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.
出处
《华北电力技术》
CAS
2012年第4期27-30,共4页
North China Electric Power
关键词
低压电网
噪声
噪声特性
电压过零点
low voltage power
noise
noise characteristics
voltage comes to zero
