and countermeasures of low-voltage power line carrier communication[J].Power System Technology,2008,32(S2):189-190(in Chinese).
- [5]胡江溢,祝恩国,杜新纲,等.用电信息采集系统应用现状及发展趋势[J].电力系统自动化,2014,38(2):131-135.Hu Jiangyi,Zhu Enguo,Du Xingang,et al.Application status and development trend of power consumption information collection system[J].Automation of Electric Power Systems,2014,38(2):131-135(in Chinese).
- [6]戚佳金,陈雪萍,刘晓胜.低压电力线载波通信技术研究进展[J].电网技术,2010,34(5):161-172.Qi Jiajin,Chen Xueping,Liu Xiaosheng.Advances of research on low-voltage power line carrier communication technology[J].Power System Technology,2010,34(5):161-172(in Chinese).
- [7]曹敏,林聪,李波,等.小波包结合奇异值分解在通信信道降噪中的研究[J].自动化仪表,2017,38(2):53-56.Cao Min,Lin Cong,Li Bo,et al.Study on the application of wavelet packet+singular value decomposition in noise reduction for communication channel[J].Process Automation Instrumentation,2017,38(2):53-56(in Chinese).
- [8]杨帆,樊晓平.基于独立分量分析的低压电力线信号降噪[J].计算机工程与应用,2008,44(13):224-227.Yang Fan,Fan Xiaoping.Noise cancellation for low voltage power line signals using independent component analysis[J].Computer Engineering&Applications,2008,44(13):224-227(in Chinese).
- [9]陈晓娟,丛鹏,程晓岩.新型电力线载波通信算法[J].河南科技大学学报(自然科学版),2014,35(5):42-45.Chen Xiaojuan,Cong Peng,Cheng Xiaoyan.New type algorithm for power line carrier communication[J].Journal of Henan University of Science&Technology(Natural Science),2014,35(5):42-45(in Chinese).
- [10]卢永辉,彭湘龙,刘宏.一种基于新阈值函数的电力载波降噪方法应用研究[J].佳木斯大学学报(自然科学版),2017,35(2):250-253.Lu Yonghui,Peng Xianglong,Liu Hong.Research on electric power carrier noise reduction based on new threshold function[J].Journal of Jiamusi University(Natural Science Edition),2017,35(2):250-253(in Chinese).
- [11]Hong Y Y,Yu T H,Lan W C,et al.Adaptive de-noising in power line communication using multi-resolution analysis[C]//International Conference on System Science and Engineering.Puli,Taiwan:IEEE,2016:1-4.
- [12]Zimmermann M,Dostert K.Analysis and modeling of impulsive noise in broad-band powerline communications[J].IEEE Transactions on Electromagnetic Compatibility,2002,44(1):249-258.
- [13]田新成,侯思祖,王旭.基于OFDM的低压电力线通信系统信道噪声特性分析[J].华北电力大学学报(自然科学版),2007,34(1):111-114.Tian Xincheng,Hou Sizu,Wang Xu.Noise characteristics analysis of OFDM system in low-voltage power line communication channels[J].Journal of North China Electric Power University,2007,34(1):111-114(in Chinese).
- [14]Meng H,Guan Y L,Chen S.Modeling and analysis of noise effects on broadband power-line communications[J].IEEE Trans on Power Delivery,2005,20(2):630-637.
- [15]刘海涛,张保会,谭伦农.低压电网500 k Hz~10 MHz频段噪声特性研究及信道容量估算[J].电网技术,2004,28(3):69-73.Liu Haitao,Zhang Baohui,Tan Lunnong.Study on noise characteristics of low voltage power networks in frequency region from 500 k Hz to 10 MHz and estimation of channel capacity[J].Power System Technology,2004,28(3):69-73(in Chinese).
- [16]潘泉,孟晋丽,张磊,等.小波滤波方法及应用[J].电子与信息学报,2007,29(1):236-242.Pan Quan,Meng Jinli,Zhang Lei,et al.Wavelet filtering method and its application[J].Journal of Electronics&Information Technology,2007,29(1):236-242(in Chinese).
- [17]石为人,罗雪松,胡宁.基于小波多分辨率分析的信号消噪[J].重庆大学学报(自然科学版),2002,25(6):59-62.Shi Weiren,Luo Xuesong,Hu Ning.Wavelet-based multiresolution analysis to noise elimination[J].Journal of Chongqing University(Natural Science Edition),2002,25(6):59-62(in Chinese).
- [18]何海波,姜霞,程时杰,等.一种低压配电网载波通信信号分析的新方法[J].中国电机工程学报,2001,21(7):66-71.He Haibo,Jiang Xia,Cheng Shijie,et al.A novel scheme for low voltage powerline communication signal proceessing[J].Proceedings of the CSEE,2001,21(7):66-71(in Chinese).