低压电力线窄带载波通信信道阻抗与衰减特性的现场测量及分析  

Field Measurement and Analysis of the Impedance and Attenuation Characteristics of the Low-voltage Power Line Narrowband Carrier Channel

作　　者：李丰[1,2] 田海亭[2] 王思彤[3] 袁瑞铭[3] 梁贵书[1] 

机构地区：[1]华北电力大学,河北保定071003 [2]华北电力科学研究院有限责任公司,北京100045 [3]华北电网有限公司计量中心,北京100045

出　　处：《电测与仪表》2011年第7期90-96,共7页Electrical Measurement & Instrumentation

摘　　要：低压电力线载波通信已经成为智能电网建设中重要的本地通信手段,但低压电力线通信环境恶劣,影响通信性能,因此必须测量并掌握低压电力线的信道特征。本文针对低压电力线窄带载波通信应用于电力集抄系统的现状,给出了现场测量阻抗和衰减特性所采用的方法,并对有代表性的台区进行了现场测量,分析总结了测量得到的不同类型低压电力线信道在80～500kHz频段内的阻抗和衰减特性,可为低压电力线载波通信现场环境的研究提供参考。Low-voltage power line carrier communication（LV-PLC）has become an important mean of local communication in the undergoing China＇s smart grids.But the poor environment on the low voltage power line has a bad effect on the performances of LV-PLC,measuring and understanding of the power line channel characteristics become vital.In view of the existing situation of the narrow-band LV-PLC widely being used in the remote power-meter reading system,the paper provides field measurement methods of the impedance and attenuation characteristics,and implements a field measurement on the selection of some typical distribution networks,then compares and summarizes impedance and attenuation characteristics measured in the frequency range of 80～500 kHz.A practical reference is provided for the study of real environments of the LV-PLC in this paper.

关 键 词：低压电力线载波通信 测量 阻抗特性 衰减特性 

分 类 号：TM733[电气工程—电力系统及自动化]