基于自适应最小均方误差算法实现10kV电力线通信的噪声对消Implementing Noise Cancellation of 10 kV Power Line Communication Based on Adaptive Least-Mean-Square Error Algorithm
高强;张君;郑确;
摘要(Abstract):
首先介绍了中压电力线信道噪声通用模型,对现场采集的噪声进行互相关系数计算,并采用对称分量法进行相关性分析,得出三相电力系统相间噪声具有一定相关性的结论。改变单相传输模式,根据两相噪声的一致性特点,提出基于自适应最小均方误差(least-mean-square error,LMS)算法实现中压电力线通信(medium voltage power line communication,MV-PLC)的噪声对消。自适应LMS算法虽然收敛速度较慢,但是计算量小,易于实现。仿真结果表明,噪声对消方法的采用有效改善了10kV中压电力线的信噪比,为10kV配网自动化系统采用载波通信技术提供了新的实现途径。
关键词(KeyWords): 中压电力线通信;中压配电网;最小均方自适应滤波;噪声对消;信道噪声
基金项目(Foundation):
作者(Author): 高强;张君;郑确;
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DOI:
参考文献(References):
- [1]Joshi R P,Bhosale S,Patil P H.Analysis and simulation of noise in power line communication system[C].International Conference on Emerging Trends in Engineering and Technology,2008.
- [2]Zimmermann M,Dostert K.Analysis and modeling of impulsive noise in broad-band power line communications[J].IEEE Trans on Electromagnetic Compatibility,2002,44(1):249-258.
- [3]程晓荣,苑津莎,侯思祖,等.中压宽带电力线通信接入及信道特性测试与分析[J].电力系统自动化,2005,29(14):69-72.Cheng Xiaorong,Yuan Jinsha,Hou Sizu,et al.Medium-voltage access of broadband PLC and test and analysis of channel characteristics[J].Automation of Electric Power Systems,2005,29(14):69-72(in Chinese).
- [4]Meng H,Guan Y L,Chen S.Modeling and analysis of noise effects on broadband power-line communication[J].IEEE Trans on Power Delivery,2005,20(2):630-637.
- [5]Zhai M Y,Measurements and channel characteristics of LV power line communications networks in China[J].IEEE International Symposium on Power Line Communications and Its Applications,2006.
- [6]王根平,易灵芝.电力线通信系统中的信道训练和信道估计方案[J].电网技术,2007,31(3):35-37.Wang Genping,Yi Lingzhi.Channel training and estimating scheme for power line communication[J].Power System Technology,2007,31(3):35-37(in Chinese).
- [7]姜霞,程时杰.低压配电网载波通信噪声特性研究[J].中国电机工程学报,2000,20(11):30-35.Jiang Xia,Cheng Shijie.Noise characteristics investigation in low voltage power line communication[J].Proceedings of the CSEE,2000,20(11):30-35(in Chinese).
- [8]翟明岳,曾庆安.低压电力线通信信道的马尔柯夫特性研究[J].中国电机工程学报,2007,27(22):117-121.Zhai Mingyue,Zeng Qing’an.Markov characterization of LV power line communications systems channels[J].Proceedings of the CSEE,2007,27(22):117-121(in Chinese).
- [9]赵庆杞,杨东升,张化光,等.电力线通信中信道估计和模糊滤波技术研究[J].电网技术,2007,31(22):85-89.Zhao Qingqi,Yang Dongsheng,Zhang Huaguang,et al.Research on channel estimation and fuzzy filtering technique applied in power line communication[J].Power System Technology,2007,31(22):85-89(in Chinese).
- [10]Meng J.Noise analysis of power-line communications using spread-spectrum modulation[C].IEEE Trans on Power Delivery,2007,22(3):1470-1476.
- [11]Xie Zhiyuan,Ma Yinghong.A new adaptive channel estimation for orthogonal frequency division modulation in power line communication[C].International Conference on Communications,Circuits and Systems,2006.
- [12]李明,杨成语.基于模糊推理的变步长LMS自适应滤波算法[J].控制工程,2006,13(3):237-239.Li Ming,Yang Chengyu.Variable step size LMS adaptive filtering algorithm based on fuzzy inference[J].Control Engineering of China,2006,13(3):237-239(in Chinese).
- [13]齐郑,陈炯聪,杨奇逊.基于小波变换和LMS自适应滤波器的单相接地选线方法[J].电力系统自动化,2004,28(9):58-61.Qi Zheng,Chen Jiongcong,Yang Qixun.Selection of single-phase to ground fault line based on wavelet transform and LMS adaptive filter[J].Automation of Electric Power Systems,2004,28(9):58-61(in Chinese).
- [14]李荣伟,吴乐南.10kV中压配电线载波通道的建模[J].电路与系统学报,2006,12(6):19-24.Li Rongwei,Wu Lenan.Modeling of carrier channel over10kV distribution lines[J].Journal of Circuits and Systems,2006,12(6):19-24(in Chinese).
- [15]马强,陈启美,李勃.跻身未来的电力线通信:(二)电力线信道分析及模型[J].电力系统自动化,2003,27(4):72-76.Ma Qiang,Chen Qimei,Li Bo.Predictive schemes for future power line communication part two:PLC channel analysis and model[J].Automation of Electric Power Systems,2003,27(4):72-76(in Chinese).
- [16]刘海涛,张保会,谭伦农.低压电网500kHz-10MHz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 from500kHz-10MHz and estimation[J].Power System Technology,2004,28(3):69-73(in Chinese).
- [17]郑涛,杨晓宪,张保会.低压电网在1-30MHz频段的阻抗测量与特性分析[J].电网技术,2005,29(19):50-54.Zheng Tao,Yang Xiaoxian,Zhang Baohui.The characteristics analysis for impedance in1-30MHz band[J].Power System Technology,2005,29(19):50-54(in Chinese).
- [18]赵宇明,郭静波,王赞基.一种改进的电力线正交频分复用信道估计的最小平方算法[J].电网技术,2005,29(8):25-29.Zhao Yuming,Guo Jingbo,Wang Zanji.An improved least square algorithm for channel estimation of power line orthogonal frequency division multiplexing communications[J].Power System Technology,2005,29(8):25-29(in Chinese).
- [19]张旭辉,张礼勇,梁宵.基于改进粒子群优化算法的电力线通信多径传输模型参数辨识[J].电网技术,2009,33(1):75-79.Zhang Xuhui,Zhang Liyong,Liang Xiao.Parameter identification of multi-path transmission model for power line communication based on improved particle swarm optimization[J].Power System Technology,2009,33(1):75-79(in Chinese).