我国低压电网台区噪声特性研究  

Analysis on Line Noise Characteristics of Low Voltage Grid

作　　者：张卫欣 张剑 徐向阳 

机构地区：[1]天津电力公司电能计量中心,天津300042 [2]天津电力宝坻供电公司,天津301800

出　　处：《华北电力技术》2012年第4期27-30,共4页North China Electric Power

摘　　要：低压电网载波通信需要克服电网上的噪声。通过实践研究和数学分析发现,我国电压电网的噪声具有工频变化规律;在工频电压过零点附近,噪声最小;在工频电压峰值附近,噪声最大;高频噪声分量小,低频噪声分量大。载波通信应采用较高的载波频率,在电压过零点附近分时通信。The low voltage power line carrier communication must overcome the noise on power line.After careful study,we find that the noise characters on power line of China has regular pattern.The noise is lowest when the voltage comes to zero.The noise is highest when the voltage comes to peak.The noise on power line contains more high frequency noise and less low frequency noise.The power line carrier communication should communicate within differential time about the voltage come to zero with higher carrier frequency.

关 键 词：低压电网 噪声 噪声特性 电压过零点 

分 类 号：TN915.853[电子电信—通信与信息系统]