Research on the Relationship between Communication Frequency Impedance Variation and Impulse Noise Characteristics in the Low-voltage Power Line Carrier
Author(s): LI Bo, CAO Min, WANG Yao, HU Wanceng, XIE Tao, LI Chuan, LIU Ailian, XIAO Yuanqiang, Yunnan Electric Power Research Institute, Faculty of Information Engineering and Automation, Kunming University of Science and Technology
Pages: 47-50
Year: 2015 Issue: 1
Journal: Yunnan Electric Power
Keyword: low-voltage power line; communication frequency; impedance variation range; impulse noise; relationship of impedance and noise;
Abstract: Choosing different environments on campus,the impedance of the low-voltage power line and channel noise in the range of 80 ~ 500 k Hz was measured by ratio method principle. Process and calculate the data obtained by collection,and then analyze the relationship between impulse noise characteristics and communication frequency impedance variation on low-voltage power line in different times. The analysis of results show that: in the range of 80 ~ 500 k Hz,the input- impedance variation and the number and power of impulse noise has the relationship of increasing or decreasing synchronously; Impedance has a strong time- varying;The impedance variation can be seriously influenced by the structure of the power grid,load type and quantity.
Pages: 47-50
Year: 2015 Issue: 1
Journal: Yunnan Electric Power
Keyword: low-voltage power line; communication frequency; impedance variation range; impulse noise; relationship of impedance and noise;
Abstract: Choosing different environments on campus,the impedance of the low-voltage power line and channel noise in the range of 80 ~ 500 k Hz was measured by ratio method principle. Process and calculate the data obtained by collection,and then analyze the relationship between impulse noise characteristics and communication frequency impedance variation on low-voltage power line in different times. The analysis of results show that: in the range of 80 ~ 500 k Hz,the input- impedance variation and the number and power of impulse noise has the relationship of increasing or decreasing synchronously; Impedance has a strong time- varying;The impedance variation can be seriously influenced by the structure of the power grid,load type and quantity.
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