考虑低压噪声馈送的中压电力线噪声特性研究  

Research on channel noise of the MV power line considering the LV feedback noise

作　　者：谢志远[1] 董芬芬[1] 尹亚南[1] 邓盛翔[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电子技术应用》2014年第2期111-114,共4页Application of Electronic Technique

基　　金：国家自然科学基金项目(61172075)

摘　　要：噪声干扰严重影响电力线通信的可靠性。通过对电力线信道噪声、配电变压器高频传输特性和端口阻抗特性的测量,分析了电力线信道噪声特性,第一次提出考虑低压侧通过配电变压器向中压线路馈送的噪声,并对配电变压器的高频特性进行了分析和建模。通过对实测数据和Matlab仿真结果的比较,验证了所建模型的正确性。根据变压器的高频传输特性,提出了在低压侧抑制噪声的方法,有助于改善中压电力线信道的噪声环境。Noise seriously affects the reliability of power line communication, In this paper, channel noises of power line and attenuation and port impedance characteristics of the distribution transformer in high frequency are measured and the noise charac- teristics are analyzed. This paper firstly puts forward considering the Low-Voltage （LV） feedback noise in Medium-Voltage（MV） side, and the high frequency characteristics of distribution transformer is analyzed and modeled. Feasible method of noise restrain in low voltage side is put forward, which will improve the noise environment of the MV power line channel.

关 键 词：电力线噪声 变压器模型 高频特性 电力线载波通信 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]