CAJ | 학술논문

利用比值法原理，选取不同环境，在80 kHz~500 kHz频段内，对低压电力线的阻抗和信道噪声进行了测量，并对所测数据进行处理计算。分析电力线网络中不同时间段通信频点的阻抗变化范围与信道中脉冲噪声特性的关系。分析结果表明：在80~500 kHz频段内，输入阻抗变化范围与信道脉冲噪声数量和功率有同增同减的关系；阻抗具有很强的时变性；电网结构及负载类型、数量对阻抗变化范围影响较大。
이용비치법원리，선취불동배경，재80 kHz~500 kHz빈단내，대저압전력선적조항화신도조성진행료측량，병대소측수거진행처리계산。분석전력선망락중불동시간단통신빈점적조항변화범위여신도중맥충조성특성적관계。분석결과표명：재80~500 kHz빈단내，수입조항변화범위여신도맥충조성수량화공솔유동증동감적관계；조항구유흔강적시변성；전망결구급부재류형、수량대조항변화범위영향교대。
Choosing different environments on campus, the impedance of the low-voltage power line and channel noise in the range of 80~500 kHz 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 kHz, 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.